CN209743632U - Erosion-resistant spool valve - Google Patents
Erosion-resistant spool valve Download PDFInfo
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- CN209743632U CN209743632U CN201920314043.5U CN201920314043U CN209743632U CN 209743632 U CN209743632 U CN 209743632U CN 201920314043 U CN201920314043 U CN 201920314043U CN 209743632 U CN209743632 U CN 209743632U
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Abstract
The utility model discloses an erosion-proof spool valve, the spool pipe is a fixing piece and coaxially penetrates through a sleeve pipe I of a valve body, an inner cavity of the valve body and a sleeve pipe II of the valve body; the middle part of the valve core pipe is provided with an axial interlayer, and two axially adjacent sides of the interlayer are respectively provided with radial circulation holes of an input section and an output section; the outer diameter of the input section is larger than that of the output section, and the input section and the sleeve I and the output section and the sleeve II are in axial hole type fit with at least one joint part to be provided with sealing; the annular inner wall of at least one sleeve of the sleeve I and the sleeve II wraps one end of an anti-erosion sleeve, the anti-erosion sleeve extends into the inner cavity of the valve body, when the valve is opened, a radial pore passage of the anti-erosion sleeve corresponds to and is communicated with the through holes of at least one section of the input section and the output section, and when the valve is closed, the annular inner wall of the anti-erosion sleeve seals the through holes of at least one section of the input section and the output section; under the action of potential energy in two directions, the valve body makes axial reciprocating motion relative to the valve core pipe. The anti-erosion, zero leakage, safe and reliable, reduce and exempt from the maintenance.
Description
Technical Field
The utility model discloses an erosion-proof core tube valve belongs to the valve field, is a branch series in the original invention core tube valve (patent application number 201810267863.3) mother series of the inventor; relates to a pressure open-close valve, a safety valve, a check valve, a pinhole pressure reducing valve, an open-close valve and a discharge valve.
The anti-erosion sleeve has the advantages of safety, reliability, zero leakage, no maintenance and long service life; compared with the valve body structure of the prior binary structure core tube valve (201810271335.5), the structure is simpler, the flow resistance is smaller, the manufacture is more convenient, the cost is saved, and the valve is more reasonable.
Background
At present, the sealing pairs of various valves are easily eroded by high-pressure media and particle media, so that the sealing performance, the safety, the working efficiency and the service life are influenced.
Disclosure of Invention
An object of the utility model is to provide an scour protection loses the core pipe valve, avoids the medium to sealed vice erosion and abrasion, satisfies the production of harsh operating mode, energy-conserving and safe needs.
The main technical characteristics of the anti-erosion core pipe valve are as follows: the valve core pipe is a fixing part which coaxially penetrates through a sleeve pipe I of the valve body, an inner cavity of the valve body and a sleeve pipe II of the valve body; the middle part of the valve core pipe is provided with an axial interlayer, and the interlayer consists of an inner core and a middle pipe section of the valve core pipe with the inner core radiating in the radial direction; the axially adjacent two sides of the interlayer are respectively provided with at least one radial flow hole of the input section and at least one radial flow hole of the output section; the annular valve core surrounding the interlayer and the annular valve seat at the throat part of the sleeve II form a sealing pair; the outer diameter of the input section is larger than that of the output section, and the input section and the sleeve I and the output section and the sleeve II are in axial hole type fit with at least one joint part to be provided with sealing; the annular inner wall of at least one sleeve of the sleeve I and the sleeve II wraps one end of an anti-erosion sleeve, the anti-erosion sleeve extends into the inner cavity of the valve body, when the valve is opened, a radial pore passage of the anti-erosion sleeve corresponds to and is communicated with the through holes of at least one section of the input section and the output section, and when the valve is closed, the annular inner wall of the anti-erosion sleeve seals the through holes of at least one section of the input section and the output section; under the action of potential energy in two directions, the valve body makes axial reciprocating motion relative to the valve core pipe.
The annular inner wall of the sleeve I wraps one end of the erosion-proof sleeve and forms a part of the sleeve I, the other end of the erosion-proof sleeve extends into the inner cavity of the valve body, and when the valve is opened, a radial pore passage of the erosion-proof sleeve corresponds to the circulation hole of the input section and is communicated with the inner cavity.
The annular inner wall of the sleeve II wraps one end of the erosion-proof sleeve and forms a part of the sleeve II, the other end of the erosion-proof sleeve extends into the inner cavity of the valve body, and when the valve is opened, a radial pore passage of the erosion-proof sleeve corresponds to the circulation hole of the output section and is communicated with the inner cavity.
the annular inner walls of the sleeve I and the sleeve II are wrapped by one end of an anti-erosion sleeve respectively and form a part of the sleeve I and a part of the sleeve II respectively, the middle part of the anti-erosion sleeve is positioned in the inner cavity of the valve body, and when the valve is opened, radial pore channels of the anti-erosion sleeve correspond to the circulation holes of the input section and the output section respectively and are communicated with the inner cavity.
And a push rod motor is axially arranged between the end part of the input section and the end part of the sleeve I.
The joint parts of the input section and the sleeve I and the joint parts of the output section and the sleeve II are both provided with bellows sealing parts, at least one section of the annular wall of the input section and the output section is provided with a radial check device, and the bellows sealing parts can discharge the pressure in the inner cavity of the bellows sealing part into the inner cavity of the input section and the inner cavity of the output section respectively.
The valve body is integrated into a whole, the inner cavity is a flow passage, the erosion-resistant sleeve is a protection device of the sealing pair, and the annular valve seat is an opening and closing piece moving axially.
The radial width of the erosion protection sleeve pore passage can be larger than the radial width of the corresponding flow hole.
To sum up, the utility model discloses an anti-erosion core pipe valve's positive effect lies in:
1. The reliability is strong;
2. The safety is strong;
3. Zero leakage;
4. Maintenance is free;
5. The service life is long;
6. Self-powered and remote controlled.
Drawings
Fig. 1 and 2 are two schematic state diagrams of a longitudinal full-section structure of a first embodiment of the present invention.
Fig. 3 and 4 are two schematic state diagrams of a longitudinal full-section structure of a second embodiment of the present invention.
Fig. 5 and 6 are two schematic state diagrams of a longitudinal full-section structure of a third embodiment of the present invention.
Fig. 7 and 8 are two schematic state diagrams of a longitudinal full-section structure of a fourth embodiment of the present invention.
Fig. 9 and 10 are two schematic state diagrams of a fifth embodiment of the present invention.
Fig. 11 and 12 are two schematic state diagrams of a longitudinal full-section structure of a sixth embodiment of the present invention.
Fig. 13 and 14 are two schematic state diagrams of a seventh embodiment of the present invention in a longitudinal full-section structure.
Fig. 15 and 16 are two schematic state diagrams of the vertical full-section structure of the eighth embodiment of the present invention.
In the figure, 1-valve core pipe, 1 '-input section, 1' -output section, 100-interlayer, 100 '-tongue-shaped triangular slope surface, 101-annular valve core, 103-flow hole, 105' -communication hole, 2-valve body, 2 '-sleeve I, 2' -sleeve II, 200-inner cavity, 200 '-pore passage, 201-annular valve seat, 201' -erosion-proof sleeve, 300-bellows sealing element, 302-sealing ring, 306-bellows pressure chamber, 4-compression spring, 4 '-extension spring, 5-rope, 507-push rod motor, 508-electromagnet, 509' -iron block, 609-backstop device, 702-limiter and 708-counterweight.
Detailed description of the preferred embodiments
Example overview:
the valve core pipe 1 is a fixing part and coaxially penetrates through a sleeve pipe I2 'of the valve body 2, an inner cavity 200 of the valve body 2 and a sleeve pipe II 2' of the valve body 2; the middle part of the valve core pipe 1 is provided with an axial interlayer 100, and the interlayer 100 consists of an inner core and a middle pipe section of the valve core pipe 1 with the inner core radiating radially; axially adjacent two sides of the partition 100 are at least one radial flow hole 103 of the input section 1' and the output section 1 ″; the outer diameter of the input section 1 'is larger than that of the output section 1', and the input section 1 'and the sleeve I2' and the output section 1 'and the sleeve II 2' are matched with at least one joint part for shaft hole type to be provided with sealing; the annular inner wall of at least one sleeve of the sleeve I2 ' and the sleeve II 2 ' wraps one end of an anti-erosion sleeve 201 ', the anti-erosion sleeve 201 ' extends into an inner cavity 200 of the valve body 2, when the valve is opened, a radial pore passage 200 ' of the anti-erosion sleeve 201 ' corresponds to at least one section of the circulation hole 103 of the input section 1 ' and the output section 1 ' and penetrates through the inner cavity 200, and when the valve is closed, the annular inner wall of the anti-erosion sleeve 201 ' seals the at least one section of the circulation hole 103 of the input section 1 ' and the output section 1 '; in the opening process of the valve, the annular inner wall of the erosion-proof sleeve 201' covers the annular valve core 101 all the time, so that the erosion of a medium is avoided; in the closing process, the annular valve core 101 cannot be eroded by the medium; when the sealing device moves over the aperture length of the flow hole 103 of the input section 1 ', the annular inner wall of the erosion-proof sleeve 201 ' seals the flow hole 103 of at least one section of the input section 1 ' and the output section 1 ″, so that the service life of the sealing pair is ensured; after the valve is closed, the two axial ends of the sealing pair are in a closed state, and the pressure at the two ends of the sealing pair is close to or equal to zero, so that the sealing effect of the sealing pair is ensured.
The annular inner wall of the sleeve I2 ' wraps one end of the erosion-proof sleeve 201 ' and forms a part of the sleeve I2 ', the other end of the erosion-proof sleeve 201 ' extends into the inner cavity 200 of the valve body 2, and when the valve is opened, a radial pore passage 200 ' of the erosion-proof sleeve 201 ' corresponds to the flow hole 103 of the input section 1 ' and is communicated with the inner cavity; the annular valve core 101 surrounding the interlayer 100 is a sealing pair formed by a one-way slope surface and an annular valve seat 201 at the throat part of a sleeve II 2'.
The annular inner wall of the sleeve II 2 ' wraps one end of the erosion-proof sleeve 201 ' and forms a part of the sleeve II 2 ', the other end of the erosion-proof sleeve 201 ' extends into the inner cavity 200 of the valve body 2, and when the valve is opened, the radial pore channel 200 ' of the erosion-proof sleeve 201 ' corresponds to the flow hole 103 of the output section 1 ' and is communicated with the inner cavity; the sealing surface of the annular valve core 101 surrounding the interlayer 100 is a one-way slope surface and forms a sealing pair with an annular valve seat 201 embedded into the inner ring of the erosion-proof sleeve 201', namely the throat part of the sleeve II 2 ″.
The annular inner walls of the sleeve I2 'and the sleeve II 2' are respectively wrapped on one end of an erosion-proof sleeve 201 'and respectively form a part of the sleeve I2' and the sleeve II 2 ', the middle part of the erosion-proof sleeve 201' is positioned in an inner cavity 200 of the valve body 2, and when the valve is opened, a radial pore passage 200 'of the erosion-proof sleeve 201' respectively corresponds to the circulation holes 103 of the input section 1 'and the output section 1' and is communicated with the inner cavity; the sealing surface of the annular valve core 101 surrounding the interlayer 100 is a one-way slope surface and forms a sealing pair with an annular valve seat 201 embedded into the inner ring of the erosion-proof sleeve 201', namely the throat part of the sleeve II 2 ″.
Example one
Referring to fig. 1 and 2, the erosion-resistant spool valve of the present embodiment is used for opening and closing a conventional medium; the valve core pipe 1 is a fixing part and coaxially penetrates through a sleeve pipe I2 'of the valve body 2, an inner cavity 200 of the valve body 2 and a sleeve pipe II 2' of the valve body 2; the middle part of the valve core pipe 1 is provided with an axial interlayer 100, the interlayer 100 is composed of an inner core and a middle pipe section of the valve core pipe 1 with the inner core radiating radially, and two axial end surfaces of the inner core of the interlayer 100 are tongue-shaped triangular slopes 100'; two radial circulation holes 103 are symmetrically arranged on two axially adjacent sides of the interlayer 100, namely an input section 1 'and an output section 1'; sealing rings 302 are arranged at the joint parts of the input section 1 'and the sleeve I2' and the joint parts of the output section 1 'and the sleeve II 2'; the annular inner wall of the sleeve II 2 ' wraps one end of the erosion-proof sleeve 201 ' and forms a part of the sleeve II 2 ', the other end of the erosion-proof sleeve 201 ' extends into the inner cavity 200 of the valve body 2, and when the valve is opened, two radial pore canals 200 ' of the erosion-proof sleeve 201 ' correspond to the flow holes 103 of the output section 1 ' and are communicated with the inner cavity 200; the sealing surface of the annular valve core 101 surrounding the interlayer 100 is a one-way slope surface and forms a sealing pair with an annular valve seat 201 embedded into the inner ring of the erosion-proof sleeve 201', namely the throat part of the sleeve II 2 ″.
FIG. 1 shows an open state, at this time, the valve body 2 is pushed to move towards the direction of the output section 1 ', the annular valve seat 201 at the throat of the sleeve II 2 ' leaves the annular valve core 101, and the pore channel 200 ' of the erosion preventing sleeve 201 ' is relatively communicated with the circulation hole 103 of the output section 1 '; the medium flows through the flow hole 103 of the input section 1 ', the inner cavity 200, the pore passage 200 ' and the flow hole 103 of the output section 1 ' and enters the back pressure of the valve, and the medium flows.
FIG. 2 shows a closed state, at this time, the valve body 2 is pushed to move towards the input section 1 ', the annular valve seat 201 at the throat of the sleeve II 2' is closely attached to the annular valve core 101, and medium flow is cut off; during closing, the annular inner wall of the erosion protection sleeve 201 ' covers the flow openings 103 of the inlet section 1 ' and the outlet section 1 ″ when moved over the aperture length of the flow openings 103 of the inlet section 1 '.
Example two
Referring to fig. 3 and 4, the anti-erosion spool valve of the present embodiment is used for drainage; the valve core pipe 1 is a sleeve pipe I2 'with a fixing piece perpendicular to the ground and coaxially penetrating through the valve body 2 from top to bottom, an inner cavity 200 of the valve body 2 and a sleeve pipe II 2' of the valve body 2; two axial end faces of the inner core of the interlayer 100 are tongue-shaped triangular slopes 100'; the input section 1 'and the output section 1' are both provided with two radial through holes 103; a corrugated pipe sealing member 300 is arranged at the joint of the input section 1 'and the sleeve I2'; the annular inner wall of the sleeve I2 'is wrapped at one end of an erosion-proof sleeve 201', and the erosion-proof sleeve 201 'is provided with two radial pore canals 200'; two ropes 5 connect the end of the input section 1 'and the end of the sleeve I2'.
Fig. 3 shows that in an open state, at the moment, the rope 5 is loosened, the valve body 2 moves downwards axially, the annular valve seat 201 at the throat part of the sleeve II 2 ″ leaves the annular valve core 101, the pore passage 200 "of the erosion preventing sleeve 201 'is relatively communicated with the circulation hole 103 of the input section 1', and the medium circulates.
fig. 4 shows the closed state, at this time, the rope 5 is tightened, the valve body 2 moves upwards axially, the annular valve seat 201 at the throat part of the sleeve II 2' is tightly attached to the annular valve core 101, and the medium flow is cut off.
EXAMPLE III
Referring to fig. 5 and 6, the anti-erosion spool valve of the present embodiment is used for safe inline drainage; the valve core pipe 1 is a sleeve pipe I2 'with a fixing part vertical to the ground and coaxially penetrating through the valve body 2 from bottom to top, an inner cavity 200 of the valve body 2 and a sleeve pipe II 2' of the valve body 2; two axial end faces of the inner core of the interlayer 100 are tongue-shaped triangular slopes 100'; the input section 1 'and the output section 1' are both provided with two radial through holes 103; the joint of the input section 1 ' and the sleeve I2 ' is provided with a corrugated pipe pressure cabin 306, and the annular wall of the input section 1 ' is provided with a radial communicating hole 105 ' which runs through the inner cavity of the input section 1 ' and the inner cavity of the corrugated pipe pressure cabin 306; the annular inner wall of the sleeve I2 'is wrapped at one end of an erosion-proof sleeve 201', and the erosion-proof sleeve 201 'is provided with two radial pore canals 200'; the end face of the sleeve II 2' is provided with 5 counter weights 708 which are sequentially overlapped and combined from bottom to top.
Fig. 5 shows that in an open state, at this time, the pressure of the medium in the pipe network is ultrahigh, the thrust force formed by the pressure of the medium filled in the inner cavity of the bellows pressure chamber 306 is greater than the self-gravity of the counterweight 708, the valve body 2 is pushed to move upwards axially, the annular valve seat 201 at the throat of the sleeve pipe ii 2 ″ is separated from the annular valve core 101, the hole channel 200 ″ of the erosion prevention sleeve 201 'is relatively communicated with the flow hole 103 of the input section 1', and the overpressure medium is released.
fig. 6 shows a closed state, at this time, the pressure of the medium in the pipe network is normal, the thrust force formed by the pressure of the medium in the inner cavity of the bellows pressure chamber 306 is smaller than the self-gravity of the counterweight 708, the valve body 2 moves axially downward, the annular valve seat 201 at the throat of the sleeve ii 2 ″ is tightly attached to the annular valve core 101, and the medium flow is cut off.
example four
referring to fig. 7 and 8, the erosion-preventing spool valve of the present embodiment is used for opening and closing; two axial end faces of the inner core of the interlayer 100 are conical faces; the input section 1 'and the output section 1' are both provided with four radial flow holes 103, and the flow holes 103 have forward flow inclination angles; the joint parts of the input section 1 'and the sleeve I2' and the joint parts of the output section 1 'and the sleeve II 2' are both provided with a bellows sealing piece 300; the annular inner wall of the sleeve I2 'is wrapped at one end of an erosion-preventing sleeve 201', and the erosion-preventing sleeve 201 'is provided with four radial pore canals 200'; ropes 5 are arranged between the end part of the input section 1 'and the end part of the sleeve I2' and between the end part of the sleeve II 2 'and the end part of the output section 1'.
Fig. 7 shows an open state, at this time, the rope 5 is loosened and the valve body 2 is pushed to move towards the direction of the output section 1 ", the rope 5 is locked, the annular valve seat 201 at the throat part of the sleeve II 2" leaves the annular valve core 101, the hole channel 200 "of the erosion preventing sleeve 201 'is relatively communicated with the circulation hole 103 of the input section 1', and the medium circulates.
FIG. 8 shows that the valve is in a closed state, at the moment, the rope 5 between the end part of the sleeve II 2 'and the end part of the output section 1' is loosened, the valve body 2 is pushed to move towards the input section 1 ', the rope 5 between the end part of the input section 1' and the end part of the sleeve I2 'is tightened and locked, the annular valve seat 201 at the throat part of the sleeve II 2' is tightly attached to the annular valve core 101, and medium flow is cut off.
EXAMPLE five
Referring to fig. 9 and 10, the erosion-resistant core tube valve of the present embodiment is used for safety, check and pressure opening and closing; two axial end faces of the inner core of the interlayer 100 are conical faces; the input section 1 'and the output section 1' are both provided with four radial flow holes 103, and the flow holes 103 have forward flow inclination angles; the joint of the input section 1 ' and the sleeve I2 ' is provided with a corrugated pipe pressure chamber 306 and a sealing ring 302, and the annular wall of the input section 1 ' is provided with a radial communicating hole 105 ' and penetrates through the inner cavity of the input section 1 ' and the inner cavity of the corrugated pipe pressure chamber 306; the joint of the output section 1 ' and the sleeve II 2 ' is provided with a bellows seal 300 and a seal ring 302, the ring wall of the output section 1 ' is also provided with a radial communicating hole 105 ' and penetrates through the inner cavity of the output section 1 ' and the inner cavity of the bellows seal 300; the annular inner walls of the sleeve I2 ' and the sleeve II 2 ' are respectively wrapped at one end of an anti-erosion sleeve 201 ', and the anti-erosion sleeve 201 ' is provided with four opposite eight radial pore canals 200 '; a limiting rope 5 is arranged between the end part of the input section 1 'and the end part of the sleeve I2', and a compression spring 4 is arranged between the end part of the sleeve II 2 'and the end part of the output section 1'.
Fig. 9 shows that in an open state, at this time, the thrust force formed by the pressure of the medium filled in the inner cavity of the bellows pressure chamber 306 is greater than the elastic force of the compression spring 4, the valve body 2 is pushed to move towards the direction of the output section 1 ″, the annular valve seat 201 at the throat part of the sleeve ii 2 ″ leaves the annular valve core 101, the pore passage 200 ″ of the erosion prevention sleeve 201 'is relatively communicated with the flow holes 103 of the input section 1' and the output section 1 ″, and the medium flows.
Fig. 10 shows a closed state, at this time, the thrust force formed by the medium pressure in the inner cavity of the bellows pressure chamber 306 is smaller than the elastic force of the compression spring 4, the valve body 2 moves towards the input section 1', the annular valve seat 201 at the throat part of the sleeve ii 2 ″ is tightly attached to the annular valve core 101, and the medium flow is cut off.
EXAMPLE six
Referring to fig. 11 and 12, the anti-erosion spool valve of the present embodiment is used for reducing the pressure of the pinhole; the two axial end faces of the inner core of the interlayer 100 are planes; two axially adjacent sides of the interlayer 100 are respectively a radial flow hole 103 with an input section 1 'and an output section 1' staggered up and down; the joint of the input section 1 ' and the sleeve I2 ' is provided with a corrugated pipe pressure cabin 306, and the annular wall of the input section 1 ' is provided with a radial communicating hole 105 ' which runs through the inner cavity of the input section 1 ' and the inner cavity of the corrugated pipe pressure cabin 306; the joint of the output section 1 'and the sleeve II 2' is provided with a bellows sealing piece 300; the annular inner wall of the sleeve I2 'is wrapped at one end of an erosion-proof sleeve 201', and the erosion-proof sleeve 201 'is provided with a radial duct 200'; an extension spring 4 ' is arranged between the end part of the input section 1 ' and the end part of the sleeve I2 ', and a limiting stopper 702 is arranged between the end part of the sleeve II 2 ' and the end part of the output section 1 '.
Fig. 11 shows that in an open state, at this time, the pushing force formed by the pressure of the medium filled in the inner cavity of the bellows pressure chamber 306 is greater than the pulling force of the extension spring 4 ', the valve body 2 is pushed to move towards the direction of the output section 1 ″, the annular valve seat 201 at the throat of the sleeve ii 2 ″ leaves the annular valve core 101, the duct 200 ″ of the erosion prevention sleeve 201 ' is relatively communicated with the flow hole 103 of the input section 1 ', and the medium is decompressed and circulated.
Fig. 12 shows a closed state, at this time, the pushing force formed by the medium pressure in the inner cavity of the bellows pressure chamber 306 is smaller than the pulling force of the extension spring 4 ', the valve body 2 moves towards the input section 1', the annular valve seat 201 at the throat of the sleeve ii 2 ″ is tightly attached to the annular valve core 101, and the medium flow is cut off.
EXAMPLE seven
Referring to fig. 13 and 14, the erosion prevention spool valve of the present embodiment is used for opening and closing; the two axial end faces of the inner core of the interlayer 100 are planes; the input section 1' and the output section 1 ″ each have ten radial flow openings 103; the joint parts of the input section 1 'and the sleeve I2' and the joint parts of the output section 1 'and the sleeve II 2' are both provided with a bellows sealing piece 300; the annular inner wall of the sleeve I2 'is wrapped at one end of an erosion-preventing sleeve 201', and the erosion-preventing sleeve 201 'is provided with ten radial pore canals 200'; an extension spring 4 ' is arranged between the end part of the input section 1 ' and the end part of the sleeve I2 '; an iron block 509 ' is arranged at the end part of the sleeve II 2 ', and an electromagnet 508 is arranged at the end part of the output section 1 '.
Fig. 13 shows that in an open state, at this time, the electromagnet 508 is started to attract the iron block 509 ″ to drive the valve body 2 to move towards the direction of the output section 1 ″, the annular valve seat 201 at the throat part of the sleeve ii 2 ″ leaves the annular valve core 101, the hole channel 200 ″ of the erosion prevention sleeve 201 'is relatively communicated with the circulation hole 103 of the input section 1', and the medium circulates.
Fig. 14 shows that, in the closed state, the electromagnet 508 is powered off, the pulling force of the extension spring 4 'drives the valve body 2 to move towards the input section 1', the annular valve seat 201 at the throat of the sleeve ii 2 ″ is tightly attached to the annular valve core 101, and the medium flow is cut off.
Example eight
Referring to fig. 15 and 16, the erosion prevention spool valve of the present embodiment is used for opening and closing; two axial end faces of the inner core of the interlayer 100 are conical faces; the input section 1 'and the output section 1' are both provided with four radial flow holes 103, and the flow holes 103 have forward flow inclination angles; the joint of the input section 1 'and the sleeve I2' is provided with a bellows seal 300, and the annular wall of the input section 1 'is provided with a radial non-return device 609 which can discharge the pressure in the inner cavity of the bellows seal 300 into the inner cavity of the input section 1'; the joint of the output section 1 'and the sleeve II 2' is provided with a bellows seal 300, the annular wall of the output section 1 'is also provided with a radial non-return device 609 which can discharge the pressure in the inner cavity of the bellows seal 300 into the inner cavity of the output section 1'; the annular inner walls of the sleeve I2 ' and the sleeve II 2 ' are respectively wrapped at one end of an anti-erosion sleeve 201 ', and the anti-erosion sleeve 201 ' is provided with four opposite eight radial pore canals 200 '; a push rod motor 507 is arranged between the end part of the input section 1 'and the end part of the sleeve I2', and a compression spring 4 is arranged between the end part of the sleeve II 2 'and the end part of the output section 1'.
Fig. 15 shows that in an open state, at this time, the push rod motor 507 exerts force to push the valve body 2 to move towards the direction of the output section 1 ″, the annular valve seat 201 at the throat of the sleeve ii 2 ″ leaves the annular valve core 101, and the pore passage 200 ″ of the erosion preventing sleeve 201 'is respectively communicated with the flow holes 103 of the input section 1' and the output section 1 ″, so that the medium flows.
Fig. 16 shows that, in the closed state, the push rod motor 507 is contracted, the valve body 2 is pushed by the elastic force of the compression spring 4 to move towards the input section 1', the annular valve seat 201 at the throat of the sleeve II 2 ″ is tightly attached to the annular valve core 101, and the medium flow is cut off.
Claims (6)
1. The anti-erosion valve core pipe comprises an anti-erosion valve core pipe, wherein a valve core pipe (1) is a fixing piece and coaxially penetrates through a sleeve pipe I (2 ') of a valve body (2), an inner cavity (200) of the valve body (2) and a sleeve pipe II (2') of the valve body (2); the middle part of the valve core pipe (1) is provided with an axial interlayer (100), and the interlayer (100) consists of an inner core and a middle pipe section of the valve core pipe (1) with the inner core radiating in the radial direction; the axially adjacent two sides of the interlayer (100) are respectively provided with at least one radial flow hole (103) of the input section (1 ') and the output section (1'); an annular valve core (101) surrounding the interlayer (100) and an annular valve seat (201) at the throat part of a sleeve II (2') form a sealing pair; the input section (1 ') and the sleeve I (2') and the output section (1 ') and the sleeve II (2') are provided with seals for the shaft hole type matching at least one joint part; the outer diameter of the input section (1 ') is larger than that of the output section (1'); under the action of potential energy in two directions, the valve body (2) makes axial reciprocating movement relative to the valve core pipe (1); the anti-erosion valve is characterized in that the annular inner wall of at least one sleeve of the sleeve I (2 ') and the sleeve II (2 ') wraps one end of an anti-erosion sleeve (201 '), the anti-erosion sleeve (201 ') extends into an inner cavity (200) of the valve body (2), when the valve is opened, a radial pore passage (200 ') of the anti-erosion sleeve (201 ') corresponds to at least one section of flow hole (103) of the input section (1 ') and the output section (1 ') and penetrates through the inner cavity (200), and when the valve is closed, the annular inner wall of the anti-erosion sleeve (201 ') seals the at least one section of flow hole (103) of the input section (1 ') and the output section (1 ').
2. An erosion control spool valve according to claim 1, characterized in that the annular inner wall of the sleeve i (2 ') surrounds one end of the erosion prevention sleeve (201') and forms a part of the sleeve i (2 '), the other end of the erosion prevention sleeve (201') extends into the inner cavity (200) of the valve body (2), and when the valve is opened, the radial orifice (200 ") of the erosion prevention sleeve (201 ') corresponds to the flow opening (103) of the inlet section (1') and penetrates the inner cavity (200).
3. The erosion prevention spool valve according to claim 1, characterized in that the annular inner wall of the sleeve II (2 ") wraps one end of the erosion prevention sleeve (201 ') and forms a part of the sleeve II (2"), the other end of the erosion prevention sleeve (201 ') extends into the inner cavity (200) of the valve body (2), and when the valve is opened, the radial pore canal (200 ") of the erosion prevention sleeve (201 ') corresponds to the flow hole (103) of the output section (1") and penetrates through the inner cavity (200); an annular valve core (101) surrounding the interlayer (100) and an annular valve seat (201) embedded into the inner ring of the erosion-proof sleeve (201 '), namely the throat part of the sleeve II (2'), form a sealing pair.
4. The erosion-resistant spool valve according to claim 1, characterized in that the annular inner walls of the sleeve I (2 ') and the sleeve II (2 ") each wrap one end of an erosion-resistant sleeve (201') and respectively form a part of the sleeve I (2 ') and the sleeve II (2"), the middle part of the erosion-resistant sleeve (201') is positioned in the inner cavity (200) of the valve body (2), and when the valve is opened, the radial pore canal (200 ") of the erosion-resistant sleeve (201 ') corresponds to the flow hole (103) of the input section (1') and the output section (1") respectively and penetrates through the inner cavity (200); an annular valve core (101) surrounding the interlayer (100) and an annular valve seat (201) embedded into the inner ring of the erosion-proof sleeve (201 '), namely the throat part of the sleeve II (2'), form a sealing pair.
5. Erosion control spool valve according to claim 1, characterized in that a push rod motor (507) is axially arranged between the end of the input section (1 ') and the end of the sleeve i (2').
6. An erosion control spool valve according to claim 2, characterized in that the joints of said inlet section (1 ') with the sleeve i (2 ') and outlet section (1 ") with the sleeve ii (2") are provided with bellows seals (300), and the annular wall of at least one of the inlet section (1 ') and outlet section (1 ") is provided with radial non-return means (609).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920314043.5U CN209743632U (en) | 2019-03-12 | 2019-03-12 | Erosion-resistant spool valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920314043.5U CN209743632U (en) | 2019-03-12 | 2019-03-12 | Erosion-resistant spool valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209743632U true CN209743632U (en) | 2019-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920314043.5U Expired - Fee Related CN209743632U (en) | 2019-03-12 | 2019-03-12 | Erosion-resistant spool valve |
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| Country | Link |
|---|---|
| CN (1) | CN209743632U (en) |
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2019
- 2019-03-12 CN CN201920314043.5U patent/CN209743632U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191206 Termination date: 20210312 |