CN214699258U - Angle type plane sealing stop valve with pressure relief function - Google Patents
Angle type plane sealing stop valve with pressure relief function Download PDFInfo
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- CN214699258U CN214699258U CN202120277941.5U CN202120277941U CN214699258U CN 214699258 U CN214699258 U CN 214699258U CN 202120277941 U CN202120277941 U CN 202120277941U CN 214699258 U CN214699258 U CN 214699258U
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Abstract
The utility model relates to a stop valve technical field is an angle formula plane seal stop valve of area pressure release function, including valve body, valve gap, valve rod, main valve lamella, packing gland, pretension spring, pretension screw rod and vice valve clack, be equipped with first sealed face on the main valve lamella, be equipped with the sealed face of second on the valve pocket inner wall of position around the inner opening of corresponding medium access passageway, first sealed face and the sealed face of second are the horizontal plane, be equipped with the pressure release chamber with pretension screw rod installation passageway lower extreme intercommunication in the main valve lamella, be equipped with the pressure release mouth of intercommunication pressure release chamber and valve pocket on the main valve lamella wall. The utility model has the advantages of reasonable and compact structure, convenient to use, it is through pretension spring, pretension screw rod, vice valve clack, the setting in pressure release chamber, guarantees this device when closing, and after medium pressure rose to certain extent in the front end pipeline, the medium can push away vice valve clack and carry out the pressure release, and then can effectively avoid front end pipeline, device to take place the superpressure and damage, has high-efficient, safe characteristics.
Description
Technical Field
The utility model relates to a stop valve technical field is an angle formula plane seal stop valve of area pressure release function.
Background
The stop valve is mainly applied to the fields of industry, agriculture, heating and heat supply, oil extraction and chemical industry, is matched with a manual, pneumatic or electric actuating mechanism, has the function of switching on and off a pipeline, and can ensure that the front end of the regulating valve is not overpressured. However, since the existing stop valves generally do not have a pressure relief function, when the stop valve is closed, the pressure of the medium at the inlet rises, and overpressure or even damage to the pipeline or the device in front of the stop valve is easy to occur.
Disclosure of Invention
The utility model provides a take angle formula plane seal stop valve of pressure release function has overcome above-mentioned prior art not enough, and it can effectively solve current stop valve and exist because of unable pressure release and cause the problem that front end pipeline over-voltage damaged easily after the stop valve is closed.
The technical scheme of the utility model is realized through following measure: an angle type plane sealing stop valve with a pressure relief function comprises a valve body, a valve cover, a valve rod, a main valve flap, a packing gland, a pre-tightening spring, a pre-tightening screw and an auxiliary valve flap, wherein the valve cover is fixedly installed at the upper end of the valve body, a valve cavity is defined between the valve body and the valve cover, a medium inlet channel and a medium outlet channel which are respectively communicated with the valve cavity are arranged on the valve body, the medium inlet channel is vertical, the outer end opening of the medium inlet channel is downward, the medium outlet channel is horizontal, the outer end opening of the medium outlet channel faces to the left, a valve rod hole which is communicated up and down is arranged on the valve cover, the lower end of the valve rod vertically penetrates through the valve rod hole and extends into the valve cavity, an upper inner ring groove is arranged at the upper end of the inner wall of the valve rod hole, the packing is arranged in a gap between the inner wall of the valve rod and the upper inner ring groove, the packing gland used for compressing the packing is arranged above, and an external thread is arranged on the outer side of the upper part of the valve rod, a fixing frame in threaded connection with the upper part of the valve rod is fixedly arranged above the valve cover, a main valve flap is arranged at the lower end of the valve rod, a first sealing surface is arranged on the main valve flap, a second sealing surface is arranged on the inner wall of the valve cavity corresponding to the position around an inner end opening of the medium inlet channel, the first sealing surface and the second sealing surface are in sealing contact to close the medium inlet channel, the first sealing surface and the second sealing surface are both horizontal planes, a pre-tightening screw rod installation channel which is communicated up and down is arranged in the valve rod, the pre-tightening screw rod is in threaded connection in the pre-tightening screw rod installation channel, the upper end of the pre-tightening screw rod penetrates out of the valve rod, a pressure relief cavity communicated with the lower end of the pre-tightening screw rod installation channel is arranged in the main valve flap corresponding to the position of the medium inlet channel, a vertical pressure relief channel communicated with the pressure relief cavity and the medium inlet channel is arranged on the main valve flap corresponding to the position of the medium inlet channel, the lower end of the pre-tightening screw rod extends into the pressure relief cavity, and is connected with an auxiliary valve flap through a pre-tightening spring, the auxiliary valve flap is provided with a third sealing surface, a fourth sealing surface is arranged on the inner wall of the pressure relief cavity corresponding to the position around the outlet of the pressure relief channel, the third sealing surface and the fourth sealing surface are in sealing contact to close the pressure relief channel, and the wall of the main valve flap is provided with a pressure relief opening communicating the pressure relief cavity and the valve cavity.
The following are further optimization or/and improvement of the technical scheme of the utility model:
the lower end of the inner wall of the valve rod hole can be provided with a lower inner ring groove, the valve rod outer side sleeve corresponding to the inner position of the lower inner ring groove is provided with a fixed sleeve, the outer side wall of the fixed sleeve is in interference fit with the inner wall of the lower inner ring groove, and the valve rod is in clearance fit with the inner wall of the fixed sleeve.
Above-mentioned packing gland can include the cylinder gland body, gland body inner channel forms valve rod installation passageway, the gland body passes through valve rod installation passageway suit in the valve rod outside, gland body lower extreme inserts in the clearance between valve rod and the last inner ring groove inner wall in order to compress tightly the packing, the outside extension in gland body outside that corresponds valve gap top position forms the outer ring platform, the mounting hole that link up from top to bottom is provided with along the circumferencial direction interval on the outer ring platform, wear to be equipped with the screw rod in the mounting hole, threaded connection has fastening nut on the screw rod that corresponds mounting hole top position, screw rod lower extreme fixedly connected with connecting block, the connecting block can dismantle fixed connection together through first fixing bolt and valve gap, screw rod and connecting block structure as an organic whole.
Above-mentioned mount can be including installing ring body, valve-stem nut and two backup pads in front and back, and the valve rod outside threaded connection who corresponds gland body top position has valve-stem nut, and installation ring body suit is in the valve-stem nut outside, and the installation ring body passes through second fixing bolt and valve-stem nut fixed mounting together, and the installation ring body is through two backup pads and valve gap top fixed connection in front and back.
The valve rod corresponding to the upper position of the fixing frame is fixedly provided with a hand wheel.
A pre-tightening screw sealing ring can be arranged between the pre-tightening screw and the inner wall of the pre-tightening screw mounting channel; the valve cover and the valve body are fixedly installed together through bolts, and a valve cover sealing gasket is arranged between the valve cover and the valve body.
The third sealing surface and the fourth sealing surface can be horizontal surfaces, and hard alloy layers are spray-welded on the first sealing surface, the second sealing surface, the third sealing surface and the fourth sealing surface.
The utility model has the advantages of reasonable and compact structure, high durability and convenient use, it is through the pretension spring, the pretension screw rod, vice valve clack, the setting in pressure release chamber, guarantee this device when closing, medium pressure rises to certain degree after in the front end pipeline, the medium can push away vice valve clack and carry out the pressure release, and then can effectively avoid the front end pipeline, the device takes place the superpressure and damages, still can adjust the pretension spring through adjusting the pretension screw rod to vice valve clack tight pressure in addition, and then adjust vice valve clack and upwards open required pressure, the suitability is strong, and is high-efficient, safe characteristics.
Drawings
Fig. 1 is a schematic sectional view of the preferred embodiment of the present invention.
Fig. 2 is an enlarged schematic view of a portion a of fig. 1.
Fig. 3 is a schematic top view of the preferred embodiment of the present invention.
The codes in the figures are respectively: the valve comprises a valve body 1, a valve cover 2, a valve rod 3, a main valve flap 4, a packing 5, a pre-tightening spring 6, a pre-tightening screw rod 7, an auxiliary valve flap 8, a valve cavity 9, a medium inlet channel 10, a medium outlet channel 11, a first sealing surface 12, a second sealing surface 13, a pre-tightening screw rod installation channel 14, a pressure relief cavity 15, a pressure relief channel 16, a third sealing surface 17, a fourth sealing surface 18, a pressure relief port 19, a fixing sleeve 20, a gland body 21, a screw rod 22, a fastening nut 23, a connecting block 24, a first fixing bolt 25, an installation ring body 26, a valve rod nut 27, a support plate 28, a second fixing bolt 29, a hand wheel 30, a pre-tightening screw rod sealing ring 31 and a valve cover sealing gasket 32.
Detailed Description
The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.
In the present invention, for convenience of description, the description of the relative position relationship of the components is described according to the layout mode of the attached drawing 1 in the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.
The invention will be further described with reference to the following examples and drawings:
as shown in attached figures 1, 2 and 3, the angle type plane sealing stop valve with the pressure relief function comprises a valve body 1, a valve cover 2, a valve rod 3, a main valve clack 4, a packing 5, a packing gland, a pre-tightening spring 6, a pre-tightening screw 7 and an auxiliary valve clack 8, wherein the valve cover 2 is fixedly installed at the upper end of the valve body 1, a valve cavity 9 is enclosed between the valve body 1 and the valve cover 2, a medium inlet channel 10 and a medium outlet channel 11 which are respectively communicated with the valve cavity 9 are arranged on the valve body 1, the medium inlet channel 10 is vertical, the opening of the outer end of the medium inlet channel is downward, the medium outlet channel 11 is horizontal, the opening of the outer end of the medium outlet channel is leftward, a valve rod hole which is communicated up and down is arranged on the valve cover 2, the lower end of the valve rod 3 vertically penetrates through the valve rod hole to extend into the valve cavity 9, an upper inner ring groove is arranged at the upper end of the inner ring groove, the packing 5 is arranged in a gap between the valve rod 3 and the inner ring groove, a packing gland used for compressing the packing 5 is arranged above the packing 5, an external thread is arranged on the outer side of the upper part of the valve rod 3, a fixing frame in threaded connection with the upper part of the valve rod 3 is fixedly arranged above the valve cover 2, a main valve flap 4 is arranged at the lower end of the valve rod 3, a first sealing surface 12 is arranged on the main valve flap 4, a second sealing surface 13 is arranged on the inner wall of the valve cavity 9 corresponding to the position around the inner end opening of the medium inlet channel 10, the first sealing surface 12 and the second sealing surface 13 are in sealing contact to close the medium inlet channel 10, the first sealing surface 12 and the second sealing surface 13 are horizontal planes, a pre-tightening screw rod installation channel 14 which is communicated up and down is arranged inside the valve rod 3, a pre-tightening screw rod 7 is in threaded connection with the pre-tightening screw rod installation channel 14, the upper end of the pre-tightening screw rod 7 penetrates out of the valve rod 3, a pressure relief cavity 15 communicated with the lower end of the pre-tightening screw rod installation channel 14 is arranged in the main valve flap 4 corresponding to the position of the medium inlet channel 10, and a vertical pressure relief through is arranged on the main valve flap 4 corresponding to communicate the pressure relief cavity 15 and the medium inlet channel 10 And the lower end of the pre-tightening screw 7 extends into the pressure relief cavity 15, the lower end of the pre-tightening screw 7 is connected with an auxiliary valve clack 8 through a pre-tightening spring 6, a third sealing surface 17 is arranged on the auxiliary valve clack 8, a fourth sealing surface 18 is arranged on the inner wall of the pressure relief cavity 15 corresponding to the position around the outlet of the pressure relief channel 16, the third sealing surface 17 and the fourth sealing surface 18 are in sealing contact to close the pressure relief channel 16, and a pressure relief opening 19 communicating the pressure relief cavity 15 and the valve cavity 9 is arranged on the wall of the main valve clack 4.
According to the requirement, the pre-tightening spring 6 is a compression spring, the upper end of the pre-tightening spring is fixedly connected with the pre-tightening screw 7, the lower end of the pre-tightening spring is fixedly connected with the auxiliary valve clack 8, the packing 5 is a graphite packing 5 or an asbestos-graphite composite packing 5, the packing 5 is tightly pressed between the packing gland and the bottom wall of the upper inner annular groove, therefore, a gap between the valve rod 3 and the valve cover 2 is sealed, and a plurality of pressure relief ports 19 communicating the pressure relief cavity 15 and the valve cavity 9 are arranged on the wall of the main valve clack 4 along the circumferential direction. When the device is in a closed state, namely the first sealing surface 12 and the second sealing surface 13 are in a sealing contact state, when the medium pressure in the front end pipeline rises to a certain value, the medium pushes the auxiliary valve flap 8 upwards to open the pressure relief channel 16, and the medium can flow into the medium outlet channel 11 through the pressure relief channel 16, the pressure relief cavity 15, the pressure relief port 19 and the medium outlet channel 9 in sequence, and then carry out the pressure release to the front end pipeline, effectively prevent the front end pipeline, the device takes place the condition of superpressure damage, after medium pressure drops to a definite value, vice valve clack 8 restores to the throne under pretension spring 6's effect and carries out the shutoff once more to pressure release channel 16, in addition accessible adjusting pretension screw 7 lower extreme adjusts pretension spring 6 to vice valve clack 8 tight pressure, and then adjust vice valve clack 8 and upwards open required pressure, the suitability is strong, medium inlet channel 10 and medium outlet channel 11 are mutually perpendicular from this can install this device in piping system's corner, 90 degrees elbows have not only been practiced thrift in the installation of being convenient for, first sealed face 12 and the sealed face 13 of second are the horizontal plane setting, from this the processing degree of difficulty has been reduced under the prerequisite of guaranteeing sealing performance, be convenient for production, manufacturing.
The angle type plane sealing stop valve with the pressure relief function can be further optimized or/and improved according to actual requirements:
as shown in fig. 1, a lower inner annular groove is formed at the lower end of the inner wall of the valve rod hole, a fixed sleeve 20 is sleeved on the outer side of the valve rod 3 corresponding to the inner position of the lower inner annular groove, the outer side wall of the fixed sleeve 20 is in interference fit with the inner wall of the lower inner annular groove, and the valve rod 3 is in clearance fit with the inner wall of the fixed sleeve 20. According to the requirement, the fixing sleeve 20 is an aluminum alloy fixing sleeve 20 or a brass fixing sleeve 20 or a graphite copper sleeve.
As shown in the attached drawing 1, the packing gland includes cylinder gland body 21, gland body 21 internal channel forms 3 installation passageways of valve rod, gland body 21 installs the passageway suit in the valve rod 3 outside through valve rod 3, gland body 21 lower extreme inserts in the clearance between valve rod 3 and the last inner ring inslot wall in order to compress tightly packing 5, the outside of gland body 21 that corresponds 2 top positions of valve gap extends outward and forms the outer ring platform, the outer ring bench is provided with the mounting hole that link up from top to bottom along the circumferencial direction interval, wear to be equipped with screw rod 22 in the mounting hole, threaded connection has fastening nut 23 on the screw rod 22 that corresponds the mounting hole top position, screw rod 22 lower extreme fixedly connected with connecting block 24, connecting block 24 can dismantle fixed connection together with valve gap 2 through first fixing bolt 25, screw rod 22 and connecting block 24 are structure as an organic whole. According to the demand, be equipped with the first bolt mounting hole that link up around on the connecting block 24, first fixing bolt 25 passes first bolt mounting hole and in order to be in the same place connecting block 24 and valve gap 2 detachable fixed mounting, threaded connection has fastening nut 23 on the screw rod 22 of corresponding mounting hole top position, can make gland body 21 lower extreme push down packing 5 through screwing up fastening nut 23 from this, thereby compress tightly packing 5 in the clearance between valve rod 3 and the last inner ring groove inner wall, whole packing gland simple structure, and convenient to manufacture, installation, fish screw rod 22 and connecting block also can directly be replaced with the flake bolt in addition.
As shown in fig. 1, the fixing frame includes a mounting ring 26, a stem nut 27, and two front and rear support plates 28, the stem nut 27 is connected to the outer side of the valve stem 3 corresponding to the upper position of the gland body 21 through a screw thread, the mounting ring 26 is sleeved on the outer side of the stem nut 27, the mounting ring 26 is fixedly mounted with the stem nut 27 through a second fixing bolt 29, and the mounting ring 26 is fixedly connected with the top of the valve cap 2 through the two front and rear support plates 28. Valve rod 3 and stem nut 27 threaded connection, stem nut 27 is through installation ring body 26, second fixing bolt 29, backup pad 28 fixed mounting is on valve gap 2, just can make main valve lamella 4 oscilaltion from this through rotatory valve rod 3, and then realize opening or close the purpose of medium inlet channel 10, two backup pads 28 set up around in addition, form packing gland installation space between two backup pads 28, the packing gland mountable is between two backup pads 28, thereby make overall structure compacter.
As shown in fig. 1 and 3, a hand wheel 30 is fixedly mounted on the valve rod 3 corresponding to the upper position of the fixing frame. Thereby driving the main valve flap 4 up and down by rotating the hand wheel 30.
As shown in the attached drawing 1, a pre-tightening screw sealing ring 31 is arranged between the pre-tightening screw 7 and the inner wall of the pre-tightening screw mounting channel 14; the valve cover 2 and the valve body 1 are fixedly installed together through bolts, and a valve cover sealing gasket 32 is arranged between the valve cover 2 and the valve body 1. According to the requirement, the pre-tightening screw sealing ring 31 is a fluororubber O-shaped ring, the pre-tightening screw mounting channel 14 is a three-stage stepped channel gradually increasing from top to bottom, the pre-tightening screw 7 is a three-stage stepped shaft type structure gradually increasing from top to bottom, the outer side of the small diameter section of the pre-tightening screw 7 is provided with an external thread, the inner wall of the small diameter section of the pre-tightening screw mounting channel 14 is provided with an internal thread, the small diameter section of the pre-tightening screw 7 is in threaded connection with the small diameter section of the pre-tightening screw mounting channel 14, the pre-tightening screw sealing ring 31 is arranged between the middle diameter section of the pre-tightening screw 7 and the inner wall of the middle diameter section of the pre-tightening screw mounting channel 14, the pre-tightening screw sealing ring 31 is arranged between the large diameter section of the pre-tightening screw 7 and the inner wall of the large diameter section of the pre-tightening screw mounting channel 14, thereby ensuring the tightness between the pre-tightening screw 7 and the inner wall of the pre-tightening screw mounting channel 14, and preferably, the valve cover sealing gasket 32 can be a graphite composite gasket.
Preferably, the third sealing surface 17 and the fourth sealing surface 18 are both horizontal surfaces, and a hard alloy layer is spray welded on the first sealing surface 12, the second sealing surface 13, the third sealing surface 17 and the fourth sealing surface 18. The third sealing surface 17 and the fourth sealing surface 18 are both horizontal surfaces, so that the processing difficulty is reduced on the premise of ensuring the sealing performance, the production and the manufacture are convenient, and the hard alloy layer is spray-welded on the sealing surfaces, so that the sealing performance between the sealing surfaces is improved, and the wear resistance of the sealing surfaces is also enhanced.
Above technical feature constitutes the utility model discloses a best embodiment, it has stronger adaptability and best implementation effect, can increase and decrease unnecessary technical feature according to actual need, satisfies the demand of different situation.
Claims (10)
1. An angle type plane sealing stop valve with a pressure relief function is characterized by comprising a valve body, a valve cover, a valve rod, a main valve flap, a packing gland, a pre-tightening spring, a pre-tightening screw rod and an auxiliary valve flap, wherein the valve cover is fixedly installed at the upper end of the valve body, a valve cavity is defined between the valve body and the valve cover, a medium inlet channel and a medium outlet channel which are respectively communicated with the valve cavity are arranged on the valve body, the medium inlet channel is vertical, the outer end opening of the medium inlet channel is downward, the medium outlet channel is horizontal, the outer end opening of the medium outlet channel is leftward, a valve rod hole which is communicated up and down is arranged on the valve cover, the lower end of the valve rod vertically penetrates through the valve rod hole and extends into the valve cavity, an upper inner annular groove is arranged at the upper end of the inner wall of the valve rod hole, the packing is arranged in a gap between the inner wall of the upper inner annular groove and the valve rod, the packing gland used for compressing the packing is arranged above the packing, and an external thread is arranged on the outer side of the upper part of the valve rod, a fixing frame in threaded connection with the upper part of the valve rod is fixedly arranged above the valve cover, a main valve flap is arranged at the lower end of the valve rod, a first sealing surface is arranged on the main valve flap, a second sealing surface is arranged on the inner wall of the valve cavity corresponding to the position around an inner end opening of the medium inlet channel, the first sealing surface and the second sealing surface are in sealing contact to close the medium inlet channel, the first sealing surface and the second sealing surface are both horizontal planes, a pre-tightening screw rod installation channel which is communicated up and down is arranged in the valve rod, the pre-tightening screw rod is in threaded connection in the pre-tightening screw rod installation channel, the upper end of the pre-tightening screw rod penetrates out of the valve rod, a pressure relief cavity communicated with the lower end of the pre-tightening screw rod installation channel is arranged in the main valve flap corresponding to the position of the medium inlet channel, a vertical pressure relief channel communicated with the pressure relief cavity and the medium inlet channel is arranged on the main valve flap corresponding to the position of the medium inlet channel, the lower end of the pre-tightening screw rod extends into the pressure relief cavity, and is connected with an auxiliary valve flap through a pre-tightening spring, the auxiliary valve flap is provided with a third sealing surface, a fourth sealing surface is arranged on the inner wall of the pressure relief cavity corresponding to the position around the outlet of the pressure relief channel, the third sealing surface and the fourth sealing surface are in sealing contact to close the pressure relief channel, and the wall of the main valve flap is provided with a pressure relief opening communicating the pressure relief cavity and the valve cavity.
2. The angle type plane sealing stop valve with pressure relief function as claimed in claim 1, wherein the lower end of the inner wall of the valve stem hole is provided with a lower inner annular groove, the outer side of the valve stem corresponding to the inner position of the lower inner annular groove is sleeved with a fixed sleeve, the outer side wall of the fixed sleeve is in interference fit with the inner wall of the lower inner annular groove, and the valve stem is in clearance fit with the inner wall of the fixed sleeve.
3. The angle type plane sealing stop valve with the pressure relief function according to claim 1 or 2, characterized in that the packing gland comprises a cylindrical gland body, an internal channel of the gland body forms a valve rod installation channel, the gland body is sleeved outside the valve rod through the valve rod installation channel, the lower end of the gland body is inserted into a gap between the valve rod and the inner wall of the upper inner ring groove to compress the packing, the outer side of the gland body corresponding to the position above the valve cover extends outwards to form an outer ring platform, the outer ring platform is provided with mounting holes which are communicated up and down at intervals along the circumferential direction, screw rods penetrate through the mounting holes, fastening nuts are in threaded connection with the screw rods corresponding to the position above the mounting holes, a connecting block is fixedly connected to the lower ends of the screw rods, the connecting block is detachably and fixedly connected with the valve cover through first fixing bolts, and the screw rods and the connecting block are of an integrated structure.
4. The angle type plane sealing stop valve with the pressure relief function as claimed in claim 3, wherein the fixing frame comprises a mounting ring body, a valve rod nut, a front support plate and a rear support plate, the valve rod nut is in threaded connection with the outer side of the valve rod corresponding to the position above the gland body, the mounting ring body is sleeved on the outer side of the valve rod nut, the mounting ring body is fixedly mounted with the valve rod nut through a second fixing bolt, and the mounting ring body is fixedly connected with the top of the valve cover through the front support plate and the rear support plate.
5. The angle type plane sealing stop valve with the pressure relief function as claimed in claim 4, wherein a hand wheel is fixedly mounted on the valve rod corresponding to the position above the fixing frame.
6. The angle type plane sealing stop valve with the pressure relief function according to claim 1, 2, 4 or 5, characterized in that a pre-tightening screw sealing ring is arranged between the pre-tightening screw and the inner wall of the pre-tightening screw mounting channel; the valve cover and the valve body are fixedly installed together through bolts, and a valve cover sealing gasket is arranged between the valve cover and the valve body.
7. The angle type plane sealing stop valve with the pressure relief function according to claim 3, wherein a pre-tightening screw sealing ring is arranged between the pre-tightening screw and the inner wall of the pre-tightening screw mounting channel; the valve cover and the valve body are fixedly installed together through bolts, and a valve cover sealing gasket is arranged between the valve cover and the valve body.
8. The angle type plane sealing stop valve with the pressure relief function according to claim 1, 2, 4 or 5, characterized in that the third sealing surface and the fourth sealing surface are horizontal surfaces, and hard alloy layers are spray-welded on the first sealing surface, the second sealing surface, the third sealing surface and the fourth sealing surface.
9. The angle type plane sealing stop valve with the pressure relief function as claimed in claim 3, wherein the third sealing surface and the fourth sealing surface are horizontal surfaces, and hard alloy layers are spray-welded on the first sealing surface, the second sealing surface, the third sealing surface and the fourth sealing surface.
10. The angle type plane sealing stop valve with the pressure relief function according to claim 6, wherein the third sealing surface and the fourth sealing surface are horizontal surfaces, and hard alloy layers are spray-welded on the first sealing surface, the second sealing surface, the third sealing surface and the fourth sealing surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120277941.5U CN214699258U (en) | 2021-02-01 | 2021-02-01 | Angle type plane sealing stop valve with pressure relief function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120277941.5U CN214699258U (en) | 2021-02-01 | 2021-02-01 | Angle type plane sealing stop valve with pressure relief function |
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| CN214699258U true CN214699258U (en) | 2021-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120277941.5U Active CN214699258U (en) | 2021-02-01 | 2021-02-01 | Angle type plane sealing stop valve with pressure relief function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114871971A (en) * | 2022-06-21 | 2022-08-09 | 天长市安彩仪表有限公司 | Fastening tool for machining wear-resistant head |
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2021
- 2021-02-01 CN CN202120277941.5U patent/CN214699258U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114871971A (en) * | 2022-06-21 | 2022-08-09 | 天长市安彩仪表有限公司 | Fastening tool for machining wear-resistant head |
| CN114871971B (en) * | 2022-06-21 | 2023-11-24 | 天长市安彩仪表有限公司 | Fastening tool for machining grinding head resistance |
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