CN103016749B - Automatic water drainage valve and air brake system - Google Patents
Automatic water drainage valve and air brake system Download PDFInfo
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- CN103016749B CN103016749B CN201210534174.7A CN201210534174A CN103016749B CN 103016749 B CN103016749 B CN 103016749B CN 201210534174 A CN201210534174 A CN 201210534174A CN 103016749 B CN103016749 B CN 103016749B
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- passage
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- drain valve
- automatic drain
- intake tunnel
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Abstract
The invention provides an automatic water drainage valve and an air brake system. The automatic water drainage valve comprises a valve body, wherein a water inlet channel and a water drainage channel are formed in the valve body; a valve component which automatically controls the switching-on and switching-off of the water inlet channel and the water drainage channel is arranged between the water inlet channel and the water drainage channel; a manual water drainage channel which is communicated with the water inlet channel is also formed in the valve body; and a manual control switch which controls the switching-on and switching-off of the water inlet channel and controls the switching-on and switching-off of the water inlet channel and the manual water drainage channel is arranged on the valve body. The automatic water drainage valve provided by the invention has the advantages that on one hand, automatic water drainage is realized by controlling the switching-on and switching-off of the water drainage channel through the vertical motion of the valve component; and on the other hand, manual water drainage is realized by controlling the switching-on and switching-off of the water inlet channel and the water drainage channel through the manual control switch.
Description
Technical field
The present invention relates to valve gate technology, particularly relate to a kind of automatic drain valve for locomotive air braking and air braking system.
Background technique
Internal combustion locomotive is braked by air braking system, to guarantee that locomotive can be braked accurately.Wherein, air braking system comprises the parts such as air compressor, air drier and total reservoir.Pressurized air got by air compressor, and containing water in the pressurized air that air compressor is got, carry out drying by air drier to air, to remove moisture, dried air resupplies total reservoir.When air drier cannot normally work, in total reservoir, have ponding, cannot the air of normal supply braking line drying.
When air drier fault, in order to ensure the air oxygen detrition in braking line, need the ponding in total reservoir to discharge.In prior art, as shown in Figure 1, generally on total reservoir 1, drain valve is housed, comprise be connected with total reservoir 1 often open cock 11 and normally closed cock 12, often open cock 11 and be also connected with automatic drain valve 13.When air drier fault, by often opening cock 11 and water can discharge by automatic drain valve 13, and when automatic drain valve 13 breaks down, close by controlling often to open cock 11, avoiding leaking out, simultaneously by controlling normally closed cock 12, manually the ponding in total reservoir 1 being discharged.
Because the installing space of total reservoir bottom is limited, in prior art by automatic drain valve, often to open the drain valve volume that cock and normally closed cock form comparatively large, installs to take up room large, impact can be brought on the installation of miscellaneous part in locomotive, increase the difficulty of installing.
Summary of the invention
The invention provides a kind of automatic drain valve and air braking system, in order to solve problems of the prior art.
The invention provides a kind of automatic drain valve, comprise valve body, described valve body is provided with intake tunnel and drainage channel;
Between described intake tunnel and drainage channel, be provided with the valve member automatically controlling described intake tunnel and drainage channel break-make;
Described valve body is also provided with the manual drainage passage be communicated with described intake tunnel, and described valve body is also provided with the described intake tunnel break-make of control, and control the hand control switch of described intake tunnel and manual drainage passage break-make.
Automatic drain valve as above, preferably, described intake tunnel is the L-type passage be made up of first passage and second channel, is provided with described valve member between wherein said first passage and described first row water channel;
Described valve body offers switching channels, and described switching channels and described first passage are coaxially arranged, and are provided with described hand control switch in described switching channels.
Automatic drain valve as above, preferably, described manual drainage passage is communicated with described intake tunnel by described switching channels, and the opening of described manual drainage passage and described switching channels connectivity part is positioned at the position away from described switching channels and second channel jointing place;
Described hand control switch comprises running shaft, described running shaft is provided with the first shutoff baffle plate of first passage described in shutoff, and the second shutoff baffle plate of switching channels described in shutoff, the distance between described first shutoff baffle plate and the second shutoff baffle plate is greater than the aperture of described second channel.
Automatic drain valve as above, preferably, described switching channels, at the opening of described valve body, is provided with mounting plate;
Described mounting plate offers through hole, and described running shaft is located in described through hole.
Automatic drain valve as above, preferably, one end that described running shaft stretches out described valve body is provided with handle.
Automatic drain valve as above, preferably, described valve inner is provided with the cavity of accommodating described valve member, described intake tunnel and drainage channel respectively with described cavity connects;
Described valve member comprises piston assembly and switch lining, wherein:
Described piston assembly comprises piston and plugging plate, connected by piston rod between described piston and plugging plate, spring is provided with between projection on described piston and described cavity inner wall, described projection is between described piston and described plugging plate, and described piston is positioned at described cavity one end away from described drainage channel;
Described switch lining is installed in the one end near described drainage channel in described cavity, and the middle part of described switch lining offers water flowing through hole, described piston rod is through described water flowing through hole, described plugging plate is between described switch lining and described drainage channel, and the area of described plugging plate is greater than the area of described water flowing through hole;
Described valve body is also provided with air intake passage, described air intake passage is communicated with the piston cavity formed between described piston and described cavity, described piston cavity is positioned at the one end away from described drainage channel, and the aperture of described air intake passage is less than the aperture of described drainage channel.
Automatic drain valve as above, preferably, be also provided with stationary bushing between described piston and described plugging plate, described stationary bushing is installed in described cavity, and is provided with flexible sheet between described piston and described stationary bushing.
The present invention also provides a kind of air braking system, comprising: total reservoir and automatic drain valve, described total reservoir is provided with the intake grill be connected with air compressor, and the exhaust outlet be connected with braking line;
On described total reservoir, be also provided with the drain opening be connected with described automatic drain valve, the intake tunnel on described drain opening and described automatic drain valve connects;
The automatic drain valve that described automatic drain valve provides for adopting the invention described above.
Automatic drain valve provided by the invention and air braking system, under the ponding effect entering intake tunnel, valve member can open the path between intake tunnel and drainage channel automatically, carries out draining, and when the automatic drainage function of valve member lost efficacy, then by hand control switch, close the path between intake tunnel and drainage channel, the path between intake tunnel and manual drainage passage can be opened simultaneously, carry out draining, and when not draining, manually switch also can disconnect the path between intake tunnel and manual drainage passage, avoid gas leakage, like this, automatic drain valve of the present invention just can realize the automatic discharge of ponding and manually discharge, compared to prior art, automatic drain valve provided by the invention is owing to being provided with hand control switch to realize manual drainage, volume is little, and do not need when being installed to total reservoir to set up other devices below total reservoir, the installing space taken is little, save cost.
Accompanying drawing explanation
Figure 1 shows that the structural representation of air braking system of the prior art;
The structural representation of the automatic drain valve that Fig. 2 provides for the embodiment of the present invention;
Fig. 3 is the structural representation of the hand control switch shown in Fig. 2;
Fig. 4, Fig. 5, Fig. 6 are respectively the action schematic diagram during manual drainage of automatic drain valve shown in Fig. 2;
The structural representation of the air braking system that Fig. 7 provides for the embodiment of the present invention.
Description of reference numerals:
1,9: total reservoir; 11: often open cock; 12: normally closed cock;
13: automatic drain valve; 2: valve body; 21: switching channels;
23: mounting plate; 3: intake tunnel; 31: first passage;
32: second channel; 4: hand control switch; 41: running shaft;
42: the first shutoff baffle plates; 43: the second shutoff baffle plates; 44: handle;
5: drainage channel; 6: valve member; 61: piston;
62: plugging plate; 63: piston rod; 64: stationary bushing;
65: flexible sheet; 66: spring; 67: switch lining;
7: manual drainage passage; 8: air intake passage; 85: piston cavity;
91: intake grill; 92: exhaust outlet; 93: drain opening;
10: automatic drain valve.
Embodiment
The structural representation of the automatic drain valve that Fig. 2 provides for the embodiment of the present invention.As shown in Figure 2, the automatic drain valve that the present embodiment provides, mainly comprises: valve body 2, valve body 2 is provided with intake tunnel 3 and drainage channel 5; Between intake tunnel 3 and drainage channel 5, be provided with the valve member 6 automatically controlling intake tunnel 3 and drainage channel 5 break-make; Valve body 2 is also provided with the manual drainage passage 7 be communicated with intake tunnel 3, and valve body 2 is also provided with control intake tunnel 3 break-make, and control the hand control switch 4 of intake tunnel 3 and manual drainage passage 7 break-make.
In the present embodiment, intake tunnel 3 is for being connected with total reservoir, automatic drain valve is entered by intake tunnel 3 from total reservoir long-pending water and air out, to act on valve member on 6, ponding can produce downward pressure to valve member 6, when described pressure be greater than valve member 6 bear pressure time, valve member 6 will control drainage channel 5 and open, ponding spills out from drainage channel 5, after ponding is discharged, described pressure reduces, and drainage channel 5 is closed by valve member 6 again, achieves Auto-drainage.When losing efficacy in valve member 6 fault, cannot normal Auto-drainage, by rotary manual control switch 4 to suitable position, intake tunnel 3 is closed, avoids gas leakage, simultaneously, also by rotary manual control switch 4, opened by manual drainage passage 7, manually water is discharged by drainage channel 7, realizes manual drainage.
The automatic drain valve that the embodiment of the present invention provides, under the ponding effect entering intake tunnel, valve member can open the path between intake tunnel and drainage channel automatically, carries out draining, and when the automatic drainage function of valve member lost efficacy, then by hand control switch, close the path between intake tunnel and drainage channel, the path between intake tunnel and manual drainage passage can be opened simultaneously, carry out draining, and when not draining, manually switch also can disconnect the path between intake tunnel and manual drainage passage, avoid gas leakage, like this, automatic drain valve of the present invention just can realize the automatic discharge of ponding and manually discharge, compared to prior art, automatic drain valve provided by the invention is owing to being provided with hand control switch to realize manual drainage, volume is little, and do not need when being installed to total reservoir to set up other devices below total reservoir, the installing space taken is little, save cost.
In the present embodiment, preferably, intake tunnel 3 can for the L-type passage be made up of first passage 31 and second channel 32, and second channel 32 is communicated with for being connected with the drain opening on total reservoir, ponding in total reservoir enters automatic valve internal drainage valve from second channel 32, then flow to first passage 31.Wherein, above-mentioned valve member 6 is provided with between first passage 31 and drainage channel 5.Valve body 2 inside is provided with the cavity of accommodating valve member 6, and intake tunnel 3 and drainage channel 5 are respectively and cavity connects.
In the present embodiment, as shown in Figure 2, valve member 6 specifically can comprise piston assembly and switch lining, wherein, piston assembly comprises piston 61 and plugging plate 62, is connected between piston 61 and plugging plate 62 by piston rod 63, is provided with spring 66 between the projection on piston 61 and cavity inner wall, protruding between piston 61 and plugging plate 62, piston 61 is positioned at cavity one end away from drainage channel 5.Particularly, piston 61 and plugging plate 62 are provided with through hole, piston rod 63 passes the through hole of piston 61 and plugging plate 62, piston 61, plugging plate 62 is linked into an integrated entity.
In the present embodiment, switch lining 67 is installed in the one end near drainage channel 5 in cavity, and the middle part of switch lining 67 offers water flowing through hole, piston rod 63 is through water flowing through hole, plugging plate 62 is between switch lining 67 and drainage channel 5, and the area of plugging plate 62 is greater than the area of described water flowing through hole.
Preferably, valve body 2 is also provided with air intake passage 8, air intake passage 8 and piston 61 with and cavity between form piston cavity 85 and be communicated with, this piston cavity 85 is positioned at the one end away from drainage channel 5, and the aperture of air intake passage 8 is less than the aperture of drainage channel 3.Preferably, in the present embodiment, intake tunnel 3 is identical with the aperture of drainage channel 5, and the aperture of air intake passage 8 is 1/2nd of intake tunnel 3.Air intake passage 8 can provide the air compressor of gas to be connected with for total reservoir, and the air with certain pressure of air compressor discharge is used for supplying total reservoir on the one hand, is used on the other hand supplying air intake passage 8.Because air belongs to compressible fluid, and air intake passage 8 aperture is less than the aperture of intake tunnel 3, compressed after the air with uniform pressure enters air intake passage 8, thus the air pressure flowed out from air intake passage 8 is increased, be greater than the air pressure flowed out from intake tunnel 3, and piston 61 will will open plugging plate 62 under the promotion of air pressure and ponding pressure, make intake tunnel 3 and drainage channel 5 conducting, the ponding in total reservoir will be discharged.
In the present embodiment, because the air in reservoir also can enter in drain valve, in order to prevent gas leakage, between piston 61 and plugging plate 62, be also provided with stationary bushing 64, stationary bushing 64 is installed in cavity, and is provided with flexible sheet 65 between piston 61 and stationary bushing 64.The centre of stationary bushing 64 and flexible sheet 65 offers through hole respectively, piston rod 63 can be passed, gripped by flexible sheet 65 by stationary bushing 64.Intake tunnel 3 and cavity are separated by flexible sheet 65, on the one hand, the air that enters from intake tunnel 3 and water is made cannot to enter cavity top, on the other hand, make the air entered from air intake passage 8 cannot enter the bottom of cavity, maintain the pressure difference that cavity is upper and lower.
In the present embodiment, as shown in Figure 2, in figure, the flow direction of arrow instruction ponding, after long-pending water and air enters valve body from intake tunnel 3, successively by second channel 32, first passage 31, acts on plugging plate 62.Because long-pending water and air all has certain pressure, long-pending water and air can produce the first downward pressure to plugging plate 62, and the first pressure produces the first pressure.Meanwhile, air also produces the second pressure upwards to piston rod 63, stationary bushing 64 and flexible sheet 65, can produce the second pressure accordingly.And enter the air in piston cavity 85 from air intake passage 8, the 3rd downward pressure can be produced to piston 61 and piston rod 63, produce the 3rd pressure.Act on lifting surface area on piston rod 63, stationary bushing 64 and flexible sheet 65 because the 3rd pressure lifting surface area acted on piston 61 and piston rod 63 is less than the second pressure, and the 3rd pressure is greater than the second pressure, therefore, the 3rd pressure is greater than the second pressure.From the direction of above-mentioned pressure, the direction of the first pressure and the 3rd pressure straight down, the effect of the second pressure straight up, on the whole, downward total pressure can be produced to piston rod 63, when ponding reaches a certain amount of, this total pressure produced will be greater than external atmosphere pressure, now, piston assembly (piston 61, piston rod 63 and plugging plate 62) will entirety move downward, plugging plate 62 opens the water flowing through hole on switch lining 67, and ponding is discharged by drainage channel 5, and now spring 66 is compressed.After ponding and partial air discharge, first pressure and the second pressure reduce, described total pressure reduces, spring 66 recovers deformation gradually, the precompression of spring 66 promotes piston 61 and moves upward, piston 61 drives piston assembly together to move upward, when spring 66 recovers deformation completely, water flowing through hole on switch lining 67 is closed by plugging plate 62 again, when the water level in Auto-drainage valve chamber rises to certain altitude, piston assembly can entirety move downward again under the effect of the pressure, drainage channel 5 is opened, water is discharged, and so forth, just Auto-drainage can be realized.In the present embodiment, realize automatic drainage function by valve member 6.
In the present embodiment, in order to realize manual drainage, correspondingly, valve body 2 offers switching channels 21, switching channels 21 and first passage 31 are coaxially arranged, and hand control switch 4 is arranged in switching channels 21.Fig. 3 is the structural representation of the hand control switch shown in Fig. 2, as shown in Figure 3, hand control switch 4 comprises running shaft 41, running shaft 41 is provided with the first shutoff baffle plate 42 of shutoff first passage 31, and the second shutoff baffle plate 43 of shutoff switching channels 21.First shutoff baffle plate 42 is arranged on the end that running shaft 41 stretches into valve body 2, the shape of the first shutoff baffle plate 42 and the second shutoff baffle plate 43 will adapt to the shape of first passage 31 and switching channels 21, distance between first shutoff baffle plate 42 and the second shutoff baffle plate 43 is greater than the aperture of second channel 32, second channel 32 can be closed by the first shutoff baffle plate 42 and the second shutoff baffle plate 43, and can be convenient mobile in first passage 31 and switching channels 21.One end that running shaft 41 stretches out valve body 2 is also provided with handle 44, easy-to-operat hand control switch 4.In order to make the better tightness of drain valve, switching channels 21, at the opening of valve body 2, is provided with mounting plate 23.Mounting plate 23 offers through hole, and running shaft 41 is located in through hole.
In the present embodiment, as shown in Figure 2, manual drainage passage 7 is communicated with intake tunnel 3 by switching channels 21, and manual drainage passage 7 and the opening of switching channels 21 connectivity part are positioned at away from the position of switching channels 21 with second channel 32 jointing place.
Fig. 4, Fig. 5, Fig. 6 are respectively the action schematic diagram during manual drainage of automatic drain valve shown in Fig. 2.Particularly, automatic drain valve can Auto-drainage time, hand control switch 4 is in position shown in Fig. 4, can be adjusted the size of intake tunnel 3 amount of inlet water by rotary manual control switch 4, when hand control switch 4 rotates to position shown in Fig. 4, the water accumulating volume that first passage 31 enters reduces.When automatic drain valve breaks down, when cannot realize Auto-drainage, by rotary manual control switch 4 to suitable position, second channel 32 is closed, thus prevent gas leakage.Particularly, hand control switch 4 can be rotated to the position shown in Fig. 5, make the first shutoff baffle plate 42 of hand control switch 4 by first passage 31 shutoff, the second shutoff baffle plate 43 is by switching channels 21 shutoff, now long-pending water and air is blocked in second channel 32, thus can prevent gas leakage.When the ponding in reservoir becomes many, ponding is needed to discharge, position shown in rotary manual control switch 4 to Fig. 6, at this moment, first shutoff baffle plate 42 will first passage 32 shutoff, and switching channels 21 is opened by the second shutoff baffle plate 43, and ponding enters switching channels 21 from second channel 32, by the manual drainage passage 7 be communicated with switching channels 21, ponding is discharged, the flow direction direction as shown by the arrows in Figure 6 of ponding.After ponding is discharged, position shown in rotary manual control switch 4 to Fig. 4, again by first passage 31 and switching channels 21 shutoff, achieves manual drainage function easily.
Automatic drain valve provided by the invention, can not only realize Auto-drainage, owing to being provided with hand control switch on automatic drain valve, when automatic drain valve breaks down, also realizes manual drainage by hand control switch and prevents drain valve from leaking gas.Compared to prior art, automatic drain valve small volume provided by the invention, the space that installation takies is little, does not need to set up other devices, provides cost savings.
The present invention also provides a kind of air braking system, Fig. 7 is the structural representation of air braking system of the present invention, as shown in Figure 7, air braking system provided by the invention comprises: total reservoir 9 and automatic drain valve 10, total reservoir 9 is provided with the intake grill 91 be connected with air compressor, and the exhaust outlet 92 be connected with braking line.Total reservoir 9 is also provided with the drain opening 93 be connected with automatic drain valve 10, drain opening 93 with on automatic drain valve 10 intake tunnel be connected, wherein, automatic drain valve 10 is for adopting the automatic drain valve shown in Fig. 2, concrete structure see the explanation of above-mentioned automatic drain valve embodiment, can not repeat them here.
In the present embodiment, total reservoir 9 can be connected with air compressor, the air of compression can pass in total reservoir 9 by intake grill 91 by air compressor, being entrained with a small amount of moisture and also can entering total reservoir 9 from intake grill 91 with air wherein, ponding in total reservoir 9 enters automatic drain valve 10 by drain opening 93, in time ponding is discharged by automatic drain valve 10, ensure the air of total reservoir 9 energy normal supply braking line drying.
In the practical process of reality, exsiccator can also be provided with between total reservoir 9 and air compressor, containing water in the pressurized air that air compressor is got, by air drier, drying is carried out to air, to remove moisture, dried air enters total reservoir 9 by the pipeline between air drier and total reservoir 9 from intake grill 91, also can draw a pipeline on the dryer in addition and be connected with the air intake passage of automatic drain valve 10, is used for supplying automatic drain valve 10 air.
Air braking system provided by the invention, by automatic drain valve, the ponding in total reservoir is discharged automatically, automatic drain valve fault cannot Auto-drainage time, hand control switch by automatic drain valve is arranged realizes manual drainage, ponding in total reservoir can be discharged in time, what ensure total reservoir supply braking line is dry air, and whole air braking system can normally be worked.
Last it is noted that above each embodiment is only in order to illustrate technological scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technological scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristics; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technological scheme.
Claims (7)
1. an automatic drain valve, is characterized in that, comprises valve body, described valve body is provided with intake tunnel and drainage channel;
Between described intake tunnel and drainage channel, be provided with the valve member automatically controlling described intake tunnel and drainage channel break-make;
Described intake tunnel is the L-type passage be made up of first passage and second channel, is provided with described valve member between wherein said first passage and described drainage channel;
Described valve body is also provided with the manual drainage passage be communicated with described intake tunnel, and described valve body is also provided with the described intake tunnel break-make of control, and control the hand control switch of described intake tunnel and manual drainage passage break-make;
Described valve body offers switching channels, and described switching channels and described first passage are coaxially arranged, and are provided with described hand control switch in described switching channels.
2. automatic drain valve according to claim 1, it is characterized in that, described manual drainage passage is communicated with described intake tunnel by described switching channels, and the opening of described manual drainage passage and described switching channels connectivity part is positioned at the position away from described switching channels and second channel jointing place;
Described hand control switch comprises running shaft, described running shaft is provided with the first shutoff baffle plate of first passage described in shutoff, and the second shutoff baffle plate of switching channels described in shutoff, the distance between described first shutoff baffle plate and the second shutoff baffle plate is greater than the aperture of described second channel.
3. automatic drain valve according to claim 2, is characterized in that, described switching channels, at the opening of described valve body, is provided with mounting plate;
Described mounting plate offers through hole, and described running shaft is located in described through hole.
4. automatic drain valve according to claim 3, is characterized in that, one end that described running shaft stretches out described valve body is provided with handle.
5., according to the arbitrary described automatic drain valve of claim 1-4, it is characterized in that, described valve inner is provided with the cavity of accommodating described valve member, described intake tunnel and drainage channel respectively with described cavity connects;
Described valve member comprises piston assembly and switch lining, wherein:
Described piston assembly comprises piston and plugging plate, connected by piston rod between described piston and plugging plate, spring is provided with between projection on described piston and described cavity inner wall, described projection is between described piston and described plugging plate, and described piston is positioned at described cavity one end away from described drainage channel;
Described switch lining is installed in the one end near described drainage channel in described cavity, and the middle part of described switch lining offers water flowing through hole, described piston rod is through described water flowing through hole, described plugging plate is between described switch lining and described drainage channel, and the area of described plugging plate is greater than the area of described water flowing through hole;
Described valve body is also provided with air intake passage, described air intake passage is communicated with the piston cavity formed between described piston and described cavity, described piston cavity is positioned at the one end away from described drainage channel, and the aperture of described air intake passage is less than the aperture of described drainage channel.
6. automatic drain valve according to claim 5, is characterized in that, is also provided with stationary bushing between described piston and described plugging plate, and described stationary bushing is installed in described cavity, and is provided with flexible sheet between described piston and described stationary bushing.
7. an air braking system, is characterized in that, comprising: total reservoir and automatic drain valve, described total reservoir is provided with the intake grill be connected with air compressor, and the exhaust outlet be connected with braking line;
On described total reservoir, be also provided with the drain opening be connected with described automatic drain valve, described drain opening is communicated with the intake tunnel on described automatic drain valve;
Described automatic drain valve is adopt the arbitrary described automatic drain valve of claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210534174.7A CN103016749B (en) | 2012-12-11 | 2012-12-11 | Automatic water drainage valve and air brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210534174.7A CN103016749B (en) | 2012-12-11 | 2012-12-11 | Automatic water drainage valve and air brake system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103016749A CN103016749A (en) | 2013-04-03 |
| CN103016749B true CN103016749B (en) | 2015-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210534174.7A Expired - Fee Related CN103016749B (en) | 2012-12-11 | 2012-12-11 | Automatic water drainage valve and air brake system |
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| CN (1) | CN103016749B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103407438B (en) * | 2013-08-20 | 2015-12-09 | 瑞立集团瑞安汽车零部件有限公司 | Piston type pneumatic control valve |
| CN113026693A (en) * | 2021-03-16 | 2021-06-25 | 宁波市水利水电规划设计研究院有限公司 | Intelligent water inlet and outlet equipment for farmland |
| CN114150740B (en) * | 2021-11-29 | 2023-09-29 | 厦门标尔玛卫浴科技有限公司 | Delay drainage structure and delay drainage method of drainage valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101072964A (en) * | 2004-12-10 | 2007-11-14 | 喜开理株式会社 | Diaphragm valve |
| CN201574869U (en) * | 2009-12-07 | 2010-09-08 | 浙江双富电力设备有限公司 | Manual draining valve having seal tightening device |
| CN102734475A (en) * | 2012-07-09 | 2012-10-17 | 株洲联诚集团有限责任公司 | Automatic water draining valve for locomotives |
| CN202946696U (en) * | 2012-12-11 | 2013-05-22 | 北京二七轨道交通装备有限责任公司 | Automatic drain valve and air braking system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101795910A (en) * | 2007-09-04 | 2010-08-04 | 丰田自动车株式会社 | Electromagnetic valve, control method thereof, and brake control system |
-
2012
- 2012-12-11 CN CN201210534174.7A patent/CN103016749B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101072964A (en) * | 2004-12-10 | 2007-11-14 | 喜开理株式会社 | Diaphragm valve |
| CN201574869U (en) * | 2009-12-07 | 2010-09-08 | 浙江双富电力设备有限公司 | Manual draining valve having seal tightening device |
| CN102734475A (en) * | 2012-07-09 | 2012-10-17 | 株洲联诚集团有限责任公司 | Automatic water draining valve for locomotives |
| CN202946696U (en) * | 2012-12-11 | 2013-05-22 | 北京二七轨道交通装备有限责任公司 | Automatic drain valve and air braking system |
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| CN103016749A (en) | 2013-04-03 |
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Address after: 100072 Beijing city Fengtai District Changxindian Yang Gong Zhuang No. 1 Patentee after: CNR BEIJING FEB.7TH LOCOMOTIVE CO., LTD. Address before: 100072 Beijing city Fengtai District Changxindian Yang Gong Zhuang No. 1 Patentee before: Beijing Erqi Railway Traffic Equipment Co., Ltd. |
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Granted publication date: 20150225 Termination date: 20181211 |