CN111216744A - Sanding device for locomotive - Google Patents
Sanding device for locomotive Download PDFInfo
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- CN111216744A CN111216744A CN201911381157.2A CN201911381157A CN111216744A CN 111216744 A CN111216744 A CN 111216744A CN 201911381157 A CN201911381157 A CN 201911381157A CN 111216744 A CN111216744 A CN 111216744A
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- sanding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C15/00—Maintaining or augmenting the starting or braking power by auxiliary devices and measures; Preventing wheel slippage; Controlling distribution of tractive effort between driving wheels
- B61C15/08—Preventing wheel slippage
- B61C15/10—Preventing wheel slippage by depositing sand or like friction increasing materials
- B61C15/102—Preventing wheel slippage by depositing sand or like friction increasing materials with sanding equipment of mechanical or fluid type, e.g. by means of steam
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Abstract
The invention provides a sanding device for a locomotive, comprising: the sand spreading device comprises a sand spreading main body, wherein a sand spreading flow passage is constructed in the sand spreading main body; the air inlet cavity is arranged in the sanding main body and is respectively communicated with the sanding flow passage and the locomotive sand box, and a heater is arranged in the air inlet cavity; the first air inlet channel and the second air inlet channel are respectively communicated with the air inlet cavity; the sanding air cavity is communicated with the first air inlet flow channel, a sanding air nozzle is arranged in the sanding air cavity, and the spraying direction of the sanding air nozzle faces to a sand outlet of the sanding flow channel; under the first working state, a normal-pressure sanding air source enters the sanding air cavity, enters the sanding flow channel through the first air inlet flow channel and is stirred, and sand grains are blown out under the combined action of the sanding air nozzles, so that sanding operation is performed; and under a second working state, the normal-pressure air source enters the air inlet cavity through the second air inlet flow channel, and enters the locomotive sand box and the sand spreading flow channel after being heated by the heater, so that sand grains are kept loose and dry.
Description
Technical Field
The invention relates to the technical field of rail equipment, in particular to a sanding device for a locomotive.
Background
The sand spreader is used for spreading sand between the wheel tread and the wheel rail so as to improve the adhesion coefficient between the wheel rail and the locomotive, thereby effectively inhibiting the idle running of the wheel pair, improving the traction performance and effectively ensuring the transportation capacity and the driving safety of the locomotive. The principle of the prior sand spreader adopts two paths, wherein one path stirs sand grains in a cavity of the sand spreader through a sand stirring air nozzle, and the other path blows out the stirred sand grains through a sand blowing air nozzle, thereby realizing sand spreading.
However, the conventional sand blaster still has the following problems. For example, at the moment of shutting down the sand spreader, the sand stirring air nozzle is easily blocked by raised sand grains, so that normal sand spreading is influenced, and the driving safety of a vehicle is seriously influenced. And because the sand stirring air nozzle directly sprays sand to impact the inner cavity, the side wall of the cavity has the risk of being blown through. In addition, the sand grains stored in the cavity can be in a damp or hardened state under the condition of not being used for a long time, so that the sanding effect is influenced, and the driving safety of a vehicle is further influenced.
Disclosure of Invention
In view of the above-mentioned technical problems, the present invention is directed to provide a sanding device for a locomotive, which can prevent impact wear to the side wall of a sanding body and keep sand particles loose and dry, thereby facilitating sanding.
To this end, according to the present invention, there is provided a sanding device for a locomotive, comprising: the sand spreading main body is used for being connected below the locomotive sand box, and a sand spreading flow passage penetrating through the sand spreading main body is constructed in the sand spreading main body; the air inlet cavity is arranged in the sanding main body, the air inlet cavity is respectively communicated with the sanding flow channel and the locomotive sand box, and a heater is arranged in the air inlet cavity; the first air inlet channel is communicated with a normal-pressure sanding air source, and the second air inlet channel is communicated with a normal-pressure air source; the sanding air cavity is arranged in the sanding main body and communicated with the first air inlet flow channel, a sanding air nozzle is arranged in the sanding air cavity, and the spraying direction of the sanding air nozzle faces to a sanding outlet of the sanding flow channel; in a first working state, after the normal-pressure sanding air source enters the sanding air cavity, one part of the air is sprayed out through the sanding nozzle to form a spraying air flow, and the other part of the air enters the air inlet cavity through the first air inlet flow channel and further enters the sanding flow channel and stirs sand grains entering the sanding flow channel, so that the sand grains are blown out from the sand outlet under the combined action of the spraying air flow, and sanding operation is performed; and in a second working state, the normal-pressure sanding air source stops conveying, the heater is started, the normal-pressure air source enters the air inlet cavity through one part of the second air inlet flow channel, and then is divided into two paths after generating heat under the action of the heater, wherein one path enters the locomotive sand box, and the other path enters the sanding flow channel, so that sand grains in the locomotive sand box and the sanding flow channel are permeated, and the sand grains are kept loose and dry.
In one embodiment, the sanding flow passage is configured to comprise a sand inlet passage, a sand storage passage for temporarily storing sand, a sand raising passage and a sand outlet passage which are sequentially communicated, and the sanding flow passage forms an oblique S-shaped passage.
In one embodiment, the sand inlet channel extends in the vertical direction and is communicated with the air inlet cavity.
In one embodiment, the sand storage channel and the sand inlet channel are arranged at an angle of 30-60 degrees.
In one embodiment, a cleaning plug and a detachable cleaning cover are arranged at the joint of the sand storage channel and the sand inlet channel and used for cleaning the sand storage channel and the sand inlet channel.
In one embodiment, the sand outlet channel and the sand inlet channel are arranged at an angle of 30 degrees and extend along the spraying direction of the sanding nozzle, and the sand raising channel and the sand outlet channel are arranged perpendicularly.
In one embodiment, a ventilation plate is arranged in the air inlet cavity, so that a main air cavity and an air outlet cavity are respectively formed on two sides of the ventilation plate,
the main air cavity is communicated with the first air inlet channel and the second air inlet channel respectively, the air outlet cavity is communicated with the sand inlet channel and the connecting pipe mechanism respectively, and the heater is located in the air outlet cavity.
In one embodiment, the first air inlet flow channel is communicated with a normal-pressure sanding air source through a one-way valve, and an adjusting air nozzle for adjusting the air volume of the air outlet cavity is arranged in the first air inlet flow channel.
In one embodiment, the second air inlet channel is communicated with a normal-pressure air source through a through-hole stud bolt, and a normal-pressure air nozzle used for reducing air inlet pressure is arranged in the second air inlet channel.
In one embodiment, a connecting pipe mechanism for communicating the air inlet cavity with the locomotive sand box is arranged at the upper end of the sanding main body
Compared with the prior art, the invention has the advantages that:
according to the sanding device for the locomotive, under the first working state, airflow is formed through the first air inlet flow channel, so that sand grains in the sanding flow channel are blown, and the sand grains are blown out for sanding through the combined action of the sanding air nozzles, so that the sanding efficiency is obviously improved, and the sanding effect is enhanced. This sanding device has effectively avoided the impact wear to the lateral wall of sanding main part through setting up the gas permeable plate, and sanding tuyere, sand outlet way and sand outlet set up to coaxial to effectively avoided the perpendicular impact wear of sanding tuyere to other parts, showing the life who has prolonged the sanding dress. Under the second operating condition, the sanding device can heat the normal pressure air source and permeate into the sand grains in the locomotive sand box and the sanding flow passage, so that the sand grains are kept loose and dry, and the sand grains are effectively prevented from being wetted and hardened. In addition, this sanding device can effectively avoid sanding feng to block up in the course of the work, and the clearance of being convenient for of sanding runner can effectively avoid the large granule impurity in the sand grain to exert an influence to the sanding, further strengthens sanding effect.
Drawings
The invention will now be described with reference to the accompanying drawings.
Fig. 1 schematically shows a structure in which a sanding device for a locomotive according to the present invention is attached below a locomotive sand box.
Fig. 2 shows the structure of the sanding device for a locomotive according to the present invention.
Fig. 3 shows a side view of the sanding device of fig. 2.
Fig. 4 is a sectional view taken along line a-a of fig. 3.
Fig. 5 shows a top view of the sanding device of fig. 2.
In the present application, the drawings are all schematic and are used only for illustrating the principles of the invention and are not drawn to scale.
Detailed Description
The invention is described below with reference to the accompanying drawings.
In the present application, it is to be noted that directional terms or qualifiers "upper end", "lower end", and the like used in the present application are all referred to the attached fig. 1. They are not intended to limit the absolute positions of the parts involved, but may vary from case to case. In addition, the vertical direction is the vertical direction of fig. 1.
Fig. 1 shows the structure of a sanding device 100 for a locomotive according to the present invention. The sanding device 100 is adapted to be attached under a locomotive sand box 200. As shown in fig. 1, the sanding device 100 includes a sanding body 10, and in one embodiment, the sanding body 10 is configured to be substantially triangular. An installation plate 11 is fixedly connected to the upper end of the sanding main body 10. A plurality of mounting holes are formed in the mounting plate 11, and bolt and nut fixing members are installed in the mounting holes, thereby fixedly attaching the sanding device 100 to the underside of the locomotive sand box 200.
As shown in fig. 2, a connection pipe mechanism 70 is provided at an upper end of the sanding body 10, and the connection pipe mechanism 70 is used to communicate with a locomotive sand box 200. The connection pipe mechanism 70 includes a first constant air pipe 71 and a second constant air pipe 72 connected to an upper end of the first constant air pipe, thereby forming a constant air duct 73 (see fig. 4). A bypass cover 74 is provided at the upper end of the second normal air duct 72. The connecting pipe mechanism 70 extends into the locomotive sand box 200, so that the constant air duct 73 is communicated with the locomotive sand box 200. In the working process, the bypass cover 74 extends into sand in the sand box, and the inside of the bypass cover 74 is in an inverted U shape, so that sand can be effectively prevented from entering the normal air duct 73, and normal air can be discharged normally.
According to the present invention, the sanding passage 20 is provided inside the sanding body 10, and the sanding passage 20 penetrates the sanding body 10. As shown in fig. 3 and 4, the sanding flow passage 20 is configured to include a sand inlet passage 22, a sand storage passage 23 for temporarily storing sand, a sand raising passage 24, and a sand outlet passage 25, which are sequentially communicated. The end of the sand outlet channel 25 is connected with a sand outlet 21. The sanding channel 20 is configured as an oblique S-shaped channel. The sand inlet passage 22 is provided to extend vertically for sand to enter the sanding passage 20. The inlet of the sand storage channel 23 is communicated with the outlet of the sand inlet channel 22, and the angle between the sand storage channel 23 and the sand inlet channel 22 is set to be within the range of 30-60 degrees. Preferably, the angle between the sand storage channel 23 and the sand inlet channel 22 is set to 45 °. The sand outlet channel 25 is arranged in the range of 20-40 to the sand inlet channel 22, preferably the angle between the sand outlet channel 25 and the sand inlet channel 22 is 30. The sand raising channel 24 is arranged perpendicular to the sand outlet channel 25. Therefore, the sand inlet passage 22, the sand storage passage 23, the sand pumping passage 24 and the sand outlet passage 25 are sequentially communicated to form the inclined S-shaped sand spraying passage 20. Sand in the locomotive sand box 200 enters the sanding flow passage through the sand inlet passage 22, and then sequentially passes through the sand storage passage 23, the sand raising passage 24 and the sand outlet passage 25, and is discharged through the sand outlet 21 for sanding.
In the present embodiment, a sand discharge port is provided at a connection portion of the sanding main body 10 between the sand storage channel 23 and the sand inlet channel 22, and a cleaning plug 26 and a detachable cleaning cover 27 are provided at the sand discharge port. In the operating state, the cleaning cover 27 is closed and sealed by the cleaning plug 26. The cleaning cover 27 and the cleaning plug 26 are detached according to actual requirements to clean the sand inlet channel 22 and the sand storage channel 23, so that impurities can be removed periodically. When large-particle impurities are mixed in sand grains and are detained and influence the condition of sanding, the cleaning cover 27 and the cleaning plug 26 are opened, so that the large-particle impurities can be cleaned and flow out along the sand discharge port, and the cleaning of the sand storage channel 23 and the sand inlet channel 22 can be completed.
As shown in fig. 3 and 4, an air inlet chamber 30 is further provided inside the sanding body 10. A ventilation plate 31 is arranged in the air inlet cavity 30, so that the air inlet cavity 30 is divided into a main air cavity 32 and an air outlet cavity 33, and the main air cavity 32 and the air outlet cavity 33 are respectively arranged at two sides of the ventilation plate 31. In one embodiment, the gas permeable plate 31 is made of copper or stainless steel powder metallurgy. The air outlet cavity 33 is communicated with the sand inlet channel 22 through a lower air outlet channel 331, and the air outlet cavity 33 is communicated with the constant air channel 73 of the connecting pipe mechanism 70 through an upper air outlet channel 332. The function of the inlet chamber 30 is described below.
The sanding device 100 for a locomotive according to the present invention further includes a heater 40 disposed within the sanding body 10. The heating part of the heater 40 extends into the air outlet cavity 33, and can heat the air entering the air outlet cavity 33.
In this embodiment, the intake cavity 30 is provided with an air cavity cleaning plug 34. In the operating state, the air chamber cleaning plug 34 is closed to form a seal with the air inlet chamber 30. The air chamber cleaning plug 34 can be removed according to actual needs to clean the air inlet chamber 30, so that sundries can be removed periodically.
According to the present invention, a first air intake duct 50 and a second air intake duct 60 are further provided inside the sanding body 10. As shown in fig. 2 and 5, the first air inlet duct 50 and the second air inlet duct 60 are respectively communicated with the main air chamber 32 of the air inlet chamber body 30. In one embodiment, the first inlet duct 50 and the second inlet duct 60 are oppositely disposed.
The first air inlet channel 50 is communicated with a normal-pressure sanding air source. In one embodiment, the first inlet duct 50 is in communication with an atmospheric sanding gas source via a one-way valve 51. A control tuyere 52 for controlling the air volume of the air outlet chamber 33 is provided in the first air intake duct 60. In the first working state, the normal pressure sanding gas source enters the main air cavity 32 of the air inlet cavity 30 through the first air inlet flow channel 50, enters the air outlet cavity 33 through the air permeable plate 31, further enters the sanding flow channel 20 to stir sand grains entering the sanding flow channel 20, and blows the sand grains out of the sanding outlet 21, so that sanding operation is performed. In this operating state, the ventilation plate 31 can prevent sand or dust from entering the main plenum 32, and the gas in the main plenum 32 is leaked out through the ventilation plate 31 to form a softer gas flow, thereby avoiding impact wear on the side wall of the sanding main body 10 and significantly prolonging the service life of the sanding device 100.
The second air inlet channel 60 is communicated with a normal pressure air source. In one embodiment, the second inlet duct 60 is in communication with a source of atmospheric air via through-hole studs 61. A constant air nozzle 62 for reducing the pressure of the intake air is provided in the second intake air flow passage 60. In the second working state, the normal pressure sanding air source stops conveying, the heater 40 is started, the normal pressure air source enters the main air cavity 32 of the air inlet cavity 30 through the second air inlet flow channel 60, then enters the air outlet cavity 33 through the air permeable plate 31, generates heat under the action of the heater 40 and then is divided into two paths, one path enters the locomotive sand box 200 through the connecting pipe mechanism 70, and the other path is converged with the sanding flow channel 20, so that sand grains in the locomotive sand box 200 and the sanding flow channel 20 are permeated, and the sand grains are kept loose and dry.
In this embodiment, the atmospheric pressure of the atmospheric sanding gas source is greater than the atmospheric pressure of the atmospheric pressure gas source.
According to the present invention, a sanding air chamber 80 is also provided in the sanding body 10. As shown in fig. 4, the sand blasting chamber 80 is provided at the connection of the sand outlet 25 and the sand throwing channel 24. The sanding air chamber 80 is in the extending direction of the sand outlet 25 and is opposite to the sand outlet 21. The sanding plenum 80 communicates with the first air inlet channel 50. A sanding tuyere 81 is provided in the sanding tuyere chamber 80 so as to communicate with the sand outlet channel 25 through the sanding tuyere 81. The spraying direction of the sanding tuyere 81 is towards the sand outlet 21, so that the sanding tuyere 81 can blow sand in the sand lifting channel 24, and the sand passes through the sand outlet 24 and is discharged through the sand outlet 21 to complete sanding. Thus, the sand nozzle 81, the sand outlet 25, and the sand outlet 21 are coaxial. Therefore, the vertical impact abrasion of the sanding tuyere 81 on other parts of the sanding device 100 is effectively avoided, and the service life of the sanding device 100 is further prolonged.
In this embodiment, the sanding plenum 80 is provided with a tuyere clearance plug 82. In the operating state, the tuyere clearance block 82 is closed to form a seal for the sanding air chamber 80. According to actual needs, the tuyere cleaning plug 82 in the sanding air cavity 80 can be cleaned through the tuyere cleaning plug 82 under the condition that the sanding device 100 is not detached.
The operation of the sanding device 100 for locomotives according to the present invention is briefly described below. First, sand in the locomotive sand box 200 enters the sanding flow channel 20 through the sand inlet channel 22 and is temporarily stored in the sand storage channel 23. After that, the sanding device 100 is started, and after the external normal pressure sanding air source enters the sanding air chamber 80 through the one-way valve 51, a part of the external normal pressure sanding air source is ejected through the sanding air nozzle 81 to form an ejection air flow, and a part of the external normal pressure sanding air source enters the first air inlet flow channel 50 through the adjusting air nozzle 52. The adjusting blast nozzle 52 can adjust the flow and pressure of the normal-pressure sanding air source entering the first air inlet duct 50 according to actual conditions. The normal pressure sanding air source entering the first air inlet duct 50 enters the main air chamber 32 of the air inlet chamber 30, and then enters the air outlet chamber 33 through the air permeable plate 31. Then, the sanding air source entering the air outlet cavity 33 is divided into two paths, one path enters the normal air channel 73 of the connecting pipe mechanism 70 through the upper air outlet channel 332 and enters the inside of the locomotive sand box 200 through the normal air channel 73. The other path enters the sand inlet channel 22 through the lower air outlet channel 331 and stirs the sand in the sand storage channel 23, so as to drive the sand to turn into the poplar channel 24, and further the sand passes through the sand outlet channel 25 under the combined action of the air jet formed by the sand spreading air source and the sand spreading air nozzle 81 and is blown out from the sand outlet 21, thereby performing the sand spreading operation. At this time, the sanding device 100 is in the first operating state. In this operating state, the air flow leaking from the air permeable plate 31 and the air flow formed by the sanding tuyere 81 are restricted with each other, so that the internal pressure of the sanding device 100 tends to be balanced, thereby preventing the sand box from being vacuumed due to an excessively large air volume of the sanding tuyere 81, and further preventing the normal operation of sanding work from being affected.
When the normal pressure sanding gas source stops delivering, the heater 40 is activated. An external normal-pressure air source enters the second air inlet flow channel 60 through the through-hole stud 61 and the normal air nozzle 62, and then enters the main air cavity 32 of the air inlet cavity 30. After the atmospheric air source passes through the atmospheric air nozzle 62, the pressure is reduced to a level that is insufficient to blow the sand particles into the main air chamber 32. Then, the airflow entering the main air chamber 32 passes through the ventilation plate 31 and enters the air outlet chamber 33, and the heater 40 in the air outlet chamber 33 heats the airflow to generate heat. Then, the heated air flow in the sealed cavity 33 is divided into two paths, one path enters the normal air channel 73 of the connecting pipe mechanism 70 through the upper air outlet channel 332 and enters the inside of the locomotive sand box 200 through the normal air channel 73, and the other path enters the sanding flow channel 20 through the lower air outlet channel 331. Thus, the heated air flow penetrates into the sand grains in the locomotive sand box 200 and the sanding flow passage 20, respectively, so that the sand grains are kept loose and dry, thereby preventing the sand grains from being hardened by moisture. At this time, the sanding device 100 is in the second operating state. In this operation state, a part of the air flow entering the second air intake duct 60 enters the sanding air chamber 80 through the first air intake duct 50 and is discharged through the sanding air nozzle 81, so that sand can be prevented from entering the sanding air nozzle 81 to avoid clogging, and the heated air flow entering the sanding duct 20 and the air flow discharged through the sanding air nozzle 81 are collected in the sand outlet 25 and blown out through the sand outlet 21.
The sanding device 100 for locomotives according to the present invention can be used as a sander for various railway vehicles, and has the advantages of reliable performance, simple cleaning and maintenance, and high sanding efficiency.
The sanding device 100 for the locomotive according to the present invention has two working states, and in the first working state, the sanding device 100 can form an air flow through the first air inlet passage 50, so as to blow sand grains in the sanding passage 20, and blow the sand grains out through the sanding tuyere 81 for sanding, which significantly improves sanding efficiency and enhances sanding effect. This sanding device 100 has effectively avoided the impact wear to the lateral wall of sanding main part 10 through setting up gas permeable plate 31, and sanding tuyere 81, sand outlet 25 and sand outlet 21 set up to be coaxial to effectively avoided the perpendicular impact wear of sanding tuyere 81 to other parts, showing the life who has prolonged sanding dress 100. In the second working state, the sanding device 100 can heat the normal pressure air source and permeate the sand grains in the locomotive sand box 200 and the sanding flow passage 20, so that the sand grains are kept loose and dry, and the sand grains are effectively prevented from being wetted and hardened. In addition, this sanding device 100 can effectively avoid sanding feng to block up in the course of the work, and sanding runner 20 is convenient for clear up, can effectively avoid the large granule impurity in the sand grain to produce the influence to the sanding, further strengthens sanding effect.
Finally, it should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and do not limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing examples, or that equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A sanding device for a locomotive comprising:
the sanding device comprises a sanding main body (10) used for being connected below a locomotive sand box, wherein a sanding flow channel (20) penetrating through the sanding main body is formed inside the sanding main body;
the air inlet cavity (30) is arranged inside the sanding main body, the air inlet cavity is respectively communicated with the sanding flow channel and the locomotive sand box, and a heater (40) is arranged in the air inlet cavity;
the first air inlet runner (50) and the second air inlet runner (60) are respectively communicated with the air inlet cavity, the first air inlet runner is communicated with a normal-pressure sanding air source, and the second air inlet runner is communicated with a normal-pressure air source; and
the sanding air cavity (80) is arranged inside the sanding main body and communicated with the first air inlet flow channel, a sanding air nozzle (81) is arranged in the sanding air cavity, and the spraying direction of the sanding air nozzle faces to a sanding outlet of the sanding flow channel;
in a first working state, after the normal-pressure sanding air source enters the sanding air cavity, one part of the air is sprayed out through the sanding nozzle to form a spraying air flow, and the other part of the air enters the air inlet cavity through the first air inlet flow channel and further enters the sanding flow channel and stirs sand grains entering the sanding flow channel, so that the sand grains are blown out from the sand outlet under the combined action of the spraying air flow, and sanding operation is performed;
and in a second working state, the normal-pressure sanding air source stops conveying, the heater is started, the normal-pressure air source enters the air inlet cavity through one part of the second air inlet flow channel, and then is divided into two paths after generating heat under the action of the heater, wherein one path enters the locomotive sand box, and the other path enters the sanding flow channel, so that sand grains in the locomotive sand box and the sanding flow channel are permeated, and the sand grains are kept loose and dry.
2. A sanding device according to claim 1, characterized in that the sanding channel is configured to comprise a sand inlet channel (22), a sand storage channel (23) for temporary storage of sand, a sand lifting channel (24) and a sand outlet channel (25) communicating in this order and forming an inclined S-shaped channel.
3. A sanding device according to claim 2, characterized in that the sand inlet channel extends in a vertical direction and communicates with the air inlet chamber.
4. A sanding device according to claim 2 or 3, characterized in that the sand storage channel is provided at an angle of 30 ° -60 ° to the sand inlet channel.
5. A sanding device according to claim 4, characterized in that a cleaning plug (26) and a removable cleaning cover (27) are provided at the connection of the sand storage channel and the sand inlet channel for cleaning the sand storage channel and the sand inlet channel.
6. A sanding device according to claim 2 or 3, characterized in that the sand outlet channel is arranged at 30 ° to the sand inlet channel and extends in the direction of the jet of the sanding nozzle, the sand slinger being arranged perpendicular to the sand outlet channel.
7. A sanding device according to any one of claims 1 to 3, characterized in that a ventilation plate (31) is provided inside the air inlet chamber, so that a total air chamber (32) and an air outlet chamber (33) are formed on either side of the ventilation plate,
the main air cavity is communicated with the first air inlet channel and the second air inlet channel respectively, the air outlet cavity is communicated with the sand inlet channel and the connecting pipe mechanism respectively, and the heater is located in the air outlet cavity.
8. A sanding device according to claim 1, characterized in that the first air inlet channel is connected to a source of normal pressure sanding gas via a one-way valve (51), and in that in the first air inlet channel there is provided a regulating tuyere (52) for regulating the air volume of the air outlet chamber.
9. A sanding device according to claim 1, characterized in that the second air inlet channel is connected to a source of atmospheric air by means of through-hole studs (61), and that a normal air nozzle (62) for reducing the pressure of the inlet air is arranged in the second air inlet channel.
10. A sanding device according to claim 1, characterized in that a connecting tube means (70) for connecting the air inlet chamber with the locomotive sand box is provided at the upper end of the sanding body.
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| CN201911381157.2A CN111216744B (en) | 2019-12-27 | 2019-12-27 | Sanding device for locomotive |
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| CN107406084A (en) * | 2015-02-26 | 2017-11-28 | 克诺尔有限公司 | Pneumatic conveyor and measuring equipment and sand spraying device with the jet pump for flowable materials |
| CN206664586U (en) * | 2017-03-02 | 2017-11-24 | 北京铁泰科技开发有限公司 | A kind of use for electric locomotive sander |
| CN207173602U (en) * | 2017-08-21 | 2018-04-03 | 中车株洲电力机车有限公司 | A kind of rail vehicle sander, stucco system and rail traffic vehicles |
| DE202017107772U1 (en) * | 2017-12-20 | 2019-03-25 | Hanning & Kahl Gmbh & Co. Kg | Spreading agent discharge device for rail vehicles |
| CN109017829A (en) * | 2018-07-26 | 2018-12-18 | 株洲电力机车电机修造有限公司 | A kind of locomotive sand sprayer |
| CN208997438U (en) * | 2018-11-06 | 2019-06-18 | 天津金吉利自动化技术有限公司 | A kind of solenoid valve box |
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Address after: 412001 Hunan Province, Zhuzhou Shifeng District Tian Xin North Gate Patentee after: HUNAN LINCE TRACK EQUIPMENT Co.,Ltd. Patentee after: Hunan Liancheng Electric Technology Co., Ltd Address before: 412001 Hunan Province, Zhuzhou Shifeng District Tian Xin North Gate Patentee before: HUNAN LINCE TRACK EQUIPMENT Co.,Ltd. Patentee before: ZHUZHOU POWER ENGINE AND MOTOR BUILD AND REPAIR Co.,Ltd. |