Air supply pressure regulating valve for railway hopper car unloading system and hopper car

Abstract

The utility model discloses an air supply pressure regulating valve for a railway hopper car unloading system and a hopper car, and relates to the field of railway wagons, the air supply pressure regulating valve comprises an air inlet end flange arranged at the inlet end of a valve body, a bolt hole center connecting line of the air inlet end flange is arranged along the vertical direction, and a first dust filter screen is arranged in the air inlet end flange; the air inlet end flange is used for being connected with the air outlet end of the dust collector. The air outlet end flange is arranged at the outlet end of the valve body, the center connecting line of bolt holes of the air outlet end flange is arranged in the horizontal direction, and a second dust filtering net is arranged in the air outlet end flange; the sealing rings are respectively arranged on the end surfaces of the air inlet end flange and the air outlet end flange; the air supply pressure regulating valve does not need to adopt a flange branch pipe for transition, the number of connectors connected at the position is reduced, and the leakage probability is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of railway freight cars, and more specifically relates to an air supply pressure regulating valve for a railway hopper car unloading system and the hopper car. Background Art

[0002] At present, the compressed air source used in the wind control system of railway hopper cars is supplied by the locomotive through the train main pipe. In order to prevent the air source of the unloading wind control system from not flowing back to the train main pipe, causing the train to naturally relax under braking conditions, and to avoid the unloading wind control system from inflating too quickly, which will cause the vehicle braking system train main pipe to quickly decompress, causing the train to suddenly brake and slow down during normal driving, posing a great hidden danger to driving safety, the air supply pressure regulating valve with check valve, pressure limiting and current limiting functions must be installed on the air inlet pipe of the hopper car unloading wind control system. Figures 1 to 2 As shown, the existing air supply pressure regulating valve has the following problems in use:

[0003] (1) The existing air supply pressure regulating valve 1' is installed vertically, and its air inlet flange is horizontal, while the air outlet connection flange of the DN15 combined dust collector that controls the opening and closing of the air source of the entire system is vertical. In order to ensure the normal assembly and connection of the two, a steel pipe 2' with a flange joint body welded at both ends needs to be installed between the two for transition connection. This connection method has two flange interfaces between the air supply pressure regulating valve and the combined dust collector, which is one more flange interface than the direct connection between the two. Since each flange interface is a potential leakage point, the use of flange pipe transition connection has the problem of too many interfaces.

[0004] (2) The dust filter core 3' of the existing air supply pressure regulating valve is a cylindrical mesh hollow structure, and the matching mounting hole is also a cylindrical hole. When the dust filter core is used for a long time, mechanical impurities, dust and oil will remain on the dust filter core on the air inlet side due to the filtering effect. Since the dust filter core and the mounting hole are not designed with a rotation direction limit, when the vehicle is in long-term operation, a certain vibration will be generated. In addition, the impact of the pressurized air at the air inlet end causes the existing dust filter core to rotate at a certain angle. When the rotation angle accumulates to more than 90 degrees, the filter surface originally attached with mechanical impurities, dust and oil will rotate to the vertical center close to the valve body. At this time, due to the vibration of the vehicle and the blowing effect of the wind source of the air inlet, the mechanical impurities, dust and oil at this place will enter the valve body with the pressurized air. The harmful substances will corrode the pipe wall and the valve body, accelerate the wear and rust of the moving parts, and even pad the valve port and block the air path. This not only affects the normal use of the ballast unloading air control system, but also shortens the maintenance cycle of each control valve of the air control system and increases the maintenance cost.

[0005] (3) The flange end face of the air outlet of the DN15 combined dust collector is flat, and the flange end face of the air inlet end of the existing air supply pressure regulating valve is also flat. The direct connection between the two cannot be equipped with a sealing ring, which will cause leakage of pressurized air. Utility Model Content

[0006] The purpose of the utility model is to address the deficiencies in the existing technology and to provide an air supply pressure regulating valve and a hopper car for a railway hopper car unloading system. The air supply pressure regulating valve does not require a flange branch pipe for transition, thereby reducing the number of interfaces connected thereto and lowering the probability of leakage.

[0007] In order to achieve the above-mentioned object, the utility model provides an air supply pressure regulating valve for a railway hopper car unloading system, comprising:

[0008] An air inlet flange is provided on the inlet end of the valve body, the center line of the bolt holes of the air inlet flange is arranged in the vertical direction, a first dust filter is provided in the air inlet flange, and the air inlet flange is used to connect to the air outlet end of the dust collector;

[0009] An air outlet flange is provided on the outlet end of the valve body, a center line connecting the bolt holes of the air outlet flange is arranged in a horizontal direction, and a second dust filter is provided in the air outlet flange;

[0010] Sealing rings are respectively arranged on the end faces of the air inlet end flange and the air outlet end flange.

[0011] Optionally, mounting grooves are respectively provided on the end surfaces of the air inlet end flange and the air outlet end flange, and the sealing ring is embedded in the mounting grooves.

[0012] Optionally, the sealing ring is an E-shaped sealing ring.

[0013] Optionally, a first groove is provided on the outer periphery of the pipe mouth of the air inlet end flange, a first flange is provided on the outer periphery of the first dust filter, the first flange is embedded in the first groove, and the middle part of the first dust filter protrudes toward the inner side of the air inlet end flange.

[0014] Optionally, the first flange does not protrude from the end surface of the air inlet end flange.

[0015] Optionally, the middle cross-section of the first dust filter is U-shaped, and the central axis of the first dust filter is parallel to the air inlet direction of the valve body.

[0016] Optionally, a second groove is provided on the outer periphery of the pipe mouth of the air outlet flange, a second flange is provided on the outer periphery of the second dust filter, the second flange is embedded in the second groove, and the middle part of the second dust filter protrudes toward the inner side of the air outlet flange.

[0017] Optionally, the second flange does not protrude from the end surface of the air outlet flange.

[0018] Optionally, the middle cross-section of the second dust filter is U-shaped, and the central axis of the second dust filter is parallel to the air outlet direction of the valve body.

[0019] The utility model also provides a hopper car, comprising the above-mentioned air supply pressure regulating valve for the railway hopper car unloading system.

[0020] The utility model provides an air supply pressure regulating valve for a railway hopper car unloading system and a hopper car, which has the following beneficial effects:

[0021] 1. After installation, the air supply pressure regulating valve eliminates one connecting branch pipe and reduces the number of flange interfaces, thus reducing manufacturing and repair costs and the probability of air leakage in the unloading system. It also frees up space at the side door, greatly facilitating observation and operation by operators in the control room.

[0022] 2. The air supply pressure regulating valve has improved its filtering structure, which avoids the problem that mechanical impurities, dust and oil on the dust filter of the existing air supply pressure regulating valve enter the valve body along with the pressurized air during long-term use due to vehicle operation vibration and the impact of the pressurized air at the air inlet end, affecting the quality of the pressurized air of the entire system and the stability of the system;

[0023] 3. The overall structural design of the air supply pressure regulating valve is reasonable and the assembly process is simple. It only requires the removal of the connecting branch pipe between the dust collector and the length of the branch pipe at the air outlet end. It can be installed on existing vehicles, and the modification cost is effectively controlled.

[0024] Other features and advantages of the present invention will be described in detail in the subsequent detailed description of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0026] Figure 1 The figure shows the installation position of the existing air supply pressure regulating valve.

[0027] Figure 2 A cross-sectional view of the internal structure of an existing air supply pressure regulating valve is shown.

[0028] Figure 3 A schematic diagram of the connection between an air supply pressure regulating valve and a dust collector for a railway hopper car unloading system according to an embodiment of the present utility model is shown.

[0029] Figure 4 The external structure diagram of an air supply pressure regulating valve for a railway hopper car unloading system according to one embodiment of the utility model is shown.

[0030] Figure 5 The invention shows an internal cross-sectional view of an air supply pressure regulating valve for a railway hopper car unloading system according to an embodiment of the present invention.

[0031] Figure 6 A schematic diagram showing the positions of the first groove and the second groove according to an embodiment of the present utility model is shown.

[0032] Figures 1 to 2 Description of the reference numerals:

[0033] 1', air supply pressure regulating valve; 2', steel pipe; 3', dust filter element.

[0034] Figures 3 to 6 Description of the reference numerals:

[0035] 1. Valve body; 2. Air inlet flange; 3. First dust filter; 4. Dust collector; 5. Air outlet flange; 6. Second dust filter; 7. Sealing ring; 8. Mounting slot; 9. First groove; 10. First flange; 11. Second groove; 12. Second flange. DETAILED DESCRIPTION

[0036] The following describes preferred embodiments of the present invention in greater detail. Although preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0037] The utility model provides an air supply pressure regulating valve for a railway hopper car unloading system, comprising:

[0038] The air inlet flange is arranged on the inlet end of the valve body, the center line of the bolt holes of the air inlet flange is arranged in the vertical direction, a first dust filter is arranged in the air inlet flange, and the air inlet flange is used to connect to the air outlet end of the dust collector;

[0039] The air outlet flange is arranged on the outlet end of the valve body, the center line of the bolt holes of the air outlet flange is arranged in the horizontal direction, and a second dust filter is arranged in the air outlet flange;

[0040] The sealing rings are respectively arranged on the end faces of the air inlet flange and the air outlet flange.

[0041] Specifically, the air supply pressure regulating valve sets the bolt holes of the air inlet end flange in the vertical direction, so that it can be connected to the dust collector without adding a transition branch pipe for conversion, eliminating a branch pipe and a flange; in addition, dust filters are respectively set on the air inlet end flange and the air outlet end flange, thus achieving double filtration and improving the filtering effect.

[0042] Optionally, mounting grooves are respectively provided on the end faces of the air inlet end flange and the air outlet end flange, and the sealing rings are embedded in the mounting grooves.

[0043] Optionally, the sealing ring is an E-shaped sealing ring.

[0044] Specifically, sealing ring installation grooves are processed on the air inlet flange and the air outlet flange respectively. The installation grooves can accommodate sealing rings of φ26mm×φ38mm×5mm, and use E-type sealing rings DN15, which can reduce design and procurement costs.

[0045] Optionally, a first groove is provided on the outer periphery of the pipe mouth of the air inlet end flange, a first flange is provided on the outer periphery of the first dust filter, the first flange is embedded in the first groove, and the middle part of the first dust filter protrudes toward the inner side of the air inlet end flange.

[0046] Optionally, the first flange does not protrude from the end surface of the air inlet end flange.

[0047] Specifically, a first groove is arranged along the circumference of the air inlet end flange, and the first groove is connected to the pipe mouth, so that a sunken platform is formed on the outer periphery of the pipe mouth, and the first flange on the outer periphery of the first dust filter is placed in the sunken platform, so that the first dust filter can be clamped on the air inlet end flange, and the first flange will not protrude from the end face of the air inlet end flange after installation, ensuring that the flange does not affect the installation between the two parts when connected.

[0048] Optionally, the middle cross-section of the first dust filter is U-shaped, and the central axis of the first dust filter is parallel to the air inlet direction of the valve body.

[0049] Specifically, in addition to setting a first flange on the outer periphery of the first dust filter, the middle cross-section of the first dust filter is set to be U-shaped, so that the first dust filter is deformed toward the inside of the air inlet end flange. This not only increases the filtering area, but also no matter how the first dust filter rotates on the first groove, the windward surface of the first dust filter will not change, thereby preventing the filtered dust from falling into the inside of the valve body.

[0050] Optionally, a second groove is provided on the outer periphery of the pipe mouth of the air outlet flange, a second flange is provided on the outer periphery of the second dust filter, the second flange is embedded in the second groove, and the middle part of the second dust filter protrudes toward the inner side of the air outlet flange.

[0051] Optionally, the second flange does not protrude from the end surface of the air outlet flange.

[0052] Optionally, the middle cross-section of the second dust filter is U-shaped, and the central axis of the second dust filter is parallel to the air outlet direction of the valve body.

[0053] Specifically, the second groove on the air outlet flange and the second flange of the second dust filter correspond to the setting structure on the air inlet flange, and their working principles are the same, except that the protruding direction of the second dust filter is exactly opposite to the air outlet direction. With the mutual cooperation of the first dust filter and the second dust filter, the incoming air of the dust collector is filtered twice to ensure the air outlet quality of the pressure regulating valve.

[0054] The utility model also provides a hopper car, comprising the above-mentioned air supply pressure regulating valve for the railway hopper car unloading system.

[0055] Specifically, after the air supply pressure regulating valve is installed, the installation of the conversion connecting branch pipe is eliminated, the occupied space at the side door is released, and it is greatly convenient for the operator to observe and operate in the control room.

[0056] Example

[0057] like Figures 3 to 6 As shown, the utility model provides an air supply pressure regulating valve for a railway hopper car unloading system, comprising:

[0058] The air inlet flange 2 is provided on the inlet end of the valve body 1, and the center line of the bolt holes of the air inlet flange 2 is arranged in the vertical direction. A first dust filter 3 is provided in the air inlet flange 2, and the air inlet flange 2 is used to connect to the air outlet end of the dust collector 4;

[0059] The air outlet flange 5 is provided on the outlet end of the valve body 1, and the center line of the bolt holes of the air outlet flange 5 is arranged in the horizontal direction. A second dust filter 6 is provided in the air outlet flange 5;

[0060] The sealing rings 7 are respectively arranged on the end faces of the air inlet flange 2 and the air outlet flange 5 .

[0061] In this embodiment, mounting grooves 8 are respectively formed on the end surfaces of the air inlet flange 2 and the air outlet flange 5 , and the sealing rings are embedded in the mounting grooves 8 .

[0062] In this embodiment, the sealing ring 7 is an E-shaped sealing ring.

[0063] In this embodiment, a first groove 9 is provided on the outer periphery of the pipe mouth of the air inlet end flange 2, and a first flange 10 is provided on the outer periphery of the first dust filter 3. The first flange 10 is embedded in the first groove 9, and the middle part of the first dust filter 3 protrudes toward the inner side of the air inlet end flange 2.

[0064] In this embodiment, the first flange 10 does not protrude from the end surface of the air inlet end flange 2 .

[0065] In this embodiment, the middle section of the first dust filter 3 is U-shaped, and the central axis of the first dust filter 3 is parallel to the air inlet direction of the valve body 1 .

[0066] In this embodiment, a second groove 11 is provided on the outer periphery of the pipe mouth of the air outlet flange 5, and a second flange 12 is provided on the outer periphery of the second dust filter 6. The second flange 12 is embedded in the second groove 11, and the middle part of the second dust filter 6 protrudes toward the inner side of the air outlet flange 5.

[0067] In this embodiment, the second flange 12 does not protrude from the end surface of the air outlet flange 5 .

[0068] In this embodiment, the middle section of the second dust filter 6 is U-shaped, and the central axis of the second dust filter 6 is parallel to the air outlet direction of the valve body 1 .

[0069] The utility model also provides a hopper car, comprising the above-mentioned air supply pressure regulating valve for the railway hopper car unloading system.

[0070] In summary, the air supply pressure regulating valve is directly connected to the dust collector 4 through the air inlet end flange 2, without the need to add a conversion branch pipe, and a sealing ring 7 is respectively provided on the air inlet end flange 2 and the air outlet end flange 5, which can improve the connection sealing; a first dust filter 3 and a second dust filter 6 are respectively provided at the inlet end and the outlet end of the valve body 1, and the dust filter is set into a U shape. No matter how the dust filter is rotated, the filtered dust will not fall into the valve body 1.

[0071] While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. An air supply pressure regulating valve for a railway hopper car unloading system, characterized in that: include: An air inlet flange is arranged on the inlet end of the valve body, the center line of the bolt holes of the air inlet flange is arranged in the vertical direction, a first dust filter is arranged in the air inlet flange, and the air inlet flange is used to connect with the air outlet end of the dust collector; An air outlet flange is arranged on the outlet end of the valve body, a center line of bolt holes of the air outlet flange is arranged in a horizontal direction, and a second dust filter is arranged in the air outlet flange; The sealing rings are respectively arranged on the end faces of the air inlet end flange and the air outlet end flange.

2. The air supply pressure regulating valve for the railway hopper car unloading system according to claim 1 is characterized in that: The end surfaces of the air inlet end flange and the air outlet end flange are respectively provided with mounting grooves, and the sealing ring is embedded in the mounting grooves.

3. The air supply pressure regulating valve for the railway hopper car unloading system according to claim 1 is characterized in that: The sealing ring is an E-shaped sealing ring.

4. The air supply pressure regulating valve for the railway hopper car unloading system according to claim 1 is characterized in that: A first groove is arranged on the outer periphery of the pipe opening of the air inlet end flange, a first flange is arranged on the outer periphery of the first dust filter net, the first flange is embedded in the first groove, and the middle part of the first dust filter net protrudes toward the inner side of the air inlet end flange.

5. The air supply pressure regulating valve for the railway hopper car unloading system according to claim 4 is characterized in that: The first flange does not protrude from the end surface of the air inlet end flange.

6. The air supply pressure regulating valve for the railway hopper car unloading system according to claim 4, characterized in that: The middle section of the first dust filter is U-shaped, and the central axis of the first dust filter is parallel to the air inlet direction of the valve body.

7. The air supply pressure regulating valve for the railway hopper car unloading system according to claim 1, characterized in that: A second groove is arranged on the outer periphery of the pipe opening of the air outlet flange, a second flange is arranged on the outer periphery of the second dust filter, the second flange is embedded in the second groove, and the middle part of the second dust filter protrudes toward the inner side of the air outlet flange.

8. The air supply pressure regulating valve for the railway hopper car unloading system according to claim 7, characterized in that: The second flange does not protrude from the end surface of the air outlet flange.

9. The air supply pressure regulating valve for the railway hopper car unloading system according to claim 7, characterized in that: The middle section of the second dust filter is U-shaped, and the central axis of the second dust filter is parallel to the air outlet direction of the valve body.

10. A hopper car, characterized in that: It comprises an air supply pressure regulating valve for a railway hopper car unloading system according to any one of claims 1 to 9.

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