Split type sanding valve

Abstract

The utility model relates to a split type sanding valve which comprises a sanding valve body and a sanding valve plate, the sanding valve body comprises an adjusting part and a fixing part, and the upper end of the fixing part is connected with the adjusting part and located in a sand box; the fixing part is provided with a fixing bolt and a fixing screw hole, the fixing part is connected with the adjusting part through the fixing bolt, the lower end of the fixing part is embedded in the upper end of the sanding valve plate, the lower end of the sanding valve plate is provided with a conversion seat, the conversion seat is provided with a connecting bolt, and the connecting bolt penetrates through the conversion seat, the sanding valve plate and the fixing part to be connected with the sand box. The conversion seat and the sanding valve plate are both provided with sanding channels communicated with the fixing part, and the sanding valve body and the sanding valve plate are provided with communicated blowing channels; the sanding valve body is of a split type structure, the fixing part and the adjusting part are connected through the bolt, the valve body can be minimized, and the requirement of a sand box sanding connector without stopping a machine is met.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transportation, in particular to a split sand spreading valve. Background Art

[0002] Rail transit sand spreading devices are designed to increase the adhesion coefficient between the wheel and rail, thereby reducing the risk of rolling stock slippage. Currently, mechanically locked sand spreading valves are rectangular and large in size, making them unsuitable for all sandbox sand spreading valve mounting openings. To address the smaller mounting openings of sandbox sand spreading valves on some domestic locomotives, a new type of sand spreading valve with a circular body and a sand spreading volume adjustment function was developed to minimize the valve body and meet the requirements for the sand spreading valve's air path. This allows for precise control of the sand spreading amount. Utility Model Content

[0003] The utility model provides a split sand spreading valve which adopts a split structure and can minimize the valve body to meet the requirements of sand spreading interfaces of sand boxes of different locomotives.

[0004] In order to solve the problems in the above background technology, the present invention is implemented through the following technical solutions:

[0005] A split sand-sprinkling valve comprises a sand-sprinkling valve body and a sand-sprinkling valve plate, the sand-sprinkling valve body comprises an adjusting part and a fixing part, the upper end of the fixing part is connected to the adjusting part and is located inside the sand box; the fixing part is provided with a fixing bolt and a fixing screw hole, the fixing part is connected to the adjusting part through the fixing bolt, the lower end of the fixing part is embedded in the upper end of the sand-sprinkling valve plate, the lower end of the sand-sprinkling valve plate is provided with a conversion seat, the conversion seat is provided with a connecting bolt, the connecting bolt passes through the conversion seat, the sand-sprinkling valve plate and the fixing part and is connected to the sand box, the conversion seat and the sand-sprinkling valve plate are both provided with a sand-sprinkling channel communicated with the fixing part, and the sand-sprinkling valve body and the sand-sprinkling valve plate are provided with a communicating blowing channel.

[0006] Furthermore, the adjusting part is provided with an adjusting bolt, an end cover and a piston, the upper end of the adjusting part is provided with the end cover, the adjusting part is provided with the piston, the lower end of the adjusting bolt passes through the end cover and abuts against the upper end of the piston, the adjusting bolt is fixed by a locking nut, and the lower end of the piston passes through the adjusting part and the fixing part and abuts against the sand-sprinkling valve plate; the adjusting part and the fixing part are both provided with interconnected blowing channels, one end of the blowing channel of the adjusting part is connected to the piston, and the other end of the blowing channel of the adjusting part is connected to the blowing channel of the sand-sprinkling valve plate through the blowing channel of the fixing part.

[0007] Furthermore, the piston is provided with a piston rod, the upper end of the piston rod abuts against the lower end of the adjusting bolt, and the upper end of the piston rod is sleeved with a return spring; a sand blowing air channel is provided inside the lower end of the piston rod, the upper end of the sand blowing air channel is connected to the blowing channel of the adjusting part, and the lower end of the sand blowing air channel is connected to the locking valve port provided on the piston rod, and the locking valve port abuts against the sand spreading channel of the sand spreading valve plate.

[0008] Furthermore, the locking valve port sleeve is provided with a sealing ring.

[0009] Furthermore, a plurality of sand inlets are provided at the upper end of the fixing portion, and sand is provided in the sand box, and the sand enters the sand spreading channel of the fixing portion through the sand inlets.

[0010] Furthermore, sealing plates are provided at the connection between the sand spreading valve plate and the sand box, and at the connection between the regulating part and the fixing part.

[0011] Furthermore, the sand-spreading valve plate is provided with an air inlet connector, one end of which is connected to the air blowing channel of the sand-spreading valve plate, and the other end of which is connected to an external compressed air source.

[0012] Furthermore, the conversion seat is provided with a hose connector, and the hose connector is connected to the sand spreading channel of the conversion seat.

[0013] Compared with the prior art, the present invention has the following beneficial technical effects:

[0014] 1. The sand spreading valve body adopts a split structure, and the fixed part and the adjusting part are connected by bolts, which can minimize the valve body and meet the requirements of the sand spreading interface of the sand box without stopping the locomotive;

[0015] 2. The lock valve port can be closed by turning off the compressed air when sand is not being spread, and a sealing ring is set at the lock valve port to isolate the sand from the atmosphere, effectively preventing the sand from getting damp and hardening;

[0016] 3. Adjust the opening size of the sand spreading port by adjusting the bolt to achieve precise sand spreading. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the connection structure between the adjustment part and the fixing part of the utility model;

[0019] Figure 3 This is a flow diagram of the blowing channel of the utility model.

[0020] Figure annotation

[0021] 10. Sanding valve body; 20. Sanding valve plate; 21. Air blowing channel of sanding valve plate; 22. Sanding channel of sanding valve plate; 23. Air inlet connector; 30. Sand box; 40. Conversion seat; 41. Connecting bolts; 42. Hose connector; 43. Sanding channel of conversion seat; 50. Sealing plate;

[0022] 100, adjustment unit; 101, adjustment bolt; 102, end cap; 103, piston; 104, locking nut; 105, adjustment unit air blowing channel; 106, piston rod; 107, return spring; 108, sand blowing air channel; 109, locking valve port; 110, sealing ring;

[0023] 200, fixing part; 201, fixing bolt; 202, fixing screw hole; 203, air blowing channel of the fixing part; 204, sand inlet; 205, sand spreading channel of the fixing part. DETAILED DESCRIPTION

[0024] like Figure 1-Figure 2 The invention relates to a split sand-sprinkling valve, comprising a sand-sprinkling valve body 10 and a sand-sprinkling valve plate 20. The sand-sprinkling valve body 10 comprises an adjusting part 100 and a fixing part 200. The upper end of the fixing part 200 is connected to the adjusting part 100 and is located inside the sand box 30. The fixing part 200 is provided with a fixing bolt 201 and a fixing screw hole 202. The fixing part 200 is connected to the adjusting part 100 through the fixing bolt 201. The lower end of the fixing part 200 is embedded in the upper end of the sand-sprinkling valve plate 20. The lower end of the sand-sprinkling valve plate 20 is provided with a conversion seat 40. The conversion seat 40 is provided with a connecting bolt 41. The connecting bolt 41 passes through the conversion seat 40, the sand-sprinkling valve plate 20 and the fixing part 200 and is connected to the sand box 30. The conversion seat 40 and the sand-sprinkling valve plate 20 are both provided with a sand-sprinkling channel communicated with the fixing part 200. The sand-sprinkling valve body 10 and the sand-sprinkling valve plate 20 are provided with a communicating blowing channel.

[0025] The adjusting part 100 is provided with an adjusting bolt 101, an end cover 102 and a piston 103. The upper end of the adjusting part 100 is provided with an end cover 102, and a piston 103 is provided in the adjusting part 100. The lower end of the adjusting bolt 101 passes through the end cover 102 and abuts against the upper end of the piston 103. The adjusting bolt 101 is fixed by a locking nut 104. The lower end of the piston 103 passes through the adjusting part 100 and the fixing part 200 and abuts against the sanding valve plate 20; the adjusting part 100 and the fixing part 200 are both provided with interconnected blowing channels, one end of the adjusting part blowing channel 105 is connected to the piston 103, and the other end of the adjusting part blowing channel 105 is connected to the sanding valve plate blowing channel 21 through the fixing part blowing channel 203.

[0026] An adjusting bolt 101 is provided to control the opening size of the locking valve port 109 through the stroke of the piston 103, thereby controlling the amount of sand spreading.

[0027] The piston 103 is provided with a piston rod 106, the upper end of the piston rod 106 abuts against the lower end of the adjusting bolt 101, and the upper end of the piston rod 106 is sleeved with a return spring 107; a sand blowing air channel 108 is provided inside the lower end of the piston rod 106, the upper end of the sand blowing air channel 108 is connected to the blowing channel 105 of the adjusting part, and the lower end of the sand blowing air channel 108 is connected to the locking valve port 109 provided on the piston rod 106, and the locking valve port 109 abuts against the sand spreading channel 22 of the sand spreading valve plate.

[0028] The locking valve port 109 is provided with a sealing ring 110. The locking valve port 109 is provided with a sealing ring 110. When sand is not spread, the locking valve port 109 is not opened to ensure that moisture does not enter the sand box 30, which can effectively prevent the sand from hardening.

[0029] A plurality of sand inlets 204 are provided at the upper end of the fixing portion 200 . Sand is provided in the sand box 30 , and the sand enters the sand spreading channel 205 of the fixing portion through the sand inlets 204 .

[0030] Sealing plates 50 are provided at the connection between the sand spreading valve plate 20 and the sand box 30 , and at the connection between the adjusting portion 100 and the fixing portion 200 .

[0031] The sand spreading valve plate 20 is provided with an air inlet connector 23 , one end of the air inlet connector 23 is communicated with the sand spreading valve plate blowing channel 21 , and the other end of the air inlet connector 23 is connected to an external compressed air source.

[0032] The conversion seat 40 is provided with a hose connector 42 , which is communicated with a sand spreading channel 43 of the conversion seat.

[0033] like Figure 3 As shown, compressed air enters the sand spreading valve plate blowing channel 21 through the air inlet joint 23, and is connected to the adjusting part blowing channel 105 through the fixed part blowing channel 203. The compressed air enters the sand blowing air channel 108 provided at the lower end of the piston rod 106. A part of the compressed air pushes the piston 103 upward and opens the locking valve port 109 provided on the piston rod 106. At this time, the sand in the sand box 30 enters the fixed part sand spreading channel 205 through the sand inlet 204. The remaining part of the compressed air blows the sand in the fixed part sand spreading channel 205 to flow toward the sand spreading valve plate sand spreading channel 22 and the conversion seat sand spreading channel 43, and sprays the sand between the wheel and rail through the hose joint 42.

Claims

1. A split sand spreading valve, characterized by: The invention comprises a sand-sprinkling valve body (10) and a sand-sprinkling valve plate (20), wherein the sand-sprinkling valve body (10) comprises an adjusting portion (100) and a fixing portion (200), wherein the upper end of the fixing portion (200) is connected to the adjusting portion (100) and is located inside the sand box (30); the fixing portion (200) is provided with a fixing bolt (201) and a fixing screw hole (202), wherein the fixing portion (200) is connected to the adjusting portion (100) via the fixing bolt (201), and the lower end of the fixing portion (200) is embedded in the fixing screw hole (202). A conversion seat (40) is provided at the upper end of the sand-sprinkling valve plate (20) and the lower end of the sand-sprinkling valve plate (20). The conversion seat (40) is provided with a connecting bolt (41). The connecting bolt (41) passes through the conversion seat (40), the sand-sprinkling valve plate (20) and the fixing portion (200) to be connected to the sand box (30). The conversion seat (40) and the sand-sprinkling valve plate (20) are both provided with a sand-sprinkling channel communicating with the fixing portion (200). The sand-sprinkling valve body (10) and the sand-sprinkling valve plate (20) are provided with a communicating blowing channel.

2. The split sand spreading valve according to claim 1, characterized in that: The adjusting portion (100) is provided with an adjusting bolt (101), an end cover (102) and a piston (103); the upper end of the adjusting portion (100) is provided with the end cover (102); the piston (103) is provided in the adjusting portion (100); the lower end of the adjusting bolt (101) passes through the end cover (102) and abuts against the upper end of the piston (103); the adjusting bolt (101) is fixed by a locking nut (104); the lower end of the piston (103) passes through the adjusting portion (100) and the fixing portion (200) and abuts against the sand-sprinkling valve plate (20); the adjusting portion (100) and the fixing portion (200) are both provided with communicating air blowing channels; one end of the adjusting portion air blowing channel (105) is connected to the piston (103); the other end of the adjusting portion air blowing channel (105) is connected to the sand-sprinkling valve plate air blowing channel (21) through the fixing portion air blowing channel (203).

3. The split sand spreading valve according to claim 2, characterized in that: The piston (103) is provided with a piston rod (106), the upper end of the piston rod (106) is in contact with the lower end of the adjusting bolt (101), and the upper end of the piston rod (106) is sleeved with a return spring (107); a sand blowing air channel (108) is provided inside the lower end of the piston rod (106), the upper end of the sand blowing air channel (108) is connected to the blowing channel (105) of the adjusting portion, and the lower end of the sand blowing air channel (108) is communicated with a locking valve port (109) provided on the piston rod (106), and the locking valve port (109) is in contact with the sand spreading channel (22) of the sand spreading valve plate.

4. The split sand spreading valve according to claim 3, characterized in that: The locking valve port (109) is sleeved with a sealing ring (110).

5. The split sand spreading valve according to claim 3, characterized in that: The upper end of the fixing portion (200) is provided with a plurality of sand inlets (204), and the sand box (30) is provided with sand, and the sand enters the sand spreading channel (205) of the fixing portion through the sand inlets (204).

6. The split sand spreading valve according to claim 2, characterized in that: Sealing plates (50) are provided at the connection between the sand-spreading valve plate (20) and the sand box (30), and at the connection between the regulating part (100) and the fixing part (200).

7. The split sand spreading valve according to claim 2, characterized in that: The sand-spreading valve plate (20) is provided with an air intake connector (23), one end of which is in communication with the sand-spreading valve plate air blowing channel (21), and the other end of which is connected to an external compressed air source.

8. The split sand spreading valve according to claim 1, characterized in that: The conversion seat (40) is provided with a hose connector (42), and the hose connector (42) is communicated with the conversion seat sand spreading channel (43).

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