CN217515157U

CN217515157U - Sand spreading valve for side installation

Info

Publication number: CN217515157U
Application number: CN202221896330.XU
Authority: CN
Inventors: 曲长春; 刘光禄
Original assignee: Huatie Xiwu Faweilai Qingdao Traffic Equipment Co ltd
Current assignee: Huatie Xiwu Faweilai Qingdao Traffic Equipment Co ltd
Priority date: 2022-07-22
Filing date: 2022-07-22
Publication date: 2022-09-30
Anticipated expiration: 2032-07-22

Abstract

The utility model relates to a sanding valve for side installation, which comprises a valve body, wherein one side of the valve body is provided with a mounting seat, a sand inlet is arranged in the mounting seat, the other side of the valve body is provided with a sand cleaning port, and the upper end of the valve body is provided with an adjusting bolt; a sand outlet is arranged at the lower end of the valve body and provided with a sand outlet pipe; a fixed seat and a piston are arranged in the valve body, and the valve rod penetrates through the fixed seat and the piston; the valve body is provided with an air inlet valve port, a first air path and a compensation air port, the air inlet valve port is externally connected with a compressed air source, the lower end of the valve rod is provided with a locking valve, and the lower end of the valve rod is internally provided with a second air path penetrating through the locking valve; the locking valve is opened through compressed air to perform sand spreading, and sand in the sand box is blown through the compensation air port in an air pressure mode, so that the flowability of the sand is improved; when the locking valve is not used for sanding, the locking valve can be closed by closing the compressed air, so that the sand is effectively prevented from being wetted and hardened; the sand spreading amount can be adjusted through the adjusting bolt, and the accurate sand spreading can be realized by adjusting the flow of the compressed air of the air inlet valve port.

Description

Sand spreading valve for side installation

Technical Field

The utility model relates to a track traffic technical field especially relates to a sanding valve for side-mounting.

Background

The sanding device for rail transit is a device for improving the adhesion coefficient between wheel rails so as to reduce the sliding risk of rail vehicles. At present, a domestic sanding device is a gravity type sanding valve, is generally vertically arranged at the bottom of a sand box and is fixed through bolts, and cannot be installed on the side face; the conventional gravity type sanding valve has the following problems in the application process: the traditional gravity type sanding valve is of a straight-through structure, the sand box is communicated with the atmosphere through the sanding valve and a sanding pipe, sand at the bottom of the sand box is easily affected with damp and hardened or is frozen when encountering condensate water, and the sand is poor in fluidity, so that the sand discharging amount is insufficient or no sand is discharged, and the driving safety is influenced; the traditional gravity type sand spreading valve is communicated with a sand box and a sand spreading pipe, sand can enter the sand spreading pipe through the sand spreading valve due to vibration when sand is not spread, accidental sand falling or blockage of the sand spreading pipe can be easily caused, and when the sand spreading pipe is blocked, the sand can not be sprayed to a rail surface in time when sand spreading is needed; traditional gravity type sanding valve spills the sand volume through the intake size, the sanding volume control is unstable, when locomotive air supply wind pressure is great, lead to the sanding volume too much, the sanding volume too much can disturb track circuit normal product work, thereby can't detect the existence of train, harm driving safety, the sanding volume too much also can increase wheel rail face wearing and tearing and wheel rail section aggravation, accelerate wheel rail change frequency, cause the maintenance cost to increase, the sanding volume too much also can directly increase and use the sand cost.

SUMMERY OF THE UTILITY MODEL

The utility model provides a sanding valve for side-mounting, through with sanding valve side-mounting and locomotive sand box bottom, change the mounting structure of traditional gravity type sanding valve, and open the lock valve through compressed air, spray the grit of sand outlet department to between the wheel rail through compressed air, and blow to the grit in the sand box through the compensation wind gap atmospheric pressure, improved the mobility of grit; when the locking valve is not used for sanding, the locking valve can be closed by closing the compressed air, so that the sand is automatically isolated from the atmosphere, and the sand is effectively prevented from being damp and hardened; the sand spreading amount can be adjusted through the adjusting bolt, and the flow of compressed air at the throttle valve port can also be adjusted through the throttle valve, so that accurate sand spreading is realized.

In order to solve the problems in the background art, the utility model discloses a realize through following technical scheme:

a sanding valve for side installation comprises a valve body, wherein an installation seat is arranged on one side of the valve body, a sand inlet is formed in the installation seat, and the installation seat is fixedly connected to the bottom of the side surface of a locomotive sand box; a sand removal port is formed in the other side of the valve body; the upper end of the valve body is provided with an adjusting bolt, the adjusting bolt is in threaded connection with the valve body, and the adjusting bolt is fixed through an adjusting nut; a sand outlet is formed in the lower end of the valve body and provided with a sand outlet pipe; a fixed seat and a piston are arranged in the valve body, a valve rod penetrates through the fixed seat and the piston, and the valve rod is fixed by a piston nut at the upper part of the piston; the valve body is provided with an air inlet valve port, a first air path and a compensation air port, the air inlet valve port is externally connected with a compressed air source, the lower end of the valve rod is provided with a locking valve, a second air path penetrating through the locking valve is arranged in the lower end of the valve rod, and the air inlet valve port is communicated with the first air path, the compensation air port and the second air path. Installing the side surface of a sand spreading valve at the bottom of the side surface of a locomotive sand box through an installation seat, and inputting sand in the sand box into the sand spreading valve through a sand inlet; the sand cleaning port is arranged for cleaning foreign matters at the lock valve, compressed air enters the first air path through the air inlet valve port, the flow rate and the sand discharge amount of sand in the sand box are increased through the compensation air port, and the sand inlet is effectively prevented from being blocked; compressed air passes through a second air path arranged in the valve rod, passes through the locking valve and is blown downwards, so that the valve rod drives the piston to move upwards under the action of air pressure, the locking valve moves upwards under the drive of the valve rod, a sand outlet is opened, and the compressed air blows sand at the sand outlet to a railway rail surface through the sand outlet pipe; the stroke of the valve rod and the piston is adjusted by manually adjusting the adjusting bolt, so that the opening size of the locking valve in sanding is controlled, and the precise control of sanding amount is realized.

Preferably, the fixing seat and the two sides of the piston are both provided with sealing rings. And a sealing ring is arranged to increase the sealing performance of the fixed seat, the piston and the interior of the valve body.

Preferably, an adjusting spring is sleeved at the upper end of the valve rod and is positioned between the piston and the adjusting bolt; the locking valve that valve rod lower extreme was equipped with is located sand outlet department. The adjusting spring is arranged on the valve rod and used for elastically resetting the piston and the valve rod, and the locking valve is located at the sand outlet and used for closing and opening the sand outlet.

Preferably, the fixing seat is fixedly connected with the valve body through a fixing bolt.

Preferably, a throttle valve is arranged at the air inlet valve. The throttle valve is arranged to adjust the compressed air flow of the air inlet valve port, when the compressed air flow is low, the valve rod drives the locking valve to have smaller upward driving force, the opening angle of the sand outlet is smaller, and therefore the sand spreading amount is reduced; when the compressed air flow is larger, the valve rod drives the locking valve to increase the upward driving force, and the opening angle of the sand outlet is increased, so that the sand spraying amount is increased.

Preferably, the sand removing port is in threaded connection with a sand removing bolt. Set up sand removal bolt, convenient and fast clears up the foreign matter of lock valve department, prevents that the lock valve from blockking up and arousing down sand mouth and blockking up, causes the volume of spilling sand to reduce.

Preferably, a protective cover is arranged at the upper end of the valve body. Set up the protection casing, effectively protect valve body and adjusting bolt.

Compared with the prior art, the utility model discloses following profitable technological effect has:

1. the side surface of the sand spreading valve is arranged at the bottom of a locomotive sand box, the mounting structure of the traditional gravity type sand spreading valve is changed, the locking valve is opened through compressed air, sand at the sand outlet is sprayed between wheel tracks through the compressed air, and the compressed air is used for blowing the sand in the sand box through air pressure, so that the flowability of the sand is improved.

2. The locking valve can close the compressed air when not sanding, so that the locking valve can automatically isolate the sand from the atmosphere and effectively prevent the sand from being damp and hardened.

3. The sand spreading amount can be adjusted through the adjusting bolt, the stroke of the valve rod and the piston can be limited by adjusting the flow of compressed air of the air inlet valve port through the throttle valve, the opening size of the locking valve is limited, and accurate sand spreading is realized

Drawings

FIG. 1 is a schematic front view of the structure of the present invention;

description of the reference numerals

100. A valve body; 101. a mounting seat; 102. cleaning a sand port; 103. adjusting the bolt; 104. adjusting the nut; 105. a sand outlet; 106. a sand outlet pipe; 107. a fixed seat; 108. a piston; 109. a valve stem; 110. a piston nut; 111. an intake valve port; 112. a first gas path; 113. a compensation tuyere; 114. locking the valve; 115. a second gas path; 116. adjusting the spring; 117. fixing the bolt; 118. a protective cover; 119. cleaning the sand bolt; 120. a sand inlet; 200. locomotive sand box.

Detailed Description

As shown in FIG. 1, the sanding valve for side installation comprises a valve body 100, wherein one side of the valve body 100 is provided with an installation seat 101, a sand inlet 120 is arranged in the installation seat 101, and the installation seat 101 is fixedly connected to the bottom of the side surface of a locomotive sand box 200; the other side of the valve body 100 is provided with a sand cleaning opening 102; the upper end of the valve body 100 is provided with an adjusting bolt 103, the adjusting bolt 103 is in threaded connection with the valve body 100, and the adjusting bolt 103 is fixed through an adjusting nut 104; the lower end of the valve body 100 is provided with a sand outlet 105, and the sand outlet 105 is provided with a sand outlet pipe 106; a fixed seat 107 and a piston 108 are arranged inside the valve body 100, a valve rod 109 penetrates through the fixed seat 107 and the piston 108, and the valve rod 109 is fixed by a piston nut 110 on the upper part of the piston 108; the valve body 100 is provided with an air inlet port 111, a first air passage 112 and a compensation air port 113, the air inlet port 111 is externally connected with a compressed air source, the lower end of the valve rod 109 is provided with a lock valve 114, the lower end of the valve rod 109 is provided with a second air passage 115 penetrating through the lock valve 114, and the air inlet port 111 is communicated with the first air passage 112, the compensation air port 113 and the second air passage 115. The side surface of the sand valve 100 is arranged at the bottom of the side surface of the locomotive sand box 200 through the mounting seat 101, and sand in the sand box 200 is input into the sand valve 100 through the sand inlet 120; the sand cleaning port 102 is arranged and used for cleaning foreign matters at the locking valve 114, compressed air enters the first air path 112 through the air inlet valve port 111 and passes through the compensation air port 113, the flow rate and the sand discharging amount of sand in the sand box 200 are increased, and the sand inlet 120 is effectively prevented from being blocked; compressed air passes through a second air channel 115 arranged in the valve rod 109, passes through a locking valve 114, is blown downwards, so that the valve rod 109 drives the piston 108 to move upwards under the action of air pressure, the locking valve 114 moves upwards under the drive of the valve rod 109, so that the sand outlet 105 is opened, and the compressed air simultaneously blows sand at the sand outlet 105 to the railway rail surface through the sand outlet pipe 106; the stroke of the valve rod 109 and the piston 108 is adjusted by manually adjusting the adjusting bolt 103, so that the opening size of the locking valve 114 during sanding is controlled, and the precise control of the sanding amount is realized.

Sealing rings are arranged on two sides of the fixed seat 107 and the piston 108. A sealing ring is arranged to increase the sealing performance of the fixed seat 107, the piston 108 and the interior of the valve body 100

An adjusting spring 116 is sleeved on the upper end of the valve rod 109, and the adjusting spring 116 is positioned between the piston 108 and the adjusting bolt 103; a lock valve 114 provided at the lower end of the valve stem 109 is located at the sand outlet 105. The adjusting spring 116 is disposed on the valve rod 109 for elastically restoring the piston 108 and the valve rod 109, and the lock valve 114 is disposed at the sand outlet 105 for closing and opening the sand outlet 105.

The fixing base 107 is connected and fixed to the valve body 100 by a fixing bolt 117.

A throttle valve is arranged at the air inlet valve port 111. A throttle valve is arranged to adjust the compressed air flow of the air inlet valve port 111, when the compressed air flow is low, the valve rod 109 drives the locking valve 114 to push upwards and reduce the pushing force, the opening angle of the sand outlet 105 reduces, and therefore the sand spreading amount is reduced; when the compressed air flow is large, the valve rod 109 drives the locking valve 114 to push upward, and the opening angle of the sand outlet 105 is increased, so that the sand spraying amount is increased.

The sand removing port 102 is screwed with a sand removing bolt 119. The sand cleaning bolt 119 is arranged, so that foreign matters at the locking valve 114 can be cleaned conveniently and quickly, and the sand outlet 105 is prevented from being blocked due to the blockage of the locking valve 114, and the sand spreading amount is reduced.

The valve body 100 is provided at an upper end thereof with a shield 118. The protective cover 118 is provided to effectively protect the valve body 100 and the adjusting bolt 103.

Claims

1. A sanding valve for side mounting characterized by: the sand inlet valve comprises a valve body (100), wherein an installation seat (101) is arranged on one side of the valve body (100), a sand inlet (120) is formed in the installation seat (101), and the installation seat (101) is fixedly connected to the bottom of the side face of a locomotive sand box (200); a sand cleaning opening (102) is formed in the other side of the valve body (100); an adjusting bolt (103) is arranged at the upper end of the valve body (100), the adjusting bolt (103) is in threaded connection with the valve body (100), and the adjusting bolt (103) is fixed through an adjusting nut (104); a sand outlet (105) is formed in the lower end of the valve body (100), and a sand outlet pipe (106) is arranged at the sand outlet (105); a fixed seat (107) and a piston (108) are arranged in the valve body (100), a valve rod (109) penetrates through the fixed seat (107) and the piston (108), and the valve rod (109) is fixed by a piston nut (110) at the upper part of the piston (108); the valve body (100) is provided with an air inlet valve port (111), a first air passage (112) and a compensation air port (113), the air inlet valve port (111) is externally connected with a compressed air source, the lower end of the valve rod (109) is provided with a locking valve (114), a second air passage (115) penetrating through the locking valve (114) is arranged in the lower end of the valve rod (109), and the air inlet valve port (111) is communicated with the first air passage (112), the compensation air port (113) and the second air passage (115).

2. A valve for side mounting of sand, according to claim 1, characterized in that the holder (107), the piston (108) are provided with sealing rings on both sides.

3. The valve for side mounting of claim 1, characterized in that the valve stem (109) is terminated with an adjustment spring (116) and the adjustment spring (116) is located between the piston (108) and the adjustment bolt (103); the locking valve (114) arranged at the lower end of the valve rod (109) is positioned at the sand outlet (105).

4. A valve for side mounting of sand, according to claim 1, characterized in that the holder (107) is connected to the valve body (100) by means of a fixing bolt (117).

5. A valve for side mounting sanding according to claim 1, characterized in that a throttle valve is provided at the inlet valve port (111).

6. A valve for side mounting of sand claim 1, characterised in that the sand removal port (102) is threaded with a sand removal bolt (119).

7. A valve for side mounting of sand, according to claim 1, characterised in that the valve body (100) is provided with a protective cover (118) at its upper end.