Marble valve for spray gun of side-blown converter
By using guide rib strips to lift steel balls and threaded connections in the bullet valve, the problem of difficulty in inserting the gun and uncertain position of the inclined pipe of the gun is solved, and the effect of easy inserting the gun and neat connection is achieved.
Patent Information
- Application Number
- CN202411774745.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-01-07
AI Technical Summary
The existing bullet valve is prone to falling into the depression when inserting the gun, which makes it difficult to insert the gun, and the position of the inclined pipe of the spray gun is uncertain, which leads to inconvenient connection.
A bullet valve is designed including a three-way valve body and a guide rib strip. The guide rib strip holds a steel ball to roll up and down along the guide rib strip to avoid contact with the bottom, and the pressure gland and the valve body are threaded to fix the spray gun positioning. groove.
It realizes that the steel ball is easily inserted into the spray gun, avoiding the difficulty of inserting the gun, and ensuring that the inclined pipe of the spray gun is always in the upper position, making the connection more convenient and the site is neat.
Smart Images
Figure CN119267593A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to a valve structure, and in particular relates to a bullet valve used for a side-blowing furnace spray gun. Background Art
[0002] The ball valve is a commonly used auxiliary equipment on the side-blown furnace spray gun. It is generally installed on the copper water jacket tuyere of the side-blown furnace. After the spray gun is inserted into the ball valve, it extends into the molten pool inside the copper water jacket. During operation, natural gas is introduced into the tail pipe of the spray gun, and air is introduced into the upper inclined pipe. The natural gas and air are mixed in the spray gun and then melted into the molten pool. During maintenance, the spray gun needs to be pulled out. In order to prevent the molten liquid from flowing back, air needs to be introduced into the upper inclined pipe of the ball valve. After the spray gun is pulled out, the steel ball in the ball valve falls due to its own weight and blocks the gun insertion port at the tail of the valve body. The existing ball valve has the following two problems: First, the diameter of the channel for the up and down oblique movement of the steel ball is larger than the diameter of the steel ball, so the steel ball rolls on the lower surface of the inclined channel. Due to the existence of the horizontal gun insertion hole in the valve body, a concave nest is formed in the lower part of the inclined rolling channel of the steel ball. In this way, when the spray gun is inserted, the steel ball will fall into this nest when the gun head pushes the steel ball to roll upward, making it difficult to insert the gun. Second, the pressure cap at the tail of the ball valve is threadedly connected to the valve body. After assembly, the spray gun positioning groove on the pressure cap cannot be fixed at the same point. After the spray gun is inserted into the ball valve, the inclined tube on the upper part of the spray gun cannot be guaranteed to be in an upward position, which makes it inconvenient to connect the pipes and the pipelines are also messy. Summary of the invention
[0003] The invention provides a bullet valve for a side-blowing furnace spray gun, aiming to solve the problems of difficulty in inserting the gun and uncertainty in the position of the inclined pipe of the spray gun.
[0004] To this end, the present invention adopts the following technical solutions: A bullet valve for a side-blowing furnace spray gun comprises a three-way bullet valve body, the valve body comprising a horizontal spray gun insertion channel and an inclined bullet valve air inlet channel, the bullet valve air inlet channel is connected to the middle position of the spray gun insertion channel, an inclined steel ball rolling channel is also provided at one end of the valve body near the spray gun insertion port, and a steel ball is placed in the steel ball rolling channel; at least two protruding guide ribs are provided on the inner wall of the steel ball rolling channel along the rolling direction of the steel ball, the guide ribs lift the steel ball so that the bottom of the steel ball is out of contact with the steel ball rolling channel, and the steel ball rides on the guide ribs and rolls up and down along the guide ribs.
[0005] Furthermore, the guide ribs include two, and the two guide ribs are symmetrically arranged on the left and right sides of the inner wall of the steel ball rolling channel.
[0006] Furthermore, the cross section of the guide rib is triangular, semicircular, elliptical or other shapes that can hold up the steel ball.
[0007] Furthermore, the spray gun is inserted into the channel inlet with a gland connected to the flange, and the top and bottom of the rear end of the gland are provided with grooves, and the grooves are used to fix the spray gun.
[0008] The beneficial effects of the present invention are as follows: the steel ball rolls on the two guide ribs with little resistance, and the spray gun can be easily inserted, preventing the steel ball from falling into the concave socket and causing difficulty in inserting the gun; since the pressure cover is fixed with bolts, the grooves for fixing the spray gun can be ensured to be in upper and lower positions, so that after the spray gun is inserted into the ball valve, the position of the air inlet pipe on the spray gun is always at the top, the pipeline connection is convenient, and the site is relatively tidy. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a structural schematic diagram of an existing ball valve; Figure 2 It is a schematic diagram of the state when the spray gun is inserted into the existing bullet valve; Figure 3 This is a schematic diagram of the spray gun after it is installed in place; Figure 4 It is a schematic diagram of the structure of the ball valve of the present invention; Figure 5 It is a schematic diagram of the state after the spray gun of the present invention is installed in place; In the figure: 1-valve body, 2-spray gun insertion channel, 3-steel ball, 4-valve seat, 5-pressure cover, 6-groove, 7-positioning pin, 8-steel ball rolling channel, 9-ball valve air inlet channel, 10-brick layer, 11-copper water jacket, 12-air outlet small water jacket, 13-spray gun, 14-spray gun handle, 15-spray gun air inlet, 16-spray gun natural gas inlet; 19-bolt, 21-guide rib, 22-flange. DETAILED DESCRIPTION
[0010] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments: like Figure 1 As shown in FIG. 1 , it is a schematic diagram of an existing ball valve, in which the steel ball rolling channel 8 is an inclined channel, the bottom surface of the steel ball 3 contacts the bottom surface of the steel ball rolling channel 8, and the steel ball 3 rolls along the steel ball rolling channel 8. A concave recess is formed at the bottom of the steel ball rolling channel 8, so when the spray gun is inserted, the steel ball 3 will fall into the recess when the gun head pushes the steel ball 3 to roll upward, making it difficult to insert the gun. Figure 2 As shown, at this time, the steel ball 3 is in a concave recess formed by the spray gun insertion channel 2 on the lower surface of the steel ball rolling channel 8, and the steel ball 3 is low against the spray gun head end, making it difficult to insert the spray gun. Figure 3 This is the state after the spray gun is installed in place. At this time, the steel ball 3 is pushed into the top of the spray gun, and the spray gun handle is stuck in the groove 6 on the ball valve cover 5.
[0011] like Figure 3 and4 As shown, a ball valve for a side-blowing furnace spray gun of the present invention comprises a valve body 1, a valve seat 4, a pressure cap 5 and a steel ball 2. The valve body 1 is a three-way pipe structure, with a connecting flange on the left side, a ball valve air inlet channel 9 on the upper side, and a spray gun insertion channel 2 and a steel ball rolling channel 8 inside. There is a guide rib 21 with a triangular cross section on each side of the steel ball rolling channel 8. The guide rib 21 lifts the steel ball 3 so that the bottom of the steel ball 3 is out of contact with the steel ball rolling channel 8. The steel ball 3 straddles the guide rib 21 and rolls up and down along the guide rib 21; the valve seat 4 is installed in the valve body 1, and the pressure cap 5 is fixed to the valve body 1 by bolts through the flange, and the valve seat 4 is pressed tightly. Two grooves 6 for fixing the spray gun are opened at the upper and lower positions on the right side of the pressure cap 5.
[0012] The cross-sectional shape of the guide rib 21 on the valve body 1 can be a triangle, a semicircle, an ellipse, etc.; the groove on the gland 5 is always in the up and down position after assembly.
[0013] The ball valve of the present invention is applied to the side-blown furnace as follows: A small water jacket 12 for air inlet is installed on the copper water jacket 11 of the side-blowing furnace body. The ball valve of the present invention is fixed on the small water jacket 12 for air inlet by bolts. At this time, the steel ball 3 is located at the lower part of the steel ball rolling channel 8 under the action of its own weight and blocks the valve seat 4. When the spray gun 13 is inserted into the ball valve, the head of the spray gun pushes the steel ball 3 to roll upward. Since the steel ball 3 is suspended on two guide ribs 21, the rolling resistance is very small. The spray gun 13 can be easily inserted into the ball valve. After it is in place, the spray gun 13 is turned right by a certain angle, and the handle 14 on the spray gun can be stuck in the groove 6 on the ball valve gland 20, thereby fixing the spray gun. Since the groove 6 is always in the upper and lower positions, it can ensure that the air inlet pipes 15 on all spray guns are all facing upward, which is convenient for taking over.
Claims
1. A bullet valve for a side-blown furnace spray gun, comprising a three-way bullet valve body (1), the valve body (1) comprising a horizontal spray gun insertion channel (2) and an inclined bullet valve air inlet channel (9), the bullet valve air inlet channel (9) being connected to the middle position of the spray gun insertion channel (2), an inclined steel ball rolling channel (8) being provided in the valve body (1) near one end of the spray gun insertion port, the steel ball (3) being placed in the steel ball rolling channel (8); characterized in that: At least two protruding guide ribs (21) are provided on the inner wall of the steel ball rolling channel (8) along the rolling direction of the steel ball (3); the guide ribs (21) lift the steel ball (3) so that the bottom of the steel ball (3) is out of contact with the steel ball rolling channel (8); the steel ball (3) rides on the guide ribs (21) and rolls up and down along the guide ribs (21).
2. The ball valve for the side-blowing furnace lance according to claim 1, characterized in that: The guide ribs (21) include two guide ribs (21), which are symmetrically arranged on the left and right sides of the inner wall of the steel ball rolling channel (8).
3. The ball valve for the side-blown furnace lance according to claim 1, characterized in that: The cross section of the guide rib (21) is triangular, semicircular, elliptical or other shapes that can support the steel ball (3).
4. The ball valve for the side-blown furnace lance according to claim 1, characterized in that: The spray gun insertion channel (2) has an inlet flange connected to a gland (5), and the top and bottom of the rear end of the gland (5) are provided with grooves (6), and the grooves (6) are used to fix the spray gun.