Cartridge valve of coal injection gun

Abstract

The utility model provides a coal injection gun ball valve which comprises a ball valve body, and a clamping groove assembly is installed at the inlet end of the ball valve body. The clamping groove assembly comprises a clamping base, one end of the clamping base is communicated with the inlet end of the marble valve body, and an annular clamping groove is machined in the other end of the clamping base. The three radial protrusions are distributed on the edge of the inner side of the annular clamping groove at equal intervals. A center hole of the clamping sleeve is communicated with the clamping seat; the three clamping jaws are distributed along the peripheral surface of the clamping sleeve at equal intervals, the clamping jaws enter the sliding rail from the guide gaps and rotate to drive the three clamping jaws to be overlapped with the three radial protrusions, axial locking of the clamping seat and the clamping sleeve and embedded connection of the three clamping jaws are achieved, and the clamping seat and the clamping sleeve are locked in the axial direction. Therefore, the contact area between the card seat and the card sleeve is increased, and the connection stability of the card seat and the card sleeve is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of poppet valve, especially to coal gun poppet valve. BACKGROUND

[0002] The poppet valve is used for installing the coal gun in the blast furnace tuyere straight blowpipe, when the coal gun is inserted into the blast furnace tuyere from the inner hole of the poppet valve, the sealing ball in the poppet valve is opened by the coal gun rod, (the sealing ball enters the bending part of the poppet valve), when the coal gun is pulled out of the blast furnace tuyere, the sealing ball resets, and the sealing ball in the poppet valve is automatically closed under the action of the pressure in the blast furnace, and the high-temperature gas in the furnace is not leaked.

[0003] Among them, the inlet end of the poppet valve is usually designed with a quick connector, the poppet valve and the coal gun are connected through the quick connector, the traditional quick connector adopts the connecting mode of the locking pin and the clamping groove, because the contact area of the locking pin and the clamping groove is small, the coal gun is prone to shaking, and long-time shaking has the risk of falling off, affecting the stability of the coal gun during use. UTILITY MODEL CONTENTS

[0004] The utility model discloses a coal gun poppet valve, which solves the problem of the small contact area of the locking pin and the clamping groove in the traditional quick connector, affecting the stability of the coal gun during use.

[0005] The utility model provides a coal gun poppet valve, including poppet valve body, the inlet end of poppet valve body is installed with clamping groove subassembly,

[0006] The clamping groove subassembly includes:

[0007] The clamping groove subassembly includes:

[0008] Three radial protrusions are distributed equidistantly on the inner side edge of the annular clamping groove, and a guide gap is formed between adjacent radial protrusions;

[0009] A sliding track is formed between the radial protrusion and the clamping seat;

[0010] The center hole of the clamping sleeve is used for bearing the coal gun, and the center hole of the clamping sleeve is communicated with the clamping seat;

[0011] Three clamping claws are distributed equidistantly along the outer peripheral surface of the clamping sleeve, and the central angle between adjacent clamping claws is 120 degrees;

[0012] The thickness of the clamping claw is matched with the depth of the sliding track.

[0013] Preferably, the end of the ferrule away from the ferrule is threaded with a hexagonal nut, which is used to fix the position of the pulverized coal gun in the ferrule.

[0014] Preferably, the outer periphery of the ferrule is provided with a handle, which is used to drive the ferrule to rotate.

[0015] Preferably, the end of the ferrule away from the hexagonal nut is machined with a convex surface, which is adapted to the inner wall of the ferrule.

[0016] Preferably, the ball valve body is equipped with a sealing ball, which is made of stainless steel.

[0017] Preferably, the end of the card holder near the ball valve body is machined with a hemispherical groove, which matches the spherical surface of the sealing ball.

[0018] Preferably, the top of the curved portion of the ball valve body is provided with a removable cap.

[0019] Preferably, the outlet end of the ball valve body is provided with a flange, and a reinforcing rib is provided at the angle between the flange and the ball valve body.

[0020] This utility model provides a ball valve for a coal injection gun:

[0021] By using a combination of a card holder, radial protrusions, guide slots, sliding rails, ferrules, and claws, the card holder and the ball valve body are connected together. The ferrule is then inserted into the card holder, and the claws enter the sliding rail from the guide slots. Rotation causes the three claws to overlap with the three radial protrusions, achieving axial locking between the card holder and the ferrule. The embedded connection of the three claws increases the contact area between the card holder and the ferrule, thereby improving the connection stability between the card holder and the ferrule. As a result, slight vibrations of the coal injection gun will not cause the card holder and the ferrule to fall off. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the card holder, annular card groove, radial protrusion, and guide gap in this utility model;

[0025] Figure 3 This is a schematic diagram of the radial protrusion, guide gap, and sliding track in this utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the card sleeve and card claw in this utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the ball valve body, sealing ball, and flange in this utility model;

[0028] Figure 6 This is a cross-sectional view of the ball valve body in this utility model;

[0029] Figure 7 This is an assembly drawing of the ball valve body, sleeve, seat and hexagonal nut in this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1-Pellet valve body, 11-Sealing ball, 2-Slot assembly, 21-Slot seat, 211-Annular slot, 211a-Radial protrusion, 211b-Guide slot, 211c-Sliding track, 212-Hemispherical groove, 22-Flange, 221-Claw, 222-Hex nut, 3-Handle, 4-Cap plug, 5-Flange, 51-Reinforcing rib. Detailed Implementation

[0032] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the pulverized coal injection gun ball valve includes a ball valve body 1, and a slot assembly 2 is installed at the inlet end of the ball valve body 1.

[0036] The slot assembly 2 includes: a slot seat 21, one end of which is connected to the inlet end of the ball valve body 1, and the other end of which is machined with an annular slot 211; three radial protrusions 211a, which are equally spaced on the inner edge of the annular slot 211, and a guide gap 211b is formed between adjacent radial protrusions 211a; a sliding track 211c is formed between the radial protrusions 211a and the slot seat 21; a sleeve 22, the central hole of which is used to support the pulverized coal gun, and the central hole of the sleeve 22 is connected to the slot seat 21; and three claws 221, which are equally spaced along the outer peripheral surface of the sleeve 22, with a central angle of 120 degrees between adjacent claws 221; the thickness of the claws 221 is adapted to the depth of the sliding track 211c.

[0037] Therefore, after connecting the card holder 21 and the ball valve body 1 together, the sleeve 22 is inserted into the card holder 21, and the claws 221 enter the sliding track 211c from the guide gap 211b. By rotating the sleeve 22, the sleeve 22 drives the three claws 221 to overlap with the three radial protrusions 211a, thereby achieving axial locking between the card holder 21 and the sleeve 22. The embedded connection of the three claws 221 increases the contact area between the card holder 21 and the sleeve 22, thereby improving the connection stability between the card holder 21 and the sleeve 22.

[0038] Specifically, the ball valve body 1 is used to connect the pulverized coal injection gun and the blast furnace. The card seat 21 is fixed at the inlet end of the ball valve body 1. The annular groove 211 is used to install the radial protrusion 211a. The radial protrusion 211a and the annular groove 211 can be integrally formed or designed to be detachably connected. The guide gap 211b between adjacent radial protrusions 211a is adapted to the shape of the claw 221. The design of the thickness of the claw 221 being adapted to the depth of the sliding track 211c facilitates the rotation of the claw 221 in the sliding track 211c.

[0039] Furthermore, the design quantities of the jaws 221, radial protrusions 211a, and guide slots 211b can be matched, and the specific quantities of the jaws 221, radial protrusions 211a, and guide slots 211b can be specifically processed according to requirements.

[0040] In some embodiments, such as Figure 1 As shown, the end of the ferrule 22 away from the ferrule 221 is threaded with a hexagonal nut 222, which is used to fix the position of the coal injection gun in the ferrule 22.

[0041] Specifically, the hexagonal nut 222 has a through hole with the same inner diameter as the sleeve 22, and the hexagonal nut 222 can fix the position of the coal injection gun in the sleeve 22.

[0042] In some embodiments, such as Figure 1 and Figure 7 As shown, a handle 3 is provided on the outer periphery of the sleeve 22, and the handle 3 is used to drive the sleeve 22 to rotate;

[0043] Specifically, the handle 3 can drive the sleeve 22 to rotate in the slot 21, so as to cause the claw 221 and the radial protrusion 211a to overlap;

[0044] It should be noted that the handle 3 and the sleeve 22 can be integrally formed or detachably connected. In addition, the outer wall of the handle 3 can be processed with anti-slip texture to increase the friction between the hand and the handle 3.

[0045] In some embodiments, such as Figure 4 As shown, the end of the ferrule 22 away from the hexagonal nut 222 is machined with a convex surface, which is adapted to the inner wall of the ferrule 21.

[0046] Specifically, a concave surface that matches the convex surface of the sleeve 22 is machined inside the card holder 21. The convex surface of the sleeve 22 is designed to increase the contact area between the sleeve 22 and the card holder 21.

[0047] In some embodiments, such as Figure 5 and Figure 6 As shown, the ball valve body 1 is equipped with a sealing ball 11, which is made of stainless steel.

[0048] Specifically, the sealing ball 11 is a component of the ball valve body 1, and the sealing ball 11 is made of stainless steel to improve its high temperature resistance.

[0049] In addition, the sealing ball 11 can also be made of ceramic material.

[0050] In some embodiments, such as Figure 6 As shown, a hemispherical groove 212 is machined at one end of the card holder 21 near the ball valve body 1, and the hemispherical groove 212 matches the spherical surface of the sealing ball 11;

[0051] Specifically, the design of the hemispherical groove 212 increases the fit between the spherical surface of the sealing ball 11 and the card seat 21, expands the contact area to improve sealing performance, and reduces the leakage of gas inside the blast furnace.

[0052] In some embodiments, such as Figure 1 As shown, a removable cap 4 is provided at the top of the curved part of the ball valve body 1;

[0053] Specifically, the cap 4 is connected to the bent part of the ball valve body 1 by threads, and the detachable design of the cap 4 makes it easy to remove the sealing ball 11 from the ball valve body 1.

[0054] In some embodiments, such as Figure 7 As shown, a flange 5 is provided at the outlet end of the ball valve body 1, and a reinforcing rib 51 is provided at the angle between the flange 5 and the ball valve body 1.

[0055] Specifically, there are four reinforcing ribs 51, arranged in a triangle, and the four reinforcing ribs 51 are evenly distributed along the flange 5 to increase the connection strength between the ball valve body 1 and the flange 5.

[0056] The working principle of this application is illustrated below with a preferred embodiment:

[0057] Connect the card seat 21 to the inlet end of the ball valve body 1, then connect the ball valve body 1 to the tuyeres of the blast furnace through the flange 5, then connect the hexagonal nut 222 to the threaded end of the sleeve 22, then insert the sleeve 22 into the card seat 21, and the claws 221 enter the sliding track 211c from the guide gap 211b. Rotate the sleeve 22 through the handle 3, and the sleeve 22 drives the three claws 221 to overlap with the three radial protrusions 211a, thereby achieving axial locking between the card seat 21 and the sleeve 22.

[0058] The external pulverized coal injection gun barrel is inserted through the hexagonal nut 222 and sequentially enters the sleeve 22 and the seat 21. As the pulverized coal injection gun barrel extends into the blast furnace along the ball valve body 1, the pulverized coal injection gun barrel pushes the sealing ball 11 into the curved part of the ball valve body 1. When the pulverized coal injection gun barrel is pulled out from the overall mechanism, the sealing ball 11 automatically resets under its own weight and the pressure inside the blast furnace to prevent blast furnace backfire.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A pulverized coal injection gun ball valve, comprising a ball valve body (1), characterized in that, The inlet end of the ball valve body (1) is equipped with a slot assembly (2); The card slot assembly (2) includes: Card holder (21), one end of which is connected to the inlet end of the ball valve body (1), and the other end of which is machined with an annular groove (211). Three radial protrusions (211a) are evenly distributed on the inner edge of the annular groove (211), and guide gaps (211b) are formed between adjacent radial protrusions (211a). A sliding track (211c) is formed between the radial protrusion (211a) and the card holder (21). A ferrule (22) has a central hole for supporting a coal injection gun, and the central hole of the ferrule (22) is connected to the ferrule base (21). Three claws (221) are evenly distributed along the outer peripheral surface of the sleeve (22), and the central angle between adjacent claws (221) is 120 degrees. The thickness of the claw (221) is adapted to the depth of the sliding track (211c).

2. The pulverized coal injection gun ball valve according to claim 1, characterized in that, The end of the sleeve (22) away from the claw (221) is threaded with a hexagonal nut (222), which is used to fix the position of the coal injection gun in the sleeve (22).

3. The pulverized coal injection gun ball valve according to claim 1, characterized in that, The outer periphery of the sleeve (22) is provided with a handle (3), which is used to drive the sleeve (22) to rotate.

4. The pulverized coal injection gun ball valve according to claim 2, characterized in that, The end of the sleeve (22) away from the hexagonal nut (222) is machined with a convex surface, which is adapted to the inner wall of the card holder (21).

5. The pulverized coal injection gun ball valve according to claim 1, characterized in that, The ball valve body (1) is equipped with a sealing ball (11), which is made of stainless steel.

6. The pulverized coal injection gun ball valve according to claim 5, characterized in that, The card holder (21) has a hemispherical groove (212) machined at one end near the ball valve body (1), and the hemispherical groove (212) matches the spherical surface of the sealing ball (11).

7. The pulverized coal injection gun ball valve according to claim 1, characterized in that, The top of the curved portion of the ball valve body (1) is provided with a removable cap (4).

8. The pulverized coal injection gun ball valve according to claim 1, characterized in that, The outlet end of the ball valve body (1) is provided with a flange (5), and a reinforcing rib (51) is provided at the angle between the flange (5) and the ball valve body (1).

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