Gate valve of converter steelmaking charging system

Abstract

The utility model discloses a gate valve of a converter steelmaking charging system, which comprises a valve body with a material conveying channel, a valve plate used for controlling the material conveying channel to open and close and a driving component used for driving the valve plate to move, the driving component is assembled in one end of the valve body and comprises a rack, a gear and a rotary driver, the rack is assembled on the valve plate, and the gear is assembled on the valve plate. The rack is meshed with the gear, the rotary driver drives the gear so as to drive the valve plate to be switched between the position for closing and the position for opening the conveying channel, in this way, the rotary driver such as a gear motor can be adopted to replace an air cylinder, the drive mode is changed into an electric mode from a pneumatic mode, and the outer edge of the drive assembly does not exceed the outer edge of the valve body. And the stroke of the cylinder shaft and the guide shaft of the cylinder does not need to be considered, so that the total length of the whole device can be greatly reduced, the problem of large occupied space is avoided, and meanwhile, the space utilization rate of a converter steelmaking workshop is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to converter steelmaking equipment technical field, especially a plug valve of converter steelmaking feeding system. BACKGROUND

[0002] In the converter steelmaking process, it is necessary to quantitatively add slagging material to the converter or ladle through the flux feeding system and the ferroalloy feeding system, and in the feeding process, the slagging material passes through the weighing and discharging stages in turn, wherein the plug valve plays a key role.

[0003] In the weighing stage, the plug valve is closed, the slagging material falls into the weighing hopper from the stock bin through the vibrating feeder, and the slagging material is blocked by the closed plug valve and cannot be discharged, and the weighing sensor on the weighing hopper weighs the slagging material; after the weighing is completed, the discharging stage is entered, that is, the plug valve is opened, and the slagging material enters the converter or ladle from the discharging chute or the receiving hopper.

[0004] At present, the plug valve of the utility model patent CN211420213U is commonly used, and the opening and closing of the plug valve are realized by means of the air cylinder, but such plug valves generally have the problem of occupying a large space, for example, when the plug stroke is 560mm, the total length of the complete plug valve is 3815mm, and the maintenance platform below the plug valve also needs to be made large, which not only has high cost, but also occupies a large space. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides a plug valve of a converter steelmaking feeding system to replace the existing pneumatic plug valve and avoid the problem of occupying a large space, while improving the space utilization rate of the converter steelmaking workshop.

[0006] To achieve the above-mentioned purpose, the utility model provides the technical scheme as follows:

[0007] The utility model provides a plug valve of a converter steelmaking feeding system, which comprises a valve body with a feeding channel, a valve plate for controlling the opening and closing of the feeding channel, and a driving assembly for driving the valve plate to move; the driving assembly is assembled in one end of the valve body away from the feeding channel, and comprises a rack, a gear and a rotary driver; the rack is assembled in the valve plate, the rack and the gear are engaged, and the rotary driver is drivingly connected with the gear; the driving assembly is used to switch the valve plate between the positions of closing and opening the feeding channel.

[0008] Further, the valve body is provided with a plurality of guide supports for supporting and guiding the valve plate, so that the movement track of the valve plate is perpendicular to the axial direction of the feeding channel.

[0009] Further, the guide support is a supporting roller, which is respectively arranged on the inner wall of the valve body on both sides of the movement track of the valve plate perpendicular to the valve plate, and the valve plate slides against the wheel surface of the supporting roller.

[0010] Further, the rotating driver is a reduction motor, and a transmission shaft is arranged between the reduction motor and the gear.

[0011] Further, the upper opening of the material conveying channel close to the weighing hopper is in a horn shape with the upper part being large and the lower part being small.

[0012] Further, the upper opening of the material conveying channel close to the weighing hopper is in a horn shape with the upper part being large and the lower part being small.

[0013] Further, the circumferential wall of the material conveying channel is provided with a socket on one side close to the rotating driver, and the valve plate is movably arranged in the socket.

[0014] Further, the valve body is provided with a mounting frame adjacent to the material conveying channel, the mounting frame is provided with a clearance on the side away from the material conveying channel, and the bottom of the mounting frame is fixed with a support, and the gear and the rotating driver are arranged in the support.

[0015] Further, the mounting frame is provided with a limit switch for triggering the rotating driver to be turned on or off, and the rack is provided with a trigger for cooperating with the limit switch.

[0016] Further, the trigger is a limit plumb, and the number of the limit plumb is two, and the two limit plumbs are arranged at two ends of the valve plate along the movement direction of the valve plate, so as to correspond to the positions of the valve plate for closing and opening the material conveying channel.

[0017] The technical scheme has the following beneficial effects:

[0018] 1. The rotating driver such as a reduction motor is used to replace the cylinder in the prior art, so that the driving mode is changed from pneumatic to electric, that is, the rotating driver drives the gear to rotate, drives the rack and the valve plate to displace, and switches between the positions for closing and opening the material conveying channel, and the outer edge of the driving assembly does not exceed the outer edge of the valve body, and the stroke of the cylinder shaft and the guide shaft of the cylinder does not need to be considered, so that the total length of the whole device can be greatly reduced, for example, from 3815mm to 1760mm, so that 2055mm of occupied space can be saved, the problem of large occupied space can be avoided, and the space utilization rate of the converter steelmaking workshop is improved.

[0019] 2. The utility model discloses can effectively reduce the size of the matching maintenance platform, with the saving use material can also arrange other equipment in the limited space, to further improve the space utilization.

[0020] 3. The utility model discloses a plug valve simple structure, reasonable in design, compact layout, high feasibility and strong practicality. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The plug valve structure of the converter steelmaking feeding system in the opening of the feeding channel is shown in the schematic view of the structure.

[0022] Figure 2 The plug valve structure of the converter steelmaking feeding system in the opening of the feeding channel is shown in the schematic view of the structure.

[0023] Figure 3 The plug valve structure of the converter steelmaking feeding system in the opening of the feeding channel is shown in the schematic view of the structure. Figure 2

[0024] Figure 4 The plug valve structure of the converter steelmaking feeding system in the opening of the feeding channel is shown in the schematic view of the structure. Figure 2

[0025] Figure 5 The plug valve structure of the converter steelmaking feeding system in the opening of the feeding channel is shown in the schematic view of the structure. Figure 2 DETAILED DESCRIPTION

[0026] To further illustrate the embodiments, the utility model provides the attached drawing. These drawings are part of the utility model disclosure, which is mainly used to illustrate the embodiments, and can be explained with the related description of the specification. With reference to these contents, those skilled in the art should understand other possible embodiments and the advantages of the utility model. The components in the drawing are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0027] The utility model will be further illustrated in conjunction with the attached drawings and specific embodiments.

[0028] Referring to Figures 1 to 5 , the embodiment provides a plug valve of a converter steelmaking feeding system (hereinafter referred to as plug valve) for weighing and discharging slagging materials in the converter steelmaking process.

[0029] As Figure 1 , Figure 2 and Figure 3 ​​​As shown, the plug valve of the embodiment comprises a valve body 1 with a material conveying passage 11, a valve plate 2 for controlling the opening and closing of the material conveying passage 11, and a driving assembly 3 for driving the valve plate 2 to move. The upper and lower opposite sides of the material conveying passage 11 are respectively provided with a first flange 4 for connecting a weighing hopper and a second flange 5 for connecting a lower material receiving hopper.

[0030] The driving assembly 3 is assembled in the end of the valve body 1 away from the material conveying passage 11, and comprises a rack 32, a gear 31 and a rotary driver 33. The rack 32 is fixedly assembled at the bottom of the valve plate 2 by welding, and the rack 32 and the valve plate 2 are arranged in equal length. The rack 32 and the gear 31 are engaged, and the rotary driver 33 is connected with the gear 31 through a transmission shaft 34.

[0031] In use, the driving assembly 3 is used to drive the valve plate 2 to switch between the positions of closing and opening the material conveying passage 11.

[0032] In the embodiment, a socket 111 is formed in the side of the circumferential wall of the material conveying passage 11 close to the rotary driver 33. The valve body 1 has a mounting bracket 13 adjacent to the material conveying passage 11.

[0033] As shown in Figure 1 and Figure 2 , the side of the mounting bracket 13 away from the material conveying passage 11 has a clearance opening 131 for the valve plate 2, i.e. the mounting bracket 13 is U-shaped, so that the valve plate 2 extends out of the clearance opening 131 when the material conveying passage 11 is opened.

[0034] As shown in Figure 1 and Figure 5 , the bottom of the mounting bracket 13 is fixed with a support 8, and the gear 31 and the rotary driver 33 are both assembled in the support 8. The support 8 can be freely adjusted in the space between the second flange 5 and the outer edge of the valve body 1 according to actual conditions, so as to adapt to various occasions with limited vertical space.

[0035] As shown in Figure 1 and Figure 3 , the valve plate 2 is movably inserted into the socket 111, and the valve body 1 is provided with a plurality of guide supports 12. Specifically, the guide supports 12 are support rollers, and a plurality of support rollers are assembled in the inner walls of the valve body 1 on both sides perpendicular to the movement track of the valve plate 2, i.e. support rollers are installed on the inner walls of the material conveying passage 11 and the mounting bracket 13. Of course, in other embodiments, the guide supports 12 can also adopt a sliding groove structure or a sliding rail structure, and form a sliding connection relationship with each other.

[0036] The valve plate 2 is slidably abutted against the wheel surface of the guide support 12, so as to form stable support for the valve plate 2. At the same time, the valve plate 2 is limited by the guide support 12, so as to ensure that the movement track of the valve plate 2 is perpendicular to the upper and lower axial directions of the material conveying passage 11.

[0037] If the converter steelmaking charging system uses the existing pneumatic slide gate valve, during the opening or closing of the slide gate, the cylinder shaft and guide shaft will move along with the slide gate, resulting in a long displacement stroke of 560mm for the slide gate.

[0038] In summary, this embodiment uses a rotary actuator, such as a geared motor 33', instead of the cylinder in the prior art to change the driving method from pneumatic to electric. Specifically, the rotary actuator 33 drives the gear 31 to rotate, thereby displacing the rack 32 and the valve plate 2 to switch between closing and opening the material conveying channel 11. Furthermore, the outer edge of the driving assembly 3 does not extend beyond the outer edge of the valve body 1, and the stroke of the cylinder shaft and guide shaft does not need to be considered. Therefore, as... Figure 2 The total length L of the entire set of equipment shown can be significantly reduced, such as from 3815mm to 1760mm, which can save 2055mm of space and avoid the problem of large space occupation, while improving the space utilization rate of the converter steelmaking workshop.

[0039] This embodiment can effectively reduce the size of the supporting maintenance platform to save materials, and can also arrange other equipment in a limited space to further improve space utilization.

[0040] Furthermore, the slide gate valve in this embodiment has a simple structure, reasonable design, compact layout, high feasibility, and strong practicality.

[0041] Further preferred, such as Figure 3 As shown, the upper opening 112 of the material conveying channel 11 near the weighing hopper is funnel-shaped, wider at the top and narrower at the bottom, to facilitate material feeding.

[0042] Further preferred, such as Figure 1 , Figure 3 and Figure 4 As shown, the mounting bracket 13 is equipped with a limit switch 6 for triggering the rotary drive 33 to open and close. The rack 32 is provided with a trigger element that cooperates with the limit switch 6, and the specific trigger element is a limit stop. Of course, the bottom of the inner wall of the socket 111 is provided with a clearance space to avoid the back and forth movement of the trigger element.

[0043] In this specific embodiment, the valve body 1 is welded from channel steel and angle steel, the weighing hopper is fixedly connected to the first flange 4, and the limiting strike gauge is composed of several angle steels and welded to the bottom of the rack 32 to ensure that the limiting strike gauge can follow the valve plate 2 to make linear reciprocating motion.

[0044] The two limiters are respectively a first limiter 7 and a second limiter 7', and are arranged at two ends of the valve plate 2 along the movement direction of the valve plate 2, so as to correspond to the positions of the valve plate 2 closing and opening the material conveying passage 11 respectively.

[0045] As shown in Figure 3 When the material needs to be discharged, the gear 31 is rotated by the transmission shaft 34 driven by the reduction motor 33', and then the rack 32 is moved correspondingly through the meshing relationship between the gear 31 and the rack 32, that is, the valve plate 2 is moved linearly by the rack 32, and when the material conveying passage 11 is completely opened, the valve plate 2 leaves the material conveying passage 11, and the second limiter 7' touches the limit switch 6 to make the reduction motor 33' power off, at this time, the material conveying passage 11 is completely opened.

[0046] As shown in Figure 4 When the material is discharged, the gear 31 is reversely rotated and driven by the reduction motor 33', and then the rack 32 is moved, that is, the valve plate 2 is moved in the opposite direction by the rack 32, and when the material conveying passage 11 is completely closed, the first limiter 7 touches the limit switch 6 to make the reduction motor 33' power off, at this time, the material conveying passage 11 is completely closed or shut.

[0047] In addition, as described in the utility model patent CN219102069U, the screw rod and the nut of the plug valve are seriously worn after being used for a period of time, which causes the transmission efficiency to be reduced, and the dust escaping from the plug valve enters the internal gap between the screw rod and the nut, increases the friction between them, and slows down the opening and closing speed of the plug valve, or even blocks the screw rod and the nut, so that the plug valve cannot be normally opened and closed, and even the stepping motor is burned out.

[0048] In the embodiment, the gear and the rack are used to replace the screw rod and the nut, which not only avoids the wear of the screw rod and the nut caused by the frequent opening and closing of the plug valve, but also avoids the blockage of the screw rod and the nut caused by the dust accumulation, so as to improve the stability and reliability of the whole device.

[0049] Although the utility model is specifically shown and introduced in combination with the preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the spirit and scope of the utility model defined in the appended claims, and all the changes are within the protection scope of the utility model.

Claims

1. A plug valve for a charging system of a converter steelmaking plant, characterized in that: The valve body has a material conveying channel, a valve plate for controlling the opening and closing of the material conveying channel, and a driving assembly for driving the valve plate to move; The driving assembly is assembled in the end of the valve body away from the material conveying channel, and comprises a rack, a gear and a rotary driver, the rack is assembled in the valve plate, the rack and the gear are engaged, and the rotary driver drives the gear; the driving assembly is used for driving the valve plate to switch between the positions of closing and opening the material conveying channel; The valve body is provided with a plurality of guide supports for supporting and guiding the valve plate, so that the movement track of the valve plate is perpendicular to the axial direction of the material conveying channel.

2. The plug valve of a charging system of a converter steelmaking according to claim 1, characterized in that: The guide supports are support rollers, which are respectively assembled in the two side inner walls of the valve body perpendicular to the movement track of the valve plate, and the valve plate slides against the wheel surface of the support rollers.

3. The plug valve of a charging system of a converter steelmaking according to claim 1, characterized in that: The rotary driver is a speed reducer motor, and a transmission shaft is arranged between the speed reducer motor and the gear.

4. A plug valve for a charging system of a converter according to any one of claims 1 to 3, characterized in that: The opposite side openings of the material conveying channel are respectively provided with a first flange for connecting a weighing hopper and a second flange for connecting a receiving hopper.

5. The plug valve of a charging system of a converter steelmaking according to claim 4, characterized in that: The upper opening of the material conveying channel near the weighing hopper is in a horn shape with the upper part being larger and the lower part being smaller.

6. A plug valve for a charging system of a converter according to any one of claims 1 to 3, characterized in that: The circumferential wall of the material conveying channel is provided with a socket on the side close to the rotary driver, and the valve plate is movably inserted into the socket.

7. The plug valve of a charging system of a converter steelmaking according to claim 6, characterized in that: The valve body has a mounting frame adjacent to the material conveying channel, and the side of the mounting frame away from the material conveying channel has a clearance for the valve plate; the bottom of the mounting frame is fixed with a support, and the gear and the rotary driver are assembled in the support.

8. The plug valve of a charging system of a converter steelmaking according to claim 7, characterized in that: The mounting frame is provided with a limit switch for triggering the opening and closing of the rotary driver, and the rack is provided with a trigger for cooperating with the limit switch.

9. The plug valve of a charging system of a converter steelmaking according to claim 8, characterized in that: The trigger is a limit plunger, and the number of limit plungers is two, which are respectively arranged at the two ends of the valve plate along the movement direction of the valve plate to correspond to the positions of closing and opening the material conveying channel.

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