Sealing mechanism and pulverized coal screening and cleaning device

Abstract

The utility model relates to the technical field of blast furnace coal injection, in particular to a sealing mechanism and a pulverized coal screening and cleaning device, which comprises a mounting component, the mounting component comprises a pulverized coal screen main body, a slag discharging box arranged on one side of the pulverized coal screen main body, and a slag inlet arranged between the pulverized coal screen main body and the slag discharging box; and a sealing member. According to the pulverized coal screening and cleaning device, when the drum screen is used for screening pulverized coal, a sealing plate is adjusted through an adjusting assembly, so that a first groove in the sealing plate is attached to a sealing block, and the sealing effect is achieved; external air is prevented from making direct contact with an inner cavity of the pulverized coal screen body, impurities in the inner cavity of the pulverized coal screen body are pumped and discharged through the exhaust pipe, sealing is adjusted through the adjusting assembly at the moment, the inner cavity of the pulverized coal screen body can be communicated with the exhaust pipe, the impurity pumping and discharging effect is achieved, the slag discharging opening is sealed, and the slag discharging effect is improved. And air is prevented from entering the inner cavity of the pulverized coal sieve main body in the impurity pumping and discharging process.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace coal injection, in particular to a sealing mechanism and a coal powder screening and cleaning device. Background Art

[0002] In the blast furnace pulverized coal injection process, in order to ensure that the pulverized coal can be smoothly sprayed into the blast furnace without causing pressure fluctuations and blocking pipes and guns, a special pulverized coal screen is required to screen out the debris in the pulverized coal.

[0003] At present, coal powder screen is widely used in the metallurgical industry, but this device and technology have shortcomings. The slag discharge port of the coal powder screen is directly exposed to the air, which poses a great safety hazard. The screen surface is not cleaned thoroughly, and there are light debris such as woven fibers, cotton wool, wood chips, large particles of unqualified coal powder, etc. in the screen. Manual secondary cleaning is required, which is labor-intensive and will generate dust, polluting the working environment. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the problem that the slag discharge port of the coal powder screen body is directly in contact with the air in the existing sealing mechanism, which poses a great safety hazard, the present utility model is proposed.

[0006] Therefore, the utility model aims to provide a sealing mechanism.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: including, an installation component, the installation component includes a coal powder screen body, a slag discharge box arranged on one side of the coal powder screen body, and a slag inlet arranged between the coal powder screen body and the slag discharge box; and a sealing component, the sealing component includes a sealing component arranged in the slag discharge box and matched with the slag inlet, and an adjustment component arranged in the slag discharge box and matched with the sealing component.

[0008] As a preferred solution of the sealing mechanism of the utility model, the sealing assembly includes a fixed block arranged in the slag discharge box, a sealing plate arranged in the fixed block, a first groove arranged on the upper part of the sealing plate, and a sealing block arranged in the slag discharge box;

[0009] The first groove is matched with the sealing block.

[0010] As a preferred solution of the sealing mechanism described in the utility model, wherein: the adjustment component includes a fixed slide rail arranged in the fixed block, a movable plate arranged in the fixed slide rail, a first spring arranged at the bottom of the movable plate, a lifting guide plate arranged on the movable plate, and a sliding block arranged in the lifting guide plate; the lifting guide plate and the sealing plate are fixedly connected.

[0011] As a preferred solution of the sealing mechanism described in the utility model, it includes: a transmission assembly, a connecting plate arranged on the sliding block, a connecting rod arranged on the connecting plate, a turntable arranged on the connecting rod, and a first limit groove arranged on the turntable.

[0012] As a preferred solution of the sealing mechanism described in the utility model, it includes: a fixing component, a second groove arranged on one side of the slag discharge box, a second spring arranged in the second groove, a first limit block arranged on the second spring, a fixing rod arranged in the two grooves, a limit clamp arranged outside the fixing rod, and a second limit groove arranged on one side of the limit clamp; the second limit groove is adapted to the turntable.

[0013] As a preferred solution of the sealing mechanism described in the utility model, it includes: a suction and exhaust component, an exhaust port arranged on the slag discharge box, a filter screen arranged on the exhaust port, and an exhaust pipe arranged on the exhaust port.

[0014] As a preferred solution of the sealing mechanism described in the utility model, it includes: a slag discharge assembly, a slag discharge port arranged at the bottom of the slag discharge box, and a slag lowering pipe arranged at the lower end of the slag discharge port.

[0015] The beneficial effects of the utility model are as follows: when the drum screen is screening coal powder, the sealing plate is adjusted by the adjusting component so that the first groove on the sealing plate fits the sealing block to achieve a sealing effect, avoiding direct contact between the external air and the inner cavity of the coal powder screen body, and exhausting impurities in the inner cavity of the coal powder screen body through the exhaust pipe. At this time, the seal is adjusted by the adjusting component so that the inner cavity of the coal powder screen body can be interconnected with the exhaust pipe to achieve the effect of exhausting impurities, and the slag discharge port is sealed to avoid air entering the inner cavity of the coal powder screen body during the process of exhausting impurities.

[0016] As a preferred solution of the coal powder screening and cleaning device described in the utility model, wherein: the adjusting component, the drum screen arranged in the coal powder screen body, and the limiting component arranged in the coal powder screen body; the cleaning component, including the cleaning component arranged on the limiting component.

[0017] As a preferred solution of the coal powder screening and cleaning device described in the utility model, the limiting assembly includes a knob bolt arranged on one side of the coal powder screen body, a second limiting block arranged on the knob bolt, a third limiting groove arranged in the coal powder screen body, and a wedge block arranged on the knob bolt.

[0018] As a preferred solution of the coal powder screening and cleaning device described in the utility model, the cleaning component includes a clamping plate arranged in the coal powder screen body, a third spring arranged between the two clamping plates, and a brush arranged in the clamping plate.

[0019] The beneficial effects of the utility model are as follows: when pumping out impurities, the two clamping plates can be adjusted through the limit assembly, so that the two clamping plates are respectively attached to the inner and outer walls of the drum screen to clean the impurities in the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0021] Figure 1 It is an overall schematic diagram of a sealing mechanism.

[0022] Figure 2 It is a schematic diagram of an overall cutaway view of a sealing mechanism.

[0023] Figure 3 A sealing mechanism Figure 2 A is an enlarged schematic diagram.

[0024] Figure 4 A schematic diagram of an adjustment component of a sealing mechanism.

[0025] Figure 5 The present invention is a schematic cross-sectional view of a fixed component of a sealing mechanism.

[0026] Figure 6 A sealing mechanism Figure 5 A is an enlarged schematic diagram.

[0027] Figure 7 It is a schematic cross-sectional view of a limit clamp of a sealing mechanism.

[0028] Figure 8 It is a schematic cross-sectional view of the main body of a coal powder screening and cleaning device.

[0029] Fig. 9A coal powder screening and cleaning device Figure 8 A is an enlarged schematic diagram.

[0030] Fig.10 The figure is a schematic diagram of a cleaning component of a coal powder screening and cleaning device. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0034] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0035] Example 1

[0036] Reference Figures 1 to 3 , is the first embodiment of the utility model, which provides an effect of achieving sealing during the slag discharge process to prevent air from entering the coal powder screen body through the slag discharge port during the slag discharge process, including an installation component 100, the installation component 100 includes a coal powder screen body 101, a slag discharge box 102 arranged on one side of the coal powder screen body 101, and a slag inlet 103 arranged between the coal powder screen body 101 and the slag discharge box 102; and a sealing component 200, the sealing component 200 includes a sealing component 201 arranged in the slag discharge box 102 and matched with the slag inlet 103, and an adjusting component 202 arranged in the slag discharge box 102 and matched with the sealing component 201.

[0037] The utility model includes a transmission component 203, a connecting plate 203a arranged on the sliding block 202e, a connecting rod 203b arranged on the connecting plate 203a, a rotating disk 203c arranged on the connecting rod 203b, and a first limiting groove 203d arranged on the rotating disk 203c.

[0038] The sealing plate 201b is slidably connected in the fixed block 201a. Through the adaptation of the first groove 201c and the sealing block 201d, the sealing plate 201b can be moved vertically upward, and its upper end is against the slag discharge box 102. The first groove 201c and the sealing block 201d fit together to achieve a sealing effect.

[0039] The utility model also includes an exhaust assembly 205, an exhaust port 205a arranged on the slag discharge box 102, a filter screen 205b arranged on the exhaust port 205a, and an exhaust pipe 205c arranged on the exhaust port 205a; and includes a slag discharge assembly 206, a slag discharge port 206a arranged at the bottom of the slag discharge box 102, and a lower slag pipe 206b arranged at the lower end of the slag discharge port 206a.

[0040] The filter screen 205b is fixedly installed in the exhaust port 205a, the exhaust pipe 205c is fixedly installed outside the exhaust port 205a, the slag discharge port 206a is opened at the bottom of the slag discharge box 102, and the lower slag pipe 206b is fixedly installed at the bottom of the slag discharge box 102, and it is interconnected with the slag discharge port 206a.

[0041] Stop pouring in coal powder, and blow up the impurities on the drum screen 301 through the pulse blowing device, and then exhaust the air through the exhaust pipe 205c. At this time, adjust the sealing plate 201b so that the bottom inclined surface of the sealing plate 201b fits the bottom of the inner wall of the slag box 102. At this time, the exhaust pipe 205c can exhaust the impurities in the coal powder screen body 101 into the slag box 102 and adsorb them on the filter screen 205b. At this time, close the exhaust pipe 205c, and the impurities will fall due to gravity, slide down along the bottom inclined surface of the slag box 102, and enter the lower slag pipe 206b for centralized collection and treatment.

[0042] In summary, when the drum screen 301 is screening the coal powder, the sealing plate 201b is adjusted by the adjusting component 202, so that the first groove 201c on the sealing plate 201b fits the sealing block 201d, so as to achieve the sealing effect and prevent the external air from directly contacting the inner cavity of the coal powder screen body 101. The impurities in the inner cavity of the coal powder screen body 101 are extracted through the exhaust pipe 205c. The inner cavity of the coal powder screen body 101 can be interconnected with the exhaust pipe 205c to achieve the effect of extracting impurities, and the slag discharge port 206a is sealed to prevent air from entering the inner cavity of the coal powder screen body 101 during the process of extracting impurities.

[0043] Example 2

[0044] Reference Figures 4 to 7 , which is the second embodiment of the utility model. This embodiment is different from the first embodiment in that: this embodiment provides a sealing mechanism, which solves the problem of how to flexibly seal the sealing plate.

[0045] The adjustment assembly 202 includes a fixed slide rail 202a arranged in the fixed block 201a, a movable plate 202b arranged in the fixed slide rail 202a, a first spring 202c arranged at the bottom of the movable plate 202b, a lifting guide plate 202d arranged on the movable plate 202b, and a sliding block 202e arranged in the lifting guide plate 202d. The lifting guide plate 202d and the sealing plate 201b are fixedly connected.

[0046] The fixed slide rail 202a is fixedly installed inside the fixed block 201a, the movable plate 202b is slidably connected inside the fixed slide rail (202a), the bottom of the first spring 202c is fixedly installed inside the fixed block 201a, and the sliding block 202e is slidably connected inside the lifting guide plate 202d.

[0047] It also includes a transmission component 203, a connecting plate 203a arranged on the sliding block 202e, a connecting rod 203b arranged on the connecting plate 203a, a turntable 203c arranged on the connecting rod 203b, and a first limiting groove 203d arranged on the turntable 203c; and a fixing component 204, a second groove 204a arranged on one side of the slag discharge box 102, a second spring 204b arranged in the second groove 204a, a first limiting block 204c arranged on the second spring 204b, a fixing rod 204d arranged in the second groove 204a, a limiting clamp 204e arranged outside the fixing rod 204d, and a second limiting groove 204f arranged on one side of the limiting clamp 204e; the second limiting groove 204f is adapted to the turntable 203c.

[0048] The turntable 203c is fixedly connected through the connecting plate 203a, the connecting rod 203b and the sliding block 202e, and the connecting rod 203b is rotatably connected to the inside of the fixed block 201a, the turntable 203c is adapted to the second limit groove 204f, the fixed rod 204d is slidably connected to the inside of the limit clamp 204e, and the limit clamp 204e is movably connected to the second groove 204a through the fixed rod 204d.

[0049] If the sealing plate 201b needs to be adjusted, the limiting card 204e can be pressed so that the limiting card 204e is limited in the second groove 204a through the first limiting block 204c. At this time, the second limiting groove 204f will move to the position of the first limiting groove 203d. At this time, the turntable 203c can be rotated, thereby driving the sliding block 202e to rotate around the center of the turntable 203c through the connecting rod 203b and the connecting plate 203a. At this time, the lifting guide plate 202d will It moves along with the sliding block 202e to realize the up and down movement of the lifting guide plate 202d, thereby driving the sealing plate 201b fixedly connected to the lifting guide plate 202d. When the upper part of the sealing plate 201b contacts the inner upper part of the slag discharge box 102 or its bottom contacts the bottom of the inner wall of the slag discharge box 102, the limit clamp 204e is pushed outward at this time, and the limit clamp 204e will be limited in the first limit groove 203d on the turntable 203c to achieve a fixing effect.

[0050] In summary, the sealing plate 201b can be adjusted up and down by cooperating with the adjustment component 202 through the transmission component 203 to avoid direct contact between the air and the inner cavity of the coal powder screen body 101. The position of the sealing plate 201b after adjustment can be fixed by the fixing component 204 to avoid the air entering the inner cavity due to loosening of the sealing plate 201b during the extraction process and when the coal powder screen body 101 is working, thereby posing a safety hazard.

[0051] Example 3

[0052] Reference Figures 8 to 10 , which is the third embodiment of the utility model. This embodiment is different from the second embodiment in that: this embodiment provides a coal powder screening and cleaning device, which solves the problem that impurities exist between the gaps of the drum screen and manual secondary cleaning is required.

[0053] The adjusting component 300 includes a drum screen 301 disposed in the coal powder screen body 101 and a limiting assembly 302 disposed in the coal powder screen body 101; and the cleaning component 400 includes a cleaning assembly 401 disposed on the limiting assembly 302. The limiting assembly 302 includes a knob bolt 302a disposed on one side of the coal powder screen body 101, a second limiting block 302b disposed on the knob bolt 302a, a third limiting groove 302c disposed in the coal powder screen body 101, and a wedge block 302d disposed on the knob bolt 302a.

[0054] The second limit block 302b is matched with the third limit groove 302c, the knob bolt 302a is threadedly connected to both sides of the coal powder screen body 101, the wedge block 302d is slidably connected to one side of the coal powder screen body 101, and the wedge block 302d is rotatably connected to one end of the knob bolt 302a through a bearing. By rotating the knob bolt 302a to make the second limit block 302b disengage from the third limit groove 302c, the effect of moving the wedge block 302d can be achieved.

[0055] The cleaning assembly 401 includes a clamping plate 401a disposed in the coal powder screen body 101, a third spring 401b disposed between the two clamping plates 401a, and a brush 401c disposed in the clamping plate 401a.

[0056] Both sides of the clamping plate 401a are inclined, and the inclined surfaces thereof fit in with the inclined surfaces of the wedge block 302d. Moving the wedge block 302d can make the two clamping plates move toward each other through the elasticity of the third spring 401b, so that the several brushes 401c installed inside thereof fit in with the inner and outer walls of the drum screen 301 to clean it.

[0057] The forward rotation of the knob bolt 302a drives the second limit block 302b to disengage from the third limit groove 302c. At this time, the knob bolt 302a is continued to be rotated to make the knob bolt 302a disengage from the coal powder screen body 101, thereby driving the wedge block 302d to move backward, and the extrusion force on the inclined surfaces of the two clamping plates 401a disappears. At this time, the tension on both ends of the third spring 401b will disappear, and the elastic force of the third spring 401b will recover, thereby driving the two clamping plates to move toward each other, so that the brush 401c is close to the inner and outer walls of the drum screen 301. When the drum screen 301 rotates, the brush 401c scrapes off the impurities between the gaps of the drum screen 301 for extraction and discharge.

[0058] In summary, by cooperating with the limiting component 302 and the cleaning component 401, the impurities in the drum screen 301 can be cleaned for a second time, which can effectively improve the screening efficiency.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A sealing mechanism, characterized in that: include, An installation component (100), the installation component (100) comprising a coal powder screen body (101), a slag discharge box (102) arranged on one side of the coal powder screen body (101), and a slag inlet (103) arranged between the coal powder screen body (101) and the slag discharge box (102); and, A sealing component (200), the sealing component (200) comprising a sealing assembly (201) disposed in the slag discharge box (102) and cooperating with the slag inlet (103), and an adjusting assembly (202) disposed in the slag discharge box (102) and cooperating with the sealing assembly (201).

2. The sealing mechanism according to claim 1, characterized in that: The sealing assembly (201) comprises a fixing block (201a) arranged in the slag discharge box (102), a sealing plate (201b) arranged in the fixing block (201a), a first groove (201c) arranged on the upper part of the sealing plate (201b), and a sealing block (201d) arranged in the slag discharge box (102); The first groove (201c) and the sealing block (201d) are matched with each other.

3. The sealing mechanism according to claim 2, characterized in that: The adjustment component (202) comprises a fixed slide rail (202a) arranged in the fixed block (201a), a movable plate (202b) arranged in the fixed slide rail (202a), a first spring (202c) arranged at the bottom of the movable plate (202b), a lifting guide plate (202d) arranged on the movable plate (202b), and a sliding block (202e) arranged in the lifting guide plate (202d); The lifting guide plate (202d) and the sealing plate (201b) are fixedly connected.

4. The sealing mechanism according to claim 3, characterized in that: It also includes a transmission assembly (203), a connecting plate (203a) arranged on the sliding block (202e), a connecting rod (203b) arranged on the connecting plate (203a), a rotating disk (203c) arranged on the connecting rod (203b), and a first limiting groove (203d) arranged on the rotating disk (203c).

5. The sealing mechanism according to claim 4, characterized in that: It also includes a fixing assembly (204), a second groove (204a) arranged on one side of the slag discharge box (102), a second spring (204b) arranged in the second groove (204a), a first limiting block (204c) arranged on the second spring (204b), a fixing rod (204d) arranged in the second groove, a limiting clamp (204e) arranged outside the fixing rod (204d), and a second limiting groove (204f) arranged on one side of the limiting clamp (204e); The second limiting groove (204f) is matched with the rotating disk (203c).

6. The sealing mechanism according to claim 5, characterized in that: It also includes an exhaust assembly (205), an exhaust port (205a) arranged on the slag discharge box (102), a filter screen (205b) arranged on the exhaust port (205a), and an exhaust pipe (205c) arranged on the exhaust port (205a).

7. The sealing mechanism according to claim 5, characterized in that: It also includes a slag discharge assembly (206), a slag discharge port (206a) arranged at the bottom of the slag discharge box (102), and a slag lower pipe (206b) arranged at the lower end of the slag discharge port (206a).

8. A coal powder screening and cleaning device, characterized in that: comprising the seal of claim 1; An adjusting component (300), a drum screen (301) arranged in the coal powder screen body (101), and a limiting component (302) arranged in the coal powder screen body (101); The cleaning component (400) comprises a cleaning component (401) arranged on the limiting component (302).

9. The coal powder screening and cleaning device according to claim 8, characterized in that: The limiting assembly (302) comprises a knob bolt (302a) arranged on one side of the coal powder screen body (101), a second limiting block (302b) arranged on the knob bolt (302a), a third limiting groove (302c) arranged in the coal powder screen body (101), and a wedge block (302d) arranged on the knob bolt (302a).

10. The coal powder screening and cleaning device according to claim 9, characterized in that: The cleaning assembly (401) comprises a clamping plate (401a) arranged in the coal powder screen body (101), a third spring (401b) arranged between the two clamping plates (401a), and a brush (401c) arranged in the clamping plate (401a).

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