Quick pressurizing device of hot blast stove

Abstract

The utility model provides a quick pressurizing device for a hot blast stove. According to the quick pressurizing device for the hot-blast stove, the hot-blast stove is fixedly connected to the top of a bottom plate, a cold air pipe is installed on the outer surface of the hot-blast stove, a tee joint is installed at the other end of the cold air pipe, a connector is installed at one outlet of the tee joint, and a first valve is installed at the other outlet of the tee joint through a pressurizing pipe; a pressure control valve is installed at the other end of the first valve through a butt joint pipe, the other end of the pressure control valve is fixedly connected with an installation pipe, a butt joint ring is installed in the pressure control valve, and a fixing ring is installed at the end, close to the butt joint pipe, of the inner wall of the pressure control valve. According to the quick pressurizing device of the hot blast stove, quick pressurizing can be achieved through mutual cooperation of the pressure control valve and the pressure control tank, meanwhile, the pressure in the hot blast stove can be balanced, the stability of the pressure in the hot blast stove is improved, and the working stability of the hot blast stove can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rapid pressurization of hot blast stoves, in particular to a rapid pressurization device for hot blast stoves. Background Art

[0002] A hot blast stove is a thermal power machine, which has become a replacement product for electric heat sources and traditional steam power heat sources in many industries. There are many varieties and complete series of hot blast stoves. They are divided into hand-fired and machine-fired types according to the coal feeding method, and into coal, oil, gas stoves, etc. according to the fuel type.

[0003] The pressurization process of the hot blast stove mainly involves filling cold air into the hot blast stove to balance the pressure difference on both sides of the valve plate, so as to smoothly open the valve. This process is called the pressurization process. The commonly used pressurization method at present is to input air into the hot blast stove through a blast furnace blower. The specific operation is to lead a pressurization pipe from the cold air pipe of the blast furnace to pressurize the hot blast stove.

[0004] However, during the pressurization process of the hot blast stove, the pressurization efficiency is slow, and it is difficult to control the pressure value inside the hot blast stove, resulting in unstable pressure difference on both sides of the valve plate, thus affecting the normal operation of the hot blast stove.

[0005] Therefore, it is necessary to provide a rapid pressurization device for hot blast stoves to solve the above technical problems. Summary of the Utility Model

[0006] The utility model provides a rapid pressurization device for hot blast stoves, which solves the problems of slow efficiency and difficult control of the pressurization pressure value during the pressurization process of the hot blast stove, resulting in unstable pressure difference on both sides of the valve plate and affecting the normal operation of the hot blast stove.

[0007] To solve the above technical problems, the rapid pressurization device for hot blast stoves provided by the utility model includes: a bottom plate;

[0008] A hot blast stove, which is fixedly connected to the top of the bottom plate. A cold air pipe is installed on the outer surface of the hot blast stove. The other end of the cold air pipe is installed with a three-way head. One outlet of the three-way head is installed with a connector. The other outlet of the three-way head is installed with a first valve through a pressurization pipe. The other end of the first valve is installed with a pressure control valve through a docking pipe. The other end of the pressure control valve is fixedly connected with an installation pipe. A docking ring is installed inside the pressure control valve. A fixing ring is installed at one end of the inner wall of the pressure control valve close to the docking pipe. The other end of the fixing ring is fixedly connected with a support spring. The other end of the support spring is fixedly connected with a movable disk. Sealing rings and sealing plugs are respectively installed at the other end of the movable disk. Two limiting components are installed between the fixing ring and the docking ring;

[0009] The air supply assembly is fixedly connected to the top of the bottom plate near one side. A delivery pipe is installed at the outlet of the air supply assembly. The other end of the delivery pipe is installed with a second valve. An installation rack is installed on the top of the bottom plate. A pressure control tank is installed on the top of the installation rack. An electronic pressure gauge is installed on the outer surface of the pressure control tank at the top through an installation base.

[0010] The connector is connected through a pipe and a three-way joint, and a valve can be installed in the middle of the pipe if necessary. The connector is connected to the cold air main pipe. The other end of the installation pipe is connected to one end of the pressure control tank. Both ends of the docking ring are provided with openings for inserting the sealing plug. The sealing ring is located at the position near the outer surface of the other end of the movable disc. The sealing ring contacts the docking ring to increase the sealing performance. The sealing plug is inserted into the opening of the docking ring. The limiting component includes a sliding rod and a sliding block. The sliding block slides on the outer surface of the sliding rod. The sliding block is connected to the outer surface of the movable disc, which can increase the stability of the movement of the movable disc. The other end of the second valve is connected to the other end of the pressure control tank through a pipe. The data collected by the electronic pressure gauge can be summarized into the controller.

[0011] Preferably, a control box with a box door is installed on the top of the bottom plate. An operation screen is installed on the front of the control box.

[0012] A power switch and a controller for controlling the operation of the equipment are installed inside the control box. A lock is provided on the box door.

[0013] Preferably, a filtering component is installed on the top of the bottom plate. The filtering component includes a filtering box. An air inlet pipe is installed on the back of the filtering box.

[0014] A lid is provided on the top of the filtering box.

[0015] Preferably, two groups of installation buckles are installed inside the filtering box. A filter plate is installed between each group of installation buckles.

[0016] Two installation buckles are in a group.

[0017] Preferably, the air supply assembly includes a protective shell. Ventilation holes are provided on both sides of the protective shell.

[0018] The ventilation holes assist in ventilation.

[0019] Preferably, a blast furnace blower is installed inside the protective shell. A suction pipe is installed at the inlet of the blast furnace blower.

[0020] The other end of the suction pipe is connected to the front of the filtering box, and the filtered air can be inhaled.

[0021] Compared with the related art, the hot blast stove rapid pressurization device provided by the present utility model has the following beneficial effects:

[0022] The present utility model provides a rapid pressure charging device for a hot blast stove. In order to increase the control of the pressure value during the rapid pressure charging of the hot blast stove, a pressure control tank with an electronic pressure gauge is installed on the top of the bottom plate through a mounting frame. The pressure value inside the pressure control tank can be monitored in real time through the electronic pressure gauge. Then, the pressure control valve is connected to the pressure control tank through a mounting pipe. The movable disk and the docking ring inside the pressure control tank can cooperate with each other to balance the pressure value in the hot blast stove. The pressure control tank and the pressure control valve are connected to the cold air pipe and the air supply component through a docking pipe with a first valve, a second valve and a conveying pipe. Through this structure, while achieving rapid pressure charging through the cooperation of the pressure control valve and the pressure control tank, the pressure inside the hot blast stove can also be balanced, increasing the stability of the pressure inside the hot blast stove and facilitating the improvement of the working stability of the hot blast stove. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 FIG. is a schematic structural diagram of a preferred embodiment of the rapid pressure charging device for a hot blast stove provided by the present utility model;

[0024] Figure 2 FIG. is a schematic structural diagram of the filter assembly provided by the present utility model;

[0025] Figure 3 FIG. is a schematic structural diagram of the pressure control valve provided by the present utility model;

[0026] Figure 4 FIG. is a schematic structural diagram of the sealing plug provided by the present utility model;

[0027] Figure 5 FIG. is a schematic structural diagram of the blast furnace blower provided by the present utility model;

[0028] Figure 6 FIG. is a schematic structural diagram of the filter plate provided by the present utility model.

[0029] Reference numerals in the figure: 1, bottom plate; 2, hot blast stove; 3, operation screen; 4, control box; 5, box door; 6, three-way head; 7, connection head; 8, pressure charging pipe; 9, first valve; 10, docking pipe; 11, pressure control valve; 12, cold air pipe; 13, conveying pipe; 14, air supply component; 141, protective shell; 142, ventilation hole; 143, blast furnace blower; 144, suction pipe; 15, docking ring; 16, sealing plug; 17, filter assembly; 171, filter box; 172, mounting buckle; 173, filter plate; 18, air inlet pipe; 19, mounting frame; 20, second valve; 21, pressure control tank; 22, mounting base; 23, electronic pressure gauge; 24, mounting pipe; 25, limit assembly; 26, fixing ring; 27, support spring; 28, movable disk; 29, sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0031] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , where Figure 1 is a schematic structural diagram of a preferred embodiment of the hot blast stove rapid pressurization device provided by the present utility model; Figure 2 is a schematic structural diagram of the filter assembly provided by the present utility model; Figure 3 is a schematic structural diagram of the pressure control valve provided by the present utility model;

[0032] Figure 4 is a schematic structural diagram of the sealing plug provided by the present utility model; Figure 5 is a schematic structural diagram of the blast furnace blower provided by the present utility model; Figure 6 is a schematic structural diagram of the filter plate provided by the present utility model. The hot blast stove rapid pressurization device includes: a bottom plate 1;

[0033] A hot blast stove 2, the hot blast stove 2 is fixedly connected to the top of the bottom plate 1, a cold air pipe 12 is installed on the outer surface of the hot blast stove 2, the other end of the cold air pipe 12 is installed with a three-way head 6, one of the outlets of the three-way head 6 is installed with a connection head 7, the other outlet of the three-way head 6 is installed with a first valve 9 through a pressurization pipe 8, the other end of the first valve 9 is installed with a pressure control valve 11 through a docking pipe 10, the other end of the pressure control valve 11 is fixedly connected with an installation pipe 24, a docking ring 15 is installed inside the pressure control valve 11, a fixing ring 26 is installed at one end of the inner wall of the pressure control valve 11 close to the docking pipe 10, the other end of the fixing ring 26 is fixedly connected with a support spring 27, the other end of the support spring 27 is fixedly connected with a movable disc 28, the other end of the movable disc 28 is respectively installed with a sealing ring 29 and a sealing plug 16, and two limiting components 25 are installed between the fixing ring 26 and the docking ring 15;

[0034] A gas supply assembly 14, the gas supply assembly 14 is fixedly connected to a position close to one side of the top of the bottom plate 1, a delivery pipe 13 is installed at the outlet of the gas supply assembly 14, the other end of the delivery pipe 13 is installed with a second valve 20, an installation frame 19 is installed on the top of the bottom plate 1, a pressure control tank 21 is installed on the top of the installation frame 19, and an electronic pressure gauge 23 is installed on the top position of the outer surface of the pressure control tank 21 through an installation base 22;

[0035] The connector 7 is connected through a pipeline and a tee joint 6, and a valve can be installed in the middle of the pipeline if necessary. The connector 7 is connected to the cold air main pipe. The other end of the installation pipe 24 is connected to one end of the pressure control tank 21. Both ends of the docking ring 15 are provided with openings for inserting the sealing plug 16. The sealing ring 29 is located at a position near the outer surface of the other end of the movable disk 28. The sealing ring 29 contacts the docking ring 15 to increase the sealing performance. The sealing plug 16 is inserted into the opening of the docking ring 15. The limiting component 25 includes a sliding rod and a sliding block. The sliding block slides on the outer surface of the sliding rod, and the sliding block is connected to the outer surface of the movable disk 28, which can increase the stability of the movement of the movable disk 28. The other end of the second valve 20 is connected to the other end of the pressure control tank 21 through a pipeline. The data collected by the electronic pressure gauge 23 can be summarized into the controller, and then the controller controls the closing and opening of the second valve 20 and the air supply component 14.

[0036] A control box 4 with a box door 5 is installed on the top of the bottom plate 1, and an operation screen 3 is installed on the front of the control box 4;

[0037] A power switch and a controller for controlling the operation of the equipment are installed inside the control box 4. A lock is provided on the box door 5, and the operation screen 3 can set the movement parameters of the equipment on the bottom plate 1.

[0038] A filtering component 17 is installed on the top of the bottom plate 1. The filtering component 17 includes a filtering box 171, and an air inlet pipe 18 is installed on the back of the filtering box 171;

[0039] The air inlet pipe 18 is conical, which can increase the air intake. A lid is provided on the top of the filtering box 171.

[0040] Two groups of mounting buckles 172 are installed inside the filtering box 171, and a filter plate 173 is installed between each group of mounting buckles 172;

[0041] Two mounting buckles 172 form a group, and the filtering precision of the filter plates 173 is different.

[0042] The air supply component 14 includes a protective shell 141, and air vent holes 142 are provided on both sides of the protective shell 141;

[0043] The air vent holes 142 are for auxiliary ventilation, and an opening is provided at the position where the pipeline needs to pass through the protective shell 141.

[0044] A blast furnace blower 143 is installed inside the protective shell 141, and a suction pipe 144 is installed at the inlet of the blast furnace blower 143;

[0045] The other end of the suction pipe 144 is connected to the front of the filtering box 171, so as to suck the filtered air. The outlet of the blast furnace blower 143 is connected to the delivery pipe 13.

[0046] The working principle of the rapid pressure charging device for the hot blast stove provided by the present utility model is as follows:

[0047] On the top of the bottom plate 1, a pressure control tank 21 with an electronic pressure gauge 23 is installed through a mounting frame 19. The pressure value inside the pressure control tank 21 can be monitored in real time through the electronic pressure gauge 23. Then, the pressure control valve 11 is connected to the pressure control tank 21 through a mounting pipe 24. The pressure value in the hot blast stove 2 can be balanced through the mutual cooperation of the movable disk 28 and the docking ring 15 inside the pressure control tank 21. The pressure control tank 21 and the pressure control valve 11 are connected to the cold air pipe 12 and the air supply assembly 14 through a docking pipe 10 with a first valve 9, a second valve 20, and a delivery pipe 13. In actual use, first start the air supply assembly 14 to inject high-pressure cold air into the pressure control tank 21. During this process, the high-pressure gas will push the sealing plug 16 and the movable disk 28 to compress the support spring 27, so that the high-pressure air can enter the docking pipe 10. Then, open the first valve 9 to inject the high-pressure gas into the hot blast stove 2. During the movement of the movable disk 28, the limit assembly 25 allows it to move only left and right without shaking. When the pressure inside the hot blast stove 2 and the pressure value inside the pressure control tank 21 reach a certain value, the movable disk 28 will be pushed back to seal the opening of the docking ring 15 with the sealing plug 16. During this process, only need to close the second valve 20 and stop the air supply by closing the air supply assembly 14 to keep the pressure inside the hot blast stove 2 and the pressure inside the pressure control tank 21 in balance. If the pressure inside the hot blast stove 2 becomes smaller, the gas inside the pressure control tank 21 will enter the hot blast stove 2 along with the separation of the sealing plug 16 and the docking ring 15. During this process, when the electronic pressure gauge 23 monitors that the pressure inside the pressure control tank 21 decreases, it will open the air supply assembly 14 and the second valve 20 to deliver the air inside the pressure control tank 21 to the corresponding pressure value. After the replenishment is completed, only need to close the second valve 20 and the air supply assembly 14.

[0048] Compared with the related technology, the rapid pressure charging device for the hot blast stove provided by the present utility model has the following beneficial effects:

[0049] In order to increase the control of the pressure value during the rapid pressurization of the hot blast stove 2, a pressure control tank 21 with an electronic pressure gauge 23 is installed on the top of the bottom plate 1 through a mounting bracket 19. The pressure value inside the pressure control tank 21 can be monitored in real time through the electronic pressure gauge 23. Then, the pressure control valve 11 is connected to the pressure control tank 21 through a mounting pipe 24. The movable disk 28 inside the pressure control tank 21 and the docking ring 15 cooperate with each other to balance the pressure value in the hot blast stove 2. The pressure control tank 21 and the pressure control valve 11 are connected to the cold air pipe 12 and the air supply assembly 14 through a docking pipe 10 with a first valve 9, a second valve 20 and a delivery pipe 13. Through this structure, while realizing rapid pressurization through the mutual cooperation of the pressure control valve 11 and the pressure control tank 21, the pressure inside the hot blast stove 2 can also be balanced, increasing the stability of the pressure inside the hot blast stove 2 and being beneficial to improving the working stability of the hot blast stove 2.

[0050] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. A rapid pressure charging device for a hot blast stove, characterized in that, Including: Base plate; Hot blast stove, the hot blast stove is fixedly connected to the top of the base plate, a cold air pipe is installed on the outer surface of the hot blast stove, the other end of the cold air pipe is installed with a tee, one outlet of the tee is installed with a connector, the other outlet of the tee is installed with a first valve through a pressurizing pipe, the other end of the first valve is installed with a pressure control valve through a docking pipe, the other end of the pressure control valve is fixedly connected with an installation pipe, a docking ring is installed inside the pressure control valve, a fixing ring is installed at one end of the inner wall of the pressure control valve close to the docking pipe, the other end of the fixing ring is fixedly connected with a support spring, the other end of the support spring is fixedly connected with a movable disc, a sealing ring and a sealing plug are respectively installed at the other end of the movable disc, and two limiting components are installed between the fixing ring and the docking ring; Gas supply component, the gas supply component is fixedly connected to a position close to one side of the top of the base plate, a delivery pipe is installed at the outlet of the gas supply component, the other end of the delivery pipe is installed with a second valve, an installation frame is installed on the top of the base plate, a pressure control tank is installed on the top of the installation frame, and an electronic pressure gauge is installed on the outer surface of the pressure control tank at the top through an installation base.

2. The hot blast stove rapid pressure charging device according to claim 1, characterized in that, A control box with a box door is installed on the top of the base plate, and an operation screen is installed on the front of the control box.

3. The hot blast stove rapid pressure charging device according to claim 1, characterized in that, A filtering component is installed on the top of the base plate, the filtering component includes a filtering box, and an air inlet pipe is installed on the back of the filtering box.

4. The hot blast stove rapid pressure charging device according to claim 3, characterized in that, Two groups of installation buckles are installed inside the filtering box, and filtering plates are installed between each group of installation buckles.

5. The hot blast stove rapid pressure charging device according to claim 1, characterized in that, The gas supply component includes a protective shell, and air permeable holes are formed on both sides of the protective shell.

6. The hot blast stove rapid pressurization device according to claim 5, characterized in that, A blast furnace blower is installed inside the protective shell, and a suction pipe is installed at the inlet of the blast furnace blower.

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