Quick opening device for cut-off flashboard

Abstract

The invention relates to the technical field of flue gas emission, and provides a cut-off flashboard quick opening device which comprises a kiln body, a flashboard frame is arranged on the kiln body, a flashboard body is slidably connected into the flashboard frame, a pair of stand columns is arranged at the top of the kiln body, and the tops of the pair of stand columns are jointly connected with a cross beam. A plurality of transversely-arranged fixed pulleys are arranged at the bottom of the cross beam, and a steel wire rope is connected to the top of the middle of the flashboard body. The gate overcomes the defects in the prior art and is reasonable in design and compact in structure, under the emergency condition, a hydraulic energy accumulator valve is screwed, nitrogen rapidly enters a hydraulic cylinder to push a piston rod, a labor-saving pulley block composed of a movable pulley and a fixed pulley to amplify output force, the gate body is rapidly opened, and the opening mode is safe, reliable, convenient and rapid. When the flashboard body is lifted to a full-open position, the lifting hook hooks the clamping column under the support of the elastic telescopic rod, accidental rotation and separation are prevented, the flashboard is locked stably, and the safety of equipment and personnel is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flue gas emission, in particular to a quick opening device for a cut-off damper. BACKGROUND

[0002] With the increasingly stringent national environmental protection policy, waste gas generated in the industrial production process of glass melting furnace and the like must be purified through a flue gas treatment system and can be discharged only after ensuring that the emission indicators fully meet the national environmental protection standards. Therefore, under the normal operating condition of the flue gas emission system of the glass melting furnace, the movable damper needs to be kept in a fully closed state to force all raw flue gas to enter the waste gas treatment system for deep purification. However, when the flue gas treatment system suddenly fails or encounters an emergency such as power failure, the movable damper needs to be immediately opened to make the waste gas directly discharged through a bypass flue, so as to avoid abnormal pressure or temperature loss of control in the melting furnace due to flue gas retention.

[0003] A quick opening damper door for underground flue is disclosed in Chinese patent application No. CN202110490630.1, which comprises a flue body, a fixed baffle, a movable damper and a hydraulic cylinder arranged inside the flue body, the fixed baffle is arranged above the movable damper, the movable damper is provided with pull-out tracks on both sides, the movable damper is adapted to the pull-out tracks, the pull-out tracks are wide at the top and narrow at the bottom, a damper opening device is arranged on the movable damper, the damper opening device comprises a counterweight, a cylinder, an electric hoist, a steel wire rope and a steel frame, and the electric hoist is used for suspending on the steel frame.

[0004] The quick opening damper door adopts a counterweight unhooking type design, and the counterweight is automatically unhooked to lift the movable damper to the highest position by the cylinder when power failure occurs. However, the following technical defects still exist:

[0005] 1. The conventional cylinder cannot reliably act under the power failure condition, resulting in failure of the emergency mechanism;

[0006] 2. There is an impact load at the moment of unhooking of the counterweight, which easily causes vibration of the damper and even structural damage;

[0007] 3. The freely falling counterweight may also cause secondary safety hazards;

[0008] Therefore, we propose a quick opening device for a cut-off damper. SUMMARY

[0009] In view of the deficiencies of the prior art, the present application provides a quick opening device for a cut-off damper, which overcomes the deficiencies of the prior art, is reasonable in design, compact in structure and solves the problem of how to safely and quickly open the movable damper when the flue gas treatment system suddenly fails or encounters an emergency such as power failure.

[0010] In order to achieve the above object, the present application is realized by the following technical scheme: A kind of cut-off damper quick opening device, including kiln body, the kiln body is equipped with damper frame, the damper frame is slidably connected with damper body, the top of the kiln body is equipped with a pair of stand, a pair of the top of the stand is connected with crossbeam, the bottom of the crossbeam is equipped with several horizontal arrangement's fixed pulley, the top of the middle part of the damper body is connected with steel wire rope, the other end of the steel wire rope is sequentially passed through several fixed pulleys, and finally connected to the crossbeam, the steel wire rope is equipped with movable pulley, the bottom of the movable pulley is connected with the piston rod of hydraulic cylinder, the hydraulic cylinder is connected with hydraulic accumulator by pipeline, the hydraulic accumulator is filled with nitrogen, to enter the hydraulic cylinder when opening valve nitrogen by pipeline.

[0011] Preferably, the top of the middle part of the damper body is connected with the second steel wire rope, the other end of the second steel wire rope is sequentially passed through several fixed pulleys, and finally connected with the hook assembly, one side of the kiln body is equipped with guardrail, the top of the guardrail is equipped with the clamping column matched with the hook assembly, to limit the hook assembly after downward movement.

[0012] Preferably, the hook assembly includes a housing connected to the steel wire rope, a hook connected to the housing, a bearing of the hook extending through both sides of the housing and connected to a limit block, an end of the limit block having a slot, and a rotating block rotatably connected to both sides of the housing, the rotating block having an elastic telescopic rod rotatably connected to the slot to support the limit block.

[0013] Preferably, the two limit blocks are connected to a connecting frame, the top of the guardrail has a push-down rod matched with the connecting frame to prevent the connecting frame from moving downward, and the stand has a push-up rod matched with the connecting frame to prevent the connecting frame from moving upward.

[0014] Preferably, the top of the hook assembly has a guide rod extending through the crossbeam, and the guide rod is vertically arranged.

[0015] Preferably, the bottom of the movable pulley has a counterweight.

[0016] Preferably, the top of the hook assembly has a counterweight.

[0017] The present application provides a cut-off damper quick opening device, which has the following advantages:

[0018] 1. In an emergency, twist the hydraulic accumulator valve, nitrogen quickly enters the hydraulic cylinder to push the piston rod, the force output is amplified by the force-saving pulley set composed of the movable pulley and the fixed pulley, so that the damper body is quickly opened, and the opening mode is safe, reliable, convenient and fast.

[0019] 2. When the damper body is lifted to the fully open position, the hook hooks the clamping column under the support of the elastic telescopic rod, prevents accidental rotation and disengagement, ensures stable locking of the damper, and ensures safety of the equipment and personnel.

[0020] 3. When unlocked, the damper body is first moved upward and then downward by the hydraulic cylinder, the hook is offset from the clamping column and the clamping column is reset by the push rod and the upper push rod, the entire unhooking process does not require manual operation, and the safety of use is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0022] Figure 2 It is a schematic diagram of the cross section of the kiln body structure of the present application;

[0023] Figure 3 It is a schematic diagram of the structure of the hook assembly of the present application;

[0024] Figure 4 It is a schematic diagram of the structure of the hook assembly of the present application.

[0025] In the figure: 1, kiln body; 2, damper frame; 3, damper body; 4, vertical column; 5, cross beam; 6, fixed pulley; 7, steel wire rope; 8, movable pulley; 9, hydraulic cylinder; 10, hydraulic accumulator; 11, hook assembly; 111, housing; 112, hook; 113, limit block; 114, notch; 115, rotating block; 116, elastic telescopic rod; 117, connecting frame; 12, guardrail; 13, clamping column; 14, push rod; 15, upper push rod; 16, guide rod; 17, counterweight. DETAILED DESCRIPTION

[0026] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] Referring to the drawings Figures 1-4 A quick opening device for a truncated damper, comprising a kiln body 1, the kiln body 1 is provided with a damper frame 2, the damper frame 2 is slidably connected with a damper body 3, the damper body 3 is initially located at the bottom of the damper frame 2 and blocks the outlet of the bypass flue, the damper body 3 can move along the direction of the damper frame 2 to realize the opening and closing of the damper.

[0028] The top of the kiln body 1 is provided with a pair of columns 4, the top of the pair of columns 4 is jointly connected with a cross beam 5, the bottom of the cross beam 5 is provided with a plurality of fixed pulleys 6 arranged in a transverse direction, the middle part of the gate body 3 is connected with a steel wire rope 7 at the top, the other end of the steel wire rope 7 is sequentially wound around the plurality of fixed pulleys 6 and finally connected to the cross beam 5, the steel wire rope 7 is provided with a movable pulley 8, the bottom of the movable pulley 8 is connected with the piston rod of a hydraulic cylinder 9, the movable pulley 8 and the fixed pulley 6 form a labor-saving pulley set, the output force of the hydraulic cylinder 9 is multiplied, and the power demand of the hydraulic system is reduced.

[0029] The hydraulic cylinder 9 is connected with a hydraulic accumulator 10 through a pipeline, the hydraulic accumulator 10 is filled with nitrogen, so that when the valve is opened, the nitrogen enters the hydraulic cylinder 9 through the pipeline, when the flue gas treatment system suddenly fails or encounters an emergency such as power failure, the valve of the hydraulic accumulator 10 is screwed, at this time, the nitrogen in the hydraulic accumulator 10 rapidly enters the hydraulic cylinder 9 through the pipeline, and the piston rod of the hydraulic cylinder 9 is driven to move downward, further driving the movable pulley 8 and the steel wire rope 7 to move downward, so that the gate body 3 is quickly opened upward, and the opening mode is safe, reliable, convenient and fast.

[0030] The pressure in the hydraulic accumulator 10 needs to be maintained at a preset pressure, when the pressure in the hydraulic accumulator 10 is lower than the preset value, the pressure needs to be generated, such as introducing nitrogen into the hydraulic accumulator 10.

[0031] Further, a hydraulic station is arranged on one side of the kiln body 1, the hydraulic station is provided with an electromagnetic valve electrically connected with the hydraulic cylinder 9, the electromagnetic valve is controlled and belongs to the prior art, which will not be described in detail in the application, when the flue gas treatment system receives a fault signal and is not powered off, the electromagnetic valve is remotely controlled in the central control room to drive the hydraulic cylinder 9 to act, so as to remotely control the gate body 3.

[0032] A second steel wire rope 7 is symmetrically arranged on the top of the middle part of the gate body 3, the other end of the second steel wire rope 7 is sequentially wound around the plurality of fixed pulleys 6 and finally connected with a hook assembly 11, a guardrail 12 is welded on the side of the kiln body 1, the top of the guardrail 12 is provided with a clamping column 13 matched with the hook assembly 11, during the lifting of the gate body 3 to the fully open position, the hook assembly 11 moves downward with the steel wire rope 7 and hooks the clamping column 13, so as to lock the gate body 3 at the open position, preventing accidental falling, and ensuring the safety of the equipment and personnel.

[0033] The hook assembly 11 includes a housing 111 connected to the wire rope 7. A hook 112, which rotatably connects to a locking post 13, is rotatably connected inside the housing 111. Bearings of the hook 112 pass through both sides of the housing 111 and are connected to limit blocks 113 on both sides. A slot 114 is provided at the end of each limit block 113. Rotating blocks 115 are rotatably connected to both sides of the housing 111. An elastic telescopic rod 116 is provided on each rotating block 115. The elastic telescopic rod 116 contains a spring, and one end of the elastic telescopic rod 116 is rotatably connected to... The slot 114 provides support for the limiting block 113. When the hook assembly 11 moves downward, the bottom of the hook 112 abuts against the locking post 13 and deflects under its action. When the hook 112 moves below the locking post 13, it resets and hooks the bottom of the locking post 13 under the support of the elastic telescopic rod 116. At this time, the elastic telescopic rod 116 can provide support for the limiting block 113, preventing the hook 112 from accidentally rotating and disengaging from the locking post 13, thus ensuring the reliability of the locking.

[0034] Both limiting blocks 113 are connected to the connecting frame 117. The top of the guardrail 12 is provided with a lower push rod 14 that cooperates with the connecting frame 117 to prevent the connecting frame 117 from moving downward. The column 4 is provided with an upper push rod 15 that cooperates with the connecting frame 117 to prevent the connecting frame 117 from moving upward. When the fault is resolved and the hook assembly 11 needs to be unlocked, the gate body 3 is controlled by the hydraulic cylinder 9 to move upward again. At this time, the lower push rod 14 will push the bottom of the side wall of the connecting frame 117, so that the connecting frame 117 deflects upward. At this time, the limiting block 113 will rotate with it and drive the hook 112 to rotate counterclockwise, so that the hook 112... When the position of the hook 112 deviates from the locking post 13, the elastic telescopic rod 116 will rotate with the limit block 113 and provide a supporting force after its rotation, so that the hook 112 will not automatically return to the initial position. Then, the hydraulic cylinder 9 controls the gate body 3 to move downward. At this time, the hook assembly 11 moves upward. The locking post 13 will not hinder the movement of the hook assembly 11. When the hook assembly 11 moves upward to a certain position, the upper push rod 15 will push the top of the connecting frame 117 on one side, causing it to deflect downward. At this time, the position of the hook 112 will be reset, which is convenient for the next use. The unhooking process does not require manual operation, which greatly improves the safety of use.

[0035] To ensure that the hook assembly 11 can accurately engage with the locking post 13, a guide rod 16 is provided on the top of the hook assembly 11, which passes through the crossbeam 5. The guide rod 16 is set in the vertical direction and can provide precise guidance for the up and down movement of the hook assembly 11, preventing it from deviating during the movement and improving the operating accuracy and reliability of the entire device.

[0036] The bottom of the movable pulley 8 is equipped with a counterweight 17. The counterweight 17 can balance the weight of the gate body 3 to a certain extent, reduce the burden on the hydraulic system, and make it easier for the hydraulic cylinder 9 to push the gate body 3 to open.

[0037] The top of the hook assembly 11 is provided with a counterweight 17, which can not only balance the weight of the gate body 3 to a certain extent, but also ensure that the hook assembly 11 has a downward movement tendency so that it can smoothly hook the locking post 13 and ensure the reliability of the locking action.

[0038] Working principle: Initially, the gate body 3 is blocked at the bypass flue outlet. When the gate needs to be opened urgently, the valve of the hydraulic accumulator 10 is turned, and the nitrogen inside quickly enters the hydraulic cylinder 9, pushing the piston rod to drive the pulley 8 to move downward. Through the traction of the wire rope 7, the gate body 3 is quickly opened upward. If the power is not cut off and a fault signal is received from the flue gas treatment system, the hydraulic station solenoid valve can also be remotely controlled in the central control room to make the hydraulic cylinder 9 open the gate.

[0039] During the process of raising the gate body 3 to the fully open position, the hook assembly 11 moves down with the second wire rope 7. The hook 112 will first abut against the locking post 13 and then deflect. After passing the locking post 13, it will reset and hook the locking post 13 under the support of the elastic telescopic rod 116 to prevent the hook 112 from rotating accidentally and lock the gate body 3.

[0040] When unlocking, the hydraulic cylinder 9 first controls the gate body 3 to move upward, the lower push rod 14 pushes the connecting frame 117 to make the hook 112 deviate from below the locking post 13, then controls the gate body 3 to move downward, the hook assembly 11 to move upward, and the upper push rod 15 to reset the hook 112. The unhooking process does not require manual operation.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A quick-opening device for a shut-off gate, comprising a kiln body (1), wherein a gate frame (2) is provided on the kiln body (1), and a gate body (3) is slidably connected within the gate frame (2), characterized in that: The top of the kiln body (1) is provided with a pair of columns (4), and the top of the pair of columns (4) is connected to a crossbeam (5). The bottom of the crossbeam (5) is provided with several horizontally arranged fixed pulleys (6). The top of the middle part of the gate body (3) is connected with a wire rope (7). The other end of the wire rope (7) passes around several fixed pulleys (6) in sequence and is finally connected to the crossbeam (5). The wire rope (7) is provided with a movable pulley (8). The bottom of the movable pulley (8) is connected to the piston rod of the hydraulic cylinder (9). The hydraulic cylinder (9) is connected to the hydraulic accumulator (10) through a pipe. The hydraulic accumulator (10) is filled with nitrogen so that when the valve is opened, the nitrogen enters the hydraulic cylinder (9) through the pipe.

2. The quick-opening device for a cut-off gate as described in claim 1, characterized in that: The top of the middle part of the gate body (3) is connected to a second steel wire rope (7). The other end of the second steel wire rope (7) passes around several fixed pulleys (6) in sequence and is finally connected to a hook assembly (11). A guardrail (12) is provided on one side of the kiln body (1). The top of the guardrail (12) is provided with a locking post (13) that cooperates with the hook assembly (11) to limit the hook assembly (11) after it moves downward.

3. The quick-opening device for a cut-off gate as described in claim 2, characterized in that: The hook assembly (11) includes a housing (111) connected to the wire rope (7). A hook (112) that rotatably connects to the housing (111) and engages with the locking post (13) is rotatably connected inside the housing (111). The bearing of the hook (112) passes through both sides of the housing (111) and is connected to a limiting block (113). A slot (114) is provided at the end of the limiting block (113). Rotating blocks (115) are rotatably connected to both sides of the housing (111). An elastic telescopic rod (116) is provided on the rotating block (115). One end of the elastic telescopic rod (116) is rotatably connected inside the slot (114) to support the limiting block (113).

4. The quick-opening device for a cut-off gate as described in claim 3, characterized in that: The limiting blocks (113) on both sides are connected to the connecting frame (117). The top of the guardrail (12) is provided with a lower push rod (14) that cooperates with the connecting frame (117) to prevent the connecting frame (117) from moving downward. The column (4) is provided with an upper push rod (15) that cooperates with the connecting frame (117) to prevent the connecting frame (117) from moving upward.

5. A quick-opening device for a cut-off gate as described in any one of claims 2-4, characterized in that: The top of the hook assembly (11) is provided with a guide rod (16) that passes through the crossbeam (5), and the guide rod (16) is arranged in the vertical direction.

6. The quick-opening device for a cut-off gate as described in claim 1, characterized in that: The bottom of the movable pulley (8) is provided with a counterweight (17).

7. The quick-opening device for a cut-off gate as described in claim 2, characterized in that: The hook assembly (11) is provided with a counterweight (17) on top.

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