A micro-negative pressure ignition partition control device

Abstract

The utility model belongs to sintering process micro negative pressure ignition technical field, concretely relates to a kind of micro negative pressure ignition zoning control device, comprising: valve body, split type sealing mechanism and synchronous drive mechanism.Split type sealing mechanism is fixedly arranged in valve body, and split type sealing mechanism includes fixed valve flap frame and multiple valve flaps, and fixed valve flap frame is fixedly connected with the inner wall of valve body, multiple ventilation holes are opened in fixed valve flap frame, multiple valve flaps are respectively slidably assembled in multiple ventilation holes, and fixed valve flap frame and multiple valve flaps cooperate to form closed valve plate.Synchronous drive mechanism is fixedly arranged on the outside of valve body, and synchronous drive mechanism includes drive cylinder and pneumatic control assembly.The micro negative pressure ignition zoning control device disclosed by the utility model can fine tune the ventilation volume of valve body according to actual conditions by setting split type sealing mechanism and synchronous drive mechanism, improve the convenience of adjusting the ventilation volume of valve body, and ensure the ignition control effect.

Description

Technical Field

[0001] This utility model belongs to the field of micro negative pressure ignition technology in sintering process, specifically relating to a micro negative pressure ignition zone control device. Background Technology

[0002] The micro-negative pressure ignition zone control device is a type of automated control device applied in sinter production. It primarily addresses quality issues caused by insufficient heat in the surface layer of sinter by adjusting the furnace negative pressure and airflow distribution. It typically consists of valve assemblies, a drive motor, a transmission mechanism, and a PLC integrated controller. For example, patent CN110529610A discloses a negative pressure ignition automated zone control device for a sintering machine. The valve in this device includes a valve body, a fixed valve disc, a rotating shaft, and a movable valve disc. The valve body is a frame structure with openings at both ends. The edge of the fixed valve disc is radially fixed to the inner wall of the valve body, and the horizontal axis of the fixed valve disc... The cross-sectional length accounts for 10% to 90% of the cross-sectional length of the internal cavity of the frame; the two ends of the rotating shaft are rotatably connected to the inner wall of the valve body, and one end extends out of the valve body and is connected to the drive unit used to drive the rotating shaft to rotate; one side axial edge of the rotating shaft is in contact with the non-connected edge of the fixed valve disc; one side edge of the movable valve disc is fixed to the other side axial edge of the rotating shaft, and the other edges of the movable valve disc are in contact with the inner wall of the frame; and this valve is applied to the sintering machine micro negative pressure ignition automatic zone control device and system, and is controlled by a drive motor, transmission mechanism, PLC integrated computer and industrial control computer. It is simple to operate, convenient to adjust and has high combustion efficiency.

[0003] However, as can be seen from the specification and accompanying drawings, although the valve assembly in this application is driven by a drive motor and a transmission mechanism, and controlled by a PLC integrated computer and an industrial control computer, the valve disc in the valve assembly is still an integrated unit. It cannot be finely adjusted according to actual needs, and therefore cannot be adaptively adjusted to negative pressure, resulting in poor ignition performance.

[0004] Therefore, in order to address the above-mentioned technical problems, it is necessary to provide a micro-negative pressure ignition zone control device.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to provide a micro-negative pressure ignition zone control device, which can finely adjust the valve disc according to the actual situation, thereby improving the ignition effect.

[0007] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:

[0008] A micro-negative pressure ignition zone control device includes: a valve body, a split-type sealing mechanism, and a synchronous drive mechanism.

[0009] The split-type sealing mechanism is fixedly installed in the valve body. The split-type sealing mechanism includes a fixed valve disc frame and multiple valve discs. The fixed valve disc frame is fixedly connected to the inner wall of the valve body. Multiple ventilation holes are opened on the fixed valve disc frame. The multiple valve discs are slidably assembled in the multiple ventilation holes. The fixed valve disc frame and the multiple valve discs cooperate to form a sealing valve plate.

[0010] The synchronous drive mechanism is fixedly installed on the outside of the valve body. The synchronous drive mechanism includes a drive cylinder and a pneumatic control component. The drive cylinder is fixedly installed on the outside of the valve body. Multiple pneumatic chambers are opened inside the drive cylinder. Multiple valve discs are slidably installed in the pneumatic chambers. The pneumatic control component is installed on the outside of the drive cylinder and is used to deliver compressed gas into the pneumatic chambers to drive the valve discs to slide.

[0011] In one or more embodiments of this utility model, the valve body is a frame structure with openings at both ends, and flanges are fixedly connected to both ends of the valve body. The use of flanges improves the ease of assembly of the valve body.

[0012] In one or more embodiments of this utility model, a piston plate is slidably disposed within each of the plurality of pneumatic chambers. The piston plate is fixedly connected to one end of the valve disc located within the pneumatic chamber, and the piston plate divides the pneumatic chamber into an upper extension chamber and a lower retraction chamber. By supplying air into the lower retraction chamber, the piston plate, under the action of air pressure, drives the valve disc to rise, retract, and reset, thereby enabling control of the opening and closing state of the ventilation hole.

[0013] In one or more embodiments of this utility model, a return spring is provided in each of the plurality of pneumatic chambers, and the two ends of the return spring are fixedly connected to the drive cylinder and the piston plate, respectively. The return spring serves to limit the movement of the piston plate and support its return.

[0014] In one or more embodiments of this utility model, a plurality of Z-shaped exhaust channels are provided inside the drive cylinder. One end of each of the Z-shaped exhaust channels is connected to an upper protruding cavity located on the side, and the other end of each of the Z-shaped exhaust channels is connected to a lower contracting cavity located in the middle. By providing a plurality of Z-shaped exhaust channels, the lower contracting cavity located in the middle of the drive cylinder and the upper protruding cavity located on the side are connected.

[0015] In one or more embodiments of this utility model, the pneumatic control assembly includes a pair of control air cylinders and a pair of compression piston blocks. The pair of control air cylinders are respectively fixedly disposed on both sides of the drive cylinder, and the pair of compression piston blocks are respectively slidably disposed within the pair of control air cylinders. The lower bottom surface of the compression piston block and the control air cylinder cooperate to form a compression exhaust chamber. By controlling the compression piston blocks to compress the compression exhaust chamber, the air in the compression exhaust chamber is transported along the guide air pipe to the lower contraction chamber, thereby resetting the valve disc.

[0016] In one or more embodiments of this utility model, a connecting pipe is provided below the pair of control air cylinders, and the two ends of the connecting pipe are respectively connected to the compression exhaust chamber and the lower contraction chamber. The connecting pipe serves to connect the compression exhaust chamber and the lower contraction chamber.

[0017] In one or more embodiments of this utility model, the pneumatic control assembly further includes a pair of piston rods and a synchronous drive plate. The bottom of the piston rods is fixedly connected to the upper end face of the compression piston block and slidably connected to the control air cylinder. The movement of the compression piston block is controlled by controlling the rising and falling of the piston rods. The synchronous drive plate is fixedly connected to the end of the pair of piston rods located outside the control air cylinder. The synchronous movement of the pair of piston rods is controlled by controlling the rising and falling movement of the synchronous drive plate.

[0018] In one or more embodiments of this utility model, the pneumatic control assembly further includes a lead screw, which passes through the synchronous drive plate and is threadedly connected to the synchronous drive plate. By controlling the rotation of the lead screw, the synchronous drive plate can move up and down under the action of the thread.

[0019] In one or more embodiments of this utility model, the pneumatic control assembly further includes an assembly bracket and a drive stepper motor. The assembly bracket is fixedly disposed on the outside of the drive cylinder. The assembly bracket serves to assemble and fix the drive stepper motor. The drive stepper motor is fixedly disposed on the top of the assembly bracket, and the output shaft of the drive stepper motor is fixedly connected to a lead screw. The lead screw is rotated by controlling the operation of the drive stepper motor.

[0020] Compared with the prior art, the micro negative pressure ignition zone control device disclosed in this utility model, by setting a split-type sealing mechanism and a synchronous drive mechanism, can finely adjust the ventilation volume of the valve body according to the actual situation, which improves the convenience of adjusting the ventilation volume of the valve body and ensures the ignition control effect. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of a micro-negative pressure ignition zone control device in one embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the closed state portion of the micro negative pressure ignition zone control device in one embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the open state portion of the micro negative pressure ignition zone control device in one embodiment of the present invention;

[0025] Figure 4 This is a partial front sectional view of the micro-negative pressure ignition zone control device in one embodiment of the present invention;

[0026] Figure 5 for Figure 4 Schematic diagram of the structure at point A in the middle;

[0027] Figure 6 This is a partial structural side sectional view of the micro-negative pressure ignition zone control device in one embodiment of the present invention;

[0028] Figure 7 for Figure 6 Schematic diagram of the structure at point B.

[0029] Explanation of key figure labels:

[0030] 1-Valve body, 2-Split-type sealing mechanism, 201-Fixed valve disc bracket, 202-Valve disc, 3-Synchronous drive mechanism, 301-Drive cylinder, 302-Piston plate, 303-Reset spring, 304-Z-shaped exhaust channel, 305-Control air cylinder, 306-Compression piston block, 307-Conducting air pipe, 308-Piston rod, 309-Synchronous drive plate, 310-Screw screw, 311-Assembly bracket, 312-Drive stepper motor, 4-Flange. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0032] like Figures 1 to 7 As shown, the micro-negative pressure ignition zone control device in one embodiment of this utility model includes: a valve body 1, a split-type sealing mechanism 2, and a synchronous drive mechanism 3. The valve body 1 is a frame structure with openings at both ends. In practical applications, the split-type sealing mechanism 2 can be finely adjusted through the synchronous drive mechanism 3 according to the actual situation, which improves the flexibility of adjusting the ventilation volume of the valve body 1 and ensures the ignition effect.

[0033] Specifically, the micro negative pressure ignition zone control device also includes a PLC integrated computer and an industrial control computer, which can drive and control the synchronous drive mechanism 3, ensuring the automated control effect of the micro negative pressure ignition zone control device.

[0034] like Figures 1 to 3 As shown, flanges 4 are fixedly connected to both ends of the valve body 1. The flanges 4 improve the ease of assembly of the valve body 1.

[0035] like Figures 2 to 4 As shown, the split-type sealing mechanism 2 is fixedly installed inside the valve body 1. The split-type sealing mechanism 2 includes a fixed valve disc holder 201 and multiple valve discs 202. The fixed valve disc holder 201 is fixedly connected to the inner wall of the valve body 1. The fixed valve disc holder 201 is used to limit the assembly of the multiple valve discs 202.

[0036] Specifically, the fixed valve disc bracket 201 has multiple ventilation holes. These ventilation holes allow ventilation to be provided to the valve body 1.

[0037] like Figures 2 to 4 As shown, multiple valve discs 202 are slidably assembled in multiple ventilation holes, and the fixed valve disc frame 201 and the multiple valve discs 202 cooperate to form a closed valve plate. By independently adjusting the multiple valve discs 202, the ventilation volume of the fixed valve disc frame 201 can be finely adjusted, thereby ensuring the ventilation effect of the valve body 1.

[0038] like Figures 4 to 7 As shown, the synchronous drive mechanism 3 is fixedly installed on the outside of the valve body 1. The synchronous drive mechanism 3 includes a drive cylinder 301 and a pneumatic control assembly. The pneumatic control assembly supplies gas to the drive cylinder 301, thereby enabling the lifting and lowering drive control of the piston plate 302.

[0039] like Figures 2 to 3 As shown, the drive cylinder 301 is fixedly mounted on the outside of the valve body 1. Multiple pneumatic chambers are formed inside the drive cylinder 301, and multiple valve discs 202 are slidably disposed within each pneumatic chamber. The valve discs 202 are moved up and down by controlling the supply of air into the pneumatic chambers.

[0040] like Figures 6 to 7 As shown, piston plates 302 are slidably disposed within multiple pneumatic chambers. The piston plates 302 are fixedly connected to one end of the valve disc 202 located within the pneumatic chamber, dividing the pneumatic chamber into an upper extension chamber and a lower retraction chamber. By supplying air into the lower retraction chamber, the piston plates 302, under air pressure, drive the valve disc 202 to rise, retract, and reset, thereby controlling the opening and closing state of the ventilation opening.

[0041] like Figures 4 to 7 As shown, multiple pneumatic chambers are each equipped with a return spring 303, and both ends of the return spring 303 are fixedly connected to the drive cylinder 301 and the piston plate 302, respectively. The return spring 303 serves to limit the movement of the piston plate 302 and support its return.

[0042] like Figures 4 to 5 As shown, the drive cylinder 301 has several Z-shaped exhaust channels 304. One end of each Z-shaped exhaust channel 304 is connected to an upper protruding cavity located on the side, and the other end of each Z-shaped exhaust channel 304 is connected to a lower retracting cavity located in the middle. The Z-shaped exhaust channels 304 connect the lower retracting cavity in the middle of the drive cylinder 301 with the upper protruding cavity located on the side.

[0043] like Figures 4 to 5 As shown, the pneumatic control assembly is located outside the drive cylinder 301 and is used to deliver compressed gas into the pneumatic chamber to drive the valve disc 202 to slide. The pneumatic control assembly includes a pair of control cylinders 305 and a pair of compression piston blocks 306. The pair of control cylinders 305 are fixedly installed on both sides of the drive cylinder 301, and the pair of compression piston blocks 306 are slidably installed inside the pair of control cylinders 305. The lower bottom surface of the compression piston block 306 and the control cylinder 305 cooperate to form a compression exhaust chamber. By controlling the compression piston blocks 306 to compress the compression exhaust chamber, the air in the compression exhaust chamber is delivered to the lower contraction chamber along the guide air pipe 307, thereby resetting the valve disc 202.

[0044] like Figures 4 to 5 As shown, a connecting pipe 307 is provided below a pair of control air cylinders 305. The two ends of the connecting pipe 307 are connected to the compression exhaust chamber and the lower contraction chamber, respectively. The connecting pipe 307 serves to connect the compression exhaust chamber and the lower contraction chamber.

[0045] like Figures 4 to 5 As shown, the pneumatic control assembly also includes a pair of piston rods 308 and a synchronous drive plate 309. The bottom of the piston rods 308 is fixedly connected to the upper end face of a pair of compression piston blocks 306, and the piston rods 308 are slidably connected to the control air cylinder 305. The movement of the compression piston blocks 306 is controlled by controlling the rise and fall of the piston rods 308.

[0046] like Figures 4 to 5 As shown, the synchronous drive plate 309 is fixedly connected to one end of a pair of piston rods 308 located outside the control cylinder 305. The synchronous movement of the pair of piston rods 308 is controlled by controlling the lifting and lowering movement of the synchronous drive plate 309.

[0047] like Figures 4 to 5 As shown, the pneumatic control assembly also includes a lead screw 310, which passes through and is threadedly connected to the synchronous drive plate 309. By controlling the rotation of the lead screw 310, the synchronous drive plate 309 can move up and down under the action of the thread.

[0048] like Figures 4 to 5 As shown, the pneumatic control assembly also includes a mounting bracket 311 and a drive stepper motor 312. The mounting bracket 311 is fixedly mounted on the outside of the drive cylinder 301. The mounting bracket 311 serves to assemble and fix the drive stepper motor 312.

[0049] like Figures 4 to 5 As shown, the stepper motor 312 is fixedly mounted on the top of the mounting bracket 311, and the output shaft of the stepper motor 312 is fixedly connected to the lead screw 310. The lead screw 310 is rotated by controlling the operation of the stepper motor 312.

[0050] Specifically, the stepper motor 312 can be a hybrid stepper motor of model 57BYG250.

[0051] In practical use, the valve body 1 is assembled into the ventilation duct below the sintering furnace through the flange 4. The ventilation volume of the valve body 1 is controlled by the cooperation of the split sealing mechanism 2 and the synchronous drive mechanism 3, thereby adjusting the ignition effect of the sintering furnace.

[0052] During use, the valve body 1 is closed by the cooperation of the fixed valve disc bracket 201 and multiple valve discs 202. When it is necessary to adjust and control the ventilation state of the valve body 1, the clockwise rotation of the output shaft of the stepper motor 312 is controlled to drive the lead screw 310 to rotate, which in turn causes the synchronous drive plate 309 to drive a pair of piston rods 308 to descend under the action of the thread, thereby causing the compression piston block 306 to compress the exhaust chamber as the piston rods 308 descend.

[0053] Air in the compressed exhaust chamber is transported to the lower contraction chamber via the air pipe 307 under the action of the compression piston block 306. This causes the piston plate 302 to rise and reset under air pressure, thereby opening the ventilation hole of the side-mounted valve disc bracket 201. Furthermore, the descent depth of the piston rod 308 can be controlled by adjusting the rotation time of the drive stepper motor 312, thereby adjusting the compression amount in the compressed exhaust chamber and the contraction state of the valve disc 202.

[0054] In addition, when the valve disc 202 located on the side moves above the Z-shaped exhaust duct 304, the air in the lower contraction chamber is transported along the Z-shaped exhaust duct 304 to the lower contraction chamber located in the middle, thereby controlling the contraction state of the valve disc 202 located in the middle. By independently controlling the contraction state of multiple valve discs 202, the ventilation volume of the valve body 1 can be flexibly adjusted.

[0055] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0056] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A micro-negative pressure ignition zone control device, characterized in that, include: Valve body (1); A split-type sealing mechanism (2) is fixedly installed inside the valve body (1). The split-type sealing mechanism (2) includes a fixed valve frame (201) and multiple valves (202). The fixed valve frame (201) is fixedly connected to the inner wall of the valve body (1). Multiple ventilation holes are provided on the fixed valve frame (201). Multiple valves (202) are slidably assembled in the multiple ventilation holes. The fixed valve frame (201) and multiple valves (202) cooperate to form a sealing valve plate. A synchronous drive mechanism (3) is fixedly disposed on the outside of the valve body (1). The synchronous drive mechanism (3) includes a drive cylinder (301) and a pneumatic control component. The drive cylinder (301) is fixedly disposed on the outside of the valve body (1). Multiple pneumatic chambers are opened inside the drive cylinder (301). Multiple valve discs (202) are slidably disposed in the pneumatic chambers respectively. The pneumatic control component is disposed on the outside of the drive cylinder (301) and is used to deliver compressed gas into the pneumatic chamber to drive the valve discs (202) to slide.

2. The micro-negative pressure ignition zone control device according to claim 1, characterized in that, The valve body (1) is a frame structure with openings at both ends, and flanges (4) are fixedly connected to both ends of the valve body (1).

3. The micro-negative pressure ignition zone control device according to claim 1, characterized in that, A piston plate (302) is slidably disposed in each of the multiple pneumatic chambers. The piston plate (302) is fixedly connected to one end of the valve disc (202) located in the pneumatic chamber. The piston plate (302) divides the pneumatic chamber into an upper extension chamber and a lower retraction chamber.

4. The micro-negative pressure ignition zone control device according to claim 3, characterized in that, Each of the pneumatic chambers is provided with a return spring (303), and the two ends of the return spring (303) are fixedly connected to the drive cylinder (301) and the piston plate (302) respectively.

5. The micro-negative pressure ignition zone control device according to claim 3, characterized in that, The drive cylinder (301) has a plurality of Z-shaped exhaust channels (304). One end of each of the plurality of Z-shaped exhaust channels (304) is connected to an upper protruding cavity located on the side, and the other end of each of the plurality of Z-shaped exhaust channels (304) is connected to a lower contraction cavity located in the middle.

6. The micro-negative pressure ignition zone control device according to claim 3, characterized in that, The pneumatic control assembly includes a pair of control cylinders (305) and a pair of compression piston blocks (306). The pair of control cylinders (305) are fixedly disposed on both sides of the drive cylinder (301), and the pair of compression piston blocks (306) are slidably disposed inside the pair of control cylinders (305). The lower bottom surface of the compression piston block (306) and the control cylinder (305) cooperate to form a compression exhaust chamber.

7. The micro-negative pressure ignition zone control device according to claim 6, characterized in that, A guiding air pipe (307) is provided below the pair of control air cylinders (305), and the two ends of the guiding air pipe (307) are respectively connected to the compression exhaust chamber and the lower contraction chamber.

8. The micro-negative pressure ignition zone control device according to claim 6, characterized in that, The pneumatic control assembly also includes a pair of piston rods (308) and a synchronous drive plate (309). The bottom of the piston rods (308) is fixedly connected to the upper end face of the compression piston block (306), and the piston rods (308) are slidably connected to the control air cylinder (305). The synchronous drive plate (309) is fixedly connected to one end of the pair of piston rods (308) located outside the control air cylinder (305).

9. The micro-negative pressure ignition zone control device according to claim 8, characterized in that, The pneumatic control assembly also includes a lead screw (310), which passes through the synchronous drive plate (309) and is threadedly connected to the synchronous drive plate (309).

10. The micro-negative pressure ignition zone control device according to claim 9, characterized in that, The pneumatic control assembly also includes an assembly bracket (311) and a drive stepper motor (312). The assembly bracket (311) is fixedly disposed on the outside of the drive cylinder (301), and the drive stepper motor (312) is fixedly disposed on the top of the assembly bracket (311). The output shaft of the drive stepper motor (312) is fixedly connected to the lead screw (310).

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