Pore plate balance valve with adjustable resistance

Abstract

The invention relates to the technical field of balance valves, and provides a resistance-adjustable pore plate balance valve which comprises a valve body, connecting flanges are arranged on the two sides of the valve body, a sealing sleeve is arranged on the valve body, and a driving mechanism is arranged in the sealing sleeve. The driving mechanism is in driving connection with a pore plate balancing mechanism which is arranged in the valve body and is positioned on the upstream of the flowing direction of flue gas and a pressure regulating mechanism which is positioned on the downstream of the flowing direction of the flue gas through a linkage mechanism, and the pressure transmitters are arranged on the two sides of the valve body. The device has the beneficial effects that the resistance of the valve is adjusted on line at any time, airflow can be homogenized, abrasion of the device is greatly reduced, and the service life is prolonged; the device is good in sealing performance, free of smoke leakage and capable of being adjusted on line at any time.

Description

Technical Field

[0001] The invention relates to the technical field of balancing valves, and in particular to an orifice balancing valve with adjustable resistance. Background Art

[0002] In order to remove dust from flue gas, many factories are equipped with centralized dust collector systems. The centralized dust collector network is complicated and has many branch pipes. To ensure the resistance balance of each branch pipe, the conventional practice is to set regulating valves on the branch pipes and adjust the valve opening to achieve resistance balance in the entire network. Due to the large number of valves, the debugging workload is large, and the uneven airflow causes great wear on the valve plate. After long-term operation, the valves are seriously damaged, the system balance is unbalanced, and the system cannot operate normally. Summary of the invention

[0003] The present application proposes an orifice balancing valve with adjustable resistance, which can adjust the resistance in the pipeline online at any time, can make the airflow uniform, greatly reduce the wear of the device and increase the service life; the device has good sealing, does not leak smoke, can be adjusted online at any time, has a certain linkage, and has an ingenious structural design.

[0004] To this end, the present application provides an orifice balancing valve with adjustable resistance, including a valve body, connecting flanges are provided on both sides of the valve body, a sealing sleeve is provided on the valve body, a driving mechanism is provided inside the sealing sleeve, and the driving mechanism is driven by a linkage mechanism to connect an orifice balancing mechanism arranged inside the valve body and located upstream of the flue gas flow direction, and a pressure regulating mechanism located downstream of the flue gas flow direction, and also includes pressure transmitters arranged on both sides of the valve body.

[0005] By adopting the above technical solution: the connecting flange is used to connect the pipes on both sides, and the driving mechanism is used to drive the orifice balancing mechanism and the pressure regulating mechanism in a linkage manner. The orifice balancing mechanism and the pressure regulating mechanism can be driven by one driving mechanism, which has a certain linkage and a good coordination effect. The opening and closing degree of the orifice balancing mechanism can be adjusted online to balance the pressure of the pipes on both sides of the valve body. The pressure regulating mechanism can further adjust the airflow pressure to reduce the impact on the rear-end pipe, greatly reduce the wear of the pipe, and increase the service life.

[0006] Optionally, the driving mechanism includes a primary bevel gear shaft rotatably connected in a sealing sleeve, the upper end of the primary bevel gear shaft is connected to an electric handwheel after passing through the sealing sleeve, and a linkage mechanism is provided on the primary bevel gear shaft inside the valve body.

[0007] By adopting the above technical solution: when the flue gas enters the valve body, the pressure transmitter senses the flue gas pressure and pressure difference, and after determining the opening rate of the orifice balancing mechanism that needs to be adjusted according to the design, the bevel gear shaft is rotated once by the electric handwheel to drive the linkage mechanism to drive the orifice balancing mechanism and the pressure regulating mechanism to operate, and the corresponding opening rate is achieved through the indication on the electric handwheel, thereby realizing online adjustment.

[0008] Optionally, the linkage mechanism includes a driving component for driving the orifice plate balancing mechanism to move and a trigger component for driving the pressure regulating mechanism to move.

[0009] By adopting the above technical solution: the driving component is used to drive the orifice plate balancing mechanism to move, and the trigger component is used to drive the pressure regulating mechanism to move. Through the linkage mechanism, the above two mechanisms can be driven to move at the same time, with a certain degree of synergy, and the airflow pressure in the pipeline can be adjusted together.

[0010] Optionally, the driving assembly includes a first bevel gear arranged at the lower end of a primary bevel gear shaft, the first bevel gear is in a gear box, a secondary bevel gear shaft connected to a second bevel gear is also provided in the gear box, the first bevel gear is meshed with the second bevel gear, and the secondary bevel gear shaft extends out of the gear box to drive the connecting orifice plate balancing mechanism.

[0011] Optionally, the trigger assembly includes a trigger block disposed on the primary bevel gear shaft, and the trigger block drives the connection pressure regulating mechanism.

[0012] Optionally, the orifice plate balancing mechanism includes an adjusting sealing plate with a hole located inside the valve body and connected to the secondary bevel gear shaft, and a main orifice plate with a hole fixed inside the valve body.

[0013] By adopting the above technical solution: when the pressure difference between the two ends is large, after being sensed by the pressure transmitter, of course, the application should also be communicated with the master control system. The pressure transmitter senses the pressure difference signal and transmits it to the master control system. The master control system drives the electric handwheel to rotate, and the primary bevel gear shaft rotates accordingly, and the power is transmitted to the secondary bevel gear shaft through the first bevel gear and the second bevel gear. The secondary bevel gear shaft drives the adjusting sealing plate to rotate, so that the holes on the adjusting sealing plate are gradually aligned with the holes on the main orifice plate until they are fully aligned to achieve the maximum opening rate, so as to balance the pressure on both sides of the valve body.

[0014] Optionally, the pressure regulating mechanism includes a fixed ring fixed in the valve body, an adjusting ring slidably arranged on the fixed ring, a plurality of adjusting components are provided on the fixed ring, an adjusting component for adjusting the position of the adjusting component is provided on the adjusting ring, a sliding component is provided between the adjusting ring and the valve body, and a passive component cooperating with the trigger block is provided on the adjusting ring.

[0015] By adopting the above technical solution: when the airflow passes through the main orifice plate, in order to reduce its impact force, reduce the impact on the rear-end pipeline, and reduce wear, the adjusting component is driven to move by the adjusting component, so that the gap between the adjusting components gradually increases, thereby reducing the airflow pressure. The sliding component is used to provide limited support for the rotation of the adjusting ring, and the driven component is used to contact the trigger block, so as to drive the driven component to move when the bevel gear shaft rotates once.

[0016] Optionally, a mounting body is provided in the middle of the fixing ring, and multiple groups of adjustment components are rotatably installed between the mounting body and the fixing ring. The adjustment components include a rotating shaft rotatably installed between the mounting body and the fixing ring, an adjustment plate is installed on the rotating shaft, and one end of the rotating shaft away from the mounting body passes through the fixing ring.

[0017] By adopting the above technical solution: the installation body is cylindrical and can be fixedly connected by other connecting rod fixing rings.

[0018] Optionally, the adjustment component includes a bar-shaped through groove arranged on the adjusting ring, and the rotating shaft is connected to one end of the L-shaped rod after passing through the fixed ring, and the other end of the L-shaped rod is located inside the bar-shaped through groove, and the sliding component includes a limit groove arranged on the adjusting ring, and a limit rail is provided on the inner side of the valve body, and the limit rail is located in the limit groove. Since the adjusting ring only rotates in a small range, the limit groove can be partially opened on the outer peripheral side of the adjusting ring, and the adjusting ring is arranged on the outer peripheral side of the fixed ring and can rotate in a small range relative to the fixed ring.

[0019] Optionally, the actuated component includes an actuated block disposed on the adjusting ring and in contact with the trigger block, and a return spring is provided between the actuated block and the inner wall of the valve body.

[0020] By adopting the above technical solution: when the primary bevel gear shaft rotates, the trigger block contacts the driven block, driving the adjusting ring to rotate. Since one end of the L-shaped rod is in contact with the inside of the strip-shaped through groove, the L-shaped rod will swing, thereby driving the rotating shaft to rotate. The rotation of the rotating shaft drives the adjusting plate to rotate, so that the gap between each adjusting plate increases or decreases according to the size of the opening rate, thereby reducing the pressure of the rear end pipeline and reducing wear.

[0021] The working principle and beneficial effects of this application are:

[0022] 1. The connecting flange is used to connect the pipes on both sides. The driving mechanism is used to drive the orifice plate balancing mechanism and the pressure regulating mechanism in a linkage manner. The orifice plate balancing mechanism and the pressure regulating mechanism can be driven by a driving mechanism, which has a certain linkage and good coordination effect. The opening and closing degree of the orifice plate balancing mechanism can be adjusted online to balance the pressure of the pipes on both sides of the valve body. The pressure regulating mechanism can further adjust the airflow pressure, reduce the impact on the rear-end pipe, greatly reduce the wear of the pipe, and increase the service life.

[0023] 2. When the pressure difference between the two ends is large, after being sensed by the pressure transmitter, of course, this application should also be connected to the master control system for communication. The pressure transmitter senses the pressure difference signal and transmits it to the master control system. The master control system drives the electric handwheel to rotate, and the primary bevel gear shaft rotates accordingly, and transmits the power to the secondary bevel gear shaft through the first bevel gear and the second bevel gear. The secondary bevel gear shaft drives the adjusting sealing plate to rotate, so that the holes on the adjusting sealing plate are gradually aligned with the holes on the main orifice plate until they are fully aligned to achieve the maximum opening rate, so as to balance the pressure on both sides of the valve body.

[0024] 3. When the primary bevel gear shaft rotates, the actuating block contacts the actuated block, driving the adjusting ring to rotate. Since one end of the L-shaped rod is in contact with the inside of the strip groove, the L-shaped rod will swing, thereby driving the rotating shaft to rotate. The rotation of the rotating shaft drives the adjusting piece to rotate, so that the gap between each adjusting piece increases or decreases according to the size of the opening rate, thereby reducing the pressure of the rear-end pipeline and reducing wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0027] Figure 2 This is a schematic diagram of the side connection structure of the orifice plate balancing mechanism facing the flue gas flow direction of the embodiment of the present application;

[0028] Figure 3 This is a schematic structural diagram of an adjustable sealing plate according to an embodiment of the present application;

[0029] Figure 4 This is a schematic diagram of the structure of the main orifice plate of an embodiment of the present application;

[0030] Figure 5 This is a schematic diagram of the side structure of the pressure regulating mechanism of an embodiment of the present application;

[0031] Figure 6 This is a schematic diagram of the structure of the opening indicator plate according to an embodiment of the present application.

[0032] In the figure: 100, valve body; 110, connecting flange; 120, sealing sleeve; 130, limit rail; 200, driving mechanism; 210, primary bevel gear shaft; 220, electric hand wheel; 300, linkage mechanism; 310, first bevel gear; 320, second bevel gear; 330, secondary bevel gear shaft; 340, trigger block; 400, orifice plate balancing mechanism; 410, adjusting sealing plate; 420, main orifice plate; 500, pressure adjusting mechanism; 510, fixing ring; 520, adjusting ring; 530, mounting body; 540, rotating shaft; 550, adjusting sheet; 560, strip through groove; 570, L-shaped rod; 580, driven block; 590, reset spring; 600, pressure transmitter; 700, gear box. DETAILED DESCRIPTION

[0033] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figure 1-Figure 5 As shown, the present embodiment provides an orifice balancing valve with adjustable resistance, including a valve body 100, connecting flanges 110 are provided on both sides of the valve body 100, a sealing sleeve 120 is provided on the valve body 100, a driving mechanism 200 is provided in the sealing sleeve 120, and the driving mechanism 200 is driven by a linkage mechanism 300 to be connected to an orifice balancing mechanism 400 arranged inside the valve body 100 and located upstream of the flue gas flow direction, and a pressure regulating mechanism 500 located downstream of the flue gas flow direction, and also includes pressure transmitters 600 arranged on both sides of the valve body 100.

[0035] The basic principle of this embodiment is as follows: the connecting flange 110 is used to connect the pipes on both sides, and the driving mechanism 200 is used to drive the orifice balancing mechanism 400 and the pressure regulating mechanism 500 in a linkage manner. The orifice balancing mechanism 400 and the pressure regulating mechanism 500 can be driven by a driving mechanism 200 to operate, and have a certain linkage and good coordination effect. The opening and closing degree of the orifice balancing mechanism 400 can be adjusted online to balance the pressure of the pipes on both sides of the valve body 100. The pressure regulating mechanism 500 can further adjust the airflow pressure to reduce the impact on the rear-end pipe, greatly reduce the wear of the pipe, and increase the service life.

[0036] The driving mechanism 200 includes a primary bevel gear shaft 210 rotatably connected to the sealing sleeve 120. The upper end of the primary bevel gear shaft 210 passes through the sealing sleeve 120 and is connected to an electric handwheel 220. A linkage mechanism 300 is provided on the primary bevel gear shaft 210 inside the valve body 100. Of course, a sealed bearing is provided between the upper part of the sealing sleeve 120 and the primary bevel gear shaft 210.

[0037] When compressed air enters the valve body 100, the pressure transmitter 600 senses the flue gas pressure and pressure difference. After determining the aperture ratio of the orifice balancing mechanism 400 that needs to be adjusted according to the design, the bevel gear shaft 210 is rotated once by the electric handwheel 220 to drive the linkage mechanism 300 to drive the orifice balancing mechanism 400 and the pressure regulating mechanism 500 to operate. The corresponding aperture ratio is achieved through the indication on the electric handwheel 220, thereby realizing online adjustment.

[0038] The linkage mechanism 300 includes a driving component for driving the orifice plate balancing mechanism 400 and a trigger component for driving the pressure regulating mechanism 500; the driving component is used to drive the orifice plate balancing mechanism 400, and the trigger component is used to drive the pressure regulating mechanism 500. The linkage mechanism 300 can drive the above two mechanisms to move at the same time, have a certain degree of synergy, and jointly adjust the airflow pressure in the pipeline.

[0039] Specifically, the driving assembly includes a first bevel gear 310 arranged at the lower end of the primary bevel gear shaft 210, the first bevel gear 310 is in the gear box 700, and the gear box 700 is also provided with a secondary bevel gear shaft 330 connected to the second bevel gear 320, wherein the first bevel gear 310 is meshed with the second bevel gear 320, and the secondary bevel gear shaft 330 extends out of the gear box 700 and drives the connected orifice plate balancing mechanism 400.

[0040] Specifically, the trigger assembly includes a trigger block 340 disposed on the primary bevel gear shaft 210 , and the trigger block 340 drives the connection pressure adjustment mechanism 500 .

[0041] The orifice balancing mechanism 400 in this embodiment includes an adjusting sealing plate 410 with a hole connected to the secondary bevel gear shaft 330 and located inside the valve body 100, and a main orifice plate 420 with a hole fixed inside the valve body 100. The main orifice plate 420 is located at the rear side of the flue gas flow direction, and the adjusting sealing plate 410 is located at the front side of the main orifice plate 420 in the flue gas flow direction. The secondary bevel gear shaft 330 passes through the main orifice plate 420 and is connected to the adjusting sealing plate 410.

[0042] When the pressure difference between the two ends is large, after being sensed by the pressure transmitter 600, of course, the present application should also be communicated with the master control system. After the pressure transmitter 600 senses the pressure difference signal, it is transmitted to the master control system. The master control system drives the electric hand wheel 220 to rotate, and the primary bevel gear shaft 210 rotates accordingly, and the power is transmitted to the secondary bevel gear shaft 330 through the first bevel gear 310 and the second bevel gear 320. The secondary bevel gear shaft 330 drives the adjusting sealing plate 410 to rotate, so that the holes on the adjusting sealing plate 410 are gradually aligned with the holes on the main orifice plate 420 until they are fully aligned to reach the maximum opening rate, so as to balance the pressure on both sides of the valve body 100.

[0043] The pressure regulating mechanism 500 in this embodiment includes a fixed ring 510 fixed in the valve body 100, and an adjusting ring 520 slidably arranged on the fixed ring 510, wherein the fixed ring 510 is provided with a plurality of adjusting components, the adjusting ring 520 is provided with an adjusting component for adjusting the position of the adjusting component, a sliding component is provided between the adjusting ring 520 and the valve body 100, and the adjusting ring 520 is provided with a driven component cooperating with the trigger block 340.

[0044] When the airflow passes through the main orifice plate 420, in order to reduce its impact force, reduce the impact on the rear-end pipeline, and reduce wear, the adjusting component is driven to move by the adjusting component, so that the gap between the adjusting components gradually increases to reduce the airflow pressure. The sliding component is used to limit the rotation of the adjusting ring 520, and the driven component is used to contact the trigger block 340, so as to drive the driven component to move when the primary bevel gear shaft 210 rotates.

[0045] Specifically, a mounting body 530 is provided in the middle of the fixing ring 510, and multiple groups of adjustment components are rotatably installed between the mounting body 530 and the fixing ring 510. The adjustment components include a rotating shaft 540 rotatably installed between the mounting body 530 and the fixing ring 510, and an adjustment plate 550 is installed on the rotating shaft 540. One end of the rotating shaft 540 away from the mounting body 530 passes through the fixing ring 510; the mounting body 530 is cylindrical and can be fixedly connected to the fixing ring 510 through other connecting rods.

[0046] Specifically, the adjustment component includes a strip-shaped through groove 560 arranged on the adjustment ring 520, and the rotating shaft 540 is connected to one end of the L-shaped rod 570 after passing through the fixed ring 510, and the other end of the L-shaped rod 570 is located inside the strip-shaped through groove 560. The sliding component includes a limiting groove arranged on the adjustment ring 520, and a limiting rail 130 is provided on the inner side of the valve body 100, and the limiting rail 130 is located in the limiting groove. Since the adjustment ring 520 only rotates in a small range, the limiting groove can be partially opened on the outer peripheral side of the adjustment ring 520. The adjustment ring 520 is sleeved on the outer peripheral side of the fixed ring 510 and can rotate in a small range relative to the fixed ring 510.

[0047] Specifically, the actuated assembly includes an actuated block 580 disposed on the adjusting ring 520 and in contact with the trigger block 340 , and a return spring 590 is disposed between the actuated block 580 and the inner wall of the valve body 100 , wherein the return spring 590 is used to return the position of the adjusting ring 520 .

[0048] When the primary bevel gear shaft 210 rotates, the trigger block 340 contacts the driven block 580, driving the adjustment ring 520 to rotate. Since one end of the L-shaped rod 570 is in contact with the inside of the strip groove 560, the L-shaped rod 570 will swing, thereby driving the rotating shaft 540 to rotate. The rotation of the rotating shaft 540 drives the adjustment plate 550 to rotate, so that the gap between each adjustment plate 550 increases or decreases according to the size of the opening rate, thereby reducing the pressure of the rear end pipeline and reducing wear.

[0049] Reference Figure 6 An opening indicator dial can be provided on the electric hand wheel 220 to display the opening degree of the hole.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An orifice plate balancing valve with adjustable resistance, characterized in that: The invention comprises a valve body (100), connecting flanges (110) are arranged on both sides of the valve body (100), a sealing sleeve (120) is arranged on the valve body (100), a driving mechanism (200) is arranged inside the sealing sleeve (120), the driving mechanism (200) is driven by a linkage mechanism (300) to connect an orifice plate balancing mechanism (400) arranged inside the valve body (100) and located upstream of the flue gas flow direction, and a pressure regulating mechanism (500) located downstream of the flue gas flow direction, and also comprises pressure transmitters (600) arranged on both sides of the valve body (100).

2. The orifice plate balancing valve with adjustable resistance according to claim 1, characterized in that: The driving mechanism (200) comprises a primary bevel gear shaft (210) rotatably connected in a sealing sleeve (120); the upper end of the primary bevel gear shaft (210) passes through the sealing sleeve (120) and is connected to an electric hand wheel (220); and a linkage mechanism (300) is provided on the primary bevel gear shaft (210) inside the valve body (100).

3. The orifice plate balancing valve with adjustable resistance according to claim 2, characterized in that: The linkage mechanism (300) comprises a driving component for driving the orifice plate balancing mechanism (400) to operate and a triggering component for driving the pressure regulating mechanism (500) to operate.

4. The orifice plate balancing valve with adjustable resistance according to claim 3, characterized in that: The driving assembly comprises a first bevel gear (310) arranged at the lower end of a primary bevel gear shaft (210); the first bevel gear (310) is located in a gear box (700); a secondary bevel gear shaft (330) connected to a second bevel gear (320) is also provided in the gear box (700); the first bevel gear (310) is meshed with the second bevel gear (320); and the secondary bevel gear shaft (330) extends out of the gear box (700) and then drives the connected orifice plate balancing mechanism (400).

5. The orifice plate balancing valve with adjustable resistance according to claim 3, characterized in that: The trigger assembly comprises a trigger block (340) arranged on the primary bevel gear shaft (210), and the trigger block (340) drives the connection pressure adjustment mechanism (500).

6. The orifice plate balancing valve with adjustable resistance according to claim 4, characterized in that: The orifice plate balancing mechanism (400) comprises an adjusting sealing plate (410) with a hole located inside the valve body (100) and connected to the secondary bevel gear shaft (330), and a main orifice plate (420) with a hole fixed inside the valve body (100).

7. The orifice plate balancing valve with adjustable resistance according to claim 5, characterized in that: The pressure regulating mechanism (500) comprises a fixed ring (510) fixed inside the valve body (100), and an adjusting ring (520) slidably arranged on the fixed ring (510), wherein the fixed ring (510) is provided with a plurality of groups of adjusting components, and the adjusting ring (520) is provided with an adjusting component for adjusting the position of the adjusting component, a sliding component is provided between the adjusting ring (520) and the valve body (100), and the adjusting ring (520) is provided with a driven component cooperating with the trigger block (340).

8. The orifice plate balancing valve with adjustable resistance according to claim 7, characterized in that: A mounting body (530) is provided in the middle of the fixing ring (510), and a plurality of groups of adjusting components are rotatably mounted between the mounting body (530) and the fixing ring (510). The adjusting components include a rotating shaft (540) rotatably mounted between the mounting body (530) and the fixing ring (510), an adjusting sheet (550) is mounted on the rotating shaft (540), and one end of the rotating shaft (540) away from the mounting body (530) passes through the fixing ring (510).

9. The orifice plate balancing valve with adjustable resistance according to claim 8, characterized in that: The adjustment component includes a strip-shaped through groove (560) arranged on the adjustment ring (520); the rotating shaft (540) is connected to one end of an L-shaped rod (570) after passing through the fixing ring (510); the other end of the L-shaped rod (570) is located inside the strip-shaped through groove (560); the sliding component includes a limiting groove arranged on the adjustment ring (520); a limiting rail (130) is provided on the inner side of the valve body (100); and the limiting rail (130) is located in the limiting groove.

10. The orifice plate balancing valve with adjustable resistance according to claim 7, characterized in that: The actuated component comprises an actuated block (580) arranged on the adjustment ring (520) and in contact with the actuating block (340), and a return spring (590) is arranged between the actuated block (580) and the inner wall of the valve body (100).

Images