Novel orifice plate balance valve with adjustable resistance

Abstract

The utility model discloses a novel pore plate balance valve with adjustable resistance, which comprises a barrel body, the barrel body comprises a sealing sleeve, a driving shaft, an electric hand wheel, a main pore plate, an adjusting sealing plate, a driven shaft and a gear box, the top of the barrel body is radially welded with the vertical sealing sleeve, the driving shaft is positioned in the sealing sleeve, and the driven shaft is positioned in the sealing sleeve. An electric hand wheel is arranged at the top of the driving shaft, the main hole plate is fixed to the inner wall of the barrel in a sealed mode, the adjusting sealing plate and the main hole plate are coaxial, the surfaces of the adjusting sealing plate and the main hole plate are attached, the driven shaft and the axis of the main hole plate are installed through a bearing, the adjusting sealing plate is in key connection with the driven shaft, and a gearbox is installed between the driving shaft and the driven shaft. An existing resistance balancer is poor in abrasion resistance, small in resistance adjusting amplitude, difficult to overhaul and the like.

Description

Technical Field

[0001] The utility model belongs to the field of balancing valves, and particularly relates to a novel orifice balancing valve with adjustable resistance. Background Art

[0002] With the progress of society and the rapid development of industrialization, many factories are equipped with centralized dust collector systems. The centralized dust collector network is complicated and has many branch pipes. In order 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. In recent years, by adding a resistance balancer, the resistance distribution in the system can be changed by adjusting the parameters of the resistance balancer to achieve a balanced distribution of airflow, reduce maintenance costs, and improve the operating efficiency of the entire dust removal system.

[0003] The utility model patent with the publication number CN2481949Y discloses a resistance balancer for dust removal pipelines. In a short tube with flanges at both ends, a circular connecting plate is radially arranged. A balance pipe is arranged in the center of the connecting plate. The inner wall of the balance pipe has a wear-resistant lining. The throttling effect is good, the structure is simple, the weight is light, the cost is low, the wear resistance is high, and the service life is long. The above utility model adopts an annular connecting plate, which will cause dust accumulation when used in a horizontal flue. The machine needs to be shut down for maintenance or equipped with a shut-off valve before replacement. Utility Model Content

[0004] The utility model aims to provide a novel orifice plate balancing valve with adjustable resistance, so as to solve the problems of poor wear resistance, small resistance adjustment range, and difficult maintenance of the existing resistance balancer.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A novel orifice balancing valve with adjustable resistance comprises a cylinder, the cylinder comprising a sealing sleeve, a driving shaft, an electric handwheel, a main orifice plate, an adjusting sealing plate, a driven shaft, and a gear box. A vertical sealing sleeve is radially welded on the top of the cylinder, the driving shaft is located in the sealing sleeve, an electric handwheel is arranged on the top of the driving shaft, the main orifice plate is sealed and fixed to the inner wall of the cylinder, the adjusting sealing plate is coaxial with the main orifice plate and the surfaces are in contact with each other, the driven shaft is installed with the axis of the main orifice plate through a bearing, the adjusting sealing plate is keyed to the driven shaft, and a gear box is installed between the driving shaft and the driven shaft.

[0007] Preferably, air inlet holes are distributed on the main orifice plate.

[0008] Preferably, the adjustable sealing plate comprises a connecting strip and a circular sealing plate, the connecting strip connects a plurality of circular sealing plates into a circular structure, and the circular sealing plate corresponds to the position of the air inlet.

[0009] Preferably, the gear box is fixed to the inner wall of the cylinder through a connecting rod.

[0010] Preferably, two meshing bevel gears are arranged inside the gear box, and the two bevel gears are respectively fixed to the driving shaft and the driven shaft.

[0011] Preferably, a matching flange is provided on the top of the sealing sleeve.

[0012] Preferably, two pressure transmitters are provided at the bottom of the cylinder, and the two pressure transmitters are respectively located at left and right positions of the main orifice plate.

[0013] Preferably, the pressure transmitter is electrically connected to the electric handwheel.

[0014] Preferably, the main orifice plate and the regulating sealing plate are made of polytetrafluoroethylene material.

[0015] The utility model has the following beneficial effects:

[0016] 1. By turning the electric hand wheel to change the overlap rate between the circular sealing plate and the air inlet, the resistance of the valve can be adjusted online at any time. The air inlet distribution of the air inlet can even out the airflow, greatly reducing the wear of the device. The pressure regulating component is made of wear-resistant polytetrafluoroethylene material to reduce the wear rate and increase the service life. The flange has good sealing performance and does not leak smoke.

[0017] 2. The pressure on both sides of the main orifice plate is monitored by two pressure transmitters. The pressure difference between the left and right sides of the main orifice plate can be monitored in real time to adjust the gas flow rate. It is also easy to find gas leakage problems and realize online maintenance at any time.

[0018] 3. The cylinder and the compressed gas pipeline are connected by flanges, which are easy to disassemble and assemble. When equipment problems occur, they can be replaced at any time to avoid wasting a lot of working time due to equipment damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional view of the utility model;

[0020] Figure 2 This is a schematic diagram of the connection between the main orifice plate and the regulating sealing plate of the utility model;

[0021] Figure 3 This is a schematic diagram of the air inlet distribution of the utility model;

[0022] Figure 4 This is a schematic diagram of the distribution of circular sealing plates of the utility model;

[0023] Figure 5 This is a schematic diagram of the connection between the gear box and the cylinder of the utility model;

[0024] Figure 6 This is a schematic diagram of the electric hand wheel indicator plate of the utility model;

[0025] Icons: 1. Cylinder; 2. Sealing sleeve; 3. Driving shaft; 4. Electric handwheel; 5. Main orifice plate; 51. Air inlet; 6. Adjusting sealing plate; 61. Connecting strip; 62. Circular sealing plate; 7. Driven shaft; 8. Gearbox; 81. Connecting rod; 9. Matching flange; 10. Bevel gear; 11. Pressure transmitter. DETAILED DESCRIPTION

[0026] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0027] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] like Figure 1-5As shown, in this embodiment, a novel orifice plate balancing valve with adjustable resistance includes a cylinder 1, a vertical sealing sleeve 2 is radially welded on the top of the cylinder 1, a matching flange 9 is arranged on the top of the sealing sleeve 2 for sealing, the driving shaft 3 is located in the sealing sleeve 2, an electric hand wheel 4 is arranged on the top of the driving shaft 3, the main orifice plate 5 is sealed and fixed to the inner wall of the cylinder 1, the adjusting sealing plate 6 is coaxial with the main orifice plate 5 and the surface is in contact with each other, the driven shaft 7 is installed with the main orifice plate 5 axis through a bearing, the adjusting sealing plate 6 is key-connected with the driven shaft 7, a gear box 8 is installed between the driving shaft 3 and the driven shaft 7, and the gear box 8 is fixed to the inner wall of the cylinder 1 through a connecting rod 81. The main orifice plate 5 is provided with air inlet holes 51. The adjusting sealing plate 6 comprises a connecting strip 61 and a circular sealing plate 62. The connecting strip 61 connects a plurality of circular sealing plates 62 into a circular structure, so that each circular sealing plate 62 corresponds to each air inlet 51. The adjusting sealing plate 6 is driven to rotate by rotating the electric hand wheel 4, so as to change the overlap rate between the circular sealing plate 62 and the air inlet 51, and adjust the resistance of the valve online at any time to make the gas flow uniform. The main orifice plate 5 and the adjusting sealing plate 6 are made of polytetrafluoroethylene.

[0030] Specifically, the driving shaft 3 is driven to rotate by the electric hand wheel 4, and the driven shaft 7 is driven to rotate by the gear box 8, so that the adjusting sealing plate 6 rotates. Figure 6 As shown, when the circular sealing plate 62 and the air inlet hole 51 completely overlap, the minimum opening rate of the air inlet hole 51 of the main orifice plate 5 is 0, that is, the balancing valve shut-off function is realized; when the circular sealing plate 62 and the air inlet hole 51 are completely offset, the valve realizes a maximum opening rate of 0.6, achieving the resistance change of the balancing valve.

[0031] Two meshing bevel gears 10 are arranged inside the gear box 8 , and the two bevel gears 10 are fixed to the driving shaft 3 and the driven shaft 7 respectively.

[0032] Specifically, the transmission direction of the driving shaft 3 is changed by the two bevel gears 10 .

[0033] Two pressure transmitters 11 are provided at the bottom of the cylinder 1 . The two pressure transmitters 11 are respectively located at left and right positions of the main orifice plate 5 . The pressure transmitters 11 are electrically connected to the electric hand wheel 4 .

[0034] Specifically, the two pressure transmitters 11 can monitor the air pressure difference at the left and right positions of the main orifice plate 5 in real time. By monitoring the data, the rotation angle of the electric hand wheel 4 is adjusted to accurately change the overlap rate of the circular sealing plate 62 and the air inlet hole 51 to achieve the set air pressure difference and adjust the resistance change of the balancing valve.

[0035] The working principle of the utility model is: when compressed air enters the cylinder 1, the two pressure transmitters 11 sense the incoming flow pressure and the pressure difference. After determining that the opening rate of the air inlet hole 51 needs to be adjusted according to the design, the driving shaft 3 is rotated by the electric hand wheel 4, and then the driven shaft 7 is driven to rotate through the bevel gear 10, driving the adjustment sealing plate 6 to rotate, and the circular sealing plate 62 is moved on the air inlet hole 51 through the indication on the electric hand wheel 4, so that the air inlet hole 51 reaches the corresponding opening rate, thereby realizing online adjustment of the airflow resistance.

[0036] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel orifice plate balancing valve with adjustable resistance, comprising a cylinder (1), both sides of which are connected to a compressed gas pipeline via flanges, characterized in that: The cylinder (1) comprises a sealing sleeve (2), a driving shaft (3), an electric hand wheel (4), a main orifice plate (5), an adjusting sealing plate (6), a driven shaft (7), and a gear box (8). A vertical sealing sleeve (2) is radially welded on the top of the cylinder (1). The driving shaft (3) is located in the sealing sleeve (2). An electric hand wheel (4) is arranged on the top of the driving shaft (3). The main orifice plate (5) is sealed and fixed to the inner wall of the cylinder (1). The adjusting sealing plate (6) and the main orifice plate (5) are coaxial and in contact with each other. The driven shaft (7) and the main orifice plate (5) are mounted on the axis through bearings. The adjusting sealing plate (6) and the driven shaft (7) are key-connected. A gear box (8) is installed between the driving shaft (3) and the driven shaft (7).

2. A novel orifice plate balancing valve with adjustable resistance according to claim 1, characterized in that: The main orifice plate (5) is provided with air inlet holes (51).

3. A novel orifice plate balancing valve with adjustable resistance according to claim 2, characterized in that: The adjustable sealing plate (6) comprises a connecting strip (61) and a circular sealing plate (62); the connecting strip (61) connects a plurality of circular sealing plates (62) into a circular structure; the circular sealing plates (62) correspond in position to the air inlet holes (51).

4. A novel orifice plate balancing valve with adjustable resistance according to claim 1, characterized in that: The gear box (8) is fixed to the inner wall of the cylinder (1) via a connecting rod (81).

5. A novel orifice plate balancing valve with adjustable resistance according to claim 1, characterized in that: Two meshing bevel gears (10) are arranged inside the gear box (8), and the two bevel gears (10) are respectively fixed to the driving shaft (3) and the driven shaft (7).

6. A novel orifice plate balancing valve with adjustable resistance according to claim 1, characterized in that: A matching flange (9) is provided on the top of the sealing sleeve (2).

7. A novel orifice plate balancing valve with adjustable resistance according to claim 1, characterized in that: Two pressure transmitters (11) are arranged at the bottom of the cylinder (1), and the two pressure transmitters (11) are respectively located at left and right positions of the main orifice plate (5).

8. A novel orifice plate balancing valve with adjustable resistance according to claim 7, characterized in that: The pressure transmitter (11) is electrically connected to the electric hand wheel (4).

9. The novel orifice plate balancing valve with adjustable resistance according to claim 1 is characterized in that: The main orifice plate (5) and the regulating sealing plate (6) are made of polytetrafluoroethylene material.

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