Induced draft fan air volume regulating valve

Abstract

The utility model discloses an air volume regulating valve for an induced draft fan, which belongs to the technical field of regulating valves. The utility model comprises an induced draft fan duct and a connecting pipe, wherein the inner wall of the induced draft fan duct is fixedly equipped with a round pipe two, the outer edge of the connecting pipe is fixedly equipped with a disc, and a plurality of round pipes one are distributed in an annular manner on the outer side of the disc; the rotating force is transmitted to the connecting rod and the wind shield through a conduction plate by turning the circular ring, so that the plurality of wind shields can rotate synchronously, and then the air volume of the inner cavity of the induced draft fan duct is regulated (when in a fitted state, the air volume is in a minimum state, and when the plurality of wind shields are fully unfolded, the air volume is in a maximum state), so that the air volume of the inner cavity of the induced draft fan duct can be regulated in a timely, convenient and accurate manner; the wind shield made of polypropylene has the advantages of being light in weight, non-toxic, good in toughness and good in chemical resistance, and is not easy to produce toxic and harmful substances, so that it is convenient to use as an air volume regulating valve in daily life.

Description

Technical Field

[0001] The utility model relates to the technical field of regulating valves, in particular to an air volume regulating valve for an induced draft fan. Background Art

[0002] The air volume regulating valve is a valve used to control the air volume. Among them, the butterfly valve is the most widely used. The butterfly valve controls the air volume by the opening and closing angle of the valve wind shield. It is an indispensable accessory in the ventilation, air conditioning and air purification projects of industrial plants and civil buildings.

[0003] In order to adjust the air volume, the existing regulating valve usually sets multiple wind shields in the pipeline. However, the multiple wind shields are relatively asynchronous when rotating to adjust the air volume, which easily leads to problems such as inaccurate air volume adjustment and cumbersome air volume control.

[0004] For this reason, we propose the induced draft fan air volume regulating valve. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides an induced draft fan air volume regulating valve, which overcomes the deficiencies of the prior art and aims to solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an induced draft fan air volume regulating valve comprises an induced draft fan pipe and a connecting pipe, the inner wall of the induced draft fan pipe is fixedly equipped with a round tube 2, the outer edge of the connecting pipe is fixedly equipped with a disc, a plurality of round tubes 1 are distributed in an annular manner on the outer side of the disc, a positioning sleeve is inserted into the inner wall of the round tube 1, a plug rod is rotatably connected to the inner wall of the positioning sleeve, a wind shield is fixedly installed on the side of the plug rod away from the positioning sleeve by self-tapping screws, a connecting strip is fixedly equipped on the side of the wind shield away from the plug rod, a connecting strip is threadedly connected to a connecting rod at the top, a conducting plate is fixedly connected to the top of the connecting rod by bolt 1, a side of the conducting plate away from the bolt 1 is fixedly connected to the ring by bolt 2, one end of a fixing rod is penetrated by the inner wall of the induced draft fan pipe, and a nut 1 and a nut 2 are respectively threadedly connected to the outer edge of the fixing rod.

[0007] As a preferred technical solution of the utility model, the connecting rod is rotatably connected to the inner wall of the second circular tube, and the outer diameter of the connecting rod is matched with the inner wall diameter of the second circular tube.

[0008] By adopting the above technical solution, the stability of the connecting rod during rotation can be guaranteed, and the position thereof can be guaranteed not to be shifted, thereby ensuring that the connecting rod will not swing arbitrarily during rotation.

[0009] As a preferred technical solution of the utility model, a threaded hole is opened on the top of the connecting rod, the bolt 1 passes through the conductive plate and is threadedly connected to the inner wall of the threaded hole, and a gasket is provided between the conductive plate and the bolt 1.

[0010] By adopting the above technical solution, the conductive plate and the connecting rod can be firmly connected by bolt 1, and the friction between the bolt 1 and the conductive plate can be increased by the gasket, thereby ensuring that they will not be easily disengaged.

[0011] As a preferred technical solution of the utility model, the number of nut one and nut two are both two, one of nut one and nut two are respectively arranged on the inner wall and outer edge of the induced draft fan duct, the end of the fixing rod away from the induced draft fan duct is inserted into the inner wall of the connecting pipe, and the other nut one and nut two are respectively arranged on the inner wall and outer edge of the connecting pipe, the number of the fixing rods is eight, and the eight fixing rods are symmetrically distributed in a ring shape on the outer edge of both sides of the connecting pipe.

[0012] By adopting the above technical solution, the two ends of the fixing rod can be fixedly connected to the induced draft fan pipe and the connecting pipe by using nuts 1 and 2, so that the connecting pipe, the disc and the round pipe 1 can be stably positioned in the middle of the inner cavity of the induced draft fan pipe.

[0013] As a preferred technical solution of the utility model, the outer diameter of the insertion rod is matched with the inner wall diameter of the positioning sleeve.

[0014] By adopting the above technical solution, the insertion rod can be stably rotated at the inner wall position of the positioning sleeve, ensuring that it will not be easily deviated from its position during rotation.

[0015] As a preferred technical solution of the utility model, the number of the positioning sleeve, the insertion rod, the wind shield, the self-tapping screw, the connecting strip, the round tube 2, the connecting rod, the conduction plate, the gasket, the bolt 1 and the bolt 2 are all several, and the several positioning sleeves, the insertion rod, the wind shield, the self-tapping screw, the connecting strip, the round tube 2, the connecting rod, the conduction plate, the gasket, the bolt 1 and the bolt 2 are distributed in a ring shape on the inner side of the induced draft fan duct, and the several conduction plates are fixedly connected to the circular ring by several bolts 2, and the circular ring is arranged at the outer edge of the induced draft fan duct.

[0016] By adopting the above technical solution, the rotational force can be transmitted to the connecting rod and the wind shield through the conduction plate by turning the ring, so that several wind shields can rotate synchronously, thereby adjusting the air volume in the inner cavity of the induced draft fan duct.

[0017] As a preferred technical solution of the utility model, the windshield is made of polypropylene.

[0018] By adopting the above technical solution, polypropylene has the advantages of being light, non-toxic, tough, and chemically resistant, and is not prone to producing toxic and harmful substances, thereby facilitating daily use as an air volume regulating valve.

[0019] Beneficial effects of the utility model:

[0020] 1. By turning the ring, the rotational force is transmitted to the connecting rod and the wind shield through the conduction plate, so that several wind shields can rotate synchronously, and then the air volume of the inner cavity of the induced draft fan duct is adjusted (when it is in a fitted state, it is a state of minimum air volume circulation, and when several wind shields are fully unfolded, it is a state of maximum air volume circulation), so that the air volume of the inner cavity of the induced draft fan duct can be adjusted in a timely, convenient and accurate manner. The wind shield made of polypropylene has the advantages of light weight, non-toxicity, good toughness, good chemical resistance, and is not easy to produce toxic and harmful substances, so it is convenient to use as an air volume regulating valve in daily life.

[0021] 2. By removing nut 1 and the fixing rod, the fixing rod can be separated from the connection between the induced draft fan duct and the connecting pipe, and then by disconnecting the ring from the conduction plate, the connecting rod can be taken out from the outer edge of the connecting strip, and then the wind shield can be removed, so that it is easy to maintain, and one of them can be replaced separately without replacing the entire one, reducing resource consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0023] Figure 2 It is a partial structural schematic diagram of the utility model;

[0024] Figure 3 For the utility model Figure 2 The enlarged structural diagram at A in the middle;

[0025] Figure 4 It is a schematic diagram of the expanded structure of the utility model;

[0026] Figure 5 This is a schematic diagram of the connecting pipe structure of the utility model.

[0027] In the figure: 1. induced draft fan duct; 2. connecting pipe; 3. disc; 4. round tube 1; 5. positioning sleeve; 6. plug rod; 7. wind shield; 8. self-tapping screw; 9. connecting strip; 10. round tube 2; 11. connecting rod; 12. conduction plate; 13. gasket; 14. bolt 1; 15. ring; 16. bolt 2; 17. fixing rod; 18. nut 1; 19. nut 2. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-Figure 5 The induced draft fan air volume regulating valve comprises an induced draft fan pipe 1 and a connecting pipe 2. The inner wall of the induced draft fan pipe 1 is fixedly equipped with a round tube 2 10. The outer edge of the connecting pipe 2 is fixedly equipped with a disc 3. The outer side of the disc 3 is annularly distributed with a plurality of round tubes 14. The inner wall of the round tube 4 is plugged with a positioning sleeve 5. The inner wall of the positioning sleeve 5 is rotatably connected with a plug rod 6. A wind shield plate 7 is fixedly installed on the side of the plug rod 6 away from the positioning sleeve 5 through a self-tapping screw 8. A connecting strip 9 is fixedly equipped on the side of the wind shield plate 7 away from the plug rod 6. A connecting rod 11 is threadedly connected to the top of the connecting strip 9. A conductive plate 12 is fixedly connected to the top of the connecting rod 11 through a bolt 14. The conductive plate 12 is fixedly connected to the ring 15 through a bolt 2 16 on the side away from the bolt 14. One end of a fixing rod 17 is penetrated through the inner wall of the induced draft fan pipe 1. A nut 18 and a nut 2 19 are respectively threadedly connected to the outer edge of the fixing rod 17.

[0030] See also Figure 2 and Figure 4 The connecting rod 11 is rotatably connected to the inner wall of the circular tube 10, and the outer diameter of the connecting rod 11 is adapted to the inner wall diameter of the circular tube 10, so that the stability of the connecting rod 11 during rotation can be guaranteed, and the position will not be shifted, thereby ensuring that the connecting rod 11 will not swing arbitrarily during rotation.

[0031] See also Figure 4 A threaded hole is provided at the top of the connecting rod 11, and a bolt 14 passes through the conductive plate 12 and is threadedly connected to the inner wall of the threaded hole. A gasket 13 is provided between the conductive plate 12 and the bolt 14, so that the conductive plate 12 and the connecting rod 11 can be firmly connected by the bolt 14, and the friction between the bolt 14 and the conductive plate 12 can be increased by the gasket 13, thereby ensuring that they will not be easily detached.

[0032] See also Figure 1 - Figure 3The number of nuts 18 and nuts 2 19 is two, one of which is arranged on the inner wall and outer edge of the induced draft fan duct 1, respectively; the end of the fixing rod 17 away from the induced draft fan duct 1 is plugged into the inner wall of the connecting pipe 2, and the other nut 18 and nut 2 19 are arranged on the inner wall and outer edge of the connecting pipe 2, respectively; the number of fixing rods 17 is eight, and the eight fixing rods 17 are symmetrically distributed on the outer edge of both sides of the connecting pipe 2 in a circular shape, so that the two ends of the fixing rod 17 can be fixedly connected to the induced draft fan duct 1 and the connecting pipe 2 by using nuts 18 and nuts 2 19, so that the connecting pipe 2, the disc 3 and the round tube 1 4 can be stably positioned in the middle of the inner cavity of the induced draft fan duct 1

[0033] See also Figure 4 The outer diameter of the insertion rod 6 is matched with the inner wall diameter of the positioning sleeve 5, so that the insertion rod 6 can stably rotate at the inner wall position of the positioning sleeve 5, ensuring that it will not easily shift its position during rotation.

[0034] See also Figure 1 , the number of positioning sleeves 5, plug rods 6, wind shield plates 7, self-tapping screws 8, connecting strips 9, round tubes 10, connecting rods 11, conduction plates 12, gaskets 13, bolts 14 and bolts 16 are all several, and several positioning sleeves 5, plug rods 6, wind shield plates 7, self-tapping screws 8, connecting strips 9, round tubes 10, connecting rods 11, conduction plates 12, gaskets 13, bolts 14 and bolts 16 are distributed in a ring shape on the inner side of the induced draft fan duct 1, and several conduction plates 12 are fixedly connected to the ring 15 through several bolts 16. The ring 15 is arranged at the outer edge of the induced draft fan duct 1, so that the rotational force can be transmitted to the connecting rod 11 and the wind shield plates 7 through the conduction plate 12 by turning the ring 15, so that the several wind shield plates 7 can rotate synchronously, and then the air volume of the inner cavity of the induced draft fan duct 1 is adjusted.

[0035] See also Figure 2 and Figure 4 The windshield 7 is made of polypropylene, which has the advantages of being light, non-toxic, tough, and chemically resistant, and is not prone to producing toxic and harmful substances, making it convenient to use as an air volume regulating valve in daily life.

[0036] Working principle: When using the device, first, the rotational force can be transmitted to the connecting rod 11 and the wind shield 7 through the conduction plate 12 by toggling the circular ring 15, so that several wind shields 7 can rotate synchronously, and then the air volume of the inner cavity of the induced draft fan duct 1 is adjusted (several wind shields 7 are in a fitted state, which is a state of minimum air volume circulation, and several wind shields 7 are fully unfolded, which is a state of maximum air volume circulation), so that the air volume of the inner cavity of the induced draft fan duct 1 can be adjusted in time, and the fixing rod 17 can be removed by removing the nut 18 and the fixing rod 17 so as to disconnect the fixing rod 17 from the connection between the induced draft fan duct 1 and the connecting pipe 2, and then the circular ring 15 is disconnected from the conduction plate 12, and then the connecting rod 11 can be taken out from the outer edge of the connecting strip 9, and then the wind shield 7 can be removed, so as to facilitate maintenance, and one of them can be replaced separately without replacing the whole, thereby reducing resource consumption.

[0037] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An induced draft fan air volume regulating valve, comprising an induced draft fan pipeline (1) and a connecting pipe (2), characterized in that: The inner wall of the induced draft fan duct (1) is fixedly mounted with a round tube 2 (10), the outer edge of the connecting tube (2) is fixedly mounted with a round disc (3), a plurality of round tubes 1 (4) are distributed in an annular manner on the outer side of the round disc (3), a positioning sleeve (5) is inserted into the inner wall of the round tube 1 (4), a plug rod (6) is rotatably connected to the inner wall of the positioning sleeve (5), a windshield (7) is fixedly mounted on the side of the plug rod (6) away from the positioning sleeve (5) via a self-tapping screw (8), and the side of the windshield (7) away from the plug rod (6) is fixedly mounted with a windshield (7) The fixed assembly is provided with a connecting strip (9), the top of the connecting strip (9) is threadedly connected to a connecting rod (11), the top of the connecting rod (11) is fixedly connected to a conducting plate (12) via a first bolt (14), the side of the conducting plate (12) away from the first bolt (14) is fixedly connected to a ring (15) via a second bolt (16), the inner wall of the induced draft fan duct (1) is penetrated by one end of a fixing rod (17), the outer edge of the fixing rod (17) is respectively threadedly connected to a first nut (18) and a second nut (19).

2. The induced draft fan air volume regulating valve according to claim 1, characterized in that: The connecting rod (11) is rotatably connected to the inner wall of the second circular tube (10), and the outer diameter of the connecting rod (11) is matched with the inner wall diameter of the second circular tube (10).

3. The induced draft fan air volume regulating valve according to claim 1, characterized in that: A threaded hole is provided at the top of the connecting rod (11), and the bolt 1 (14) passes through the conductive plate (12) and is threadedly connected to the inner wall of the threaded hole. A gasket (13) is provided between the conductive plate (12) and the bolt 1 (14).

4. The induced draft fan air volume regulating valve according to claim 1, characterized in that: The number of the nut one (18) and the nut two (19) is two, one of the nut one (18) and the nut two (19) is respectively arranged on the inner wall and the outer edge of the induced draft fan duct (1), one end of the fixing rod (17) away from the induced draft fan duct (1) is plugged into the inner wall of the connecting pipe (2), and the other nut one (18) and the nut two (19) are respectively arranged on the inner wall and the outer edge of the connecting pipe (2), the number of the fixing rods (17) is eight, and the eight fixing rods (17) are symmetrically distributed in a ring shape on the outer edge of both sides of the connecting pipe (2).

5. The induced draft fan air volume regulating valve according to claim 1, characterized in that: The outer diameter of the insertion rod (6) is matched with the inner wall diameter of the positioning sleeve (5).

6. The induced draft fan air volume regulating valve according to claim 1, characterized in that: The number of the positioning sleeve (5), the insertion rod (6), the wind shield (7), the self-tapping screw (8), the connecting strip (9), the second round tube (10), the connecting rod (11), the conductive plate (12), the gasket (13), the first bolt (14) and the second bolt (16) is several, and the positioning sleeve (5), the insertion rod (6), the wind shield (7), the self-tapping screw (8), the connecting strip (9), the second round tube (10), the connecting rod (11), the conductive plate (12), the gasket (13), the first bolt (14) and the second bolt (16) are distributed in a ring shape on the inner side of the induced draft fan duct (1), and the plurality of conductive plates (12) are fixedly connected to the circular ring (15) by means of the plurality of second bolts (16), and the circular ring (15) is arranged at the outer edge of the induced draft fan duct (1).

7. The induced draft fan air volume regulating valve according to claim 1, characterized in that: The windshield (7) is made of polypropylene.

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