Waste gas treatment centrifugal fan

Abstract

The utility model discloses a waste gas treatment centrifugal fan which comprises a volute, one end face of the volute is communicated with an air collecting pipe, the other end face of the volute is provided with a rotating motor, and the outer edge of the volute is communicated with an exhaust pipe. The impeller is rotationally connected into the volute, one end face of the impeller is connected with the rotating end of the rotating motor, a centering part is arranged on the other end face of the impeller in an outward protruding mode, and a centering groove is formed in the end face of the centering part; the filtering assembly comprises a stroke pipe, a filtering plate and a mounting pipe, the stroke pipe and the mounting pipe are coaxially arranged and are both connected to the inner wall of the air collecting pipe in a sleeving mode, the filtering plate is fixedly connected to the inner wall of an opening of the stroke pipe, and a centering shaft is arranged in the center of the filtering plate. According to the waste gas treatment centrifugal fan, centering of the impeller is achieved through installation of the filtering assembly, and dust particles in waste gas are effectively filtered out through the filtering holes in the filtering plate so that stable rotation of the impeller can be guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to waste gas treatment technical field, especially waste gas treatment centrifugal fan. BACKGROUND

[0002] Waste gas treatment is mainly used for the treatment of industrial waste gas such as dust particles, flue gas smoke, peculiar smell gas, toxic and harmful gas generated in industrial sites, usually needs to use centrifugal fan to guide wind, centrifugal fan includes impeller, casing, coupling, shaft, motor etc., the impeller is the main work component of wind pressure and energy transmission, the casing is mainly used to introduce gas and discharge gas, simultaneously, the part kinetic energy of gas is changed into pressure energy, the coupling is used to connect motor and fan, the shaft installs and fixes the impeller, through the coupling and motor, wind pressure is generated through the rotation of the impeller, after the waste gas is introduced from the air inlet, it is discharged at high pressure through the casing. However, the existing centrifugal fan when using, the waste gas without filtering treatment is directly discharged from the casing air outlet, in the process, the dust particles in the waste gas may enter the inside of the impeller, which affects the operation of the impeller, and the one side of the impeller is located at the coupling connection, the other side of the impeller has no centering device, the impeller is easy to eccentric in the process of rotating, leading to unstable rotation of the impeller. SUMMARY

[0003] The utility model discloses a waste gas treatment centrifugal fan, which is designed to solve the above technical problems, realizes the centering of the impeller through the installation of the filtering assembly, and effectively filters the dust particles in the waste gas through the filtering holes on the filter plate, so as to ensure the stable rotation of the impeller.

[0004] In order to solve the above technical problems, the technical scheme of the utility model is as follows: a waste gas treatment centrifugal fan, comprising:

[0005] A volute is provided with a wind collecting pipe at one end surface, the inner wall of the wind collecting pipe is stepped, the other end surface of the volute is provided with a rotating motor, and the outer edge of the volute is provided with an exhaust pipe.

[0006] An impeller is rotatably connected in the volute, one end surface of the impeller is connected with the rotating end of the rotating motor, the other end surface of the impeller is provided with a centering part outwardly, and the end surface of the centering part is provided with a centering groove.

[0007] The filter assembly comprises a stroke pipe, a filter plate and a mounting pipe, the stroke pipe and the mounting pipe are coaxially arranged on the inner wall of the air collecting pipe, the inner wall of the stroke pipe and the inner wall of the mounting pipe are matched with each other, the filter plate is fixedly connected to the opening inner wall of the stroke pipe close to the impeller, a centering shaft is arranged on the center position of the filter plate, the centering shaft is sleeved on the inner wall of the centering groove, the filter plate is penetrated by a plurality of filter holes arranged in an annular array, one end of the mounting pipe sleeved into the air collecting pipe abuts on the end face of the stroke pipe, and one end of the mounting pipe protruding from the air collecting pipe is fixedly connected with a mounting sleeve, and the inner wall of the mounting sleeve is detachably connected with the outer wall of the air collecting pipe.

[0008] Preferably, the filter plate is provided with a bearing member on the side wall close to the impeller, the outer ring of the bearing member is fixedly connected with the filter plate, and the inner ring of the bearing member is fixedly connected with the centering shaft.

[0009] Preferably, the inner wall of the air collecting pipe comprises a sliding groove and a stroke groove arranged coaxially, the inner diameter of the sliding groove is smaller than the inner diameter of the stroke groove, the stroke pipe is sleeved on the inner wall of the sliding groove, the outer wall of the stroke pipe is provided with a stroke ring slidingly connected in the stroke groove, and the mounting pipe is sleeved and slidingly connected in the stroke groove.

[0010] Preferably, an elastic member is arranged between the stroke ring and the stroke groove, so that the stroke pipe has a tendency to protrude from the air collecting pipe.

[0011] Preferably, at least one guide groove is formed in the inner wall of the sliding groove, and the outer wall of the stroke pipe is provided with a guide strip slidingly connected in the guide groove.

[0012] Preferably, the inner wall of the mounting sleeve is threadedly connected with the outer wall of the air collecting pipe.

[0013] Preferably, the volute comprises a shell and a cover plate, the shell is arranged with an opening away from the side of the rotary motor, the cover plate is detachably connected to the opening side of the shell, the cover plate is penetrated by a mounting hole for inserting the air collecting pipe, the outer wall of the air collecting pipe is fixedly connected with a plurality of mounting portions distributed in the circumferential direction, and the mounting portions are detachably connected with the cover plate.

[0014] Preferably, the base is further provided with two support plates symmetrically arranged thereon, a space between the two support plates is used for inserting the bottom of the volute, and a first support frame and a second support frame are respectively arranged on the two sides of the base, a first support groove for placing the rotary motor is formed in the first support frame, and a second support groove for placing the air collecting pipe is formed in the second support frame.

[0015] Compared with the prior art, the waste gas treatment centrifugal fan has the beneficial effects that

[0016] The waste gas treatment centrifugal fan has the beneficial effects that BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structure schematic of the centrifugal fan in the embodiment Figure One ;

[0018] Figure 2 is a structure schematic of the centrifugal fan in the embodiment Figure Two ;

[0019] Figure 3 is a sectional view of the centrifugal fan in the embodiment Figure One ;

[0020] Figure 4 is a sectional view of the centrifugal fan in the embodiment Figure Two .

[0021] In the figure: 1, volute; 11, shell; 12, cover plate; 121, mounting hole; 2, air collecting pipe; 201, mounting part; 202, sliding chute; 203, stroke groove; 204, guide groove; 3, rotating motor; 4, exhaust pipe; 5, impeller; 501, centering part; 502, centering groove; 6, filter assembly; 61, stroke pipe; 62, filter plate; 63, mounting pipe; 611, stroke ring; 612, guide strip; 621, centering shaft; 622, filter hole; 623, bearing part; 631, mounting sleeve; 7, elastic part; 8, base; 801, support plate; 802, first support frame; 803, second support frame; 804, first support groove; 805, second support groove. DETAILED DESCRIPTION

[0022] The waste gas treatment centrifugal fan has the beneficial effects that

[0023] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4The utility model provides exhaust treatment centrifugal fan, including volute 1, impeller 5, filter assembly 6 and base 8, one end surface of volute 1 is connected with the setting of wind collecting pipe 2, the inner wall of wind collecting pipe 2 is stepped, the inner wall of wind collecting pipe 2 includes the sliding slot 202 and the stroke groove 203 of coaxial arrangement, the inner diameter of sliding slot 202 is less than the inner diameter of stroke groove 203, the other end surface of volute 1 is provided with rotating electrical machine 3, the outer edge of volute 1 is connected with the setting of exhaust pipe 4.

[0024] Preferably, volute 1 includes shell 11 and cover plate 12, the side opening of shell 11 is away from rotating electrical machine 3, and cover plate 12 is detachably connected to the opening side of shell 11 by bolts, and the split design of volute 1 facilitates the disassembly and assembly of volute 1, so that impeller 5 is installed in the inner cavity of shell 11. Cover plate 12 penetrates mounting hole 121 for inserting wind collecting pipe 2, and the outer wall of wind collecting pipe 2 is fixedly connected with a plurality of mounting portions 201 distributed at intervals in the circumferential direction, and mounting portions 201 are detachably connected with cover plate 12 by bolts.

[0025] Impeller 5 is rotatably connected in volute 1, one end surface of impeller 5 is connected with the rotating end of rotating electrical machine 3, and the other end surface of impeller 5 protrudes outwardly and is provided with centering portion 501, and the end surface of centering portion 501 is provided with centering groove 502.

[0026] Filter assembly 6 includes stroke pipe 61, filter plate 62 and mounting pipe 63, stroke pipe 61 and mounting pipe 63 are coaxially arranged and both are sleeved on the inner wall of wind collecting pipe 2, the inner wall of stroke pipe 61 cooperates with the inner wall of mounting pipe 63, the inner wall of sliding slot 202 is provided with guide groove 204, the outer wall of stroke pipe 61 is provided with guide strip 612 slidably connected in guide groove 204, which guides stroke pipe 61 to be sleeved on the inner wall of sliding slot 202 in the correct position, avoiding the rotation of stroke pipe 61 in sliding slot 202.

[0027] The outer wall of stroke pipe 61 is provided with stroke ring 611 slidably connected in stroke groove 203, mounting pipe 63 is sleeved and slidably connected in stroke groove 203, one end of mounting pipe 63 protruding from wind collecting pipe 2 is fixedly connected with mounting sleeve 631, the inner wall of mounting sleeve 631 is detachably connected with the outer wall of wind collecting pipe 2, preferably, the inner wall of mounting sleeve 631 is threadedly connected with the outer wall of wind collecting pipe 2.

[0028] The installation pipe 63 is sleeved into one end of the air collecting pipe 2 and abuts against the stroke ring 611, so that the stroke pipe 61 is close to the centering part 501 of the impeller 5, the filter plate 62 is fixedly connected to the inner wall of the opening of the stroke pipe 61 close to the impeller 5, the centering shaft 621 is arranged at the center position of the filter plate 62 and is sleeved with the inner wall of the centering groove 502, and the centering shaft 621 is used for centering the impeller 5. Preferably, the bearing 623 is arranged on the side wall of the filter plate 62 close to the impeller 5, the outer ring of the bearing 623 is fixedly connected with the filter plate 62, and the inner ring of the bearing 623 is fixedly connected with the centering shaft 621. The centrifugal fan realizes the centering of the impeller 5 through the installation of the filter assembly 6. The filter plate 62 is penetrated through with a plurality of filter holes 622 arranged in an annular array, when the exhaust gas enters the inside of the volute 1 from the air collecting pipe 2, the exhaust gas is subjected to the action of high-speed rotation of the impeller 5, pressure is generated, and the exhaust gas is discharged through the exhaust pipe 4, in this process, the exhaust gas is first subjected to the filter plate 62 of the filter assembly 6 before entering the impeller 5, the filter holes 622 on the filter plate 62 effectively filter out the dust particles in the exhaust gas, so as to ensure the stable rotation of the impeller 5. And the split design of the filter assembly 6 makes the filter assembly 6 easy to disassemble, replace, maintain and use.

[0029] Preferably, the elastic member 7 is arranged between the stroke ring 611 and the stroke groove 203, so that the stroke pipe 61 has the tendency to stretch out of the air collecting pipe 2. The elastic member 7 is a spring structure, the elastic member 7 is sleeved on the outer wall of the stroke pipe 61, and the two ends of the elastic member 7 abut against each other between the stroke ring 611 and the stroke groove 203. When the filter assembly 6 is disassembled, the installation sleeve 631 is rotated out of the air collecting pipe 2, and the installation pipe 63 is taken out, under the action of the elastic member 7, the stroke pipe 61 stretches outwards so as to be taken out by the worker, so as to clean the filter plate 62.

[0030] Preferably, the base 8 is symmetrically provided with two supporting plates 801, and the space between the two supporting plates 801 is used for inserting the bottom of the volute 1 and limiting the volute 1. The two sides of the base 8 are respectively provided with a first supporting frame 802 and a second supporting frame 803, the first supporting frame 802 is provided with a first supporting groove 804 for placing the rotating motor 3, and the second supporting frame 803 is provided with a second supporting groove 805 for placing the air collecting pipe 2, so as to support the volute 1.

[0031] Of course, the above is only a typical example of the present application, in addition to this, the present application can have other various specific implementation manners, and any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of the present application.

Claims

1. An exhaust gas treatment centrifugal fan characterized by, Include: The volute (1), one end of the volute (1) is provided with a wind collecting pipe (2), the inner wall of the wind collecting pipe (2) is stepped, the other end of the volute (1) is provided with a rotating motor (3), the outer edge of the volute (1) is provided with an exhaust pipe (4); Impeller (5), the impeller (5) is rotatably connected in the volute (1), one end of the impeller (5) is connected with the rotating end of the rotating motor (3), the other end of the impeller (5) is provided with a centering part (501) outwardly, the end surface of the centering part (501) is provided with a centering groove (502); Filter assembly (6), the filter assembly (6) includes stroke pipe (61), filter plate (62) and mounting pipe (63), the stroke pipe (61) and the mounting pipe (63) are coaxially arranged and both are sleeved on the inner wall of the wind collecting pipe (2), the inner wall of the stroke pipe (61) and the inner wall of the mounting pipe (63) are matched with each other, the filter plate (62) is fixedly connected to the opening inner wall of the stroke pipe (61) close to the impeller (5), the centering shaft (621) is arranged on the filter plate (62), the centering shaft (621) is sleeved on the inner wall of the centering groove (502), the filter plate (62) is provided with a plurality of filter holes (622) which are arranged in annular array, the mounting pipe (63) is sleeved into one end of the wind collecting pipe (2) and abuts on the end surface of the stroke pipe (61), the mounting pipe (63) is fixedly connected with a mounting sleeve (631) which protrudes from one end of the wind collecting pipe (2), the inner wall of the mounting sleeve (631) and the outer wall of the wind collecting pipe (2) are detachably connected.

2. A centrifugal fan for exhaust gas treatment according to claim 1, characterized in that The filter plate (62) is provided with a bearing (623) on the side wall close to the impeller (5), the outer ring of the bearing (623) is fixedly connected with the filter plate (62), and the inner ring of the bearing (623) is fixedly connected with the centering shaft (621).

3. A centrifugal fan for exhaust gas treatment according to claim 1, characterized in that The inner wall of the wind collecting pipe (2) includes a chute (202) and a stroke groove (203) arranged coaxially, the inner diameter of the chute (202) is smaller than the inner diameter of the stroke groove (203), the stroke pipe (61) is sleeved on the inner wall of the chute (202), the outer wall of the stroke pipe (61) is provided with a stroke ring (611) which is slidably connected in the stroke groove (203), and the mounting pipe (63) is sleeved and slidably connected in the stroke groove (203).

4. A centrifugal fan for exhaust gas treatment according to claim 3, characterized in that The elastic member (7) is arranged between the stroke ring (611) and the stroke groove (203), so that the stroke pipe (61) has the tendency to protrude from the wind collecting pipe (2).

5. A centrifugal fan for exhaust gas treatment according to claim 3, characterized in that The inner wall of the chute (202) is provided with at least one guide groove (204), and the outer wall of the stroke pipe (61) is provided with a guide strip (612) which is slidably connected in the guide groove (204).

6. A centrifugal fan for exhaust air treatment according to claim 1, characterized in that The inner wall of the mounting sleeve (631) and the outer wall of the wind collecting pipe (2) are threadedly connected.

7. The exhaust treatment centrifugal fan of claim 1, wherein, The volute (1) comprises a shell (11) and a cover plate (12), the shell (11) is arranged to open away from the side of the rotary motor (3), the cover plate (12) is detachably connected to the open side of the shell (11), the cover plate (12) penetrates the mounting hole (121) for the insertion of the air collecting pipe (2), the outer wall of the air collecting pipe (2) is fixedly connected with a plurality of installation parts (201) distributed along the circumference, and the installation part (201) is detachably connected with the cover plate (12).

8. The exhaust treatment centrifugal fan of claim 1, wherein, Further comprising a base (8), two support plates (801) are symmetrically arranged on the base (8), the space between the two support plates (801) is used for the insertion of the bottom of the volute (1), and the two sides of the base (8) are respectively provided with a first support frame (802) and a second support frame (803), the first support frame (802) is provided with a first support groove (804) for placing the rotary motor (3), and the second support frame (803) is provided with a second support groove (805) for placing the air collecting pipe (2).

Images