CN212003775U - Centrifugal fan air inlet protector with air inlet volume adjusting structure - Google Patents
Centrifugal fan air inlet protector with air inlet volume adjusting structure Download PDFInfo
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- CN212003775U CN212003775U CN202020555680.4U CN202020555680U CN212003775U CN 212003775 U CN212003775 U CN 212003775U CN 202020555680 U CN202020555680 U CN 202020555680U CN 212003775 U CN212003775 U CN 212003775U
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- centrifugal fan
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Abstract
The utility model discloses a centrifugal fan air intake protector with air intake volume adjusts structure, including the protection network that admits air, the surface at the centrifugal fan body is installed to the protection network that admits air, the left and right sides fixed mounting of the protection network that admits air has fixed establishment, and is provided with the card axle on the fixed establishment, the inner wall of establishing at the centrifugal fan body is inserted to the card axle, the central point department of putting of the protection network that admits air is inserted and is equipped with the second pivot, and the surface of second pivot has cup jointed first gasket, the nut has been cup jointed at the back of second pivot. The utility model discloses be provided with air intake protection network and fixed establishment, through the increase air intake protection network before the air intake of centrifugal fan body, play the protection fan, filter the foreign matter, prevent the effect of incident, can realize the quick assembly disassembly to the air intake protection network through setting up rotatory second pivot and knob, through being provided with adjustment mechanism, rotate and revolve the cover, the convenience is adjusted the air input.
Description
Technical Field
The utility model relates to a centrifugal fan technical field specifically is a centrifugal fan air intake protector with air intake volume adjusts structure.
Background
The centrifugal fan is a general machine widely used in various departments of national economy, is a machine for increasing gas pressure and discharging gas by means of input mechanical energy, is a driven fluid machine, and is widely used for ventilation, dust exhaust and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and air induction of boilers and industrial kilns, cooling and ventilation in air conditioning equipment and household electrical equipment.
Centrifugal fan is that the air intake induced drafts, and the air outlet is aired exhaust, because centrifugal fan's pressure is great relatively, the air intake is open, will have some drawbacks, inhale the foreign matter easily and destroy the impeller, influence the life of fan, also can inhale staff's clothing, hair, arm cause the casualties simultaneously, have very big potential safety hazard, consequently need a centrifugal fan air intake protector with air intake volume adjusts the structure urgently to solve above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a centrifugal fan air intake protector with structure is adjusted to air intake volume to the pressure of the centrifugal fan who provides is great relatively in solving above-mentioned background art, and the air intake is open, will have some drawbacks, inhales the foreign matter easily and destroys the impeller, influences the life's of fan problem.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a centrifugal fan air intake protector with air intake volume adjusts structure, includes the protection network that admits air, the surface at the centrifugal fan body is installed to the protection network that admits air, the left and right sides fixed mounting that admits air the protection network has fixed establishment, and is provided with the card axle on the fixed establishment, the card axle is inserted and is established the inner wall at the centrifugal fan body, the central point department of putting of admitting air the protection network inserts and is equipped with the second pivot, and the surface of second pivot has cup jointed first gasket, the nut has been cup jointed at the back of second pivot, and the front of nut contacts with the surface of second gasket, the back fixed mounting of the protection network that admits air has the pipe, the back fixed mounting of the protection network that admits air has adjustment mechanism.
Preferably, fixed establishment includes knob, first pivot, fixture block, card axle, hinge bar and fixed block, the knob is inserted and is established the fixture block, and the left and right sides of fixture block articulates there is the card axle, the first pivot of back fixedly connected with of knob, and the back of first pivot is connected with the fixed block through the bearing frame transmission, the left and right sides of fixed block articulates there is the hinge bar, and the hinge bar articulates the inner wall at the card axle.
Preferably, a through hole is formed in the position, corresponding to the first rotating shaft, of the surface of the clamping block, an internal thread is arranged on the inner wall of the through hole, an external thread is assembled on the surface of the first rotating shaft, and the external thread of the first rotating shaft is matched with the internal thread of the clamping block.
Preferably, a clamping groove is formed in the position, corresponding to the clamping shaft, on the surface of the air inlet protective net, the inner wall of the clamping groove is in contact with the surface of the clamping shaft, and the clamping shaft is in clamping connection with the air inlet protective net.
Preferably, adjustment mechanism includes the pipe, revolves cover, stopper, outer axle, spring, interior pole, first gag lever post, folding cloth and second gag lever post, the surface of pipe is inserted and is equipped with the stopper, and the positive fixedly connected with of stopper revolves the cover, revolve the positive fixedly connected with outer axle in bottom of cover, and the left side of outer axle is inserted and is equipped with interior pole, the back fixedly connected with spring of interior pole, and the spring fixes the inner wall at outer axle, the positive fixedly connected with second gag lever post of interior pole, and the folding cloth of the positive fixedly connected with of second gag lever post, the first gag lever post of positive fixedly connected with of folding cloth, and the front of first gag lever post is fixed at the inner wall of the protection network that admits air.
Preferably, the surface of the inner rod is in contact with the inner wall of the outer shaft, and the inner rod is in telescopic connection with the outer shaft.
Preferably, a strip-shaped sliding groove is formed in the position, corresponding to the limiting block, of the surface of the guide pipe, and the guide pipe is in rotary connection with the limiting block.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses be provided with air intake protection network and fixed establishment, through the increase air intake protection network before the air intake of centrifugal fan body, play the protection fan, filter the foreign matter, prevent the effect of incident, can realize the quick assembly disassembly to the air intake protection network through setting up rotatory second pivot and knob, through being provided with adjustment mechanism, rotate and revolve the cover, the convenience is adjusted the air input.
(1) The utility model discloses be provided with air intake protection network and fixed establishment, through the increase air intake protection network before the air intake of centrifugal fan body, play the protection fan, filter the foreign matter, prevent the effect of the incident of freeing, the air intake protection network can effectually prevent that the foreign matter from inhaling, aperture evenly distributed on the protection network, can play turbulent effect to the air current, there is certain improvement to the performance of fan, can realize the quick assembly disassembly to the air intake protection network through setting up rotatory second pivot and knob, make things convenient for the dismantlement in later stage and the air intake protection network clearance, wash the inspection.
(2) The device rotates the cover soon through being provided with adjustment mechanism, changes the position of second gag lever post to make second gag lever post and first gag lever post expand, change the quantity of protection network surface air vent of admitting air, conveniently adjust the air input then.
Drawings
FIG. 1 is a schematic sectional view of the front view of the structure of the present invention;
FIG. 2 is a schematic right sectional view of the structure of the adjusting mechanism of the present invention;
fig. 3 is an enlarged schematic view of the structure at a in fig. 2 according to the present invention;
fig. 4 is a schematic top sectional view of the fixing mechanism structure of the present invention;
fig. 5 is a schematic front view of the air inlet protective screening and adjusting mechanism structure of the present invention. In the figure: 1. an air inlet protective net; 2. a centrifugal fan body; 3. a fixing mechanism; 31. a knob; 32. a first rotating shaft; 33. a clamping block; 34. clamping a shaft; 35. a hinged lever; 36. a fixed block; 4. an adjustment mechanism; 41. a conduit; 42. screwing a sleeve; 43. a limiting block; 44. an outer shaft; 45. a spring; 46. an inner rod; 47. a first limit rod; 48. folding the cloth; 49. a second limiting rod; 5. a second rotating shaft; 6. a first gasket; 7. a nut; 8. a second gasket.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides an embodiment:
a centrifugal fan air inlet protection device with an air inlet amount adjusting structure comprises an air inlet protective net 1, the air inlet protective net 1 is installed on the surface of a centrifugal fan body 2, fixing mechanisms 3 are fixedly installed on the left side and the right side of the air inlet protective net 1, clamping shafts 34 are arranged on the fixing mechanisms 3, each fixing mechanism 3 comprises a knob 31, a first rotating shaft 32, a clamping block 33, each clamping shaft 34, a hinge rod 35 and a fixing block 36, the knob 31 is inserted into the clamping block 33, through holes are formed in positions, corresponding to the first rotating shafts 32, on the surfaces of the clamping blocks 33, internal threads are formed in the inner walls of the through holes, external threads are assembled on the surfaces of the first rotating shafts 32, the external threads of the first rotating shafts 32 are matched with the internal threads of the clamping blocks 33, the knob 31 moves on the surfaces of the clamping blocks 33 in rotation, the clamping shafts 34 are pulled to move through the hinge rods 35, the disassembly and assembly of the related workers in the later period are facilitated, and the air inlet protective net 1 is cleaned.
The left side and the right side of the clamping block 33 are hinged with clamping shafts 34, the back of the knob 31 is fixedly connected with a first rotating shaft 32, the back of the first rotating shaft 32 is connected with a fixing block 36 through a bearing seat in a transmission mode, the left side and the right side of the fixing block 36 are hinged with hinged rods 35, the hinged rods 35 are hinged to the inner wall of the clamping shaft 34, clamping grooves are formed in the positions, corresponding to the clamping shafts 34, on the surface of the air inlet protective net 1, the inner wall of each clamping groove is in contact with the surface of the clamping shaft 34, the clamping shafts 34 are connected with the air inlet protective net 1 in a clamping mode and are matched with the second rotating shaft 5, the clamping shafts 34 are inserted into the surfaces of the air inlet protective net 1 and the centrifugal fan body 2, the air inlet protective net.
The clamping shaft 34 is inserted into the inner wall of the centrifugal fan body 2, a second rotating shaft 5 is inserted into the center position of the air inlet protective net 1, a first gasket 6 is sleeved on the surface of the second rotating shaft 5, a nut 7 is sleeved on the back surface of the second rotating shaft 5, the front surface of the nut 7 is in contact with the surface of a second gasket 8, an adjusting mechanism 4 is fixedly installed on the back surface of the air inlet protective net 1, a guide pipe 41 is arranged on the adjusting mechanism 4, the adjusting mechanism 4 comprises a guide pipe 41, a rotary sleeve 42, a limiting block 43, an outer shaft 44, a spring 45, an inner rod 46, a first limiting rod 47, a folded cloth 48 and a second limiting rod 49, the limiting block 43 is inserted into the surface of the guide pipe 41, a strip-shaped sliding groove is formed in the position of the surface of the guide pipe 41 corresponding to the limiting block 43, the connection relationship between the guide pipe 41 and the limiting block 43 is a rotary connection, the annular, the adjustment of the air inlet on the surface of the air inlet protective net 1 is influenced.
The front of the limiting block 43 is fixedly connected with a rotating sleeve 42, the front of the bottom end of the rotating sleeve 42 is fixedly connected with an outer shaft 44, the left side of the outer shaft 44 is inserted with an inner rod 46, the surface of the inner rod 46 is in contact with the inner wall of the outer shaft 44, the connection relation between the inner rod 46 and the outer shaft 44 is telescopic connection, under the elastic force of the spring 45, when a first limiting rod 47 and a second limiting rod 49 are unfolded, the elastic force of the spring 45 pushes the inner rod 46 to move, the inner rod 46 pushes a second limiting rod 49 to move in motion, so that the second limiting rod 49 is in contact with the surface of the air inlet protective net 1, the size of the air inlet protective net 1 is changed as required, the back of the inner rod 46 is fixedly connected with the spring 45, the spring 45 is fixed on the inner wall of the outer shaft 44, the front of the inner rod 46 is fixedly connected with the second limiting rod 49, the, and the front of the first limiting rod 47 is fixed on the inner wall of the air inlet protective screening 1.
The working principle is as follows: when the air inlet protective net is used, according to the attached drawings 1, 2 and 3, when the air inlet protective net is used, a worker places the second rotating shaft 5 in a central hole between the air inlet protective net 1 and the guide pipe 41, passes the first gasket 6 through the second rotating shaft 5 and places the first gasket 6 in the middle between the air inlet protective net 1 and the guide pipe 41, then uses the second gasket 8 and the nut 7 to be matched and fastened, simultaneously, the knob 31 is rotated, the knob 31 rotates the first rotating shaft 32 to pull the fixing block 36 to move, the fixing block 36 drives the clamping shaft 34 to move through the hinge rod 35 during the movement, so that the clamping shaft 34 clamps the air inlet protective net 1 with the centrifugal fan body 2, when the air inlet amount of the air inlet protective net 1 needs to be adjusted, the rotary sleeve 42 is rotated, the rotary sleeve 42 drives the limiting block 43 to slide in the annular chute on the surface of the guide pipe 41, the guide pipe 41 drives the outer shaft 44, the inner rod 46 drives the second limiting rod 49 to move in the movement process, the folded cloth 48 is unfolded in the movement process of the second limiting rod 49, the inner rod 46 is pushed to move under the elastic action of the spring 45, the inner rod 46 pushes the second limiting rod 49 to move, then the second limiting rod 49 is attached to the surface of the air inlet protective net 1, and a worker changes the size of an air inlet of the air inlet protective net 1 according to the rotating angle of the rotating rotary sleeve 42, so that the operation is finished.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (7)
1. The utility model provides a centrifugal fan air intake protector with structure is adjusted to air intake volume, includes air intake protection network (1), its characterized in that: the utility model discloses a centrifugal fan, including air inlet protective screen (1), card axle (34), nut (7) and pipe (41), the surface at centrifugal fan body (2) is installed to air inlet protective screen's (1) left and right sides fixed mounting has fixed establishment (3), and is provided with card axle (34) on fixed establishment (3), card axle (34) are inserted and are established the inner wall at centrifugal fan body (2), the central point department of putting of air inlet protective screen (1) is inserted and is equipped with second pivot (5), and the surface of second pivot (5) has cup jointed first gasket (6), nut (7) have been cup jointed at the back of second pivot (5), and the front of nut (7) contacts with the surface of second gasket (8), the back fixed mounting of air inlet protective screen (1) has adjustment mechanism (4), and is provided with pipe (41) on.
2. The air inlet protecting device of the centrifugal fan with the air inlet amount adjusting structure as claimed in claim 1, wherein: fixed establishment (3) include knob (31), first pivot (32), fixture block (33), card axle (34), hinge bar (35) and fixed block (36), knob (31) are inserted and are established fixture block (33), and the left and right sides of fixture block (33) articulates there is card axle (34), the first pivot (32) of back fixedly connected with of knob (31), and the back of first pivot (32) is connected with fixed block (36) through the bearing frame transmission, the left and right sides of fixed block (36) articulates there is hinge bar (35), and hinge bar (35) articulate the inner wall at card axle (34).
3. The air inlet protecting device of the centrifugal fan with the air inlet amount adjusting structure as claimed in claim 2, wherein: the surface of the clamping block (33) and the position corresponding to the first rotating shaft (32) are provided with through holes, inner threads are arranged on the inner wall of each through hole, outer threads are assembled on the surface of the first rotating shaft (32), and the outer threads of the first rotating shaft (32) are matched with the inner threads of the clamping block (33).
4. The air inlet protecting device of the centrifugal fan with the air inlet amount adjusting structure as claimed in claim 2, wherein: the air inlet protective net is characterized in that a clamping groove is formed in the position, corresponding to the clamping shaft (34), on the surface of the air inlet protective net (1), the inner wall of the clamping groove is in contact with the surface of the clamping shaft (34), and the clamping shaft (34) is connected with the air inlet protective net (1) in a clamping mode.
5. The air inlet protecting device of the centrifugal fan with the air inlet amount adjusting structure as claimed in claim 1, wherein: the adjusting mechanism (4) comprises a guide pipe (41), a rotary sleeve (42), a limiting block (43), an outer shaft (44), a spring (45), an inner rod (46), a first limiting rod (47), folding cloth (48) and a second limiting rod (49), the limiting block (43) is inserted on the surface of the guide pipe (41), the rotary sleeve (42) is fixedly connected with the front side of the limiting block (43), the outer shaft (44) is fixedly connected with the front side of the bottom end of the rotary sleeve (42), the inner rod (46) is inserted in the left side of the outer shaft (44), the spring (45) is fixedly connected with the back side of the inner rod (46), the spring (45) is fixed on the inner wall of the outer shaft (44), the second limiting rod (49) is fixedly connected with the front side of the inner rod (46), the folding cloth (48) is fixedly connected with the first limiting rod (47) in the front side of the folding cloth (48), and the front surface of the first limiting rod (47) is fixed on the inner wall of the air inlet protective net (1).
6. The air inlet protection device of the centrifugal fan with the air inlet amount adjusting structure as claimed in claim 5, wherein: the surface of the inner rod (46) is in contact with the inner wall of the outer shaft (44), and the inner rod (46) is in telescopic connection with the outer shaft (44).
7. The air inlet protection device of the centrifugal fan with the air inlet amount adjusting structure as claimed in claim 5, wherein: the position of the surface of the guide pipe (41) corresponding to the position of the limiting block (43) is provided with a strip-shaped sliding groove, and the connection relationship between the guide pipe (41) and the limiting block (43) is a rotary connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020555680.4U CN212003775U (en) | 2020-04-15 | 2020-04-15 | Centrifugal fan air inlet protector with air inlet volume adjusting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020555680.4U CN212003775U (en) | 2020-04-15 | 2020-04-15 | Centrifugal fan air inlet protector with air inlet volume adjusting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212003775U true CN212003775U (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020555680.4U Active CN212003775U (en) | 2020-04-15 | 2020-04-15 | Centrifugal fan air inlet protector with air inlet volume adjusting structure |
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| CN (1) | CN212003775U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074125A (en) * | 2021-04-19 | 2021-07-06 | 宿迁苏博科技信息有限公司 | Novel centrifugal fan |
-
2020
- 2020-04-15 CN CN202020555680.4U patent/CN212003775U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074125A (en) * | 2021-04-19 | 2021-07-06 | 宿迁苏博科技信息有限公司 | Novel centrifugal fan |
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