CN209244840U - A kind of horizontal filter of Roots blower - Google Patents

Abstract

The utility model discloses a kind of horizontal filters of Roots blower comprising a Roots blower, Roots blower include a casing, include the first air inlet and the first air outlet on casing, the first air inlet is equipped with a horizontal filter.The occupied space of Roots blower can be saved using horizontal type structure, it is compact-sized.Tapered cylinder design has good buffering noise reduction effect, and inlet flow rate regulating device can control the air quantity and noise reduction for achieving the purpose that reduce Roots blower air outlet into the air quantity in Roots blower.

Description

A kind of horizontal filter of Roots blower

Technical field

The utility model belongs to the technical field of Roots blower, the horizontal filter of especially a kind of Roots blower.

Background technique

Roots blower as a kind of typical gas boosting and conveying machinery, be widely used in building materials, electric power, smelting, The industries such as mine, aquaculture, sewage treatment, chemical industry.Its working principle is exactly that rely in casing two are intermeshing Impeller (two leaves or three leaves) makees contrary constant speed rotation by the effect of a pair of of synchromesh gear, passage by casing, wallboard and The gas in enclosed volume (element volume) that impeller surrounds, is constantly arranged to outlet from air inlet, to achieve the purpose that air blast.

The intake silencer of existing Roots blower only filtering, silencing function, and do not have control inlet flow rate and adjust Function, Roots blower can only work within the scope of firm discharge, and the scope of application is small, when needing to reduce Roots blower Air quantity generally reaches the air quantity for being lowered into Roots blower using the reduction of motor control wheel speed, but existing sieve Thatch air blower is all to use ordinary motor, and use variable-frequency motor somewhat expensive, not cost-effective.If increasing frequency conversion on motor Device can only also be adjusted the speed in positive and negative 10% or so of rated speed, and the service life that can also reduce motor is used for a long time.

Utility model content

In order to solve the problems of the above-mentioned prior art, the utility model proposes a kind of horizontal filters of Roots blower Clear device, occupies little space, compact-sized, can be controlled by controlling the turnover panel of entrance into the wind in Roots blower Amount achievees the purpose that reduce air quantity and noise reduction.

The technical solution of the utility model is achieved in that

A kind of horizontal filter of Roots blower a comprising Roots blower, the Roots blower include a machine Shell, the casing is interior to be equipped with impeller assembly, and the impeller assembly includes first rotating shaft and the second shaft, is pacified in the first rotating shaft Equipped with driven wheel, first bearing, active impeller and driving gear, driven impeller, driven gear are installed in second shaft And second bearing, which is characterized in that include the first air inlet and the first air outlet on the casing, set on first air inlet There is a horizontal filter, the horizontal filter is a tapered cylinder, opens up the second air inlet and second on the tapered cylinder Air outlet, second air inlet are equipped with inlet flow rate regulating device and mounting plate, are equipped with noise reduction at second air outlet Layer, second air inlet hole are long lumbar hole shape, and the mounting plate is equipped with circular through hole, and the inlet flow rate regulating device includes One pin shaft, plectane and rotation key, the plectane are mounted on the pin shaft by bolt, and the rotation key is mounted on the pin shaft One end, the pin shaft can be rotatably set in the mounting plate, and the plectane is located in the circular through hole.

In the horizontal filter of this Roots blower of the utility model, the middle part of the pin shaft is equipped with open slot, The length of the open slot is equal with the diameter of the plectane, and the plectane is caught in the open slot, and is installed by bolt On the pin shaft.

In the horizontal filter of this Roots blower of the utility model, first air outlet is two.

In the horizontal filter of this Roots blower of the utility model, first air inlet and the second air outlet Pass through flanged joint.

In the horizontal filter of this Roots blower of the utility model, the plectane is three, and between plectane It is parallel to each other.

The horizontal filter for implementing this Roots blower of the utility model has the advantages that using horizontal Structure can save the occupied space of Roots blower, compact-sized.Tapered cylinder design has good buffering noise reduction effect, Inlet flow rate regulating device can control the air quantity for reaching into the air quantity in Roots blower and reducing Roots blower air outlet And the purpose of noise reduction.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the horizontal filter of this Roots blower of the utility model；

Fig. 2 is another direction schematic diagram of Fig. 1；

Fig. 3 is the diagrammatic cross-section of Fig. 2, and impeller assembly is omitted；

Fig. 4 is the diagrammatic cross-section of the horizontal filter of Fig. 3；

Fig. 5 is the structural schematic diagram of impeller assembly；

Fig. 6 is the structural schematic diagram of inlet flow rate regulating device in Fig. 2.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe.

The horizontal filter of this Roots blower of the utility model as shown in Figures 1 to 6 comprising Roots drum Blower 11, Roots blower 11 include a casing 12, and impeller assembly 13 is equipped in casing 12, and impeller assembly 13 includes first rotating shaft 131 and second shaft 132, driven wheel 133, first bearing 134, active impeller 135 and driving tooth are installed in first rotating shaft 131 136 are taken turns, driven impeller 137, driven gear 138 and second bearing 139 are installed in the second shaft 132.

Using helical gear engaged transmission between driving gear 136 and driven gear 138, in the case where guaranteeing to be driven effect Inner space is reduced, relative to spur gear, helical gear also has axial force, so that helical speed reduction gear has bearing capacity High, the features such as transmission stability is good, with small vibration.Used between active impeller 135 and driven impeller 137 helical angle for 60 ° three Leaf impeller, respectively left-hand screw and right-hand screw, impeller use solid paddlewheel.Potential vibration is reduced, compared with hollow impeller, With dynamically balanced characteristic is kept, the disadvantage of hollow impeller is to be easily accessible impurity dust in impeller bore, and impeller is easy to lose Balance, and generate vibration.

It include the first air inlet 121 and the first air outlet 122 on casing 12, preferably, the first air outlet 122 is two. Air quantity in Roots blower 11 can be shunted, reduce the air quantity of the air outlet of air blower.It is set on first air inlet 121 There is a horizontal filter 14, horizontal filter 14 is a tapered cylinder, opens up the second air inlet 141 and second on tapered cylinder and goes out Air port 142, the first air inlet 121 and the second air outlet 142 pass through flanged joint.Tapered cylinder from the second air inlet 141 to interior, Opening is gradually reduced, and gas recycles in tapered cylinder along the inclined-plane of tapered cylinder and radian area 143, then passes through noise reduction Layer 144 enters Roots blower 11, and the inner wall of tapered cylinder is smooth inner wall, is effectively reduced the flowing resistance of the air of entrance Power, while the pulse of the air of entrance is mitigated, reduce noise.

It is equipped with inlet flow rate regulating device 15 and mounting plate 145 at second air inlet 141, is equipped at the second air outlet 142 Noise reduction layer 144, noise reduction layer 144 are made of sound-absorbing material, and uniform array has multiple through-holes thereon.Since noise reduction layer 144 is porous Structure, sound can be during penetrable materials, with surrounding medium friction, and You Shengneng is converted to thermal energy, and sound can be depleted, sound quilt Material absorbs, to effectively reduce sound wave transmitting, reduces air blower and enters the wind noise.

Second air inlet hole 141 is long lumbar hole shape, and mounting plate 145 is equipped with circular through hole 146, inlet flow rate regulating device 15 Including a pin shaft 151, plectane 152 and rotation key 153, plectane 152 is mounted on pin shaft 151 by bolt, and rotation key 153 is installed In one end of pin shaft 151, pin shaft 151 be can be rotatably set in mounting plate 145, and plectane 152 is located in circular through hole 146.Pin The middle part of axis 151 is equipped with open slot 154, and the length of open slot 154 is equal with the diameter of plectane 152, and plectane 152 is caught in open slot In 154, and it is mounted on pin shaft 151 by bolt.Only needing to remove on bolt can opening by plectane 152 from pin shaft 151 It is extracted out in slot 154, it is convenient for disassembly and assembly between plectane 152 and pin shaft 151, it is easy to repair.Plectane 1552 be three, and plectane 152 it Between it is parallel to each other, i.e. 154 direction of open slot of pin shaft 151 is consistent, cause it is parallel to each other between plectane 152, adjust rotation key When 153, the air inlet flow of the second air inlet 141 of control can be facilitated to the adjusting together of all plectanes 152.

Angle by adjusting plectane 152 controls the gas flow entered in horizontal filter 14, and gas enters All it is to enter when horizontal filter 14 from circular through hole 146, is influenced that oblique horizontal filter can be entered by plectane 152 14, it is contacted with the inner wall of tapered cylinder, is delayed under the action of horizontal filter 14 is with radian and smooth inner wall Punching passes through noise reduction layer 144 and enters in Roots blower 11, achievees the purpose that control air blower air-out flow and noise reduction.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, made any modification, equivalent replacement and improvement etc. should be included in the utility model Protection scope within.

Claims (5)

1. a kind of horizontal filter of Roots blower comprising a Roots blower, the Roots blower include a casing, Impeller assembly is equipped in the casing, the impeller assembly includes first rotating shaft and the second shaft, is installed in the first rotating shaft Have driven wheel, first bearing, active impeller and driving gear, be equipped in second shaft driven impeller, driven gear and Second bearing, which is characterized in that include the first air inlet and the first air outlet on the casing, first air inlet is equipped with One horizontal filter, the horizontal filter are a tapered cylinder, open up the second air inlet and second on the tapered cylinder and go out Air port, second air inlet are equipped with inlet flow rate regulating device and mounting plate, are equipped with noise reduction layer at second air outlet, Second air inlet hole is long lumbar hole shape, and the mounting plate is equipped with circular through hole, and the inlet flow rate regulating device includes one Pin shaft, plectane and rotation key, the plectane are mounted on the pin shaft by bolt, and the rotation key is mounted on the pin shaft One end, the pin shaft can be rotatably set in the mounting plate, and the plectane is located in the circular through hole.

2. horizontal filter according to claim 1, which is characterized in that the middle part of the pin shaft is equipped with open slot, described The length of open slot is equal with the diameter of the plectane, and the plectane is caught in the open slot, and is mounted on institute by bolt It states on pin shaft.

3. horizontal filter according to claim 1, which is characterized in that first air outlet is two.

4. horizontal filter according to claim 1, which is characterized in that first air inlet and the second air outlet pass through Flanged joint.

5. horizontal filter according to claim 1, which is characterized in that the plectane is three, and between plectane mutually In parallel.