CN217080892U - Diffuser of centrifugal pump - Google Patents

Abstract

The utility model discloses a centrifugal pump diffuser in the technical field of diffusers, which comprises a diffuser base and a diffuser top plate, wherein a plurality of diffuser blades are uniformly arranged on the top of the diffuser top plate, an adjusting lug plate is welded on one side of each diffuser blade, a supporting sleeve is arranged at the bottom of the diffuser top plate, a synchronous bracket is sleeved on the outer wall of the supporting sleeve, and an adjusting component is arranged between one of the diffuser blades on the top of the diffuser top plate, the utility model can drive other diffuser blades to synchronously adjust the angle through a series of mechanical transmission by adjusting the adjusting component to rotate the diffuser blade connected with the adjusting component around a countersunk bolt connected with the diffuser top plate, and ensures that the angle of each diffuser blade is the same, and meanwhile, the angle of each diffuser blade cannot be changed due to the action of the centrifugal force of the diffuser, the stability of the diffuser blade in the working process is ensured.

Description

Diffuser of centrifugal pump

Technical Field

The utility model relates to a diffuser technical field specifically is a centrifugal pump diffuser.

Background

The diffuser is a device which is generated by a centrifugal compressor and converts static pressure energy by means of kinetic energy. The absolute velocity of the air flow at the outlet of the centrifugal compressor impeller C2 is typically 200-300 m/s. The air flow speed of the impeller of the high-energy head can reach more than 500 m/s. This part of the kinetic energy is a considerable proportion of the total head of energy given to the gas by the impeller. For example, a radial straight blade type impeller accounts for 50% and a water pump type fire compressor type impeller also accounts for 25% -40%, so this part of kinetic energy must be efficiently converted into static pressure energy, which is the task of a diffuser. The diffuser also serves to collect and extract gases.

For example, chinese patent application No. CN202122184003.3 discloses an adjustable diffuser, which includes the following specific contents: an adjustable diffuser comprises a mounting disc, wherein a fixing ring is fixedly connected to the outer surface of the mounting disc, a plurality of rotating shafts are fixedly connected to the front surface of the mounting disc, blades are rotatably connected to the outer surface of the rotating shafts, a plurality of adjusting assemblies are arranged on the fixing ring, and limiting assemblies are arranged on the adjusting assemblies; the adjusting component comprises a screw rod in threaded connection with the fixing ring, and the screw rod is close to one end of the inner side of the fixing ring and is fixedly connected with a bearing seat. This diffuser with adjustable, through be equipped with a plurality of adjusting part that are used for connecting the blade on solid fixed ring, can drive the blade and carry out the angle modulation to do the adaptability to blade airflow cross-section and adjust, the suitability is higher, it is simple and convenient to adjust, convenient to use, through be equipped with spacing subassembly on solid fixed ring and adjusting part, after the adjusting part regulation finishes, the spacing subassembly of accessible carries on spacingly to adjusting part, avoid the in-process of this diffuser work, the self-moving phenomenon appears in the adjusting part, improve the stability after the regulation.

For example, chinese patent application No. CN202022980764.5 discloses an adjusting mechanism of an air compressor diffuser, which comprises the following specific contents: the utility model provides an adjustment mechanism of air compressor diffuser, includes the diffuser body, the blade has been cup jointed through the axle activity in the top of diffuser body, the shifting chute has been seted up at the top of diffuser body, the connecting rod that is located the shifting chute inner chamber has been cup jointed in the rear side activity of blade, the connecting plate has been cup jointed in the bottom activity of connecting rod, the rotary drum has been cup jointed through the axle activity in the rear side of connecting plate. This adjustment mechanism of air compressor machine diffuser drives the rotary drum rotatory in the inner chamber of diffuser body through promoting the push pedal, because utilize connecting rod and connecting plate swing joint between rotary drum and the blade, can drive the blade when the rotary drum of being convenient for is rotatory along the axle of this body coupling with the diffuser to adjust the angle of blade on the diffuser body top, fine satisfying fan regulation on the performance, the loss that makes on the air current reduces to the minimum.

Wherein, diffuser with adjustable chinese patent application No. CN202122184003.3 discloses, although can carry out the adjustment of diffuser blade angle according to the demand, but need every blade all to adjust alone, it is comparatively loaded down with trivial details, and the angle homogeneous phase that can't make every blade adjustment, to, chinese patent application No. CN202022980764.5 discloses an adjustment mechanism of air compressor diffuser, but its fixed elastic force that passes through the spring to the position promotes the fixture block and fixes the mode of gear chucking, at the work pivoted in-process of diffuser, can cause the phenomenon that the fixture block breaks away from the gear because of the effect of centrifugal force down, thereby cause the change of blade angle because of the effect of centrifugal force, influence the normal work of diffuser, based on this, the utility model designs a centrifugal pump, in order to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a centrifugal pump diffuser to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a centrifugal pump diffuser comprises a diffuser base and a diffuser top plate, wherein the diffuser top plate is installed at the top of the diffuser base, a plurality of diffuser blades are evenly installed at the top of the diffuser top plate through countersunk bolts, an adjusting lug plate is welded at one side of each diffuser blade, a plurality of arc-shaped guide sliding grooves matched with the diffuser blades are evenly formed in the top of the diffuser top plate, a supporting sleeve is arranged at the bottom of the diffuser top plate, a synchronous support is sleeved on the outer wall of the supporting sleeve and comprises a fixed sleeve ring sleeved on the outer wall of the supporting sleeve, a plurality of driving rocker arms matched with the diffuser blades are evenly arranged on the outer wall of the fixed sleeve ring, limiting sliding grooves are formed in the driving rocker arms, limiting pin rods are vertically installed between the limiting sliding grooves and the adjusting lug plates and penetrate through inner cavities of the arc-shaped guide sliding grooves, and the top of the diffuser top plate is provided with a regulating component between one of the diffuser blades.

Preferably, the adjusting part includes the connection otic placode of welding at diffuser blade lateral wall, and the connection otic placode sets up with the regulation otic placode relatively to and through the support otic placode of bolt fastening at diffuser roof top, the lateral wall welding of support otic placode has set nut, the outer end of connection otic placode has U type link through round pin axle movable mounting, adjusting screw is installed to set nut's inner chamber, and adjusting screw's the inner lateral wall that runs through the support otic placode passes through bearing swing joint with the lateral wall of U type link, adjust knob is installed to adjusting screw's outer end.

Preferably, wear-resisting bearings are installed at the joints of the fixed lantern rings and the supporting sleeves, and a plurality of positioning clamping grooves are uniformly formed in the inner cavity of each fixed lantern ring.

Preferably, the outer side of the wear-resistant bearing is uniformly provided with a positioning lug matched with the positioning clamping groove, and the positioning lug and the positioning clamping groove are in interference fit.

Preferably, the inner cavity of the diffuser base is uniformly provided with U-shaped positioning blocks, and fixing bolts connected with the diffuser top plate are installed in the inner cavity of each U-shaped positioning block.

Preferably, the bottom of diffuser roof evenly is provided with the U type cardboard with U type locating piece matched with, and the outer wall at U type locating piece can be established to the card of U type cardboard, the fixed screw with fixing bolt screw thread end matched with is seted up at the inner chamber of U type cardboard in the bottom of diffuser roof.

Preferably, the top of one end of the diffuser blade is provided with a limiting jack matched with the countersunk head bolt, the limiting jack is in clearance fit with the threaded end of the countersunk head bolt, and the top of the diffuser top plate is provided with a positioning screw hole matched with the threaded end of the countersunk head bolt.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model adjusts the diffuser blades connected with the diffuser blades to rotate around the countersunk head bolt connected with the diffuser top plate through the adjusting component, the side diffuser blades can drive the limiting pin rod on the adjusting lug plate to slide in the inner cavity of the arc-shaped guide chute, when the motion of the side limiting pin rod can slide in the inner cavity of the limiting chute, thereby pushing the rotation of the driving rocker arm, the rotation of the driving rocker arm pushes the rotation of the fixed lantern ring, the rotation of the fixed lantern ring drives the rotation of other driving rocker arms, the rotation of other driving rocker arms drives the rotation of other limiting pin rods, the rotation of other limiting pin rods drives other diffuser blades to synchronously adjust the angle, is convenient, ensures that the adjustment angle of each diffuser blade is the same, simultaneously can not cause the change of the angle of the blade due to the action of the centrifugal force of the diffuser, and ensures the stability of the diffuser blades in the working process, and normal operation of the diffuser.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of part A of the present invention;

fig. 3 is a bottom perspective view of a diffuser top plate according to the present invention;

fig. 4 is a front perspective view of the diffuser base of the present invention;

fig. 5 is a schematic view of the structure of the synchronous support of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-a diffuser base, 11-a U-shaped positioning block, 12-a fixing bolt, 2-a diffuser top plate, 21-a U-shaped clamping plate, 22-a fixing screw hole, 3-a diffuser blade, 4-an adjusting lug plate, 5-an arc-shaped guide sliding groove, 6-a supporting sleeve, 7-a synchronous support, 71-a fixing lantern ring, 72-a driving rocker arm, 73-a limiting sliding groove, 74-a positioning clamping groove, 8-a limiting pin rod, 9-a wear-resistant bearing, 101-a connecting lug plate, 102-a supporting lug plate, 103-a positioning nut, 104-a U-shaped connecting frame, 105-an adjusting screw rod and 106-an adjusting knob.

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-5, in order to adjust the angle of the diffuser blades 3 synchronously and make the angles adjusted by the plurality of diffuser blades 3 the same, the present invention provides a technical solution: a centrifugal pump diffuser comprises a diffuser base 1 and a diffuser top plate 2, wherein the diffuser top plate 2 is installed at the top of the diffuser base 1, a plurality of diffuser blades 3 are evenly installed at the top of the diffuser top plate 2 through countersunk bolts, an adjusting lug plate 4 is welded at one side of each diffuser blade 3, a plurality of arc-shaped guide chutes 5 matched with the diffuser blades 3 are evenly formed in the top of the diffuser top plate 2, a supporting sleeve 6 is arranged at the bottom of the diffuser top plate 2, a synchronizing bracket 7 is sleeved on the outer wall of the supporting sleeve 6, each synchronizing bracket 7 comprises a fixed sleeve ring 71 sleeved on the outer wall of the supporting sleeve 6, a plurality of driving rocker arms 72 matched with the diffuser blades 3 are evenly arranged on the outer wall of the fixed sleeve ring 71, limiting chutes 73 are formed in the driving rocker arms 72, and limiting pin rods 8 are vertically installed between the limiting chutes 73 and the adjusting lug plates 4, the limiting pin rod 8 penetrates through the inner cavity of the arc-shaped guide chute 5, an adjusting component is arranged at the top of the diffuser top plate 2 between one of the diffuser blades 3, the adjusting component comprises a connecting lug plate 101 welded on the side wall of the diffuser blade 3, the connecting lug plate 101 is arranged opposite to the adjusting lug plate 4, and a supporting lug plate 102 fixed at the top of the diffuser top plate 2 through bolts, a positioning nut 103 is welded on the side wall of the supporting lug plate 102, a U-shaped connecting frame 104 is movably arranged at the outer end of the connecting lug plate 101 through a pin shaft, an adjusting screw 105 is arranged in the inner cavity of the positioning nut 103, the inner end of the adjusting screw 105 penetrates through the side wall of the supporting lug plate 102 and is movably connected with the side wall of the U-shaped connecting frame 104 through a bearing, an adjusting knob 106 is arranged at the outer end of the adjusting screw 105, the adjusting knob 106 is screwed to drive the adjusting screw 105 to rotate, and the adjusting screw 105 and the positioning nut 103 act through the rotation of the adjusting screw 105, the extension length of the adjusting screw 105 in the inner cavity of the positioning nut 103 is adjusted, so that the adjusting screw 105 can push the U-shaped connecting frame 104 to slide, the U-shaped connecting frame 104 is movably connected with the connecting lug plate 101 through a pin shaft, so that the U-shaped connecting frame 104 can push the diffuser blades 3 connected with the connecting lug plate 101 to rotate, the diffuser blades 3 connected with the connecting lug plate 101 are adjusted to rotate around the countersunk bolts connected with the diffuser top plate 2, the diffuser blades 3 at the side can drive the limiting pin rods 8 on the adjusting lug plate 4 to slide in the inner cavity of the arc-shaped guide chute 5, when the limiting pin rods 8 at the side move, the limiting pin rods can slide in the inner cavity of the limiting chute 73, so that the rotation of the driving rocker arm 72 is pushed to push the rotation of the fixing sleeve ring 71, the rotation of other driving rocker arms 72 is driven by the rotation of the fixing sleeve ring 71, and the rotation of other driving rocker arms 72 is driven to rotate other limiting pin rods 8, the rotation of other limiting pin rods 8 drives other diffuser blades 3 to synchronously adjust the angle, which is more convenient, ensures that the adjustment angle of each diffuser blade 3 is the same, simultaneously does not cause the change of the angle of the diffuser blade 3 due to the action of the centrifugal force of the diffuser during working, and ensures the stability of the diffuser blades 3 during the working process and the normal working of the diffuser;

in order that the diffuser blade 3 can rotate at the top of the diffuser top plate 2, the top of one end of the diffuser blade 3 is provided with a limiting insertion hole matched with the countersunk bolt, the limiting insertion hole is in clearance fit with the threaded end of the countersunk bolt, the top of the diffuser top plate 2 is provided with a positioning screw hole matched with the threaded end of the countersunk bolt, the diffuser blade 3 can be pushed to rotate around the threaded end of the diffuser top plate 2 by utilizing the clearance fit of the limiting insertion hole and the threaded end of the countersunk bolt, and the positioning screw hole is arranged to facilitate the positioning and installation of the countersunk bolt on the diffuser top plate 2;

as shown in fig. 3 and 5, in order to reduce the wear between the synchronizing bracket 7 and the supporting sleeve 6 and to position and mount the synchronizing bracket 7, a wear-resistant bearing 9 is mounted at the joint between the fixed sleeve ring 71 and the supporting sleeve 6, the wear-resistant bearing 9 is arranged to reduce the rotational wear between the fixed sleeve ring 71 and the supporting sleeve 6, a plurality of positioning slots 74 are uniformly formed in the inner cavity of the fixed sleeve ring 71, positioning lugs matched with the positioning slots 74 are uniformly arranged on the outer side of the wear-resistant bearing 9, the positioning lugs are in interference fit with the positioning slots 74, and the positioning slots 74 can be clamped on the outer walls of the positioning lugs, so that the synchronizing bracket 7 can be conveniently positioned and mounted on the wear-resistant bearing 9;

as shown in fig. 3 and 4, for the positioning installation between the diffuser base 1 and the diffuser top plate 2, the inner cavity of the diffuser base 1 is uniformly provided with U-shaped positioning blocks 11, the inner cavity of the U-shaped positioning blocks 11 is provided with fixing bolts 12 connected with the diffuser top plate 2, the bottom of the diffuser top plate 2 is uniformly provided with U-shaped snap-gauge 21 matched with the U-shaped positioning blocks 11, and U type cardboard 21 can block and establish the outer wall at U type locating piece 11, utilize U type cardboard 21 to block and establish the outer wall at U type locating piece 11, make things convenient for the locator card between diffuser roof 2 and the diffuser base 1 to establish as an organic whole, the fixed screw hole 22 that matches with 12 threaded ends of fixing bolt is seted up at the inner chamber of U type cardboard 21 in the bottom of diffuser roof 2, utilize the connection between 12 threaded ends of fixing bolt and fixed screw hole 22, make diffuser base 1 and diffuser roof 2 can fix as a whole.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, thereby enabling others skilled in the art to best understand the invention and its practical application. The present invention is limited only by the claims and their full scope and equivalents.

Claims (7)

1. The utility model provides a centrifugal pump diffuser, includes diffuser base (1) and diffuser roof (2), and diffuser roof (2) install the top at diffuser base (1), a plurality of diffuser blades (3) are evenly installed through countersunk bolt in the top of diffuser roof (2), one side welding of diffuser blade (3) has regulation otic placode (4), a plurality of and diffuser blade (3) matched with arc direction spout (5), its characterized in that have evenly been seted up at the top of diffuser roof (2): the bottom of diffuser roof (2) is provided with supporting sleeve (6), the outer wall cover of supporting sleeve (6) is equipped with synchronizing bracket (7), synchronizing bracket (7) are established fixed lantern ring (71) at supporting sleeve (6) outer wall including the cover, the outer wall of fixed lantern ring (71) evenly is provided with a plurality of and diffuser blade (3) matched with drive rocking arm (72), spacing spout (73) have been seted up to the inside of drive rocking arm (72), vertically between spacing spout (73) and regulation otic placode (4) install spacing pin rod (8), and spacing pin rod (8) pass the inner chamber setting of arc direction spout (5), the top of diffuser roof (2) is provided with adjusting part between one of them diffuser blade (3).

2. A centrifugal pump diffuser according to claim 1, wherein: adjusting part is including welding connection otic placode (101) at diffuser blade (3) lateral wall, and connection otic placode (101) and regulation otic placode (4) set up relatively to and support otic placode (102) at diffuser roof (2) top through the bolt fastening, the lateral wall welding of support otic placode (102) has set nut (103), the outer end of connecting otic placode (101) has U type link (104) through round pin axle movable mounting, adjusting screw (105) are installed to the inner chamber of set nut (103), and the inner of adjusting screw (105) runs through the lateral wall of support otic placode (102) and the lateral wall of U type link (104) and pass through bearing swing joint, adjust knob (106) are installed to the outer end of adjusting screw (105).

3. A centrifugal pump diffuser according to claim 1, wherein: wear-resisting bearing (9) are installed to the junction of fixed lantern ring (71) and support sleeve (6), and a plurality of positioning channel groove (74) have evenly been seted up to the inner chamber of fixed lantern ring (71).

4. A centrifugal pump diffuser according to claim 3, wherein: the outer side of the wear-resistant bearing (9) is uniformly provided with positioning convex blocks matched with the positioning clamping grooves (74), and the positioning convex blocks and the positioning clamping grooves (74) are in interference fit.

5. A centrifugal pump diffuser according to claim 1, wherein: the inner cavity of the diffuser base (1) is uniformly provided with U-shaped positioning blocks (11), and fixing bolts (12) connected with the diffuser top plate (2) are installed in the inner cavity of the U-shaped positioning blocks (11).

6. A centrifugal pump diffuser according to claim 5, wherein: the bottom of diffuser roof (2) evenly is provided with U type cardboard (21) with U type locating piece (11) matched with, and U type cardboard (21) can block and establish the outer wall at U type locating piece (11), fixed screw (22) that cooperate with fixing bolt (12) screw thread end are seted up at the inner chamber of U type cardboard (21) in the bottom of diffuser roof (2).

7. A centrifugal pump diffuser according to claim 1, wherein: the limiting insertion hole matched with the countersunk head bolt is formed in the top of one end of the diffuser blade (3), the limiting insertion hole is in clearance fit with the thread end of the countersunk head bolt, and the positioning screw hole matched with the thread end of the countersunk head bolt is formed in the top of the diffuser top plate (2).

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