CN210977987U

CN210977987U - Fan shell

Info

Publication number: CN210977987U
Application number: CN201922053432.XU
Authority: CN
Inventors: 王学海
Original assignee: Hebei Hanover Environmental Protection Machinery Co ltd
Current assignee: Hebei Hanover Environmental Protection Machinery Co ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-07-10
Anticipated expiration: 2029-11-25

Abstract

The utility model belongs to the technical field of fan manufacturing, in particular to a fan casing, which comprises a volute casing plate, a front side plate, a rear side plate and a mounting seat; the front side plate and the rear side plate are respectively connected with two sides of the volute plate, and the mounting seat is respectively connected with the front side plate and the rear side plate; the front side plate and the rear side plate are integrally formed parts, a fan shaft hole and front profiling grooves are formed in the front side plate, and the front profiling grooves are distributed on the front side plate at intervals; the rear side plate is provided with an air inlet and rear compression grooves, the circle center of the air inlet is collinear with the center of the fan shaft hole, and the rear compression grooves are distributed on the rear side plate at intervals; the outlets of the front side plate, the rear side plate and the volute plate are enclosed to form an air outlet of the fan shell. The utility model discloses the total weight of curb plate reduces by a wide margin when satisfying fan intensity requirement, has practiced thrift material cost, has reduced the weight of fan, and the preceding curb plate that adopts the die mould technology to prepare and the surface smoothness of posterior lateral plate are better, have prolonged the life of fan casing effectively.

Description

Fan shell

Technical Field

The utility model belongs to the technical field of the fan is made, concretely relates to fan casing.

Background

In the fan industry, the manufacturing process of the shell basically has no substantial change after the technology is introduced from the Soviet Union in the 70 s, namely, the process assembly of numerical control blanking, spot welding connection, welding forming, shaping, reinforcing rib reinforcement, grinding, painting and the like is adopted; the process is suitable for medium-sized fans and small fans, but the process for manufacturing the fan shell of the medium-sized fans and the small fans needs frequent material cutting and welding, wastes a large amount of labor and material cost, has low production efficiency, and has great influence on the strength of the fan shell due to more welding parts; moreover, the fan casing welded and produced in the prior art is generally thicker in thickness and heavier in weight, and brings great burden to fan manufacturers.

Therefore, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art for 6# -16# blower housings.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fan casing to solve present fan casing production efficiency low, manufacturing cost is higher, the heavier problem of fan casing weight.

In order to achieve the above object, the present invention provides the following technical solutions:

a fan casing comprises a volute casing plate, a front side plate, a rear side plate and a mounting seat.

Specifically, the front side plate and the rear side plate are respectively connected with two sides of the volute plate, and the mounting seat is respectively connected with the front side plate and the rear side plate and used for supporting the fan; the front side plate and the rear side plate are both integrally formed parts, a fan shaft hole and front profiling grooves are formed in the front side plate, and the front profiling grooves are distributed on the front side plate at intervals; the rear side plate is provided with an air inlet and rear profiling grooves, the circle center of the air inlet is collinear with the center of the fan shaft hole, and the rear profiling grooves are distributed on the rear side plate at intervals; the front side plate, the rear side plate and the outlet of the volute plate enclose to form an air outlet of the fan shell.

In the blower casing as described above, as a preferable scheme, the front profiling groove is recessed in an outer surface of the front side plate, the front profiling groove includes a front annular groove and a front outer reinforcing groove, the front annular groove is coaxial with the blower shaft hole, and an inner diameter of the front annular groove is larger than an inner diameter of the blower shaft hole; preceding outside reinforcing groove includes preceding rectangle recess and preceding arc recess, at least two preceding rectangle recess is followed the linear direction interval distribution of air outlet, preceding arc recess distributes keep away from on the preceding curb plate one side of air outlet, and distribute along the spiral line direction of fan.

In the blower housing as described above, as a preferred scheme, the rear pressing groove is recessed in the outer surface of the rear side plate, the rear pressing groove includes a rear rectangular groove and a rear arc groove, at least two of the rear rectangular grooves are distributed at intervals along the linear direction of the air outlet, and the rear arc groove is distributed on the rear side plate on a side away from the air outlet and is distributed along the direction of the spiral line of the blower.

In the blower housing as described above, as a preferable scheme, the mounting base includes support legs and a support frame, the support frame is disposed on the ground, and the blower housing is connected to the support frame through the support legs; the supporting legs are arranged in two groups, one group of supporting legs of the mounting seat is welded on the front side plate in a preset included angle, and the other group of supporting legs of the mounting seat is correspondingly welded on the rear side plate; the landing leg with for dismantling between the carriage and be connected, the landing leg includes fixed part and connecting portion, the fixed part with preceding curb plate or posterior lateral plate welding together, connecting portion cup joint in the fixed part, connecting portion can for the fixed part is flexible freely, the fixed part lateral wall is provided with fastening bolt, fastening bolt passes the lateral wall of fixed part and top tightly are in the surface of connecting portion, thereby it is fixed connecting portion.

In the blower casing, as a preferable scheme, sound-absorbing materials are laid on the outer surfaces of the front side plate and the rear side plate; preferably, the sound-absorbing material is polyester fiber sound-absorbing cotton.

In the blower housing as described above, as a preferred scheme, a plurality of positioning angle codes are arranged at intervals along the vicinity of the contour line on the inner sides of the front side plate and the rear side plate, one side of each positioning angle code is in close contact with the front side plate or the rear side plate, the other side of each positioning angle code is perpendicular to the front side plate or the rear side plate, a positioning screw hole is arranged on the other side of each positioning angle code, a positioning bolt is screwed into the positioning screw hole, and the positioning bolt heads on the plurality of positioning angle codes are located on the contour line where the inner surface of the volute plate is located.

The utility model also provides a manufacturing approach of above-mentioned fan casing, including following step:

s1, blanking, namely cutting steel plates with proper sizes according to the size of the fan shell to serve as raw materials of a front side plate, a rear side plate and a volute plate;

s2, using a profiling mold to perform integral cold-pressing profiling on the raw materials of the front side plate and the rear side plate respectively, so that front profiling grooves and rear profiling grooves are distributed on the front side plate and the rear side plate respectively;

s3, bending the volute plate, and bending the cut volute plate raw material to obtain a finished volute plate product;

s4, connecting the front side plate and the rear side plate which are well pressed with the two sides of the bent volute plate respectively to form a fan shell;

s5, vibration aging, namely placing the fan shell obtained in the step S4 on a vibration instrument for vibration aging treatment to eliminate internal stress in the fan shell;

and S6, coating, and spraying and decorating the fan shell subjected to the vibration aging treatment in the S5 to obtain a finished product of the fan shell.

In the manufacturing method of the blower housing as described above, it is preferable that the pressing mold in S2 is a split mold including an upper mold, a lower mold and a pressing core.

Specifically, the upper die is covered on the lower die, an upper die groove is formed in the lower surface of the upper die, and a lower die groove corresponding to the upper die groove is formed in the upper surface of the lower die; the two ends of the compression core are respectively provided with an installation part and a compression part, the external dimension of the installation part is matched with the dimensions of the upper die groove and the lower die groove, the bottom of the upper die groove and the bottom of the lower die groove are provided with compression core connecting holes, and the compression core is provided with through countersunk holes from the end surface of the compression part to the end surface of the installation part; the position of the countersink corresponds to the position of the connecting hole of the die core when the die core is mounted in the upper die groove or the lower die groove; after the press core is installed in the upper mold groove or the lower mold groove, the press part protrudes out of the surface of the upper mold or the lower mold, and when the upper mold and the lower mold are closed, the press core and the corresponding mold groove form a press groove on the front side plate or the rear side plate.

In the above method for manufacturing a blower housing, as a preferable aspect, the S2 specifically includes:

s21, basic pressing, namely, placing the raw material plate on a pressing mould, covering the upper mould and the lower mould by using a hydraulic press, wherein the pressing time is 3-7S, and the pressing force is 800-;

s22, deep pressing, namely, performing deep pressing on the plate subjected to the basic pressing in the S21 for 8-12S, and pressing at a pressing force of 1300-1700T;

and S23, completing the pressing, namely, putting the plate subjected to deep pressing in the S22 into a pressing mold for completing the pressing, wherein the pressing time is 3-7S, and the pressing force is 800-.

In the above method for manufacturing a blower housing, as a preferable aspect, the S4 specifically includes:

s41, welding a plurality of positioning corner connectors on the inner sides of the front side plate and the rear side plate respectively;

s42, respectively installing the front side plate and the rear side plate on two sides of the volute casing plate, and supporting the inner side of the volute casing plate by screwing the positioning bolts on the positioning corner connectors so that the edge of the volute casing plate is aligned with the edges of the front side plate and the rear side plate;

and S43, welding the edge joints of the volute plate, the front side plate and the rear side plate in the volute plate, and polishing the welded joints to be smooth.

Compared with the closest prior art, the utility model provides a technical scheme has following beneficial effect:

the utility model discloses a fan casing is through adopting the curb plate of die mould technology preparation fan casing, for conventional fan casing production, the total weight of curb plate reduces by a wide margin when satisfying the intensity requirement, has practiced thrift material cost, has reduced the weight of fan, and the preceding curb plate that adopts the die mould technology preparation and the surface smoothness of posterior lateral plate are better, have prolonged the life of fan casing effectively. The surface through at preceding curb plate and posterior lateral plate sets up sound absorbing material and makes the noise and the vibration of fan further reduce, has optimized the operational environment of fan. The design of adjustable angle between mount pad and the fan casing has expanded the application occasion of fan.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. Wherein:

fig. 1 is a schematic structural view of a blower housing according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a front side plate according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a rear side plate according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a mold according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a lower die according to an embodiment of the present invention;

fig. 6 is a schematic structural view of an annular press core according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a rectangular press core according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a first arc-shaped press core according to an embodiment of the present invention;

FIG. 9 is a schematic view of a second arcuate press core according to an embodiment of the present invention;

fig. 10 is a schematic structural view of a mounting base according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a support leg according to an embodiment of the present invention.

In the figure: 1. a front side plate; 2. a rear side plate; 3. a volute plate; 4. an air inlet; 5. an air outlet; 6. a front annular groove; 7. a front arc-shaped groove; 8. a fan shaft hole; 9. a front rectangular groove; 10. a rear rectangular groove; 11. a rear arc-shaped groove; 12. a mounting seat; 13. a support leg; 14. a support frame; 15. a connecting portion; 16. a fixed part; 17. an upper die; 18. a lower die; 19. an upper die recess; 20. a lower die groove; 21. a countersink; 22. an annular press core; 23. a rectangular press core; 24. a first arc-shaped press core; 25. and the second arc-shaped press core.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and do not require that the present invention must be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense, and may be, for example, either fixed or detachable; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.

According to the specific embodiment of the present invention, as shown in fig. 1 to 11, the present invention provides a fan casing, which includes a volute plate 3, a front side plate 1, a rear side plate 2 and a mounting seat 12.

Specifically, the front side plate 1 and the rear side plate 2 are respectively connected with two sides of the volute plate 3, and the mounting seat 12 is respectively connected with the front side plate 1 and the rear side plate 2 for supporting the fan. Preceding curb plate 1 and posterior lateral plate 2 are integrated into one piece spare, are provided with fan shaft hole 8 and preceding die mould recess on preceding curb plate 1, and a plurality of preceding die mould recess interval distribution are on preceding curb plate 1. An air inlet 4 and a rear compression groove are formed in the rear side plate 2, the circle center of the air inlet 4 is collinear with the center of the fan shaft hole 8, and the rear compression grooves are distributed on the rear side plate 2 at intervals. The front side plate 1, the rear side plate 2 and the outlet of the volute plate 3 enclose to form an air outlet 5 of the fan shell.

Furthermore, the area of the front profiling groove is 0.4-0.6 times of the area of the front side plate 1, and the area of the rear profiling groove is 0.4-0.6 times of the area of the rear side plate 2; preferably, the area of the front profiled groove is 0.5 times the area of the front side plate 1, and the area of the rear profiled groove is 0.5 times the area of the rear side plate 2.

When using, because set up the die mould recess on preceding curb plate 1 and the posterior lateral plate 2, strengthened preceding curb plate 1 and posterior lateral plate 2's intensity greatly, the thickness that makes preceding curb plate 1 and posterior lateral plate 2 when satisfying the intensity needs reduces greatly, and needn't set up the reinforced rib plate again, has both reduced fan casing weight, greatly reduced the welding position, reduced the installation volume, and make the fan casing more pleasing to the eye.

Furthermore, the front profiling groove is recessed in the outer surface of the front side plate 1 and comprises a front annular groove 6 and a front external reinforcing groove, the front annular groove 6 is coaxial with the fan shaft hole 8, and the inner diameter of the front annular groove 6 is larger than that of the fan shaft hole 8; preceding outside reinforcing groove is including preceding rectangle recess 9 and preceding arc recess 7, and rectangle recess 9 distributes along the linear direction interval of air outlet 5 before two at least, and preceding arc recess 7 distributes and keeps away from one side of air outlet 5 on preceding curb plate 1, and distributes along the spiral line direction of fan. The strength of each part of the front side plate 1 and the rear side plate 2 is ensured to be uniform by arranging a plurality of profiling grooves arranged at intervals.

Further, back die mould recess is sunken in the surface of posterior lateral plate 2, and back die mould recess includes back rectangle recess 10 and back arc recess 11, and two at least back rectangle recesses 10 are along the linear direction interval distribution of air outlet 5, and back arc recess 11 distributes and keeps away from one side of air outlet 5 on posterior lateral plate 2, and distributes along the spiral line direction of fan.

The overall strength of the fan shell is the most critical factor influencing the service life, and the key of the product is how to optimize the strength of the fan shell; the fan shell is a static part in the fan system, so that only three factors of the strength, the flatness and the aesthetic feeling of the shell are considered; the utility model discloses an adopt preceding curb plate 1 and posterior lateral plate 2 of whole sheet metal die mould technology production to reduce material weight when satisfying intensity, guaranteed the surface smoothness of preceding curb plate 1 and posterior lateral plate 2, and the fan casing outward appearance of making is more aesthetic feeling.

Further, the mounting seat 12 comprises supporting legs 13 and a supporting frame 14, the supporting frame 14 is arranged on the ground, and the blower casing is connected with the supporting frame 14 through the supporting legs 13; two groups of supporting legs 13 are arranged, one group of supporting legs 13 of the mounting base 12 is welded on the front side plate 1 at a preset included angle, and the other group of supporting legs 13 of the mounting base 12 is correspondingly welded on the rear side plate 2; landing leg 13 and braced frame 14 are connected for dismantling between, and landing leg 13 includes fixed part 16 and connecting portion 15, and fixed part 16 and preceding curb plate 1 or rear side board 2 welding together, and connecting portion 15 cup joints in fixed part 16, and connecting portion 15 can freely stretch out and draw back for fixed part 16, and the fixed part 16 lateral wall is provided with fastening bolt, and fastening bolt passes the lateral wall of fixed part 16 and pushes up tight on the surface of connecting portion 15 to fixed connection portion 15. In this embodiment, the fixing portion 16 and the connecting portion 15 are both square tubes, and one end of the connecting portion 15 is connected to the support frame 14 by a bolt. Through setting up the structure that connecting portion 15 and fixed part 16 cup jointed, can change the length of each landing leg 13 to make the contained angle between air outlet 5 and the horizontal plane adjustable, satisfy different fan installation demands.

The utility model discloses an in other embodiments, can not set up extendible landing leg 13, be provided with the installation station that multiunit and mount pad 12 correspond on preceding curb plate 1 and posterior lateral plate 2, the air-out direction of air outlet 5 is different with the contained angle of horizontal plane when the different installation station is installed to mount pad 12. Specifically, the mounting station comprises a plurality of mounting screw holes, a plurality of mounting holes are correspondingly arranged on the mounting base 12, the connecting bolts pass through the mounting holes and are screwed into the mounting screw holes to realize the mounting of the mounting base 12, and the mounting screw holes on the rest unused mounting stations are also provided with the connecting bolts; preferably, a lock washer is installed between the connection bolt and the front or

rear side plate

1 or 2. When the mounting seat 12 is used, the mounting seat is mounted on a proper mounting station according to requirements, and mounting screw holes on other mounting stations are plugged by connecting bolts to prevent air leakage. Because the fan is big in the operation in-process vibration, set up lock washer and avoided being connected between preceding curb plate 1 or posterior lateral plate 2 and mount pad 12 not hard up. When the air outlet device is used, a proper mounting station is selected according to the angle of the air outlet 5 (between the air outlet 5 and the plane where the mounting seat 12 is located) as required, and the mounting seat 12 is mounted on the mounting station, so that the fan can meet the requirements of different air outlet angles.

Further, sound-absorbing materials (not shown) are laid on the outer surfaces of the front side plate 1 and the rear side plate 2; the vibration and noise generated in the running process of the fan are absorbed, so that the influence of the running of the fan on the environment is smaller; preferably, the sound absorbing material is polyester fiber sound absorbing cotton. The polyester fiber sound-absorbing cotton is low in cost, simple in laying and good in sound-absorbing and vibration-absorbing effects.

Furthermore, a plurality of positioning angle codes (not shown) are arranged on the inner sides of the front side plate 1 and the rear side plate 2 at intervals along the vicinity of the contour line, one side of each positioning angle code is connected with the front side plate 1 or the rear side plate 2 in a clinging manner, the other side of each positioning angle code is perpendicular to the front side plate 1 or the rear side plate 2, a positioning screw hole is formed in the other side of each positioning angle code, a positioning bolt is screwed into the positioning screw hole, and positioning bolt heads on the plurality of positioning angle codes are located on the contour line where the inner surface of the volute plate 3 is located. When the welding machine is used, the contour lines of the volute plate 3 and the front side plate 1 or the rear side plate 2 can be quickly aligned and welded, so that the assembly of the fan shell is greatly facilitated, the manufacturing time is saved, and the manufacturing difficulty of the fan shell is reduced.

The utility model also provides a manufacturing approach of above-mentioned fan casing, this manufacturing approach includes following step:

s1, blanking, namely cutting a Q345B steel plate with a proper size as raw materials of the front side plate 1, the rear side plate 2 and the volute casing plate 3 according to the size of the fan casing, wherein the steel plate is made of a Q345B steel plate, so that the fan casing has the advantages that firstly, the material is easy to obtain in the market; secondly, the strength (tensile strength) of the Q345B steel plate is 350MPa, and the strength can reach 500-600MPa after the steel plate is pressed. The utility model discloses in select for use thickness to be 2-10 mm's Q345B steel sheet, its intensity can satisfy the fan curb plate intensity requirement of the following machine number of 16# after the die mould, the fan is different according to the usage, divide into many series, and every series fan size is different again, the fan of equidimension not corresponds big or small machine number, under general condition, the distance of diagonal blade has been the foundation, say that the distance is 1000mm, then the machine number that corresponds is 10#, 16# is about the distance of diagonal blade for 1600mm promptly. Because the fan with an over-large size has high strength requirement on the side plates, the strength can be solved by the pressure-dependent type, but a larger hydraulic press is needed, at least more than 3000 tons is needed, and the cost performance is too low; the fan front and

rear panels

1, 2 profiling of the present application therefore preferably produces fans below # 16, for example the preparation of fan casings from # 4 to # 16, of the type having a fan casing side dimension of 0.5m by 3.2m by 2.2 m.

S2, performing integral cold pressing and profiling on the raw materials of the front side plate 1 and the rear side plate 2 by using profiling dies, so that front profiling grooves and rear profiling grooves are distributed on the front side plate 1 and the rear side plate 2 respectively; the cold press molding is hydraulic cold press molding, and the steps specifically comprise:

s21, basic pressing, namely, placing the raw material plate on a pressing mold, covering the upper mold 17 and the lower mold 18 by using a hydraulic press, wherein the pressing time is 3-7S, and the pressing force is 800-1200T, preferably 1000T (namely 1000 tons);

s22, deep pressing, namely, performing deep pressing on the plate subjected to the basic pressing in the S21 for 8-12S, wherein the pressing force is 1300-1700T, and preferably 1500T;

s23, completing the pressing, namely placing the plate subjected to deep pressing in the S22 in a pressing mold for completing the pressing, wherein the pressing time is 3-7S, and the pressing force is 800-1200T, preferably 1000T. The pressing grooves meeting the requirements can be processed through three-time pressing, and the flatness of the front side plate 1 and the flatness of the rear side plate 2 can also be guaranteed.

S3, bending the volute plate 3, and bending the cut volute plate 3 raw material to obtain a finished volute plate 3;

s4, connecting the front side plate 1 and the rear side plate 2 which are well pressed with the two sides of the bent volute plate 3 respectively to form a fan shell; the method specifically comprises the following steps:

s41, welding a plurality of positioning corner connectors on the inner sides of the front side plate 1 and the rear side plate 2 respectively;

s42, respectively installing the front side plate 1 and the rear side plate 2 on two sides of the volute plate 3, and supporting the inner side of the volute plate 3 by screwing the positioning bolts on the positioning corner connectors so that the edge of the volute plate 3 is aligned with the edges of the front side plate 1 and the rear side plate 2;

and S43, welding the edge joints of the volute plate 3 and the front side plate 1 and the rear side plate 2 in the volute plate 3, and polishing the welded joints to be flat. The welding adopts 45 degrees angle welding, carries out carbon dioxide protection welding in the contained angle department of two welded plates promptly, and this welding mode welding speed is fast, the melting point is high, welding effect is good. During polishing, firstly, the iron slag falling during welding is removed by a polishing machine, secondly, the irregular welding position which is carelessly welded is coated and filled with iron putty powder, and then the whole body is polished to be smooth.

S5, vibration aging, namely placing the fan shell obtained in the step S4 on a vibration instrument for vibration aging treatment to eliminate internal stress in the fan shell; in this step, the vibration apparatus is a high-frequency vibration apparatus, and the vibration time is 8-13 minutes, preferably 10 minutes, until the stress is mostly dissipated.

Further, as shown in fig. 4 to 9, the profiling mold in S2 is a split mold including an upper mold 17, a lower mold 18 and a profiling core; the upper die 17 covers the lower die 18, the lower surface of the upper die 17 is provided with an upper die groove 19, and the upper surface of the lower die 18 is provided with a lower die groove 20 corresponding to the upper die groove 19; the two ends of the press core are respectively provided with an installation part and a press part, the external dimension of the installation part is matched with the dimensions of the upper die groove 19 and the lower die groove 20, the bottoms of the upper die groove 19 and the lower die groove 20 are provided with press core connecting holes, and the press core is provided with through countersunk holes 21 from the end surface of the press core to the end surface of the installation part; the position of the countersink 21 corresponds to the position of the connecting hole of the die when the die is mounted in the upper die groove 19 or the lower die groove 20; the press core is arranged in the upper mould groove 19 or the lower mould groove 20, the back press part protrudes out of the surface of the upper mould 17 or the lower mould 18, and the press groove on the front side plate 1 or the back side plate 2 is formed before the press core and the corresponding mould groove after the upper mould 17 and the lower mould 18 are covered. Through the design of the detachable press core, the mounting position of the press core (namely, the press core is mounted in the upper mould groove or the lower mould groove) can be selected according to the front side plate 1 and the rear side plate 2 which are pressed according to requirements when the press core is used. In the embodiment of the present invention, the press core is divided into the annular press core 22, the rectangular press core 23 and the arc press core, and since the front arc press groove and the rear arc press groove cannot share one set of press core, two arc press cores are provided, namely, the first arc press core 24 and the second arc press core 25. As seen in fig. 1 and 4 to 9, when the front side plate 1 is molded, the press core (including the annular press core 22, the plurality of rectangular press cores 23 and the second arc-shaped press core 25) may be mounted on the upper mold 17, and when the rear side plate 2 is molded, the press core (including the annular press core 22, the plurality of rectangular press cores 23 and the first arc-shaped press core 24) may be mounted on the lower mold 18, thereby implementing two side plates (the front side plate 1 and the rear side plate 2) of the same set of mold molding fans. When the profiling mold is used, the profiling mold can be designed according to the size of the side plate of the fan shell with similar size, so that the position of the profiling core is positioned at the superposition position of the side plates of the fan shells with multiple models, the same profiling mold is suitable for profiling the side plates of the fan shells with multiple models with similar size, and multiple models share one set of mold. The generalized mold design greatly reduces mold development costs and mold inventory.

Taking the preparation of a 10# fan side plate as an example, the steel plate after 5mm is adopted for welding in the conventional mode, and the reinforcing rib is arranged on the outer surface of the side plate (including the front side plate 1 and the rear side plate 2), the total weight of the front side plate 1 and the rear side plate 2 is about 300kg generally, after the compression molding process of the application is adopted, the thickness of the front side plate 1 and the rear side plate 2 only needs 3mm, and the reinforcing rib is not required to be arranged, the total weight of the manufactured front side plate 1 and the manufactured rear side plate 2 is about 200kg, namely, the total weight of the front side plate 1 and the rear side plate 2 of the fan shell prepared by the compression molding process can be reduced by about one third on the premise of meeting the strength requirement, and the material cost and the processing and manufacturing cost are greatly.

To sum up, the utility model discloses a fan casing is through adopting the curb plate of die mould technology preparation fan casing, for conventional fan casing production, the total weight of curb plate reduces by a wide margin when satisfying the intensity requirement, has practiced thrift material cost, has reduced the weight of fan, and the surface smoothness of the preceding curb plate that adopts the die mould technology preparation and posterior lateral plate is better, has prolonged the life of fan casing effectively. The surface through at preceding curb plate and posterior lateral plate sets up sound absorbing material and makes the noise and the vibration of fan further reduce, has optimized the operational environment of fan. The design of adjustable angle between mount pad and the fan casing has expanded the application occasion of fan. The utility model discloses a split type mould sets up the die core in the mould, can set up the position of die core as required, makes one set of mould can be used for preceding curb plate and the posterior lateral plate of the same fan of die mould, has practiced thrift the quantity of mould greatly, makes the die mould of the fan casing curb plate that same set of die mould was applicable to a plurality of models of approximate size in the die design, one set of mould of multimachine number sharing promptly. The generalized mold design greatly reduces mold development costs and mold inventory.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fan shell is characterized by comprising a volute plate, a front side plate, a rear side plate and a mounting seat;

the front side plate and the rear side plate are respectively connected with two sides of the volute plate, and the mounting seats are respectively connected with the front side plate and the rear side plate and used for supporting a fan;

the front side plate and the rear side plate are both integrally formed parts, a fan shaft hole and front profiling grooves are formed in the front side plate, and the front profiling grooves are distributed on the front side plate at intervals;

the rear side plate is provided with an air inlet and rear profiling grooves, the circle center of the air inlet is collinear with the center of the fan shaft hole, and the rear profiling grooves are distributed on the rear side plate at intervals;

the front side plate, the rear side plate and the outlet of the volute plate enclose to form an air outlet of the fan shell.

2. The blower housing of claim 1, wherein the front profiled groove is recessed in an outer surface of the front side plate, the front profiled groove comprising a front annular groove and a front outer reinforcing groove, the front annular groove being coaxial with the blower shaft hole, the front annular groove having an inner diameter greater than an inner diameter of the blower shaft hole; preceding outside reinforcing groove includes preceding rectangle recess and preceding arc recess, at least two preceding rectangle recess is followed the linear direction interval distribution of air outlet, preceding arc recess distributes keep away from on the preceding curb plate one side of air outlet, and distribute along the spiral line direction of fan.

3. The blower housing according to claim 1, wherein the rear pressed groove is recessed in an outer surface of the rear side plate, the rear pressed groove includes a rear rectangular groove and a rear arc groove, at least two rear rectangular grooves are spaced apart from each other along a straight line of the air outlet, and the rear arc groove is distributed on a side of the rear side plate away from the air outlet and distributed along a spiral line of the blower.

4. The blower enclosure of claim 1, wherein the mounting base includes legs and a support frame, the support frame being disposed on the ground, the blower enclosure being connected to the support frame via the legs;

the supporting legs are arranged in two groups, one group of supporting legs of the mounting seat is welded on the front side plate in a preset included angle, and the other group of supporting legs of the mounting seat is correspondingly welded on the rear side plate;

the landing leg with for dismantling between the carriage and be connected, the landing leg includes fixed part and connecting portion, the fixed part with preceding curb plate or posterior lateral plate welding together, connecting portion cup joint in the fixed part, connecting portion can for the fixed part is flexible freely, the fixed part lateral wall is provided with fastening bolt, fastening bolt passes the lateral wall of fixed part and top tightly are in the surface of connecting portion, thereby it is fixed connecting portion.

5. The blower enclosure of claim 1, wherein sound absorbing material is applied to the outer surfaces of the front and rear side plates.

6. The blower housing of claim 5, wherein the sound absorbing material is polyester fiber sound absorbing cotton.

7. The blower housing according to claim 1, wherein a plurality of positioning angle codes are arranged on inner sides of the front side plate and the rear side plate at intervals along a vicinity of a contour line, one side of each positioning angle code is connected with the front side plate or the rear side plate in a tightly attached manner, the other side of each positioning angle code is perpendicular to the front side plate or the rear side plate, a positioning screw hole is formed in the other side of each positioning angle code, a positioning bolt is screwed into the positioning screw hole, and positioning bolt heads on the plurality of positioning angle codes are located on a contour line where an inner surface of the volute plate is located.