Centrifugal fan top air outlet mounting structure and grain cooling unit thereof

Abstract

The utility model discloses a kind of ejection air mounting structure of centrifugal fan and its grain cooling unit, including hanging platform and bearing platform, the hanging platform has two and is oppositely arranged on the two sides of pipeline flange bottom, each hanging platform is arranged along the installation direction of centrifugal fan;The bearing platform has two and is oppositely arranged on the two sides of air outlet flange, for sliding into corresponding hanging platform and being hung;Compared with prior art, two bearing platforms are slid into two hanging platforms one by one to make air outlet flange and pipeline flange align, at this time, the cooperation of two hanging platforms and two bearing platforms provides support force for centrifugal fan, only one worker is needed, to be fixed using multiple bolts between air outlet flange and pipeline flange respectively and also bolted after arranging damping block between the mounting foot of centrifugal fan and support plate, reduce the labor intensity of centrifugal fan in assembly process, improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of grain cooling unit structure, specifically to a centrifugal fan top outlet installation structure and its grain cooling unit. Background Technology

[0002] Grain cooling units are key equipment for ensuring the green and scientific storage of grains, achieving low-temperature storage by cooling and humidifying the air. Their indoor centrifugal fans can be installed in two ways: top-discharge and side-discharge. To ensure airtightness, existing grain cooling units mostly have welded panels, with only one removable panel reserved for internal maintenance and evaporator installation. This arrangement significantly restricts the space available for centrifugal fan installation, especially for the top-discharge type.

[0003] like Figure 1 In existing grain cooling units, the bottom of the centrifugal fan 1 is connected between the mounting foot 3 and the support plate 4 by a vibration damping block 2. The air outlet of the centrifugal fan 1 and the outlet pipe 6 arranged on the top of the shell 5 of the grain cooling unit are aligned by a flange structure and then fixed with bolts.

[0004] The installation process for this centrifugal fan 1 is as follows:

[0005] First, place the centrifugal fan 1 on the support plate 4;

[0006] Then one worker lifts the centrifugal fan 1 up, and another worker aligns the outlet flange 7 of the centrifugal fan 1 with the pipe flange 8 of the outlet pipe 6 and fixes them with bolts.

[0007] Finally, the vibration damping block 2 is installed between the mounting foot 3 of the centrifugal fan 1 and the support plate 4 and fixed with bolts.

[0008] The connection structure between the centrifugal fan 1 and the outlet pipe 6 mentioned above results in high labor intensity and low work efficiency during the installation of the centrifugal fan 1. Utility Model Content

[0009] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a centrifugal fan top outlet installation structure and its grain cooling unit, so as to solve the problems of high labor intensity and low work efficiency in the installation process of centrifugal fans in the existing technology.

[0010] To achieve the above objectives, the first aspect of this utility model adopts the following technical solution: a centrifugal fan top outlet mounting structure, disposed between the outlet flange of the centrifugal fan and the pipe flange of the outlet pipe, comprising:

[0011] The mounting platform has two mounting platforms arranged facing each other on both sides of the bottom of the pipe flange, and each mounting platform is arranged along the installation direction of the centrifugal fan.

[0012] The support platform has two sides arranged facing each other on both sides of the air outlet flange, and is used to slide into the corresponding hanging platform for hanging.

[0013] The second aspect of this utility model adopts the following technical solution: a grain cooling unit, including a centrifugal fan top outlet mounting structure as described in the first aspect of this utility model.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] In this grain cooling unit, the centrifugal fan top-outlet mounting structure allows for easy assembly of the centrifugal fan. The centrifugal fan is moved to slide the two support platforms into the two mounting brackets, aligning the outlet flange with the pipe flange. The cooperation between the two mounting brackets and the two support platforms provides support for the centrifugal fan. Only one worker is needed to continue connecting the outlet flange to the pipe flange and the bottom of the centrifugal fan, reducing labor intensity and improving work efficiency during assembly. Attached Figure Description

[0016] Figure 1 This is a partial structural diagram of an existing grain cooling unit;

[0017] Figure 2 This is a partial structural schematic diagram of a grain cooling unit according to one embodiment of the present invention;

[0018] Figure 3 for Figure 2 A schematic diagram of a partial structure;

[0019] Figure 4 for Figure 3 Schematic diagram of a centrifugal fan;

[0020] Figure 5 for Figure 3 Schematic diagram of the middle and outlet pipeline;

[0021] Figure 6 This is a schematic diagram of the limiting structure after installation in one embodiment of the present invention;

[0022] Figure 7 for Figure 6 A schematic diagram of the disassembly of the middle limiting structure.

[0023] The reference numerals in the accompanying drawings include:

[0024] Centrifugal fan 1, vibration damping block 2, mounting feet 3, support plate 4, shell 5, outlet pipe 6, air outlet flange 7, pipe flange 8, hanging platform 9, support platform 10;

[0025] Limiting structure 11, elastic element 111, fixing part 112, mounting block 11a, second boss 11b, limiting part 113, abutting block 11c, limiting block 11d, first boss 11e, guide slope 11f;

[0026] Limiting hole 12. Detailed Implementation

[0027] The present invention will be further described in detail below through specific embodiments:

[0028] The existing grain cooling unit's centrifugal fan 1 suffers from high labor intensity and low efficiency during installation due to the connection structure between the centrifugal fan 1 and the outlet pipe 6. To solve this problem, such as... Figures 2-5 As shown in the figure, this utility model embodiment proposes a centrifugal fan top outlet installation structure, which is set between the outlet flange 7 of the centrifugal fan 1 and the pipe flange 8 of the outlet pipe 6. It includes a mounting platform 9 and a support platform 10. There are two mounting platforms 9 arranged facing each other on both sides of the bottom of the pipe flange 8, and each mounting platform 9 is arranged along the installation direction of the centrifugal fan 1. There are two support platforms 10 arranged facing each other on both sides of the outlet flange 7, which are used to slide into the corresponding mounting platform 9 for hanging.

[0029] When the centrifugal fan 1 is being assembled, the centrifugal fan 1 is moved to slide the two support platforms 10 into the two hanging platforms 9 one by one to align the outlet flange 7 with the pipe flange 8. At this time, the cooperation between the two hanging platforms 9 and the two support platforms 10 provides support for the centrifugal fan 1. Only one worker is needed to fix the outlet flange 7 and the pipe flange 8 with multiple bolts, and to fix the vibration damping blocks 2 between the mounting feet 3 and the support plate 4 of the centrifugal fan 1 with bolts. This reduces the labor intensity of the centrifugal fan 1 during the assembly process and improves the work efficiency.

[0030] In this embodiment, both mounting platforms 9 are formed by first folding down one side of the pipe flange 8 and then flipping it towards the central axis of the pipe flange 8, so that each mounting platform 9 has a mounting channel arranged along the installation direction of the centrifugal fan 1. The mounting channel allows the corresponding support platform 10 to slide in and then provides support for the connection of the centrifugal fan 1, so that no additional support is required from the staff for the centrifugal fan 1.

[0031] Both of the aforementioned support platforms 10 are formed by first folding one side of the air outlet flange 7 downwards and then flipping it towards the central axis of the air outlet flange 7, so that the support platform 10 has sufficient structural strength to slide into the corresponding hanging channel and fit, ensuring that the centrifugal fan 1 is hung stably, so that the subsequent connection work of the centrifugal fan 1 can be carried out smoothly and effectively.

[0032] Specifically, the cross-sections of both the hanging platform 9 and the bearing platform 10 are U-shaped.

[0033] When centrifugal fan 1 is being assembled, in order to ensure that the air outlet flange and the pipe flange 8 can be quickly and accurately aligned, so as to facilitate the efficient connection of centrifugal fan 1 later; for example Figures 4-7 As shown, according to another embodiment of the present invention, the centrifugal fan top outlet installation structure includes a limiting structure 11 on each of the bearing platforms 10, and a limiting hole 12 on each hanging platform 9 that cooperates with the limiting structure 11 on the corresponding bearing platform 10.

[0034] When the centrifugal fan 1 is being assembled, the centrifugal fan 1 is moved to slide the two support platforms 10 into the two hanging platforms 9 one by one until the limiting structure 11 mates with the corresponding limiting hole 12. At this time, the outlet flange 7 is aligned with the pipe flange 8, the threaded holes on the outlet flange 7 are aligned with the threaded holes on the pipe flange 8, and the mounting holes on the mounting feet 3 of the centrifugal fan 1 are aligned with the mounting holes on the support plate 4. Vibration damping blocks 2 are installed between the mounting feet 3 and the support plate 4. Bolts are used to fix the two threaded holes and the two mounting holes of each mating pair, and the bolts mating with the mounting holes also pass through the mounting holes on the corresponding vibration damping blocks 2.

[0035] Based on the above solution:

[0036] The limiting structure 11 is fitted with a mounting hole opened on the top of the corresponding support platform 10. The limiting structure 11 includes an elastic element 111, a fixing part 112 and a limiting part 113. The fixing part 112 is connected to one end of the elastic element 111 and is fixedly installed on the corresponding support platform 10. The limiting part 113 is connected to the other end of the elastic element 111 and is movably arranged inside or outside the mounting hole to cooperate with the limiting hole 12.

[0037] Here, the fixing part 112 is a support structure connected to the corresponding support platform 10 as a limiting structure 11, and the elastic element 111 provides the movement and extension of the limiting part 113. When the support platform 10 slides into the corresponding hanging platform 9, the limiting part 113 is placed in the mounting hole when the support platform 10 slides into the hanging channel in the hanging platform 9. The support platform 10 continues to slide into the hanging channel in the hanging platform 9. The limiting part 113 is restricted by the inner wall of the hanging channel and is kept in the mounting hole until the limiting part 113 moves to the limiting hole 12. Under the action of the elastic element 111, the limiting part 113 pops out of the mounting hole and passes through the limiting hole 12 to restrict the support platform 10 from continuing to slide. At this time, the air outlet flange 7 is aligned with the pipe flange 8, and the threaded holes on the air outlet flange 7 are aligned one-to-one with the threaded holes on the pipe flange 8. The mounting holes on the mounting feet 3 of the centrifugal fan 1 are aligned one-to-one with the mounting holes on the support plate 4.

[0038] The fixing part 112 includes a mounting block 11a and a second protrusion 11b. The mounting block 11a is detachably and fixedly connected to the corresponding support platform 10. The second protrusion 11b is fixedly connected to the middle of one side of the mounting block 11a and passes through one end of the elastic member 111, connecting and causing the mounting block 11a to elastically abut against the elastic member 111. In this embodiment, the cross-section of the support platform 10 is U-shaped, providing installation space for the mounting block 11a inside. The mounting hole is opened at the top of the support platform 10, and the mounting block 11a is fixedly connected to the inner bottom wall of the support platform 10 with screws. The second protrusion 11b is square and passes through one end of the elastic member 111. The mounting block 11a abuts against one end of the elastic member 111 to stably connect one end of the elastic member 111 and guide the extension and retraction adjustment of the elastic member 111.

[0039] The limiting part 113 includes an abutment block 11c and a limiting block 11d. A first protrusion 11e is formed in the middle of one side of the abutment block 11c. The first protrusion 11e is inserted into one end of the elastic member 111 and connected. The abutment block 11c and the elastic member 111 elastically abut against each other and the abutment block 11c abuts against the outside of one end of the mounting hole. The limiting block 11d is fixedly connected to the middle of the other side of the abutment block 11c and freely passes through the mounting hole and is placed outside the top of the corresponding support platform 10. A guide slope 11f is formed on the limiting block 11d to slide with the corresponding hanging platform 9 so that the limiting block 11d is guided into the limiting hole 12 during assembly.

[0040] In this embodiment, the first protrusion 11e is also square and penetrates into the other end of the elastic member 111. The rear abutment block 11c abuts against the elastic end to stably connect the other end of the elastic member 111 and guide the extension and retraction adjustment of the elastic member 111. At the same time, the abutment block 11c abuts against the outside of the mounting hole to ensure that the elastic member 111 is stably assembled between the abutment block 11c and the mounting block 11a. The size of the end of the limiting block 11d connected to the abutment block 11c is adapted to the size of the mounting hole so that the limiting block 11d can move stably in or out of the mounting hole.

[0041] When the support platform 10 slides into the corresponding hanging platform 9, it is at the initial stage of the support platform 10 sliding into the hanging channel within the hanging platform 9.

[0042] The guide ramp 11f slides against the inner wall of the hanging channel, and the support platform 10 continues to slide into the hanging channel, driving the limiting block 11d to move into the mounting hole and restricting the limiting block 11d within the mounting hole, while the elastic element 111 retracts; the support platform 10 continues to slide into the hanging channel until the limiting block 11d moves to the limiting hole 12, where the elastic element 111 causes the limiting block 11d to pop out of the mounting hole and pass through the limiting hole 12, thus restricting the support platform 10 from continuing to slide; at this time, the air outlet flange 7 is aligned with the pipe flange 8, the threaded holes on the air outlet flange 7 are aligned one-to-one with the threaded holes on the pipe flange 8, and the mounting holes on the mounting feet 3 of the centrifugal fan 1 are aligned one-to-one with the mounting holes on the support plate 4.

[0043] The elastic element 111 can be a spring, which is arranged between the abutment block 11c and the mounting block 11a, and cooperates with the first boss 11e and the second boss 11b.

[0044] The above-mentioned centrifugal fan top-outlet installation structure is applied to grain cooling units.

[0045] like Figure 2 and Figure 3 As shown, according to another embodiment of the present invention, a grain cooling unit includes a casing, an outlet pipe 6 disposed on the top of the casing, and a centrifugal fan 1 disposed inside the casing. A pipe flange 8 is formed on the outlet pipe 6, and an outlet flange 7 is formed at the outlet of the centrifugal fan 1. It also includes a centrifugal fan top outlet mounting structure disposed between the outlet flange 7 and the pipe flange 8 as in any of the above embodiments.

[0046] The centrifugal fan 1 is assembled as follows:

[0047] The centrifugal fan 1 is moved to slide the two support platforms 10 into the two hanging platforms 9 one by one. Initially, the guide slope 11f slides against the inner wall of the hanging channel. As the support platform 10 continues to slide into the hanging channel, the driving limit block 11d moves into the mounting hole and restricts the limit block 11d in the mounting hole, and the elastic element 111 contracts.

[0048] Continue sliding the support platform 10 into the mounting channel until the limiting block 11d moves to the limiting hole 12. Under the action of the elastic element 111, the limiting block 11d pops out of the mounting hole and passes through the limiting hole 12 to limit the support platform 10 from sliding further. At this time, the air outlet flange 7 is aligned with the pipe flange 8, and the threaded holes on the air outlet flange 7 are aligned with the threaded holes on the pipe flange 8. The mounting holes on the mounting feet 3 of the centrifugal fan 1 are aligned with the mounting holes on the support plate 4.

[0049] Next, damping blocks 2 are installed between the mounting feet 3 and the support plate 4. Bolts are used to fix the two threaded holes and the two mounting holes of each mating part. The bolts that mate with the mounting holes also pass through the mounting holes on the corresponding damping blocks 2 to complete the assembly of the centrifugal fan 1.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A centrifugal fan top outlet mounting structure, disposed between the outlet flange of the centrifugal fan and the pipe flange of the outlet pipe, characterized in that, include: The mounting platform has two mounting platforms arranged facing each other on both sides of the bottom of the pipe flange, and each mounting platform is arranged along the installation direction of the centrifugal fan. The support platform has two sides arranged facing each other on both sides of the air outlet flange, and is used to slide into the corresponding hanging platform for hanging.

2. The centrifugal fan top outlet mounting structure according to claim 1, characterized in that, Each of the aforementioned support platforms is provided with a limiting structure, and each hanging platform is provided with a limiting hole that cooperates with the limiting structure on the corresponding support platform.

3. A centrifugal fan top outlet mounting structure according to claim 1 or 2, characterized in that, Both of the aforementioned mounting platforms are formed by first folding one side of the pipe flange downwards and then flipping it towards the central axis of the pipe flange.

4. A centrifugal fan top outlet mounting structure according to claim 1 or 2, characterized in that, Both of the aforementioned support platforms are formed by first folding one side of the air outlet flange downwards and then flipping it towards the central axis of the air outlet flange.

5. The centrifugal fan top outlet mounting structure according to claim 2, characterized in that, The limiting structure is equipped with a mounting hole opened on the top of the corresponding support platform, and the limiting structure includes: Elastic components; A fixing part is connected to one end of the elastic element and is fixedly mounted on the corresponding support platform; The limiting part is connected to the other end of the elastic element and is movably arranged inside or outside the mounting hole to cooperate with the limiting hole.

6. The centrifugal fan top outlet installation structure according to claim 5, characterized in that, The limiting part includes: A contact block, wherein a first protrusion is formed in the middle of one side of the contact block, the first protrusion is inserted into one end of the elastic member and connected, the contact block and the elastic member elastically abut against each other and the contact block abuts against the outside of one end of the mounting hole; A limiting block is fixedly connected to the middle of the other side of the abutment block and freely passes through the mounting hole and is placed outside the top of the corresponding support platform. A guide slope is formed on the limiting block to slide with the corresponding hanging platform so that the limiting block is guided into the limiting hole during assembly.

7. The centrifugal fan top outlet mounting structure according to claim 6, characterized in that, The size of the end of the limiting block connected to the abutment block is adapted to the size of the mounting hole.

8. The centrifugal fan top outlet mounting structure according to claim 5, characterized in that, The fixing part includes: Mounting block, which is detachably and fixedly connected to the corresponding support platform; The second boss is fixedly connected to the middle of one side of the mounting block. The second boss is inserted into one end of the elastic element and connected to it, so that the mounting block and the elastic element elastically abut against each other.

9. A grain cooling unit, characterized in that, Includes a centrifugal fan top outlet mounting structure as described in any one of claims 1-8.

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