High static pressure centrifugal fan

Abstract

The utility model discloses a high static pressure centrifugal fan which comprises a centrifugal fan body and a base, an installation plate is fixedly installed on the lower surface of the centrifugal fan body, an installation support is fixedly installed on the upper surface of the base, an installation bottom plate is fixedly installed at the upper end of the installation support, and a fixing structure is arranged in the installation bottom plate. The fixing structure comprises a rectangular inserting block, a rectangular clamping groove, a rectangular inserting groove, a rotating block, a bidirectional threaded rod, a rectangular sliding block and a rectangular sliding groove. According to the high-static-pressure centrifugal fan, when the centrifugal fan body needs to be detached, the rotating block is rotated to drive the rectangular clamping block to be separated from the rectangular clamping groove formed in the rectangular insertion block, then the centrifugal fan body is pulled upwards, and the centrifugal fan body can be detached from the rectangular clamping groove. And the rectangular insertion blocks fixedly mounted on the lower surface of the mounting plate close to the two ends are driven to be separated from the rectangular insertion grooves formed in the upper surface of the mounting bottom plate, disassembly is convenient, multiple bolts do not need to be screwed, and simplicity and convenience are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-static-pressure centrifugal fans, and particularly relates to high-static-pressure centrifugal fans. Background Technique

[0002] A static-pressure centrifugal fan is a special centrifugal fan, which is characterized by having a relatively high air pressure. This kind of fan usually operates under the condition that the air pressure is 30 kPa to 200 kPa. The impeller rotating at a high pressure speed accelerates the flow of gas, enabling it to be discharged quickly. The high-static-pressure centrifugal fan plays a role in reducing environmental pollution in agriculture, and at the same time has a powerful high-pressure ventilation and air extraction ability in industry. It is widely used in the transportation of materials and grains. Due to its high air pressure, high efficiency, stable performance, and wide service range, the high-static-pressure centrifugal fan plays an important role in various occasions where ventilation and material transportation are required. The main difference between the high-static-pressure centrifugal fan and the ordinary centrifugal fan lies in its higher pressure output, which means that it can effectively move air or gas under a higher pressure, which is very useful in applications that need to overcome higher resistance or require greater thrust. In the printing industry, mechanical production industry, kilns and boilers and other occasions, the high-static-pressure centrifugal fan is an indispensable equipment; however, the high-static-pressure centrifugal fan currently in use is fixed and installed on the bracket by multiple bolts. When it is necessary to disassemble the high-static-pressure centrifugal fan, it is relatively troublesome and requires turning multiple bolts. Content of the Utility Model

[0003] The main purpose of the utility model is to provide a high-static-pressure centrifugal fan, which can effectively solve the problems in the background technique.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A high-static-pressure centrifugal fan, including a centrifugal fan body and a base. The lower surface of the centrifugal fan body is fixedly installed with a mounting plate, the upper surface of the base is fixedly installed with a mounting bracket, the upper end of the mounting bracket is fixedly installed with a mounting bottom plate, and a fixing structure is arranged inside the mounting bottom plate. The fixing structure includes a rectangular insertion block, a rectangular card slot, a rectangular slot, a rotating block, a bidirectional threaded rod, a rectangular slider, a rectangular sliding groove, a rectangular clamping block, a rectangular groove, a second mounting seat, a movable rod, a bearing, a first mounting seat, a first slider, and a first sliding groove.

[0006] Preferably, rectangular insertion blocks are fixedly installed at both ends of the lower surface of the mounting plate close to the ends. Rectangular card slots are opened on the rectangular insertion blocks, and rectangular slots are opened at both ends of the upper surface of the rotating block close to the ends.

[0007] Preferably, a first sliding groove is opened inside the mounting bottom plate. Bearings are fixedly installed in the middle of the front and rear surfaces of the first sliding groove, and a bidirectional threaded rod is movably installed on the inner surface of the bearing.

[0008] Preferably, a rotating block is fixedly installed on the front surface of the bidirectional threaded rod, and first sliders are threadedly installed on the outer surface of the bidirectional threaded rod near the front and rear ends in the middle, and first mounting seats are fixedly installed on both ends of the first slider.

[0009] Preferably, a movable rod is movably installed on the first mounting seat, rectangular grooves are formed on both ends of the first chute, and rectangular chutes are formed on the front and rear surfaces of the rectangular groove near one end.

[0010] Preferably, a rectangular slider is slidably installed on the inner surface of the rectangular chute, rectangular sliders are fixedly installed on the other ends of the front and rear surfaces of the rectangular clamping block, and second mounting seats are fixedly installed on the middle of the other end of the rectangular clamping block near the front and rear ends, and a movable rod is movably installed on the second mounting seat.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] In the utility model, through the arranged fixing structure, when it is necessary to disassemble the centrifugal fan body, rotate the rotating block to drive the rectangular clamping block to disengage from the rectangular clamping groove formed on the rectangular insertion block, and then pull up the centrifugal fan body to drive the rectangular insertion blocks fixedly installed near both ends of the lower surface of the mounting plate to disengage from the rectangular insertion slots formed on the upper surface of the mounting bottom plate. The disassembly is convenient and does not require screwing multiple bolts, which is relatively simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the overall structural schematic diagram of the high-static-pressure centrifugal fan of the utility model;

[0014] Figure 2 is the partial sectional view of the high-static-pressure centrifugal fan of the utility model;

[0015] Figure 3 is the high-static-pressure centrifugal fan of the utility model Figure 2 enlarged view of part A.

[0016] In the figure: 1, centrifugal fan body; 2, mounting plate; 3, base; 301, mounting bracket; 4, mounting bottom plate; 5, fixing structure; 501, rectangular insertion block; 502, rectangular clamping groove; 503, rectangular insertion slot; 504, rotating block; 505, bidirectional threaded rod; 506, rectangular slider; 507, rectangular chute; 508, rectangular clamping block; 509, rectangular groove; 510, second mounting seat; 511, movable rod; 512, bearing; 513, first mounting seat; 514, first slider; 515, first chute. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] As Figures 1-3 shown, a high-static-pressure centrifugal fan includes a centrifugal fan body 1 and a base 3. An installation plate 2 is fixedly installed on the lower surface of the centrifugal fan body 1, and an installation bracket 301 is fixedly installed on the upper surface of the base 3. The upper end of the installation bracket 301 is fixedly installed with an installation bottom plate 4. A fixing structure 5 is arranged inside the installation bottom plate 4. The fixing structure 5 includes a rectangular insertion block 501, a rectangular card slot 502, a rectangular slot 503, a rotating block 504, a bidirectional threaded rod 505, a rectangular slider 506, a rectangular sliding groove 507, a rectangular clamping block 508, a rectangular groove 509, a second installation seat 510, a movable rod 511, a bearing 512, a first installation seat 513, a first slider 514, and a first sliding groove 515.

[0019] Rectangular insertion blocks 501 are fixedly installed at both ends of the lower surface of the installation plate 2, and rectangular card slots 502 are opened on the rectangular insertion blocks 501. Rectangular slots 503 are opened at both ends of the upper surface of the rotating block 504. A first sliding groove 515 is opened inside the installation bottom plate 4. Bearings 512 are fixedly installed in the middle of the front and rear surfaces of the first sliding groove 515, and a bidirectional threaded rod 505 is movably installed on the inner surfaces of the bearings 512. A rotating block 504 is fixedly installed on the front surface of the bidirectional threaded rod 505. First sliders 514 are threadedly installed near the front and rear ends in the middle of the outer surface of the bidirectional threaded rod 505. First installation seats 513 are fixedly installed on both ends of the surfaces of the first sliders 514. A movable rod 511 is movably installed on the first installation seats 513. Rectangular grooves 509 are opened on both ends of the surfaces of the first sliding groove 515. Rectangular sliding grooves 507 are opened near one end of the front and rear surfaces of the rectangular grooves 509. Rectangular sliders 506 are slidably installed on the inner surfaces of the rectangular sliding grooves 507. Rectangular clamping blocks 508 are fixedly installed with rectangular sliders 506 at the other ends of the front and rear surfaces. Second installation seats 510 are fixedly installed near the front and rear ends in the middle of the other end surfaces of the rectangular clamping blocks 508. A movable rod 511 is movably installed on the second installation seats 510. When it is necessary to disassemble the centrifugal fan body 1, the rotating block 504 can be rotated to drive the rectangular clamping block 508 to disengage from the rectangular card slot 502 opened on the rectangular insertion block 501, and then the centrifugal fan body 1 is pulled upward to drive the rectangular insertion blocks 501 fixedly installed at both ends of the lower surface of the installation plate 2 to disengage from the rectangular slots 503 opened on the upper surface of the installation bottom plate 4. The disassembly is convenient and does not require screwing multiple bolts, which is relatively simple.

[0020] It should be noted that the present utility model is a high-static-pressure centrifugal fan. When it is necessary to disassemble the centrifugal fan body 1, rotate the rotating block 504, so that the rotating block 504 drives the bidirectional threaded rod 505 to rotate on the inner surface of the bearing 512. Thus, the first slider 514 threadedly installed near the front and rear ends in the middle of the outer surface of the bidirectional threaded rod 505 slides in the first chute 515, driving the first mounting seats 513 fixedly installed on both ends of the surface of the first slider 514 to move forward, causing the front end of the movable rod 511 to rotate on the first mounting seat 513, the rear end of the movable rod 511 to rotate on the second mounting seat 510, and driving the second mounting seat 510 to move towards one end, thereby driving the rectangular slider 506 fixedly installed at one end of the front and rear surfaces of the rectangular clamping block 508 to slide on the inner surface of the rectangular chute 507, so that the rectangular clamping block 508 disengages from the rectangular clamping groove 502 opened on the rectangular plug 501. Then, pull the centrifugal fan body 1 upward, driving the rectangular plugs 501 fixedly installed near both ends of the lower surface of the mounting plate 2 to disengage from the rectangular slots 503 opened on the upper surface of the mounting bottom plate 4. The disassembly is convenient and does not require screwing multiple bolts, which is relatively simple.

[0021] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. High static pressure centrifugal fan, characterized by: The invention comprises a centrifugal fan body (1) and a base (3), wherein a mounting plate (2) is fixedly mounted on the lower surface of the centrifugal fan body (1), a mounting bracket (301) is fixedly mounted on the upper surface of the base (3), a mounting base plate (4) is fixedly mounted on the upper end of the mounting bracket (301), a fixing structure (5) is arranged inside the mounting base plate (4), and the fixing structure (5) comprises a rectangular plug block (501), a rectangular slot (502), a rectangular slot (503), a rotating block (504), a bidirectional threaded rod (505), a rectangular slider (506), a rectangular slide groove (507), a rectangular slider (508), a rectangular groove (509), a No. 2 mounting seat (510), a movable rod (511), a bearing (512), a No. 1 mounting seat (513), a No. 1 slider (514), and a No. 1 slide groove (515).

2. The high static pressure centrifugal fan according to claim 1, characterized in that: Rectangular plug blocks (501) are fixedly mounted on the lower surface of the mounting plate (2) near both ends, and rectangular slots (502) are provided on the rectangular plug blocks (501). Rectangular slots (503) are provided on the upper surface of the rotating block (504) near both ends.

3. The high static pressure centrifugal fan according to claim 2, characterized in that: A first slide groove (515) is provided inside the installation base plate (4), a bearing (512) is fixedly installed in the middle of the front and rear surfaces of the first slide groove (515), and a bidirectional threaded rod (505) is movably installed on the inner surface of the bearing (512).

4. The high static pressure centrifugal fan according to claim 3, characterized in that: A rotating block (504) is fixedly mounted on the front surface of the bidirectional threaded rod (505), a No. 1 sliding block (514) is threadedly mounted in the middle of the outer surface of the bidirectional threaded rod (505) near the front and rear ends, and a No. 1 mounting seat (513) is fixedly mounted on both end surfaces of the No. 1 sliding block (514).

5. The high static pressure centrifugal fan according to claim 4, characterized in that: A movable rod (511) is movably mounted on the No. 1 mounting seat (513), and rectangular grooves (509) are provided on both end surfaces of the No. 1 slide groove (515), and rectangular grooves (507) are provided on the front and rear surfaces of the rectangular groove (509) near one end.

6. The high static pressure centrifugal fan according to claim 5, characterized in that: A rectangular slider (506) is slidably mounted on the inner surface of the rectangular slide groove (507); a rectangular slider (506) is fixedly mounted on the other ends of the front and rear surfaces of the rectangular clamping block (508); a second mounting seat (510) is fixedly mounted on the middle part of the other end surface of the rectangular clamping block (508) near the front and rear ends; and a movable rod (511) is movably mounted on the second mounting seat (510).

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