Centrifugal fan volute structure

Abstract

The utility model discloses a centrifugal fan volute structure, which belongs to the technical field of centrifugal fan volutes and comprises a first volute and a second volute, the second volute is arranged on one side of the first volute, and mounting mechanisms for quickly dismounting and mounting the first volute and the second volute are arranged in the first volute and the second volute. A fixing assembly is arranged outside the first volute and the second volute, the mounting mechanism is arranged, the first volute and the second volute can be quickly mounted together through the mounting mechanism in the using process, and when equipment in the first volute and the second volute needs to be overhauled, the first volute and the second volute can be fixed through the fixing assembly. And the first volute and the second volute can also be quickly disassembled through the mounting mechanism, the equipment overhauling efficiency is improved, the equipment can be mounted at a proper position through the fixing assembly during use by arranging the fixing assembly, and meanwhile, the stability between the first volute and the second volute can also be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal fan volutes, in particular to a centrifugal fan volute structure. Background Art

[0002] The volute of a centrifugal fan, also known as the casing, is shaped like a snail, hence the name. The main function of the centrifugal fan volute is to collect and guide the medium gas delivered from the centrifugal fan impeller so that the gas converges to the air outlet of the centrifugal fan volute.

[0003] In order to facilitate assembly and maintenance, the centrifugal volute is generally installed by bolt fasteners. However, when the various components are installed by bolts, it is often necessary to constantly adjust the position to align the bolt holes, and the bolt fastening process needs to be repeated many times, which is time-consuming and labor-intensive, reducing the speed of assembly installation. It is not convenient and troublesome in the early installation or later maintenance and dismantling.

[0004] The existing patent (publication number: CN218971492U) centrifugal fan volute structure, when the centrifugal fan needs to be inspected and maintained, the staff will push the outer end of the movable clamping plate downward in turn, then the inner end of the movable clamping plate will be tilted and separated from the corresponding rectangular plate, after separation, the rectangular plate and the sliding rod will move to the left under the action of the spring rebound force, and the movable clamping plate will be reset under the action of the spring rebound force, when the staff will push all the movable clamping plates downward once, the relevant staff can separate the volute one and the volute two, and then carry out inspection and maintenance work, which ensures the overall stability of the structure while facilitating the staff to assemble and dismantle.

[0005] In view of the above problems, the existing patent provides a solution, but when in use, it only limits the movable clamping plate by the elastic force of the spring. When the centrifugal fan is running, it will generate vibration, and the vibration of the equipment will cause the spring to swing back and forth. Over time, the rectangular plate will be separated from the movable clamping plate, and eventually the equipment will fall apart.

[0006] To this end, a centrifugal fan volute structure is proposed. Utility Model Content

[0007] The purpose of the utility model is to provide a centrifugal fan volute structure, which can solve the problem that the existing centrifugal fan volute structure only limits the movable clamping plate by the elastic force of the spring when in use, and when the centrifugal fan is in operation, it will generate vibration, and when the equipment vibrates, it will cause the spring to swing back and forth. In the long run, the rectangular plate will be separated from the movable clamping plate, and the equipment will eventually fall apart.

[0008] To achieve the above object, the utility model provides the following technical solution: a centrifugal fan volute structure, comprising a first volute and a second volute, wherein the second volute is arranged on one side of the first volute, and the first volute and the second volute are provided with a mounting mechanism for quickly disassembling and assembling the first volute and the second volute inside, and a fixing assembly is provided outside the first volute and the second volute;

[0009] The mounting mechanism includes a plug plate, a slot, a slide groove, a plug rod, a lifting plate and a positioning block. The plug plate is welded to the side wall of the second volute, the slot is opened in the interior of the first volute, the slide groove is opened at the top of the slot, the plug rod is slidably connected to the interior of the slide groove, the lifting plate is welded to the side wall of the plug rod, the positioning block is movably connected to the top of the lifting plate, and the bottom of the plug rod extends to the interior of the plug plate and is movably connected to the plug plate.

[0010] Preferably, the fixing assembly includes a mounting plate, a support frame and a fixing plate, the mounting plate is bolted to the bottom of the first volute and the second volute, the support frame is welded to the bottom of the mounting plate, and the fixing plate is welded to the bottom of the support frame.

[0011] Preferably, a limiting plate is welded to the top of the insertion rod, a spring is welded to the top of the limiting plate, and the top of the spring is welded to the top of the slide groove.

[0012] Preferably, a sealing ring is welded on the outer wall of the second volute, the bottom of one end of the sealing ring is tightly fitted with the outer wall of the first volute, and the sealing ring is made of rubber material.

[0013] Preferably, a connecting portion is provided on the outside of the first volute, and a bolt is threadedly connected to the inside of the connecting portion, and one end of the bolt extends to the inside of the first volute and is threadedly connected to the first volute.

[0014] Preferably, a protrusion is welded on the side wall of the positioning block to facilitate the movement of the positioning block, and the protrusion is made of stainless steel.

[0015] Preferably, an anti-rust layer is sprayed on the outer walls of the first volute and the second volute, and the anti-rust layer is made of red single anti-rust paint.

[0016] Preferably, a guide rod is welded on the side wall of the first volute, and one end of the guide rod extends to the interior of the second volute and is plugged into the second volute.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The present application is provided with an installation mechanism, through which the first volute and the second volute can be quickly installed together when in use; when it is necessary to inspect and repair the equipment inside the first volute and the second volute, the first volute and the second volute can also be quickly disassembled through the installation mechanism, thereby improving the efficiency of inspecting and repairing the equipment.

[0019] 2. The present application is provided with a fixing component, which can be used to install the device in a suitable position when in use, and can also improve the stability between the first volute and the second volute. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is the overall structural view of the utility model;

[0022] Figure 2 It is a front view of the utility model;

[0023] Figure 3 For this utility model Figure 2 The three-dimensional cross-section view at AA in the middle;

[0024] Figure 4 For this utility model Figure 3 The enlarged view of point A in the middle;

[0025] Figure 5 For this utility model Figure 3 Enlarged view of point B in the middle.

[0026] Description of reference numerals:

[0027] 1. First volute; 2. Second volute; 3. Mounting mechanism; 4. Fixing assembly; 5. Limiting plate; 6. Spring; 7. Sealing ring; 8. Connecting part; 9. Bolt; 10. Bump; 11. Guide rod; 301. Insert plate; 302. Slot; 303. Slide groove; 304. Insert rod; 305. Lifting plate; 306. Positioning block; 401. Mounting plate; 402. Support frame; 403. Fixing plate. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figures 1 to 5 , the utility model provides a technical solution:

[0030] A centrifugal fan volute structure comprises a first volute 1 and a second volute 2, wherein the second volute 2 is arranged on one side of the first volute 1, an installation mechanism 3 for quickly disassembling and assembling the first volute 1 and the second volute 2 is arranged inside the first volute 1 and the second volute 2, and a fixing component 4 is arranged outside the first volute 1 and the second volute 2;

[0031] The mounting mechanism 3 includes an insert plate 301, a slot 302, a slide groove 303, an insert rod 304, a lifting plate 305 and a positioning block 306. The insert plate 301 is welded to the side wall of the second volute 2, the slot 302 is opened inside the first volute 1, the slide groove 303 is opened at the top of the slot 302, the insert rod 304 is slidably connected to the inside of the slide groove 303, the lifting plate 305 is welded to the side wall of the insert rod 304, the positioning block 306 is movably connected to the top of the lifting plate 305, and the bottom of the insert rod 304 extends to the inside of the insert plate 301 and is movably connected to the insert plate 301.

[0032] Specifically, Figure 4 As shown, a limiting plate 5 is welded to the top of the insert rod 304 , a spring 6 is welded to the top of the limiting plate 5 , and the top of the spring 6 is welded to the top of the slide groove 303 .

[0033] Specifically, Figure 1 As shown, a sealing ring 7 is welded on the outer wall of the second volute 2, and the bottom of one end of the sealing ring 7 is tightly fitted with the outer wall of the first volute 1, and the sealing ring 7 is made of rubber material.

[0034] Specifically, Figure 1 As shown, a connecting portion 8 is provided on the outside of the first volute 1 , and a bolt 9 is threadedly connected to the inside of the connecting portion 8 . One end of the bolt 9 extends to the inside of the first volute 1 and is threadedly connected to the first volute 1 .

[0035] Specifically, Figure 4 As shown, a protrusion 10 is welded on the side wall of the positioning block 306 to facilitate the movement of the positioning block 306, and the protrusion 10 is made of stainless steel.

[0036] Specifically, Figure 1As shown, the outer walls of the first volute 1 and the second volute 2 are sprayed with an anti-rust layer, which is made of red single anti-rust paint.

[0037] Specifically, Figure 5 As shown, a guide rod 11 is welded on the side wall of the first volute 1 , and one end of the guide rod 11 extends to the inside of the second volute 2 and is plugged into the second volute 2 .

[0038] When in use, the second volute 2 is placed on one side of the first volute 1, and then the second volute 2 is moved to one side so that the guide rod 11 enters the interior of the second volute 2, thereby achieving the first step of position fixing, and then the movement continues so that the plug plate 301 enters the interior of the slot 302, and then the movement continues, and then one end of the plug plate 301 contacts one end of the plug rod 304, because the plug plate 301 and one end of the plug rod 304 are both inclined, so when the plug plate 301 contacts the slot 302, it will cause the plug rod 304 to move upward, and then the spring 6 contracts When the plug plate 301 contacts the inner wall of the slot 302, the plug rod 304 will be inserted into the inside of the plug plate 301 due to the elastic force of the spring 6. At this time, the plug plate 301 and the second volute 2 will be fixed for the first time, and then the user can place the positioning block 306 on the top of the lifting plate 305 to fix the positions of the lifting plate 305 and the plug rod 304, thereby also fixing the position of the plug plate 301 for the second time. Through the above two fixations, the vibration generated during the operation of the device can be prevented from causing the device to fall apart, thereby improving the overall stability of the device.

[0039] Specifically, Figure 3 As shown, the fixing assembly 4 includes a mounting plate 401, a support frame 402 and a fixing plate 403, the mounting plate 401 is bolted to the bottom of the first volute 1 and the second volute 2, the support frame 402 is welded to the bottom of the mounting plate 401, and the fixing plate 403 is welded to the bottom of the support frame 402.

[0040] After the first volute 1 and the second volute 2 are installed, the mounting plate 401 can be installed on the side walls of the first volute 1 and the second volute 2, thereby achieving a third fixation, which can further improve the overall stability of the device.

[0041] By adopting the above technical solution, the problem that the existing centrifugal fan volute structure only limits the movable clamping plate by the elastic force of the spring when in use is solved, and vibration is generated when the centrifugal fan is in operation. The vibration of the equipment will cause the spring to swing back and forth, which will cause the rectangular plate to separate from the movable clamping plate in the long run, and eventually the equipment will fall apart is solved.

[0042] Working principle: when in use, place the second volute 2 on one side of the first volute 1, then move the second volute 2 to one side so that the guide rod 11 enters the interior of the second volute 2, thereby achieving the first step of fixing the position, then continue to move so that the plug plate 301 enters the interior of the slot 302, and then continue to move, then one end of the plug plate 301 contacts one end of the plug rod 304, because one end of the plug plate 301 and the plug rod 304 are both inclined, so when the plug plate 301 contacts the slot 302, it will cause the plug rod 304 to move upward, and then the spring 6 contracts, and when the plug plate 301 contacts the inner wall of the slot 302, the plug rod 304 is elastic due to the elastic force of the spring 6 The function is to insert the plug plate 301 into the interior of the plug plate 301. At this time, the plug plate 301 and the second volute 2 will be fixed for the first time. Then the user can place the positioning block 306 on the top of the lifting plate 305 to fix the positions of the lifting plate 305 and the plug rod 304, thereby fixing the position of the plug plate 301 for the second time. Through the above two fixations in total, the vibration generated during the operation of the equipment can be prevented from causing the equipment to fall apart, thereby improving the overall stability of the device. After the first volute 1 and the second volute 2 are installed, the mounting plate 401 can be installed on the side walls of the first volute 1 and the second volute 2, thereby achieving the third fixation, which can further improve the overall stability of the device.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A centrifugal fan volute structure, comprising a first volute (1) and a second volute (2), characterized in that: The second volute (2) is arranged on one side of the first volute (1); a mounting mechanism (3) for quickly disassembling and assembling the first volute (1) and the second volute (2) is arranged inside the first volute (1) and the second volute (2); and a fixing component (4) is arranged outside the first volute (1) and the second volute (2); The mounting mechanism (3) comprises a plug plate (301), a slot (302), a slide groove (303), a plug rod (304), a lifting plate (305) and a positioning block (306); the plug plate (301) is welded to the side wall of the second volute (2); the slot (302) is opened inside the first volute (1); the slide groove (303) is opened at the top of the slot (302); the plug rod (304) is slidably connected to the inside of the slide groove (303); the lifting plate (305) is welded to the side wall of the plug rod (304); the positioning block (306) is movably connected to the top of the lifting plate (305); the bottom of the plug rod (304) extends to the inside of the plug plate (301) and is movably connected to the plug plate (301).

2. The centrifugal fan volute structure according to claim 1, characterized in that: The fixing assembly (4) comprises a mounting plate (401), a support frame (402) and a fixing plate (403); the mounting plate (401) is bolted to the bottom of the first volute (1) and the second volute (2); the support frame (402) is welded to the bottom of the mounting plate (401); and the fixing plate (403) is welded to the bottom of the support frame (402).

3. The centrifugal fan volute structure according to claim 1, characterized in that: A limiting plate (5) is welded to the top of the insertion rod (304), a spring (6) is welded to the top of the limiting plate (5), and the top of the spring (6) is welded to the top of the slide groove (303).

4. The centrifugal fan volute structure according to claim 1, characterized in that: A sealing ring (7) is welded to the outer wall of the second volute (2), and the bottom of one end of the sealing ring (7) is tightly fitted with the outer wall of the first volute (1), and the sealing ring (7) is made of rubber material.

5. The centrifugal fan volute structure according to claim 1, characterized in that: A connecting portion (8) is provided on the outside of the first volute (1), a bolt (9) is threadedly connected to the inside of the connecting portion (8), and one end of the bolt (9) extends into the inside of the first volute (1) and is threadedly connected to the first volute (1).

6. The centrifugal fan volute structure according to claim 1, characterized in that: A protrusion (10) is welded on the side wall of the positioning block (306) to facilitate the movement of the positioning block (306), and the protrusion (10) is made of stainless steel.

7. The centrifugal fan volute structure according to claim 1, characterized in that: The outer walls of the first volute (1) and the second volute (2) are both sprayed with an anti-rust layer, and the anti-rust layer is made of red single anti-rust paint.

8. The centrifugal fan volute structure according to claim 1, characterized in that: A guide rod (11) is welded to the side wall of the first volute (1), and one end of the guide rod (11) extends into the interior of the second volute (2) and is plugged into the second volute (2).

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