A volute-free fan convenient for maintenance

Abstract

The utility model discloses a volute -less fan convenient to overhaul relates to ventilation equipment technical field. The utility model discloses a machine case and the overhaul door, and the hydraulic cylinder is installed to the machine case back part, and the guide rail is connected under the inside of machine case, and the first sliding frame is connected in the guide rail inside, and the first sliding frame back part is connected with the hydraulic cylinder output end, and the self -lock subassembly is connected in the first sliding frame inside, and the self -lock subassembly includes the second sliding frame and the sliding block, and the sliding block top is connected with the sealing plate, and the spring is connected in the second sliding frame inside, and the spring top is connected with the pressing frame through bolt, and the fixed pin is connected to the pressing frame top. The utility model is provided with hydraulic cylinder, guide rail and first sliding frame, and the first sliding frame is driven along the guide rail sliding with hydraulic cylinder, can remove motor and whole impeller from the machine case, solves the problem that the original machine case inside space is narrow, provides sufficient operating space for the separation of impeller and sealing plate and fan dismounting of self -lock subassembly, and is convenient to overhaul operation.

Description

Technical Field

[0001] This utility model relates to the field of ventilation equipment technology, specifically to a volute-less fan that is easy to maintain. Background Technology

[0002] Due to their compact structure, small size, and suitability for low static pressure scenarios, volute-less fans are widely used in air conditioning terminals, cabinet cooling, and other fields. Volute-less fans are usually installed in the chassis.

[0003] Although existing volute-less fans have access doors on the outside of the casing for easy maintenance, the limited space inside the casing restricts the operating space for maintenance personnel, and the dim lighting inside makes operation difficult and affects maintenance. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a volute-less fan that is easy to maintain, so as to solve the technical problems in the background art mentioned above.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a volute-less fan that is easy to maintain, comprising a casing and an inspection door. A hydraulic cylinder is installed on the back of the casing. A guide rail is connected to the lower part of the casing. A first slide is connected inside the guide rail, and the back of the first slide is connected to the output end of the hydraulic cylinder. A self-locking assembly is connected inside the first slide. The self-locking assembly includes a second slide and a slider. A sealing plate is bolted to the top of the slider. A spring is connected inside the second slide. A pressing frame is connected to the top of the spring. A fixing pin is connected to the top of the pressing frame. A motor is connected to one side of the top of the second slide via a mounting bracket. An impeller is connected to the output end of the motor.

[0006] Furthermore, the top of the first carriage is provided with a fixing hole, and the fixing pin corresponds to the fixing hole.

[0007] By adopting the above technical solution, the fixing pin and the fixing hole are fitted with an H7 / g6 clearance, the conical angle is 5°-8°, and the surface of the fixing pin is nickel-plated. The fixing pin and the fixing hole are fitted together to achieve quick fixing and separation. When maintenance is required, the staff can press the pressing frame to make the fixing pin disengage from the fixing hole, which provides convenience for the disassembly and maintenance of the fan.

[0008] Furthermore, the first carriage is provided with a sliding groove, and the second carriage and the slider are slidably connected to the first carriage through the sliding groove, and the pressing frame slides along the inside of the second carriage.

[0009] By adopting the above technical solution, the slide groove provides a sliding path for the second slide, the pressing frame and the slider, and the inside of the slide groove is coated with graphite grease, so that the second slide (and the motor and impeller above it) can slide smoothly along the slide groove, realizing the quick separation of the impeller from the sealing plate, which facilitates the inspection and maintenance of the impeller.

[0010] Furthermore, the second carriage, the pressing bracket, and the slider are all detachably connected to the first carriage.

[0011] By adopting the above technical solution, the detachable connection design, combined with the quick separation function of the self-locking component, allows the second slide, pressing frame and other components to be quickly separated from the first slide during maintenance, thereby allowing the entire fan to be removed from the casing and meeting the needs of further in-depth maintenance.

[0012] Furthermore, the pressing frame is detachably connected to the second slide.

[0013] By adopting the above technical solution, it is easy to disassemble and assemble the self-locking structure composed of the pressing frame, spring and fixing pin, ensuring the stability of the quick fixing and separation function of the self-locking component, and ensuring smooth disassembly of components such as impeller during maintenance.

[0014] Furthermore, the spring is provided in four groups, and the four groups of springs are distributed in a rectangular array.

[0015] By adopting the above technical solution, the spring uses four sets of cylindrical helical springs with a diameter of 5-8mm, a free length of 30-50mm, and a compression stroke of 10-15mm. The four sets of springs distributed in a rectangular array can provide elastic force evenly, ensuring the force balance of the pressing frame and making the fit between the fixing pin and the fixing hole more stable. This not only ensures the quick fixing effect during installation, but also allows for easy separation by pressing during maintenance, improving the convenience of operation.

[0016] Furthermore, the first carriage is slidably connected to the chassis via a guide rail.

[0017] By adopting the above technical solution, the guide rail provides sliding support for the first carriage. With the help of the hydraulic cylinder, the first carriage and the fan structure above it can be moved out of the casing as a whole, which is convenient for staff to maintain and provides sufficient operating space for fan disassembly.

[0018] Furthermore, the inner wall of the chassis is provided with a placement groove, and rollers are placed inside the placement groove.

[0019] By adopting the above technical solution, the rollers reduce the friction between the first carriage and the chassis, making the first carriage move out more smoothly. This ensures that when the fan needs to be disassembled for maintenance, the fan structure can be quickly moved out of the chassis. Combined with the separation function of the self-locking component, the overall maintenance efficiency is improved.

[0020] Furthermore, the slider is provided in three groups, and the three groups of sliders are distributed at equal intervals.

[0021] By adopting the above technical solution, the three sets of equally spaced sliders enhance the connection stability between the second slide and the first slide, ensuring that the second slide (and the fan) slides more smoothly when separated or fixed by the self-locking component, avoiding shaking that could affect the disassembly or installation operation.

[0022] Furthermore, the rollers abut against the chassis and the first carriage, respectively.

[0023] By adopting the above technical solution, the rollers convert sliding friction into rolling friction, reducing the resistance to the removal of the first carriage, making the removal of the fan structure easier and facilitating the quick removal of the fan for maintenance, and allowing for the inspection and maintenance of the impeller and motor.

[0024] In summary, the present invention has the following main advantages:

[0025] 1. This utility model is equipped with a hydraulic cylinder, a guide rail and a first slide. The hydraulic cylinder drives the first slide to slide along the guide rail, which can move the motor and impeller out of the casing as a whole. This solves the problem of the small internal space of the original casing and provides sufficient operating space for the self-locking component to separate the impeller from the sealing plate and disassemble the fan, which is convenient for maintenance operations.

[0026] 2. This utility model is equipped with a fixing pin, a spring and a pressing bracket. The fixing pin and the fixing hole cooperate to achieve quick fixing and separation. During maintenance, pressing the pressing bracket can make the fixing pin disengage from the fixing hole, quickly separating the impeller from the sealing plate, so that the components on the second slide and the slider are separated from the first slide, and the fan can be easily disassembled as a whole to meet the needs of further in-depth maintenance and greatly improve the convenience of maintenance. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the back structure of this utility model;

[0029] Figure 3 This is a schematic diagram of the first carriage structure of this utility model;

[0030] Figure 4 This is a schematic diagram of the sealing plate structure of this utility model;

[0031] Figure 5 This is a schematic diagram of the slider structure of this utility model;

[0032] Figure 6 This is a schematic diagram of the pressing frame structure of this utility model.

[0033] In the diagram: 1. Chassis; 2. Hydraulic cylinder; 3. Inspection door; 4. Guide rail; 5. First slide; 6. Self-locking assembly; 601. Second slide; 602. Spring; 603. Pressing bracket; 604. Fixing pin; 605. Slider; 606. Sealing plate; 7. Slide groove; 8. Fixing hole; 9. Mounting bracket; 10. Motor; 11. Impeller; 12. Placement groove; 13. Roller. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0035] The embodiments of this utility model will be described below based on its overall structure.

[0036] Example 1: A volute-less fan that is easy to maintain, such as... Figures 1-6 As shown, the system includes a chassis 1 and an inspection door 3. A hydraulic cylinder 2 is mounted on the back of the chassis 1. A guide rail 4 is connected to the lower part of the chassis 1. A first slide 5 is connected inside the guide rail 4, and the back of the first slide 5 is connected to the output end of the hydraulic cylinder 2. A self-locking assembly 6 is connected inside the first slide 5. The self-locking assembly 6 includes a second slide 601 and a slider 605. A sealing plate 606 is bolted to the top of the slider 605. A spring 602 is connected inside the second slide 601. A pressing frame 603 is connected to the top of the spring 602, and a fixing pin 604 is connected to the top of the pressing frame 603. The second slide 601 has a motor 10 connected to one side of its top via a mounting bracket 9. The output end of the motor 10 is connected to an impeller 11. The top of the first slide 5 has a fixing hole 8, and a fixing pin 604 corresponds to the fixing hole 8. The fixing pin 604 and the fixing hole 8 are fitted with an H7 / g6 clearance, with a cone angle of 5°-8°. The surface of the fixing pin 604 is nickel-plated. The fixing pin 604 and the fixing hole 8 cooperate to achieve quick fixing and separation. When maintenance is required, the staff can press the pressing bracket 603 to disengage the fixing pin 604 from the fixing hole 8, which facilitates the disassembly and maintenance of the fan.

[0037] See Figure 2 , Figure 3 , Figure 4 and Figure 5In the above embodiment, the first slide 5 is provided with a slide groove 7. The second slide 601 and the slider 605 are slidably connected to the first slide 5 through the slide groove 7. The pressing frame 603 slides along the inside of the second slide 601. The slide groove 7 provides a sliding path for the second slide 601, the pressing frame 603 and the slider 605. The inside of the slide groove 7 is coated with graphite grease so that the second slide 601 (and the motor 10 and impeller 11 above it) can slide smoothly along the slide groove 7, so as to realize the quick separation of the impeller 11 from the sealing plate 606 and facilitate the inspection and maintenance of the impeller 11.

[0038] See Figure 3 , Figure 4 , Figure 5 and Figure 6 In the above embodiments, the second slide 601, the pressing frame 603 and the slider 605 are all detachably connected to the first slide 5. The detachable connection design, together with the quick separation function of the self-locking component 6, allows the second slide 601, the pressing frame 603 and other components to be quickly separated from the first slide 5 during maintenance, thereby allowing the entire fan to be removed from the casing 1 to meet the needs of further in-depth maintenance.

[0039] See Figure 6 In the above embodiment, the pressing frame 603 and the second slide 601 are detachably connected, which facilitates the individual disassembly and assembly of the self-locking structure composed of the pressing frame 603, the spring 602 and the fixing pin 604, ensuring the stability of the quick fixing and separation function of the self-locking component 6, and ensuring smooth disassembly of components such as the impeller 11 during maintenance.

[0040] See Figure 6 In the above embodiment, there are four sets of springs 602, and the four sets of springs 602 are distributed in a rectangular array. The springs 602 are four sets of cylindrical helical springs with a diameter of 5-8mm, a free length of 30-50mm, and a compression stroke of 10-15mm. The four sets of springs 602 distributed in a rectangular array can provide elastic force evenly, ensuring that the pressing frame 603 is subjected to balanced force, making the fit between the fixing pin 604 and the fixing hole 8 more stable. This not only ensures the quick fixing effect during installation, but also allows for easy separation by pressing during maintenance, improving the convenience of operation.

[0041] See Figure 2 and Figure 3 In the above embodiment, the first slide 5 is slidably connected to the housing 1 via the guide rail 4. The guide rail 4 provides sliding support for the first slide 5. With the drive of the hydraulic cylinder 2, the first slide 5 and the fan structure above it can be moved out of the housing 1 as a whole, which is convenient for maintenance by staff and provides sufficient operating space for fan disassembly.

[0042] See Figure 5In the above embodiment, the slider 605 is provided in three sets, and the three sets of sliders 605 are equally distributed. The three sets of equally distributed sliders 605 enhance the connection stability between the second slide 601 and the first slide 5, and ensure that the second slide 601 (and the fan) slides more smoothly when it is separated or fixed by the self-locking component 6, so as to avoid shaking affecting the disassembly or installation operation.

[0043] Example 2: To reduce the sliding resistance of the first carriage 5, Example 2 is an improvement on Example 1. (See attached document.) Figure 3 The inner wall of the housing 1 is provided with a placement groove 12, and a roller 13 is placed inside the placement groove 12. The roller 13 abuts against the housing 1 and the first slide 5 respectively. The roller 13 converts sliding friction into rolling friction, reduces the friction between the first slide 5 and the housing 1, and makes the removal of the first slide 5 smoother. This ensures that when the fan needs to be disassembled for maintenance, the fan structure can be quickly moved out of the housing 1, thus improving the overall maintenance efficiency.

[0044] The implementation principle of this utility model is as follows: When the fan needs to be repaired, the staff opens the maintenance door 3 and simultaneously starts the hydraulic cylinder 2 on the back of the casing 1. The output end of the hydraulic cylinder 2 pushes the first slide 5 to slide along the guide rail 4 to the outside of the casing 1, so that the first slide 5 and the fan structure above it can be moved out of the casing 1 smoothly, obtaining sufficient maintenance space. If the impeller 11 and motor 10 need to be disassembled for in-depth maintenance, the staff presses the pressing frame 603 to compress the four sets of springs 602, so that the fixing pin 604 disengages from the fixing hole 8 at the top of the first slide 5. The second slide 601 can be quickly separated by sliding along the slide groove 7. The second slide 601 and other components can be separated from the first slide 5, and the fan can be completely disassembled for in-depth maintenance. After the maintenance is completed, the fixing pin 604 of the self-locking component 6 is quickly installed and fixed by cooperating with the fixing hole 8. Then the hydraulic cylinder 2 can retract the first slide 5 into the casing 1.

[0045] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A volute-less fan that is easy to maintain, comprising a casing (1) and an inspection door (3), characterized in that: A hydraulic cylinder (2) is installed on the back of the chassis (1). A guide rail (4) is connected to the lower part of the chassis (1). A first slide (5) is connected inside the guide rail (4). The back of the first slide (5) is connected to the output end of the hydraulic cylinder (2). A self-locking assembly (6) is connected inside the first slide (5). The self-locking assembly (6) includes a second slide (601) and a slider (605). A sealing plate (606) is bolted to the top of the slider (605). A spring (602) is connected inside the second slide (601). A pressing frame (603) is connected to the top of the spring (602). A fixing pin (604) is connected to the top of the pressing frame (603). A motor (10) is connected to one side of the top of the second slide (601) through a mounting bracket (9). An impeller (11) is connected to the output end of the motor (10).

2. The volute-free fan for easy maintenance according to claim 1, characterized in that: The first carriage (5) has a fixing hole (8) at the top, and the fixing pin (604) corresponds to the fixing hole (8).

3. The volute-free fan for easy maintenance according to claim 1, characterized in that: The first slide (5) is provided with a slide groove (7), and the second slide (601) and the slider (605) are slidably connected to the first slide (5) through the slide groove (7), and the pressing frame (603) slides along the inside of the second slide (601).

4. The volute-free fan for easy maintenance according to claim 1, characterized in that: The second slide (601), the pressing frame (603) and the slider (605) are all detachably connected to the first slide (5).

5. A volute-less fan for easy maintenance according to claim 1, characterized in that: The pressing frame (603) is detachably connected to the second slide (601).

6. A volute-less fan for easy maintenance according to claim 1, characterized in that: The spring (602) is provided in four groups, and the four groups of springs (602) are distributed in a rectangular array.

7. A volute-less fan for easy maintenance according to claim 1, characterized in that: The first carriage (5) is slidably connected to the chassis (1) via the guide rail (4).

8. A volute-free fan for easy maintenance according to claim 1, characterized in that: The inner wall of the chassis (1) is provided with a placement groove (12), and a roller (13) is placed inside the placement groove (12).

9. A volute-less fan for easy maintenance according to claim 1, characterized in that: The slider (605) is provided in three sets, and the three sets of sliders (605) are equidistantly distributed.

10. A volute-less fan for easy maintenance according to claim 8, characterized in that: The rollers (13) abut against the chassis (1) and the first carriage (5) respectively.

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