Explosion-proof fan impeller dynamic balance detection connector

Abstract

The utility model provides an explosion-proof fan impeller dynamic balance detection connector, and relates to the technical field of fan impeller dynamic balance detection, the explosion-proof fan impeller dynamic balance detection connector comprises a middle shaft tube, an impeller and an explosion-proof shell, one end of the impeller is provided with an impeller shaft, two sides, the top and the bottom of the end part of the impeller shaft are provided with clamping blocks, a clamping groove is arranged in one end of the middle shaft tube, and the clamping blocks are clamped in the clamping groove. A clamping groove is formed in the middle of the middle shaft pipe, a clamping block is arranged in the clamping groove, the clamping groove and the clamping block are matched with each other, a connecting bolt penetrates through the clamping block and the clamping groove, a rotating groove is formed in the middle of the middle shaft pipe, a balance wheel is movably connected into the rotating groove, and the balance wheel and the rotating groove are matched with each other. And convenience and adaptability of dynamic balance adjustment of the impeller are remarkably improved. One end of the middle shaft pipe is matched with a clamping block at the end of the impeller shaft through a clamping groove, and a connecting bolt penetrates through and is fixed to achieve firm connection; and the telescopic section at the other end can be stretched to adjust the centering position and absorb vibration.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan also wheel dynamic balance detection technical field especially relates to a kind of explosion-proof fan impeller dynamic balance detection connector. BACKGROUND

[0002] Fan is indispensable rotating machinery equipment in industrial production and ventilation system, is widely used in petrochemical, electric power, metallurgy, coal mine and other fields, and the dynamic balance state of its impeller directly affects the operating efficiency, stability and service life of equipment.In flammable and explosive special environment, such as petrochemical plant or mine ventilation system, fan impeller balance detection not only needs to ensure mechanical performance, but also needs to meet strict safety requirements, to prevent explosion accident caused by excessive vibration or equipment failure spark.

[0003] Fan impeller dynamic balance detection equipment in prior art has the following problems when in use:1, most of the detection device design is relatively single, cannot automatically adjust balance position when impeller operates, and equipment is bulky, inconvenient to carry, and difficult to install and disassemble on site;At the same time, detection components are exposed, easy to be eroded by dust or explosive gas, affecting detection accuracy and safety.2, part of dynamic balance detection relies on manual adjustment, due to vibration generated by high-speed rotation of impeller or shaking of operator, easy to cause counterweight position deviation or detection data misalignment, difficult to realize accurate correction, especially in high-explosion-proof environment, manual operation may also increase safety hazards.Therefore, a kind of explosion-proof fan impeller dynamic balance detection connector is needed, which integrates rigid connection, dynamic counterweight adjustment, explosion-proof protection and real-time detection function, to solve the problems of insufficient portability, inconvenient adjustment and difficult to balance safety and accuracy in prior art. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the shortcomings in prior art, and provides an explosion-proof fan impeller dynamic balance detection connector.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an explosion-proof fan impeller dynamic balance detection connector, comprising a central shaft pipe, an impeller and an explosion-proof shell, one end of the impeller is provided with an impeller shaft, both sides, top and bottom of the impeller shaft end are provided with clamping blocks, the inside of one end of the central shaft pipe is provided with a clamping groove, the clamping groove and the clamping block are mutually adapted, a connecting bolt penetrates between the clamping block and the clamping groove, a rotating groove is formed in the middle of the central shaft pipe, a balance wheel is movably connected in the inside of the rotating groove, and the balance wheel and the rotating groove are mutually adapted.

[0006] Preferably, the middle of the front of both sides of the balance wheel is provided with a connecting head, and the two sides of the balance wheel are annularly arrayed with counterweight clamps.

[0007] Preferably, the outer part of the explosion-proof shell is coated with an electromagnetic shielding sleeve, and the inner wall of the explosion-proof shell is provided with a damping shell.

[0008] Preferably, a cooling water pipe is arranged between the explosion-proof shell and the damping shell, the cooling water pipe is filled with cooling liquid, and the cooling water pipe is annular.

[0009] Preferably, the surface of the damping shell is annularly arranged with honeycomb leakage holes.

[0010] Preferably, the other end of the middle shaft pipe is movably connected with an extension section.

[0011] Preferably, the top of one end of the explosion-proof shell is embedded with a sensor interface, the bottom end of the sensor interface is provided with a transmission line, the end of the transmission line is provided with a sensor end group, and the sensor end group is located in the middle shaft pipe and close to the balancing wheel.

[0012] Beneficial effects

[0013] In the utility model, the modular design of the overall equipment through the middle shaft pipe, the balancing wheel and other components significantly improves the convenience and adaptability of the impeller dynamic balance adjustment. The one end of the middle shaft pipe is matched with the clamping block of the impeller shaft end through the clamping groove, the connecting bolt is penetrated and fixed, and firm connection is realized; the extension section of the other end can be stretched to adjust the centering position and absorb vibration. The inner rotating groove of the middle shaft pipe is slidably connected with the balancing wheel through the ball bearing, the connecting heads on both sides of the balancing wheel are driven by the manual tool or the stepping motor, and the counterweight bayonet can be inserted into the lead block counterweight. The user can adjust the gravity according to the unbalanced state of the impeller on site, and overcome the defects that the balance position cannot be automatically adjusted in the prior art. The middle shaft pipe, the balancing wheel and other components adopt modular design, are easy to disassemble and replace, the user can quickly adjust the accessories according to different impeller sizes, the problems of large equipment size, inconvenient carrying and difficult installation are solved, the whole design is portable and efficient, and is suitable for various detection scenes.

[0014] In the utility model, through the integrated design of the explosion-proof shell and the sensor system, the safety and detection accuracy in the flammable and explosive environment are ensured. The outer part of the explosion-proof shell is coated with an electromagnetic shielding sleeve, the inner wall is attached to the damping shell, and the annular cooling water pipe is filled with cooling liquid, so that heat can be effectively dissipated. The sensor end group is fixed in the middle shaft pipe close to the balancing wheel, and is transmitted by wire when stationary, and is transmitted by Bluetooth module when rotating. Data is received by NIUSB-acquisition card, manual adjustment is replaced, and counterweight deviation or data misalignment caused by hand shaking is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the overall structure side view of the utility model;

[0016] Figure 2 It is the front view of the utility model.

[0017] Figure 3 The utility model discloses a component structure diagram;

[0018] Figure 4 The utility model discloses a dismounting schematic view;

[0019] Figure 5 The utility model discloses a middle shaft pipe internal structure diagram;

[0020] Figure 6 The utility model discloses a balance wheel surface structure diagram.

[0021] Legend:

[0022] 1, middle shaft pipe, 2, electromagnetic shield sleeve layer, 3, connecting bolt, 4, impeller, 5, impeller shaft, 6, clamping block, 7, clamping groove, 8, explosion-proof shell, 9, sensor interface, 10, telescopic section, 11, damping shell, 12, cooling water pipe, 13, honeycomb leak hole, 14, transmission line, 15, sensor end group, 16, balance wheel, 17, rotating groove, 18, counterweight bayonet, 19, connecting head. DETAILED DESCRIPTION

[0023] In order to make the technical means, creation features, purposes and effects of the utility model easy to understand, the following further describes the utility model in combination with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative labor all belong to the protection scope of the utility model.

[0024] The specific embodiments of the utility model are described below in combination with the drawings. Specific embodiment one:

[0026] Reference Figures 1-6 An explosion-proof fan impeller dynamic balance detection connector, including middle shaft pipe 1, impeller 4 and explosion-proof shell 8, one end of impeller 4 is equipped with impeller shaft 5, both sides and top and bottom of the end of impeller shaft 5 are equipped with clamping block 6, the inside of one end of middle shaft pipe 1 is equipped with clamping groove 7, clamping groove 7 and clamping block 6 are mutually adapted, and the connecting bolt 3 is penetrated between clamping block 6 and clamping groove 7, the middle part in middle shaft pipe 1 is provided with rotating groove 17, and balance wheel 16 is movably connected in the inside of rotating groove 17, and balance wheel 16 and rotating groove 17 are mutually adapted.

[0027] As Figure 5 Indicated, balance wheel 16 can rotate in rotating groove 17, one end of middle shaft pipe 1 is connected with impeller shaft 5, and the other end telescopic section 10 is telescopic, and it needs to be explained that the whole middle shaft pipe 1 can be split in half, which can facilitate dismounting and installation, and the middle shaft pipe 1 split in half is clamped.

[0028] The middle part of the front of the two sides of the balancing wheel 16 is provided with a connecting head 19, and the two sides of the balancing wheel 16 are annularly arranged with a counterweight bayonet 18.

[0029] A counterweight block can be placed in each counterweight bayonet 18. In the application process, it is placed according to the needs, and the connecting head 19 here is pre-set and can be connected to a tool or a driving device.

[0030] The outer part of the explosion-proof shell 8 is coated with an electromagnetic shielding sleeve 2, and the inner wall of the explosion-proof shell 8 is provided with a damping shell 11.

[0031] Figure 2 The whole connector assembly is shown.

[0032] A cooling water pipe 12 is laid between the explosion-proof shell 8 and the damping shell 11, and the cooling water pipe 12 is annularly arranged.

[0033] The surface of the damping shell 11 is annularly arranged with a honeycomb leak hole 13, and the other end of the middle shaft pipe 1 is movably connected with an extension section 10.

[0034] The top of one end of the explosion-proof shell 8 is embedded with a sensor interface 9, the bottom end of the sensor interface 9 is provided with a transmission line 14, the end of the transmission line 14 is installed with a sensor end group 15, and the sensor end group 15 is located inside the middle shaft pipe 1 and close to the balancing wheel 16.

[0035] The transmission line 14 here bypasses the cooling water pipe 12 and passes through the damping shell 11, and the sensor end group 15 contains multiple groups of sensors. External personnel can obtain sensor detection data through the sensor interface 9. It should be noted that this wired method can be used in a static state, and a wireless transmission method needs to be provided during testing. This does not belong to the core technology of the scheme, so it will not be described in detail here. Specific embodiment two:

[0037] Reference Figures 1-6 The "explosion-proof fan impeller dynamic balancing detection connector" is fixed and dynamically balanced by the rigid connection of the middle shaft pipe 1 and the impeller shaft 5, and the safety and detection functions are ensured by the explosion-proof shell 8 and the sensor system. The following is the detailed working principle:

[0038] During connector installation, the slot 7 at one end of the central shaft tube 1 aligns with the locking block 6 at the end of the impeller shaft 5. The locking block 6 is inserted into the slot 7 and secured by the connecting bolt 3, ensuring that the central shaft tube 1 and the impeller shaft 5 become a single unit. The telescopic section 10 at the other end of the central shaft tube 1 is a nested cylindrical structure with a telescopic range of 5-10mm. It is covered by a rubber sleeve, allowing for telescopic adjustment, alignment, and vibration absorption. A rotating groove 17 is located in the center of the central shaft tube 1, within which a balance wheel 16 is movably connected. The balance wheel 16 slides within the rotating groove 17 via ball bearings, allowing it to rotate 0-360 degrees. Connectors 19 are located on both sides of the balance wheel 16 for use with hand tools or stepper motors. A counterweight slot 18 is arranged in a ring on both sides for inserting counterweights, which can be lead blocks weighing 5g or 10g, depending on the desired weight.

[0039] When the impeller 4 rotates, the impeller shaft 5 drives the central shaft tube 1 to rotate synchronously. The balance wheel 16 rotates with the central shaft tube 1. The position of its counterweight is fixed through prior adjustment, changing the center of gravity distribution and correcting the imbalance of the impeller 4. The explosion-proof housing 8 is coated with an electromagnetic shielding layer 2 made of conductive polyurethane, 0.2mm thick. The inner wall of the explosion-proof housing 8 is fitted with a vibration damping housing 11 made of silicone. The surface of the vibration damping housing 11 has honeycomb perforations 13 to absorb vibration. An annular cooling water pipe 12 is provided between the explosion-proof housing 8 and the vibration damping housing 11 for heat dissipation.

[0040] The explosion-proof housing 8 has a sensor interface 9 embedded in its top, which connects to the transmission line 14. The line bypasses the cooling water pipe 12, passes through the perforation of the vibration damping housing 11, and enters the interior of the central shaft tube 1. The sensor end group 15 contains an ADXL345 vibration sensor and a K-type thermocouple, which are fixed inside the central shaft tube 1 near the balance wheel 16. Data is collected via brushes or wirelessly, such as through a Bluetooth module HC-05, and transmitted to an external NI USB-6001 data acquisition card. When the impeller 4 rotates, the sensor detects vibration and temperature. If there is an imbalance, the impeller is stopped, and the position of the balance wheel 16 and the counterweight are adjusted via the connector 19. The process is restarted and verified until balance is achieved. The transmission line 14 here is a data transmission method and is optional.

[0041] In summary:

[0042] 1. During connector installation in this equipment, the slot 7 at one end of the central shaft tube 1 is aligned with the locking block 6 at the end of the impeller shaft 5. The locking block 6 is inserted into the slot 7 and fixed by the connecting bolt 3, ensuring that the central shaft tube 1 and the impeller shaft 5 become one unit. The telescopic section 10 at the other end of the central shaft tube 1 is a nested cylindrical structure with a telescopic range of 5-10mm. The outer sleeve is a rubber sheath, which allows for telescopic adjustment, alignment, and vibration absorption. A rotating groove 17 is provided in the center of the central shaft tube 1, and a balance wheel 16 is movably connected within the rotating groove 17. The balance wheel 16 is slidably fitted with the rotating groove 17 via ball bearings and can rotate 0-360 degrees within the rotating groove 17.

[0043] 2. When the impeller 4 rotates, the impeller shaft 5 drives the central shaft tube 1 to rotate synchronously. The balance wheel 16 rotates with the central shaft tube 1. The position of its counterweight is fixed through prior adjustment, changing the center of gravity distribution and correcting the imbalance of the impeller 4. The explosion-proof housing 8 is coated with an electromagnetic shielding layer 2 made of conductive polyurethane, 0.2mm thick. The inner wall of the explosion-proof housing 8 is fitted with a vibration damping housing 11 made of silicone. The surface of the vibration damping housing 11 has honeycomb perforations 13 to absorb vibration.

[0044] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof fan impeller dynamic balancing test connector, comprising a central shaft tube (1), an impeller (4), and an explosion-proof housing (8), characterized in that: One end of the impeller (4) is provided with an impeller shaft (5), and the two sides, top and bottom of the impeller shaft (5) are provided with locking blocks (6). The interior of one end of the central shaft tube (1) is provided with a locking groove (7). The locking groove (7) and the locking block (6) are adapted to each other. A connecting bolt (3) passes through the locking block (6) and the locking groove (7). A rotating groove (17) is opened in the middle of the central shaft tube (1). A balance wheel (16) is movably connected inside the rotating groove (17). The balance wheel (16) and the rotating groove (17) are adapted to each other.

2. The explosion-proof fan impeller dynamic balancing test connector according to claim 1, characterized in that: The balance wheel (16) has a connector (19) in the middle of the front side on both sides, and the balance wheel (16) has a counterweight bayonet (18) arranged in a ring on both sides.

3. The explosion-proof fan impeller dynamic balancing test connector according to claim 2, characterized in that: The explosion-proof housing (8) is coated with an electromagnetic shielding layer (2) on the outside, and the inner wall of the explosion-proof housing (8) is provided with a vibration damping housing (11).

4. The explosion-proof fan impeller dynamic balancing test connector according to claim 3, characterized in that: A cooling water pipe (12) is laid between the explosion-proof housing (8) and the vibration-damping housing (11). Coolant flows through the cooling water pipe (12), and the cooling water pipe (12) is annular.

5. The explosion-proof fan impeller dynamic balancing test connector according to claim 4, characterized in that: The surface of the vibration damping housing (11) has a ring array of honeycomb perforations (13).

6. The explosion-proof fan impeller dynamic balancing test connector according to claim 5, characterized in that: The other end of the central tube (1) is movably connected to a telescopic section (10).

7. The explosion-proof fan impeller dynamic balancing test connector according to claim 6, characterized in that: The explosion-proof housing (8) has a sensor interface (9) embedded at the top of one end. The bottom of the sensor interface (9) is provided with a transmission line (14). The end of the transmission line (14) is equipped with a sensor end group (15). The sensor end group (15) is located inside the central tube (1) and close to the balance wheel (16).

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