A sealed low-noise explosion-proof motor

Abstract

The utility model provides a sealed low noise explosion -proof motor relates to motor technical field, include: explosion -proof casing, the bottom position of explosion -proof casing is equipped with two steady legs with bolt mounting hole, the one side installation of explosion -proof casing first seal cover, the inside position installation of explosion -proof casing motor body, the other side installation of explosion -proof casing one connection flange, install a group of locking bolt that is annular array distribution between explosion -proof casing and connection flange. Conveying pump has replaced traditional fan heat dissipation, has reduced the generation of mechanical vibration and noise, in the operation process, motor can keep quiet and stable, has improved the working environment significantly, has reduced the influence of noise to operating personnel, the loose frame will a group of bolt fast anti -loose, avoids the seal cover of binding post loose, avoids connection flange loose, operating personnel will loose frame reverse push after can realize the quick unlocking of locking bolt, has improved the practicality and stability of anti -loose.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a sealed, low-noise, explosion-proof motor. Background Technology

[0002] In the petroleum, chemical, and coal mining industries, flammable gases, vapors, or dust are often present in the working environment. This makes explosion-proof motors a key piece of equipment for ensuring production safety. However, traditional explosion-proof motors still have the following problems when in use:

[0003] Traditional explosion-proof motors mostly rely on axial fans for forced cooling. When the fan runs at high speed, it will generate a lot of noise, which will interfere with the working environment. In addition, the fan bearings are prone to wear and require frequent maintenance. At the same time, it is easy to cause local overheating of the motor windings, which will affect the service life and performance stability of the motor.

[0004] The bolted connection structure of traditional explosion-proof motors is prone to loosening under long-term vibration of the equipment. Checking and tightening the bolts requires a lot of time and manpower. In addition, the seal of the junction box often fails due to loose bolts, which can easily lead to the failure of the explosion-proof motor's seal and allow the medium to enter. Utility Model Content

[0005] This utility model relates to a sealed, low-noise, explosion-proof motor. When installing or removing the second sealing cover, pull the lifting rod upwards, and the first anti-loosening bracket disengages from the gear ring. At this time, the locking bolt of the second sealing cover is unlocked. After removing the locking bolt, the second sealing cover can be completed, and the wiring terminals can be quickly inspected. After releasing the lifting rod, the support spring automatically presses the first anti-loosening bracket back, completing the re-locking without the locking bolt.

[0006] This utility model provides a sealed, low-noise, explosion-proof motor, specifically comprising: an explosion-proof housing; two stabilizing legs with bolt mounting holes at the bottom of the explosion-proof housing; a first sealing cover installed on one side of the explosion-proof housing; a motor body installed on the inner side of the explosion-proof housing; a connecting flange installed on the other side of the explosion-proof housing; a set of locking bolts arranged in a circular array between the explosion-proof housing and the connecting flange; a terminal block located at the top of the explosion-proof housing; a second sealing cover installed above the terminal block; a set of locking bolts also installed between the second sealing cover and the terminal block; a first anti-loosening bracket installed above the second sealing cover; a rotating groove formed on the inner side of the connecting flange; a positioning ring installed inside the rotating groove; and a delivery pump installed on the outer side of the first sealing cover.

[0007] Furthermore, a flow hole is provided on the inner side of the explosion-proof housing, and a set of guide plates is provided on the inner side of the flow hole. A water inlet sleeve is provided on one side of the first sealing cover, and a water outlet sleeve is provided on the other side of the first sealing cover. The water inlet sleeve and the guide plates are aligned.

[0008] Furthermore, the pump is provided with a bend on each side, and the inlet sleeve and outlet sleeve of the first sealing cover extend into the interior of the bend.

[0009] Furthermore, a drive shaft is installed at the center of the motor body, and a set of slots arranged in a circular array are opened on one side of the drive shaft. The slots are arc-shaped, and a set of docking slots are opened at the center of the delivery pump. The drive shaft engages with the slots and docking slots on one side.

[0010] Furthermore, a gear ring is installed on the outer side of the large end of the locking bolt. The gear ring has a rectangular structure, and a set of locking holes corresponding to the gear ring are opened at the corner of the first anti-loosening bracket. The gear ring and the locking holes mesh.

[0011] Furthermore, two symmetrically distributed positioning rods are provided above the second sealing cover. A sliding hole corresponding to the positioning rod is opened on each side of the first anti-loosening bracket. The positioning rod passes through the interior of the sliding hole, and a support spring is installed on the outer side of the positioning rod.

[0012] Furthermore, two symmetrically distributed lifting rods are provided above the first anti-loosening frame, and the lifting rods have a cylindrical stepped structure.

[0013] Furthermore, a second anti-loosening bracket is provided on the outer side of the positioning ring, and a connecting rod is provided between the positioning ring and the second anti-loosening bracket. A bending spring is installed on the outer side of the positioning ring, and a set of anti-loosening plates distributed in a ring array are provided on the inner side of the second anti-loosening bracket. The anti-loosening plates are in slight contact with the locking bolts of the connecting flange. The positioning ring and the second anti-loosening bracket cooperate with each other to form an anti-loosening structure.

[0014] This utility model provides a sealed, low-noise, explosion-proof motor, which has the following advantages:

[0015] In this utility model, the motor body directly drives the delivery pump, realizing the integrated design of power, reducing energy loss during energy transmission, improving energy utilization efficiency, and eliminating the need for external power supply and additional control circuits, thereby reducing the risk of electrical failures and improving equipment safety.

[0016] The baffle guides the coolant to flow evenly within the explosion-proof housing. Combined with the forced circulation of the delivery pump, it can promptly remove the heat generated by the motor, ensuring that the motor maintains a suitable temperature during long-term operation. The efficient heat dissipation system helps extend the service life of the motor and improve its performance stability.

[0017] The delivery pump replaces the traditional fan cooling, reducing mechanical vibration and noise. During operation, the motor remains quiet and stable, significantly improving the working environment and reducing the impact of noise on operators.

[0018] An anti-loosening bracket is installed to quickly prevent a group of bolts from loosening, thus preventing the terminal block's sealing cover from loosening and the connecting flange from loosening. The operator can quickly unlock the locking bolts by pushing the anti-loosening bracket in the opposite direction, improving the practicality and stability of the anti-loosening mechanism.

[0019] In addition, when an accidental explosion occurs inside the motor, the explosion-proof housing can effectively block and release the explosive energy, preventing harm to the surrounding environment and providing reliable safety for industrial production. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0021] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the present invention.

[0022] In the attached diagram:

[0023] Figure 1 A schematic diagram of the shaft side structure of the explosion-proof motor after assembly according to this utility model is shown;

[0024] Figure 2 This utility model illustrates Figure 1 A schematic diagram of the axonal structure from an elevation viewpoint;

[0025] Figure 3 A schematic diagram of the shaft side structure after the locking bolt of this utility model is unlocked is shown;

[0026] Figure 4 A schematic diagram of the axial structure of the explosion-proof motor disassembly structure of this utility model is shown;

[0027] Figure 5 The diagram shows a half-section view of the explosion-proof housing and the first sealing cover of this utility model.

[0028] Figure 6 This invention provides a schematic diagram of the axial side structure of a partially cross-sectional structure of the explosion-proof housing.

[0029] Figure 7 This utility model illustrates Figure 3 A magnified structural diagram at point A.

[0030] List of reference numerals

[0031] 1. Explosion-proof housing; 101. Deflector plate; 102. First sealing cover;

[0032] 2. Motor body; 201. Drive shaft;

[0033] 3. Connecting flange;

[0034] 4. Second sealing cover; 401. Positioning rod;

[0035] 5. Locking bolts; 501 gear ring;

[0036] 6. First anti-loosening frame; 601. Lifting rod;

[0037] 7. Anti-loosening structure; 701. Positioning ring; 702. Second anti-loosening frame;

[0038] 8. Transfer pump. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0040] Example 1: Please refer to Figures 1 to 7 :

[0041] This utility model proposes a sealed, low-noise explosion-proof motor, comprising: an explosion-proof housing 1; two stabilizing legs with bolt mounting holes at the bottom of the explosion-proof housing 1; a first sealing cover 102 installed on one side of the explosion-proof housing 1; the explosion-proof housing 1 and the first sealing cover 102 can be securely assembled using an interference fit structure or by welding; the first sealing cover 102 seals one side of the explosion-proof housing 1 after installation; and a motor body 2 installed on the inner side of the explosion-proof housing 1. The specific model of the motor body 2 is selected from existing technologies according to actual needs. The explosion-proof housing 1 covers the motor body 2. For explosion protection, the explosion-proof housing 1 is made of commonly used industrial materials. A flow hole is provided on the inner side of the explosion-proof housing 1, and a set of guide plates 101 are provided on the inner side of the flow hole. A water inlet sleeve is provided on one side of the first sealing cover 102, and a water outlet sleeve is provided on the other side of the first sealing cover 102. The water inlet sleeve and the guide plate 101 are aligned, so the coolant can pass through the inside of the water inlet sleeve and enter between the two guide plates 101. The guide plate 101 transports the coolant to the other side of the explosion-proof housing 1, so that the coolant can flow evenly inside the explosion-proof housing 1. The coolant dissipates heat from the explosion-proof housing 1 and the motor body 2.

[0042] In this embodiment, a connecting flange 3 is installed on the other side of the explosion-proof housing 1. A set of locking bolts 5 arranged in a circular array is installed between the explosion-proof housing 1 and the connecting flange 3. After the locking bolts 5 are installed, the explosion-proof housing 1 and the connecting flange 3 are securely assembled. After the connecting flange 3 is installed, the other side of the explosion-proof housing 1 is sealed. The pitch of the locking bolts 5 is processed according to actual needs. A terminal block is provided at the top of the explosion-proof housing 1. A second sealing cover 4 is installed above the terminal block. A set of locking bolts 5 is also installed between the second sealing cover 4 and the terminal block. After installation, the second sealing cover 4 is tightened. The second sealing cover 4 seals the top of the connector. A gear ring 501 is installed on the outer side of the large end of the locking bolt 5. The gear ring 501 has a rectangular structure. The locking bolt 5 and the gear ring 501 are assembled with an interference fit. A set of locking holes corresponding to the gear ring 501 are opened at the corner of the first anti-loosening bracket 6. The gear ring 501 and the locking holes mesh. Therefore, the first anti-loosening bracket 6, together with the locking holes and the gear ring 501, quickly prevents the locking bolt 5 from being loosened, thus avoiding the second sealing cover 4 from being loosened after the locking bolt 5 is loosened.

[0043] In this embodiment, a first anti-loosening bracket 6 is installed above the second sealing cover 4. Two symmetrically distributed positioning rods 401 are provided above the second sealing cover 4. A sliding hole corresponding to the positioning rod 401 is opened on each side of the first anti-loosening bracket 6. The positioning rod 401 passes through the interior of the sliding hole. Therefore, the positioning rod 401 positions the first anti-loosening bracket 6 circumferentially and laterally. A support spring is installed on the outer side of the positioning rod 401. The support spring presses the first anti-loosening bracket 6 downward elastically, so that the first anti-loosening bracket 6 stably prevents the locking bolt 5 from loosening. Two symmetrically distributed lifting rods 601 are provided above the first anti-loosening bracket 6. The lifting rod 601 has a cylindrical stepped structure. After the operator applies a pulling force to the lifting rod 601, the first anti-loosening bracket 6 is lifted upward. At this time, the locking bolt 5 is manually and quickly unlocked. A rotating groove is opened on the inner side of the connecting flange 3. A positioning ring 701 is installed inside the rotating groove. The rotating groove positions the installation position of the positioning ring 701 laterally and vertically, so that the positioning ring 701 is forced to rotate stably in a circular motion.

[0044] In this embodiment, a second anti-loosening bracket 702 is provided on the outer side of the positioning ring 701. A connecting rod is provided between the positioning ring 701 and the second anti-loosening bracket 702. The operator can combine the positioning ring 701 and the second anti-loosening bracket 702 as needed. The positioning ring 701 and the second anti-loosening bracket 702 can be welded together. At the same time, the positioning ring 701 and the second anti-loosening bracket 702 can be snapped together with the connecting rod to form a stable whole. A bending spring is installed on the outer side of the positioning ring 701 to support the positioning ring 701 and the second anti-loosening bracket 702 to return to their original position. A set of anti-loosening plates distributed in a ring array is provided on the inner side of the second anti-loosening bracket 702. The anti-loosening plates are in slight contact with the locking bolts 5 of the connecting flange 3. The two anti-loosening brackets 702 work together to quickly prevent the locking bolts 5 of the connecting flange 3 from loosening. The positioning ring 701 and the second anti-loosening bracket 702 work together to form the anti-loosening structure 7, which prevents the connecting flange 3 from loosening. The operator can quickly unlock the locking bolts 5 by pushing the second anti-loosening bracket 702 in the opposite direction. A delivery pump 8 is installed on the outer side of the first sealing cover 102. There is a bend on each side of the delivery pump 8. The water inlet sleeve and water outlet sleeve of the first sealing cover 102 extend into the inside of the bend. According to the actual needs, the delivery pump 8 is selected from the existing technology, and the delivery pump 8 can deliver coolant into the inside of the water inlet sleeve when it is running. The returning coolant passes through the inside of the water outlet sleeve and re-enters the inside of the delivery pump 8. This step needs to be completed with reference to the conventional methods of the existing technology.

[0045] In this embodiment, a drive shaft 201 is installed at the center of the motor body 2. A set of slots arranged in a circular array are opened on one side of the drive shaft 201. The slots are arc-shaped. A set of docking slots are opened at the center of the delivery pump 8. The drive shaft 201 engages with the slots and docking slots. The circular array of slots allows the drive shaft 201 and the delivery pump 8 to quickly engage at different angles. Therefore, the motor body 2 can drive the delivery pump 8 to run simultaneously, making full use of the driving force of the motor body 2, and also avoiding the need for the delivery pump 8 to be powered by an external power source.

[0046] Example 2, based on Example 1, such as Figures 1-6 As shown, a sealing ring needs to be installed between the explosion-proof housing 1 and the connecting flange 3, a sealing ring needs to be installed between the terminal block and the second sealing cover 4, and a sealing ring needs to be installed at the center of the connecting flange 3. After the sealing rings are installed, the assembly of the sealed low-noise explosion-proof motor is completed.

[0047] The working principle of this embodiment:

[0048] The explosion-proof motor is fixed to the flat base through the bolt mounting holes of the stabilizing leg. Sealing rings are installed between the explosion-proof housing 1 and the connecting flange 3, and between the terminal block and the second sealing cover 4, as required in Example 2, to ensure tight sealing of all mating surfaces. The elbow of the delivery pump 8 is connected to the inlet and outlet sleeves of the first sealing cover 102 to ensure no leakage in the coolant pipeline. A special coolant, such as an ethylene glycol aqueous solution, is injected into the cooling system. The delivery pump 8 is then installed securely on the outside of the first sealing cover 102, ensuring that the center of the delivery pump 8 is aligned with the drive shaft 201.

[0049] When installing or removing the second sealing cover 4, pull the lifting rod 601 upwards. The first anti-loosening bracket 6 disengages from the gear ring 501. At this time, the locking bolt 5 of the second sealing cover 4 is unlocked. After removing the locking bolt 5, the second sealing cover 4 can be completed. The wiring terminals can be quickly inspected. After releasing the lifting rod 601, the support spring will automatically press the first anti-loosening bracket 6 back, completing the re-locking of the locking bolt 5.

[0050] When installing or removing the connecting flange 3, push the second anti-loosening bracket 702 in the opposite direction to disengage the anti-loosening plate of the second anti-loosening bracket 702 from the locking bolt 5, thereby unlocking the locking bolt 5. At this time, the connecting flange 3 can be flexibly removed for internal inspection or replacement of the sealing ring.

[0051] After the motor body 2 is connected to the power supply, the motor body 2 drives the delivery pump 8 to run. When the delivery pump 8 is running, it can deliver coolant to the inside of the inlet sleeve. The returning coolant passes through the inside of the outlet sleeve and re-enters the inside of the delivery pump 8. The coolant cools the motor body 2.

[0052] The above steps, combined with the equipment's sealing structure, anti-loosening design, and cooling system characteristics, cover the entire process from installation and commissioning to maintenance and storage, highlighting the advantages of this explosion-proof motor in terms of ease of operation, operational reliability, and efficient maintenance.

Claims

1. A sealed, low-noise, explosion-proof motor, comprising: An explosion-proof housing (1), locking bolts (5) and a first anti-loosening bracket (6) are provided. The bottom of the explosion-proof housing (1) is provided with two stabilizing legs with bolt mounting holes. A first sealing cover (102) is installed on one side of the explosion-proof housing (1). A motor body (2) is installed on the inner side of the explosion-proof housing (1). The explosion-proof housing (1) is characterized by a connecting flange (3) installed on the other side of the explosion-proof housing (1). A set of locking bolts (5) arranged in a ring array is installed between the explosion-proof housing (1) and the connecting flange (3). A terminal block is provided on the top of the explosion-proof housing (1). A second sealing cover (4) is installed on the top of the terminal block. A set of locking bolts (5) is also installed between the second sealing cover (4) and the terminal block. A first anti-loosening bracket (6) is installed on the top of the second sealing cover (4). A rotating groove is opened on the inner side of the connecting flange (3). A positioning ring (701) is installed inside the rotating groove. A delivery pump (8) is installed on the outer side of the first sealing cover (102).

2. The sealed, low-noise, explosion-proof motor according to claim 1, characterized in that, The explosion-proof housing (1) has a flow hole on its inner side, and a set of guide plates (101) is provided on the inner side of the flow hole. A water inlet sleeve is provided on one side of the first sealing cover (102), and a water outlet sleeve is provided on the other side of the first sealing cover (102). The water inlet sleeve and the guide plate (101) are aligned.

3. The sealed, low-noise, explosion-proof motor according to claim 1, characterized in that, The pump (8) has a bend on each side, and the inlet sleeve and outlet sleeve of the first sealing cover (102) extend into the inside of the bend.

4. A sealed, low-noise, explosion-proof motor according to claim 1, characterized in that, A drive shaft (201) is installed at the center of the motor body (2). A set of slots arranged in a ring array are opened on one side of the drive shaft (201). A set of docking slots are opened at the center of the delivery pump (8). The drive shaft (201) engages with the slots and docking slots on one side.

5. A sealed, low-noise, explosion-proof motor according to claim 1, characterized in that, A gear ring (501) is installed on the outer side of the large end of the locking bolt (5), and a set of locking holes corresponding to the gear ring (501) are opened at the corner of the first anti-loosening bracket (6), and the gear ring (501) and the locking holes mesh.

6. A sealed, low-noise, explosion-proof motor according to claim 1, characterized in that, The second sealing cover (4) has two symmetrically distributed positioning rods (401) at the top. The first anti-loosening bracket (6) has a sliding hole on each side corresponding to the positioning rod (401). The positioning rod (401) passes through the inside of the sliding hole, and a support spring is installed on the outside of the positioning rod (401).

7. A sealed, low-noise, explosion-proof motor according to claim 1, characterized in that, Two symmetrically distributed lifting rods (601) are provided above the first anti-loosening frame (6).

8. A sealed, low-noise, explosion-proof motor according to claim 1, characterized in that, A second anti-loosening bracket (702) is provided on the outer side of the positioning ring (701). A connecting rod is provided between the positioning ring (701) and the second anti-loosening bracket (702). A bending spring is installed on the outer side of the positioning ring (701). A set of anti-loosening plates distributed in a ring array is provided on the inner side of the second anti-loosening bracket (702). The anti-loosening plates and the locking bolts (5) of the connecting flange (3) are in slight contact. The positioning ring (701) and the second anti-loosening bracket (702) cooperate with each other to form an anti-loosening structure (7).

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