Explosion-proof miniature magnetic drive gear pump

Abstract

The explosion-proof miniature magnetic drive gear pump overcomes the defects in the prior art, eliminates electric sparks, and avoids the risk of mechanical seal leakage at the same time; in order to solve the technical problem, the technical scheme adopted by the utility model is as follows: the explosion-proof miniature magnetic drive gear pump comprises a gear pump and a motor, the power input end of the gear pump is connected with an outer fluted disc, the motor is fixedly arranged in an explosion-proof shell, the power output end of the motor is connected with an inner fluted disc, and the inner fluted disc is fixedly arranged in the explosion-proof shell. The inner fluted disc is arranged in the explosion-proof shell, and the outer fluted disc and the inner fluted disc are in non-contact magnetic coupling transmission; the device can be widely applied to the field of flammable and explosive liquid transmission.

Description

Technical Field

[0001] This utility model relates to an explosion-proof miniature magnetic drive gear pump, belonging to the field of flammable and explosive liquid transfer technology. Background Technology

[0002] With the increasing demands for safety, reliability, and compactness in fluid transfer systems for applications requiring liquid transport in flammable and explosive environments, such as the petrochemical industry, the limitations of traditional mechanical seal gear pumps are becoming increasingly apparent. Conventional motor-driven gear pumps, due to issues such as leakage risks caused by mechanical seal wear, the risk of ignition from electrical sparks, and their bulky size, struggle to meet the demands for high safety standards and miniaturization. Therefore, miniature explosion-proof magnetically driven gear pumps that combine explosion-proof motor technology with magnetic drive principles represent an important and worthy research topic. Utility Model Content

[0003] This invention overcomes the shortcomings of existing technologies and provides an explosion-proof miniature magnetic drive gear pump that eliminates electrical sparks while avoiding the risk of mechanical seal leakage.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: an explosion-proof micro magnetic drive gear pump, including a gear pump and a motor, wherein the power input end of the gear pump is connected to an external gear disk, the motor is fixedly installed inside the explosion-proof housing, the power output end of the motor is connected to an internal gear disk, the internal gear disk is installed inside the explosion-proof housing, and the external gear disk and the internal gear disk are connected by non-contact magnetic coupling transmission.

[0005] Furthermore, the structure of the gear pump includes: a pump body, a cover plate, a driving gear, a driven gear, a drive shaft, a fixed shaft, and a transmission shaft. One end of the transmission shaft is connected to an external gear disc, and the other end of the transmission shaft passes through the pump body and is connected to the drive shaft. The driving gear is fixedly mounted on the drive shaft, and the driven gear is movably mounted on the fixed shaft. The fixed shaft is fixedly mounted inside the pump body and is parallel to the drive shaft. The driving gear and the driven gear mesh with each other. An inlet and an outlet are respectively provided on both sides of the pump body, and the cover plate is fixedly mounted on the top of the pump body.

[0006] Furthermore, the cover plate is eccentrically positioned relative to the pump body.

[0007] Furthermore, both the outer and inner toothed disks are disc-shaped structures, and magnets with opposite polarities and spaced apart are arranged in a ring on one side of the disc-shaped structure. The surfaces of the outer and inner toothed disks containing the magnets are arranged opposite to each other.

[0008] Furthermore, the top of the explosion-proof shell is provided with a detachable magnetically permeable encapsulation plate, which is a circular plate structure and is fixed to the top of the explosion-proof shell by multiple screws.

[0009] Furthermore, the motor is fixed inside the explosion-proof enclosure by a U-shaped mounting bracket.

[0010] Furthermore, an explosion-proof gland is provided at the bottom of the explosion-proof housing, which is used to lead out the power cord of the motor.

[0011] Compared with the prior art, the advantages of this utility model are: This utility model adopts a collaborative design of explosion-proof and magnetic drive, which combines the inherent explosion-proof shell of the explosion-proof motor with the contactless transmission driven by magnetic force, and at the same time eliminates the risk of electrical sparks and mechanical seal leakage, forming an "electric-mechanical" dual explosion-proof system. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] Fig. 1 This is a schematic diagram of the structure of this utility model.

[0014] Fig. 2 This is a schematic diagram of the non-contact magnetic coupling transmission structure in this utility model.

[0015] Fig. 3 This is a schematic diagram of the gear pump in this utility model.

[0016] Fig. 4 This is a front structural diagram of the present invention.

[0017] Fig. 5 for Fig. 4 Schematic diagram of the cross-sectional structure at section AA.

[0018] In the diagram: 1 is the gear pump, 11 is the pump body, 12 is the cover plate, 13 is the driving gear, 14 is the driven gear, 15 is the drive shaft, 16 is the fixed shaft, 17 is the transmission shaft, 2 is the motor, 3 is the outer gear disc, 4 is the explosion-proof shell, 5 is the inner gear disc, 6 is the encapsulation plate, 7 is the fixing frame, and 8 is the explosion-proof gland. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments.

[0020] like Figs. 1-5As shown, this utility model discloses an explosion-proof micro magnetic drive gear pump, comprising a gear pump 1 and a motor 2. The power input end of the gear pump 1 is connected to an external gear disk 3. The motor 2 is fixedly installed inside an explosion-proof housing 4. The power output end of the motor 2 is connected to an internal gear disk 5, which is also installed inside the explosion-proof housing 4. The external gear disk 3 and the internal gear disk 5 are connected by non-contact magnetic coupling transmission. Both the external gear disk 3 and the internal gear disk 5 are disc-shaped structures, and magnets with opposite polarities and spaced apart are arranged in a ring on one side of the disc-shaped structure. The magnet surfaces of the external gear disk 3 and the internal gear disk 5 are arranged opposite to each other. A detachable magnetically permeable encapsulation plate 6 is provided on the top of the explosion-proof housing 4. The encapsulation plate 6 is a circular plate structure and is fixed to the top of the explosion-proof housing 4 by multiple screws. The motor 2 is fixed inside the explosion-proof housing 4 by a Z-shaped fixing bracket 7. An explosion-proof gland 8 is provided at the bottom of the explosion-proof housing 4 for leading out the power cord of the motor 2.

[0021] The gear pump 1 comprises a pump body 11, a cover plate 12, a driving gear 13, a driven gear 14, a drive shaft 15, a fixed shaft 16, and a transmission shaft 17. One end of the transmission shaft 17 is connected to the external gear disc 3, and the other end of the transmission shaft 17 passes through the pump body 11 and is connected to the drive shaft 15. The driving gear 13 is fixedly mounted on the drive shaft 15, and the driven gear 14 is movably mounted on the fixed shaft 16. The fixed shaft 16 is fixedly mounted inside the pump body 11 and is parallel to the drive shaft 15. The driving gear 13 and the driven gear 14 mesh with each other. The pump body 11 has an inlet and an outlet on its two sides, respectively. The cover plate 12 is fixedly mounted on the top of the pump body 11 and is eccentrically mounted to the pump body 11.

[0022] This novel explosion-proof motor, through its flameproof enclosure or intrinsically safe design, eliminates electrical sparks and high-temperature ignition sources, ensuring safe operation in explosive environments. The magnetic gear pump employs non-contact magnetic coupling transmission technology, using permanent magnets to achieve leak-free power transmission, avoiding the wear and leakage risks associated with traditional mechanical shaft seals. The combination of these two technologies not only inherits the zero-leakage and high corrosion resistance advantages of the magnetic pump but also further expands its application range in hazardous environments through the integration of the explosion-proof motor.

[0023] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An explosion-proof micro-magnetic drive gear pump comprising a gear pump (1) and a motor (2), characterized in that, The power input end of the gear pump (1) is connected with an external tooth disc (3), the motor (2) is fixedly arranged in an explosion-proof shell (4), the power output end of the motor (2) is connected with an internal tooth disc (5), the internal tooth disc (5) is arranged in the explosion-proof shell (4), and the external tooth disc (3) and the internal tooth disc (5) are non-contact magnetically coupled and driven.

2. The explosion-proof micro magnetic driving gear pump according to claim 1, characterized in that, The structure of the gear pump (1) comprises a pump body (11), a cover plate (12), a driving tooth (13), a driven tooth (14), a driving shaft (15), a fixed shaft (16) and a transmission shaft (17), one end of the transmission shaft (17) is connected with the external tooth disc (3), the other end of the transmission shaft (17) penetrates through the pump body (11) and is connected with the driving shaft (15), the driving tooth (13) is fixedly arranged on the driving shaft (15), the driven tooth (14) is movably arranged on the fixed shaft (16), the fixed shaft (16) is fixedly arranged in the pump body (11) and is arranged in parallel with the driving shaft (15), the driving tooth (13) and the driven tooth (14) are in mesh with each other, the pump body (11) is provided with a liquid inlet and a liquid outlet at two sides, and the cover plate (12) is fixedly arranged at the top end of the pump body (11).

3. The explosion-proof micro-magnetic driving gear pump according to claim 2, characterized in that, The cover plate (12) and the pump body (11) are arranged eccentrically.

4. The explosion-proof micro-magnetic driving gear pump according to claim 1, characterized in that, The external tooth disc (3) and the internal tooth disc (5) are both disc-shaped structures, one side of the disc-shaped structure is annularly provided with oppositely-polarized and spaced-apart magnets, and the magnet-arranged surfaces of the external tooth disc (3) and the internal tooth disc (5) are oppositely arranged.

5. The explosion-proof micro-magnetic gear pump of claim 1, wherein, The top of the explosion-proof shell (4) is provided with a detachable magnetic-permeable packaging plate (6), the packaging plate (6) is a circular plate-shaped structure and is fixed on the top of the explosion-proof shell (4) through a plurality of screws.

6. The explosion-proof micro-magnetic driving gear pump according to claim 1, characterized in that, The motor (2) is fixed in the explosion-proof shell (4) through a few-shaped fixing frame (7).

7. The explosion-proof micro-magnetic gear pump of claim 6, wherein, The bottom of the explosion-proof shell (4) is provided with an explosion-proof gland (8), and the explosion-proof gland (8) is used for leading out the power supply line of the motor (2). The top of the explosion-proof shell (4) is provided with a detachable magnetic-permeable packaging plate (6), the packaging plate (6) is a circular plate-shaped structure and is fixed on the top of the explosion-proof shell (4) through a plurality of screws.

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