CN207278532U - A kind of Magnetic driving formula high-temperature resistant pump - Google Patents

Abstract

The utility model belongs to the technical field of pumps, in particular to a magnetically driven high-temperature resistant pump, which includes a pump body, an impeller assembly and a magnetic drive assembly for driving the impeller assembly to work. Cooling device for driving component temperature. The beneficial effects of the utility model are: the high temperature resistant pump of the utility model is equipped with a cooling device, which can effectively reduce the temperature of the inner and outer magnetic rotors when the pump body is working, and avoids the excessive temperature of the inner and outer magnetic rotors when the temperature of the conveying liquid is too high. When it is high, due to the loss of magnetism, the transmission efficiency of the motor will decrease, and the efficiency of the pump will also decrease. The axial flow fan cooling replaces the traditional external forced water circulation cooling, which has a simple structure and convenient operation, and has a better cooling effect on the inner and outer magnetic rotors, greatly improving the transmission efficiency of the motor.

Description

A magnetically driven high temperature resistant pump

technical field

The utility model belongs to the technical field of pumps, in particular to a magnetically driven high temperature resistant pump.

Background technique

The magnetic drive high temperature resistant pump is mainly used in the petrochemical industry. The magnetic drive high temperature resistant pump is a kind of chemical process pump that applies the principle of modern magnetism and uses permanent magnets to realize non-contact indirect transmission. The magnetic drive high temperature resistant pump consists of three parts: pump, magnetic drive and motor. When the motor drives the outer rotor assembly to rotate, the magnetic force lines pass through the isolation sleeve to drive the inner rotor assembly and the impeller to rotate synchronously through the action of the magnetic field, and the medium is completely enclosed in the stationary isolation sleeve, so as to achieve the purpose of pumping the medium without leakage The leakage of the shaft seal of the mechanical transmission pump is eliminated, and it is a new type of industrial pump with full sealing, no leakage and no pollution. Magnetic drive high temperature resistant pump is an ideal pump to eliminate running, popping, dripping and leaking in the chemical process, eliminate environmental pollution, create "no leakage workshop" and "no leakage factory", and realize safe and civilized production. However, because the inner and outer magnetic rotors will lose their magnetism when the temperature of the conveying liquid is too high, the transmission efficiency of the motor will decrease, and the efficiency of the pump will also decrease. And because the axial impact of the inlet liquid flow on the impeller produces a large axial force, the vibration of the pump increases, and the overall efficiency of the pump decreases.

Utility model content

In order to solve the above problems, the purpose of this utility model is to provide a magnetically driven high temperature resistant pump, which can effectively reduce the temperature of the inner and outer magnetic rotors when the pump body is working.

The utility model provides the following technical solutions:

A magnetic-driven high-temperature resistant pump includes a pump body, an impeller assembly, and a magnetic drive assembly that drives the impeller assembly to work. The high-temperature resistant pump also includes a cooling device for reducing the temperature of the magnetic drive assembly.

Preferably, the magnetic drive assembly includes an outer magnetic rotor and an inner magnetic rotor that is magnetically coupled and driven with the outer magnetic rotor, the outer magnetic rotor is driven to rotate by a motor, and the inner magnetic rotor is arranged inside the impeller assembly .

Preferably, the cooling device is an axial fan arranged on the outer magnetic rotor.

Preferably, the impeller assembly includes an impeller, an impeller hub and an impeller shaft, the impeller, the impeller hub and the inner magnetic rotor are integrated, and the integrated part rotates around the impeller shaft through a sliding bearing, and the inner magnetic rotor is arranged on the impeller hub Internally, the high temperature resistant pump also includes a front shaft support, a rear shaft support, a wear-resistant buckle and a spacer sleeve. The end of the impeller shaft close to the impeller is connected with the wear-resistant mouth ring through the front shaft support. The other end of the axle is connected with the spacer sleeve through the rear axle support.

Preferably, the impeller is provided with an elastic mouth ring on the side close to the pump inlet, and the elastic mouth ring cooperates with the wear-resistant mouth ring to form a pair of friction pairs to reduce the backflow of the fluid medium from the impeller front cover to the impeller inlet The volume loss generated during the process and the axial force of the balanced high temperature resistant pump.

Preferably, the high temperature resistant pump also includes a bracket, a pump cover and a gland, the pump cover and the bracket are connected to the pump body through bolts, the pump cover presses the gland tightly, and the spacer sleeve and the pump body Connected through the gland, so as to isolate the high-temperature medium from the outer magnetic rotor and the motor.

Preferably, the wear-resistant mouth ring is made of silicon carbide, and the elastic mouth ring is made of fluororubber.

Preferably, the outer magnetic rotor is integrated with the axial fan.

Preferably, the outer magnetic rotor is provided with a radial bolt hole 1, and the axial flow fan is correspondingly provided with a bolt hole 2, and the radial screw passes through the bolt hole 1 and the bolt hole 2 to connect the axial flow fan with the outer magnetic The rotor is fixed.

Preferably, the pump cover is provided with a through hole, and the through hole, the gap between the outer magnetic rotor and the spacer sleeve together constitute an air duct that cooperates with the axial flow fan.

The beneficial effects of the utility model are:

1. The high-temperature-resistant pump of the present invention is equipped with a cooling device, which can effectively reduce the temperature of the inner and outer magnetic rotors when the pump body is working, and avoid the failure of the inner and outer magnetic rotors when the temperature of the liquid delivered by the inner and outer magnetic rotors is too high. Magnetic, resulting in a decrease in the efficiency of the motor drive, the efficiency of the pump is also reduced.

2. In the drive mode of the high temperature resistant pump of the present invention, the motor first drives the outer magnetic rotor to rotate through the shaft, the impeller of the high temperature resistant pump is integrated with the inner magnetic rotor, and the outer magnetic rotor drives the inner magnet coupled with it to rotate, thereby realizing the rotation of the impeller. During this process, the impeller shafts fixed on the front and rear shaft supports do not rotate, and the impeller shafts are fixed with the spacer sleeve and the wear-resistant ring, which only play the role of supporting the impeller, so the uneven progress caused by the rotation of the impeller shaft can be avoided. The disturbance of the flow to the pump velocity field can improve the hydraulic performance of the high temperature resistant pump, and can reduce the power loss caused by the friction of the impeller shaft and the sliding bearing to improve the efficiency, and can reduce the vibration and noise to improve the operation stability.

3. The axial flow fan cooling replaces the traditional external forced water circulation cooling, which has a simple structure and convenient operation, and has a better cooling effect on the inner and outer magnetic rotors, greatly improving the transmission efficiency of the motor.

4. The elastic mouth ring and the wear-resistant mouth ring cooperate with each other to form a pair of friction pairs, which reduces the gap between the high pressure area and the low pressure area of the impeller, which can not only prolong the service life of the mouth ring when balancing the axial force of the high temperature resistant pump, but also It can reduce the volume loss of the return flow of the front cover plate of the impeller and improve the efficiency of the pump.

Description of drawings

Figure 1 is a schematic structural diagram of a magnetically driven high temperature resistant pump;

Fig. 2 is a schematic diagram of the structure of the pump body;

Fig. 3 is a sectional view of the outer magnetic rotor and the cooling device;

Fig. 4 is the side view of outer magnetic rotor and cooling device;

Fig. 5 is a mutual cooperation diagram of the wear-resistant buckle and the elastic mouth ring;

Fig. 6 is a sectional view of the pump cover;

Figure 7 is a front view of the pump cover;

Fig. 8 is a sectional view of the bracket.

The meanings of the marks in the accompanying drawings are as follows:

10-Pump body 11-Front shaft support 12-Rear shaft support 13-Wear-resistant buckle 14 Isolation sleeve 141-Isolation sleeve reinforcement sleeve 15-Pump inlet 16-Elastic mouth ring 17-Bracket 171-Open hole 18- Pump cover 181-through hole 19-gland 21-impeller 22-impeller hub 23-impeller shaft 31-inner magnetic rotor 32-outer magnetic rotor 321-bolt hole one 40-cooling device 41-bolt hole two 50-motor 60- Plain bearing

Detailed ways

Below in conjunction with specific embodiment the utility model is described in detail.

A magnetically driven high temperature resistant pump includes a pump body 10, an impeller assembly and a magnetic drive assembly for driving the impeller assembly to work. The high temperature resistant pump also includes a cooling device 40 for reducing the temperature of the magnetic drive assembly. The high temperature resistant pump of this embodiment is provided with a cooling device 40, which can effectively reduce the temperature of the inner and outer magnetic rotors 31, 32 when the pump body 10 is working, and avoid the temperature of the inner and outer magnetic rotors 31, 32 when the temperature of the conveying liquid is too high. When it is high, due to the loss of magnetism, the transmission efficiency of the motor will decrease, and the efficiency of the pump will also decrease.

To further optimize the above embodiment, the cooling device 40 is an axial fan arranged on the outer magnetic rotor 32 . The axial flow fan can suck the cold air from the opening 171 on the bracket 17, pass through the gap between the outer magnetic rotor 32 and the spacer sleeve reinforcement sleeve 141, and finally discharge it from the through hole 181 on the side of the pump cover 18. The axial flow Type fan cooling instead of traditional external forced water circulation cooling, simple structure, convenient operation, and better cooling effect on the inner and outer magnetic rotors 31, 32, so that the transmission efficiency of the motor 50 is greatly improved.

To further optimize the above embodiment, the magnetic drive assembly includes an outer magnetic rotor 32 and an inner magnetic rotor 31 that is magnetically coupled and driven with the outer magnetic rotor 32. The outer magnetic rotor 32 is driven to rotate by the motor 50, and the inner magnetic rotor 31 is arranged on the impeller assembly. internal. The impeller assembly includes an impeller 21, an impeller hub 22 and an impeller shaft 23, the impeller 21, the impeller hub 22 and the inner magnetic rotor 31 are integrated, and the integral part rotates around the impeller shaft 23 through a sliding bearing 60, and the inner magnetic rotor 31 is arranged on the impeller hub Inside 22, the high temperature resistant pump also includes a front shaft support 11, a rear shaft support 12, a wear-resistant retaining ring 13 and a spacer sleeve 14, and the end of the impeller shaft 23 close to the impeller 21 passes through the front shaft support 11 and the wear-resistant mouth ring 13 The other end of the impeller shaft 23 is connected to the spacer sleeve 14 through the rear axle support 12 . In the driving mode of the high temperature resistant pump in this embodiment, the motor 50 first drives the outer magnetic rotor 32 to rotate through the shaft, the impeller 21 of the high temperature resistant pump is integrated with the inner magnetic rotor 31, and the outer magnetic rotor 32 drives the inner magnetic rotor 31 coupled with it to rotate, thereby The rotation of the impeller 21 is realized. During this process, the fixed impeller shaft 23 on the front and rear shaft supports 11, 12 does not rotate, and the impeller shaft 23 is fixed with the spacer sleeve 14 and the wear-resistant mouth ring 13, and only plays the role of supporting the impeller 21, so it can avoid The disturbance of the pump velocity field caused by the uneven inflow caused by the rotation of the impeller shaft 23 improves the hydraulic performance of the high-temperature resistant pump, and can reduce the power loss caused by the friction between the impeller shaft 23 and the sliding bearing 60 to improve efficiency, and at the same time reduce Vibration and noise increase operational stability.

To further optimize the above embodiment, the impeller 21 is provided with an elastic mouth ring 16 near the pump inlet 15, and the elastic mouth ring 16 cooperates with the wear-resistant mouth ring 13 to form a pair of friction pairs, which reduces the friction between the high pressure area of the impeller 21 and the low pressure area. The gap between the zones can not only prolong the service life of the mouth ring when balancing the axial force of the high-temperature resistant pump, but also reduce the volume loss of the backflow of the front cover plate of the impeller 21 and improve the efficiency of the pump.

To further optimize the above embodiment, the high temperature resistant pump also includes a bracket 17, a pump cover 18, and a gland 19. The pump cover 18 and the bracket 17 are connected to the pump body 10 through bolts, and the pump cover 18 compresses the gland 19 tightly. The isolation sleeve 14 is connected with the pump body 10 through the gland 18, thereby isolating the high temperature medium from the outer magnetic rotor 32 and the motor 50.

To further optimize the above embodiment, the wear-resistant mouth ring 13 is made of silicon carbide, and the elastic mouth ring 16 is made of fluororubber.

To further optimize the above embodiment, the outer magnetic rotor 32 is integrated with the axial flow fan.

To further optimize the above-mentioned embodiment, the outer magnetic rotor 32 is provided with a radial bolt hole 1 321, and the axial flow fan is correspondingly provided with a bolt hole 2 41, and the radial screw passes through the bolt hole 1 and the bolt hole 2 to connect the axial flow fan. The fan is fixed with the outer magnetic rotor 31.

To further optimize the above embodiment, the pump cover 18 is provided with a through hole 181, and the through hole 181, the gap between the outer magnetic rotor 32 and the spacer sleeve 14 together form an air duct that cooperates with the axial flow fan

The above description is only a preferred embodiment of the utility model, and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it can still understand the aforementioned The technical solutions described in each embodiment are modified, or some of the technical features are equivalently replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (10)

1. A kind of 1. Magnetic driving formula high-temperature resistant pump, it is characterised in that including the pump housing (10), impeller assembly and the driving impeller sets The Magnetic driving component of part work, the high-temperature resistant pump further include the heat sink for reducing the Magnetic driving component temperature (40)。
2. 2. a kind of Magnetic driving formula high-temperature resistant pump according to claim 1, it is characterised in that the Magnetic driving component includes outer Magnet rotor (32) and the interior magnet rotor (31) that transmission is magnetically coupled with the outer magnet rotor (32), the outer magnet rotor (32) Driven and rotated by motor (50), the interior magnet rotor (31) is arranged on inside the impeller assembly.
3. 3. a kind of Magnetic driving formula high-temperature resistant pump according to claim 2, it is characterised in that the heat sink (40) is to set Put the tube-axial fan on the outer magnet rotor (32).
4. 4. a kind of Magnetic driving formula high-temperature resistant pump according to claim 3, it is characterised in that the impeller assembly includes impeller (21), impeller hub (22) and impeller axle (23), the impeller (21), impeller hub (22) and interior magnet rotor (31) are integrated Part, the integral piece are rotated by sliding bearing (60) around impeller axle (23), and the interior magnet rotor (31) is arranged on impeller hub (22) internal, the high-temperature resistant pump further includes preceding shaft stool (11), rear axle support (12), wear-resisting retaining ring (13) and separation sleeve (14), the impeller axle (23) is connected close to one end of impeller (21) by preceding shaft stool (11) with wear-resisting retaining ring (13), described Impeller axle (23) other end is connected by rear axle support (12) with separation sleeve (14).
5. A kind of 5. Magnetic driving formula high-temperature resistant pump according to claim 4, it is characterised in that the impeller (21) close to pump into Mouth (15) side is equipped with elastic choma (16), and the elasticity choma (16) complements each other to form a pair with the wear-resisting retaining ring (13) Friction is secondary be used to reducing fluid media (medium) in volumetric loss caused by impeller (21) front shroud to impeller (21) circumfluence and Balance the axial force of high-temperature resistant pump.
6. 6. a kind of Magnetic driving formula high-temperature resistant pump according to claim 5, it is characterised in that the high-temperature resistant pump further includes support Frame (17), pump cover (18), gland (19), the pump cover (18), bracket (17) are connected by bolt with the pump housing (10), the pump cover (18) gland (19) is compressed, the separation sleeve (14) is connected with the pump housing (10) by gland (19) so that by high-temperature medium and The outer magnet rotor (32), motor (50) isolation separate.
7. 7. a kind of Magnetic driving formula high-temperature resistant pump according to claim 6, it is characterised in that the wear-resisting retaining ring (13) uses Silicon carbide material, the elasticity choma (16) use fluorubber material.
8. 8. a kind of Magnetic driving formula high-temperature resistant pump according to claim 7, it is characterised in that the outer magnet rotor (32) and axis Flow fan is integrated part.
9. 9. a kind of Magnetic driving formula high-temperature resistant pump according to claim 3, it is characterised in that set on the outer magnet rotor (32) Have the bolt hole one (321) of radial direction, be correspondingly provided with bolt hole two (41) on tube-axial fan, radial screw through bolt hole one, Bolt hole two is fixed by tube-axial fan and outer magnet rotor (32).
10. 10. a kind of Magnetic driving formula high-temperature resistant pump according to claim 6, it is characterised in that the pump cover (18) is equipped with Through hole (181), the gap between the through hole (181), outer magnet rotor (32) and separation sleeve (14) collectively form and the axis stream The matched air passage of formula fan.