TWM541525U - Anti-leakage structure of transmission shaft of pump - Google Patents

Description

Pump drive shaft leakage prevention structure

This creation is about a pump drive shaft anti-leakage structure, especially when it is operated by immersion pump or coolant pump, it can prevent the pressurized liquid from leaking to the external environment or prevent it under the structure without mechanical shaft seal. The liquid water gas flows along the drive shaft to the inside of the motor to cause damage to the motor, and the waterproof structure that can direct the liquid to the water tank is the primary author.

According to the conventional method, the immersion pump or the coolant pump is immersed in water, and the output end of the motor in the pump is transmitted through a pump base to the drive shaft of the impeller, and when the pump is in operation, the motor output shaft end It is impossible to prevent the leakage of high-pressure liquid at the same time when the power is transmitted, which causes the pump water volume and the head to drop, and the high-pressure liquid may also flow back to the inside of the motor to cause motor damage. Therefore, the pump usually uses a mechanical shaft seal. In order to achieve the function of simultaneously transmitting the operating power and preventing leakage, in order to achieve the effect of the shaft seal, a large number of component combinations are provided, so that many costs are added in assembly, disassembly time and maintenance.

As shown in the fourth figure, the motor output shaft (61) of the pump is coupled to the drive shaft (62), and an O-ring (63) is provided on the pump drive shaft (62) and the pump base, and the drive shaft is provided. (62) The upper group is provided with a fixing ring (64) and a rotating ring (65). When the driving shaft (62) drives the rotating ring (65) to work together, the pressure of the compression spring (66) is used to make the fixing ring (64) It can be tightly pressed with the rotating ring (65) to prevent the high-pressure liquid from flowing along the axis to the inside of the motor; however, the lack of such a mechanical shaft seal is that the number of its components is too large, so that the cost of its parts is greatly increased. Moreover, the assembly work is increased, and in addition, the components are more likely to cause problems in the assembly of the components, and the assembly and replacement operations are inconvenient and the maintenance cost is increased.

The reason is that, in view of this, the creators have been researching and improving the existing structure and lack of experience in the relevant design and development of the related industries for many years, and provide a pump drive shaft leakage prevention structure, in order to achieve better and practical. The purpose of value.

The main purpose of this creation is to provide a pump drive shaft anti-leakage structure, especially when the drive shaft of a submersible pump or coolant pump is rotated, it can simultaneously transmit power and prevent leakage and reduce maintenance cost. Target person.

The main purpose and effect of the drive shaft leakage prevention structure of the present pump are achieved by the following specific technical means:

The utility model is mainly provided with a pump base correspondingly arranged at the motor output shaft section, and a set of impeller drive shafts is connected to the output shaft section, wherein a water ring is arranged on the drive shaft, and the water ring is located at the pump In this case, by using the rotation of the drive shaft to drive the centrifugal force of the water ring, the liquid can be pumped to the outer tube of the pump seat and flow to the water tank. Instead of the old pump design, the mechanical shaft seal is needed to prevent the liquid from leaking to the outside. The efficacy of the environment.

A preferred embodiment of the pump drive shaft leakage prevention structure as described above, wherein the pump base is provided with a through hole for the motor output shaft to be embedded, and a base and a discharge adjacent to the base are disposed in the pump base. The nozzle has a space inside the base, and upper and lower holes are respectively arranged at the upper and lower ends of the space, the upper hole is for the motor output shaft to be embedded, and the lower hole is for the transmission shaft to be pierced, and a water ring is arranged on the transmission shaft. Thereby, the centrifugal force of the water ring is driven by the rotation of the transmission shaft, and the liquid can be sucked to the outer tube of the pump seat and flow to the water tank, and the pump seat is provided with a water outlet between the oil package and the upper hole.

A preferred embodiment of the pump drive shaft leakage prevention structure as described above, wherein the pump seat through hole is provided with an oil sealer for preventing water from entering the inside of the motor corresponding to the motor output shaft.

A preferred embodiment of the pump drive shaft leakage prevention structure as described above, wherein the pump base is externally provided with an outer tube capable of receiving the liquid that the water ring is removed by centrifugation.

In order to make the technical content, creative purpose and the effect achieved by this creation more complete and clear, please elaborate below, and please refer to the drawings and drawings:

First, please refer to the first to second figures, which is a schematic overall cross-sectional view of the drive shaft leakage prevention structure of the pump, which is mainly provided with a pump base (2) at the end of the motor (1) output shaft (11). The pump base (2) is provided with a through hole (21) for inserting the motor (1) output shaft (11), and an auxiliary rotating bearing (A) is disposed between the corresponding output shaft (11) of the through hole (21). [This is the basic principle device for shaft rotation, which is not a feature of this creation technique], and is provided with a base (22) and a water outlet (23) adjacent to the base (22) in the pump base (2), and A space (221) is disposed inside the base (22), and upper holes (222) and lower holes (223) are respectively disposed at upper and lower ends of the space (221), and the upper holes (222) are provided through the through holes (21). The motor (1) output shaft (11) is embedded, and the lower hole (223) is provided for the transmission shaft (3), and a water ring (4) is disposed on the transmission shaft (3), the water ring (4) Located in the pedestal (22) space (221) Then forming drain outlet (24) to the pump housing's (22) (2) and the base.

Please refer to the first to third figures. When assembling, the output shaft (11) of the motor (1) and the transmission shaft (3) are first connected together, and then the water ring (4) is placed on the base. In the seat (22) space (221), when the output shaft (11) and the transmission shaft (3) are correspondingly embedded in the pump seat (2) through hole (21) and the base (22) upper hole (222) and lower hole (223) When the water ring (4) is worn together, the water ring (4) is set to be locked on the transmission shaft (3), thus completing the assembly of the water ring (4). Continuing the foregoing, after the assembly of the water ring (4) is completed, the impeller (31) is further assembled at the end of the transmission shaft (3), and an outer tube (5) is further disposed outside the pump base (2). .

When the motor (1) is started, the output shaft (11) drives the transmission shaft (3) to rotate, and the liquid water flow is disturbed and pressurized during the rotation of the impeller (31), and the liquid is mainly discharged from the pump base (2). The nozzle (23) is sent out, and due to the rotation of the transmission shaft (3), the liquid is pressurized and leaked through the gap of the lower hole (223). At this time, the water ring is driven by the rotation of the transmission shaft (3) ( 4) The centrifugal force acts to pull out the liquid from the pedestal (22) space (221) and tap it to the wall of the outer tube (5) to flow out; finally, the trace liquid that has not been scooped out during centrifugation is from the upper hole ( 222) When going up, the pump seat (2) through hole (21) corresponding to the motor (1) output shaft (11) is provided with an oil seal (12) to prevent liquid infiltration, and at the same time, because it can no longer go up窜, and the liquid is discharged through a drain port (24) formed between the pump base (2) and the base (22); through the above structure, the motor (1), the drive shaft (3), etc. can be reached. Effective waterproof effect, It will not cause fluid leaks to the external environment.

However, the above-described embodiments or drawings are not intended to limit the product, the structure, or the use of the present invention. Any changes or modifications of the ordinary skill in the art should be considered as not departing from the scope of the invention.

It can be seen from the above components and implementation description that this creation has the following advantages compared with the existing structure:

1. The pump's drive shaft anti-leakage structure of this creation, through the water ring setting on the drive shaft, allows the liquid to be pulled out through the centrifugal action, does not penetrate into the motor, and achieves an effective waterproof effect.

2. The pump's transmission shaft anti-leakage structure of this creation only uses the assembly water ring to simplify the assembly and maintenance work time, improve the pump service life and reduce the maintenance cost.

In summary, the present embodiment can achieve the expected use efficiency, and the specific structure disclosed therein has not been seen in similar products, nor has it been disclosed before the application, and has fully complied with the provisions of the Patent Law. And the request, the application for a new type of patent in accordance with the law, please forgive the review, and grant the patent, it is really sensible.

This creation:

(1)‧‧‧Motor

(11) ‧ ‧ output shaft

(12)‧‧‧ Oil seal

(2) ‧‧‧ pump base

(21)‧‧‧through holes

(22) ‧ ‧ pedestal

(221) ‧‧‧ Space

(222) ‧‧‧Upper hole

(223) ‧‧‧ lower hole

(23) ‧ ‧ water outlet

(24) ‧‧ ‧ drain

(3) ‧‧‧ drive shaft

(31)‧‧‧ Impeller

(4) ‧‧‧甩水环

(5) ‧ ‧ external management

(A) ‧ ‧ bearings

existing:

(61)‧‧‧Output shaft

(62)‧‧‧Drive shaft

(63)‧‧‧O-ring

(64) ‧‧‧Fixed ring

(65) ‧‧‧Rotating ring

(66)‧‧‧Compressed springs

The first picture: a schematic cross-sectional view of the creation

The second picture: a partial enlarged cross-sectional view of the creation of the water ring

The third picture: schematic diagram of the centrifugal water flow of the present creation

Figure 4: Schematic diagram of the prior art

(1)‧‧‧Motor

(11) ‧ ‧ output shaft

(12)‧‧‧ Oil seal

(2) ‧‧‧ pump base

(21)‧‧‧through holes

(22) ‧ ‧ pedestal

(221) ‧‧‧ Space

(222) ‧‧‧Upper hole

(223) ‧‧‧ lower hole

(23) ‧ ‧ water outlet

(24) ‧‧ ‧ drain

(3) ‧‧‧ drive shaft

(31)‧‧‧ Impeller

(4) ‧‧‧甩水环

(5) ‧ ‧ external management

(A) ‧ ‧ bearings

Claims (3)

The utility model relates to a pump drive shaft leakage preventing structure, which comprises a motor, and a pump base is arranged at the shaft end of the motor, the pump base is provided with a through hole for the motor output shaft to be embedded, and a base is arranged in the pump base And a water outlet adjacent to the base, and a space is arranged inside the base, and upper and lower holes are respectively arranged at upper and lower ends of the space, the upper hole is for inserting a motor output shaft, and the lower hole is for driving the shaft And a water ring is arranged on the drive shaft, the water ring is located in the pedestal space, and a drain is formed between the pump base and the base. The pump drive shaft leakage prevention structure according to claim 1, wherein the pump seat through hole is provided with an oil sealer corresponding to the motor output shaft. The pump drive shaft leakage prevention structure according to claim 1 or 2, wherein the pump base is externally provided with an outer tube capable of receiving the liquid discharged by centrifugation.