CN223203271U

CN223203271U - A submersible pipeline pump with a sealing structure

Info

Publication number: CN223203271U
Application number: CN202422363577.0U
Authority: CN
Inventors: 李米夫; 章扬勇; 季占雄; 范史雷; 张岩; 冯银; 赵明宇
Original assignee: Ningxia Caiyunda Electromechanical Pump Co ltd
Current assignee: Ningxia Caiyunda Electromechanical Pump Co ltd
Priority date: 2024-09-27
Filing date: 2024-09-27
Publication date: 2025-08-08
Anticipated expiration: 2034-09-27

Abstract

The utility model relates to the technical field of pipeline pumps, in particular to a submersible pipeline pump with a sealing structure, which comprises a submersible motor and a pump head with a water inlet and a water outlet, wherein the submersible motor comprises a rotor, a stator, a rotor shaft and a waterproof shell, the rotor and the stator are arranged in the waterproof shell, the rotor is coaxially connected with the rotor shaft in the waterproof shell, two ends of the rotor shaft are rotatably arranged in the waterproof shell through bearings, an output end of the rotor shaft penetrates through the waterproof shell, an oil cylinder for sealing the waterproof shell and the pump head is sleeved on the outer side surface of the output end, an oil cylinder cover is arranged between the oil cylinder and the pump head in a sealing manner, the output end penetrates through the oil cylinder cover to be in transmission connection with an impeller arranged in the pump head, a first shaft sealing assembly is arranged between the oil cylinder cover and the waterproof shell, a second shaft sealing assembly is arranged between the oil cylinder cover and the impeller, and the output end of the rotor shaft is sealed in a double way through the arrangement of the first shaft sealing assembly and the second shaft sealing assembly, so that the sealing performance is more stable, and the sealing effect of the pump is improved.

Description

Submersible pipeline pump with sealing structure

Technical Field

The utility model relates to the technical field of pipeline pumps, in particular to a submersible pipeline pump with a sealing structure.

Background

The universal pipeline pump is applied to industrial liquid transportation, urban water supply and drainage, high-rise building pressurization water supply, garden spray irrigation, fire control pressurization, heating and other cold and hot water circulation pressurization and equipment matching, air conditioning unit circulation, cooling water transportation and the like.

The supporting motor of current commonality pipeline pump is standard motor, and the protection level is IP55, consequently can't do the dive and use, and ambient temperature influence is great in the temperature receipts of commonality pipeline pump when using simultaneously, and the commonality pipeline pump has the requirement to the installation condition, needs to build the pump house and is used for installing the commonality pipeline pump for the installation is comparatively troublesome, and the air of intake pipe is to be discharged to the commonality pipeline pump before the start-up simultaneously, only a seal structure between pump head and the motor.

Disclosure of utility model

The utility model aims to provide a submerged pipeline pump with a sealing structure, which solves the problem that a general pipeline pump in the prior art cannot be used in a submerged mode, solves the requirement of the pipeline pump on installation conditions, can potentially float the pipeline pump in water through a floating body, eliminates the heat dissipation of a heat dissipation fan, shields the influence of ambient temperature on the pump, is more beneficial to the heat dissipation of the pump, improves the unit efficiency of the pump, saves more energy of the pump, is more convenient to use and does not need air discharge.

In order to solve the technical problems, the utility model adopts the following technical scheme:

The submersible pipeline pump with the sealing structure comprises a submersible motor and a pump head with a water inlet and a water outlet, wherein the submersible motor comprises a rotor, a stator, a rotor shaft and a waterproof shell, the rotor and the stator are arranged inside the waterproof shell, the rotor shaft is coaxially connected inside the rotor, two ends of the rotor shaft are rotatably arranged inside the waterproof shell through bearings, the output end of the rotor shaft penetrates through the waterproof shell, an oil cylinder used for being in sealing connection with the waterproof shell and the pump head is sleeved on the outer side face of the output end, an oil cylinder cover is arranged between the oil cylinder and the pump head in a sealing mode, the output end penetrates through the oil cylinder cover in a transmission mode and is connected with an impeller arranged in the pump head, a first shaft sealing assembly is arranged between the oil cylinder cover and the waterproof shell, and a second shaft sealing assembly is arranged between the oil cylinder cover and the impeller.

The further technical scheme is that the first shaft sealing assembly comprises two double-sided machine seals and a first supporting spring, the two double-sided machine seals are sleeved on the output end, two opposite sides of the two double-sided machine seals are respectively abutted against the side wall of the waterproof shell and the side wall of the oil cylinder cover, the first supporting spring is sleeved on the outer side of the output end and located between the two double-sided machine seals, the first supporting spring is in a compressed state, and two ends of the first supporting spring are respectively connected with the two double-sided machine seals.

Still further technical scheme is that the oil cylinder cover and the corresponding lateral wall of waterproof housing are all protruding to be equipped with the spacing ring, and the outside setting of output is all enclosed to two spacing rings, and when two double-sided machine seals all cover and locate on the output, two double-sided machine seal outsides all contradict with the inboard of spacing ring.

The second shaft sealing assembly comprises two single-sided machine seals and a second supporting spring, wherein the two single-sided machine seals are sleeved on the output end, two opposite sides of the two single-sided machine seals are respectively abutted against the side wall of the oil cylinder cover and the side wall of the impeller, the second supporting spring is sleeved on the outer side of the output end and is positioned between the two single-sided machine seals, the second supporting spring is in a compressed state, and two ends of the second supporting spring are respectively connected with the two single-sided machine seals.

The further technical scheme is that an annular groove matched with the single-sided mechanical seal is formed in one side, close to the pump head, of the oil cylinder cover, the outer side of the enclosing output end of the annular groove is provided, and when one single-sided mechanical seal close to the oil cylinder cover is arranged on the output end, the single-sided mechanical seal is arranged in the annular groove in a jogged mode.

The further technical proposal is that the waterproof shell and the bottom of the pump head are connected with the same bottom plate.

Compared with the prior art, the utility model has the beneficial effects that:

1. Through setting up first shaft seal assembly and second shaft seal assembly and all playing sealed effect, carry out the double-pass to the output of rotor shaft and seal for sealing performance is more stable, improves its sealed effect.

2. The sealing performance of the pipeline pump is guaranteed, the pipeline pump can be directly used under the water or suspended in the water, and as the pipeline pump is used by being submerged, a pump room for installing the pipeline pump is not needed to be additionally built, portability is improved, meanwhile, the pipeline pump is used by being submerged, a cooling fan of the general pipeline pump is removed, the heat conduction performance is adopted, the heat generated by the internal components of the waterproof shell is conducted to the external side of the waterproof shell in a heat conduction mode, the heat on the external side of the waterproof shell is absorbed by water flow outside the waterproof shell, and the heat generated by a submersible motor during operation of the pipeline pump can be timely absorbed to cool the pipeline pump, so that heat dissipation is more facilitated.

3. The cooling fan of general pipeline pump has been got rid of to the submersible motor, and this pipeline pump just does not have cooling fan when using and consumes mechanical energy for unit efficiency promotes, reduces the energy consumption when using, and is more energy-conserving when using, adopts the water-cooling radiating effect better simultaneously.

Drawings

FIG. 1 is a schematic view of a submersible pipeline pump with a seal structure according to the present utility model.

Fig. 2 is a cross-sectional view of a submersible pipeline pump with a seal structure according to the present utility model.

Fig. 3 is an enlarged view of fig. 2a in accordance with the present utility model.

The icon comprises a 1-waterproof shell, a 2-pump head, a 21-water inlet, a 22-water outlet, a 3-rotor, a 4-stator, a 5-rotor shaft, a 6-bearing, a 7-output end, an 8-oil cylinder, a 9-oil cylinder cover, a 10-impeller, a 11-double-sided mechanical seal, a 12-first supporting spring, a 13-limiting ring, a 14-single-sided mechanical seal, a 15-second supporting spring, a 16-annular groove, a 17-bottom plate and a 18-cable.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Examples:

Referring to fig. 1 and 2, the submersible pipeline pump with the sealing structure of the utility model comprises a submersible motor and a pump head 2 with a water inlet 21 and a water outlet 22, wherein one end of the submersible motor is connected with a cable 18 for supplying power in a sealing way, and the submersible motor comprises a rotor 3, a stator 4, The waterproof motor comprises a rotor shaft 5 and a waterproof shell 1, wherein a rotor 3 and a stator 4 are arranged inside the waterproof shell 1, the rotor 3 is coaxially connected with the rotor shaft 5 inside the rotor 3, two ends of the rotor shaft 5 are rotatably arranged inside the waterproof shell 1 through bearings 6, an output end 7 of the rotor shaft 5 penetrates through the waterproof shell 1, an oil cylinder 8 for sealing and connecting the waterproof shell 1 and a pump head 2 is sleeved on the outer side face of the output end 7, an oil cylinder cover 9 is arranged between the oil cylinder 8 and the pump head 2 in a sealing manner, an impeller 10 arranged in the pump head 2 is connected to the output end 7 in a penetrating manner through the oil cylinder cover 9 in a transmission manner, a first shaft sealing assembly is arranged between the oil cylinder cover 9 and the waterproof shell 1, a second shaft sealing assembly is arranged between the oil cylinder cover 9 and the impeller 10, and in practical use, a submersible motor is arranged in a sealing manner, the first shaft seal assembly and the second shaft seal assembly play a role in sealing, the output end of the rotor shaft is sealed in a double way, so that the sealing performance is stable, the sealing effect is improved, the pipeline pump can be directly immersed into water, and when the pipeline pump is used, the pipeline pump can be immersed into water, and also can be set to float in water through the floating body, so that the pipeline pump is not required to be additionally built, a pump room is not required to be additionally arranged for installing the pipeline pump, and the first shaft seal assembly is arranged between the oil cylinder cover 9 and the waterproof shell 1, so that the oil cylinder cover 9, the water-proof shell 1, The oil cylinder 8 and the waterproof shell 1 form an oil cavity, favorable lubricating oil conditions are provided for a first shaft seal assembly, a second shaft seal assembly is arranged between the oil cylinder cover 9 and the impeller 10, the first shaft seal assembly and the second shaft seal assembly both play a role in sealing, the output end 7 of the rotor shaft 5 is subjected to double-channel sealing, so that the sealing performance is more stable, the sealing effect is improved, the problem that when a general pipeline pump with only one seal assembly in the prior art is used, when the seal assembly is worn, the sealing effect is influenced, the general pipeline pump can leak, the normal use of the general pipeline pump is influenced, and meanwhile, the rotor 3 is powered by a cable 18, The stator 4 and the rotor shaft 5 are matched, the rotor shaft 5 rotates to drive the impeller 10 to rotate through the output end 7 of the rotor shaft 5, so that liquid flows to the water outlet 22 through the water inlet 21, the liquid entering the pump head 2 has certain pressure under the drive of the impeller 10, and the pressurized liquid can be prevented from directly contacting with the first shaft sealing assembly through the gap between the output end 7 of the rotor shaft 5 and the oil cylinder cover 9 by arranging the second shaft sealing assembly, so that the first shaft sealing assembly is prevented from being corroded and damaged, and the oil cylinder cover 9 is prevented from being damaged, The lubricating oil in the lubricating oil cavity formed between the oil cylinder 8 and the waterproof shell 1 leaks due to the fact that the first shaft sealing assembly is damaged, so that the sealing effect of the lubricating oil cavity is further improved; the difference between the submersible motor and the general pipeline pump in the device is that the cooling fan of the general pipeline pump is removed, because the pipeline pump is put into water for use, the heat conduction performance is adopted, the waterproof shell 1 conducts the heat generated by the internal components of the pipeline pump to the outside of the pipeline pump in a heat conduction way, the outside liquid of the waterproof shell 1 absorbs the heat on the outside of the waterproof shell 1, so that the heat generated by the submersible motor is timely absorbed and cooled when the pipeline pump runs, the cooling way is not influenced by the outside environment temperature, only influenced by water temperature, further heat dissipation is facilitated, the temperature of the components in the waterproof shell 1 is maintained in a reasonable range, the whole service life is prolonged, meanwhile, the cooling fan of the general pipeline pump is removed, the pipeline pump does not consume mechanical energy by the cooling fan when in use, the unit efficiency is improved, the energy consumption is reduced when in use, and the pipeline pump is more energy-saving when in use the multi-stage submersible pump and the like solve the problem that the working water level of the submersible sewage pump and the multi-stage submersible pump needs 2 meters, but the working water level of the device only needs 0.5 meter, and the practicability is improved.

Referring to fig. 2 and 3, the first shaft sealing assembly includes two double-sided seals 11 and a first supporting spring 12, the two double-sided seals 11 are all sleeved on the output end 7, two opposite sides of the two double-sided seals 11 are respectively abutted against the side wall of the waterproof housing 1 and the side wall of the oil cylinder cover 9, the first supporting spring 12 is sleeved on the outer side of the output end 7 and is located between the two double-sided seals 11, the first supporting spring 12 is in a compressed state, two ends of the first supporting spring 12 are respectively connected with the two double-sided seals 11, and because the first supporting spring 12 is in a compressed state, the first supporting spring 12 has elasticity, and further has a supporting and limiting effect on the two double-sided seals 11, so that the two double-sided seals 11 are prevented from being displaced along the length direction of the rotor shaft 5 and are not abutted against the side wall of the waterproof housing 1 and the side wall of the oil cylinder cover 9, and gaps are prevented from being formed between the opposite sides of the two double-sided seals 11 and the side wall of the waterproof housing 1 and the side wall of the oil cylinder cover 9, and sealing effects are prevented.

Referring to fig. 2 and 3, a limiting ring 13 is protruding from a corresponding side wall of the oil cylinder cover 9 and the waterproof housing 1, two limiting rings 13 are arranged around the outer side of the output end 7, when two double-sided machine seals 11 are sleeved on the output end 7, the outer sides of the two double-sided machine seals 11 are abutted against the inner sides of the limiting rings 13, and when the double-sided machine seals are used, the double-sided machine seals 11 can be further limited by arranging the limiting rings 13, so that the double-sided machine seals are prevented from being displaced from the mounting end of the rotor shaft 5, and the sealing effect is affected.

Referring to fig. 2 and 3, the second shaft sealing assembly includes two single-sided seals 14 and a second supporting spring 15, the two single-sided seals 14 are all sleeved on the output end 7, two opposite sides of the two single-sided seals 14 respectively collide with the side wall of the oil cylinder cover 9 and the side wall of the impeller 10, the second supporting spring 15 is sleeved on the outer side of the output end 7 and is located between the two single-sided seals 14, the second supporting spring 15 is in a compressed state, two ends of the second supporting spring 15 are respectively connected with the two single-sided seals 14, and when in use, the second supporting spring 15 is in a compressed state, so that elastic force exists on the second supporting spring 15, further, the supporting limiting effect is achieved on the two single-sided seals 14, the two single-sided seals 14 are prevented from being mutually close to each other along the length direction of the rotor shaft 5, one single-sided seal 14 near the oil cylinder cover 9 is guaranteed to collide with the side wall of the oil cylinder cover 9, gaps are avoided from occurring between the single-sided seal 14 and the side wall of the oil cylinder cover 9, and the sealing effect is prevented.

Referring to fig. 2 and 3, an annular groove 16 matched with the single-sided mechanical seal 14 is formed on one side, close to the pump head 2, of the oil cylinder cover 9, an annular groove 16 is arranged on the outer side of the enclosed output end 7, when one single-sided mechanical seal 14 close to the oil cylinder cover 9 is sleeved on the output end 7, the single-sided mechanical seal 14 is arranged in the annular groove 16 in a jogged mode, through the arrangement of the annular groove 16, the single-sided mechanical seal 14 close to the oil cylinder cover 9 can be limited, meanwhile, the contact area between the oil cylinder cover 9 and the single-sided mechanical seal 14 can be increased, and the sealing effect is improved.

Referring to fig. 1, the waterproof housing 1 and the bottom of the pump head 2 are connected to the same bottom plate 17, and the device is conveniently installed at a corresponding position by arranging the bottom plate 17.

Although the utility model has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope and spirit of the principles of this disclosure. More specifically, various variations and modifications may be made to the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, drawings and claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will be apparent to those skilled in the art.

Claims

1. The submersible pipeline pump with the sealing structure comprises a submersible motor and a pump head (2) with a water inlet (21) and a water outlet (22), and is characterized in that the submersible motor comprises a rotor (3), a stator (4), a rotor shaft (5) and a waterproof housing (1), wherein the rotor (3) and the stator (4) are arranged inside the waterproof housing (1), the rotor (3) is coaxially connected with the rotor shaft (5), two ends of the rotor shaft (5) are rotatably arranged inside the waterproof housing (1) through bearings (6), an output end (7) of the rotor shaft (5) penetrates through the inside of the waterproof housing (1), an oil cylinder (8) for sealing and connecting the waterproof housing (1) with the pump head (2) is sleeved on the outer side surface of the output end (7), an oil cylinder cover (9) is arranged between the oil cylinder (8) and the pump head (2) in a sealing mode, the output end (7) penetrates through the oil cylinder cover (9) to be in a transmission mode, the oil cylinder cover (10) is arranged in the pump head (2) in a transmission mode, and an impeller (10) is arranged between the second shaft (1) and the oil cylinder cover (9) in the waterproof housing and the waterproof housing, and the oil cylinder cover (2) are provided with a sealing assembly.

2. The submersible pipeline pump with the sealing structure according to claim 1, wherein the first shaft sealing assembly comprises two double-sided mechanical seals (11) and a first supporting spring (12), the two double-sided mechanical seals (11) are sleeved on the output end (7), two opposite sides of the two double-sided mechanical seals (11) are respectively abutted against the side wall of the waterproof shell (1) and the side wall of the oil cylinder cover (9), the first supporting spring (12) is sleeved on the outer side of the output end (7) and is positioned between the two double-sided mechanical seals (11), and the first supporting spring (12) is in a compressed state, and two ends of the first supporting spring are respectively connected with the two double-sided mechanical seals (11).

3. The submersible pipeline pump with the sealing structure according to claim 2, wherein limiting rings (13) are arranged on corresponding side walls of the oil cylinder cover (9) and the waterproof shell (1) in a protruding mode, the two limiting rings (13) are arranged on the outer sides of the output ends (7) in a surrounding mode, and when the two double-sided mechanical seals (11) are sleeved on the output ends (7), the outer sides of the two double-sided mechanical seals (11) are in contact with the inner sides of the limiting rings (13).

4. The submersible pipeline pump with the sealing structure according to claim 1, wherein the second shaft sealing assembly comprises two single-sided machine seals (14) and a second supporting spring (15), the two single-sided machine seals (14) are sleeved on the output end (7), two opposite sides of the two single-sided machine seals (14) respectively collide with the side wall of the oil cylinder cover (9) and the side wall of the impeller (10), the second supporting spring (15) is sleeved on the outer side of the output end (7) and is positioned between the two single-sided machine seals (14), and the second supporting spring (15) is in a compressed state, and two ends of the second supporting spring are respectively connected with the two single-sided machine seals (14).

5. The submersible pipeline pump with the sealing structure according to claim 4, wherein an annular groove (16) matched with the single-sided mechanical seal (14) is formed in one side, close to the pump head (2), of the oil cylinder cover (9), an annular groove (16) is formed in the outer side, surrounding the output end (7), of the annular groove (16), and when the single-sided mechanical seal (14), close to the oil cylinder cover (9), is sleeved on the output end (7), the single-sided mechanical seal (14) is arranged in the annular groove (16) in a jogged mode.

6. The submersible pipeline pump with the sealing structure according to claim 1 is characterized in that the waterproof shell (1) and the bottom of the pump head (2) are connected with the same bottom plate (17).