CN218062679U

CN218062679U - Novel high-efficient cylinder type high-temperature front-mounted pump

Info

Publication number: CN218062679U
Application number: CN202220976439.8U
Authority: CN
Inventors: 郑扬; 郑建华; 乔红雨
Original assignee: Shenyang Tianchuan Industrial Pump Manufacturing Co ltd
Current assignee: Shenyang Tianchuan Industrial Pump Manufacturing Co ltd
Priority date: 2022-04-26
Filing date: 2022-04-26
Publication date: 2022-12-16
Anticipated expiration: 2032-04-26

Abstract

Novel high-efficient cylinder high temperature is leading pump belongs to centrifugal pump technical field, concretely relates to novel high-efficient cylinder high temperature is leading pump. The utility model provides a sealed effectual, easy to maintain, can carry more high-pressure, high-temperature liquid's high-efficient cylinder high temperature front-end pump. The utility model discloses a pump body is provided with the pump shaft in the pump body, and pump body one side sets up the pump cover that has the shaft hole, and the shaft hole of pump cover, its characterized in that are passed to pump shaft one end: the other side of the pump body is provided with a shaft hole matched with the other end of the pump shaft; a first sealing body matched with an opening of the shaft hole is arranged outside the shaft hole, and the first sealing body is connected with the pump body through a cover plate; the pump cover is provided with a second sealing body matched with an opening of the shaft hole in the pump cover, the second sealing body is the same as the first sealing body in structure, and the second sealing body is connected with the pump cover through a cover plate.

Description

Novel high-efficient cylinder type high-temperature front-mounted pump

Technical Field

The utility model belongs to the technical field of the centrifugal pump, concretely relates to novel high-efficient cylinder high temperature front-mounted pump.

Background

In recent years, with the rapid development of various industries of China, the thermal power industry, the petrochemical industry and the environmental protection project tend to be large-sized, and under the situation that the industries pay attention to the safety production, energy conservation, emission reduction, environmental protection and the like, a plurality of pumps are needed by the industries, so that pump products are developed to the direction of high reliability, high efficiency and energy conservation, and quick and convenient maintenance products are provided.

The pump body of traditional cylinder high temperature front pump is shown in fig. 4, and its both sides are symmetrical structure, and both sides all need to set up the pressure-bearing sealed face in high-pressure chamber, have the weeping risk, and the installation is maintained also more loaded down with trivial details, wastes time and energy.

Disclosure of Invention

The utility model discloses be exactly to above-mentioned problem, provide a sealed effectual, easy to maintain, can carry more high-pressure, high temperature liquid's high-efficient cylinder high temperature front-mounted pump.

In order to realize the above object of the utility model, the utility model discloses a following technical scheme, the utility model discloses a pump body is provided with the pump shaft in the pump body, and pump body one side sets up the pump cover that has the shaft hole, and the shaft hole of pump cover, its characterized in that are passed to pump shaft one end: the other side of the pump body is provided with a shaft hole matched with the other end of the pump shaft; a first sealing body matched with an opening of the shaft hole is arranged outside the shaft hole, and the first sealing body is connected with the pump body through a cover plate; the pump cover is provided with a second sealing body matched with an opening of the shaft hole in the pump cover, the second sealing body is the same as the first sealing body in structure, and the second sealing body is connected with the pump cover through a cover plate.

As a preferred scheme of the utility model, the opening of the shaft hole of the pump cover and the opening of the shaft hole of the pump body are both sleeve bodies, and the end part of the first sealing body is matched with the sleeve bodies; a sealing groove is formed in the first sealing body, a mechanical seal is arranged in the sealing groove, and a gland of the mechanical seal is arranged at the opening of the sealing groove.

Furthermore, cooling cavities with cooling water inlets and cooling water outlets are arranged between the cover plate and the pump body and between the cover plate and the pump cover.

As another preferred scheme of the utility model, the apron bottom of first seal and second seal all is provided with the connector, all be provided with on two connectors with pump shaft complex bearing assembly.

Furthermore, each bearing assembly is provided with a cooling water jacket.

As the third preferred proposal of the utility model, a double-suction impeller is arranged on the pump shaft in the pump body.

Furthermore, a free side sealing ring of the double-suction impeller is arranged on one side, positioned on the pump cover, in the pump body, and a driving side sealing ring is arranged on the other side, corresponding to the double-suction impeller, in the pump body; the size of the inner hole of the driving side sealing ring is larger than that of the inner hole of the free side sealing ring.

As the fourth preferred scheme of the utility model, all be provided with the throttle bush between first seal and the second seal middle part and the pump shaft, be provided with 0.55 ~ 0.65 millimeter's clearance between throttle bush and the pump shaft.

The utility model has the advantages that: 1. the utility model discloses the leading pump uses the double entry impeller structure, can further enlarge the use flow of pump to can improve the anti cavitation ability of leading pump, realize the high efficiency of pump.

2. The utility model discloses a not isostructure of double suction impeller both sides seal ring size can also make the directional drive side of surplus axial force that the pump produced, is favorable to the stability of pump bearing operation.

3. The utility model discloses a first seal and second seal are collection dress formula seal structure, can realize the quick maintenance and change, reduce that liquid leaks outward.

4. The utility model discloses set up the unique structure that only non-drive one side has the pump cover on the barrel pump body, the drive side does not have the pump cover, enables the pump flow channel in the pump body more smooth, and it is more even to flow, can improve the efficiency of pump. Compared with the traditional structure, the pressure-bearing sealing surface of the high-pressure cavity of one pump body can be reduced, and the leakage point of high-pressure liquid is reduced. Only the pump rotor part needs to be disassembled at the free end side, and the maintenance efficiency can be improved.

5. The cooling cavities are arranged outside the first sealing body and the second sealing body, so that the temperature in the first sealing body and the second sealing body can be reduced, and the service life of mechanical sealing in the first sealing body and the second sealing body is prolonged; the cooling water jacket is arranged outside the bearing assembly part, so that the service temperature of the bearing assembly part can be reduced, the service life of the bearing assembly part is prolonged, and the reliability of the pump is improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a side view of fig. 1.

Fig. 3 is a schematic structural view of the pump body.

Fig. 4 is a schematic structural view of a conventional pump body.

In the attached drawing, 1 is a bearing assembly, 2 is a pump shaft, 3 is a second sealing body, 4 is a mechanical sealing body, 5 is a cover plate, 6 is an opening, 7 is a pump body, 8 is a shaft hole, 9 is a first sealing body, 10 is a coupler, 11 is a cooling water jacket, 12 is a connecting body, 13 is a throttling bush, 14 is a driving side sealing ring, 15 is an impeller, 16 is a free side sealing ring, 17 is a pump cover, 18 is a cooling cavity, 19 is a cooling water inlet and 20 is a cooling water outlet.

Detailed Description

The utility model discloses a pump body 7 is provided with pump shaft 2 in the pump body 7, and pump body 7 one side sets up the pump cover 17 that has shaft hole 8, and the shaft hole 8 of pump cover 17, its characterized in that are passed to 2 one ends of pump shaft: the other side of the pump body 7 is provided with a shaft hole 8 matched with the other end of the pump shaft 2; a first sealing body 9 matched with the opening 6 of the shaft hole 8 is arranged outside the shaft hole 8, and the first sealing body 9 is connected with the pump body 7 through a cover plate 5; the pump cover 17 is provided with a second sealing body 3 matched with the opening 6 of the shaft hole 8 on the pump cover 17, the second sealing body 3 has the same structure as the first sealing body 9, and the second sealing body 3 is connected with the pump cover 17 through the cover plate 5.

As a preferred scheme of the present invention, the opening 6 of the shaft hole 8 of the pump cover 17 and the opening 6 of the shaft hole 8 of the pump body 7 are both a sleeve body, and the end of the first sealing body 9 is matched with the sleeve body; be the seal groove in the first seal 9, be provided with mechanical seal 4 in the seal groove, seal groove opening 6 department is provided with mechanical seal 4's gland.

Further, cooling chambers 18 having a cooling water inlet and a cooling water outlet are provided between the cover plate 5 and the pump body 7, and between the cover plate 5 and the pump cover 17.

As another preferred embodiment of the present invention, the bottom of the cover plate 5 of the first sealing body 9 and the second sealing body 3 are both provided with a connecting body 12, and the two connecting bodies 12 are both provided with a bearing assembly 1 cooperating with the pump shaft 2.

Further, a cooling water jacket 11 is arranged on each bearing assembly 1.

As a third preferred embodiment of the present invention, a double-suction impeller 15 is provided on the pump shaft 2 in the pump body 7.

Further, a free side sealing ring 16 of the double-suction impeller 15 is arranged on one side of the pump cover 17 in the pump body 7, and a driving side sealing ring 14 is arranged on the other side of the pump body 7 corresponding to the double-suction impeller 15; the size of an inner hole between the driving side sealing ring 14 and the double suction impeller 15 is larger than that between the free side sealing ring 16 and the double suction impeller 15.

The clearance between the drive side seal ring 14 and the free side seal ring 16 and the double suction impeller 15 is set to 0.65 to 0.75mm. The leakage of the liquid in the pump cavity to the suction cavity is reduced, and the liquid in the gap has the functions of lubrication and hydraulic support.

As a fourth preferred embodiment of the present invention, a throttle bushing 13 is disposed between the middle of the first sealing body 9 and the second sealing body 3 and the pump shaft 2, and a gap of 0.55-0.65 mm is disposed between the throttle bushing 13 and the pump shaft 2. The device has the advantages of reducing the liquid flow of the sealing body suction cavity and the sealing cavity, and also has the functions of lubrication and hydraulic support.

The drive end of the pump shaft 2 is provided with a pump coupling 10.

The utility model discloses a parts such as pump shaft 2, double suction impeller 15, pump shaft coupling 10 constitute the rotor, and the rotor is supported by the bearing assembly 1 of the left and right sides, and rotor mid portion double suction impeller 15 cooperates with drive side sealing ring 14, free side sealing ring 16 to and throttle bush 13 cooperatees with pump shaft 2, has liquid lubrication and hydraulic support, ensures pump rotor part operating stability, improves the reliability and the life of the leading pump of cylinder.

It is understood that the above detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, the application of the pump and the name of the pump type, and those skilled in the art should understand that the present invention can still be modified or replaced with other equivalent methods to achieve the same technical effects; as long as the use requirement is satisfied, the utility model is within the protection scope.

Claims

1. Novel high-efficient cylinder high temperature front pump, including the pump body (7), be provided with pump shaft (2) in the pump body (7), pump body (7) one side sets up pump cover (17) that have shaft hole (8), and shaft hole (8) that pump cover (17) were passed to pump shaft (2) one end, its characterized in that: the other side of the pump body (7) is provided with a shaft hole (8) matched with the other end of the pump shaft (2); a first sealing body (9) matched with the opening (6) of the shaft hole (8) is arranged outside the shaft hole (8), and the first sealing body (9) is connected with the pump body (7) through a cover plate (5); the pump cover (17) is provided with a second sealing body (3) matched with an opening (6) of an upper shaft hole (8) of the pump cover (17), the second sealing body (3) is identical to the first sealing body (9) in structure, and the second sealing body (3) is connected with the pump cover (17) through a cover plate (5).

2. The new high efficiency cartridge high temperature pre-pump of claim 1, wherein: the opening (6) of the shaft hole (8) of the pump cover (17) and the opening (6) of the shaft hole (8) of the pump body (7) are both sleeve bodies, and the end part of the first sealing body (9) is matched with the sleeve bodies; a sealing groove is formed in the first sealing body (9), a mechanical seal (4) is arranged in the sealing groove, and a gland of the mechanical seal (4) is arranged at an opening (6) of the sealing groove.

3. The new high efficiency cartridge high temperature pre-pump of claim 2, wherein: and a cooling cavity (18) with a cooling water inlet and a cooling water outlet is arranged between the cover plate (5) and the pump body (7) and between the cover plate (5) and the pump cover (17).

4. The new high efficiency cartridge high temperature pre-pump of claim 1, wherein: the pump is characterized in that connecting bodies (12) are arranged at the bottoms of the cover plates (5) of the first sealing body (9) and the second sealing body (3), and bearing assemblies (1) matched with the pump shaft (2) are arranged on the two connecting bodies (12).

5. The new high efficiency cartridge high temperature pre-pump of claim 4, wherein: and cooling water jackets (11) are arranged on the bearing assemblies (1).

6. The new high efficiency cartridge high temperature pre-pump of claim 1, wherein: and a double-suction impeller (15) is arranged on the pump shaft (2) in the pump body (7).

7. The new high efficiency cartridge high temperature pre-pump of claim 6, wherein: a free side sealing ring (16) of the double-suction impeller (15) is arranged on one side of the pump cover (17) in the pump body (7), and a driving side sealing ring (14) is arranged on the other side of the pump body (7) corresponding to the double-suction impeller (15); the size of an inner hole between the driving side sealing ring (14) and the double-suction impeller (15) is larger than that between the free side sealing ring (16) and the double-suction impeller (15).

8. The new high efficiency cartridge high temperature pre-pump of claim 7, wherein: the clearance between the drive side sealing ring (14) and the free side sealing ring (16) and the double-suction impeller (15) is set to be 0.65-0.75 mm.