CN217327798U

CN217327798U - Anti-blocking corrosion-resistant efficient waste acid delivery pump

Info

Publication number: CN217327798U
Application number: CN202220803148.9U
Authority: CN
Inventors: 任振林; 韦尚鹏; 陈春生
Original assignee: Honghao Pump Industry Co ltd
Current assignee: Honghao Pump Industry Co ltd
Priority date: 2022-04-08
Filing date: 2022-04-08
Publication date: 2022-08-30
Anticipated expiration: 2032-04-08

Abstract

The utility model belongs to the technical field of the pump is made, a prevent stifled corrosion-resistant high-efficient spent acid delivery pump is disclosed, problem that exists in solving prior art spent acid delivery pump, this delivery pump includes the pump case, the pump shaft is equipped with in the pump case, the one end of pump shaft is equipped with semi-open impeller, and semi-open impeller is close to the entrance point of pump case, one side that the entrance point was kept away from to the pump case is equipped with the pump cover, the lateral part of pump cover is equipped with the intermediate strut, the pump shaft is close to pump cover department and is equipped with outer dress formula mechanical seal, and outer dress formula mechanical seal is located the intermediate strut inboard, the lateral part of intermediate strut is connected with the suspension type bearing box, and the tip of pump shaft is stretched out behind the suspension type bearing box by motor drive. The utility model discloses an outer dress formula mechanical seal that adds water forms the sealed face of cooling lubrication through the cooling water, can take away the frictional heat, and outer dress formula mechanical seal's sealed face exposes in the air simultaneously, during the rotation, because the convection current of air can be favorable to the heat dissipation, has effectively improved sealed life-span.

Description

Anti-blocking corrosion-resistant efficient waste acid delivery pump

Technical Field

The utility model relates to a technical field is made to the pump, concretely relates to prevent stifled corrosion-resistant high-efficient spent acid delivery pump.

Background

In the fields of non-ferrous smelting, chemical industry, medicine and other industries, waste acid which is used for cleaning equipment such as pipelines and storage tanks is required to be conveyed frequently, and the waste acid is complex in components, mixed with various impurities and strong in corrosivity. The general stainless steel pump can not resist corrosion and is easy to damage, and the special stainless steel pump has high price and low cost performance; and non-metal pumps adopt WB2 external mechanical seal for strong corrosion resistance, the mechanical seal has the advantages that all metal parts do not contact with a conveyed medium, the strong corrosion resistance is improved, and the mechanical seal is easy to damage when the pumps lack liquid, so that the service life of the pumps is influenced. In addition, the existing pump for conveying the strong corrosive medium is a closed impeller, and impurities in waste acid easily block the impeller and cannot work, so that the technical problem cannot be solved in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem existing in the prior art waste acid delivery pump, providing a simple structure, strong corrosion resistance, longer prevent stifled corrosion-resistant high-efficient waste acid delivery pump of life.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a prevent stifled corrosion-resistant high-efficient spent acid delivery pump, including the pump case, the pump shaft is equipped with in the pump case, the one end of pump shaft is equipped with semi-open impeller, and semi-open impeller is close to the entrance point of pump case, the pump cover is equipped with to one side that the entrance point was kept away from to the pump case, the middle support is equipped with to the lateral part of pump cover, the pump shaft is close to pump cover department and is equipped with outer dress formula mechanical seal, and outer dress formula mechanical seal is located the middle support inboard, the lateral part of middle support is connected with the suspension type bearing box, and the tip of pump shaft stretches out behind the suspension type bearing box by motor drive.

Further, the external mechanical seal comprises a static ring seat arranged on one side, far away from the semi-open impeller, of the pump cover, an annular groove is formed in the static ring seat, a static ring is arranged in the static ring seat, a cooling water channel is formed in the static ring, the cooling water channel is communicated with the annular groove, the annular groove is communicated with a cooling water connecting pipe, a movable ring is arranged on the side portion of the static ring, the movable ring and the pump shaft integrally rotate, and a spring seat is arranged on one side of the movable ring.

Furthermore, a static ring sealing surface is arranged on one side of the static ring close to the movable ring, a static ring groove is arranged on the static ring sealing surface, and the static ring groove is communicated with the cooling water channel.

Furthermore, a movable ring sealing surface is arranged on one side of the movable ring close to the static ring, a movable ring groove is formed in the movable ring sealing surface, and the position of the movable ring groove corresponds to the position of the static ring groove.

Furthermore, the semi-open impeller is provided with a locking assembly, the locking assembly comprises a split cap arranged on the pump shaft, an anti-rotation nut is arranged on the pump shaft in the split cap, and a locking pad is arranged between the anti-rotation nut and the semi-open impeller.

Furthermore, a shaft sleeve is arranged on the pump shaft at one side of the semi-open impeller, which is far away from the splicing cap, an adjusting nut is arranged at the end part of the shaft sleeve, and the shaft sleeve and the pump shaft are in transmission through a shaft sleeve anti-rotation pin.

Furthermore, a split-cap sealing gasket is arranged between the semi-open impeller and the split cap.

Further, a shaft sleeve sealing gasket is arranged between the semi-open impeller and the shaft sleeve.

Furthermore, a static ring sealing gasket is arranged between the static ring and the pump shell, and a static ring O-shaped sealing ring is arranged between the static ring and the static ring seat.

Compared with the prior art, the utility model, following beneficial effect has:

the utility model discloses an outer dress formula mechanical seal that adds water forms the sealed face of cooling lubrication through the cooling water, can take away the frictional heat, and outer dress formula mechanical seal's sealed face exposes in the air simultaneously, during the rotation, because the convection current of air can be favorable to the heat dissipation, has effectively improved sealed life-span. In addition, the sealing metal piece does not contact with a conveying medium, so that the strong corrosion resistance of the seal is improved. The utility model discloses a structure of semi-open impeller can prevent that debris from plugging up semi-open impeller and arousing the not hard up trouble of semi-open impeller because the reversal, has improved life. Additionally the utility model discloses an impeller does not have the front shroud, and the impeller runner can't be plugged up to debris to can guarantee to carry the medium unobstructed.

The movable ring and the static ring of the utility model form a movable sealing surface, and the sealing surface at the inner side seals the medium of the pump cavity to prevent leakage; the sealing surface on the outer side seals cooling water to prevent the cooling water from leaking outside, and the cooling water enters the static ring seat from the cooling water connecting pipe and enters the sealing surface cooling and lubricating static dynamic ring through a hole on the excircle of the static ring. Then flows out from the cooling water outlet pipe, and takes away the friction heat, thereby prolonging the service life of the seal.

The utility model discloses a rotating ring moment of torsion passes through the transmission of drive pin, has improved transmission capacity, prevents that the bellows from damaging because the moment of torsion is too big to the machine that leads to seals inefficacy, has improved the life that the machine sealed.

The utility model discloses a quiet ring is sealed through two O type circles of quiet ring carrier inner chamber, prevents that the cooling water from leaking, has fixed quiet ring simultaneously, prevents that quiet ring from falling out from quiet ring carrier, has made things convenient for the installation.

The utility model discloses a processing has two semi-circular annular runners in the quiet ring seat inner chamber, makes the unobstructed even cooling water passageway that enters into the quiet ring excircle of cooling water. Meanwhile, the water inlet and the water outlet are separated, so that the friction surface can be cooled more fully.

The utility model discloses a moving ring adopts the bellows form, simple structure, and the installation of being convenient for, regulation sealing force have made things convenient for the maintenance.

Drawings

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

Fig. 2 is a schematic view of the stationary ring seat of the present invention.

Fig. 3 is a schematic view of the stationary ring of the present invention.

Fig. 4 is a schematic view of the movable ring of the present invention.

Fig. 5 is a partially enlarged schematic view of fig. 1.

The reference numerals have the following meanings: 1. a pump housing; 2. splicing caps; 3. an anti-rotation nut; 4. a stopper pad; 5. a split cap sealing gasket; 6. a semi-open impeller; 7. a pump cover; 8. a pump cover sealing gasket; 9. a shaft sleeve sealing gasket; 10. a stationary ring seal gasket; 11. a middle support; 12. a cooling water connection pipe; 13. a stationary ring seat; 14. a stationary ring; 15. a moving ring; 16. a shaft sleeve; 17. a shaft sleeve anti-rotation pin; 18. adjusting the nut; 19. a suspension bearing housing; 20. a coupling; 21. a motor; 22. a pump shaft; 23 static ring O-shaped sealing rings; 24. a base; 25. a semi-circular groove; 26. a cooling water passage; 27. a stationary ring sealing surface; 28. a stationary ring groove; 29. a moving ring sealing surface; 30. a moving ring groove; 31. a drive pin.

Detailed Description

As shown in fig. 1-5, the anti-blocking strong corrosion-resistant long-life waste acid delivery pump comprises a pump shell 1, wherein a pump shaft 22 is arranged in the pump shell 1, a pump cover 7 is arranged on one side of the pump shell 1 through a bolt, a pump cover sealing gasket 8 is arranged at the installation position of the pump cover 7 and the pump shell 1, an intermediate support 11 is arranged on one side of the pump cover 7 through a bolt, an external mechanical seal is arranged at the position, close to the pump cover 7, of the pump shaft 22, the external mechanical seal is located on the inner side of the intermediate support 11, a suspension type bearing box 19 is arranged on one side of the intermediate support 11 through a bolt, and the end part of the pump shaft 22 extends out of the suspension type bearing box 19 and then is driven by a motor 21.

Half open impeller 6 is equipped with to the other end of pump shaft 22, and half open impeller 6 is close to the import department of pump case 1, and locking subassembly is equipped with to one side of half open impeller 6, and locking subassembly is equipped with piece the cap sealed 5 including installing the piece cap 2 on pump shaft 22 between half open impeller 6 and the piece cap 2, pieces and installs on the pump shaft 22 of cap 2 inboard and prevents changeing nut 3, prevents changeing nut 3 and is equipped with locking pad 4 between the half open impeller 6. The other side of the semi-open impeller 6 is provided with a shaft sleeve 16, a shaft sleeve sealing gasket 9 is arranged between one side of the shaft sleeve 16 and the semi-open impeller 6, an adjusting nut 18 is arranged on a pump shaft 22 at the other side of the shaft sleeve 16, and a shaft sleeve anti-rotation pin 17 is arranged between the shaft sleeve 16 and the pump shaft 22.

The external mechanical seal comprises a static ring seat 13 which is arranged on one side, far away from a semi-open impeller 6, of a pump cover 7, a ring groove 25 is formed in the static ring seat 13, a static ring 14 is arranged in the static ring seat 13, a cooling water channel 26 is formed in the static ring 14, the cooling water channel 26 is communicated with the ring groove 25, the ring groove 25 is communicated with a cooling water connecting pipe 12, a movable ring 15 is arranged on the side portion of the static ring 14, the movable ring 15 and a pump shaft 22 integrally rotate, a corrugated pipe is arranged on one side, far away from the static ring, of the movable ring 15, and a spring seat is arranged on the outer side of the movable ring 15 and the corrugated pipe.

A static ring sealing gasket 10 is arranged between a pump cover 7 and a static ring seat 13, two static ring O-shaped sealing rings 23 are arranged in an inner cavity of the static ring seat 13, a cooling water connecting pipe 12 is arranged on the outer side of the static ring seat 13, the cooling water connecting pipe 12 is communicated with a semicircular annular groove 25 on the inner side of the static ring seat 13, the semicircular annular groove 25 corresponds to a cooling water channel 26 of the static ring 14, a static ring groove 28 for storing cooling water is formed in a sealing surface 27 of the static ring 14, a dynamic ring 15 is arranged on a shaft sleeve 16, a dynamic ring groove 30 for storing cooling water is processed in a sealing surface 29 of the dynamic ring 15 and corresponds to the static ring groove 28, and the dynamic ring 15 transmits torque through a transmission pin 31.

The surfaces of the pump shell 1, the pump cover 7, the split caps 2 and the semi-open impeller 6, which are in contact with the medium, are all made of steel lining fluoroplastic layers.

The pump shaft 22 is connected with the motor 21 through the coupling 20, and the motor 21 and the pump shell 1 are both fastened on the base 24.

When the pump works, firstly, a medium enters from an inlet of the pump shell 1, then works through the semi-open impeller 6, is conveyed to an outlet of the pump shell 1, and then reaches an outlet pipeline system.

Claims

1. The utility model provides a prevent stifled corrosion-resistant high-efficient spent acid delivery pump, includes pump case (1), is equipped with pump shaft (22) in pump case (1), characterized by: semi-open impeller (6) are equipped with to the one end of pump shaft (22), and semi-open impeller (6) are close to the entrance point of pump case (1), pump cover (7) are equipped with to one side that entrance point was kept away from in pump case (1), middle support (11) are equipped with to the lateral part of pump cover (7), pump shaft (22) are close to pump cover (7) department and are equipped with outer dress formula mechanical seal, and outer dress formula mechanical seal is located middle support (11) inboardly, the lateral part of middle support (11) is connected with suspension type bearing box (19), and the tip of pump shaft (22) is stretched out behind suspension type bearing box (19) and is driven by motor (21).

2. The anti-blocking corrosion-resistant efficient waste acid delivery pump of claim 1, which is characterized in that: the external mechanical seal comprises a static ring seat (13) which is arranged on one side of a pump cover (7) far away from a semi-open impeller (6), a ring groove (25) is formed in the static ring seat (13), a static ring (14) is arranged in the static ring seat (13), a cooling water channel (26) is formed in the static ring (14), the cooling water channel (26) is communicated with the ring groove (25), the ring groove (25) is communicated with a cooling water connecting pipe (12), a movable ring (15) is arranged on the side portion of the static ring (14), the movable ring (15) integrally rotates with a pump shaft (22), and a spring seat is arranged on one side of the movable ring (15).

3. The anti-blocking corrosion-resistant efficient waste acid delivery pump of claim 2, which is characterized in that: one side of the static ring (14) close to the movable ring (15) is provided with a static ring sealing surface (27), a static ring groove (28) is arranged on the static ring sealing surface (27), and the static ring groove (28) is communicated with the cooling water channel (26).

4. The anti-blocking corrosion-resistant efficient waste acid delivery pump as claimed in claim 3, which is characterized in that: one side of the movable ring (15) close to the stationary ring (14) is provided with a movable ring sealing surface (29), a movable ring groove (30) is formed in the movable ring sealing surface (29), and the position of the movable ring groove (30) corresponds to the position of the stationary ring groove (28).

5. The anti-blocking corrosion-resistant efficient waste acid delivery pump as claimed in claim 1 or 4, which is characterized in that: the semi-open impeller (6) is provided with a locking assembly, the locking assembly comprises a splicing cap (2) arranged on a pump shaft (22), an anti-rotation nut (3) is arranged on the pump shaft (22) in the splicing cap (2), and a locking pad (4) is arranged between the anti-rotation nut (3) and the semi-open impeller (6).

6. The anti-blocking corrosion-resistant efficient waste acid delivery pump of claim 5, which is characterized in that: a shaft sleeve (16) is arranged on a pump shaft (22) on one side, far away from the split cap (2), of the semi-open impeller (6), an adjusting nut (18) is arranged at the end of the shaft sleeve (16), and the shaft sleeve (16) and the pump shaft (22) are driven through a shaft sleeve anti-rotation pin (17).

7. The anti-blocking corrosion-resistant efficient waste acid delivery pump of claim 5, which is characterized in that: a split cap sealing gasket (5) is arranged between the semi-open impeller (6) and the split cap (2).

8. The anti-blocking corrosion-resistant efficient waste acid delivery pump of claim 6, which is characterized in that: a shaft sleeve sealing gasket (9) is arranged between the semi-open impeller (6) and the shaft sleeve (16).

9. The anti-blocking corrosion-resistant efficient waste acid delivery pump of claim 2, which is characterized in that: a static ring sealing gasket (10) is arranged between the static ring (14) and the pump shell (1), and a static ring O-shaped sealing ring (23) is arranged between the static ring (14) and the static ring seat (13).