CN218818166U

CN218818166U - Novel chemical pump double-end-face mechanical seal

Info

Publication number: CN218818166U
Application number: CN202320132147.0U
Authority: CN
Inventors: 赵志明
Original assignee: TIANJIN LIANQIANG MECHANICAL SEAL TECHNOLOGY CO LTD
Current assignee: TIANJIN LIANQIANG MECHANICAL SEAL TECHNOLOGY CO LTD
Priority date: 2023-01-13
Filing date: 2023-01-13
Publication date: 2023-04-07
Anticipated expiration: 2033-01-13

Abstract

The utility model discloses a novel chemical pump bi-polar face mechanical seal, including the casing, casing internally mounted has mechanical seal structure, and mechanical seal structure includes: main quiet ring, quiet ring O shape circle, drive ring, rotating ring O type circle, axle sleeve, first interior hexagonal concave end holding screw, transmission cover, push ring, prop ring, spring, jump ring, vice rotating ring, vice quiet ring, axle sleeve O type circle, end cover, set screw, locating plate, hexagon head bolt and pump efficiency ring, the utility model relates to a chemical pump bi-polar face mechanical seal technical field, the beneficial effect of present case is: this technical scheme has increased the ring of pump effect and has added endotheca structure, and the excircle processing round helicla flute of ring is imitated to the pump, and the direction of turning of helicla flute is decided according to the direction of turning of pump shaft, and the ring is imitated to the pump passes the drive sleeve through hexagon socket head holding screw and fixes on the axle sleeve, and the ring is imitated to the pump and drive sleeve along with the axle sleeve rotates with the pump shaft is high-speed together, and endotheca one side is fixed between end cover and casing through the stop pin.

Description

Novel chemical pump double-end-face mechanical seal

Technical Field

The utility model relates to a chemical pump double mechanical seal technical field specifically is a novel chemical pump double mechanical seal.

Background

The most inside retaining ring and the snap ring structure that sets up of current chemical pump mechanical seal, the main quiet ring of intensity prevention that leans on snap ring itself completely takes place the skew, the performance is unstable, the liquid that pours into the sealed chamber into from the outside does not pass through effective structural design, in case medium temperature is on the high side in the pump, perhaps pump shaft rotational speed is on the high side, perhaps get into the unsatisfactory etc. of sealed liquid circulation in sealed chamber, these all can cause the sealed liquid temperature that gets into sealed chamber can be higher and higher, can not in time effectual lubricated cooling move, the quiet ring, the service life of machine seal has been reduced.

SUMMERY OF THE UTILITY MODEL

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a novel chemical pump double mechanical seal, includes the casing, casing internally mounted has mechanical seal structure, and mechanical seal structure includes:

the pump comprises a main static ring, a static ring O-shaped ring, a driving ring, a dynamic ring O-shaped ring, a shaft sleeve, a first inner hexagonal concave end set screw, a transmission sleeve, a push ring, a support ring, a spring, a clamp spring, an auxiliary dynamic ring, an auxiliary static ring, a shaft sleeve O-shaped ring, an end cover, a fixing screw, a positioning plate, a hexagonal head bolt and a pump efficiency ring;

the pump shaft penetrates through the inside of the casing, the main stationary ring is arranged on one side inside the casing, the O-shaped ring of the stationary ring is embedded on the upper side of the front end of the main stationary ring, the driving ring is arranged at the rear end of the main stationary ring, the O-shaped ring of the moving ring is embedded on the inner side of the driving ring, the shaft sleeve is arranged inside the casing, the transmission sleeve is arranged on the outer side of the shaft sleeve, a first inner hexagonal concave end set screw is connected with the shaft sleeve, the pushing ring is arranged on the outer side of the shaft sleeve, the supporting ring is arranged at the rear end of the pushing ring, the spring is arranged on the lower side of the shaft sleeve, the auxiliary moving ring is arranged on the outer side of the shaft sleeve, the auxiliary stationary ring is arranged at the rear end of the auxiliary moving ring, the O-shaped ring of the shaft sleeve is arranged on the inner side of the shaft sleeve, the end cover is arranged on the rear side of the casing, the positioning plate is arranged on the rear end of the end cover, the hexagon head bolt penetrates through the positioning plate and is connected with the end cover, and the pump effect ring is arranged on the outer side of the shaft sleeve.

Preferably, the bottom of the shell is provided with a sealing liquid inlet, and the top of the end cover is provided with a sealing liquid outlet.

Preferably, the front end of the housing is embedded with an O-shaped ring.

Preferably, an inner sleeve is arranged inside the shell, cavities are formed in the end cover and the shell, the end cover is communicated with the cavity of the shell, the inner sleeve is arranged inside the cavity of the shell, and a flushing hole is formed in the inner sleeve.

Preferably, the rear side of the end cover is provided with a positioning ring, and a second inner hexagonal concave end set screw is connected to the positioning ring.

Preferably, the junction of the end cover and the shell is provided with an anti-rotation pin.

Advantageous effects

The utility model provides a novel chemical pump double mechanical seal possesses following beneficial effect: the technical scheme is that a pump effect ring and inner sleeve structure is added, a circle of spiral groove is machined on the excircle of a pump effect ring, the rotation direction of the spiral groove is determined according to the rotation direction of a pump shaft, the pump effect ring penetrates through a transmission sleeve through a hexagon socket head set screw to be fixed on the shaft sleeve, the pump effect ring and the transmission sleeve rotate together with the pump shaft at high speed along with the shaft sleeve, one side of the inner sleeve is fixed between an end cover and a shell through an anti-rotation pin, the other side of the inner sleeve is arranged at one end of a main static ring joint surface to prevent the main static ring from being pushed to the direction of a moving ring, a plurality of flushing holes are machined at one end of the inner sleeve, the direction of the flushing holes is opposite to the main static ring joint surface and the static ring joint surface, and the excircle of the inner sleeve and the inner circle of the shell form a small cavity. The inner sleeve plays a role in preventing the main static ring from deviating and has a flow guiding function, the pump effect ring and the inner sleeve are combined, circulation of sealing liquid in the sealing cavity can be effectively promoted, a combination surface of the movable ring and the static ring is effectively cooled and lubricated, and the service life of the mechanical seal is greatly prolonged.

Drawings

Fig. 1 is a schematic view of a novel chemical pump double-end-face mechanical seal's main view structure.

In the figure: 1. the device comprises a shell, 2, a main static ring, 3, a static ring O-shaped ring, 4, a driving ring, 5, a moving ring O-shaped ring, 6, a shaft sleeve, 7, a first inner hexagonal concave end fastening screw, 8, a transmission sleeve, 9, a push ring, 10, a support ring, 11, a spring, 12, a clamp spring, 13, an auxiliary dynamic ring, 14, an auxiliary static ring, 15, a shaft sleeve O-shaped ring, 16, an end cover, 17, a fixing screw, 18, a positioning plate, 19, a hexagonal head bolt, 20, a pump effect ring, 21, an O-shaped ring, 22, an inner sleeve, 23, a positioning ring, 24, a second inner hexagonal concave end fastening screw, 25 and an anti-rotation pin.

Detailed Description

Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1, in which: the utility model provides a novel chemical pump double mechanical seal, includes

casing

1, and 1 internally mounted of casing has mechanical seal structure, and mechanical seal structure includes:

the pump comprises a main static ring 2, a static ring O-shaped ring 3, a driving ring 4, a moving ring O-shaped ring 5, a shaft sleeve 6, a first inner hexagonal concave end set screw 7, a transmission sleeve 8, a push ring 9, a support ring 10, a spring 11, a clamp spring 12, an auxiliary moving ring 13, an auxiliary static ring 14, a shaft sleeve O-shaped ring 15, an end cover 16, a fixing screw 17, a positioning plate 18, a hexagon head bolt 19 and a pump effect ring 20;

a pump shaft penetrates through the interior of the shell 1, a main static ring 2 is arranged on one side of the interior of the shell 1, a static ring O-shaped ring 3 is embedded on the upper side of the front end of the main static ring 2, a driving ring 4 is arranged at the rear end of the main static ring 2, a moving ring O-shaped ring 5 is embedded on the inner side of the driving ring 4, a shaft sleeve 6 is arranged in the shell 1, a transmission sleeve 8 is sleeved on the outer side of the shaft sleeve 6, a first inner hexagonal concave end set screw 7 is connected with the shaft sleeve 6, a push ring 9 is sleeved on the outer side of the shaft sleeve 6, a support ring 10 is arranged at the rear end of the push ring 9, a spring 11 is arranged on the lower side of the shaft sleeve 6, an auxiliary moving ring 13 is sleeved on the outer side of the shaft sleeve 6, a snap spring 12 is sleeved on the outer side of the auxiliary moving ring 13, a shaft sleeve O-shaped ring 15 is arranged on the inner side of the shaft sleeve 6, an end cover 16 is arranged on the rear side of the shell 1, a fastening screw penetrates through the end cover 16 to be connected with the shell 1, a positioning plate 18 is arranged at the rear end of the end cover 16, a hexagon head bolt 19 penetrates through the positioning plate 18 and is connected with the positioning plate 18, and a pump effect ring 20 is arranged on the outer side of the shaft sleeve 6;

the novel mechanical seal is additionally provided with a structure of a pump effect ring 20 and an inner sleeve 22, a circle of spiral groove is processed on the excircle of the pump effect ring 20, the rotation direction of the spiral groove is determined according to the rotation direction of a pump shaft, the pump effect ring 20 penetrates through a transmission sleeve 8 through a hexagon socket end fastening screw to be fixed on the shaft sleeve 6, the pump effect ring 20 and the transmission sleeve 8 rotate with the pump shaft together with the shaft sleeve 6 at high speed, one side of the inner sleeve 22 is fixed between an end cover 16 and a shell 1 through an anti-rotating pin 25, the other side of the inner sleeve 22 is arranged at one end of a joint surface of a main static ring 2 to prevent the main static ring 2 from being pushed to a moving ring, a plurality of flushing holes are processed at one end of the inner sleeve 22 and are opposite to the joint surface of the main static ring and the static ring, a small cavity is formed by the excircle of the inner sleeve 22 and the inner circle of the shell 1, the inner sleeve 22 not only plays a role of preventing the main static ring 2 from deviating, but also has a flow guiding function, the pump effect ring 20 and the inner sleeve 22 are combined, the circulation of sealing liquid in the sealing cavity can be effectively promoted, the moving ring and the static ring can be effectively cooled and lubricated, the sealing liquid can be effectively, the sealing cavity, the sealing liquid can be inlet of the outer sealing liquid and flows out from the sealing cavity, and flows to the arrowhead in the sealing cavity as shown in a sealing liquid sealing graph.

In the specific implementation process, furthermore, the bottom of the shell 1 is provided with a sealing liquid inlet, and the top of the end cover 16 is provided with a sealing liquid outlet, so that circulation of sealing liquid in the sealing cavity can be realized.

In the specific implementation process, an O-shaped ring 21 is further embedded at the front end of the shell 1, so that the strength of the shell 1 is increased.

In the specific implementation process, furthermore, an inner sleeve 22 is arranged inside the shell 1, cavities are formed in the end cover 16 and the shell 1, the end cover 16 is communicated with the cavity of the shell 1, the inner sleeve 22 is arranged inside the cavity of the shell 1, a flushing hole is formed in the inner sleeve 22, a small cavity is formed between the outer circle of the inner sleeve 22 and the inner circle of the shell 1, and the inner sleeve 22 plays a role in preventing the main stationary ring 2 from deviating and also plays a role in guiding flow. The pump efficiency ring 20 and the inner sleeve 22 are combined together, so that circulation of sealing liquid in the sealing cavity can be effectively promoted, the combination surface of the movable ring and the static ring is effectively cooled and lubricated, and the service life of the mechanical seal is greatly prolonged.

In the specific implementation process, furthermore, a positioning ring 23 is arranged on the rear side of the end cover 16, and a second hexagon socket head cap end set screw 24 is connected to the positioning ring 23.

In the specific implementation process, furthermore, an anti-rotation pin 25 is arranged at the joint of the end cover 16 and the shell 1, so that the stability of the connection between the end cover 16 and the shell 1 is improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a novel chemical pump double mechanical seal, includes the casing, and casing internally mounted has mechanical seal structure, and its characterized in that, mechanical seal structure includes:

2. A novel double-end-face mechanical seal for a chemical pump as claimed in claim 1, wherein a sealing liquid inlet is formed in the bottom of the shell, and a sealing liquid outlet is formed in the top of the end cover.

3. The novel chemical pump double-end-face mechanical seal as claimed in claim 1, wherein an O-shaped ring is embedded in the front end of the housing.

4. The novel chemical pump double-end-face mechanical seal as claimed in claim 1, wherein an inner sleeve is arranged inside the housing, the end cap and the housing are both provided with cavities, the end cap is communicated with the housing cavity, the inner sleeve is arranged inside the housing cavity, and the inner sleeve is provided with a flushing hole.

5. The novel chemical pump double-end-face mechanical seal as claimed in claim 1, wherein a positioning ring is arranged on the rear side of the end cover, and a second hexagon socket head cap end set screw is connected to the positioning ring.

6. The novel chemical pump double-end-face mechanical seal as claimed in claim 1, wherein an anti-rotation pin is arranged at the joint of the end cover and the shell.