CN210240098U - Special mechanical seal for lithium battery decomposition liquid raw material pump - Google Patents

Abstract

The utility model discloses a special mechanical seal for a lithium battery decomposition liquid raw material pump, which comprises a shaft sleeve fixedly sleeved on a main shaft, and a movable ring and a stationary ring which are mutually matched for sealing, wherein the movable ring is connected with the shaft sleeve through a movable ring seat; a compensation spring is arranged behind the static ring, and is sleeved on the shaft sleeve and supported by a spring seat; the static ring is connected with the circulating water jacket by a spring seat; the circulating water jacket, the shaft sleeve and the spring seat enclose a flushing water area; the circulating water jacket comprises a cylinder and a baffle ring at the front section; the throttling sleeve is arranged between the moving ring seat and the baffle ring; and a channel which can be opened only towards the direction of the medium area is arranged between the throttling sleeve and the baffle ring. The utility model discloses to the lithium cell decomposition liquid medium design of depositing the crystallization easily, even also can guarantee under the circumstances that sparge water pressure is not enough slightly that the medium can not get into the wash water district at sound ring, the deposit crystallization of sealing washer department, guaranteed sealed validity.

Description

Special mechanical seal for lithium battery decomposition liquid raw material pump

Technical Field

The utility model relates to a mechanical seal for lithium cell decomposition liquid raw materials is carried.

Background

The mechanical seal is a shaft seal device of a rotating machine. Such as centrifugal pumps, centrifuges, reaction kettles, compressors, and the like. Since the drive shaft extends through the inside and outside of the apparatus, there is a circumferential gap between the shaft and the apparatus through which the medium in the apparatus leaks out, and if the pressure in the apparatus is lower than atmospheric pressure, air leaks into the apparatus, so that a shaft seal device must be provided to prevent leakage. The shaft seal has many kinds, and the mechanical seal has the advantages of small leakage amount, long service life and the like, so the mechanical seal is the most important shaft sealing mode in the devices in the world. Mechanical seals, also called face seals, are defined in the relevant national standards as follows: "means for preventing fluid leakage, which is composed of at least one pair of end faces perpendicular to the rotation axis, and which are kept in fit and relatively slide under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism and the cooperation of the auxiliary seal. "

The lithium battery decomposition liquid is a medium which is easy to precipitate and crystallize, and the medium is often deposited and crystallized near a stacked dynamic and static ring in the process of conveying by using a pump, so that the sealing is failed.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a special mechanical seal of lithium cell decomposition liquid raw material pump can effectively avoid sealing medium at the inside deposit crystallization of mechanical seal.

In order to solve the technical problem, the technical scheme of the utility model is to adopt a special mechanical seal for a lithium battery electrolyte raw material pump, which comprises a shaft sleeve fixedly sleeved on a main shaft, a movable ring and a static ring which are matched with each other for sealing, wherein the movable ring is connected with the shaft sleeve through a movable ring seat; a compensation spring is arranged behind the static ring, and is sleeved on the shaft sleeve and supported by a spring seat; the static ring is connected with the circulating water jacket by a spring seat; the circulating water jacket, the shaft sleeve and the spring seat enclose a flushing water area; the dynamic ring, the static ring and the compensating spring are all arranged in the flushing water area; the circulating water jacket comprises a cylinder and a baffle ring at the front section; the throttling sleeve is arranged between the moving ring seat and the baffle ring; and a channel which can be opened only towards the direction of the medium area is arranged between the throttling sleeve and the baffle ring. The principle of the utility model lies in: high-pressure washing water enters the mechanical seal from a washing water inlet of the circulating water jacket and then is dispersed into a washing water area from a washing water dispersion port. Since the pressure of the flushing water is higher than the pressure of the sealing medium, the rubber ring can be squeezed open at the throttling sleeve similar to the one-way valve, and the flushing water flows into the sealing medium area from the gap between the rubber ring and the baffle ring. Even when the flushing water pressure is occasionally slightly insufficient, the flow rate of the sealing medium into the flushing water zone can be restricted due to the one-way fluidity.

As an improvement, one end of the throttling sleeve is a fixed end connected with the movable ring seat, the other end of the throttling sleeve is a movable end contacted with the baffle ring, and the movable end of the throttling sleeve is in a conical sleeve shape with a small front part and a large rear part. So that the pressure from the medium area urges the movable end to be tightly attached to the baffle ring, and the pressure from the flushing water area can only flush the passage between the movable end and the baffle ring.

As a further improvement, the movable ring seat is provided with an installation groove, and the fixed end of the throttling sleeve is embedded in the installation groove.

As a further improvement, the throttle sleeve is made of rubber. The rubber has certain elasticity and is scour-resistant and corrosion-resistant.

As an improvement, a washing water inlet which is communicated with a washing water area is arranged on the circulating water sleeve; a plurality of flushing water dispersion openings which are arranged on the spring seat and are connected with a flushing water inlet and a flushing water area; the flushing water dispersing openings are uniformly distributed along the circumference and used for uniformly distributing water.

The utility model discloses an useful part lies in: the mechanical seal with the structure is designed aiming at the lithium battery decomposition liquid medium which is easy to precipitate and crystallize, and can ensure that the medium cannot enter a washing water area to deposit and crystallize at the positions of the dynamic ring, the static ring and the sealing ring even under the condition that the pressure of washing water is slightly insufficient, so that the effectiveness of sealing is ensured.

Drawings

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

The labels in the figure are: the device comprises a shaft sleeve 1, a circulating water jacket 2, a main shaft 3, a medium zone 4, a flushing water zone 5, a flushing water inlet 6, a flushing water dispersing port 7, a throttling sleeve 8, a movable ring 9, a static ring 10, a movable ring seat 11, a compensating spring 12 and a spring seat 13.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the specific embodiments.

As shown in fig. 1, the present invention comprises a shaft sleeve 1 fixedly sleeved on a main shaft 3, and a movable ring 9 and a stationary ring 10 which are mutually matched for sealing, wherein the movable ring 9 is connected with the shaft sleeve 1 through a movable ring seat 11; a compensation spring 12 is arranged behind the static ring 10, and the compensation spring 12 is sleeved on the shaft sleeve 1 and supported by a spring seat 13; the static ring 10 is connected with the circulating water jacket 3 by a spring seat 24; the circulating water jacket 3, the shaft sleeve 2 and the spring seat 24 enclose a flushing water area 5; the dynamic ring 9, the static ring 20 and the compensating spring 12 are all arranged in the flushing water area 5; a flushing water inlet 6 which reaches the flushing water area 5 is arranged on the circulating water jacket 2; a plurality of flushing water dispersion openings 7 which are arranged on the spring seat 13 and are connected with the flushing water inlet 6 and the flushing water area 5; the flushing water dispersing ports 7 are uniformly distributed along the circumference and used for uniformly distributing water. The circulating water jacket 2 comprises a cylinder and a baffle ring at the front section; the throttle sleeve 8 is arranged between the movable ring seat 11 and the baffle ring; a channel which can only be opened towards the medium area 4 is arranged between the throttling sleeve 8 and the baffle ring.

One end of the throttling sleeve 8 is a fixed end connected with the movable ring seat 11, the other end of the throttling sleeve is a movable end contacted with the baffle ring, and the movable end of the throttling sleeve 8 is in a taper sleeve shape with a small front part and a big back part. An installation groove is formed in the movable ring seat 11, and the fixed end of the throttling sleeve 8 is embedded in the installation groove. The throttle sleeve 8 is preferably made of rubber.

When in use, the movable ring 9 and the static ring 10 are matched and sealed. The medium in the medium area 4 tries to enter the flushing water area 5 under the drive of the pressure, and the pressure generated by the medium only causes the movable end of the throttle sleeve 8 to be increasingly pressed against the stop ring. While the flushing water of the flushing water zone 5 can flush the free end, thereby creating a positive pressure further blocking the intervention of the medium. The flushing water entering the medium zone 4 flows away through the gap between the baffle ring and the shaft sleeve 1.

The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the spirit and scope of the invention, and such modifications and enhancements are intended to be within the scope of the invention.

Claims (5)

1. The utility model provides a special mechanical seal of lithium cell decomposition liquid raw material pump, is used for sealed rotating ring and quiet ring, its characterized in that including fixed cover in the epaxial axle sleeve of main shaft and mutually supporting: the movable ring is connected with the shaft sleeve through a movable ring seat; a compensation spring is arranged behind the static ring, and is sleeved on the shaft sleeve and supported by a spring seat; the static ring is connected with the circulating water jacket by a spring seat; the circulating water jacket, the shaft sleeve and the spring seat enclose a flushing water area; the dynamic ring, the static ring and the compensating spring are all arranged in the flushing water area; the circulating water jacket comprises a cylinder and a baffle ring at the front section; the throttling sleeve is arranged between the moving ring seat and the baffle ring; and a channel which can be opened only towards the direction of the medium area is arranged between the throttling sleeve and the baffle ring.

2. The mechanical seal special for a lithium battery electrolyte raw material pump as claimed in claim 1, wherein: one end of the throttling sleeve is a fixed end connected with the movable ring seat, the other end of the throttling sleeve is a movable end contacted with the baffle ring, and the movable end of the throttling sleeve is in a conical sleeve shape with a small front part and a large rear part.

3. The mechanical seal special for a lithium battery electrolyte raw material pump as claimed in claim 2, wherein: the movable ring seat is provided with an installation groove, and the fixed end of the throttling sleeve is embedded in the installation groove.

4. The mechanical seal special for a lithium battery electrolyte raw material pump as claimed in claim 2, wherein: the throttling sleeve is made of rubber.

5. The mechanical seal special for a lithium battery electrolyte raw material pump as claimed in claim 1, wherein: a washing water inlet communicated with the washing water area is formed in the circulating water sleeve; a plurality of flushing water dispersion openings which are arranged on the spring seat and are connected with a flushing water inlet and a flushing water area; the flushing water dispersion openings are uniformly distributed along the circumference.

Images