CN215334446U

CN215334446U - Shaft end air sealing device

Info

Publication number: CN215334446U
Application number: CN202121299923.3U
Authority: CN
Inventors: 唐金祥; 杨赟; 陈栋杰; 陆蓓; 朱懋华; 陈翔
Original assignee: Jiangsu FAST Machinery Co ltd
Current assignee: Jiangsu FAST Machinery Co ltd
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2021-12-28
Anticipated expiration: 2031-06-10

Abstract

The utility model discloses an air sealing device at an axial end, which comprises a sealing seat, a sealing gland, a packing and a lantern frame, wherein an air inlet is formed in the sealing seat, an annular lantern frame and a plurality of packing are sequentially arranged in the sealing seat from left to right, a circle of outer groove is formed in the outer surface of the lantern frame, a circle of inner groove is formed in the inner surface of the lantern frame, the air inlet of the sealing seat is communicated with the outer groove of the lantern frame, a plurality of air holes for communicating the inner groove with the outer groove are further formed in the lantern frame in the circumferential direction, the sealing gland is positioned on the right side of the packing, and the sealing gland is connected with the sealing seat and used for axially extruding the packing. According to the utility model, the air inlet is additionally arranged on the sealing seat, so that air is introduced into the sealing seat to form air pressure, and the sealing effect is greatly improved by adopting a mode of combining air sealing and packing sealing, thereby solving the problem that material leakage at the shaft end is easy to occur in the conveying process of materials.

Description

Shaft end air sealing device

Technical Field

The utility model relates to an air sealing device at a shaft end, and belongs to the field of feed machinery.

Background

China is a big country for manufacturing feed machinery, and the requirements on the quality and the type of raw materials are gradually increased along with the original higher requirements on the feed production process in China. In the traditional shaft end sealing mode, due to the restriction of fine materials, good material fluidity and self sealing effect; the problem of shaft end material leakage easily appears in the material transportation process.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide a shaft end air-tight sealing device aiming at the defects of the prior art, the shaft end air-tight sealing device is additionally provided with an air inlet on a sealing seat, so that air is introduced into the sealing seat to form air pressure, and the sealing effect is greatly improved by adopting a mode of combining air sealing and packing (packing) sealing, thereby solving the problem that the shaft end leaks materials easily in the conveying process of the materials.

In order to achieve the technical purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides an axle head air seal device, includes seal receptacle, sealing gland, packing and lantern frame, the air inlet has been seted up on the seal receptacle, the inside of seal receptacle is equipped with ring shape lantern frame and a plurality of packing from a left side to the right side in proper order, the surface of lantern frame is equipped with the outer recess of round, and the internal surface is equipped with the round inner groovy, the air inlet of seal receptacle and the outer recess intercommunication of lantern frame, still be provided with a plurality of gas pockets that are used for intercommunication inner groovy and outer recess on the circumferencial direction of lantern frame, sealing gland is located the packing right side, sealing gland is connected with the seal receptacle and is used for axial extrusion packing.

As a further improved technical scheme, the air inlet device further comprises an air pipe joint, and the air pipe joint is connected with the air inlet.

As a further improved technical scheme of the utility model, the lantern frame is made of oil nylon.

As a further improved technical scheme of the utility model, the sealing gland is connected with the sealing seat through a bolt.

As a further improved technical scheme of the utility model, the sealing seat and the sealing gland are both made of carbon steel or stainless steel.

As a further improved technical scheme of the utility model, the sealing seat is fixedly connected with a shell outside the main shaft in a sealing manner through bolts, the inner holes of the lantern frame and the packing are used for inserting the main shaft, and the main shaft is connected with the packing in a rotating and sealing manner.

As a further improved technical scheme of the utility model, the number of the packing sets is 5.

The utility model has the beneficial effects that:

the sealing seat is provided with an air inlet, and the air pipe joint is arranged at the air inlet; the gas enters the outer groove of the lantern frame through the gas inlet hole of the sealing seat and then enters the inner groove through the gas hole of the lantern frame, uniform gas pressure is formed inside and outside the lantern frame, and the gas pressure is larger than the cavity in the equipment, so that the material is prevented from leaking; and a plurality of packing on the right in the seal receptacle, packing are a soft material for the cover is on the main shaft, thereby the gland passes through the bolt and is connected with the seal receptacle and makes gland axial extrusion packing, and the packing receives pressure expansion, keeps off tightly to laminate on the main shaft in the packing, keeps off tightly to laminate the seal receptacle outward, forms the second and seals. The structure adopts a double sealing structure, the first sealing is realized, the second sealing is realized by the packing, the sealing effect is greatly improved, and the shaft end leakage in the conveying process of the material is reduced.

Drawings

Fig. 1 is a front view of the shaft-end air-sealing device of the present invention.

Fig. 2 is a plan view of the shaft-end air-sealing device of the present invention.

Fig. 3 is a side view of the shaft-end air-sealing device of the present invention.

Fig. 4 is a sectional view a-a in fig. 1.

Fig. 5 is a schematic structural view of the lantern of the present invention.

Detailed Description

The following further description of embodiments of the utility model is made with reference to the accompanying drawings:

as shown in fig. 1 to 4, a shaft end air-tight sealing device includes a seal receptacle 1, an air pipe joint 2, a sealing gland 3, a packing 4 and a lantern frame 5, an air inlet has been seted up on the seal receptacle 1, the air pipe joint 2 is connected with the air inlet, the inside of seal receptacle 1 is equipped with ring shape lantern frame 5 and a plurality of packing 4 from a left side to the right side in proper order, as shown in fig. 5, the surface of lantern frame 5 is equipped with round outer groove 9, and the internal surface is equipped with round inner groovy 8, the air inlet of seal receptacle 1 and lantern frame 5's outer groove 9 intercommunication, still be provided with a plurality of gas pockets 10 that are used for communicateing inner groovy 8 and outer groove 9 on the circumferencial direction of lantern frame 5, sealing gland 3 is located the packing 4 right side, sealing gland 3 is connected with seal receptacle 1 and is used for axial extrusion packing 4. As shown in fig. 4, when the gland 3 axially presses the packing 4, the packing 4 axially presses the lantern bracket 5, and the lantern bracket 5 axially presses the inner end surface of the seal holder 1.

In this embodiment, the lantern frame 5 is made of oil nylon.

In this embodiment, the sealing gland 3 is connected to the sealing seat 1 by bolts 7.

In this embodiment, the seal holder 1 and the seal gland 3 are made of carbon steel or stainless steel.

In this embodiment, the seal receptacle 1 is used for being fixedly connected with a casing (the casing is an equipment casing which needs to be rotationally connected with the main shaft 6) outside the main shaft 6 in a sealing manner through a bolt 7, inner holes of the lantern bracket 5 and the packing 4 are used for inserting the main shaft 6, and the main shaft 6 is rotationally and hermetically connected with the packing 4.

In this embodiment, as shown in fig. 4, a gap is formed between the inner wall of the left end of the seal holder 1 and the main shaft 6. There is no gap between the inner wall of the sealing seat 1 and the lantern frame 5. A gap is reserved between the inner wall of the left end of the lantern frame 5 and the main shaft 6, and a gap is not reserved between the inner wall of the right end of the lantern frame 5 and the main shaft 6.

The sealing seat 1 of the embodiment is provided with an air inlet, and the air pipe joint 2 is arranged at the air inlet; the gas enters the outer groove 8 of the lantern frame 5 through the air inlet hole of the sealing seat 1 and then enters the inner groove 9 through the air hole 10 of the lantern frame 5, uniform air pressure is formed inside and outside the lantern frame 5, the air pressure is larger than the inner cavity of the equipment, and materials are prevented from leaking; and a plurality of packing 4 on the right in the seal receptacle 1, packing 4 are a soft material for the cover is on main shaft 6, thereby seal gland 3 is connected with seal receptacle 1 through bolt 7 and makes 3 axial extrusion packing 4 of seal gland, packing 4 receives pressure expansion, keeps off in the packing 4 and tightly laminates above the main shaft 6, keeps off the seal receptacle 1 that tightly laminates outward, forms the second and says sealedly. The structure adopts a double sealing structure, the first sealing is realized, the second sealing is realized by the packing, the sealing effect is greatly improved, and the shaft end leakage in the conveying process of the material is reduced.

The scope of the present invention includes, but is not limited to, the above embodiments, and the present invention is defined by the appended claims, and any alterations, modifications, and improvements that may occur to those skilled in the art are all within the scope of the present invention.

Claims

1. The utility model provides a shaft end air seal device which characterized in that: including seal receptacle (1), gland (3), packing (4) and lantern frame (5), the air inlet has been seted up on seal receptacle (1), the inside of seal receptacle (1) is equipped with circle ring lantern frame (5) and a plurality of packing (4) from a left side to the right side in proper order, the surface of lantern frame (5) is equipped with round outer recess (9), and the internal surface is equipped with round inner groovy (8), the air inlet of seal receptacle (1) and outer recess (9) the intercommunication of lantern frame (5), still be provided with a plurality of gas pockets (10) that are used for intercommunication inner groovy (8) and outer recess (9) on the circumferencial direction of lantern frame (5), gland (3) are located packing (4) right side, gland (3) are connected with seal receptacle (1) and are used for axial extrusion packing (4).

2. The shaft-end air seal device according to claim 1, wherein: still include air pipe connector (2), air pipe connector (2) are connected with the air inlet.

3. The shaft-end air seal device according to claim 1, wherein: the lantern frame (5) is made of oil nylon.

4. The shaft-end air seal device according to claim 1, wherein: the sealing gland (3) is connected with the sealing seat (1) through a bolt (7).

5. The shaft-end air seal device according to claim 1, wherein: the sealing seat (1) and the sealing gland (3) are both made of carbon steel or stainless steel.

6. The shaft-end air seal device according to claim 1, wherein: the sealing seat (1) is used for fixedly connecting with a shell seal outside the main shaft (6) through a bolt (7), inner holes of the lantern frame (5) and the packing (4) are used for inserting the main shaft (6), and the main shaft (6) is connected with the packing (4) in a rotating and sealing mode.

7. The shaft-end air seal device according to claim 1, wherein: the number of the packing sets (4) is 5.