CN211550525U

CN211550525U - Air sealing device for head of belt conveyor

Info

Publication number: CN211550525U
Application number: CN201922427104.1U
Authority: CN
Inventors: 倪新跃
Original assignee: Jiangsu Jiangda Machinery Co ltd
Current assignee: Jiangsu Jiangda Machinery Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-09-22
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses a be applied to belt conveyor head portion air seal device in belt conveyor field, its structure is including the fixed plate that sets gradually, the sealed pipe, sealed pad and sealed lid, the coaxial welding of sealed pipe one end terminal surface is in the side of fixed plate, another tip endotheca has sealed the pad, the surface of sealed pad and the internal surface welding position of sealed pipe, the inner ring groove of the sealed lid of orientation is seted up to its inner surface, the one end endotheca of sealed lid in the inner ring groove and with seal pad and the axle piece between carry out the packing of gland packing in the inner ring groove, the fixed plate, the sealed pipe, sealed pad, surround between gland packing and the axle and form gaseous ring chamber, and one side of sealed pipe sets up. The device utilizes gas pressure to block the dust and passes through the joint line between axle piece and the casing, realizes the sealed operation to the joint line, and the supplementary circumference location of axle piece can be realized to the flow of hoop atmospheric pressure simultaneously, has further promoted equipment connection quality to reduced and connected relative frictional force, promoted cooperation drive effect.

Description

Air sealing device for head of belt conveyor

Technical Field

The utility model relates to a belt feeder head air seal device that belt feeder material field of delivery used.

Background

The belt conveyor is an important material conveying workpiece, in particular to large-scale complete equipment. In the application process, the end part of the belt conveyor head shaft needs to be positioned and extends out of the corresponding head shell, so that the end part positioning operation is realized by utilizing the bearing seats positioned on the two sides of the head shell, and one end of the bearing seats is connected with the driving device, so that the stable operation of the rotary driving operation is realized. However, in the operation process, the dust in the equipment overflows from the connecting gap between the head shaft and the equipment shell, and further has adverse effect on the quality of the working environment of the belt conveyor. Meanwhile, overflowed dust can be partially adhered to the connecting gap, the working performance and the service life of the device are affected, adverse effects are brought to the material transportation quality, the dust at the gap can be cleaned only by disassembling the structure, and the cleaning difficulty and the maintenance cost of the equipment are improved.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem provide an effectively promote head axle and equipment casing and be connected belt feeder head air seal device of sealed effect.

The utility model provides a technical scheme that its technical problem adopted is:

the belt conveyor head air sealing device comprises a fixing plate, a sealing pipe, a sealing gasket and a sealing cover which are arranged in sequence, the fixing plate, the sealing pipe, the sealing gasket and the sealing cover are sequentially penetrated to form a mounting through hole for the shaft to pass through, the fixed plate is a plate structure which is connected with the outer side of the head section shell through bolts, the end face of one end of the sealing tube is coaxially welded on the side face of the fixed plate, a sealing gasket is welded in the other end of the sealing tube in an inner sleeve mode, the outer surface of the sealing gasket is welded and positioned with the inner surface of the sealing tube, the inner surface of the sealing cover is provided with an inner ring groove facing the sealing cover, one end of the sealing cover is sleeved in the inner ring groove, the other end of the sealing cover is connected with the end surface of the sealing gasket in a circumferential direction through a bolt, the sealing packing is filled in the inner ring groove among the sealing gasket, the sealing cover and the shaft element, the fixing plate, the sealing pipe, the sealing gasket, the sealing packing and the shaft element surround to form a gas ring cavity, and one side of the sealing pipe is provided with an air inlet for communicating an external air supply device with the air ring cavity.

This sealing device comprises fixed plate, sealed tube, sealed pad, sealing filler and the sealed lid that connects gradually to the coaxial installation through-hole that wears to establish that is used for the tip of axle piece that carries out, the one end of this sealed tube welds in one side of fixed plate, and other end endotheca has sealed pad. One end of the sealing cover is sleeved in the inner annular groove formed in the sealing gasket, and the other end of the sealing cover is connected with the circumferential bolt of the sealing gasket. The sealing filler is filled in a cavity formed by surrounding the inner ring groove, the sealing gasket and the surface of the shaft part, and the sealing filler is extruded by utilizing the distance of the inner sleeve at the end part of the sealing cover, so that the sealing filler can be in sealing connection with the outer surface of the shaft part, and further forms a gas ring cavity by being matched with the sealing pipe, the fixing plate and the outer surface of the shaft part. In the application process, the gas ring cavity is subjected to gas filling operation through the gas inlet arranged on one side of the sealing pipe, and gas continuously introduced enters the head end shell through connecting gaps between the fixing plate and the shaft piece and between the head end shell and the shaft piece under the sealing and blocking effects of sealing filler. At this moment, the inside material of equipment can't get into in the shaft member and head end casing and sealing device's the joint gap under the effect of gas flow direction and atmospheric pressure, has avoided inside impurity to the influence of shaft member rotation operation then, has guaranteed operating quality and sealed effect.

Further, the sealing packing is a polytetrafluoroethylene packing.

Further, the sealing tube is provided with a sealing ring groove for installing a sealing gasket, and an annular limiting blocking surface is formed at the joint of the sealing ring groove and the inner surface of the sealing tube.

Further, the sealing gasket is made of carbon steel.

The utility model has the advantages that:

1. the device utilizes gas pressure to prevent dust from passing through a connecting gap between the shaft part and the shell, realizes sealing operation of the connecting gap, reduces cleaning difficulty of equipment, can realize auxiliary circumferential positioning of the outer surface of the shaft part by means of circumferential air pressure flow, further improves connection quality of the equipment, can also utilize air pressure filling to reduce relative friction force between connecting key gaps, is easier to realize stable driving operation, and improves matching effect;

2. the structural arrangement of the sealing filler ensures the sealing effect by utilizing the characteristics of polytetrafluoroethylene, such as high temperature resistance, low temperature resistance, corrosion resistance, weather resistance, high lubrication, non-adhesion and the like, prolongs the service life of the device, improves the working efficiency and reduces the shutdown maintenance time.

Drawings

Fig. 1 is a perspective view of a connecting structure of a head end housing and a bearing according to the present invention;

FIG. 2 is an enlarged view of the structure of the area A in FIG. 1 (with partial line deletion to ensure the prominence of the technical connection relationship)

FIG. 3 is a partial cross-sectional view taken along A-A of FIG. 1;

FIG. 4 is a right side view of FIG. 1;

labeled as: 1. a head section housing; 11. a bearing seat; 111. a support base; 112. adjusting the screw rod; 113. adjusting the support plate; 114. an auxiliary nut; 2. a shaft member; 3. a fixing plate; 4. a sealing tube; 41. an air inlet; 5. a gasket; 6. sealing and filling; 7. and (7) sealing the cover.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

The structure of the belt conveyor head provided with the sealing device is shown in figures 1 and 4, and partial line deletion is carried out on the prominent structural features in figures 2 and 3. The both ends of the shaft 2 in the head end casing 1 are sequentially penetrated through a casing through hole and a sealing device and are connected and positioned with the bearing seats 11 arranged on the two sides of the head end casing 1, and one end of the shaft 2 is used for being connected with a driving motor, so that the rotary driving is realized.

The sealing device has a structure as shown in fig. 2, which includes a fixing plate 3, a sealing plate 4, a gasket 5, and a sealing cover 7, which are sequentially disposed. The fixing plate 3, the sealing tube 4, the sealing gasket 5 and the sealing cover 7 are sequentially penetrated to form a mounting through hole for the shaft 2 to pass through. The fixing plate 3 can be a metal square plate, and bolt hole positions connected with the head end shell 1 are formed in the circumferential direction. The sealing tube 4 is a cylindrical tube with one end face coaxially welded to the side face of the fixing plate 3, and a sealing gasket 5 made of carbon steel is sleeved and welded at the other end of the sealing tube. In order to ensure the positioning effect of the sealing gasket 5 in the sealing tube 4, the section of the inner surface of the sealing tube 4 is coaxially expanded in inner diameter to form a sealing ring groove, and an annular limiting blocking surface is formed at the joint of the sealing ring groove and the inner surface of the sealing tube 4. The structure of the sealing ring groove is matched with the sealing gasket 5, the consistency of the radial length is guaranteed, then the inner sleeve stops moving under the action of the annular limiting blocking surface, and then the sealing connection integration of the outer surface of the sealing gasket 5 and the inner surface of the sealing pipe 4 is achieved through welding. The sealing tube 4 is now flush with the surface of the sealing gasket 5. The inner surface of the sealing gasket 5 is provided with an inner annular groove facing the sealing cover 7, one end of the sealing cover 7 is sleeved in the inner annular groove, and the sealing filler 6 is filled and arranged in the inner annular groove. This 6 optional polytetrafluoroethylene packing that use of sealing filler, then utilize the cover to locate the tip of the sealed lid 7 of inner ring groove and compress tightly, and then utilize the material characteristic of polytetrafluoroethylene packing to closely laminate in the surface of axle piece 2, and then realize sealed operation. At this time, the other end of the sealing cover 7 can be connected with the sealing cover 7 in a circumferential positioning mode through bolts, and therefore the stability of the sealing effect is guaranteed. A gas ring cavity is formed by surrounding the fixing plate 3, the sealing pipe 4, the sealing gasket 5, the sealing filler 6 and the shaft element 2, and a gas inlet 41 used for communicating an external gas supply device with the gas ring cavity is formed in one side of the sealing pipe 4, so that gas supply operation of the gas ring cavity is realized.

In the application process, one side of the fixing plate 3 is attached to the outer surface of the head section shell 1, and fixed tight connection is realized through bolts, which should ensure the corresponding relation between the installation through holes and the shell through holes. When the bearing seat 11 is a position-adjustable structure formed by matching the supporting base 111, the adjusting screw 112, the adjusting support plate 113 and the auxiliary nut 114 as shown in fig. 3, the through hole of the housing should be a long round hole structure corresponding to the direction of the adjusting screw 112, so as to ensure the reciprocating movement of the shaft 2, and at this time, the fixing plate 3 should drive the sealing device shaft 2 to perform synchronous displacement. In the process, the fixing plate 3 is ensured to always shield the through hole of the shell, and the head sealing effect is guaranteed. The sealing device adjusts and maintains the sealing effect of the sealing filler 6 by adjusting the connection distance between the sealing cover 7 and the sealing gasket 5, so that the gas is prevented from overflowing from the joint of the sealing filler, and the regulation and control effect is ensured. In the application, gaseous from the gas inlet 41 gas ring intracavity that enters into, and then the casing through-hole from the installation through-hole of fixed plate 3 and head end casing 1 flows with the joint gap department of axle piece 2, utilize gas pressure to the inside dust of equipment then, material such as transportation material blows, thereby avoid it to get into and produce the influence to the rotary drive effect of axle piece 2 from its joint gap department, and then the realization is sealed to the air current of its junction, and better inside clean effect has been realized, the life for the device provides the guarantee. In addition, this annular air chamber can carry out the hoop parcel to shaft member 2, and then usable gas pressure realizes that the circumference of shaft member 2 encircles the support, promotes shaft member 2's positional stability, forms the air current intermediate layer at the contact surface simultaneously, has reduced running friction, has guaranteed device drive quality.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. Belt conveyor head air-tight sealing device, its characterized in that, including fixed plate (3), sealed tube (4), sealed pad (5) and the sealed lid (7) that set gradually, fixed plate (3), sealed tube (4), sealed pad (5) and sealed lid (7) wear to establish in proper order and are used for the installation through-hole that axle (2) pass through, fixed plate (3) are the plate structure of bolted connection in the first section casing (1) outside, sealed tube (4) one end terminal surface coaxial welding is in the side of fixed plate (3), and another tip endotheca welding has sealed pad (5), the surface welding position of sealed pad (5) is in the internal surface of sealed tube (4), the internal surface of sealed pad (5) is seted up towards the internal ring groove of sealed lid (7), the one end endotheca of sealed lid (7) is in the internal ring groove, the other end and the terminal surface circumference bolted connection of sealed pad (5, the sealing device is characterized in that sealing filler (6) is filled between the sealing gasket (5), the sealing cover (7) and the shaft element (2) in an inner ring groove, the fixing plate (3), the sealing pipe (4), the sealing gasket (5), the sealing filler (6) and the shaft element (2) are surrounded to form a gas ring cavity, and a gas inlet (41) used for communicating an external gas supply device with the gas ring cavity is formed in one side of the sealing pipe (4).

2. The belt conveyor head air seal of claim 1, characterized in that the sealing packing (6) is a teflon packing.

3. The air-sealing device for the belt conveyor head according to claim 1, wherein the sealing tube (4) is provided with a sealing ring groove for installing the sealing gasket (5), and an annular limit stop surface is formed at the joint of the sealing ring groove and the inner surface of the sealing tube (4).

4. The air seal device for a belt conveyor head according to claim 1, characterized in that the sealing gasket (5) is made of carbon steel.