CN212432301U

CN212432301U - Double-sealing belt balance

Info

Publication number: CN212432301U
Application number: CN202021648262.6U
Authority: CN
Inventors: 李强红; 贺大勇; 刘平凡; 杨明树
Original assignee: Chengdu Xiangji Automatic Control System Co ltd
Current assignee: Chengdu Xiangji Automatic Control System Co ltd
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2021-01-29
Anticipated expiration: 2030-08-10

Abstract

The utility model relates to bulk material weighing equipment, in particular to a double-seal belt weigher, which comprises a belt weigher body, wherein an inner seal structure and an outer seal structure are arranged on the belt weigher; the utility model discloses double containment belt weigher design scientific and reasonable, sealed effectual, use to maintain simpler, the measurement is most accurate reliable and stable, and can solve prior art's various problems, synthesize the price/performance ratio excellent.

Description

Double-sealing belt balance

Technical Field

The utility model relates to a bulk material weighing equipment specifically is a double containment belt weigher, is particularly suitable for using on quick lime, dust removal ash, powdered ore and other raise dusts of large-scale steel mill, cement plant, chemical plant etc. are big and the belt process that requires height to the environment.

Background

A belt scale refers to an automatic weighing apparatus that continuously weighs bulk materials on a conveyor belt without subdividing the mass or interrupting the movement of the conveyor belt.

Along with social development, more and more attach importance to the environmental protection, the sealed and dustless requirement of production process is also higher and higher, and the mode that present bulk cargo belt developments measurement and batching field adopted for preventing the raise dust has following 2:

firstly, full sealing: the whole metering belt conveyor is completely sealed. The defects are as follows:

1. the raised dust inside the sealing body is large and is seriously accumulated at all parts of the equipment and the sealing bottom plate, 1) the damage to the equipment is large (particularly the raised dust of corrosive materials);

2. the dust is often seriously deposited on the sealing bottom plate, and is more serious when the material is overflowed and leaked (the dust deposited on the sealing bottom plate can reach the lower plane of the annular belt and other parts of equipment at a high height, so that the operation and the precision are seriously influenced);

3. the sealing cover needs to be opened frequently to clean the equipment, so that the maintenance workload is greatly increased;

4. the measured materials generate dust at the discharge port, and the dust is sucked away by dust removal equipment, so that batching and measuring errors are caused;

5. the direct dust absorption in the sealed body, the air suction that dust collecting equipment produced directly acts on the material especially can suck away part even more material on the powdery material (the volume of sucking away the material is related to material particle size, density size, moisture content height, etc.), brings unnecessary burden, reduces dust removal effect for dust collecting equipment, also produces extra external force for metering equipment simultaneously, brings the metering error.

Second, totally enclosed + bottom cleaning device is the mainstream mode in the industry at present, and the specific way is: in order to solve the problem of serious dust accumulation of the sealing bottom plate and increase the height of equipment, an electric cleaning device is additionally arranged on the sealing bottom plate to clean and convey the accumulated dust into a discharge hole. This approach has the following major drawbacks:

1. a large amount of dust (particularly corrosive material dust) in the sealing body is accumulated at each part of the equipment, so that the equipment is damaged, the failure rate of the equipment is greatly increased, and the service life of the equipment is shortened;

2. a large amount of raised dust needs to be treated by dust removal equipment, so that the load and energy consumption of the dust removal equipment are increased, and the dust removal effect is reduced;

3. the process that the overflow, the leakage and the dust at the feeding port are conveyed to a belt by a scraper and the measured dust at the discharging port is sucked by a dust removing device, the 2 conditions are random and irregular, the unpredictable influence is caused on the measurement, and the unexpected error or even the very large error is brought;

4. due to the addition of the electric cleaning device, the required installation space is larger, the investment is larger, the number of fault points is more, and the energy consumption is increased; the overflow, the leakage and the dust at the feeding hole which are not measured are conveyed to the discharging hole by the cleaning device, so that the uncontrollable unexpected error is greatly increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a double containment belt weigher.

The purpose of the utility model is realized through the following ways: a double-seal belt weigher comprises a belt weigher body, wherein an inner seal structure and an outer seal structure are arranged on the belt weigher;

the inner sealing structure comprises an inner sealing cover main body, the inner sealing cover main body is arranged above an annular belt of the belt weigher in a sealing mode, one end of the inner sealing cover main body is connected with the feed hopper, and the other end of the inner sealing cover main body bypasses the annular belt and is connected with the discharge hopper;

the outer sealing structure seals the belt scale body and the inner sealing structure in the belt scale body, the outer sealing structure is formed by covering and installing a plate on the framework, and the inner sealing cover main body and the outer sealing structure share the upper cover plate.

As a further optimization of the scheme, the bottom of the side wall of the inner sealing cover main body is movably provided with an adjustable sealing rubber strip through a connecting bolt and a rubber fixing plate, so that sealing between the inner sealing cover main body and the annular belt is realized.

As a further optimization of the scheme, a transparent observation window is installed on the plate of the side wall of the outer sealing structure.

As a further optimization of the scheme, a dust collecting pipe externally connected with a dust collector is arranged at the top of the outer sealing structure above the discharge hopper.

As a further optimization of the scheme, one end of the outer sealing structure close to the discharge hopper is provided with a double door.

The utility model discloses double containment belt weigher, compared with prior art, has following advantage:

firstly, with the whole transport route of the direct sealed material of interior seal, the produced raise dust of reliable control from the source greatly reduces:

1. the harm of raised dust to the equipment and the dust deposition in the equipment are reduced to the maximum extent;

2. the load of the dust removing equipment is greatly reduced, and the workload and the energy consumption of the dust removing equipment are reduced;

3. the metering error caused by the loss of the dust of the material after passing the metering is greatly eliminated;

4. the internal seal simultaneously plays a role in forcing the materials to operate in a required closed space through mechanical limit, and a series of hazards caused by various conditions such as excessive flash of incoming materials, leakage of belt off-tracking materials and the like are completely solved.

And secondly, adding an outer seal for sealing the whole belt conveyor device outside the inner seal, and connecting dust collection pipes on the outer seal by dust collection devices for dust collection. At the moment, the acting space of the air suction force of the dust removing equipment is the space outside the inner seal and inside the outer seal, and the materials are sealed inside the inner seal.

1. The influence of a small amount of dust leaked from the inner seal on the environment is well solved, and the sealing effect is perfect.

2. The material is sealed within the inner seal, dust collecting equipment air appeal does not directly act on the material, has solved the produced air suction of current mode dust collecting equipment and directly acts on the material especially can absorb some even more material (absorb how much of material and material particle size, density size, moisture content height are relevant) on the powdery material, bring unnecessary burden, reduce dust removal effect for dust collecting equipment, also produce extra external force for metering equipment simultaneously, bring a series of problems such as metering error.

To sum up, the utility model discloses double containment belt weigher design scientific and reasonable, sealed effectual, use to maintain simpler, the measurement is the most accurate reliable and stable, and can solve various problems, comprehensive price/performance ratio that prior art faced excellent.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings:

FIG. 1 is a schematic view of the overall appearance structure of the present invention;

FIG. 2 is a schematic sectional view of the overall structure of the present invention;

fig. 3 is a schematic view of the inner sealing structure of the present invention;

FIG. 4 is a schematic structural view of the outer sealing portion of the present invention;

FIG. 5 is a schematic structural view of a sealing device between the inner seal cover main body and the endless belt of the present invention;

in the figure, a framework 1, a feed hopper 2, a discharge hopper 3, an inner seal cover main body 4, an inner seal cover mounting connecting block 5, an upper cover plate 6, a dust collection pipe 7, a transparent observation window 8, a plate 9, a motor speed reducer 10, a double-door 11, an inner seal structure 12, an annular belt 13, a support frame 14, a rubber fixing plate 15, a connecting bolt 16, an adjustable seal rubber strip 17, a belt scale 18 and an outer seal structure 19.

Detailed Description

As shown in fig. 1-4, the dual-seal belt weigher of the present invention comprises a belt weigher 18 body, wherein the belt weigher 18 is provided with an inner seal structure 12 and an outer seal structure 19;

the inner sealing structure 12 comprises an inner sealing cover body 4, the inner sealing cover body 4 is installed on a supporting frame 14 fixed with an annular belt 13 through an inner sealing cover installation connecting block 5, the inner sealing cover body 4 is installed above the annular belt 13 of the belt scale 18 in a sealing mode, one end of the inner sealing cover body 4 is connected with the feeding hopper 1, and the other end of the inner sealing cover body bypasses the annular belt 13 and then is connected with the discharging hopper 3.

The inner seal structure forms the inner seal of the whole transport route of the direct seal material through the feed hopper of the inner seal, the inner seal cover main body, the discharge hopper and the annular belt below, between the feed hopper of the steel, the inner seal cover, the discharge hopper and the annular belt, the inner seal structure is locked through the adjustable sealing rubber strip, the rubber fixing plate and the connecting bolt after the adjustment sealing rubber strip reaches the optimal position, the optimal sealing effect is achieved, and the raise dust is reduced from the source to the maximum extent.

The outer seal structure 19 seals the belt scale 18 body and the inner seal structure 12 in the outer seal structure 19, the outer seal structure 19 is formed by covering and installing a plate 9 on the framework 1, the inner seal cover main body 4 and the outer seal structure share the upper cover plate 6, the inner seal structure and the outer seal structure are effectively combined, when the belt scale is used, the inner space of the inner seal structure and the outer seal structure can be exposed to the maximum extent only by opening the shared upper cover plate, periodic verification and maintenance of the belt scale are facilitated, meanwhile, manufacturing materials are saved, and cost is reduced. And a transparent observation window 8 is arranged on the plate 9 on the side wall of the outer sealing structure 19, so that the condition inside can be observed conveniently at any time. And a dust collecting pipe 7 externally connected with a dust collector is arranged at the top of the outer sealing structure 19 positioned above the discharge hopper 3. The outer sealing structure 19 is provided with the double doors 11 close to one end of the discharge hopper 3, so that the maintenance, the overhaul and the accident handling are facilitated.

The outer sealing structure is additionally provided with an outer seal for sealing the whole belt conveyor equipment outside the inner seal, so that double seals are formed, and dust collection equipment is connected with a dust collection pipe on the outer seal for dust collection. At the moment, the acting space of the air suction force of the dust removing equipment is a space outside the inner seal and inside the outer seal, and the material is sealed in the sealed space inside the inner seal.

As shown in fig. 5, the bottom of the side wall of the inner seal cover main body 4 is movably mounted with an adjustable seal rubber strip 17 through a connecting bolt 16 and a rubber fixing plate 15, so as to realize the seal between the inner seal cover main body 4 and the annular belt 13.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can be within the technical scope of the present invention without changing or replacing the core principle of the present invention, which is thought of by the creative work and does not depart from the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. The utility model provides a double containment belt weigher, it includes belt weigher (18) body, its characterized in that: an inner sealing structure (12) and an outer sealing structure (19) are arranged on the belt weigher (18);

the inner sealing structure (12) comprises an inner sealing cover main body (4), the inner sealing cover main body (4) is hermetically arranged above an annular belt (13) of a belt scale (18), one end of the inner sealing cover main body (4) is connected with the feed hopper (2), and the other end of the inner sealing cover main body bypasses the annular belt (13) and is connected with the discharge hopper (3);

the belt scale is characterized in that the outer sealing structure (19) seals the belt scale body (18) and the inner sealing structure (12) in the belt scale body, the outer sealing structure (19) is formed by covering and installing a plate (9) on the framework (1), and the inner sealing cover main body (4) and the outer sealing structure share the upper cover plate (6).

2. The dual seal belt scale of claim 1, wherein: the bottom of the side wall of the inner sealing cover main body (4) is movably provided with an adjustable sealing rubber strip (17) through a connecting bolt (16) and a rubber fixing plate (15), so that the inner sealing cover main body (4) is sealed with the annular belt (13).

3. The dual seal belt scale of claim 1, wherein: and a transparent observation window (8) is arranged on the plate (9) on the side wall of the outer sealing structure (19).

4. The dual seal belt scale of claim 1, wherein: and a dust collecting pipe (7) externally connected with a dust collector is arranged at the top of the outer sealing structure (19) above the discharge hopper (3).

5. The dual seal belt scale of claim 1, 3 or 4, wherein: and one end of the outer sealing structure (19) close to the discharge hopper (3) is provided with a double door (11).