JP3240334U - Ventilation Expansion Pipe Device for Coal Storage Eurosilo - Google Patents

Abstract

[Problem] To provide a ventilation telescopic pipe device for a coal storage eurosilo that is highly safe, has high ventilation efficiency, and does not affect the normal operation of the eurosilo. A ventilation telescopic pipe device includes a second fan (17), a top air duct fixing connection (18), an elastic air duct (19), a bottom air duct fixing connection (20), a mounting platform (21), and a ventilation air duct (22). , the telescopic air duct is parallel to the center telescopic blanking tube 6 of the Eurosilo, one end of the top air duct fixing connection port is connected to the second fan, and the other end is communicated with the tip of the telescopic air duct. The bottom end, the bottom air duct fixed connection port and the ventilation air duct are sequentially connected, and the bottom air duct fixed connection port is fixed to the spiral frame A-shaped frame 11 of the Eurosilo. [Selection drawing] Fig. 10

Description

TECHNICAL FIELD The present invention relates to the field of eurosilos, and more particularly to a ventilation telescopic pipe device for coal storage eurosilos.

Euro silo storage is the latest eco-friendly coal storage method in China, but the type of coal applied to euro silo storage overseas is very different from that in China, so there will be a big difference in coal storage. Currently, the coal types used in China have a high moisture content (internal and external moisture is 30% or more in total), and a large amount of volatilized steam and various gases from coal oxidation are mixed to produce acidic substances. The corrosion and rust damage that can form and result from this acidic material adhering to the surfaces of various equipment and metal structures within the silo poses a serious hazard to the service life and structural safety of the equipment.

Also, toxic and noxious gases volatilized from coal deposited in Eurosilos pose a potential fire hazard and pose a personal safety hazard to inspectors and operators entering the silo. harm.

In order to safely store coal by reducing oxidation of coal in silos and avoiding spontaneous combustion, it is common to suppress oxidation of coal by introducing nitrogen gas into coal in silos. However, the inevitable diffusion of nitrogen gas into the non-coal-laden space in the silo reduces the oxygen content of the air above the coal pile in the silo, in this case In addition, the operator must quickly enter the silo to address the problem, which creates a suffocation hazard due to the oxygen concentration being too low.

As shown in FIG. 2, in the euro silo, although two sets of first fans 16 are arranged in the silo cover 15, the actual exhaust effect is insufficient, mainly because the various gases generated and The steam collects primarily in the area near the top of the coal pile in the silo. The first fan 16 attached to the silo cover 15 of the eurosilo mainly exhausts the gas that collects in the area near the fan, while the silo cover 15 of the eurosilo is not a closed vessel, but a joint of many structures of the eurosilo. There are always various gaps between the part, for example the silo cover 15 and the fuselage 1, so that the gas enters the silo, flows to the first fan 16 and is discharged by the first fan 16, and the flow of the gas. always occurs at the point of least resistance, the efficiency of such bottom-to-top gas flow is very low, and as a result, the upward flow velocity of the gas close to the coal pile is very slow, especially in euro silos. When the height of the coal pile is low, that is, the amount of coal stored is small, and the distance between the surface of the coal pile and the first fan 16 of the silo cover 15 is large, the exhaust effect of the first fan 16 is poor. As a result of observation, it takes at least 10 hours or more to completely replace the gas in the silo, which seriously impairs the timeliness of operators entering the silo and carrying out work, and the euro silo coal storage poses a potential danger to the safety of the eurosilo and seriously affects the normal coal storage production of the eurosilo.

As shown in Figure 1, in the Eurosilo, a fully retractable coal stacking and unloading facility is placed inside the Eurosilo to realize the functions of stacking coal into the silo and unloading coal from the silo. This equipment mainly consists of a rotary frame 4, a frame traveling mechanism 5, a central rotating platform 13, a central telescopic blanking tube 6, a spiral frame 8, a stacking and extracting screw machine 9, a spiral frame A A coal transporting frame 3 is installed at the top of the Eurosilo, a belt conveyor is installed in the frame, and the coal is transported by the conveyor to the entrance of the center telescopic blanking tube 6 at the top of the Eurosilo. and then enter the interior of the Eurosilo through the central telescopic blanking tube 6 . The stacking and unloading screw machine 9 extrudes and flattens the coal, stacking it layer by layer, while the rotary pedestal 4 is driven by the pedestal traveling mechanism 5 to make a circular motion on the fixed horizontal plane in the silo, and the spiral frame A-shaped frame 11 is lifted by the spiral frame lift wire rope 7 to the rotary gantry 4, rotated by the rotation of the rotary gantry 4, and the hoisted wire rope raises and lowers the spiral frame A-shaped frame 11 by a winch, thereby lifting the spiral frame A The glyph frame 11 always changes according to the change of the coal pile height, and the central telescopic blanking tube 6 is a concentric connection of a plurality of round tubes with different diameters, and two adjacent round tubes are hung. In this structure, the central telescopic blanking tube 6 as a whole expands section by section according to the increase or decrease of the distance between the two ends. Or it can be contracted, and the telescopic length can meet the distance change between the rotary platform 4 and the spiral frame A-shaped frame 11, thus the material always passes through the central telescopic blanking tube 6 is ensured. As can be seen from the above, the space between the rotary frame 4 and the spiral frame A-shaped frame 11 in the Eurosilo is the space necessary for the operation of the equipment, and the fixed ventilation pipe equipment cannot be arranged in this space. It is clear that current coal storage eurosilos have no ventilation equipment to meet the need for rapid and efficient ventilation, other than a fan at the top of the silo.

The purpose of the present invention is to solve the deficiencies existing in the above prior art, to provide a ventilation expansion and contraction for coal storage euro silo that has high safety, high ventilation efficiency and does not affect the normal operation of the euro silo. To provide a pipe device.

The purpose of the present invention can be achieved by the following technical solutions.

A ventilation telescopic pipe device for a coal storage eurosilo, comprising:
a second fan, a top air duct fixing connection, a telescopic air duct, a bottom air duct fixing connection, a mounting platform, and a ventilation air duct, wherein the telescopic air duct is parallel to the central telescopic blanking tube of the Eurosilo. One end of the top air duct fixing connection port is connected to the second fan and the other end communicates with the tip of the telescopic air duct, and the bottom end of the telescopic air duct, the bottom air duct fixing connection port and the ventilation air duct are connected to each other. The bottom air duct fixing connection is fixed to the spiral frame A-shaped frame of the Eurosilo.

Further, the telescopic air duct includes a plurality of air duct tubes that are coaxially fitted in sequence, and the middle air duct tube has an upper limit stop ring at its upper end, a lower limit stop ring at its lower end, and The air duct tube located at the bottom end is provided with a lower limit stop ring, and the air duct tube located at the bottom end is provided with an upper limit stop ring at the upper end and a lower connection flange at the lower end, and the lower connection flange is Fixedly connected to the bottom air duct fixing connection port, the upper air duct tube is suspended through its lower limit stop ring to the upper limit stop ring of the adjacent lower air duct tube.

Furthermore, an upper limit flange is provided at the upper end of the air duct tube, and the upper limit stop ring is fixed to the upper limit flange by a fixing bolt.

Further, the telescopic air duct further includes a sealing member and a sealing member holding plate, the inner wall of the air duct tube is provided with a step, the sealing member holding plate is positioned at the step, and the bottom of the upper limit stop ring is a seal. An annular groove is provided for placement of the member, the seal member is positioned within the annular groove, and the upper limit stop ring and seal member retainer plate clamp the seal member with a retainer plate bolt.

Moreover, the material of said air duct tube is stainless steel, nylon or polyurethane material.

Further, the top air duct fixing connection port includes a fixed base and a ventilation pipe, one end of which is provided with a fan flange connection port for connecting the second fan, and the other end of which is the upper opening of the telescopic air duct. A telescopic air duct flange connection port is provided for connection, the fixed base is provided on the ventilation pipe, the fixed base is provided with fixed legs, and the fixed base is fixed to the rotary frame of the Eurosilo by the fixed legs.

Further, the bottom air duct fixing connection port includes a connection port air duct, an air duct connection box, a telescopic air duct connection port, a closing plate, a support frame and a mounting platform, wherein the air duct connection box is an telescopic air duct. A connecting port and a connecting port air duct are respectively communicated, a telescopic air duct connecting port flange is provided at an end of the telescopic air duct connecting port, the telescopic air duct communicates with the telescopic air duct connecting port via the telescopic air duct connecting port flange, The connection air duct is provided with an air duct connection flange at its end, the ventilation air duct communicates with the connection air duct through the air duct connection flange, the air duct connection box is fixed to the mounting platform by a support frame, and the installation The platform is fixed to the Eurosilo's spiral frame A-frame.

Furthermore, the number of the connection port air ducts is plural, and the plurality of connection port air ducts are uniformly provided on the side wall of the air duct connection port box.

Further, the connection port for fixing the bottom air duct further includes a blocking plate for blocking the connection port air duct, and the blocking plate is fitted to the air duct connection port flange.

Further, a plurality of air intake and exhaust ports for ventilation are provided at intervals in the ventilation air duct.

Compared with the prior art, the present invention has the following beneficial effects.

(1) In the present invention, the telescopic air duct is parallel to the center telescopic blanking tube of the Eurosilo, one end of the top air duct fixing connection port is connected to the second fan, and the other end is connected to the tip of the telescopic air duct, The bottom end of the telescopic air duct, the connection port for fixing the bottom air duct and the ventilation air duct are connected in sequence, the connection port for fixing the bottom air duct is fixed to the spiral frame A-shaped frame of the Eurosilo, and the telescopic air duct can be freely expanded and contracted. , the second fan is reversible, so that the air in the eurosilo rotary mount can be transported to the spiral frame close to the surface of the coal pile, and the air above the space in the eurosilo and the coal pile It can meet the function of exchanging and transporting the air in the nearby space, which adapts to the characteristics of equipment movement in the Eurosilo, and prevents the normal operation of the equipment and the operation of the Eurosilo mechanism from interfering with each other. Ventilation needs can be met at any time, ventilation efficiency is improved, and the safety of Eurosilo operation and workers is greatly ensured.
(2) In the present invention, the telescopic air duct includes a plurality of air duct tubes that are coaxially fitted in sequence, and the upper limit stop ring of the lower air duct tube contacts the lower limit stop ring of the upper air duct tube. In this way, the sealing member is in direct contact with the upper surface of the lower limit stop ring to achieve a sealing effect and prevent leakage of the gas transported in the pipe.
(3) In the present invention, the material of the air duct tube is stainless steel, nylon or polyurethane material with smooth surface, not easily deformed and corrosion resistant.
(4) In the present invention, the air duct connection box functions as an air exchange hub, the number of connection air ducts is plural, and the plurality of connection air ducts are evenly provided on the side wall of the air duct connection box, thereby: Fixed ventilation air ducts may be provided in the spiral frame or spiral frame central platform at locations where the operator's gait is not affected, if desired, thereby increasing the flexibility of placement of the ventilation air ducts.
(5) In the present invention, the connection port for fixing the bottom air duct further includes a blocking plate for blocking the connection port air duct, and the blocking plate is aligned with the air duct connection port flange to block the unused connection port air duct, leakage can be avoided.
(6) In the present invention, a plurality of ventilation inlets and outlets are provided at intervals in the ventilation air duct, thereby improving the uniformity of gas flow.

1 is a structural schematic diagram of a Eurosilo; FIG. Fig. 3 is a schematic diagram of the first fan arrangement at the top of the Eurosilo; FIG. 4 is a schematic diagram of a connection port for fixing a top air duct; FIG. 4 is a schematic diagram of a connection port for fixing a bottom air duct; 1 is a schematic diagram of a one-section telescoping air duct; FIG. FIG. 2 is a cross-sectional view of a one-section telescoping air duct; FIG. 10 is a cross-sectional view of the junction of two adjacent sections of telescoping air duct; FIG. 2 is a schematic diagram of a bottom-fixed air duct tube; 1 is a schematic diagram of a ventilation expansion pipe device assembly; FIG. 1 is a schematic diagram of the layout of a ventilation expansion pipe device; FIG.

Hereinafter, the present invention will be described in detail with reference to the drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and detailed embodiments and specific operating procedures are described. not to be

Conventionally, when coal with a high moisture content, high volatility, and a tendency to spontaneously ignite is stored in the coal storage euro silo, various toxic and noxious gases emitted from the coal and a large amount of gas evaporated from the coal water vapor also collects in the silo, causing corrosion and destruction of equipment and various metal structural members in the silo after these gases and water vapor are mixed. When adopted, the silo is filled with nitrogen gas, all of which restrict the operator to quickly enter the silo to work, so that the silo can quickly discharge various gases in the silo. possible, which is important for the normal and safe operation of the Eurosilo.

As shown in Fig. 2, the silo cover 15 of the euro silo can only expel the gas in the space at the top of the silo quickly, and when the pile height of coal is low, the effect of expelling the gas in the lower part of the silo is very low. As long as it gets worse and transports these lower gases to the vicinity of the silo top quickly, these gases can be exhausted by a fan in the silo top region, or transporting the gases in the silo top region to the lower space will allow the gas in the lower part of the silo to be The original gas can be quickly raised to the silo top area and easily discharged by the first fan 16, so the gas in the silo needs to flow up and down to quickly replace the gas in the silo. There is

As shown in FIG. 1, due to the special structure of the equipment inside the Eurosilo, when the equipment of the Eurosilo is in operation, the rotary frame 4 and the spiral frame 8 inside the Eurosilo rotate around the central axis of the Eurosilo. , the rotary frame 4 always rotates in one fixed horizontal plane, and the spiral frame 8, the spiral frame central platform 14, and the spiral frame A-shaped frame 11 also rotate in one horizontal plane around the central axis, but the height of this horizontal plane is It is adjustable up and down according to the needs of the driving operation, in this way the distance from the fixed horizontal plane on which the rotary gantry 4 rotates is always changing, i.e. the rotating rotary gantry 4 and the spiral frame 8, and The distance between the two changes as the coal pile height changes, which makes the conventional air supply system unable to meet the distance change requirement.

In this embodiment, a ventilation pipe is provided between the rotary frame 4 and the spiral frame 8 to exchange the gas around the rotary frame 4 at the top of the silo with the gas near the spiral frame 8 at the bottom in the silo, In other words, the ventilation expansion and contraction for the coal storage eurosilo that satisfies the ventilation requirements inside the eurosilo by ensuring that the gas entering the eurosilo is transported from the rotary frame 4 to the spiral frame 8 and vice versa. A pipe system has been proposed.

A ventilating telescopic pipe device for a coal storage Eurosilo, comprising a second fan 17, a top air duct fixing connection port 18, an telescopic air duct 19, a bottom air duct fixing connecting port 20, a mounting platform 21, and a ventilation air duct 22. and
The second fan 17 is an axial fan with the characteristics of explosion-proof and reversible, which can suck the gas in the top space and transport it to the bottom in the silo through the telescopic air duct 19, or rotate the blades in the opposite direction. It can also be rotated to suck the gas at the bottom of the silo and transport it to the space at the top of the silo.

As shown in FIG. 3, the top air duct fixing connection port 18 includes a fixing base 18-1 and a ventilation pipe 18-3, and one end of the ventilation pipe 18-3 has a fan flange connection for connecting the second fan 17. A port 18-5 is provided, and a telescopic air duct flange connection port 18-4 for connecting the upper opening of the telescopic air duct 19 is provided at the other end. A fixed leg 18-2 is provided on the base 18-1, the fixed base 18-1 is fixed to the rotary frame 4 by the fixed leg 18-2, and the top air duct fixing connection port 18 is located at the top of the silo of the entire ventilation expansion pipe device. is the upper fixed end on the rotary cradle 4 in position.

As shown in FIG. 5, the telescopic air duct 19 includes a plurality of air duct tubes 19-1 with successively decreasing diameters, the plurality of air duct tubes 19-1 being concentrically fitted to form adjacent two sections of the air duct tubes 19-1. The telescopic air duct 19 is a ventilation pipe with a variable length between its ends, i.e. the telescopic air duct 19 has a telescopic function. prepared,
The expandable air duct 19 has the same structure as the other air duct tubes 19-1 except for connection ports at both ends for fixed connection. 3, a lower limit stop ring 19-8 is provided at the lower end, and the air duct tube 19-1 located at the tip is provided with a lower limit stop ring 19-8 at the lower end, and as shown in FIG. The air duct tube 19-1 located at the upper end is provided with an upper limit stop ring 19-3, and the lower end is provided with a lower connection port flange 19-10. The upper air duct tube 19-1 is hooked by its lower limit stop ring 19-8 to the upper limit stop ring 19-3 of the lower adjacent air duct tube 19-1.

As shown in FIGS. 6 and 7, the telescopic air duct 19 further includes a sealing member 19-6 and a sealing member pressing plate 19-7, and an upper limit flange 19-2 is provided at the upper end of the air duct tube 19-1. , The upper limit stop ring 19-3 is fixed to the upper limit flange 19-2 by a fixing bolt 19-4, the inner wall of the air duct tube 19-1 is provided with a step 19-9, and the sealing member pressing plate 19-7 is Located at the step 19-9, the bottom of the upper limit stop ring 19-3 is provided with an annular groove 19-3-1 in which the sealing member 19-6 is arranged. A space for accommodating the seal member 19-6 and the seal member pressing plate 19-7 is formed by combining with the seal member 19-6. and the seal member retainer plate 19-7 tighten the seal member 19-6 with a retainer plate bolt 19-5, the lower limit stop ring 19-8 is fixed to the outer wall of the air duct tube 19-1, and the air duct tube 19- 1 near the bottom end of the air duct tube 19-1, which is used to connect the lower adjacent section air duct tube 19-1, the material of the air duct tube 19-1 is smooth surface, not easy to deform, corrosion resistant stainless steel , nylon or polyurethane material.

The telescopic air duct 19 as a whole is composed of a plurality of casings, the upper limit flange 19-2 of the smallest diameter casing may be fixedly connected to the telescopic air duct flange connection port 18-4, and the largest diameter casing may have a lower A limit stop ring 19-8 is not provided, a lower connection port flange 19-10 is provided at the opening of the air duct tube 19-1, and the bottom air duct fixing connection port 20 is fixedly connected to the telescopic air duct connection port 20-4. Used.

As shown in FIG. 4, the bottom air duct fixing connection port 20 is used to connect to the bottom opening of the telescopic air duct 19, is connected to a pipe communicating with the air supply section, and serves as a fixing base to the equipment in the Eurosilo. is fixed to the spiral frame A-shaped frame 11, and the bottom air duct fixing connection port 20 includes an air duct connection flange 20-1, a connection port air duct 20-2, an air duct connection port box 20-3, and a telescopic air duct connection including a mouth 20-4, a telescoping air duct connection flange 20-5, a closure plate 20-6, a support frame 20-7, and a mounting platform 21;
The air duct connection port box 20-3 has a box-like structure in which the inside is hollow, and the inlets of the pipes arranged in the box may be communicated, and the expandable air duct connection port 20-4 is provided at the top. A telescopic air duct connection port flange 20-5 is provided at the end of the telescopic air duct connection port 20-4. The bottom opening of the air duct connection box 20-3 is fixed, and the side wall of the air duct connection box 20-3 is provided with four connection air ducts 20-2 to be connected to the ventilation air duct 22 for transporting gas. are provided with air duct connection port flanges 20-1, and these four connection port air ducts 20-2 and telescopic air duct connection ports 20-4 communicate within the air duct connection port box 20-3, so ventilation is required. Leakage is avoided by closing the connecting port air duct 20-2 with the closing plate 20-6. The air duct connection box 20-3 is fixed to the mounting platform 21 by the support frame 20-7, and the mounting platform 21 is fixed to the spiral frame A-frame 11.

A ventilation air duct 22 is fixed as necessary at a position of the spiral frame 8 and the spiral frame central platform 14 that does not affect the walking of the operator, and the end of the ventilation air duct 22 communicates with the connection port air duct 20-2. However, a plurality of air intake and exhaust openings 23 for ventilation are provided at intervals in the ventilation air duct 22, thereby fulfilling the air supply and exhaust needs at these locations, and the second fan 17 is located at the first It may correspond to the position of the fan 16, ie the position of the second fan 17 is closest to the position of the first fan 16 and is therefore advantageous for gas suction and exhaust.

Fig. 9 shows a schematic diagram of the structure of the entire ventilation expansion/contraction pipe device for the coal storage Eurosilo, Fig. 10 shows a schematic diagram of the installation position of the ventilation expansion/contraction pipe device for the coal storage Eurosilo in the Eurosilo, The working principle of the ventilation telescopic pipe device is explained as follows.

After the practical use of the first fan 16 in the silo cover 15 of the eurosilo, only the gas in the region near the top of the interior of the eurosilo can be discharged, and in the lower part, near the coal pile, especially at the height of the coal pile. When the distance of the coal pile surface from the silo top is lower than 15 meters, the gas at the bottom is difficult to be discharged by the silo top fan, and in fact, when the silo top fan is running, the coal pile at the bottom is I do not feel the gas flow in the vicinity, and for this reason, when replacing the gas in the silo only with the fan at the top of the silo, the effect is poor and it takes a long time (longer than 10 hours) to replace the gas. need to go to the spiral frame 8, the spiral frame central platform 14, and the spiral frame A-shaped frame 11 in the silo to work. Exhausting with the first fan 16 in the silo cover 15 requires a long wait and is also very prejudicial to the personal safety of the operator working inside the silo. Therefore, an air transport channel can be provided in the position of the silo top, that is, in the motion plane space from the vicinity of the rotary frame 4 to the spiral frame 8, and this channel will transport the air outside the silo sent by the first fan 16 into the silo. can be transported near the upper surface of the coal pile, and the space of the spiral frame 8 and the spiral frame A-shaped frame 11 can both receive the air outside the silo, and thus the operator mainly works The original harmful gas at the bottom can be raised and discharged out of the silo through various gaps in the silo cover 15 while satisfying the gas requirements of 1 and ensuring the work safety of the operator.

The rotary mount 4 and central winch platform 12 rotate around the axis of the central telescopic blanking tube 6 at the top of the silo and rotate in a fixed horizontal plane, while the spiral frame 8, spiral frame A-shaped frame 11 and spiral frame center. The platform 14 is combined, rotates around the axis of the central telescopic blanking tube 6, and under the action of the spiral frame lifting wire rope 7, is always synchronized with the rotation of the rotary gantry 4, and the rotary gantry 4 is always It is directly above the spiral frame 8 and the spiral frame A-shaped frame 11, and the spiral frame 8, the spiral frame A-shaped frame 11, and the spiral frame central platform 14 are combined, and can be lifted up and down by being pulled by the spiral frame lift wire rope 7. to meet the needs of stacking and unloading coal, thus the distance between the rotary gantry 4 and the combination of the spiral frame 8, spiral frame A-shaped frame 11 and spiral frame central platform 14 is A set of rotary racks 4 are installed on both sides of the central winch platform, which are arranged symmetrically with respect to the central axis of rotation. A spiral frame central platform 14 has a spiral frame 8 on one side. Since the screw machine 9 is arranged while being installed, and only the spiral frame A-shaped frame 11 is arranged on the other side, the weight is obviously lighter than the spiral frame 8 on the other side, and this spiral frame Since no other equipment is located in the A-frame 11, it is perfectly reasonable to place ventilation equipment in this area.

The two first fans 16 are configured to have a forward and reverse rotation function, and can be operated independently or simultaneously, and are used to discharge gas in the silo or supply air into the silo. The spiral frame A-shaped frame 11 is provided with a bottom air duct fixing connection port 20 for fixed connection with the lower connection port of the telescopic air duct 19, and when it is extended normally, the telescopic air duct 19 is adjacent The two sections slide relative to each other, which increases the distance after both are joined, and when they are stretched out, the larger diameter section moves downward and the upper limit stop ring 19- of that section. 3 is suspended against the lower limit stop ring 19-8 of the section above it, so that the outwardly extending seal member 19-6 directly contacts the upper surface of the lower limit stop ring 19-8. , and the upper limit stop ring 19-3 of the air duct tube of the lower large diameter section adjacent to the lower limit stop ring 19-8 of the upper section, which performs a sealing effect and prevents leakage of the gas transported in the pipe. When they come into contact, the relative movement between the two sections stops, they stop stretching, and the combination consisting of spiral frame 8, spiral frame A-shaped frame 11, and spiral frame central platform 14 is pulled by spiral frame lift wire rope 7. telescopic air duct 19 is fully extended, and the upper limit stop ring 19-3 and lower limit stop ring 19-8 of all air duct tubes 19-1 extend to the lower part of the air duct tube 19-1 of the adjacent section, respectively. A combination consisting of the spiral frame 8, the spiral frame A-shaped frame 11, and the spiral frame central platform 14 when the telescopic air duct 19 is retracted, while the limit stop ring 19-8 is suspended over the upper limit stop ring 19-3. is pulled by the spiral frame lift wire rope 7 and moves upward. After the section is inserted into the large diameter section and completely deflated, the air duct tubes of the small diameter section and the adjacent smaller diameter section begin to contract and move, thus creating a telescopic air The contraction motion of the duct 19 is formed, and the expansion and contraction function is achieved by the relative movement of two adjacent sections of the air duct tube 19-1. Meets the requirement to vary the distance between the combination and the rotary mount 4.

The ventilation pipe 18-3 is fixedly connected to the upper opening of the telescopic air duct 19, the other end is connected to the second fan 17, the ventilation pipe 18-3 has a bend, and can be adjusted according to actual needs. Alternatively, the position of the second fan 17 mates with the first fan 16 at the top of the Eurosilo so that the incoming and outgoing air of the first fan 16 corresponds to the incoming and outgoing air of the second fan 17. is ensured and ventilation efficiency is maximized.

The spiral frame 8 and the spiral frame central platform 14 are the active area of the operator entering the silo, and if a ventilation air duct 22 is provided in this area, when supplying air into the silo, one of the first fans 16 is the euro silo. At this time, the rotary frame 4 may be stopped below the first fan 16 that supplies air, or may correspond to the first fan 16, and the second fan 17 Air is supplied downwards and thus the fresh air outside the silo is transported through the telescoping air duct 19 to the lower ventilation air duct 22 inside the silo and finally exhausted through the inlet and outlet 23, thereby It can ensure that the air in the area meets the requirements, and the work stability of equipment maintenance, inspection and operation is ensured. Finally, a large amount of outside silo air rises or dilutes the original gases after being transported into the silo, and these gases rise along the silo walls to the joint gaps with the silo cover 15. The gas is then discharged out of the silo, and such a venting process provides rapid replacement of the gas inside the silo with the gas outside the silo. The euro silo has gas only in a space of 100,000 cubic meters when open and tens of thousands of cubic meters when coal is piled up, and if the ventilation volume of the second fan 17 is 30,000 cubic meters per hour, it can be used for several hours. All the air in the silo can be replaced inside the silo, and the ventilation position is provided in the operator's work area, thus greatly ensuring the operator's safety.

At the time of evacuation, while the first fan 16 is exhausting out of the silo, the second fan 17 can cooperate with the first fan 16 in a bleed mode, sucking the air at the bottom near the top of the silo and the first A fan 16 helps to expel these gases, such a way that the various gases at the bottom of the silo can be expelled directly out of the silo, and the outside air can also flow through the silo walls and the silo cover 15 of the Eurosilo. This is essentially a method of displacing gas within the silo.

This embodiment makes use of the Eurosilo's structural and operational features to rationally arrange and install the structure between the upper rotary frame 4 of the Eurosilo and the lower spiral frame 8 of the Eurosilo. proposed a ventilation telescopic pipe device for coal storage Eurosilo that satisfies the requirements for transporting air in a It can meet transportation requirements, and in the actual ventilation process, this device can work in cooperation with the first fan 16 in various ways, any way to exhaust the gas in the silo out of the silo. The ventilation efficiency is thus improved and the safety of the eurosilo operation and operators is greatly ensured.

The foregoing has described in detail the preferred specific embodiments of the present invention. However, many modifications and variations can be made by those skilled in the art based on the concept of the present invention without creative effort. Therefore, technical solutions that a person skilled in the art can obtain through logical analysis, reasoning or limited experimentation based on the prior art according to the concept of the present invention are all within the scope of protection determined by the claims of the utility model registration. should be included in

1 fuselage 2 feed port 3 silo top coal transport cradle 4 rotary cradle 6 center telescopic blanking tube 7 spiral frame lift wire rope 8 spiral frame 9 stacking screw machine 11 spiral frame A frame 12 central winch platform 14 spiral frame central platform 15 Silo cover 16 First fan 17 Second fan 18 Top air duct fixing connection port 19 Telescopic air duct 20 Bottom air duct fixing connection port 21 Mounting platform 22 Ventilation air duct 23 Air intake/exhaust port 18-1 Fixed base 18-2 Fixed foot 18- 3 Ventilation pipe 18-4 Expansion air duct flange connection port 18-5 Fan flange connection port 19-1 Air duct tube 19-2 Upper limit flange 19-3 Upper limit stop ring 19-4 Fixing bolt 19-5 Holding plate bolt 19-6 Seal member 19-7 Seal member holding plate 19-8 Lower limit stop ring 19-9 Step 19-10 Lower connection flange 20-1 Air duct connection flange 20-2 Connection air duct 20-3 Air duct connection box 20-4 Expandable air duct connection port 20-5 Expandable air duct connection port flange 20-6 Blocking plate 20-7 Support frame 19-3-1 Annular groove

Claims (9)

A ventilation telescopic pipe device for a coal storage eurosilo, comprising:
a second fan (17), a top air duct fixing connection (18), a telescopic air duct (19), a bottom air duct fixing connection (20), a mounting platform (21) and a ventilation air duct (22). said telescopic air duct (19) is parallel to the eurosilo central telescopic blanking tube (6), said top air duct fixing connection port (18) is connected at one end to said second fan (17) , the other end communicates with the tip of the telescopic air duct (19), and the bottom end of the telescopic air duct (19), the connection port for fixing the bottom air duct (20) and the ventilation air duct (22) are sequentially communicated. and said bottom air duct fixing connection port (20) is fixed to the eurosilo spiral frame A-shaped frame (11). The telescopic air duct (19) includes a plurality of air duct tubes (19-1) that are coaxially fitted in sequence, and the air duct tube (19-1) located in the middle has an upper limit stop ring (19- 3) is provided, a lower limit stop ring (19-8) is provided at the lower end, the air duct tube (19-1) located at the tip is provided with the lower limit stop ring (19-8) at the lower end, The air duct tube (19-1) located at the bottom end is provided with the upper limit stop ring (19-3) at the upper end, the lower connection port flange (19-10) at the lower end, and the lower connection port. A flange (19-10) is fixedly connected to the bottom air duct fixing connection port (20), and the air duct tube (19-1) located above is lowered by the lower limit stop ring (19-8). 2. The ventilation expansion and contraction pipe device for a coal storage Eurosilo according to claim 1, wherein the upper limit stop ring (19-3) of the adjacent air duct tube (19-1) is hooked. An upper limit flange (19-2) is provided at the upper end of the air duct tube (19-1), and the upper limit stop ring (19-3) is fixed by a fixing bolt (19-4) to the upper limit flange (19- 2) The ventilation telescopic pipe device for coal storage euro silo according to claim 2, characterized in that it is fixed to . The telescopic air duct (19) further includes a sealing member (19-6) and a sealing member pressing plate (19-7), and a step (19-9) is provided on the inner wall of the air duct tube (19-1), The seal member pressing plate (19-7) is positioned at the step (19-9), and the bottom of the upper limit stop ring (19-3) is an annular groove ( 19-3-1) is provided, the seal member (19-6) is positioned in the annular groove (19-3-1), and the upper limit stop ring (19-3) and the seal member pressing plate 4. The ventilation telescopic pipe device for coal storage Eurosilo according to claim 3, characterized in that (19-7) tightens said sealing member (19-6) with a pressing plate bolt (19-5). The top air duct fixing connection port (18) includes a fixed base (18-1) and a ventilation pipe (18-3), and one end of the ventilation pipe (18-3) is connected to the second fan (17). A fan flange connection port (18-5) is provided for connecting, and a telescopic air duct flange connection port (18-4) for connecting the upper opening of the telescopic air duct (19) is provided at the other end, and the fixed base (18-1) is provided on the ventilation pipe (18-3), the fixed base (18-1) is provided with a fixed foot (18-2), and the fixed base (18-1) is provided with the fixed foot The ventilating telescopic pipe device for coal storage eurosilo according to claim 1, characterized in that it is fixed to the rotary pedestal (4) of the eurosilo by (18-2). The connection port for fixing the bottom air duct (20) includes a connection port air duct (20-2), an air duct connection port box (20-3), an extendable air duct connection port (20-4), and a closing plate (20-6). ), a support frame (20-7) and the mounting platform (21), wherein the air duct connection box (20-3) comprises the telescopic air duct connection (20-4) and the connection air duct (20 -2), a telescopic air duct connection port flange (20-5) is provided at the end of the telescopic air duct connection port (20-4), and the telescopic air duct (19) is connected to the telescopic air duct connection port flange ( 20-5), the connection port air duct (20-2) is provided with an air duct connection port flange (20-1) at the end, and the ventilation air duct (22) communicates with the connection port air duct (20-2) through the air duct connection port flange (20-1), and the air duct connection port box (20-3) is connected by the support frame (20-7). 2. The coal storage eurosilo according to claim 1, characterized in that it is fixed to the mounting platform (21), and the mounting platform (21) is fixed to the spiral frame A-frame (11) of the eurosilo. Ventilation telescopic pipe device. A plurality of connection port air ducts (20-2) are provided, and all of the plurality of connection port air ducts (20-2) are provided on side walls of the air duct connection port box (20-3). The ventilation telescopic pipe device for coal storage eurosilo according to claim 6. The bottom air duct fixing connection port (20) further includes the blocking plate (20-6) for blocking the connection port air duct (20-2), and the blocking plate (20-6) is the air duct connection port. The ventilation telescopic pipe device for coal storage eurosilo according to claim 7, characterized in that it is adapted to the flange (20-1). 2. The ventilation telescopic pipe device for coal storage Eurosilo according to claim 1, characterized in that a plurality of ventilation intake/exhaust ports (23) are provided at intervals in the ventilation air duct (22).

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