Automatic feeding device with fireproof function

Abstract

The application discloses an automatic feeding device with a fireproof function in the field of conveying equipment, which comprises a support, a receiving hopper and a receiving hopper, the receiving hopper is installed on the top of the support through a balance weight and a rotating support which can swing up and down, a discharging pipe is arranged at the bottom of the receiving hopper, a fixed gate is arranged in the receiving hopper, when there is no material in the receiving hopper, the bottom outlet of the discharging pipe is attached to the fixed gate under the action of the moment of the balance weight, when a certain amount of material is accumulated in the receiving hopper, the receiving hopper can be deflected around the rotating support, so that the bottom of the discharging pipe is separated from the fixed gate. The automatic quantitative feeding device is installed between adjacent process pipelines, when conveying the material, a certain amount of buffer layer of the conveying material can be formed in the device, when combustion occurs in the previous process, the fixed gate can cut off the conveying pipeline and prevent the burning material from entering the pipeline of the next process, so that the material of the adjacent process is prevented from being combusted, the production efficiency is ensured, and the safety of production is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of conveying equipment, in particular to an automatic feeding device with fireproof function. BACKGROUND

[0002] In the conveying process of flammable and explosive solid materials, there is a process of self-flow conveying from top to bottom by using the weight of the materials, such as long-distance conveying of solid materials by using inclined pipelines. Since the solid materials rub against the pipelines, heat is generated, and it is possible to cause combustion and explosion. In order to prevent the adjacent processes and the conveying pipelines from being ignited and exploded due to the accident, there are currently two ideas, one is to use the segmented conveying method to avoid the temperature rise of the materials due to long-distance conveying, and the other is to arrange fireproof structures in the pipelines. The disadvantage is that if the segmentation is too much, the conveying efficiency is very low when the adjacent process pipelines do not convey materials during the conveying of a process, and the equipment between the processes cannot be operated at the same time. At the same time, a large number of transition hoppers are added between the processes, and the production efficiency is low. In addition, there is no pipeline conveying equipment that can meet the conveying of materials and quickly block and extinguish the flame in an emergency in the existing fireproof and fire extinguishing equipment. SUMMARY

[0003] In order to overcome the deficiencies of flammable and explosive solid materials in the conveying process, the technical problem to be solved by the present application is to provide an automatic feeding device with fireproof function.

[0004] The technical scheme adopted by the present application to solve the technical problem is:

[0005] The automatic feeding device with fireproof function comprises a support, a receiving hopper and a receiving hopper arranged on the support, one side of the receiving hopper is provided with a balance frame, one end of the balance frame away from the receiving hopper is provided with a counterweight, the balance frame is installed on the top of the support through a rotating support that can swing up and down, a limiting mechanism is arranged on the side of the receiving hopper away from the balance frame, a discharge pipe is arranged at the bottom of the receiving hopper, the discharge pipe extends into the receiving hopper, a fixed gate is arranged in the receiving hopper, when there is no material in the receiving hopper, the bottom outlet of the discharge pipe is attached to the fixed gate under the action of the moment of the counterweight, when a certain amount of material is accumulated in the receiving hopper, the receiving hopper can deflect around the rotating support to overcome the moment of the counterweight, so that the bottom of the discharge pipe is separated from the fixed gate.

[0006] Further, one end of the balance frame away from the receiving hopper is a threaded rod, the counterweight is slidably installed on the threaded rod, and a fixed nut is further arranged on the threaded rod.

[0007] Further, the limiting mechanism comprises a limiting piece arranged on the side of the receiving hopper, and a limiting screw arranged on the top of the support corresponding to the limiting piece, the height of the limiting screw is adjustable.

[0008] Further, the fixed gate is fixed in the receiving hopper by four adjusting screws.

[0009] Further, an elastic sealing cover is arranged between the bottom of the receiving hopper and the opening of the receiving hopper, and an observation window is arranged on the side of the receiving hopper.

[0010] Further, a spraying main pipe is further arranged, a connector is arranged at the inlet of the bottom end of the spraying main pipe, the outlet of the top end of the spraying main pipe is arranged above the receiving hopper, a heat-sensitive valve and a spraying head are arranged at the outlet.

[0011] Further, a receiving pipe is further arranged below the outlet of the receiving hopper, a guide rod is arranged in the receiving pipe, a valve seat is slidably arranged on the guide rod, a valve plate capable of blocking the outlet of the receiving hopper is arranged in the valve seat, a first spring is arranged between the bottom of the valve plate and the valve seat, a valve rod is arranged on the valve seat and penetrates the receiving pipe, a handle is arranged at the end of the valve rod away from the valve seat.

[0012] Further, a sleeve is arranged outside the receiving pipe, the valve rod is slidably arranged in the sleeve, a second spring is arranged between the valve rod and the end of the sleeve, a positioning hole is arranged on the valve rod, and a positioning mechanism is arranged on the side of the sleeve, the positioning mechanism comprises a positioning pin capable of being inserted into the positioning hole, in a natural state, the valve seat is located below the outlet of the receiving hopper under the action of the second spring, and when the valve seat is moved outward to completely open the outlet of the receiving hopper, the positioning pin is aligned with the positioning hole.

[0013] Further, the positioning mechanism further comprises an upper cover and a lower cover combined together, a three-way connector is arranged on the top of the upper cover and communicates with the upper cover, the other two connecting ports of the three-way connector respectively communicate with the spraying main pipe and the spraying branch pipe, the other end of the spraying branch pipe extends above the receiving hopper, and a hot melt sealing head is arranged at the outlet of the other end, the lower cover communicates with the side of the sleeve, an elastic diaphragm is arranged in the lower cover, the periphery of the elastic diaphragm is in contact and sealed with the inner cavity of the lower cover, the upper end of the positioning pin penetrates and is fixed on the elastic diaphragm, and a third spring is arranged between the top of the positioning pin and the outer wall of the sleeve.

[0014] Further, a nozzle is further arranged on the side of the receiving pipe, the nozzle communicates with the pipeline between the spraying head and the heat-sensitive valve at the top of the spraying main pipe through a hose.

[0015] The beneficial effect of the present application is that by setting the automatic quantitative feeding device between the adjacent process pipelines, when conveying the material, a certain amount of conveying material buffer layer can be formed in the device, and the buffer layer can be maintained for a certain time, when the buffer layer reaches a certain amount, the material is quantitatively added to the next process, when the previous process burns, because the material is less, the fixed gate can cut off the conveying pipeline to prevent the burning material from entering the next process pipeline, prevent the spread of fire, prevent the adjacent process material from burning, and improve the safety of production while ensuring the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 is the front view of the overall structure of the present application;

[0017] Fig. 2 is the side view of the overall structure of the present application;

[0018] Fig. 3 is a partial schematic view of the positioning mechanism of the present application;

[0019] In the figure, 1 is a support, 2 is a receiving hopper, 3 is a receiving hopper, 4 is a spraying main pipe, 5 is a receiving pipe, 6 is a positioning mechanism, 7 is a spraying branch pipe, 8 is a nozzle, 21 is a balance frame, 22 is a counterweight, 23 is a rotating support, 24 is a discharging pipe, 25 is a threaded rod, 26 is a fixed nut, 27 is a limiting piece, 28 is a limiting screw, 31 is a fixed gate, 32 is an adjusting screw, 33 is an elastic sealing cover, 34 is an observation window, 41 is a joint, 42 is a thermal sensitive valve, 43 is a spraying head, 51 is a guide rod, 52 is a valve seat, 53 is a valve plate, 54 is a first spring, 55 is a valve rod, 56 is a handle, 57 is a sleeve, 58 is a second spring, 59 is a positioning hole, 61 is a positioning pin, 62 is an upper cover, 63 is a lower cover, 64 is a three-way joint, 65 is an elastic diaphragm, 66 is a third spring, 71 is a hot melt sealing head, 81 is a hose. DETAILED DESCRIPTION

[0020] The present application will be further described below in conjunction with the drawings.

[0021] It should be noted that if the present application involves directional indication language, such as up, down, left, right, front, back, and directional language, it is for the purpose of describing the relative position relationship between components, not for the absolute position specification of the relative components and the position relationship between components. It is only used to explain the relative position relationship between components, movement conditions, etc. in a certain posture. If the specific posture changes, the directional indication will also change accordingly. If the present application involves quantity language, such as "many", "multiple", "several", etc., it specifically refers to two or more than two.

[0022] For example, Figs. 1-3As shown, the automatic feeding device with fireproof function comprises a support 1, a receiving hopper 2 and a receiving hopper 3 arranged on the support 1, one side of the receiving hopper 2 is provided with a balance frame 21, one end of the balance frame 21 away from the receiving hopper 2 is provided with a counterweight 22, the middle part of the balance frame 21 is installed on the top of the support 1 through a rotating support 23 which can swing up and down, a limiting mechanism is arranged on the side of the receiving hopper 2 away from the balance frame 21, the bottom of the receiving hopper 2 is provided with a discharge pipe 24 which extends into the receiving hopper 3, the receiving hopper 3 is provided with a fixed gate 31, when there is no material in the receiving hopper 2, the bottom outlet of the discharge pipe 24 is attached to the fixed gate 31 under the action of the moment of the counterweight 22, when a certain amount of material is accumulated in the receiving hopper 2, the receiving hopper 2 can be deflected around the rotating support 23 to overcome the moment of the counterweight 22, so that the bottom of the discharge pipe 24 is separated from the fixed gate 31. In order to ensure the stability of installation, the balance frame 21 should be connected to the two sides of the receiving hopper 2 symmetrically, the rotating support 23 should also include two parts which are symmetrically arranged on the two sides of the receiving hopper 2, and the center of gravity of the counterweight 22 should be located on the symmetry axis of the two rotating supports 23. The limiting mechanism is mainly used to limit the maximum deflection angle of the receiving hopper 2 to avoid the overturning of the receiving hopper 2. The discharge pipe 24 is a hard pipe to ensure that its end is in contact with the fixed gate 31 in the vertical plane.

[0023] The specific working process of the present application is as follows: first, in the natural state, i.e. when there is no material in the receiving hopper 2, the moment generated by the counterweight 22 is balanced by the weight of the receiving hopper 2 and the pushing force of the fixed gate 31 on the discharge pipe 24, and the discharge pipe 24 is in a blocked state; when material enters the receiving hopper 2, it will first accumulate in the discharge pipe 24 and the receiving hopper 2, until the moment generated by the material added to the receiving hopper 2 is equal to the moment generated by the counterweight 22, the receiving hopper 2 is in a limit balance state; when the material continues to increase, the receiving hopper 2 will be deflected, so that the bottom outlet of the discharge pipe 24 is separated from the fixed gate 31, and the material begins to enter the receiving hopper, if the subsequent material is added quantitatively to the receiving hopper 2, the receiving hopper 2 can quantitatively deliver the material to the receiving hopper 3. Since the material falling port formed between the discharge pipe 24 and the fixed gate 31 is opened and closed by the material accumulated in the receiving hopper 2, when the receiving hopper 2 or the previous process catches fire, the material entering the receiving hopper 2 decreases, the discharge pipe 24 and the fixed gate 31 can immediately come into contact, thereby blocking the conveying channel, preventing the flame from being transmitted to the receiving hopper 3 and the processes below, and improving the safety of production while ensuring the production efficiency.

[0024] For the installation of the counterweight 22, the application adopts a threaded rod 25 arranged at the end of the counterbalance 21 away from the receiving hopper 2, the counterweight 22 is slidably arranged on the threaded rod 25, and a fixing nut 26 is arranged on the threaded rod 25. By adjusting the position of the counterweight 22 on the threaded rod 25, the balance torque can be adjusted, thereby controlling the amount of buffer material in the receiving hopper 2, and ensuring that the material accumulated in the receiving hopper 2 and the discharge pipe 24 can avoid rapid spread of the flame to the receiving hopper 3.

[0025] For the limiting mechanism, the application adopts a limiting member 27 arranged on the side of the receiving hopper 2, and a limiting screw 28 arranged on the top of the support 1 corresponding to the limiting member 27, the height of the limiting screw 28 is adjustable. When the receiving hopper 2 is deflected to the limiting member 27 in contact with the limiting screw 28, the receiving hopper 2 cannot rotate, and by adjusting the height of the limiting screw 28, the maximum deflection angle of the receiving hopper 2 can be adjusted. The limiting mechanism controls the maximum deflection of the receiving hopper 2, and correspondingly controls the maximum gap between the discharge pipe 24 and the fixed gate 31, thereby controlling the maximum speed of the material falling.

[0026] Due to the limited deflection angle of the receiving hopper 2, in order to improve the adjustment range and flexibility, the fixed gate 31 is preferably also arranged in an adjustable form, specifically, the fixed gate 31 is fixed in the receiving hopper 3 by four adjusting screw rods 32. By the four adjusting screw rods 32, the distance of the fixed gate 31 to the discharge pipe 24 can be adjusted horizontally, and the angle of the fixed gate 31 can also be adjusted, which can ensure stable contact between the end of the discharge pipe 24 and the fixed gate 31 during installation and debugging.

[0027] In order to avoid material flying up and splashing, an elastic sealing cover 33 is arranged between the bottom of the receiving hopper 2 and the opening of the receiving hopper 3, the elastic sealing cover 33 can be made of elastic cloth to ensure that the receiving hopper 2 can deflect relative to the receiving hopper 3. Since the elastic sealing cover 33 is generally opaque, in order to observe the internal situation, an observation window 34 can be arranged on the side of the receiving hopper 3.

[0028] Further, in order to increase the fire resistance effect, the application also provides a spray fire extinguishing system, which specifically includes a spray main pipe 4, a connector 41 is arranged at the inlet of the bottom end of the spray main pipe 4, the outlet at the top end is located above the receiving hopper 2, and a thermal valve 42 and a spray head 43 are arranged at the outlet. The connector 41 is used to connect the fire fighting pipeline, when the material in the receiving hopper 2 is on fire, the thermal valve 42 is opened after being heated, and the spray head 43 sprays water mist to extinguish the flame.

[0029] In actual production, in order to facilitate material conveying, a receiving pipe 5 is further arranged below the outlet of the receiving hopper 3, in order to avoid the flame entering the receiving pipe 5, a guide rod 51 is arranged in the receiving pipe 5, a valve seat 52 is slidably arranged on the guide rod 51, a valve plate 53 capable of blocking the outlet of the receiving hopper 3 is arranged in the valve seat 52, a first spring 54 is arranged between the bottom of the valve plate 53 and the valve seat 52, a valve rod 55 penetrating out of the receiving pipe 5 is arranged on the valve seat 52, and a handle 56 is arranged on the end of the valve rod 55 away from the valve seat 52. The valve seat 52 can be manually opened or be opened by other automatic components. Taking the manual opening as an example, in normal working condition, the valve seat 52 is pulled out by the handle 56, the outlet of the receiving hopper 3 is opened, and normal material falling is realized; when an emergency occurs, the handle 56 is manually pushed, the valve seat 52 is moved below the outlet of the receiving hopper 3, the valve plate 53 is pressed against the outlet of the receiving hopper 3 under the action of the first spring 54, and the blocking effect of the receiving hopper 3 and the receiving pipe 5 is realized.

[0030] In order to improve the action speed, the preferred scheme is to set the opening and closing of the valve plate 53 as an automatic triggering structure. The scheme provided in the application is that a sleeve 57 is arranged outside the receiving pipe 5, the valve rod 55 is slidably inserted into the sleeve 57, a second spring 58 is arranged between the valve rod 55 and the end of the sleeve 57, a positioning hole 59 is arranged on the valve rod 55, and a positioning mechanism 6 is arranged on the side of the sleeve 57. The positioning mechanism 6 includes a positioning pin 61 capable of being inserted into the positioning hole 59. In the natural state, the valve seat 52 is located below the outlet of the receiving hopper 3 under the action of the second spring 58, when the valve seat 52 is moved outward to the outlet of the receiving hopper 3 and is completely opened, the positioning pin 61 is aligned with the positioning hole 59. The triggering of the positioning mechanism 6 can be in multiple ways, such as electromagnetic valves, relays and the like. The working process is as follows: in normal working condition, the valve rod 55 overcomes the second spring 58 and is stably guaranteed under the action of the positioning pin 61, when an emergency occurs, the positioning pin 61 is removed from the positioning hole 59 by the positioning mechanism 6, the valve rod 55 is returned under the action of the second spring 58, and the valve plate 53 blocks the outlet of the receiving hopper 3.

[0031] For the positioning mechanism 6, the application also provides a way to control through the spray fire extinguishing system, specifically, the positioning mechanism 6 further comprises an upper cover 62 and a lower cover 63 combined together, the upper cover 62 is provided with a tee joint 64 at the top thereof, the other two connecting ports of the tee joint 64 are respectively communicated with the spray main pipe 4 and the spray branch pipe 7, the other end of the spray branch pipe 7 extends above the receiving hopper 2, and a hot melt sealing head 71 is arranged at the outlet of the other end, the lower cover 63 is communicated with the side of the sleeve 57, an elastic diaphragm 65 in the lower cover 63, the periphery of the elastic diaphragm 65 is in contact and sealed with the inner cavity of the lower cover 63, the upper end of the positioning pin 61 passes through and is fixed on the elastic diaphragm 65, and a third spring 66 is arranged between the top of the positioning pin 61 and the outer wall of the sleeve 57. Fig. 3 Under normal conditions, the cavity formed by the upper cover 62 and the lower cover 63 is filled with pressurized water, which promotes the elastic diaphragm 65 to move downward, as shown in the figure, the inner cavity of the lower cover 63 is conical, and the edge of the elastic diaphragm 65 is also conical structure, so that the elastic diaphragm 65 can play a sealing role during the movement, and when the elastic diaphragm 65 moves downward, the positioning pin 61 will move downward to overcome the elastic force of the third spring 66 and be inserted into the positioning hole 59 of the valve rod 55, so as to ensure that the outlet of the receiving hopper 3 is in an open state; when the flame appears in the receiving hopper 2, the hot melt sealing head 71 is melted by heat, the spray branch pipe 7 starts to spray water, and at the same time, the pressure in the cavity of the middle part of the upper cover 62 and the lower cover 63 is reduced, the third spring 66 resets, and the positioning pin 61 is separated from the positioning hole 59, and the valve plate 53 resets under the action of the second spring 58 to block the outlet of the receiving hopper 3.

[0032] In order to further ensure that the flame does not enter the receiving pipe 5, a nozzle 8 is further arranged on the side of the receiving pipe 5, the nozzle 8 is communicated with the pipeline between the spray head 43 at the top of the spray main pipe 4 and the thermal sensitive valve 42 through a hose 81. When the thermal sensitive valve 42 is opened, the nozzle 8 can spray water synchronously with the spray head 43 to ensure that the flame does not spread to the receiving pipe 5 to affect the adjacent process.

Claims

1. An automatic feeding device with fireproof function, characterized in that: The system includes a support (1) and a receiving hopper (2) and a receiving hopper (3) mounted on the support (1). A balancing frame (21) is provided on one side of the receiving hopper (2). A counterweight (22) is provided at the end of the balancing frame (21) away from the receiving hopper (2). The middle part of the balancing frame (21) is mounted on the top of the support (1) via a rotating support (23) that can swing up and down. A limiting mechanism is provided on the side of the receiving hopper (2) away from the balancing frame (21). A discharge pipe (2) is provided at the bottom of the receiving hopper (2). 4) The discharge pipe (24) extends into the receiving hopper (3). The receiving hopper (3) is equipped with a fixed gate (31). When there is no material in the receiving hopper (2), the bottom outlet of the discharge pipe (24) is attached to the fixed gate (31) under the torque of the counterweight (22). When a certain amount of material accumulates in the receiving hopper (2), the receiving hopper (2) can overcome the torque of the counterweight (22) and deflect around the rotating bracket (23), so that the bottom of the discharge pipe (24) is separated from the fixed gate (31).

2. The automatic charging device with fireproof function according to claim 1, characterized in that: The end of the balance frame (21) away from the receiving hopper (2) is a threaded rod (25), the counterweight (22) is slidably mounted on the threaded rod (25), and a fixing nut (26) is also provided on the threaded rod (25).

3. The automatic charging device with fireproof function according to claim 1, characterized in that: The limiting mechanism includes a limiting member (27) disposed on the side of the receiving hopper (2) and a limiting screw (28) disposed on the top of the bracket (1) corresponding to the limiting member (27), the height of the limiting screw (28) being adjustable.

4. The automatic charging device with fireproof function according to claim 1, characterized in that: The fixed gate (31) is fixed inside the receiving hopper (3) by four adjusting screws (32).

5. The automatic charging device with fireproof function according to claim 1, characterized in that: An elastic sealing cover (33) is provided between the bottom of the receiving hopper (2) and the opening of the receiving hopper (3), and an observation window (34) is provided on the side of the receiving hopper (3).

6. The automatic charging device with fireproof function according to any one of claims 1-5, characterized in that: It also includes a spray pipe (4), which has a connector (41) at the bottom inlet and an outlet at the top located above the receiving hopper (2), and is equipped with a thermal valve (42) and a spray head (43) at the outlet.

7. The automatic charging device with fireproof function according to claim 6, characterized in that: Below the outlet of the receiving hopper (3), there is a receiving pipe (5). Inside the receiving pipe (5), there is a guide rod (51). A valve seat (52) is slidably mounted on the guide rod (51). Inside the valve seat (52), there is a valve plate (53) that can block the outlet of the receiving hopper (3). A first spring (54) is provided between the bottom of the valve plate (53) and the valve seat (52). A valve stem (55) that passes through the receiving pipe (5) is provided on the valve seat (52). A handle (56) is provided at the end of the valve stem (55) away from the valve seat (52).

8. The automatic charging device with fireproof function according to claim 7, characterized in that: The receiving pipe (5) is provided with a sleeve (57), the valve rod (55) is slidably inserted into the sleeve (57), a second spring (58) is arranged between the valve rod (55) and the end of the sleeve (57), the valve rod (55) is provided with a positioning hole (59), the side of the sleeve (57) is provided with a positioning mechanism (6), the positioning mechanism (6) comprises a positioning pin (61) which can be inserted into the positioning hole (59), in the natural state, the valve seat (52) is located below the outlet of the receiving hopper (3) under the action of the second spring (58), when the valve seat (52) is moved outward to completely open the outlet of the receiving hopper (3), the positioning pin (61) is aligned with the positioning hole (59).

9. The automatic charging device with fireproof function according to claim 8, characterized in that: The positioning mechanism (6) further comprises an upper cover (62) and a lower cover (63) combined together, the top of the upper cover (62) is provided with a three-way joint (64) which communicates with the upper cover (62), the other two connecting ports of the three-way joint (64) respectively communicate with the spray main pipe (4) and the spray branch pipe (7), the other end of the spray branch pipe (7) extends above the receiving hopper (2), and a hot melt sealing head (71) is arranged at the outlet of the other end, the lower cover (63) communicates with the side of the sleeve (57), an elastic diaphragm (65) is arranged in the lower cover (63), the periphery of the elastic diaphragm (65) is in contact and sealed with the inner cavity of the lower cover (63), the upper end of the positioning pin (61) penetrates and is fixed on the elastic diaphragm (65), and a third spring (66) is arranged between the top of the positioning pin (61) and the outer wall of the sleeve (57).

10. The automatic charging device with fireproof function according to claim 7, characterized in that: The side of the receiving pipe (5) is further provided with a nozzle (8), the nozzle (8) communicates with the pipeline between the spray head (43) at the top of the spray main pipe (4) and the thermal sensitive valve (42) through a hose (81).

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