Inhibition system for reducing dust in coal conveying process

Abstract

The utility model discloses a system for reducing dust suppression in a coal conveying process, which belongs to the field of dust suppression in a synthetic ammonia production process, and comprises a feeding belt conveyor and a spraying device, the spraying device comprises a control host, a gas storage tank, a water storage tank, a plurality of tail end spraying units and a water-gas distributor; an air inlet of the tail end spraying unit is connected with an air outlet of the air storage tank; a water inlet of the tail end spraying unit is connected with a water outlet of the water storage tank; each tail end spraying unit comprises a spraying controller and a dry fog nozzle, and the input end of the dry fog nozzle is connected with the output end of the corresponding spraying controller; the output end of the control host is connected with the input ends of the water-gas distributor and the spray controller; a plurality of dry fog nozzles are distributed on the feeding belt conveyor in the length direction of the feeding belt conveyor. The dry fog nozzles are arranged on the feeding belt, the air outlet electromagnetic valve and the water outlet electromagnetic valve are adjusted through the water-air distributor, and the mixing proportion of water and air in the spray box is controlled through the water flow speed and the air flow speed, so that the purpose of suppressing dust is achieved.

Description

Technical Field

[0001] The utility model relates to the field of dust suppression in a synthetic ammonia production process, in particular to a dust suppression system for reducing dust in a coal transportation process. Background Art

[0002] In the synthetic ammonia production process, coal is typically transported using a feeder belt conveyor. During transport, the various materials collide at the interface between the belt and the material, causing gases to be expelled. The high-pressure gas exerts a shearing effect, dispersing coal dust. The hopper's chute, often exceeding 5 meters in length, generates high-pressure airflow that also disperses dust. This dispersal of coal dust creates a harsh production environment. Reducing dust during transport and improving the workshop environment directly impact the safety and health of workers.

[0003] In view of this, the inventor conducted in-depth research on this demand, and thus came up with this case. Utility Model Content

[0004] In response to the problem of coal dust flying in the coal transportation process in the prior art, which affects the safety and health of workshop workers, the utility model provides a dust suppression system for reducing the coal transportation process, including a feeding belt conveyor and a spray device, the spray device including a control host, an air storage tank, a water storage tank, a plurality of terminal spray units, and a water-gas distributor for controlling the water-gas supply ratio in the air storage tank and the water storage tank; the air inlet of each terminal spray unit is respectively connected to the air outlet of the air storage tank, and the water inlet of each terminal spray unit is respectively connected to the water outlet of the water storage tank;

[0005] Each of the terminal spray units includes a spray controller and the dry mist nozzle, wherein the input end of the dry mist nozzle is connected to the output end of the corresponding spray controller; the output end of the control host is connected to the water vapor distributor and the input end of the spray controller;

[0006] The feeding belt conveyor is provided with a plurality of dry mist nozzles distributed along the length direction thereof.

[0007] A dry mist nozzle is set on the feeding belt, and the air outlet solenoid valve and the water outlet solenoid valve are adjusted by using a water-gas distributor. The water flow rate and air flow rate are used to control the mixing ratio of water and gas in the spray box to meet the purpose of suppressing dust.

[0008] Preferably, the air outlet of the gas storage tank is provided with an air outlet pipe, the water outlet of the water storage tank is provided with a water outlet pipe, the air outlet pipe is provided with an air outlet solenoid valve, the water outlet pipe is provided with a water outlet solenoid valve, and the output end of the water-gas distributor is connected to the air outlet solenoid valve and the input end of the water outlet solenoid valve;

[0009] The air inlet of the terminal spray unit is connected to the side of the air outlet solenoid valve on the air outlet pipe away from the air tank, and the water inlet of the terminal spray unit is connected to the side of the water outlet solenoid valve on the water outlet pipe away from the water tank.

[0010] Preferably, an air source filter is provided at the air outlet pipe of the air storage tank near the air outlet, and the air inlet of the air storage tank is connected to the air compressor.

[0011] Preferably, an air pressure gauge and an air pressure regulating valve are provided on the air outlet pipe, and a water pressure gauge and a water pressure regulating valve are provided on the water outlet pipe. The output ends of the air pressure gauge and the water pressure gauge are connected to the input end of the water vapor distributor, and the input ends of the air pressure regulating valve and the water pressure regulating valve are connected to the input end of the water vapor distributor.

[0012] Preferably, the feeding belt conveyor includes a frame, a feeding belt and a driving wheel for driving the feeding belt to move, the driving wheel is arranged at both ends inside the feeding belt, and the frame is provided with a grooved upper roller group for guiding the upper belt of the feeding belt along the length direction of the feeding belt; and the frame is provided with a plurality of dry mist nozzles along the length direction of the feeding belt.

[0013] Preferably, the dry mist nozzle is mounted on the frame via a universal joint assembly, and each of the universal joint assemblies is connected to the water vapor distributor.

[0014] Preferably, the dry mist nozzle includes a nozzle body, a spray port is formed at one end of the nozzle body, a spray adjustment assembly is provided on the spray port, the spray adjustment assembly includes a spray block and a block support rod, one end of the block support rod is mounted on the side wall of the nozzle body, and the other end is fixedly mounted on the side wall of the spray block;

[0015] The spray port is formed with a liquid inlet channel along the length direction of the nozzle body, and an air inlet channel communicating with the liquid inlet channel is formed on the side wall of the nozzle body.

[0016] Preferably, a swirl thread is formed on the inner sidewall of the liquid inlet channel. Liquid and gas enter the nozzle through the liquid inlet channel and the gas inlet channel respectively, form a swirl flow after passing through the liquid inlet channel provided with the swirl thread, and are sprayed out of the spray port. The water mist sprayed from the spray port passes through the spray block on the spray regulating assembly to form a dispersed water mist, which can reduce dust over a larger area.

[0017] Preferably, the trough-type upper roller group includes a trough-type frame and three rollers installed on the trough-type frame, the three rollers include oblique rollers located on both sides and a horizontal roller located in the middle, and a guide pressure plate for guiding the feeding belt is formed above the two oblique rollers, and the guide pressure plate is fixedly mounted on the frame.

[0018] Preferably, a guide trough is provided at the inlet of the feeder conveyor, and the guide trough is mounted on the frame. The guide trough is provided on the feeder conveyor. The guide trough is a trough-shaped structure similar in shape to the trough-shaped upper roller assembly. It is located at the inlet of the feeder conveyor and guides coal blocks falling from above, thereby reducing dust generated by collisions between the coal blocks and the feeder conveyor.

[0019] Beneficial effects:

[0020] The beneficial effects produced by adopting the technical solution of this utility model are as follows:

[0021] (1) A dry mist nozzle is set on the feeding belt, and the air outlet solenoid valve and the water outlet solenoid valve are adjusted by a water-gas distributor. The water flow rate and air flow rate are used to control the mixing ratio of water and gas in the spray box to meet the purpose of suppressing dust.

[0022] (2) Liquid and gas enter the nozzle from the liquid inlet channel and the air inlet channel respectively, and form a swirl after passing through the liquid inlet channel provided with a swirl thread and are sprayed out from the spray port. The water mist sprayed from the spray port forms a dispersed water mist after passing through the spray block on the spray regulating assembly, which can reduce dust in a larger area.

[0023] (3) A guide trough is provided on the feeding belt. The guide trough is a trough-shaped structure similar to the shape of the trough upper roller group. It is located at the entrance of the feeding belt conveyor. When the coal blocks fall from above, it can play a guiding role and reduce the dust generated by the collision between the coal blocks and the feeding belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 This is a schematic diagram of the structure of a preferred hopper and feeding belt conveyor of the utility model;

[0026] Figure 2 This is a schematic diagram of the internal cross-sectional structure of a preferred hopper of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of a preferred feeding belt conveyor of the present utility model;

[0028] Figure 4 This is the water, gas and electricity connection route diagram of the preferred dust suppression device of this utility model;

[0029] Figure 5 This is a control flow chart of a preferred dust suppression device of the present invention;

[0030] Figure 6 This is a schematic diagram of the internal structure of a preferred dry mist nozzle of the present invention. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] like Figure 1-6 As shown, the dust suppression system includes a hopper 1 and a feeding belt conveyor 2. The hopper 1 is located just above the inlet of the feeding belt conveyor 2. A drop chute 3 is provided at the outlet of the hopper 1. The outlet direction of the drop chute 3 is consistent with the conveying direction of the feeding belt conveyor 2. A dust hood 4 is provided at the outlet of the drop chute 3 to prevent dust from overflowing. A drop port is formed below the dust hood 4 for coal to fall onto the feeding belt conveyor 2. Several dry mist nozzles 100 are provided on the feeding belt conveyor 2 near the dust hood 4, and several dry mist nozzles 100 are distributed along the length of the feeding belt conveyor 2. A dust hood is provided at the outlet of the drop chute, and dry mist nozzles are provided on the feeding belt conveyor near the dust hood. The dust hood is used to prevent dust from overflowing during the coal dropping process, and the dry mist nozzles are used to suppress the dust that moves along with the coal on the feeding belt conveyor, thereby achieving the purpose of dust suppression.

[0033] As a preferred embodiment, the dust hood 4 includes a hood top plate 41 and a hood side plate 42 surrounding the hood top plate 41. The hood top plate 41 is provided with an exhaust pipe 43 for extracting dust from the dust hood 4. The hood side plate can block most of the dust generated during the blanking process and extract it through the exhaust pipe.

[0034] As a preferred embodiment, Figure 4-5 As shown, the apparatus further includes a spray device 5, which includes a control host 51, an air storage tank 52, a water storage tank 53, a plurality of terminal spray units 54, and a water vapor distributor 55 for controlling the water vapor supply ratio in the air storage tank 52 and the water storage tank 53; the air inlet of each terminal spray unit 54 is respectively connected to the air outlet of the air storage tank 52, and the water inlet of each terminal spray unit 54 is respectively connected to the water outlet of the water storage tank 53;

[0035] Each of the terminal spray units 54 includes a spray controller 541 and the dry mist nozzle 100. The input end of the dry mist nozzle 100 is connected to the output end of the corresponding spray controller 541; the output end of the control host 51 is connected to the water vapor distributor 55 and the input end of the spray controller 541.

[0036] As a preferred embodiment, the air outlet of the gas storage tank 52 is provided with an air outlet pipe 521, the water outlet of the water storage tank 53 is provided with a water outlet pipe 531, the air outlet pipe 521 is provided with an air outlet solenoid valve 522, and the water outlet pipe 531 is provided with a water outlet solenoid valve 532. The output end of the water-gas distributor 55 is connected to the input ends of the air outlet solenoid valve 522 and the water outlet solenoid valve 532.

[0037] The air inlet of the terminal spray unit 54 is connected to the side of the air outlet solenoid valve 522 on the air outlet pipe 521 away from the air tank 52. The water inlet of the terminal spray unit 54 is connected to the side of the water outlet solenoid valve 532 on the water outlet pipe 531 away from the water tank 53. A water-gas distributor is used to adjust the air outlet solenoid valve and the water outlet solenoid valve. The water flow rate and air flow rate are used to control the water-gas mixing ratio in the spray box to achieve the purpose of dust suppression.

[0038] As a preferred embodiment, an air source filter 523 is provided near the air outlet of the air outlet pipe 521 of the air storage tank 52 , and the air inlet of the air storage tank 52 is connected to an air compressor 524 .

[0039] As a preferred embodiment, the air outlet pipe 521 is provided with an air pressure gauge 525 and an air pressure regulating valve 526, and the water outlet pipe 531 is provided with a water pressure gauge 533 and a water pressure regulating valve 534. The output ends of the air pressure gauge 525 and the water pressure gauge 533 are connected to the input end of the water vapor distributor 55, and the input ends of the air pressure regulating valve 526 and the water pressure regulating valve 534 are connected to the output end of the water vapor distributor 55.

[0040] As a preferred embodiment, Figure 3As shown, the feeding belt conveyor 2 includes a frame 21, a feeding belt 22 and a driving wheel 23 for driving the feeding belt 22 to move. The driving wheel 23 is arranged at both ends inside the feeding belt 22. A grooved upper roller group 24 is installed on the frame 21 along the length direction of the feeding belt 22 to guide the upper belt of the feeding belt 22; and a plurality of dry mist nozzles 100 are arranged on the frame 21 along the length direction of the feeding belt 22.

[0041] The frame 21 is further provided with a belt guide wheel 25 for guiding the lower belt of the feeding belt 22, and the feeding belt conveyor 2 includes at least a horizontal belt conveying structure 26 and an upward belt conveying structure 27 arranged horizontally along its length direction.

[0042] The trough-type upper roller group 24 includes a trough-type frame 241 and three rollers 242 installed on the trough-type frame 241. The three rollers include oblique rollers located on both sides and a horizontal roller located in the middle. A guide pressure plate 243 for guiding the feeding belt 22 is formed above the two oblique rollers. The guide pressure plate 243 is fixedly mounted on the frame 21.

[0043] As a preferred embodiment, a material guide trough 244 is provided on the feeding belt conveyor 2 at a position corresponding to the material drop opening below the dust removal cover 4 , and the material guide trough 244 is installed on the frame 21 .

[0044] As a preferred embodiment, the dry mist nozzle 100 is mounted on the frame 21 via a universal joint assembly 542 , and each universal joint assembly 542 is connected to the water vapor distributor 55 .

[0045] As a preferred embodiment, Figure 6 As shown, the dry mist nozzle 100 includes a nozzle body 101, a spray port 102 is formed at one end of the nozzle body 101, a spray adjustment assembly 103 is provided on the spray port 102, and the spray adjustment assembly 103 includes a spray block 104 and a block support rod 105, one end of the block support rod 105 is mounted on the side wall of the nozzle body 101, and the other end is fixedly mounted on the side wall of the spray block 104;

[0046] The spray port 102 is formed with a liquid inlet channel 106 along the length direction of the nozzle body 101 , and an air inlet channel 107 communicating with the liquid inlet channel 106 is formed on the side wall of the nozzle body 101 .

[0047] As a preferred embodiment, a swirl thread 108 is formed on the inner sidewall of the liquid inlet channel 106. Liquid and gas enter the nozzle through the liquid inlet channel and the gas inlet channel respectively, form a swirl after passing through the liquid inlet channel provided with the swirl thread, and are sprayed out from the spray port. The water mist sprayed from the spray port passes through the spray block on the spray regulating assembly to form a dispersed water mist, which can reduce dust over a larger area.

[0048] As a preferred embodiment, it also includes a distribution box 56, which is electrically connected to the control host 51, the water vapor distributor 55, and the spray controller 541, and supplies power to the control host, the water vapor distributor, and the spray controller through a control cable 561.

[0049] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A dust suppression system for reducing coal transportation process, characterized in that: It includes a feeding belt conveyor and a spray device, wherein the spray device includes a control host, an air storage tank, a water storage tank, a plurality of terminal spray units, and a water-gas distributor for controlling the water-gas supply ratio in the air storage tank and the water storage tank; the air inlet of each terminal spray unit is respectively connected to the air outlet of the air storage tank, and the water inlet of each terminal spray unit is respectively connected to the water outlet of the water storage tank; Each of the terminal spray units includes a spray controller and a dry mist nozzle, wherein the input end of the dry mist nozzle is connected to the output end of the corresponding spray controller; the output end of the control host is connected to the water vapor distributor and the input end of the spray controller; The feeding belt conveyor is provided with a plurality of dry mist nozzles distributed along the length direction thereof.

2. The dust suppression system for reducing coal transportation according to claim 1 is characterized in that: The air outlet of the gas storage tank is provided with an air outlet pipe, the water outlet of the water storage tank is provided with a water outlet pipe, the air outlet pipe is provided with an air outlet solenoid valve, the water outlet pipe is provided with a water outlet solenoid valve, and the output end of the water-gas distributor is connected to the air outlet solenoid valve and the input end of the water outlet solenoid valve; The air inlet of the terminal spray unit is connected to the side of the air outlet solenoid valve on the air outlet pipe away from the air tank, and the water inlet of the terminal spray unit is connected to the side of the water outlet solenoid valve on the water outlet pipe away from the water tank.

3. The dust suppression system for reducing coal transportation according to claim 2, characterized in that: An air source filter is provided at the air outlet pipe of the air storage tank near the air outlet, and the air inlet of the air storage tank is connected to the air compressor.

4. The dust suppression system for reducing coal transportation according to claim 3 is characterized in that: The air outlet pipe is provided with an air pressure gauge and an air pressure regulating valve, and the water outlet pipe is provided with a water pressure gauge and a water pressure regulating valve. The output ends of the air pressure gauge and the water pressure gauge are connected to the input end of the water vapor distributor, and the input ends of the air pressure regulating valve and the water pressure regulating valve are connected to the input end of the water vapor distributor.

5. The dust suppression system for reducing coal transportation according to claim 1 is characterized in that: The feeding belt conveyor includes a frame, a feeding belt and a driving wheel for driving the feeding belt to move, the driving wheels are arranged at both ends inside the feeding belt, and a grooved upper roller group is installed on the frame along the length direction of the feeding belt to guide the upper belt of the feeding belt; and a plurality of dry mist nozzles are arranged on the frame along the length direction of the feeding belt.

6. The dust suppression system for reducing coal transportation according to claim 5, characterized in that: The dry mist nozzle is mounted on the frame via a universal joint assembly, and each universal joint assembly is connected to the water vapor distributor.

7. The dust suppression system for reducing coal transportation according to claim 6, characterized in that: The dry mist nozzle comprises a nozzle body, a spray port is formed at one end of the nozzle body, a spray adjustment assembly is provided on the spray port, the spray adjustment assembly comprises a spray block and a block support rod, one end of the block support rod is mounted on the side wall of the nozzle body, and the other end is fixedly mounted on the side wall of the spray block; The spray port is formed with a liquid inlet channel along the length direction of the nozzle body, and an air inlet channel communicating with the liquid inlet channel is formed on the side wall of the nozzle body.

8. The dust suppression system for reducing coal transportation according to claim 7, characterized in that: A swirl thread is formed on the inner side wall of the liquid inlet channel.

9. The dust suppression system for reducing coal transportation according to claim 5, characterized in that: The trough-type upper roller group includes a trough-type frame and three rollers installed on the trough-type frame. The three rollers include oblique rollers located on both sides and a horizontal roller located in the middle. A guide pressure plate for guiding the feeding belt is formed above the two oblique rollers, and the guide pressure plate is fixedly installed on the frame.

10. The dust suppression system for reducing coal transportation according to claim 5, characterized in that: A material guide chute is provided at the inlet of the feeding belt conveyor, and the material guide chute is installed on the frame.

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