Mini one-piece air cannon

Abstract

The utility model discloses a mini one-piece air cannon which comprises a plurality of groups of air cannon assemblies which are sequentially connected, each group of air cannon assembly comprises an air storage tank, a valve body assembly, a positive pressure quick discharge valve and a nozzle, and the valve body assembly is of a three-way structure and is respectively connected with the positive pressure quick discharge valve, the nozzle and the air storage tank; the adjacent gas storage tanks are connected through pressure-resistant corrugated pipes; the air inlet pipe a is sequentially provided with a manual ball valve a, a two-linkage piece a and a one-way valve a, the one-way valve a is connected to the end gland through a pressure-resistant hose and communicated with the air storage tank, the air inlet pipe b is sequentially provided with a manual ball valve b, a two-linkage piece b and a one-way valve b, then the air inlet pipe b is divided into a plurality of paths, and each path of air inlet pipe b is connected with an electromagnetic valve. Each electromagnetic valve is connected with the positive pressure quick discharge valve of each group of air cannon components through a flexible air pipe; each air cannon assembly is provided with an air storage tank, the air storage tanks are connected through pressure-resistant corrugated pipes, and the impact force of each air cannon assembly is basically the same.

Description

Technical Field

[0001] The utility model belongs to the technical field of air cannons, and particularly relates to a mini one-piece air cannon. Background Art

[0002] Among the current air cannon products, air cannons are limited by the volume of the air tank and are difficult to meet the application requirements for small spaces and places that require dense layout. As a result, it is impossible to install air cannons in small spaces and limited spaces, making it very difficult to clean the silos in these places. However, these places often urgently need to install air cannons to solve the problem of material blockage. The mini one-piece air cannon developed by our company has perfectly solved the application of silos and pipelines with limited space and places that require dense layout of air cannons, filling the gap in related aspects in China.

[0003] At present, the conventional system and working principle of air cannon products are as follows:

[0004] The air cannon valve body and the air tank are an integral whole. Compressed air is directly charged into the air tank of each air cannon from the air pipeline or charged into the tank through the quick discharge valve. When the air pressure in the air tank is the same as the air pressure in the air pipeline, a balance is reached, and the air cannon is in a waiting state. When the control system issues a working instruction, the two-position two-way solenoid valve in the system is actuated, causing the quick valve core in the quick discharge valve to open. Due to the opening of the quick valve core, a pressure difference is quickly formed on both sides of the closed piston in the air cannon, causing the closed piston to open. At this time, a large amount of compressed air in the air tank is ejected in a directional manner through the nozzle in an explosion state, thereby playing a role in breaking the arch and clearing the blockage. Utility Model Content

[0005] The utility model provides a mini one-piece air cannon to solve the problems in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A mini one-piece air cannon includes a plurality of groups of air cannon components connected in sequence.

[0008] Each set of air cannon assembly includes an air storage tank 6, a valve body assembly 2, a positive pressure quick exhaust valve 1 and a nozzle 4. The valve body assembly 2 is a three-way structure, wherein the two opposite ways are respectively connected to the positive pressure quick exhaust valve 1 and the nozzle 4, and the other way is connected to the air storage tank 6;

[0009] The air storage tanks 6 in two adjacent groups of air cannon assemblies are connected via a pressure-resistant bellows 7;

[0010] An end gland 5 is provided at the end of the first gas storage tank 6, and a pressure switch 25 is provided on the end gland 5;

[0011] The end of the last gas storage tank 6 is provided with an end gland 22, and a pressure gauge 20 and a safety valve 21 are arranged on the end gland 22.

[0012] A manual ball valve a11, a two-piece unit a10 and a check valve a9 are successively arranged on the air inlet pipe a12. The check valve a9 is connected to the end gland 5 through a pressure-resistant hose 8 and communicated with the gas storage tank 6.

[0013] A manual ball valve b18, a two-piece unit b17 and a check valve b16 are successively arranged on the air inlet pipe b19. Then the air inlet pipe b19 is divided into several paths, and each path of the air inlet pipe b19 is connected to an electromagnetic valve 23. Each electromagnetic valve 23 is connected to the positive pressure quick exhaust valve 1 of each group of air cannon assemblies through a flexible air pipe 24.

[0014] The electromagnetic valve 23 is connected to the electric control box 14 through a control cable 13, and the electric control box 14 is also connected to a pressure switch 25 through the control cable 13.

[0015] Further, each group of air cannon assemblies further includes a double joint flange 3, and the valve body assembly 2 and the nozzle 4 are connected through the double joint flange 3.

[0016] Further, the valve body assembly 2 includes a tee 207. A piston seat 208 is sleeved in two opposite passages of the tee 207. A piston 206 and a spring 204 are successively arranged outside the piston seat 208. A dry bearing 205 is sleeved outside the piston 206 and the spring 204. A gland 202 is arranged at the end of the tee 207 at the spring 204 end. The two opposite passages of the tee 207 are respectively connected to the positive pressure quick exhaust valve 1 and the double joint flange 3.

[0017] Further, the positive pressure quick exhaust valve 1 and the tee 207 are connected through a bolt assembly a201, and the double joint flange 3 and the tee 207 are connected through a bolt assembly b2010.

[0018] Further, a sealing ring a203 is arranged in the gland 202, and a sealing ring b209 is arranged between the tee 207 and the double joint flange 3.

[0019] Further, the gas storage tank 6 includes a movable rotary flange 601, and the movable rotary flange 601 of the gas storage tank 6 is connected to the valve body assembly 2.

[0020] Further, the electric control box 14 is externally connected with a power cord 15.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] The utility model greatly broadens the application of the air cannon in narrow spaces or occasions where dense arrangement is required compared with traditional air cannons. Each group of air cannon components of the utility model has a gas storage tank, and the gas storage tanks are connected by pressure-resistant bellows. The advantage of such installation is that the impact force of each group of air cannon components is basically the same, and the gas storage tanks connected by pressure-resistant bellows can supplement each other's gas volume, so that under the same impact force requirement, the capacity of each gas storage tank can be appropriately reduced. The reduction of the gas storage tank capacity makes the air cannon more convenient to install in narrow spaces. Brief Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of the utility model;

[0024] Figure 2 is an exploded view of the positive pressure quick exhaust valve of the utility model;

[0025] Figure 3 is an exploded view of the valve body assembly of the utility model;

[0026] Figure 4 is a schematic structural diagram of the gas storage tank of the utility model;

[0027] Figure 5 is another schematic structural diagram of the utility model;

[0028] Figure 6 is another schematic structural diagram of the utility model;

[0029] Figure 7 is another schematic structural diagram of the utility model;

[0030] Figure 8 is another schematic structural diagram of the utility model;

[0031] Figure 9 is another schematic structural diagram of the utility model;

[0032] Figure 10 is a usage state diagram of the utility model on a stepped furnace;

[0033] Wherein: 1 - Positive pressure quick exhaust valve, 2 - Valve body assembly, 201 - Bolt assembly a, 202 - gland, 203 - Sealing ring a, 204 - Spring, 205 - Dry bearing, 206 - Piston, 207 - Tee, 208 - Piston seat, 209 - Sealing ring b, 2010 - Bolt assembly b, 3 - Double flange, 4 - Nozzle, 5 - End gland, 6 - Gas storage tank, 601 - Movable rotating flange, 7 - Pressure-resistant corrugated pipe, 8 - Pressure-resistant hose, 9 - Check valve a, 10 - Two-piece a, 11 - Manual ball valve a, 12 - Inlet pipe a, 13 - Control cable, 14 - Electric control box, 15 - Power cable, 16 - Check valve b, 17 - Two-piece b, 18 - Manual ball valve b, 19 - Inlet pipe b, 20 - Pressure gauge, 21 - Safety valve, 22 - End gland, 23 - Solenoid valve, 24 - Flexible air pipe a, 25 - Pressure switch. Detailed implementation mode

[0034] The present utility model will be further described below in conjunction with embodiments. Embodiment

[0035] As Figure 1-9 shown, a mini combined air cannon includes a plurality of gas storage tanks connected in series and integrates a plurality of valve body assemblies. Compressed air is sequentially filled into the gas storage tanks of each air cannon through a manual ball valve (two-way ball valve), a two-piece, a check valve, and a pressure-resistant hose in the working air circuit. When the air pressure in the gas storage tank is the same as that in the pipeline, it reaches equilibrium. At this time, all the nozzles of the air cannon are in a waiting state for work; when the control system issues a work instruction, the specified solenoid valve in the system acts, causing the specified positive pressure quick exhaust valve to act. After the positive pressure quick exhaust valve acts, the piston of the corresponding valve body assembly of the air cannon opens, and the air cannon explodes, thus playing a role in fixed-point arch breaking and blockage clearing; after the control box cuts off the power supply to the corresponding solenoid valve, the gas storage tank continues to be inflated, waiting for the next cycle.

[0036] Specifically, a mini combined air cannon includes several groups of air cannon components connected in sequence.

[0037] Each air cannon assembly includes an air storage tank 6, a valve body assembly 2, a positive pressure quick exhaust valve 1, and a nozzle 4. The valve body assembly 2 is a three-way structure, where two opposite passages are respectively connected to the positive pressure quick exhaust valve 1 and the nozzle 4, and the other passage is connected to the air storage tank 6; the air storage tanks 6 in two adjacent air cannon assemblies are connected through a pressure-resistant corrugated pipe 7; an end cover 5 is provided at the end of the first air storage tank 6, and a pressure switch 25 is provided on the end cover 5; an end cover 22 is provided at the end of the last air storage tank 6, and a pressure gauge 20 and a safety valve 21 are provided on the end cover 22. A manual ball valve a11, a two-piece a10, and a check valve a9 are sequentially provided on the air inlet pipe a12. The check valve a9 is connected to the end cover 5 through a pressure-resistant hose 8 and communicates with the air storage tank 6. A manual ball valve b18, a two-piece b17, and a check valve b16 are sequentially provided on the air inlet pipe b19. Then the air inlet pipe b19 is divided into several paths, and each path of the air inlet pipe b19 is connected to an electromagnetic valve 23. Each electromagnetic valve 23 is connected to the positive pressure quick exhaust valve 1 of each air cannon assembly through a flexible hose 24. The electromagnetic valve 23 is connected to the electric control box 14 through a control cable 13. The electric control box 14 is also connected to the pressure switch 25 through the control cable 13, and the electric control box 14 is externally connected with a power supply line 15.

[0038] As a preferred solution, the positive pressure quick exhaust valve 1 has been disclosed in the patent application No. 202323115383.0, titled "A Quick Release Valve for Air Cannon", and will not be elaborated here. It should be noted that the service life of the present utility model is improved compared with traditional air cannons. The rubber diaphragm of the quick exhaust valve used in traditional air cannons is easily damaged during reciprocating motion, while the positive pressure quick exhaust valve in the present utility model uses a metal piston, greatly improving the service life of the air cannon.

[0039] As a preferred solution, each air cannon assembly further includes a double flange 3, and the valve body assembly 2 and the nozzle 4 are connected through the double flange 3.

[0040] As a preferred solution, the valve body assembly 2 includes a three-way 207. Piston seats 208 are sleeved in two opposite passages inside the three-way 207. A piston 206 and a spring 204 are sequentially arranged outside the piston seats 208. A dry bearing 205 is sleeved outside the piston 206 and the spring 204. A gland 202 is provided at the end of the three-way 207 at the spring 204 end. Two opposite passages of the three-way 207 are respectively connected to the positive pressure quick exhaust valve 1 and the double flange 3.

[0041] As a preferred solution, the positive pressure quick exhaust valve 1 is connected to the three-way 207 through a bolt assembly a201, and the double flange 3 is connected to the three-way 207 through a bolt assembly b2010.

[0042] As a preferred solution, a sealing ring a203 is arranged inside the gland 202, and a sealing ring b209 is arranged between the tee joint 207 and the double flange 3.

[0043] As a preferred solution, the gas storage tank 6 includes a movable rotary flange 601, and the movable rotary flange 601 of the gas storage tank 6 is connected to the valve body assembly 2.

[0044] As a preferred solution, both the bolt assembly a201 and the bolt assembly b2010 are prior arts and may include structures such as bolts, nuts, washers, etc., as long as they are for detachable connection.

[0045] The working principle of a mini combined air cannon of the present utility model:

[0046] Open the manual ball valve a11, and the working air source sequentially passes through the air inlet pipe a12, the ball valve a11, the air filter regulator a10, the one-way valve a9, the pressure-resistant hose 8, and is filled into the gas storage tank 6. Open the manual ball valve b18, and the control air source sequentially passes through the air inlet pipe b19, the ball valve b18, the air filter regulator b17, the one-way valve b16, and the solenoid valve 23 and is filled into the positive pressure quick exhaust valve 1 for standby. When the gas storage tank 6 is inflated to the rated pressure, the pressure switch 25 sends a full signal to the control box 14 through the control cable 13, and at this time, the integrated air cannon is in a ready state. When the control box 14 is driven, the control box 14 commands one of the specified solenoid valves 23 to act through the control cable 13. At this time, the control air source passes through the A port of the specified solenoid valve, and then the control air source reaches the specified positive pressure quick exhaust valve 1 through the flexible hose 24. The positive pressure quick exhaust valve 1 acts, and the corresponding air cannon valve body assembly 2 explodes. At this time, all the compressed air in the gas storage tank 6 sequentially passes through the valve body assembly 2, the double flange 3, and the nozzle 4, and quickly rushes out, achieving the effect of removing material blockage and assisting in flow. After firing, the corresponding solenoid valve 23 is powered off, and the residual control gas of the corresponding positive pressure quick exhaust valve 1 reaches the A port of the corresponding solenoid valve through the corresponding flexible hose 24, and then is discharged through the R port of the corresponding solenoid valve 23. At this time, the working air source continues to inflate until the pressure switch 25 sends a full signal to the control box 14 through the control cable 13 again, and the whole system is in a ready state again. Waiting for the next working command. Embodiment

[0047] In this embodiment, 3 groups of air cannon assemblies are preferably selected, and the assembly steps of a mini combined air cannon are as follows:

[0048] Step 1: Install the main components. Fix 3 nozzles 4 at the specified positions respectively, connect 3 double flanges 3 to the nozzles 4 with bolts respectively, connect 3 valve body assemblies 2 to the double flanges 3 with bolts respectively, connect 3 positive pressure quick exhaust valves 1 to the valve body assemblies 2 with bolts respectively, connect 3 gas storage tanks 6 to the valve body assemblies 2 with bolts respectively. Then, connect 2 pressure-resistant bellows 7 between the 3 gas storage tanks 6 with bolts in sequence, connect the end gland 5 to the end gas storage tank 6 with bolts, and connect the end gland 22 to the end gas storage tank 6 with bolts.

[0049] Step 2: Install the pressure gauge 20 and the safety valve 21 at the end gas storage tank 6, and install the pressure switch 25 at the end gland 5.

[0050] Step 3: Connect the pressure-resistant hose 8 to the end gas storage tank, and connect the pressure-resistant hose 8, check valve a9, air filter regulator a10, manual ball valve a11, and inlet pipe a12 in series in sequence.

[0051] Step 4: Connect the A ports of 3 solenoid valves 23 to the air inlets of the positive pressure quick exhaust valves 1 with flexible hoses 24 respectively, connect the check valve b16 to the common air inlet end of the solenoid valves 23, and connect the check valve b9, air filter regulator b10, manual ball valve b11, and inlet pipe b12 in series in sequence.

[0052] Step 5: Connect the solenoid valves 23 and the pressure switch 25 to the control box 14 with control cables 13 respectively, and connect the control box 14 to the power supply through the power cable 15.

[0053] The utility model has the following advantages:

[0054] 1. Compared with the traditional air cannon, the utility model greatly broadens the application of the air cannon in narrow spaces or occasions where dense layout is required. Each group of air cannon components of the utility model has a gas storage tank, and the gas storage tanks are connected by pressure-resistant bellows. The advantage of such installation is that the impact force of each group of air cannon components is basically the same, and the gas storage tanks connected by pressure-resistant bellows can supplement each other's gas volume. Under the same impact force requirement, the capacity of each gas storage tank can be appropriately reduced, and the reduction of the gas storage tank capacity makes the air cannon more convenient to install in narrow spaces.

[0055] 2. If a certain group of air cannon components (gun head) fails, the single valve body (gun head) can be cut off at any time for maintenance, without affecting the normal use of other connected air cannon components.

[0056] 3. The gas storage tanks of the utility model are connected by soft and telescopic pressure-resistant bellows, which greatly increases the flexibility of the air cannon installation under various working conditions. At the same time, it greatly increases the convenience of maintenance.

[0057] 4. The connection between the gas storage tank and the valve body assembly of the present utility model uses a movable rotating flange, enabling the gas storage tank to be installed at any angle of 360 degrees, greatly increasing the flexibility of installation in special sites.

[0058] 5. The working gas source and the control gas source filled into the gas storage tank of the present utility model are separated and do not interfere with each other. Compared with the traditional single-channel gas source air cannon, it will not affect the unstable operation of the control actuator due to low gas source pressure.

[0059] 6. The present utility model greatly improves the safety compared with the traditional air cannon. When the control gas source is disconnected, the air cannon cannot explode, while in the traditional air cannon system, even if the gas source is disconnected, the air cannon can still explode, greatly increasing the safety risk of the staff during the maintenance of the air cannon.

[0060] 7. The present utility model adds pressure feedback. When the gas storage tank is inflated to the pressure set value of the pressure switch, the control box will receive the signal that the gas storage tank is full. At the same time, when the air cannon explodes, the pressure switch will also transmit the pressure loss signal to the control box to confirm the actual operation situation of the air cannon. This greatly facilitates the staff to monitor the working state of the air cannon. Embodiment

[0061] As Figure 10 shown, the usage state diagram of the mini-connected air cannon of the present utility model on the step furnace

[0062] The pre-combustion furnace of the step furnace is generally installed on the side of the decomposition furnace in the cement plant. Through its special design and configuration, the step pre-combustion furnace realizes the efficient and harmless treatment of municipal solid waste, medical waste, municipal sludge, industrial waste, and hazardous waste. This device provides a pre-combustion platform and combustion steps, enabling the material to be pre-heated and burned on the pre-combustion platform, thereby improving the combustion efficiency and waste treatment efficiency. The step furnace requires intensive installation of air cannons and has limited installation space. The mini-connected air cannon in the present utility model demonstrates extremely high advantages.

[0063] The present utility model relates to a special device for preventing and removing material arching, sticking bin blockage, etc. in various types of bins, hoppers, cement preheater kilns, pipe bifurcations, mine chutes, and chutes based on the air explosion principle. It is widely used in industries such as cement, metallurgy, chemical industry, coal, power, mining, coking, and steel.

[0064] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A mini combined air cannon, characterized in that, It includes several groups of sequentially connected air cannon components. Each group of air cannon components includes an air storage tank, a valve body assembly, a positive pressure quick exhaust valve, and a nozzle. The valve body assembly is a three-way structure, and the two opposite passages are respectively connected to the positive pressure quick exhaust valve and the nozzle, and the other passage is connected to the air storage tank. The air storage tanks in adjacent groups of air cannon components are connected by a pressure-resistant corrugated pipe. An end gland is provided at the end of the first air storage tank, and a pressure switch is provided on the end gland. A terminal gland is provided at the end of the last air storage tank, and a pressure gauge and a safety valve are provided on the terminal gland. A manual ball valve a, a two-piece a, and a check valve a are sequentially provided on the air inlet pipe a. The check valve a is connected to the end gland through a pressure-resistant hose and communicates with the air storage tank. A manual ball valve b, a two-piece b, and a check valve b are sequentially provided on the air inlet pipe b. Then the air inlet pipe b is divided into several paths, and each path of the air inlet pipe b is connected to an electromagnetic valve. Each electromagnetic valve is connected to the positive pressure quick exhaust valve of each group of air cannon components through a flexible hose. The electromagnetic valve is connected to the electric control box through a control cable, and the electric control box is also connected to the pressure switch through a control cable.

2. The mini-connected air cannon according to claim 1, characterized in that Each group of air cannon components further includes a double flange, and the valve body assembly and the nozzle are connected through the double flange.

3. The mini-connected air cannon according to claim 2, characterized in that The valve body assembly includes a three-way joint. Piston seats are sleeved in the two opposite passages in the three-way joint. A piston and a spring are sequentially arranged outside the piston seats. A dry bearing is sleeved outside the piston and the spring. A gland is provided at the end of the three-way joint where the spring is located. The two opposite passages of the three-way joint are respectively connected to the positive pressure quick exhaust valve and the double flange.

4. The mini-connected air cannon according to claim 3, characterized in that The positive pressure quick exhaust valve is connected to the three-way joint through a bolt assembly a, and the double flange is connected to the three-way joint through a bolt assembly b.

5. The mini-connected air cannon according to claim 3, characterized in that A sealing ring a is provided in the gland, and a sealing ring b is provided between the three-way joint and the double flange.

6. The mini-connected air cannon according to claim 1, characterized in that The air storage tank includes a movable rotating flange, and the movable rotating flange of the air storage tank is connected to the valve body assembly.

7. The mini-connected air cannon according to claim 1, characterized in that The electric control box is externally connected with a power cord.

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