A pneumatic device for preparing a bubble

Abstract

The utility model discloses a kind of pneumatic devices for preparing bubble, it includes liquid supply module, the liquid supply module includes bubble solution tank, pneumatic diaphragm pump and workstation bottom tank;The bubble solution tank is used to store bubble solution, the pneumatic diaphragm pump is used to pump into workstation bottom tank with bubble solution, the workstation bottom tank is used to accommodate bubble solution and gas;Gas supply module, the gas supply module includes workstation cover tank and gas connection pipe;The workstation cover tank is used to accommodate gas, the gas connection pipe is used to transmit gas into pneumatic device;Output module, the output module includes transmission pipe and bubble generator;The transmission pipe is used to transmit bubble solution and gas into bubble generator, the bubble generator is used to generate bubble.The utility model's pneumatic device uses compressed gas as only power, without implementing explosion-proof measure, while only needing to adjust valve can control the operation of device, especially suitable for being applied to coal mine underground and needing explosion-proof operating place.

Description

Technical Field

[0001] This utility model relates to the field of mining technology, specifically to a pneumatic device for preparing bubbles. Background Technology

[0002] Minerals are essential resources for people's lives and production. However, the mining, crushing, transfer, and processing of mineral raw materials generate a large amount of dust.

[0003] The raw ore mined in open-pit mines needs to be crushed and processed. The atmospheric pollution caused by dust dispersion has seriously affected the quality of life of residents near the mines. Dust accumulation on roads and dust raised by passing vehicles not only pollute the air environment but also affect road visibility and pose a safety threat to vehicles. Dust control is now urgent.

[0004] Coal mining operations mostly take place in enclosed underground spaces, and large amounts of dust are generated during production activities such as fully mechanized mining and tunneling. Currently, the main methods for suppressing dust at underground work sites are negative pressure ventilation dust collectors and water spraying. However, because underground work sites are difficult to enclose, and tunneling faces are wide with large air volumes, negative pressure ventilation dust collection is ineffective. Water spraying is also ineffective at wetting fine dust particles; in fact, the dynamic force of the water spray can cause the dust to spread further, resulting in a larger pollution area. Therefore, how to quickly control dust in fully mechanized mining and tunneling operations is a significant technical challenge for the entire industry.

[0005] Dust control equipment is generally classified into pneumatic mechanical equipment and electric modern equipment based on its power source and control method. From the product's perspective, achieving inherent safety for electrical equipment, such as exterior protection and intrinsically safe components, leads to increased equipment size and weight, making it inconvenient to transport, fix, and place for use in coal mines and other application sites. At the same time, pneumatic mechanical dust removal equipment does not require a "coal mine safety certificate," which greatly facilitates the use of pneumatic equipment for dust control at underground work sites, making pneumaticization of equipment the first choice for equipment developers.

[0006] Therefore, a pneumatic application device has been developed that can circumvent underground explosion protection requirements and can prepare foam solutions into foams for suppressing mine dust. Utility Model Content

[0007] Purpose of the invention: In view of the deficiencies of the prior art, the purpose of this utility model is to provide a pneumatic device that can circumvent the explosion-proof requirements of underground wells and can be used to prepare bubbles.

[0008] Technical solution: This utility model provides a pneumatic device for preparing bubbles, comprising: The liquid supply module includes a bubble solution tank, a pneumatic diaphragm pump, and a workstation bottom tank; the bubble solution tank is used to store bubble solution, the pneumatic diaphragm pump is used to pump the bubble solution into the workstation bottom tank, and the workstation bottom tank is used to contain bubble solution and gas; A gas supply module, comprising a workstation cover canister and a gas inlet pipe; the workstation cover canister is used to contain gas, and the gas inlet pipe is used to transmit gas into the pneumatic device; The output module includes a transmission tube and a bubble generator; the transmission tube is used to transmit bubble solution and gas into the bubble generator, and the bubble generator is used to generate bubbles.

[0009] Furthermore, the workstation cover tank and the workstation bottom tank are sealed together by a sealing ring and fixing screws to form two closed spaces. The workstation cover tank contains gas, and the workstation bottom tank contains gas and foam solution.

[0010] The pneumatic device provided by this utility model, after its air inlet pipe is connected to external compressed gas, allows the driving air pressure for the pneumatic diaphragm pump to be set by adjusting the outlet air pressure of the first pressure reducing valve. Since the energy loss of the pneumatic diaphragm pump from the inlet to the outlet is small and negligible, as the amount of liquid input into the workstation tank increases, the gas in the workstation tank is compressed. When the air pressure reaches the same level as the supply pressure to the pneumatic diaphragm pump, the pump stops working due to air stagnation. However, when the liquid in the workstation tank is supplied to the bubble generator via one-way valves, the gas volume in the workstation tank increases as the amount of liquid decreases, causing a drop in air pressure. The pneumatic diaphragm pump, which stopped working due to air stagnation, restarts to replenish the liquid in the workstation tank.

[0011] Ignoring the influence of temperature changes, the relationship between the gas pressure and the liquid pressure in the workstation's bottom tank can be expressed by equation (1) as follows: (P0+1)V0=(P1+1)V1(1) V1 = V0 - V2 (2) In the formula: P0 is the initial gauge pressure inside the workstation bottom tank, atm; V0 is the initial volume inside the workstation bottom tank, m³. 3 P1 is the gauge pressure of the compressed gas after liquid is introduced into the bottom tank of the workstation, in atm; V1 is the volume of the compressed gas after liquid is introduced into the bottom tank of the workstation, in m³. 3 V2 -- Input the liquid volume in the bottom tank of the workstation, in meters. 3 .

[0012] P1=[(P0+1)V0 / (V0-V2)]-1(3) Therefore, the greater the amount of liquid input into the workstation's bottom tank, the greater the gauge pressure inside the tank. By conserving the mass of the gas inside the tank, the gas pressure within the bottom tank can be stably controlled, which in turn allows for stable control of the pressure at which liquid is pumped out. Furthermore, by adjusting the gas pressure at the outlet of the first pressure reducing valve, the outlet pressure of the pneumatic diaphragm pump and the gas pressure inside the bottom tank can be adjusted, thus controlling the pressure at which liquid is pumped out.

[0013] Furthermore, the liquid supply module also includes a first valve and a second valve for connecting the pneumatic diaphragm pump, the bubble solution tank, and the workstation bottom tank; The pneumatic diaphragm pump includes an inlet end and an outlet end. The inlet end of the pneumatic diaphragm pump is connected to the bubble solution tank through a first valve; the outlet end of the pneumatic diaphragm pump is connected to the bottom tank of the workstation through a second valve.

[0014] Furthermore, the liquid supply module also includes a level gauge for monitoring the solution level in the bottom tank of the workstation, and a first pressure gauge for monitoring the gas pressure in the bottom tank of the workstation; The level gauge is connected to the middle of the outer side of the bottom tank of the workstation via a flange, and the first pressure gauge is located on the upper part of the outer side of the bottom tank of the workstation.

[0015] Furthermore, the gas supply module also includes a second pressure gauge for monitoring the gas pressure of the workstation cover tank and a pressure relief valve for adjusting the pressure of the workstation cover tank; The second pressure gauge and pressure relief valve are located on the top of the outer side of the workstation cover tank.

[0016] Furthermore, the output module includes at least one bubble generator; the bubble generator includes an air inlet, a liquid inlet, and an output outlet; The output module also includes a first check valve and a second check valve for controlling the input of gas and bubble solution.

[0017] Furthermore, the bubble generator is welded to the bottom of the workstation tank, the output port is located outside the workstation tank and connected to the pneumatic valve, the air inlet and liquid inlet are located inside the tank and welded to the top of the workstation tank through a transmission pipe, and each has an external thread. The external thread of the air inlet is connected to the first one-way valve; The external thread of the liquid inlet is connected to the second one-way valve, and the second one-way valve extends to the bottom of the workstation tank through a transmission pipe.

[0018] Furthermore, one end of the air inlet pipe is connected to external compressed gas and is divided into three airflows through the third valve; one of them is connected to the pneumatic diaphragm pump through the fourth valve and the first pressure reducing valve, one of them is connected to the workstation cover tank through the fifth valve and the second pressure reducing valve, and one of them is connected to the bubble generator through the sixth valve.

[0019] Furthermore, the workstation bottom tank is equipped with a first pretreatment port for adjusting the liquid level and air pressure and is connected to a seventh valve; The workstation cover tank is equipped with a second pretreatment port for regulating air pressure and is connected to an eighth valve; The first and second pretreatment ports are connected to the outside via pipelines and are equipped with a ninth valve.

[0020] Furthermore, the first pretreatment port is located at two-thirds to three-quarters of the distance from the bottom of the bottom tank of the workstation, and the second pretreatment port is located at the bottom of the top tank of the workstation.

[0021] The pneumatic device of this invention features a pretreatment port on its workstation cover and bottom tanks. During commissioning or if the equipment has been unused for an extended period and slow air leakage occurs in the workstation cover and bottom tanks, the liquid level may become too high upon reactivation. Therefore, if the liquid level in the bottom tank is found to be too high, the foam solution can be drained by opening the seventh and ninth valves of the first pretreatment port. Then, the ninth valve can be closed, and the seventh and eighth valves can be opened to inject suitable air pressure into the bottom tank, ensuring stable operation. This structure also allows for pressure reduction by opening the eighth and ninth valves if high pressure occurs in the workstation cover tank due to misoperation, ensuring stable operation of the equipment.

[0022] Beneficial effects: (1) The pneumatic device provided by this utility model uses compressed gas as the only power source, and there is no need to implement explosion-proof measures. At the same time, the device will automatically open when the third valve of the gas inlet pipe is adjusted, and will automatically close when the third valve is closed. The operation process is simple and convenient, and the device is easy to assemble, transport and fix. It can avoid the use of large transportation equipment and is particularly suitable for use in coal mines and workplaces that require explosion protection.

[0023] (2) In the pneumatic device provided by this utility model, since the one-way valve is a vulnerable part, it can be replaced at any time when aging or reliability is reduced.

[0024] (3) The pneumatic device provided by this utility model is equipped with a pretreatment port, which can quickly and easily adjust the liquid level and air pressure of the bottom tank and the top tank of the workstation through the valve. The structure is simple and stable, which makes it easy to ensure the stable operation of the device.

[0025] (4) In the pneumatic device provided by this utility model, according to the pressure requirements of the bubble generator for air and liquid inlet, it is only necessary to adjust the outlet pressure of the first pressure reducing valve and the second pressure reducing valve respectively to adjust the air pressure in the workstation cover tank, thereby achieving the requirement of producing bubbles of different qualities. The operation is simple and the device is stable and durable.

[0026] (5) The pneumatic device provided by this utility model sets the vulnerable parts inside the workstation, which can reduce equipment wear in the harsh environment of coal mines. At the same time, the workstation is detachable and easy to open, and the vulnerable parts can be replaced quickly, reducing maintenance costs. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the pneumatic device used for preparing bubbles according to an embodiment of the present invention; Among them, 1-bubble solution tank; 2-first valve; 3-pneumatic diaphragm pump; 4-first pressure reducing valve; 5-second valve; 6-level gauge; 7-flange; 8-fixing screw; 9-workstation cover tank; 10-second pressure gauge; 11-pressure relief valve; 12-second pressure reducing valve; 13-first bubble generator; 14-second bubble generator; 15-third bubble generator; 16-fourth bubble generator; 17-first check valve A; 19-first check valve B; 22-first check valve C; 24-first check valve D; 18-then... 20-Second check valve A; 21-Second check valve B; 23-Second check valve C; 24-Second check valve D; 25-Eighth valve; 26-First pressure gauge; 27-Seventh valve; 28-Ninth valve; 29-Workstation bottom tank; 30-Fourth valve; 31-Sixth valve A; 32-Sixth valve B; 33-Sixth valve C; 34-Sixth valve D; 35-Fifth valve; 36-First pneumatic valve; 37-Second pneumatic valve; 38-Third pneumatic valve; 39-Fourth pneumatic valve; 40-Third valve; 41-Air inlet pipe. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] The purpose of this invention is to provide a pneumatic device for preparing bubbles, such as... Figure 1 As shown, it includes a liquid supply module, a gas supply module, and an output module.

[0031] The liquid supply module includes a bubble solution tank 1, a pneumatic diaphragm pump 3, and a workstation bottom tank 29. The bubble solution tank 1 is used to store bubble solution, the pneumatic diaphragm pump 3 is used to pump the bubble solution into the workstation bottom tank 29, and the workstation bottom tank 29 is used to contain bubble solution and gas. The gas supply module includes a workstation cover tank 9 and a gas inlet pipe 41; the workstation cover tank 9 is used to contain gas, and the gas inlet pipe 41 is used to transmit gas into the pneumatic device. The output module includes a transmission tube and a first bubble generator 13, a second bubble generator 14, a third bubble generator 15, and a fourth bubble generator 16; the transmission tube is used to transmit bubble solution and gas into the bubble generator, and the bubble generator is used to generate bubbles.

[0032] As one possible example, the workstation cover tank 9 and the workstation bottom tank 29 are connected by a sealing ring and a fixing screw 8 to form two closed spaces. The workstation cover tank 9 is sealed to contain gas, and the workstation bottom tank 29 is sealed to contain gas and foam solution.

[0033] As a possible example, the pneumatic diaphragm pump 3, the bubble solution tank 1, and the workstation bottom tank 29 in the liquid supply module can be connected by a first valve 2 and a second valve 5; the pneumatic diaphragm pump 3 includes an inlet end and an outlet end, the inlet end of the pneumatic diaphragm pump is connected to the bubble solution tank 1 through the first valve 2; the outlet end of the pneumatic diaphragm pump 3 is connected to the workstation bottom tank 29 through the second valve 5.

[0034] In order to monitor the height and pressure of the solution in the bottom tank of the workstation, the liquid supply module also includes a level gauge 6 and a first pressure gauge 26; the level gauge 6 is connected to the middle of the outer side of the bottom tank 29 of the workstation via a flange 7, and the first pressure gauge 26 is located on the upper part of the outer side of the bottom tank 29 of the workstation.

[0035] In order to monitor and regulate the air pressure of the workstation cover tank 9, the air supply module also includes a second pressure gauge 10 and a pressure relief valve 11; the second pressure gauge 10 and the pressure relief valve 11 are located on the top of the outer side of the workstation cover tank 9.

[0036] As a possible example, the output module includes a first bubble generator 13, a second bubble generator 14, a third bubble generator 15, and a fourth bubble generator 16; the bubble generator includes an air inlet, a liquid inlet, and an output port; the output module also includes a first one-way valve A17, a first one-way valve B19, a first one-way valve C22, a first one-way valve D24, and a second one-way valve A18, a second one-way valve B20, a second one-way valve C21, and a second one-way valve D23 for controlling the input of gas and bubble solution.

[0037] Furthermore, the first bubble generator 13, the second bubble generator 14, the third bubble generator 15, and the fourth bubble generator 16 are welded to the bottom of the workstation bottom tank 29, with the output port located outside the workstation bottom tank 29 and connected to the first pneumatic valve 36, the second pneumatic valve 37, the third pneumatic valve 38, and the fourth pneumatic valve 39, respectively. The air inlet and liquid inlet are located inside the tank and welded to the top of the workstation bottom tank 29 through a transmission pipe, each with an external thread. The external thread of the air inlet is connected to the first one-way valve A17, the first one-way valve B19, the first one-way valve C22, and the first one-way valve D24. The external thread of the liquid inlet is connected to the second one-way valve A18, the second one-way valve B20, the second one-way valve C21, and the second one-way valve D23, and the second one-way valves A18, B20, C21, and D23 are connected to the bottom of the workstation bottom tank through transmission pipes.

[0038] Furthermore, in order to transmit compressed gas into the pneumatic device, one end of the air inlet pipe 41 in the air supply module is connected to the external compressed gas, and three airflows are split through the third valve 40; one of them is connected to the pneumatic diaphragm pump 3 through the fourth valve 30 and the first pressure reducing valve 4, another is connected to the workstation cover tank 9 through the fifth valve 35 and the second pressure reducing valve 12, and the third is connected to the first bubble generator 13, the second bubble generator 14, the third bubble generator 15, and the fourth bubble generator 16 through the sixth valves A31, B32, C33, and D34.

[0039] As a possible example, in order to adjust the liquid level and air pressure of the workstation bottom tank 29, the workstation bottom tank 29 is provided with a first pretreatment port and connected to a seventh valve 27; in order to adjust the air pressure of the workstation cover tank 9, the workstation cover tank is provided with a second pretreatment port and connected to an eighth valve 25; the first pretreatment port and the second pretreatment port are connected to the outside through pipelines and are provided with a ninth valve 28.

[0040] Furthermore, the first pretreatment port is located at two-thirds to three-quarters of the distance from the bottom of the bottom tank 29 of the workstation, and the second pretreatment port is located at the bottom of the top tank 9 of the workstation.

[0041] When the liquid level in the bottom tank of the workstation is too high, the seventh valve 27 and the ninth valve 28 can be opened to remove the excess foam solution and ensure the stable operation of the device. When the air pressure in the workstation cover tank is insufficient, the eighth valve 25 and the ninth valve 28 can be opened, and compressed gas can be introduced into the workstation cover tank through the air inlet pipe 41 to increase the air pressure; when the air pressure is too high, the same operation can be used to reduce the pressure to ensure the stable operation of the device.

[0042] The working principle of the pneumatic device of this utility model is as follows: After the air inlet pipe 41 is connected to the external compressed gas, and after adjusting the outlet pressure of the first pressure reducing valve 4 and the second pressure reducing valve 9 of the pneumatic diaphragm pump 3 and the workstation cover tank 9, simultaneously open the valves of the air inlet pipe 41, the pneumatic diaphragm pump 3, and the first bubble generator 13, the second bubble generator 14, the third bubble generator 15, and the fourth bubble generator 16. The pneumatic diaphragm pump 3 starts to work, and the first pneumatic valve 36, the second pneumatic valve 37, the third pneumatic valve 38, and the fourth pneumatic valve 39 open, and the equipment begins to work stably. The compressed gas in the workstation cover tank 9 flows through the first one-way valve A17, the first one-way valve B19, the first one-way valve C22, and the first one-way valve D24 to the first bubble generator 13, the second bubble generator 14, the third bubble generator 15, and the fourth bubble generator, respectively. 16. Gas supply: The bubble solution in the bottom tank 29 of the workstation is supplied to the first bubble generator 13, the second bubble generator 14, the third bubble generator 15, and the fourth bubble generator 16 through the infusion pipe via the second one-way valve A18, the second one-way valve B20, the second one-way valve C21, and the second one-way valve D23, respectively. Then, the bubbles are output through the outlets of the first bubble generator 13, the second bubble generator 14, the third bubble generator 15, and the fourth bubble generator 16 via the sixth valve A31, the sixth valve B32, the sixth valve C33, the sixth valve D34, the first pneumatic valve 36, the second pneumatic valve 37, the third pneumatic valve 38, and the fourth pneumatic valve 39. When the third valve 40 of the gas inlet pipe is closed, the pneumatic diaphragm pump 3 stops working, the pneumatic valves close, and the equipment stops working.

[0043] This device is powered by compressed gas and controlled by valves, completely avoiding the use of electrical components. It can be safely used in explosive locations in coal mines to generate bubbles and reduce dust generation. Furthermore, the pneumatic structure makes the assembly, handling, and operation of the device simple, making it particularly suitable for dust removal work in coal mines.

[0044] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A pneumatic device for preparing bubbles, characterized in that, include: The liquid supply module includes a bubble solution tank, a pneumatic diaphragm pump, and a workstation bottom tank. The foam solution tank is used to store foam solution, and the pneumatic diaphragm pump is used to pump the foam solution into the workstation bottom tank, which is used to contain foam solution and gas. A gas supply module, comprising a workstation cover canister and a gas inlet pipe; the workstation cover canister is used to contain gas, and the gas inlet pipe is used to transmit gas into the pneumatic device; The output module includes a transmission tube and a bubble generator; the transmission tube is used to transmit bubble solution and gas into the bubble generator, and the bubble generator is used to generate bubbles.

2. The pneumatic device for preparing bubbles according to claim 1, characterized in that, The workstation cover tank and the workstation bottom tank are connected by a sealing ring and fixing screws to form two closed spaces. The workstation cover tank contains gas, and the workstation bottom tank contains gas and foam solution.

3. The pneumatic device for preparing bubbles according to claim 1, characterized in that, The liquid supply module also includes a first valve and a second valve for connecting the pneumatic diaphragm pump, the bubble solution tank and the workstation bottom tank; The pneumatic diaphragm pump includes an inlet end and an outlet end. The inlet end of the pneumatic diaphragm pump is connected to the bubble solution tank through a first valve; the outlet end of the pneumatic diaphragm pump is connected to the bottom tank of the workstation through a second valve.

4. The pneumatic device for preparing bubbles according to claim 1, characterized in that, The liquid supply module also includes a level gauge for monitoring the height of the solution in the bottom tank of the workstation, and a first pressure gauge for monitoring the air pressure in the bottom tank of the workstation. The level gauge is connected to the middle of the outer side of the bottom tank of the workstation via a flange, and the first pressure gauge is located on the upper part of the outer side of the bottom tank of the workstation.

5. The pneumatic device for preparing bubbles according to claim 1, characterized in that, The gas supply module also includes a second pressure gauge for monitoring the gas pressure of the workstation cover tank and a pressure relief valve for adjusting the pressure of the workstation cover tank; The second pressure gauge and pressure relief valve are located on the top of the outer side of the workstation cover tank.

6. The pneumatic device for preparing bubbles according to claim 1, characterized in that, The output module includes at least one bubble generator; the bubble generator includes an air inlet, a liquid inlet, and an output outlet; The output module also includes a first check valve and a second check valve for controlling the input of gas and bubble solution.

7. The pneumatic device for preparing bubbles according to claim 6, characterized in that, The bubble generator is welded to the bottom of the workstation tank, the output port is located outside the workstation tank and connected to the pneumatic valve, the air inlet and liquid inlet are located inside the tank and welded to the top of the workstation tank through a transmission pipe and each has an external thread. The external thread of the air inlet is connected to the first one-way valve; The external thread of the liquid inlet is connected to the second one-way valve, and the second one-way valve extends to the bottom of the workstation tank through a transmission pipe.

8. The pneumatic device for preparing bubbles according to claim 1, characterized in that, One end of the air inlet pipe is connected to external compressed gas, and three airflows are split off through the third valve; one of them is connected to the pneumatic diaphragm pump through the fourth valve and the first pressure reducing valve, another is connected to the workstation cover tank through the fifth valve and the second pressure reducing valve, and the third is connected to the bubble generator through the sixth valve.

9. The pneumatic device for preparing bubbles according to claim 1, characterized in that, The workstation bottom tank is equipped with a first pretreatment port for adjusting the liquid level and air pressure and is connected to a seventh valve; The workstation cover tank is equipped with a second pretreatment port for regulating air pressure and is connected to an eighth valve; The first and second pretreatment ports are connected to the outside via pipelines and are equipped with a ninth valve.

10. The pneumatic device for preparing bubbles according to claim 9, characterized in that, The first pretreatment port is located at two-thirds to three-quarters of the distance from the bottom of the bottom tank of the workstation, and the second pretreatment port is located at the bottom of the top tank of the workstation.

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