Water-saving dust-removing cooling control system for excavating anchor equipment

Abstract

The application provides a water-saving dust removal and cooling control system of a tunneling and anchoring device, and belongs to the technical field of mine dust removal devices. The water-saving dust removal and cooling control system of the tunneling and anchoring device comprises a closed circulation cooling loop, the closed circulation cooling loop comprises a containing compensation pipeline, the containing compensation pipeline comprises a compensation check valve, an overflow valve and an expansion water tank, a throttle valve is arranged on an external water supply pipeline, the opening degree of the throttle valve is controlled according to the cooling liquid temperature detected by a temperature monitoring device, and the temperature of the cooling liquid in the closed circulation cooling loop is adjusted by adjusting the water amount entering the cooler. The expansion water tanks are connected in parallel, the volume can be reduced, and the space occupation is reduced. The application adopts a multi-mode high-efficiency dust removal system, and the dust in the tunneling process of the tunneling and anchoring device is subjected to targeted high-efficiency and economical dust removal, so that the intelligent and accurate regulation and control of the gas mist amount and water saving are realized while the high-efficiency water mist dust removal is ensured. The water saving effect is good, and the problem of the roadway floor argillization is greatly relieved.

Description

Technical Field

[0001] This invention relates to a water-saving, dust-removing, and cooling control system for tunneling and anchoring equipment, belonging to the technical field of mine dust removal devices. Background Technology

[0002] The anchoring equipment used in coal mine roadway excavation faces is equipped with a motorized hydraulic wet anchor drilling rig, a shovel section, a cutting section, and a conveyor, etc., to realize the simultaneous excavation, support, breaking, and transportation processes in coal roadway construction. During the construction and use of the anchor drilling rig, cutting section, shovel section, and conveyor, dust is inevitably generated, resulting in high dust concentration in the roadway. In response, Chinese invention patent application with publication number CN116335748A discloses an integrated dust removal and flushing system and working method for anchoring, including a dust removal system and a high-pressure air mist flushing system set in parallel. The dust removal system and the high-pressure air mist flushing system are used for dust removal during construction and for flushing and slag removal of the anchor drilling rig, respectively.

[0003] In addition to the above, the construction of tunneling and anchoring equipment also involves the problem of high power and large heat generation of motors such as the cutting motor, shovel motor, conveyor motor, and oil pump motor. Therefore, a cooling system is required. The traditional cooling method is to use external water for cooling. However, external water contains a lot of calcium and magnesium ion compounds, which will cause scaling after long-term use. At the same time, the wastewater generated is directly discharged into the tunnel, resulting in a large amount of water waste. In response, Chinese utility model patent with authorization announcement number CN206595840U discloses a circulating cooling system for tunneling machines. This cooling system includes a cutting motor, a cutting reducer, an oil pump motor, and a tank for holding coolant. A water pump is connected to the tank. The water pump outlet is divided into three branches through pipes and connected to the cooling channel inlets of the cutting motor, the cutting reducer, and the oil pump motor, respectively. The cooling channel outlets of the three motors are all connected to the tank through pipes, and air coolers for cooling the coolant are installed on the pipes. This cooling system achieves circulating cooling, with no liquid discharged outside the system, avoiding water accumulation in the tunnel. Furthermore, the cooling medium is a mixture of water and ethylene glycol, which avoids internal corrosion and blockage caused by the influence of external water quality.

[0004] Another Chinese utility model patent, CN211648144U, discloses an internal circulation cooling and external spray system for a continuous coal mining machine. This system consists of an internal circulation cooling water circuit, an external circulation spray water circuit, and a water cooler. The internal circulation cooling water circuit cools the motor, frequency converter box, and hydraulic oil, while the external circulation spray water circuit sprays dust onto the cutting drum and dust collector. The water cooler is connected to an external water source via a filter and also serves as a heat exchanger between the internal and external circulating water. This system also achieves circulating cooling of the motor, using pure water for cooling; the external water is only used for spraying, avoiding scale buildup and waterway blockage.

[0005] Both of the above systems require water tanks to store coolant for motor cooling. These tanks are connected in series in a closed-loop cooling circuit, and each pump outlet is connected to an overflow pipe with an overflow valve. The overflow pipe outlet connects to the water tank. When the pressure in the water circuit exceeds the overflow valve's set value, the coolant flows back to the water tank through the overflow pipe. Typically, to ensure effective cooling, a large water tank is used to store a significant amount of coolant, ensuring sufficient coolant volume for circulation and preventing excessive temperature rise. This also helps maintain a sufficient coolant level as it is consumed over time. However, due to the series connection and the fact that the tanks are not usually filled to capacity, they are relatively large, requiring more space for installation. This space constraints hinder the compact and miniaturized design of the tunneling and anchoring equipment. At the same time, even if the large water tank is not filled with coolant, the amount of coolant is still relatively large, resulting in coolant waste and is not conducive to water-saving design. In addition, the water cooler in CN211648144U is connected to an external water source through a filter. A large amount of external water flows directly through the water cooler and then to each nozzle without any flow-throttling design, resulting in waste of external water. Summary of the Invention

[0006] The purpose of this invention is to provide a water-saving, dust-removing, and cooling control system for tunneling and anchoring equipment, which solves the problems in the prior art where a large water tank is connected in series in a closed-loop cooling circuit, resulting in a large water tank occupying a large layout space, which is not conducive to the compact and miniaturized design of tunneling and anchoring equipment and water-saving design. At the same time, this invention also solves the problem of water waste caused by the direct flow of external water through the water cooler.

[0007] To achieve the above objectives, the water-saving, dust-removing, and cooling control system for the tunneling and anchoring equipment in this invention adopts the following technical solution: A water-saving and dust-removing cooling control system for tunneling and anchoring equipment includes a cooler, an external water supply pipeline connected to the cooler, and a closed-loop cooling circuit for cooling the motor of the tunneling and anchoring equipment. The closed-loop cooling circuit includes a main circuit equipped with a circulating water pump, and also includes a receiving and compensation pipeline connected in parallel to the inlet and outlet sides of the circulating water pump. The receiving and compensation pipeline includes a compensation check valve, an overflow valve, and an expansion tank between the two for receiving coolant in the main circuit and compensating coolant in the main circuit. The overflow valve is located near the outlet of the circulating water pump. A temperature monitoring device is also provided on the main circuit, and a throttle valve is provided on the external water supply pipeline. The throttle valve is used to control the opening degree according to the coolant temperature detected by the temperature monitoring device, thereby adjusting the temperature of the coolant in the closed-loop cooling circuit by adjusting the amount of water entering the cooler.

[0008] Furthermore, the temperature monitoring device includes an inlet temperature monitoring device and an outlet temperature monitoring device respectively disposed on the inlet side and the outlet side of the cooler.

[0009] Furthermore, the water-saving and dust-removing cooling control system for the tunneling and anchoring equipment also includes a dust removal water circuit connected to the cooler for removing dust from the working environment of the tunneling and anchoring equipment. The dust removal water circuit includes a main dust removal water circuit and branch dust removal water circuits connected to the main dust removal water circuit. The water-saving and dust-removing cooling control system for the tunneling and anchoring equipment also includes an aerosol generator for connecting to the anchor bolting machine. The branch dust removal water circuits include aerosol dust removal water circuits connected to the aerosol generator. The water-saving and dust-removing cooling control system for the tunneling and anchoring equipment also includes a second external air supply pipeline connected to the aerosol generator.

[0010] Furthermore, the aerosol generator includes a water supply pipeline and an air supply pipeline. One end of the water supply pipeline is connected to the aerosol dust removal water circuit, and one end of the air supply pipeline is connected to a second external air supply pipeline. The other ends of the water supply pipeline and the air supply pipeline converge to connect to the anchor bolt machine. The water supply pipeline is equipped with a concentration sensor for detecting the concentration of external dust particles and a water flow regulator for adjusting the water volume based on the detection data of the concentration sensor. The water supply pipeline is also equipped with an atomizing device, and the air supply pipeline is equipped with an air flow regulator for adjusting the air volume.

[0011] Furthermore, one-way valves are installed on the water supply pipeline and the gas supply pipeline of the device, and a pressure reducing valve is also installed on the water supply pipeline.

[0012] Furthermore, the water-saving dust removal and cooling control system for the tunneling and anchoring equipment also includes a foam dust suppression device, which is connected to a second external air supply pipeline. The second external air supply pipeline and the mist generator are connected through a branch air supply pipeline.

[0013] Furthermore, the water-saving and dust-removing cooling control system for tunneling and anchoring equipment also includes a dust removal water circuit connected to the cooler for removing dust from the working environment of the tunneling and anchoring equipment. A direct water supply circuit is connected between the dust removal water circuit and the external water supply pipeline. A first check valve and a first shut-off valve are installed on the direct water supply circuit, and a second shut-off valve is installed on the external water supply pipeline. The second shut-off valve and the throttle valve are located downstream of the connection point between the external water supply pipeline and the direct water supply circuit.

[0014] Furthermore, the first shut-off valve is closed when the temperature of the coolant in the closed-loop cooling circuit is higher than the upper limit.

[0015] Furthermore, the water-saving and dust-removing cooling control system for the tunneling and anchoring equipment also includes a dust removal water circuit connected to the cooler and used to remove dust from the working environment of the tunneling and anchoring equipment. The dust removal water circuit includes a main dust removal water circuit and branch dust removal water circuits connected to the main dust removal water circuit. The branch dust removal water circuits include a cutting section / shovel section dust removal water circuit for connecting to the cutting section and the shovel section of the tunneling and anchoring equipment.

[0016] Furthermore, the dust removal water circuit of the cutting section / shovel section includes a cutting section water supply part for supplying water to the cutting section and a shovel section water supply part for supplying water to the shovel section. The shovel section water supply part is connected in series downstream of the cutting section water supply part. A second one-way valve is provided between the cutting section water supply part and the shovel section water supply part. The shovel section water supply part is connected to a first external air supply pipeline, and an air supply one-way valve is provided on the first external air supply pipeline.

[0017] Furthermore, the water-saving and dust-removing cooling control system for tunneling and anchoring equipment also includes a dust removal water circuit connected to the cooler for removing dust from the working environment of the tunneling and anchoring equipment. The dust removal water circuit includes a main dust removal water circuit and branch dust removal water circuits connected to the main dust removal water circuit. The water-saving and dust-removing cooling control system for tunneling and anchoring equipment also includes a foam dust suppression device. The branch dust suppression water circuit includes a foam dust suppression water circuit connected to the foam dust suppression device. A first reversing valve is installed on the foam dust suppression water circuit. The foam dust suppression device is also connected to a second external air supply pipeline. A second reversing valve is connected between the second external air supply pipeline and the first reversing valve. The second reversing valve and the first reversing valve are coaxial valves, so that the second reversing valve controls the operation of the first reversing valve.

[0018] Furthermore, the water-saving and dust-removing cooling control system for tunneling and anchoring equipment also includes a dust removal water circuit connected to the cooler for removing dust from the working environment of the tunneling and anchoring equipment. The dust removal water circuit includes a main dust removal water circuit and branch dust removal water circuits connected to the main dust removal water circuit. The branch dust removal water circuit includes a conveyor dust removal water circuit for connecting to the conveyor, and a third reversing valve is installed on the conveyor dust removal water circuit. The water-saving and dust-removing cooling control system for tunneling and anchoring equipment also includes a foam dust suppression device. The foam dust suppression device is connected to a second external air supply pipeline. A fourth reversing valve is connected between the second external air supply pipeline and the third reversing valve. The third and fourth reversing valves are coaxial valves, so that the operation of the third reversing valve is controlled by the fourth reversing valve.

[0019] The beneficial effects of this invention are as follows: This invention provides an improved water-saving and dust-removing cooling control system for tunneling and anchoring equipment. The main improvement lies in the closed-loop cooling circuit, which includes a containment and compensation pipeline. The containment and compensation pipeline includes a compensation check valve, an overflow valve, and an expansion tank between the two. Compared with the prior art, the expansion tank in this invention is arranged in parallel. Since the two ends of the containment and compensation pipeline are respectively connected to the inlet and outlet sides of the circulating water pump, when the pressure of the coolant in the main circuit reaches the set value of the overflow valve, the overflow valve opens, and the coolant overflows back into the expansion tank. When the coolant in the main circuit is consumed and insufficient, the coolant in the expansion tank enters the main circuit through the compensation check valve to replenish the coolant in time, achieving the purpose of containing and compensating for the expansion and contraction of the coolant. That is, it realizes the function of replenishing coolant consumption and overflowing under overpressure that the water tank should have in the prior art. The main circuit no longer requires a water tank. Since coolant consumption is a lengthy process and the amount of overpressure overflow is usually not significant, a large water tank is unnecessary. Therefore, the expansion tank in this invention can be significantly smaller in size compared to existing technologies, occupying less space. Furthermore, the smaller expansion tank reduces the amount of coolant stored, which is beneficial for water-saving design.

[0020] Furthermore, since a water tank is no longer installed in the main circuit, the coolant in the main circuit circulates directly. The reduced amount of coolant participating in the circulation leads to a faster temperature rise. Therefore, this invention incorporates a temperature monitoring device in the main circuit and a throttle valve on the external water supply line. By detecting the coolant temperature in the main circuit, the opening of the throttle valve is controlled, thereby controlling the amount of water entering the cooler and adjusting the cooling effect of the cooler on the closed-loop cooling circuit, thus regulating the temperature of the coolant in the closed-loop cooling circuit. Simultaneously, due to the throttle valve, its opening is constantly adjusted. When the opening is small, the amount of external water flowing through the cooler is reduced, thereby minimizing waste of external water.

[0021] In summary, this invention not only achieves the design of a small-volume water tank, reducing the space occupied by the water tank, which is conducive to the compact, miniaturized and water-saving design of the tunneling and anchoring equipment, but also meets the basic functions of replenishing coolant consumption, overpressure overflow and coolant temperature control. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the water-saving, dust-removing, and cooling control system for the tunneling and anchoring equipment in this invention. Figure 2 for Figure 1 Internal control principle diagram of the mist generator.

[0023] In the diagram: 100, First external air supply line; 200, Second external air supply line; 300, External water supply line; 400, Closed-loop cooling circuit; 500, Compensation line; 1, Inlet shut-off valve; 2, First pressure gauge; 3, Filter; 4, Pressure reducing valve; 5, Flow meter; 6, First relief valve; 7, Second pressure gauge; 8, First cooler; 9, Second shut-off valve; 10, First throttle valve; 11, First shut-off valve; 12, First check valve; 13, Third shut-off valve; 14, Fourth shut-off valve; 15, Inlet temperature sensor; 16, Second cooler. 17. Outlet temperature sensor; 18. First motor; 19. Circulating water pump; 20. Compensating check valve; 21. Expansion tank; 22. Second overflow valve; 23. Third pressure gauge; 24. Cooler for left cutting motor; 24.1. Cooler for right cutting motor; 24.2. Cooler for left shovel motor; 24.3. Cooler for right shovel motor; 24.4. Cooler for conveyor motor; 24.5. Cooler for oil pump motor; 25. Second motor; 26. Second water pump; 27. Accumulator; 28. Fourth pressure gauge; 29. ​​Third overflow valve; 30. Second throttle valve; 31. Air supply check valve; 32. Right shovel section; 32.1. Left shovel section; 33. Second check valve; 34. Third throttle valve; 35. Right cutting section; 35.1. Left cutting section; 36.1. First aerosol generator; 36.2. Second aerosol generator; 36.3. Third aerosol generator; 36.4. Fourth aerosol generator; 36.5. Fifth aerosol generator; 36.6. Sixth aerosol generator; 37.1. First side anchor bolting machine; 37.2. Second side anchor bolting machine; 38.1. First top anchor bolting machine 38.2 Second top anchor bolting machine; 38.3 Third top anchor bolting machine; 38.4 Fourth top anchor bolting machine; 39. Right cutting drum foam nozzle; 39.1 Left cutting drum foam nozzle; 40. Foam dust suppression device; 41. Third check valve; 42. Fourth check valve; 43. Fifth reversing valve; 44. Fifth shut-off valve; 45. Third reversing valve; 46. Fourth reversing valve; 47. Conveyor; 48. First reversing valve; 49. Second reversing valve; 50. Sixth shut-off valve; 51. Main dust removal water circuit; 52. Direct water supply circuit; 53. Branch air supply pipeline. Detailed Implementation

[0024] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0025] This invention improves the closed-loop cooling circuit for motor cooling in the water-saving and dust-removing cooling control system of tunneling and anchoring equipment. Instead of series connection, water tanks are connected in parallel. The water tanks only serve to contain and compensate for the expansion and contraction of the coolant, reducing tank volume, space occupation, and coolant storage capacity. Simultaneously, by installing a throttle valve on the external water supply pipeline, the opening of the throttle valve is controlled by detecting the temperature of the coolant in the closed-loop cooling circuit, thereby controlling the amount of water entering the cooler. This ensures the cooling effect of the coolant in the closed-loop cooling circuit, thus guaranteeing the cooling effect on the motor. Furthermore, the throttle valve also achieves water conservation.

[0026] Example 1 of the water-saving, dust-removing, and cooling control system for tunneling and anchoring equipment in this invention: like Figure 1 As shown, the water-saving, dust-removing, and cooling control system for tunneling and anchoring equipment includes a cooler ( Figure 1 The system comprises a second cooler 16 (with four interfaces), an external water supply pipe 300 connected to one interface of the second cooler 16, a dust removal water circuit connected to another interface of the second cooler 16 for dust removal of the working environment of the tunneling and anchoring equipment, and a closed-loop cooling circuit 400 connected to the remaining two interfaces of the second cooler 16 for cooling the motor of the tunneling and anchoring equipment. The external water supply pipe 300 connects to an external water source, allowing external water to flow into the second cooler 16. After flowing out of the second cooler 16, the water passes through the dust removal water circuit to remove dust from various parts of the tunneling and anchoring equipment. During the flow of the external water through the second cooler 16, it cools the coolant flowing through the second cooler 16 in the closed-loop cooling circuit 400.

[0027] Specifically, the closed-loop cooling circuit 400 includes a main circuit, on which a circulating water pump 19 and a motor cooler are installed. The circulating water pump 19 is driven by a first motor 18. The motor cooler includes a left cutting motor cooler 24, a right cutting motor cooler 24.1, a left shovel motor cooler 24.2, a right shovel motor cooler 24.3, a conveyor motor cooler 24.4, and an oil pump motor cooler 24.5, all connected in parallel. The closed-loop cooling circuit 400 also includes a compensation piping 500 connected in parallel to the inlet and outlet sides of the circulating water pump 19. The compensation piping 500 includes a compensation check valve 20 and an overflow valve ( Figure 1 The second overflow valve 22 is located near the outlet of the circulating water pump 19. The second overflow valve 22 is located near the outlet of the circulating water pump 19. The second overflow valve 22 is located near the outlet of the circulating water pump 19. The second overflow valve 22 is located near the outlet of the circulating water pump 19.

[0028] A third pressure gauge 23 is also installed in the main circuit. During operation, the first motor 18 starts, driving the circulating water pump 19. Pure water flows along the pipeline through the third pressure gauge 23 under the pumping action of the circulating water pump 19. The third pressure gauge 23 is used to detect the water pressure at the pump outlet. The pure water then flows to the parallel-connected coolers 24 for the left cutting motor, 24.1 for the right cutting motor, 24.2 for the left shovel motor, 24.3 for the right shovel motor, 24.4 for the conveyor motor, and 24.5 for the oil pump motor. It then flows through the second cooler 16, circulating with the operation of the circulating water pump 19. During this circulation, the pure water absorbs the heat dissipated by the motor and carries it away, thus cooling the motor. Meanwhile, external water flows through the external water supply pipeline 300 through the second cooler 16, carrying away the heat absorbed by the pure water after absorbing the heat dissipated by the motor.

[0029] In the aforementioned cycle, as time progresses, when the coolant becomes insufficient due to consumption, the coolant in the expansion tank 21 enters the main circuit through the compensating check valve 20 to replenish the coolant in a timely manner. Conversely, when the pressure of the coolant in the main circuit reaches the set value of the second overflow valve 22, the second overflow valve 22 opens, and the coolant overflows back into the expansion tank 21, achieving the purpose of containing and compensating for the expansion and contraction of the coolant. This fulfills the functions of replenishing coolant consumption and overpressure overflow that should be present in the water tank in the prior art. Furthermore, no water tank is installed in the main circuit. Since coolant consumption is a long process and the amount of overpressure overflow is usually not large, there is no need to install a large water tank. Therefore, the expansion tank 21 in this invention can be significantly reduced in size compared to the prior art, occupying less layout space, which is beneficial for the compact, miniaturized, and water-saving design of the tunneling and anchoring equipment.

[0030] Since a water tank is no longer installed in the main circuit, the coolant in the main circuit circulates directly. The amount of coolant participating in the circulation is reduced, leading to a faster temperature rise. Therefore, this invention includes a temperature monitoring device in the main circuit and a throttling valve on the external water supply pipe 300. Figure 1The first throttle valve 10 is an electrically controlled throttle valve. In this embodiment, the temperature monitoring devices include an inlet temperature monitoring device (i.e., inlet temperature sensor 15) and an outlet temperature monitoring device (i.e., outlet temperature sensor 17) respectively installed on the inlet and outlet sides of the second cooler 16, which monitor the inlet and outlet temperatures of the second cooler 16, respectively. When the inlet temperature is too high and exceeds the upper limit, the inlet temperature sensor 15 acquires a digital signal and causes the first throttle valve 10 to receive a feedback electrical signal, controlling the opening of the throttle valve to increase. By increasing the amount of external water flowing through the second cooler 16, the cooling effect of the external water on the coolant in the closed-loop cooling circuit 400 is improved. When the outlet temperature is too low and falls below the lower limit, the outlet temperature sensor 17 acquires a digital signal and sends a feedback signal to the first throttle valve 10, controlling the throttle valve opening to decrease. This reduces the amount of external water flowing through the second cooler 16, thus reducing the cooling effect of the external water on the coolant in the closed-loop cooling circuit 400. This ensures that the coolant in the closed-loop cooling circuit 400 remains within a reasonable temperature range, achieving intelligent matching of "water volume" and "temperature," avoiding problems with untimely regulation, ensuring the balance and stability of the entire system, and enabling the recycling of pure water for cooling the motor. Furthermore, since the opening of the first throttle valve 10 is frequently adjusted, a smaller opening reduces the amount of external water flowing through the second cooler 16, thereby reducing waste of external water.

[0031] like Figure 1 As shown, the external water supply pipeline 300 includes an inlet shut-off valve 1, a first pressure gauge 2, a filter 3, a pressure reducing valve 4, a flow meter 5, a first overflow valve 6, a second pressure gauge 7, and a first cooler 8. When the inlet shut-off valve 1 is open, external water can enter the external water supply pipeline 300. The first pressure gauge 2 is used to detect the pressure at the inlet. The filter 3 filters impurities in the external water supply and is a backwash filter with an electrically controlled automatic backwashing function. When the set pressure difference or time is reached, the self-cleaning function is activated, and the filtered impurities can be automatically backwashed to the drain outlet for discharge. This effectively removes suspended particles, sediments, and plankton, avoiding manual operation and reducing later maintenance costs. Downstream of filter 3 is a pressure reducing valve 4. When the inlet water pressure of the pipeline is greater than the set pressure of pressure reducing valve 4, the pressure is reduced and then enters the first cooler 8 after passing through flow meter 5. The first overflow valve 6 and the second pressure gauge 7 are located between flow meter 5 and the first cooler 8. When the water pressure is greater than the set pressure of the first overflow valve 6, the water overflows to the outside. The second pressure gauge 7 is used to detect the pressure of the external water before entering the first cooler 8.

[0032] like Figure 1As shown, a direct water supply line 52 connects the dust removal water circuit and the external water supply line 300. This means that a portion of the external water can first enter the second cooler 16 through the external water supply line 300. This portion of cooling water absorbs the heat from the coolant in the closed-loop cooling circuit 400 before entering the dust removal water circuit. Another portion of the external water can directly enter the dust removal water circuit through the external water supply line 300 and the direct water supply line 52. The direct water supply line 52 is equipped with a first check valve 12 and a first shut-off valve 11. The first check valve 12 prevents backflow of water in the dust removal water circuit, and the first shut-off valve 11 controls the opening and closing of the direct water supply line 52. That is, when the first shut-off valve 11 is open, external water can flow through the first check valve 12 into the dust removal water circuit.

[0033] A second shut-off valve 9 is installed on the external water supply pipeline 300. The second shut-off valve 9 and the first throttle valve 10 are located downstream of the connection point between the external water supply pipeline 300 and the direct water supply line 52. When the second shut-off valve 9 is open, external water can enter the second cooler 16. In practice, the water supply to the second cooler 16 takes priority over the water supply to the direct water supply line 52, ensuring that the amount of external water entering the second cooler 16 can be regulated by the first throttle valve 10, thereby ensuring the temperature regulation function of the coolant in the closed-loop cooling circuit 400. In specific applications, if the inlet temperature sensor 15 detects that the inlet temperature of the second cooler 16 exceeds the upper limit, the first shut-off valve 11 can be closed to allow more external water to enter the second cooler 16, so as to regulate the temperature of the coolant in the closed-loop cooling circuit 400 in a timely manner.

[0034] The aforementioned dust removal water circuit includes a main dust removal water circuit 51 and branch dust removal water circuits connected to the main dust removal water circuit 51. The main dust removal water circuit 51 is directly connected to the interface of the second cooler 16. There are multiple branch dust removal water circuits, including a cutting section / shovel section dust removal water circuit for connecting to the cutting section and shovel section of the excavating and anchoring equipment, namely water circuit I. Water circuit I is sequentially equipped with a second motor 25, a second water pump 26, an accumulator 27 (specifically a piston accumulator), a fourth pressure gauge 28, and a third overflow valve 29. Water circuit I also includes a cutting section water supply section for supplying water to the cutting section (including the left cutting section 35.1 and the right cutting section 35) and a shovel section water supply section for supplying water to the shovel section (including the left shovel section 32.1 and the right shovel section 32). Several high-pressure water nozzles are arranged on the left cutting section 35.1 and the right cutting section 35 to form a high-pressure spray dust removal system for the cutting section.

[0035] The water supply section of the shovel section is connected in series downstream of the water supply section of the cutting section. A third throttle valve 34 and a second check valve 33 are sequentially installed between the water supply sections of the cutting section and the water supply section of the shovel section. The water supply section of the shovel section is connected to a first external air supply pipeline 100, which is used to connect to an external air source. A second throttle valve 30 and an air supply check valve 31 are sequentially installed on the first external air supply pipeline 100 to provide external air to the shovel section, thus forming a water-air dust removal system for the shovel section.

[0036] The working process of the dust removal water circuit of the cutting section / shovel section is as follows: the external water that has absorbed heat through the second cooler 16 flows along the main dust removal water circuit 51 to water circuit I (of course, when the first shut-off valve 11 is open, external water will also enter the main dust removal water circuit 51 from the direct supply water circuit 52 and then enter water circuit I). After the second motor 25 starts, it drives the second water pump 26 to work. The pressurized external water flows through the accumulator 27 and the fourth pressure gauge 28. The accumulator 27 is used to reduce impact and maintain pressure. The fourth pressure gauge 28 is used to detect the pressure at the pump outlet. Then the external water flows through the third overflow valve 29 to the left cutting section 35.1 and the right cutting section 35 to realize high-pressure spray dust removal in the cutting section. When the water pressure exceeds the set pressure of the third overflow valve 29, the water overflows through the third overflow valve 29. Meanwhile, external water flows to the left shovel section 32.1 and the right shovel section 32 through the third throttle valve 34 and the second one-way valve 33, while external gas flows to the left shovel section 32.1 and the right shovel section 32 through the second throttle valve 30 and the gas supply one-way valve 31. The third throttle valve 34 and the second throttle valve 30 are also electrically controlled throttle valves. By adjusting the opening of the two valves through electrical control, a reasonable ratio of water and gas volume for dust removal under different particulate matter concentrations can be obtained, achieving efficient water-saving dust removal effect and meeting the needs of different working conditions. At the same time, it is separated from other pipelines and is independent of each other, ensuring the safety and reliability of the system.

[0037] like Figure 1As shown, the water-saving dust removal and cooling control system for the tunneling and anchoring equipment also includes a foam dust suppression device 40 connected to the foam nozzles 39.1 and 39 of the left and right cutting drums. The branch dust suppression water circuit also includes a foam dust suppression water circuit, i.e., water circuit IV, connected to the foam dust suppression device 40. Water circuit IV is sequentially equipped with a fourth shut-off valve 14, a first reversing valve 48, and a fourth check valve 42 (all check valves are spring-loaded). The first reversing valve 48 is a two-position, two-way reversing valve. The foam dust suppression device 40 is also connected to a second external air supply pipeline 200, which is used to connect to an external air source. The second external air supply pipeline 200 is sequentially equipped with a sixth shut-off valve 50, a fifth reversing valve 43, and a third check valve 41. The fifth reversing valve 43 is a two-position, two-way hydraulic reversing valve. A second reversing valve 49 is connected between the second external air supply line 200 and the first reversing valve 48. The second reversing valve 49 is a two-position five-way reversing valve and forms a coaxial valve with the first reversing valve 48, so as to control the operation of the first reversing valve 48 through the second reversing valve 49.

[0038] The foam dust suppression device 40, together with water circuit IV and the second external air supply pipeline 200, forms a foam dust removal system. Its operation is as follows: when the dust concentration sensor on the excavating and anchoring equipment detects excessive external dust, the foam dust removal system is automatically activated. External water, after absorbing heat from the second cooler 16, flows along the pipeline to water circuit IV (when the first shut-off valve 11 is open, external water will also enter water circuit IV from the direct water supply pipeline 52). When the fourth shut-off valve 14 is open, water passes through the fourth shut-off valve 14... Upon reaching the first reversing valve 48, water path IV and the second external air supply pipeline 200 are connected via the second reversing valve 49. The second reversing valve 49 is energized and reverses direction. When the sixth shut-off valve 50 is open, gas flows along the air path through the second reversing valve 49, causing the first reversing valve 48 to reverse, thus opening water path IV. Water flows through the fourth one-way valve 42 to the foam dust suppression device 40. The water in this pipeline dilutes the foam concentrate, and the degree of dilution is controlled by the opening and closing of the fourth shut-off valve 14. Simultaneously, when the sixth shut-off valve 50 is open, gas flows along the pipeline to the fifth reversing valve 43. The hydraulic control of this valve reverses direction, allowing gas to enter the foam dust suppression device 40. Finally, under the action of the airflow, the left cutting drum foam nozzle 39.1 and the right cutting drum foam nozzle 39 achieve foam dust removal.

[0039] like Figure 1As shown, the branch dust removal water circuit also includes a conveyor dust removal water circuit, namely water circuit V, for connection to the conveyor 47. Water circuit V is sequentially equipped with a third shut-off valve 13 and a third directional valve 45, which is a two-position, two-way directional valve. A fourth directional valve 46 is connected between the second external air supply pipeline 200 and the third directional valve 45. The fourth directional valve 46 is a two-position, five-way directional valve and forms a coaxial valve with the third directional valve 45. The fourth directional valve 46 controls the operation of the third directional valve 45. Using a coaxial valve minimizes the influence of fluid pressure difference on the valve opening pressure, allowing for control of high flow and high pressure, strong anti-pollution capability, and maximum saving of installation space.

[0040] Several high-pressure water nozzles are installed on the conveyor 47 to form a conveyor spray dust removal system. The working process is as follows: external water, after absorbing heat from the second cooler 16, flows along the pipeline to water path V (when the first shut-off valve 11 is open, external water will also enter water path V from the direct water supply path 52). When the third shut-off valve 13 is open, the water flows to the third reversing valve 45. Water path V and the second external air supply pipeline 200 are connected through the fourth reversing valve 46. The fourth reversing valve 46 is energized and reverses direction. When the sixth shut-off valve 50 is open, gas flows along the air path through the fourth reversing valve 46, driving the third reversing valve 45 to reverse direction, thus opening water path V. Water flows through the third reversing valve 45 to the conveyor 47, achieving water mist dust removal for the conveyor.

[0041] The branch dust removal water circuit also includes an aerosol dust removal water circuit connected to an aerosol generator, which is connected to the anchor bolt machine, such as... Figure 1 As shown, there are six aerosol generators in total. The first aerosol generator 36.1 is connected to the first side anchor bolting machine 37.1, the second aerosol generator 36.2 is connected to the second side anchor bolting machine 37.2, the third aerosol generator 36.3 is connected to the first top anchor bolting machine 38.1, the fourth aerosol generator 36.4 is connected to the second top anchor bolting machine 38.2, the fifth aerosol generator 36.5 is connected to the third top anchor bolting machine 38.3, and the sixth aerosol generator 36.6 is connected to the fourth top anchor bolting machine 38.4. The first aerosol generator 36.1 and the second aerosol generator 36.2 are connected to the main dust removal water channel 51 via water channel III, while the third aerosol generator 36.3, the fourth aerosol generator 36.4, the fifth aerosol generator 36.5, and the sixth aerosol generator 36.6 are connected to the main dust removal water channel 51 via water channel II.

[0042] The above constitutes the drilling rig's water-based slag removal and dust removal system. Its working process is as follows: After absorbing heat from the second cooler 16, external water flows along pipelines to water lines II and III. When the first shut-off valve 11 is opened, external water also enters water lines II and III directly from the direct supply water line 52, and then enters the six aerosol generators. A branch air supply line 53 connects the second external air supply line 200 to the aerosol generators. A fifth shut-off valve 44 (all shut-off valves are ball valves) is installed on the branch air supply line 53. When the fifth shut-off valve 44 is open, external gas enters each aerosol generator through the branch air supply line 53, and finally reaches several anchor bolting machines (top) and anchor bolting machines (side). Under the action of the aerosol generators, the drilling rig achieves aerosol slag removal and dust removal, meeting the "four tops and two sides" drilling and slag removal requirements of the drilling and anchoring equipment, maximizing the drilling rig's efficient dust removal and water conservation. Of course, in other embodiments, the aerosol generating device includes, but is not limited to, a configuration suitable for "four tops and two sides", and can also meet the configuration requirements of "multiple tops and multiple sides".

[0043] The internal control logic principle of the aerosol generator is as follows: Figure 2 As shown, the aerosol generator includes a water supply pipeline and an air supply pipeline. One end of the water supply pipeline is connected to the aerosol dust removal water circuit, and one end of the air supply pipeline is connected to a second external air supply pipeline 200. The other ends of the water supply pipeline and the air supply pipeline converge to connect to the corresponding anchor bolt machine. The water supply pipeline is sequentially equipped with a pressure reducing valve, a check valve, a concentration sensor, an electrically controlled water flow regulator, and an atomizing device. The atomizing device is used to atomize the external water, and the concentration sensor is used to detect the concentration of external dust particles and convert the collected concentration into a digital signal, which is then transmitted to the electrically controlled water flow regulator to convert it into an electrical signal. The electrically controlled water flow regulator controls the water flow based on the dust particle concentration. The air supply pipeline is sequentially equipped with a check valve and an air flow regulator, thereby ensuring efficient water mist dust removal while achieving intelligent and precise control of the aerosol volume and water conservation, achieving optimal slag removal and minimal water consumption. In summary, this invention employs a multi-mode high-efficiency dust removal system to target dust or coal dust sources during the tunneling process of the tunneling and anchoring equipment. While ensuring efficient water mist dust removal, it achieves intelligent and precise control of the mist volume and water conservation, resulting in excellent water-saving performance and greatly alleviating the problem of mud formation on the floor of coal mine roadways.

[0044] In other implementations of the water-saving, dust-removing, and cooling control system for tunneling and anchoring equipment: the one-way valves on the device's water supply pipeline and air supply pipeline, as well as the pressure reducing valve on the device's water supply pipeline, can all be installed in the upstream pipeline.

[0045] In other implementations of the water-saving, dust-removing, and cooling control system for tunneling and anchoring equipment: the water flow regulator may not be electrically controlled, but manually adjustable. In this case, the water flow regulator needs to be manually adjusted according to the concentration of external dust particles detected by the concentration sensor.

[0046] In other implementations of the water-saving, dust-removing, and cooling control system for tunneling and anchoring equipment: no water flow regulator is installed on the water supply pipeline of the device, and no air volume regulator is installed on the air supply pipeline of the device. At this time, there is no need to install a concentration sensor. The mist generator does not have the function of adjusting mist volume and water volume. Both mist volume and water volume are constant.

[0047] In other implementations of the water-saving, dust-removing, and cooling control system for tunneling and anchoring equipment: when the control system includes both an aerosol generator and a foam dust suppression device, the two devices can be connected to independent external air supply lines.

[0048] In other implementations of the water-saving, dust-removing, and cooling control system for tunneling and anchoring equipment, each throttle valve can also be manually controlled.

[0049] In other implementations of the water-saving dust removal and cooling control system for tunneling and anchoring equipment: the drilling rig water-cooled slag removal and dust removal system may not be an aerosol dust removal system, but rather a water mist dust removal system. In this case, there is no need to install branch air supply pipelines or aerosol generators. External water flows directly to the anchor bolting machine, and aerosol dust removal is achieved through nozzles. Of course, in other implementations, the control system may not include the drilling rig water-cooled slag removal and dust removal system, but instead perform dust removal on the working environment of other components of the tunneling and anchoring equipment, such as the conveyor, cutting section, and shovel section.

[0050] In other embodiments of the water-saving, dust-removing, and cooling control system for tunneling and anchoring equipment: For the dust removal water circuit of the conveyor, the third directional valve installed on it can also be controlled independently, for example, by hydraulic or electric control. That is, the third directional valve is no longer a coaxial valve with the conveyor, and in this case, a fourth directional valve is not required. Of course, in other embodiments, the control system may not include the conveyor's dust removal water circuit, but instead focus on dust removal for the working environment of other components of the tunneling and anchoring equipment, such as the bolting machine, cutting section, and shovel section.

[0051] In other embodiments of the water-saving dust removal and cooling control system for tunneling and anchoring equipment: For the foam dust suppression water circuit, the first reversing valve installed on it can also be controlled independently, such as by hydraulic or electric control, that is, the first reversing valve is no longer a coaxial valve with another valve, and in this case, there is no need to install a second reversing valve. In other embodiments, the foam dust suppression device may not be required, and the dust removal water circuit can be directly connected to the cutting drum nozzle to achieve water mist dust removal, in which case there is no need to install a second external air supply pipeline.

[0052] In other embodiments of the water-saving, dust-removing, and cooling control system for the tunneling and anchoring equipment: For the dust removal water circuit of the cutting / shovel section, the water supply part of the shovel section no longer needs to be connected to the first external air supply pipeline. In this case, components such as the third throttle valve, second check valve, second throttle valve, and air supply check valve are also unnecessary. The shovel section, like the cutting section, uses spray dust removal. In other embodiments, the spray dust removal of the shovel section and the spray dust removal of the cutting section can be separated, with two separate water circuits supplying water. Of course, in other embodiments, the control system may not include the dust removal water circuit of the cutting / shovel section, but instead perform dust removal on the working environment of other components of the tunneling and anchoring equipment, such as the bolting machine and the conveyor.

[0053] In other implementations of the water-saving and dust-removing cooling control system for tunneling and anchoring equipment: the first shut-off valve can also be in the open state when the temperature of the coolant in the closed-loop cooling circuit is higher than the upper limit. At this time, a throttle valve can be set on the direct water supply line. By reducing the opening of the throttle valve, the amount of water passing through the direct water supply line is reduced, thereby allowing more water to enter the second cooler, which facilitates the adjustment of the temperature of the coolant in the closed-loop cooling circuit.

[0054] In other implementations of the water-saving, dust-removing, and cooling control system for tunneling and anchoring equipment: a direct water supply circuit may not be required, and the water in the dust removal water circuit will come from the water flowing through the second cooler from an external water supply.

[0055] In other implementations of the water-saving and dust-removing cooling control system for tunneling and anchoring equipment: a temperature monitoring device can be installed only on the inlet side or only on the outlet side of the cooler, and the opening of the throttle valve can be increased only when the temperature of the coolant exceeds the upper limit, thereby increasing the amount of water entering the cooler and improving the heat dissipation effect of the coolant in the closed-loop cooling circuit.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A water-saving, dust-removing, and cooling control system for tunneling and anchoring equipment, comprising a cooler, an external water supply pipeline connected to the cooler, and a closed-loop cooling circuit for cooling the motor of the tunneling and anchoring equipment, wherein the closed-loop cooling circuit includes a main circuit equipped with a circulating water pump, characterized in that, The closed-loop cooling circuit also includes a containment and compensation pipeline connected in parallel to the inlet and outlet sides of the circulating water pump. The containment and compensation pipeline includes a compensation check valve, an overflow valve, and an expansion tank between the two for containing the coolant in the main circuit and compensating the coolant in the main circuit. The overflow valve is located near the outlet of the circulating water pump. The main circuit is also equipped with a temperature monitoring device, and the external water supply pipeline is equipped with a throttle valve. The throttle valve is used to control the opening degree according to the coolant temperature detected by the temperature monitoring device, thereby adjusting the temperature of the coolant in the closed-loop cooling circuit by adjusting the amount of water entering the cooler.

2. The water-saving, dust-removing, and cooling control system for tunneling and anchoring equipment according to claim 1, characterized in that, The temperature monitoring devices include an inlet temperature monitoring device and an outlet temperature monitoring device respectively installed on the inlet side and the outlet side of the cooler.

3. The water-saving, dust-removing, and cooling control system for tunneling and anchoring equipment according to claim 1 or 2, characterized in that, The water-saving and dust-removing cooling control system for tunneling and anchoring equipment also includes a dust removal water circuit connected to the cooler for removing dust from the working environment of the tunneling and anchoring equipment. The dust removal water circuit includes a main dust removal water circuit and branch dust removal water circuits connected to the main dust removal water circuit. The water-saving and dust-removing cooling control system for tunneling and anchoring equipment also includes an aerosol generator for connecting to the anchor bolting machine. The branch dust removal water circuits include aerosol dust removal water circuits connected to the aerosol generator. The water-saving and dust-removing cooling control system for tunneling and anchoring equipment also includes a second external air supply pipeline connected to the aerosol generator.

4. The water-saving, dust-removing, and cooling control system for tunneling and anchoring equipment according to claim 3, characterized in that, The aerosol generator includes a water supply pipeline and an air supply pipeline. One end of the water supply pipeline is connected to the aerosol dust removal water circuit, and one end of the air supply pipeline is connected to a second external air supply pipeline. The other ends of the water supply pipeline and the air supply pipeline converge to connect to the anchor bolt machine. The water supply pipeline is equipped with a concentration sensor for detecting the concentration of external dust particles and a water flow regulator for adjusting the water volume based on the detection data of the concentration sensor. The water supply pipeline is also equipped with an atomizing device, and the air supply pipeline is equipped with an air flow regulator for adjusting the air volume.

5. The water-saving, dust-removing, and cooling control system for tunneling and anchoring equipment according to claim 4, characterized in that, One-way valves are installed on the water supply pipeline and the gas supply pipeline of the device, and a pressure reducing valve is also installed on the water supply pipeline.

6. The water-saving, dust-removing, and cooling control system for tunneling and anchoring equipment according to claim 3, characterized in that, The water-saving, dust-removing, and cooling control system for tunneling and anchoring equipment also includes a foam dust suppression device. The foam dust suppression device is connected to a second external air supply pipeline, and the second external air supply pipeline and the mist generator are connected through a branch air supply pipeline.

7. The water-saving, dust-removing, and cooling control system for tunneling and anchoring equipment according to claim 1 or 2, characterized in that, The water-saving and dust-removing cooling control system for tunneling and anchoring equipment also includes a dust removal water circuit connected to the cooler for removing dust from the working environment of the tunneling and anchoring equipment. A direct water supply circuit is connected between the dust removal water circuit and the external water supply pipeline. A first check valve and a first shut-off valve are installed on the direct water supply circuit. A second shut-off valve is installed on the external water supply pipeline. The second shut-off valve and the throttling valve are located downstream of the connection between the external water supply pipeline and the direct water supply circuit.

8. The water-saving, dust-removing, and cooling control system for tunneling and anchoring equipment according to claim 7, characterized in that, The first shut-off valve is closed when the temperature of the coolant in the closed-loop cooling circuit is higher than the upper limit.

9. The water-saving, dust-removing, and cooling control system for tunneling and anchoring equipment according to claim 1 or 2, characterized in that, The water-saving and dust-removing cooling control system for tunneling and anchoring equipment also includes a dust removal water circuit connected to the cooler for removing dust from the working environment of the tunneling and anchoring equipment. The dust removal water circuit includes a main dust removal water circuit and branch dust removal water circuits connected to the main dust removal water circuit. The branch dust removal water circuits include a cutting section / shovel section dust removal water circuit for connecting to the cutting section and the shovel section of the tunneling and anchoring equipment.

10. The water-saving, dust-removing, and cooling control system for tunneling and anchoring equipment according to claim 9, characterized in that, The dust removal water circuit of the cutting section / shovel section includes a cutting section water supply part for supplying water to the cutting section and a shovel section water supply part for supplying water to the shovel section. The shovel section water supply part is connected in series downstream of the cutting section water supply part. A second one-way valve is provided between the cutting section water supply part and the shovel section water supply part. The shovel section water supply part is connected to a first external air supply pipeline, and an air supply one-way valve is provided on the first external air supply pipeline.

11. The water-saving, dust-removing, and cooling control system for tunneling and anchoring equipment according to claim 1 or 2, characterized in that, The water-saving and dust-removing cooling control system for tunneling and anchoring equipment also includes a dust removal water circuit connected to the cooler for removing dust from the working environment of the tunneling and anchoring equipment. The dust removal water circuit includes a main dust removal water circuit and branch dust removal water circuits connected to the main dust removal water circuit. The water-saving and dust-removing cooling control system for tunneling and anchoring equipment also includes a foam dust suppression device. The branch dust suppression water circuit includes a foam dust suppression water circuit connected to the foam dust suppression device. A first reversing valve is installed on the foam dust suppression water circuit. The foam dust suppression device is also connected to a second external air supply pipeline. A second reversing valve is connected between the second external air supply pipeline and the first reversing valve. The second reversing valve and the first reversing valve are coaxial valves, so that the second reversing valve controls the operation of the first reversing valve.

12. The water-saving, dust-removing, and cooling control system for tunneling and anchoring equipment according to claim 1 or 2, characterized in that, The water-saving and dust-removing cooling control system for tunneling and anchoring equipment also includes a dust removal water circuit connected to the cooler for removing dust from the working environment of the tunneling and anchoring equipment. The dust removal water circuit includes a main dust removal water circuit and branch dust removal water circuits connected to the main dust removal water circuit. The branch dust removal water circuit includes a conveyor dust removal water circuit for connecting to the conveyor. A third reversing valve is installed on the conveyor dust removal water circuit. The water-saving and dust-removing cooling control system for tunneling and anchoring equipment also includes a foam dust suppression device. The foam dust suppression device is connected to a second external air supply pipeline. A fourth reversing valve is connected between the second external air supply pipeline and the third reversing valve. The third and fourth reversing valves are coaxial valves, so that the operation of the third reversing valve is controlled by the fourth reversing valve.

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