Constant-pressure water supply system for drill jumbo

Abstract

The utility model relates to the technical field of constant-pressure water supply, and provides a drill jumbo constant-pressure water supply system which comprises a water supply pipe, the water supply pipe is sequentially connected with an electric control valve, a first pressure sensor, a booster water pump, a second pressure sensor and a rock drill, and the electric control valve is electrically connected with a first processor used for processing control signals. The first pressure sensor is electrically connected with a second processor used for processing water pressure signals, the second processor is further electrically connected with the booster water pump and the second pressure sensor, the first pressure sensor and the second pressure sensor detect the water pressure signals and jointly act on the second processor to control the booster water pump to work at the stable rotating speed, and constant-pressure water supply is achieved. And safety, energy saving and environmental protection.

Description

Technical Field

[0001] The utility model relates to the technical field of constant pressure water supply, in particular to a constant pressure water supply system for a rock drilling trolley. Background Art

[0002] During the construction of the rock drilling rig, it is necessary to connect high-pressure water to the drill rod end of the rock drill. The high-pressure water will reach the drill bit through the inner hole of the drill rod, and use the impact force to bring the drill cuttings out of the rock hole to achieve the effects of slag removal, dust reduction and cooling the drill bit. On-site construction usually connects the rock drill to the booster pump and ball valve in turn and then connects to the tap water network to achieve water supply. The system can be manually closed or opened, but on the premise of meeting the actual construction needs, the water supply should be as small as possible. The existing construction water supply is controlled by the tap water network, which cannot meet the requirements of constant pressure water supply, and there are problems of energy waste and construction safety hazards. Utility Model Content

[0003] The utility model aims to provide a constant pressure water supply system for a rock drilling trolley to solve the above technical problems.

[0004] The embodiment of the utility model is realized through the following technical scheme: a constant pressure water supply system for a rock drilling trolley comprises a water supply pipe, which is sequentially connected to an electric regulating valve, a water inlet block, a booster water pump, a water outlet block and a rock drill, the electric regulating valve is electrically connected to a first processor for processing a control signal, the water inlet block is provided with a first pressure sensor, the water outlet block is provided with a second pressure sensor, the booster water pump is electrically connected to a second processor for processing a water pressure signal, and the first pressure sensor and the second pressure sensor are both electrically connected to the second processor.

[0005] Furthermore, the first processor is connected to a knob, which is arranged on an operation panel of the drilling rig.

[0006] Furthermore, the electric regulating valve is an electric V-type ball valve.

[0007] Furthermore, the water outlet block is connected to a safety valve for overflow.

[0008] Preferably, the overflow port of the safety valve is backflow connected to the water supply pipe.

[0009] Furthermore, the water outlet pressure of the rock drill is greater than 1.2 MPa.

[0010] The utility model has at least the following advantages and beneficial effects: the water pressure signal detected by the first pressure sensor and the second pressure sensor act together on the second processor to control the booster pump to operate at a stable speed, thereby achieving constant pressure water supply, safety, energy saving and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 A structural schematic diagram of a constant pressure water supply system for a rock drilling trolley provided by the utility model;

[0013] Icons: 1- water supply pipe, 2- electric regulating valve, 3- water inlet block, 30- first pressure sensor, 4- booster pump, 5- water outlet block, 50- second pressure sensor, 6- rock drill, 7- first processor, 8- second processor, 9- knob, 10- safety valve. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] Example

[0017] like Figure 1As shown, in this embodiment, a constant pressure water supply system for a rock drilling trolley is mainly disclosed, which can provide a constant pressure water supply for the rock drilling trolley to impact and clean the drill cuttings, bring the drill cuttings out of the rock hole, and play the role of dust reduction and cooling the drill bit. Its main structure includes a water supply pipe 1, one end of the water supply pipe 1 is connected to the tap water network at the construction site, and the other end is connected in sequence to an electric regulating valve 2, a water inlet block 3, a booster pump 4, a water outlet block 5 and a rock drill 6, so that the water supply is conducted to the rock drill 6 to realize the operation, wherein the electric regulating valve 2 is electrically connected to a first processor 7 for processing a control signal, which can control the opening of the electric regulating valve 2, and then control the inlet supply Water volume. When the water supply volume is constant, the water supply flow rate can be controlled by adjusting the opening of the electric regulating valve 2, and then the water supply pressure can be adjusted. A first pressure sensor 30 is provided on the water inlet block 3, and a second pressure sensor 50 is provided on the water outlet block 5. The booster water pump 4 is electrically connected to a second processor 8 for processing the water pressure signal. The first pressure sensor 30 and the second pressure sensor 50 are both electrically connected to the input end of the second processor 8. It should be noted that the electric regulating valve 2 can be an electric V-type ball valve with small fluid resistance, compact and reliable structure and convenient maintenance. In addition, the water outlet pressure of the rock drill 6 should be maintained greater than 1.2MPa to meet the working requirements.

[0018] Furthermore, in the specific implementation, if Figure 1 As shown, the first processor 7 provided in the embodiment of the utility model is connected to a knob 9, which is arranged on the operating panel of the drilling rig, so that the drilling rig operator can control and adjust the water supply in time according to the on-site construction conditions.

[0019] Furthermore, in the specific implementation, if Figure 1 As shown, the water outlet block 5 provided in the embodiment of the utility model is connected to a safety valve 10 for overflow. When the water pressure entering the rock drill 6 is too high, it can overflow in time to ensure the stability and safety of operation. The overflow port of the safety valve 10 is refluxed and connected to the water supply pipe 1, which can effectively reduce the waste of water resources.

[0020] The specific working mode of the utility model is that the rock drill 6 equipped on the rock drilling trolley will give an approximate range of required water volume according to its construction hole diameter, hole depth and geological range. The rock drilling trolley operator adjusts the rotary knob 9 according to the specific construction hole diameter, hole depth, rock slag state and the like. The control signal of the knob 9 is processed by the first processor 7 and converted into a control electrical signal for controlling the electric regulating valve 2, thereby adjusting the opening size of the electric regulating valve 2. Assuming that the electric regulating valve 2 is fully opened, the water supply is 10 cubic meters / hour. Now the opening of the electric regulating valve 2 is reduced. The same amount of water flow must pass through a narrower valve, and the water flow rate must be accelerated. After the water flow rate is accelerated, the back pressure will increase. The first pressure sensor 30 detects the water pressure change signal, which is processed by the second processor 8 and converted into a control signal. The control electrical signal of the booster water pump 4 controls the rotation speed of the booster water pump 4. When the second pressure sensor 50 detects that the water pressure is greater than 1.2MPa, the water pressure signal of the second pressure sensor 50 is transmitted to the second processor 8 and converted into a control electrical signal for controlling the booster water pump 4, so as to reduce the rotation speed of the booster water pump 4 and weaken the boosting effect, thereby achieving environmentally friendly and energy-saving water supply. When the second pressure sensor 50 detects that the water pressure is 1.2MPa, the water pressure signal of the second pressure sensor 50 is transmitted to the second processor 8 and is also converted into a control electrical signal for controlling the booster water pump 4, which acts together with the pressure signal of the first pressure sensor 30 on the booster water pump 4 to make it work stably at a rotation speed. At this time, the water supply of the water supply system will be reduced, and the water supply pressure will be maintained at the set value to achieve a dynamic balance.

[0021] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A constant pressure water supply system for a rock drilling rig, It is characterized in that The invention comprises a water supply pipe (1), wherein the water supply pipe (1) is sequentially connected to an electric regulating valve (2), a water inlet block (3), a booster water pump (4), a water outlet block (5) and a rock drill (6); the electric regulating valve (2) is electrically connected to a first processor (7) for processing control signals; the water inlet block (3) is provided with a first pressure sensor (30); the water outlet block (5) is provided with a second pressure sensor (50); the booster water pump (4) is electrically connected to a second processor (8) for processing water pressure signals; and the first pressure sensor (30) and the second pressure sensor (50) are both electrically connected to the second processor (8).

2. A constant pressure water supply system for a drilling rig as claimed in claim 1, It is characterized in that The first processor (7) is connected to a knob (9), and the knob (9) is arranged on the operating panel of the rock drilling trolley.

3. A constant pressure water supply system for a drilling rig as claimed in claim 1, It is characterized in that The electric regulating valve (2) is an electric V-shaped ball valve.

4. A constant pressure water supply system for a drilling rig as claimed in claim 1, It is characterized in that The water outlet block (5) is connected to a safety valve (10) for overflow.

5. A constant pressure water supply system for a drilling rig as claimed in claim 4, It is characterized in that The overflow port of the safety valve (10) is backflow connected to the water supply pipe (1).

6. A constant pressure water supply system for a drilling rig as claimed in claim 1, It is characterized in that The water outlet pressure of the rock drill (6) is greater than 1.2 MPa.

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