Anti-static device for coal mine electrical automation equipment

Abstract

The invention belongs to the technical field of coal mine equipment static electricity elimination, and aims to solve the problem that the existing anti-static method is not ideal in elimination effect on static electricity generated on the surface of equipment. According to the anti-static device for the coal mine electrical automation equipment, a lead screw sliding block mechanism is installed in an inner cavity of a containing base, the directions of threads on the two sides of the middle of a lead screw in the lead screw sliding block mechanism are opposite, the two sides of the middle of the lead screw are each in threaded connection with a sliding block, and the upper end of each sliding block is connected with a first conductive plate; the outer side ends of the first conductive plates are connected with a grounding wire, and a space for clamping electrical equipment is formed between the two first conductive plates; the air ionization device comprises a power supply and a second conductive plate, the power supply is electrically connected with the second conductive plate and the controller, the electrometer is electrically connected with the controller, and the controller is an external controller; the pure water spraying device is used for spraying pure water to the surface of the electrical equipment. According to the invention, through combination of three modes of power connection, air ionization and pure water spraying, static elimination on the surface of the equipment is realized.

Description

Technical Field

[0001] The invention belongs to the technical field of anti-static electricity removal for coal mine equipment, and in particular relates to an anti-static device for coal mine electrical automation equipment. Background Art

[0002] Static electricity exists on many insulating objects in coal mines. Plastic shell products used in coal mines are prone to static electricity. When the human body or other metal objects touch the plastic shell, static electricity discharge will occur. When the energy is large enough, it may cause gas or coal dust in the coal mine, with serious consequences. With the accelerated construction of intelligent coal mines and the increase in intelligent products in coal mines, static electricity may cause breakdown damage to electronic chips, inverters, resistors, capacitors and other precision electronic components.

[0003] At present, there are two common anti-static methods and measures in coal mines:

[0004] 1. For products with metal casings, the method of grounding through the casing;

[0005] 2. Products with non-metallic shells are generally coated with antistatic materials on the surface of the shell.

[0006] However, due to the special working and mining conditions underground, the above antistatic methods are not ideal for eliminating static electricity that has already been generated on the surface of the equipment. Summary of the invention

[0007] In order to solve at least one of the above technical problems existing in the prior art, the present invention provides an anti-static device for coal mine electrical automation equipment.

[0008] The present invention is implemented by the following technical scheme: an anti-static device for coal mine electrical automation equipment, comprising an auxiliary grounding device, an ionized air device, a pure water spraying device, a controller and an electrostatic meter; the auxiliary grounding device comprises a receiving base, a first conductive plate, a grounding wire and a lead screw slider mechanism; the lead screw slider mechanism is installed in the inner cavity of the receiving base, the thread directions of the two sides of the middle of the lead screw in the lead screw slider mechanism are opposite, and a slider is threadedly connected to both sides of the middle of the lead screw, and the upper end of each slider is connected to a first conductive plate, the outer end of the first conductive plate is connected to the grounding wire, and a space for clamping the electrical equipment is formed between the two first conductive plates, and the motor of the lead screw slider mechanism is electrically connected to the controller; the ionized air device comprises a power supply and a second conductive plate, the power supply is electrically connected to the second conductive plate and the controller, the electrostatic meter is electrically connected to the controller, and the controller is an external controller; the pure water spraying device is used to spray pure water onto the surface of the electrical equipment, the upper end of the receiving base is connected to a support plate through a support, and the ionized air device and the pure water spraying device are both arranged on the support plate.

[0009] Preferably, the screw slider mechanism includes a screw, a slider and a motor, the screw includes two sections of threaded rods with opposite threads, one end of the screw is connected to the output end of the motor, and the other end is rotatably connected to the inner cavity wall of the accommodating base, the motor is installed in the inner cavity of the accommodating base, the slider is connected to the first conductive plate through a connecting rod, and a sliding groove is provided on the upper surface of the accommodating base at a position corresponding to the sliding path of the connecting rod.

[0010] Preferably, the power supply and the second conductive plate of the ionized air device are fixed to the upper and lower ends of the support plate respectively, and at least two ionized air devices are arranged outside the electrical equipment, and the electrometer is arranged on the surface of the electrical equipment.

[0011] Preferably, the pure water spraying device includes a pure water tank, a water pump, a diversion pipe, a water mist nozzle and a connecting pipe. The pure water tank is fixed at the upper end of the support plate, the water pump is built into the water tank, the two ends of the connecting pipe are respectively connected to the water pump and the diversion pipe, and the front end of each pipe of the diversion pipe is connected to a water mist nozzle, and the water outlet end of the water mist nozzle points to the surface of the electrical equipment.

[0012] Preferably, a water collecting tank is provided on the accommodating base, and the water collecting tank is located below the water mist nozzle.

[0013] Preferably, the sliding groove is located in the middle of the two water collecting grooves, the sliding groove is arranged in parallel with the water collecting grooves, and a plurality of water mist nozzles are arranged at intervals along the length direction of the water collecting grooves.

[0014] Preferably, the two first conductive plates are symmetrically arranged relative to the center point of the sliding groove, a bearing seat is arranged in the inner cavity of the accommodating base, and one end of the lead screw is rotatably mounted on the bearing seat through a bearing.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The device adjusts the position of the first conductive plate and the ground wire by adjusting the components, so that the electrical equipment can always remain in a grounded state, thereby eliminating static electricity. The second conductive plate can form a weak electric field after injecting charge. The weak electric field ionizes the air, so that the gas molecules or atoms in the air are charged, and promotes the neutralization of static electricity, thereby performing secondary elimination of the static electricity generated by the electrical equipment body and the static electricity in the air. At the same time, pure water is sprayed onto the surface of the electrical equipment body through a water mist nozzle, reducing the resistance of the surface of the electrical equipment body, allowing static electricity to flow, and reducing static electricity accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 Schematic diagram of the three-dimensional structure of this embodiment;

[0019] Figure 2 is a front cross-sectional structural schematic diagram of the present embodiment;

[0020] Figure 3 It is a side view cross-sectional structural schematic diagram of this embodiment.

[0021] In the figure: 101-accommodating base; 102-first conductive plate; 103-grounding wire; 104-screw; 105-slider; 106-motor; 107-water collecting tank; 108-sliding slot; 201-power supply; 202-second conductive plate; 301-pure water tank; 302-water pump; 303-shunt pipe; 304-water mist nozzle; 305-connecting pipe; 4-electrostatic meter; 5-pillar; 6-support plate; 7-electrical equipment. DETAILED DESCRIPTION

[0022] In conjunction with the drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention. It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0024] The present invention provides an embodiment:

[0025] like Figures 1 to 3As shown, an anti-static device for coal mine electrical automation equipment includes an auxiliary grounding device, an ionized air device, a pure water spraying device, a controller and an electrostatic meter 4; the auxiliary grounding device includes a receiving base 101, a first conductive plate 102, a grounding wire 103 and a lead screw slider mechanism; the lead screw slider mechanism is installed in the inner cavity of the receiving base 101, the thread directions of the two sides of the middle of the lead screw 104 in the lead screw slider mechanism are opposite, and both sides of the middle of the lead screw 104 are threadedly connected with a slider 105, the upper end of each slider 105 is connected with a first conductive plate 102, the outer end of the first conductive plate 102 is connected to the grounding wire 103, and a space for clamping the electrical equipment is formed between the two first conductive plates 102, and the motor 106 of the lead screw slider mechanism is electrically connected to the controller;

[0026] The lead screw slider mechanism includes a lead screw 104, a slider 105 and a motor 106. The lead screw 104 includes two sections of threaded rods with opposite threads. One end of the lead screw 104 is connected to the output end of the motor 106. A bearing seat is provided in the inner cavity of the accommodating base 101. The other end of the lead screw 104 is rotatably mounted on the bearing seat through a bearing. The motor 106 is installed in the inner cavity of the accommodating base 101. The slider 105 is connected to the first conductive plate 102 through a connecting rod. A sliding groove 108 is provided at a position on the upper surface of the accommodating base 101 corresponding to the sliding path of the connecting rod. The two first conductive plates 102 are symmetrically arranged relative to the center point of the sliding groove 108. The distance between the two first conductive plates 102 is changed by driving the motor 106 to rotate forward and reverse, so that the two first conductive plates 102 always keep clamping the electrical equipment, so that the electrical equipment always keeps the grounding state, thereby eliminating static electricity, and can be applied to electrical equipment of different specifications.

[0027] In this embodiment, a thin-sheet pressure sensor may be provided at the upper end of the first conductive plate 102, and the end face of the sensor is flush with the contact end face of the first conductive plate 102 and the electrical device. When the first conductive plate 102 abuts against the electrical device, the pressure sensor simultaneously detects a pressure signal, which is transmitted to the controller to control the motor 106 to stop. Of course, in addition to this method, manually controlling the start and stop of the motor 106 can also achieve the purpose of keeping the electrical device in a grounded state at all times.

[0028] The ionized air device includes a power supply 201 and a second conductive plate 202, the power supply 201 is electrically connected to the second conductive plate 202 and the controller, the electrometer 4 is electrically connected to the controller, and the controller is an external controller; the power supply 201 and the second conductive plate 202 of the ionized air device are respectively fixed to the upper and lower ends of the support plate 6, and at least two ionized air devices are arranged on the outside of the electrical equipment, and the electrometer 4 is arranged on the surface of the electrical equipment.

[0029] The pure water spraying device is used to spray pure water on the surface of the electrical equipment. The upper end of the accommodating base 101 is connected to the support plate 6 through the support 5. The ionized air device and the pure water spraying device are both arranged on the support plate 6. The pure water spraying device includes a pure water tank 301, a water pump 302, a shunt pipe 303, a water mist nozzle 304 and a connecting pipe 305. The pure water tank 301 is fixed on the upper end of the support plate 6. The water pump 302 is built in the water tank 301. The two ends of the connecting pipe 305 are respectively connected to the water pump 302 and the shunt pipe 303. The front end of each pipe of the shunt pipe 303 is connected to the water mist nozzle 304, and the water outlet end of the water mist nozzle 304 points to the surface of the electrical equipment.

[0030] The present invention uses a water pump, a connecting pipe, a shunt pipe and a water mist nozzle to spray the pure water in the pure water tank onto the surface of the electrical equipment through the water mist nozzle. The sprayed atomized pure water can have a humidification effect, reduce the static electricity generated around the electrical equipment, and the pure water itself has almost no conductivity and will not affect the electrical equipment body. At the same time, the pure water can effectively absorb the heat generated by the equipment, thereby reducing the temperature of the equipment.

[0031] A water collecting trough 107 is provided on the accommodating base 101, and the water collecting trough 107 is located below the water mist nozzle 304; the sliding groove 108 is located between the two water collecting troughs 107, and the sliding groove 108 is arranged parallel to the water collecting trough 107, and a plurality of water mist nozzles 304 are arranged at intervals along the length direction of the water collecting trough 107.

[0032] Working principle:

[0033] The electrical device 7 is placed on the surface of the accommodating base 101, and the motor 106 is controlled to operate. The motor 106 drives the lead screw 104 to rotate, and drives the two sliders 105 and the first conductive plate 102 fixed on the upper end thereof to move. When the first conductive plate 102 is tightly fitted with the electrical device 7, the controller controls the motor 106 to stop operating, so that the electrical device is always kept in a grounded state, thereby eliminating static electricity.

[0034] When the electrometer 4 detects that the electrical device 7 generates static electricity, the controller controls the power supply 201 to provide electric charge to the second conductive plate 202, so that the second conductive plate 202 builds a weak electric field. The weak electric field ionizes the air, so that the gas molecules or atoms in the air are charged, and promotes the neutralization of static electricity, thereby eliminating the static electricity generated by the electrical device 7 and the static electricity in the air.

[0035] The controller controls the operation of the water pump 302, injects the pure water in the pure water tank 301 into the shunt pipe 303 through the connecting pipe 305, and sprays it to the surface of the electrical equipment 7 through the water mist nozzle 304, thereby reducing the resistance of the surface of the electrical equipment 7, allowing static charge to flow, and reducing static electricity accumulation.

[0036] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. An anti-static device for coal mine electrical automation equipment, characterized in that: It includes an auxiliary grounding device, an ionized air device, a pure water spraying device, a controller and an electrometer (4); The auxiliary grounding device comprises a receiving base (101), a first conductive plate (102), a grounding wire (103) and a lead screw slider mechanism; the lead screw slider mechanism is installed in the inner cavity of the receiving base (101); the thread directions of the two sides of the middle of the lead screw (104) in the lead screw slider mechanism are opposite, and both sides of the middle of the lead screw (104) are threadedly connected with a slider (105); the upper end of each slider (105) is connected with a first conductive plate (102); the outer end of the first conductive plate (102) is connected to the grounding wire (103); a space for clamping the electrical equipment is formed between the two first conductive plates (102); and the motor (106) of the lead screw slider mechanism is electrically connected to the controller; The ionized air device comprises a power supply (201) and a second conductive plate (202), the power supply (201) is electrically connected to the second conductive plate (202) and a controller, the electrometer (4) is electrically connected to the controller, and the controller is an external controller; The pure water spraying device is used to spray pure water onto the surface of the electrical equipment. The upper end of the accommodating base (101) is connected to a support plate (6) via a support (5). The ionized air device and the pure water spraying device are both arranged on the support plate (6).

2. The antistatic device for coal mine electrical automation equipment according to claim 1, characterized in that: The lead screw and slider mechanism comprises a lead screw (104), a slider (105) and a motor (106); the lead screw (104) comprises two sections of threaded rods with opposite threads; one end of the lead screw (104) is connected to the output end of the motor (106), and the other end is rotatably connected to the inner cavity wall of the accommodating base (101); the motor (106) is installed in the inner cavity of the accommodating base (101); the slider (105) is connected to the first conductive plate (102) through a connecting rod; and a sliding groove (108) is provided on the upper surface of the accommodating base (101) at a position corresponding to the sliding path of the connecting rod.

3. The antistatic device for coal mine electrical automation equipment according to claim 1, characterized in that: The power supply (201) and the second conductive plate (202) of the ionized air device are respectively fixed to the upper and lower ends of the support plate (6), and at least two ionized air devices are arranged outside the electrical equipment, and the electrometer (4) is arranged on the surface of the electrical equipment.

4. The antistatic device for coal mine electrical automation equipment according to claim 2, characterized in that: The pure water spraying device comprises a pure water tank (301), a water pump (302), a diversion pipe (303), a water mist nozzle (304) and a connecting pipe (305). The pure water tank (301) is fixed to the upper end of the support plate (6). The water pump (302) is built in the water tank (301). The two ends of the connecting pipe (305) are respectively connected to the water pump (302) and the diversion pipe (303). The front end of each pipe of the diversion pipe (303) is connected to the water mist nozzle (304). The water outlet end of the water mist nozzle (304) points to the surface of the electrical equipment.

5. The antistatic device for coal mine electrical automation equipment according to claim 4, characterized in that: A water collecting tank (107) is provided on the accommodating base (101), and the water collecting tank (107) is located below the water mist nozzle (304).

6. The antistatic device for coal mine electrical automation equipment according to claim 5, characterized in that: The sliding groove (108) is located in the middle of the two water collecting grooves (107). The sliding groove (108) is arranged in parallel with the water collecting grooves (107). A plurality of water mist nozzles (304) are arranged at intervals along the length direction of the water collecting grooves (107).

7. The antistatic device for coal mine electrical automation equipment according to claim 2, characterized in that: The two first conductive plates (102) are symmetrically arranged relative to the center point of the sliding groove (108); a bearing seat is arranged in the inner cavity of the accommodating base (101); and one end of the lead screw (104) is rotatably mounted on the bearing seat via a bearing.

Images