Inlet multi-stage filter explosion-proof motor housing

Abstract

The present invention discloses an air intake multi-stage filtering explosion-proof motor housing, and relates to the technical field of dust filtering devices. The present invention comprises a housing body, and a ventilation channel is fixedly arranged inside the housing body; a dust filter assembly is fixedly connected to a surface of the housing body through a connector, and one end of the air outlet of the dust filter assembly is connected to the ventilation channel; the dust filter assembly comprises an ash discharge tank and a dust filter tank; the top surface of the ash discharge tank is fixedly connected to the dust filter tank through a connector; the side surface of the ash discharge tank is fixedly connected to a miscellaneous air inlet pipe; one end of the air outlet of the miscellaneous air inlet pipe extends to the inside of the ash discharge tank. The present invention, through the side air outlet design and the movable design of the filter element, can automatically discharge the trapped impurities through the vibration dust removal principle under the action of the motor vibration and the reset spring, and through the design of the ash cleaning port, it can also use the recoil principle to quickly clean the filter element and the multi-stage filter plate online, thereby reducing the maintenance difficulty and use cost of the device.

Description

Technical Field

[0001] The invention belongs to the technical field of dust filtering devices, and in particular relates to a flameproof motor casing. Background Art

[0002] At present, self-ventilated motors are favored by motor users for their simple structure, easy maintenance, low noise and small space occupation, and thus have been widely used. However, the tiny particles in the cooling air entering will damage the insulation of the motor windings and affect the life of the motor. Therefore, the dust removal structure and device of the self-ventilated motor, as well as its dust removal effect, have attracted widespread attention. This is especially important for flameproof motors.

[0003] Most of the existing explosion-proof motors rely on a dust hood at the air inlet to meet the requirements of clean cooling air. The existing dust hood structure is to set several layers of filter screens at the air inlet, and fill the middle of the filter screen with dense dust filtering materials to achieve a certain dust filtering effect. However, its structure is complicated, and dust easily blocks the filter screen after entering, which is not easy to remove, so it is difficult to maintain and has high cost. To solve this problem, a patent document with publication number CN201410528940.8 discloses a motor air inlet dust filtering device, in which a ventilation flow channel is set inside the motor and connected to the filtering device, but the dust filtering device is an open filtering structure, so the filtering and dust removal effects are limited. Summary of the invention

[0004] The object of the present invention is to provide an air intake multi-stage filtering flameproof motor housing, which solves the problem of poor filtering effect of the existing motor housing dust filtering device through the design of the dust filtering component.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is an air intake multi-stage filtering explosion-proof motor housing, comprising a housing body, wherein a ventilation channel is fixedly arranged inside the housing body; a dust filter assembly is fixedly connected to a surface of the housing body through a connecting piece, and one end of an air outlet of the dust filter assembly is communicated with the ventilation channel; the dust filter assembly comprises an ash discharge tank and a dust filter tank; the top surface of the ash discharge tank is fixedly connected to the dust filter tank through a connecting piece; a stray air inlet pipe is fixedly communicated with the circumferential side surface of the ash discharge tank; one end of an air outlet of the stray air inlet pipe extends to the interior of the ash discharge tank; a multi-stage filter plate is fixedly installed between the stray air inlet pipe and the opposite surface of the ash discharge tank;

[0007] The dust filter tank is fixedly connected to a clean air outlet pipe on the peripheral side; one end of the clean air outlet pipe is connected to the ventilation channel through a pipe; a group of first guide rods and a group of second guide rods are respectively installed inside the dust filter tank; an upper air collecting hood is slidably connected to the peripheral side of the first guide rod; a lower air collecting hood is slidably connected to the peripheral side of the second guide rod; a group of filter elements and a group of connecting rods are respectively fixedly installed between the relative surfaces of the upper and lower air collecting hoods; the peripheral sides of the first and second guide rods are both sleeved with return springs; the peripheral side of the upper air collecting hood is slidably connected to the dust discharge tank through a seal; the peripheral side of the lower air collecting hood is slidably connected to the dust filter tank through a seal; and a cleaning port is fixedly provided on the top of the dust filter tank.

[0008] Furthermore, a valve is fixedly installed at the position of the dust filter tank corresponding to the ash cleaning port; an ash discharge port is fixedly arranged at the bottom of the ash discharge tank; and the ash cleaning port is coaxial with the ash discharge port.

[0009] Furthermore, sealing rings are provided at the sliding connection between the upper air collecting hood and the ash discharge tank, and at the sliding connection between the lower air collecting hood and the dust filter tank.

[0010] Furthermore, the filter element is a hollow structure with openings at both ends; the connecting rod is located outside the filter element; and the inside of the filter element is fixedly filled with activated carbon filter material.

[0011] Furthermore, the filter element is located directly above the multi-stage filter plate; and a chamfer is fixedly provided on the rear end surface of the mixed air inlet pipe.

[0012] Furthermore, the mixed air inlet pipe and the clean air outlet pipe are respectively located on both sides of the dust filter assembly.

[0013] The present invention has the following beneficial effects:

[0014] The present invention adopts the side air outlet design and the movable design of the filter element, and can automatically discharge the trapped impurities through the vibration dust removal principle under the action of the motor vibration and the return spring. At the same time, through the design of the cleaning port, the recoil principle can be utilized to quickly clean the filter element and the multi-stage filter plate online, thereby reducing the maintenance difficulty and the use cost of the device. Through the parallel design of the multi-stage filter plate and the ground, on the one hand, multi-stage filtration of stray air can be achieved, and on the other hand, the trapped impurities can be automatically discharged under the action of gravity, thereby effectively avoiding clogging of the filter plate.

[0015] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 It is a structural diagram of the air intake multi-stage filtering flameproof motor housing;

[0018] Figure 2 It is a schematic diagram of the internal structure of the dust filter component;

[0019] Figure 3 It is a schematic diagram of the structure of an upper air collecting hood, a lower air collecting hood, a filter element, a connecting rod, a first guide rod, a second guide rod and a return spring;

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1-housing body, 2-dust filter assembly, 201-ash discharge tank, 202-dust filter tank, 203-mixed air inlet pipe, 204-multi-stage filter plate, 205-clean air outlet pipe, 206-first guide rod, 207-second guide rod, 208-upper air collecting hood, 209-lower air collecting hood, 210-filter element, 211-connecting rod, 212-reset spring, 213-ash cleaning port, 214-valve, 215-ash discharge port. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-3 The present invention is an air intake multi-stage filtering flameproof motor housing, comprising a housing body 1, a ventilation channel is fixedly arranged inside the housing body 1, the ventilation channel is arranged above the motor stator and avoids the stator winding and the rotor, one end of the ventilation channel air outlet faces the inside of the motor, and then is discharged to the outside of the motor together with the fan and the cooling wind, which is equivalent to separating dust from cold air, and the dust bypasses the stator winding and the rotor, and the cold air passes through the stator winding and the rotor, and then is discharged together, so it plays a role in dust removal protection. The position and structure of the above-mentioned ventilation channel have been disclosed in existing documents and will not be repeated here. A dust filter component 2 is fixedly connected to one surface of the housing body 1 through a bracket and other connecting parts, and one end of the air outlet of the dust filter component 2 is connected to the ventilation channel;

[0024] The dust filter assembly 2 includes an ash discharge tank 201 and a dust filter tank 202; the top surface of the ash discharge tank 201 is fixedly connected to the dust filter tank 202 by screws and other connectors; the side surface of the ash discharge tank 201 is fixedly connected to a miscellaneous air inlet pipe 203; one end of the air outlet of the miscellaneous air inlet pipe 203 extends to the interior of the ash discharge tank 201; a multi-stage filter plate 204 is fixedly installed between the opposite surfaces of the miscellaneous air inlet pipe 203 and the ash discharge tank 201;

[0025] The multi-stage filter plate 204 is a physical filter plate. The multi-stage filter plate 204 is provided to perform multi-stage filtration on large particles or other impurities. The multi-stage filter plate 204 includes a first filter plate and a second filter plate from top to bottom. The filter aperture of the first filter plate is smaller than the filter aperture of the second filter plate. Since the multi-stage filter plates 204 are arranged parallel to the ground, the impurities filtered by the multi-stage filter plates 204 can be automatically discharged through the ash discharge port 215 under the action of gravity.

[0026] A clean air outlet pipe 205 is fixedly connected to the side surface of the dust filter tank 202; one end of the clean air outlet pipe 205 is connected to the ventilation channel through a pipeline; a group of first guide rods 206 and a group of second guide rods 207 are respectively installed inside the dust filter tank 202; the upper air collecting hood 208 is slidably connected to the side surface of the first guide rod 206; the lower air collecting hood 209 is slidably connected to the side surface of the second guide rod 207; a group of filter elements 210 and a group of connecting rods 211 are respectively fixedly installed between the relative surfaces of the upper air collecting hood 208 and the lower air collecting hood 209; the side surfaces of the first guide rod 206 and the second guide rod 207 are both sleeved with return springs 212; the side surfaces of the upper air collecting hood 208 are slidably connected to the dust discharge tank 201 through a sealing ring; the side surfaces of the lower air collecting hood 209 are slidably connected to the dust filter tank 202 through a sealing ring; and a cleaning port 213 is fixedly provided on the top of the dust filter tank 202.

[0027] Among them Figure 2 As shown, a valve 214 is fixedly installed at the position of the dust filter tank 202 corresponding to the ash cleaning port 213 ; an ash discharge port 215 is fixedly provided at the bottom of the ash discharge tank 201 ; and the ash cleaning port 213 is coaxial with the ash discharge port 215 .

[0028] Among them, sealing rings are provided at the sliding connection between the upper air collecting hood 208 and the ash discharge tank 201, and at the sliding connection between the lower air collecting hood 209 and the dust filter tank 202. The sealing rings are designed to ensure the sealing of the above sliding connections.

[0029] The filter element 210 is a hollow structure with openings at both ends; the connecting rod 211 is located outside the filter element 210; the inside of the filter element 210 is fixedly filled with activated carbon filter material, and the particles are filtered through the activated carbon filter material;

[0030] The filter element 210 is located directly above the multi-stage filter plate 204; the rear end surface of the mixed air inlet pipe 203 is fixedly provided with a chamfer, and the impurities in the incoming air can be naturally precipitated after being shielded by the chamfered inclined surface.

[0031] Among them, the mixed air inlet pipe 203 and the clean air outlet pipe 205 are respectively located on both sides of the dust filter component 2.

[0032] A specific application of this embodiment is: the motor housing is equipped with a dust filter assembly 2 on the basis of a traditional housing. When the dust filter assembly 2 is in use, the valve 214 is in a closed state, and the stray air enters the ash discharge tank 201 through the stray air inlet pipe 203. The stray air entering the ash discharge tank 201 is physically filtered in multiple stages by the multi-stage filter plate 204, and the filtered impurities can be automatically discharged through the ash discharge port 215 under the action of gravity. The stray air filtered by the multi-stage filter plate 204 then enters the filter element 210 through the lower air collecting hood 209, and the filter element 210 finally filters the particles in the stray air. The impurities filtered by the filter element 210 are eventually transformed into clean air, and the clean air finally enters the ventilation channel in the motor housing through the clean air outlet pipe 205. When the dust filter component 2 is working, due to the combined action of the motor vibration and the reset spring 212, the impurities trapped by the filter element 210 and the multi-stage filter plate 204 will be automatically discharged through the ash discharge port 215 under the action of vibration and gravity, thereby realizing a certain self-cleaning function. When external cleaning is required, the valve 214 can be opened in time, and the ash cleaning port 213 can be connected to the external high-pressure air injection equipment, and then the dust filter component 2 can be cleaned through the recoil principle.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An air intake multi-stage filtering flameproof motor housing, comprising a housing body (1), wherein a ventilation channel is fixedly arranged inside the housing body (1); a dust filter assembly (2) is fixedly connected to one surface of the housing body (1) via a connecting piece, and one end of the air outlet of the dust filter assembly (2) is connected to the ventilation channel, characterized in that: The dust filter assembly (2) comprises an ash discharge tank (201) and a dust filter tank (202); the top surface of the ash discharge tank (201) is fixedly connected to the dust filter tank (202) via a connecting piece; the circumferential side surface of the ash discharge tank (201) is fixedly connected to a mixed air inlet pipe (203); one end of the air outlet of the mixed air inlet pipe (203) extends into the interior of the ash discharge tank (201); a multi-stage filter plate (204) is fixedly installed between the opposing surfaces of the mixed air inlet pipe (203) and the ash discharge tank (201); A clean air outlet pipe (205) is fixedly connected to the side surface of the dust filter tank (202); one end of the clean air outlet pipe (205) is connected to the ventilation channel through a pipeline; a group of first guide rods (206) and a group of second guide rods (207) are respectively installed inside the dust filter tank (202); an upper air collecting hood (208) is slidably connected to the side surface of the first guide rod (206); a lower air collecting hood (209) is slidably connected to the side surface of the second guide rod (207); the upper air collecting hood (208) and the lower air collecting hood (209) are slidably connected to the side surface of the second guide rod (207); A group of filter elements (210) and a group of connecting rods (211) are fixedly installed between the opposite surfaces of the air hood (209); the first guide rod (206) and the second guide rod (207) are sleeved with return springs (212) on their circumferential sides; the circumferential side of the upper air collecting hood (208) is slidably connected to the dust discharge tank (201) via a seal; the circumferential side of the lower air collecting hood (209) is slidably connected to the dust filter tank (202) via a seal; and a dust cleaning port (213) is fixedly provided on the top of the dust filter tank (202); A valve (214) is fixedly installed at a position of the dust filter tank (202) corresponding to the ash cleaning port (213); an ash discharge port (215) is fixedly arranged at the bottom of the ash discharge tank (201); the ash cleaning port (213) is coaxial with the ash discharge port (215); The sliding connection between the upper air collecting hood (208) and the dust discharge tank (201), and the sliding connection between the lower air collecting hood (209) and the dust filter tank (202) are both provided with sealing rings; The filter element (210) is a hollow structure with openings at both ends; the connecting rod (211) is located outside the filter element (210); the interior of the filter element (210) is fixedly filled with activated carbon filter material; The filter element (210) is located directly above the multi-stage filter plate (204); and a chamfer is fixedly provided on the rear end surface of the mixed air inlet pipe (203).

2. The air intake multi-stage filtering flameproof motor housing according to claim 1 is characterized in that: The mixed air inlet pipe (203) and the clean air outlet pipe (205) are respectively located on both sides of the dust filter assembly (2).

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