Bag-type dust collector for sealing top cover by using electromagnetic force

Abstract

The utility model discloses a bag-type dust collector using electromagnetic force to realize top cover sealing, which comprises a top cover and a cavity, a filter cloth filtering component is arranged in the cavity and used for realizing gas dust removal and filtration, a mounting groove is arranged on the periphery of the top of the cavity and used for mounting the top cover, a sealing gasket and a plurality of electromagnetic modules are arranged in the mounting groove, and the electromagnetic modules are arranged in the mounting groove. The sealing gasket is located above the electromagnetic modules, and each electromagnetic module is connected with a corresponding external control circuit through a cable; when the top cover needs to be closed, the top cover is mounted in the mounting groove, the electromagnetic module is electrified by utilizing an external control circuit so as to generate electromagnetic force, and the top cover presses the sealing pad under the action of self gravity and the electromagnetic force, so that the bag-type dust collector is tightly sealed; when the top cover needs to be opened, the external control circuit and the electromagnetic module are disconnected, the electromagnetic force disappears, and the top cover loosens the sealing gasket. The sealing device has the advantages of compact structure, safety, reliability, simplicity and convenience in operation, tight sealing and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of bag dust collectors, and in particular relates to a bag dust collector which utilizes electromagnetic force to achieve top cover sealing. Background Art

[0002] The flue gas generated by garbage incineration carries a large amount of particulate matter, and the industry usually uses bag dust collectors to intercept and remove the particulate matter. Bag dust collectors are prone to air leakage during long-term operation. Air leakage will make it difficult to maintain negative pressure in the system, increase the fan load and reduce the dust removal efficiency. During the cleaning operation, dust may be sprayed into the environment from the leakage point to cause pollution. In addition, the cold air in the environment leaks into the dust collector, which will cause the flue gas temperature to drop, resulting in condensation, bag sticking, and corrosion of the equipment body, which will endanger the safety of the equipment. Among them, since the top cover above the clean air chamber at the top of the dust collector is the main structure to isolate the cold air from the environment and the high-temperature flue gas in the dust collector, and it needs to be easy to open during inspection and maintenance, the top cover is a part with a higher risk of air leakage. Therefore, it is necessary to design a top cover sealing structure suitable for bag dust collectors to reduce the possibility of air leakage.

[0003] For example, Chinese patent application 202022348195.2 designs a double-layer top cover, which is fixed by a clamping rod and a locating pin, and the main gland components consisting of a gland nut, a threaded rod, a flange, etc. apply pressure to the top cover to complete the seal. However, since the threaded rods, locating pins and other components used need to be drilled in the top cover, leakage points may be formed. The delicate and complex structures such as pulleys, pull rings, pull ropes, springs, etc. used to open the top cover are prone to damage such as rust and breakage, which brings additional troubles to maintenance. In addition, the overall structure is complex and requires high processing accuracy.

[0004] For example, in Chinese patent application 202320602163.1, vertical plates and pressure plates are designed around the top cover, and nuts are used to lock the pressure plates to apply pressure to the top cover, and a simple structure is used to complete the seal. However, the pressure applied by each pressure plate is not uniform on the top cover and the gasket. If the distance between the two pressure plates is wide, the partial pressure between the pressure plates is small, and the sealing surface may deform, resulting in poor sealing and air leakage. If the distance between the pressure plates is reduced to ensure the sealing effect, a large number of nuts will be used to tighten, which is inconvenient to disassemble. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a bag dust collector which has high structural strength, is safe and reliable, is easy to operate, and is tightly sealed and utilizes electromagnetic force to achieve top cover sealing.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A bag dust collector that uses electromagnetic force to achieve top cover sealing, comprising: a top cover and a cavity, wherein a filter cloth filter assembly is provided in the cavity for achieving gas dust removal and filtration, an installation groove is provided on the outer periphery of the top of the cavity, the installation groove is used to install the top cover, a sealing gasket and a plurality of electromagnetic modules are provided in the installation groove, the sealing gasket is located above the electromagnetic module, and each of the electromagnetic modules is connected to a corresponding external control circuit through a cable; when the top cover needs to be closed, the top cover is installed in the installation groove, and the electromagnetic module is energized by using an external control circuit to generate electromagnetic force, and the top cover presses the sealing gasket under the action of its own gravity and electromagnetic force to achieve a tight sealing of the bag dust collector; when the top cover needs to be opened, the connection between the external control circuit and the electromagnetic module is disconnected, the electromagnetic force disappears, and the sealing gasket of the top cover is released.

[0008] As a further improvement of the present invention, the electromagnetic module is a rectangular rigid structure, and the width of the electromagnetic module matches the groove width of the installation groove.

[0009] As a further improvement of the present invention, the electromagnetic module is fixed to the bottom of the groove of the installation groove by fastening screws.

[0010] As a further improvement of the utility model, an electromagnetic coil is provided inside the electromagnetic module, and the cable of the electromagnetic coil is led out from the channel at the base of the installation slot and connected to an external control circuit; power is supplied to the electromagnetic coil through the external control circuit to generate electromagnetic force.

[0011] As a further improvement of the present invention, the number of turns of the electromagnetic coils in each electromagnetic module is the same or different.

[0012] As a further improvement of the present invention, the external control circuit includes: a power supply, a switch and a rheostat, the switch is located between the power supply and the rheostat, and the rheostat is connected to the electromagnetic coil in the electromagnetic module; by changing the resistance value of the rheostat, the current size is adjusted, and then the electromagnetic force size is adjusted.

[0013] As a further improvement of the present invention, the external control circuit further includes an indicator light, which is used to indicate whether the control circuit is on or off.

[0014] As a further improvement of the utility model, the interior of the cavity is divided into a clean air chamber and an ash hopper by a baffle, the clean air chamber is located above the ash hopper, an air outlet is provided on the side of the clean air chamber, and an air inlet is provided on the side of the ash hopper; a filter cloth filter assembly is provided in the ash hopper to realize gas dust removal and filtration, and an installation groove is provided on the outer periphery of the top of the clean air chamber.

[0015] As a further improvement of the utility model, the filter cloth filter assembly includes a pulse blowing pipe and a plurality of filter cloth bags, the pulse blowing pipe is installed in the clean air chamber, and the filter cloth bags are installed in the ash hopper.

[0016] Compared with the prior art, the advantages of the utility model are:

[0017] The utility model uses electromagnetic force to achieve the sealing of the top cover of the bag dust collector, by setting the filter cloth filter assembly in the cavity, realizes the gas dust removal and filtration; the outer periphery of the top of the cavity is provided with a mounting groove for installing the top cover, further, the mounting groove is provided with a sealing gasket and a plurality of electromagnetic modules, the sealing gasket is located above the electromagnetic module, each electromagnetic module is connected to the corresponding external control circuit through a cable, and each electromagnetic module is independently controlled on and off; when the top cover needs to be closed, the top cover is installed in the mounting groove, and the electromagnetic module is energized by the external control circuit to generate electromagnetic force, and the top cover presses the sealing gasket under the action of its own gravity and electromagnetic force, that is, the bag dust collector is sealed tightly; when the top cover needs to be opened, the connection between the external control circuit and the electromagnetic module is disconnected, the electromagnetic force disappears, and the top cover loosens the sealing gasket, realizing the bag dust collector opening; by using electromagnetic force to provide the pressure required for the sealing of the top cover, it is extremely simple to use. At the same time, by using multiple independent electromagnetic modules to provide electromagnetic force, by controlling the electromagnetic force of each electromagnetic module, a uniform pressure is provided to press the top cover and the sealing gasket, thereby ensuring the sealing effect. When it is necessary to open the top cover, the pressure can be quickly relieved by simply turning off the power, thus reducing the time and manpower required to open the top cover. The bag dust collector of the utility model has a simple overall structure and a stable sealing effect during operation. If a fault occurs, the fault point can be quickly located, making it easy to eliminate the defect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structural principle of a bag dust collector that uses electromagnetic force to achieve top cover sealing in a specific embodiment of the utility model.

[0019] Figure 2 for Figure 1 Schematic diagram of the structural principle at A in the middle.

[0020] Figure 3 It is a schematic diagram of the structural principle of the control circuit in a specific embodiment of the utility model.

[0021] Legend: 1. Installation slot; 2. Top cover; 3. Electromagnetic module; 31. Electromagnetic coil; 4. Sealing gasket; 5. Fastening screws; 6. Cavity; 61. Clean air chamber; 62. Ash hopper; 7. Filter bag; 8. Pulse jet pipe; 9. Air outlet; 10. Baffle; 11. Power supply; 12. Switch; 13. Rheostat; 14. Indicator light. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0023] In the description of the present invention, it should be understood that the terms "side", "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0025] Example

[0026] like Figures 1 to 3 As shown, the electromagnetic sealing top cover of the utility model includes a top cover 2 and a cavity 6. A filter cloth filter assembly is provided in the cavity 6 for realizing gas dust removal and filtration. An installation groove 1 is provided on the outer periphery of the top of the cavity 6. The installation groove 1 is used to install the top cover 2. A sealing gasket 4 and a plurality of electromagnetic modules 3 are provided in the installation groove 1. The sealing gasket 4 is laid above the electromagnetic module 3. The top cover 2 is covered on the installation groove 1, and its frame is embedded in the groove of the installation groove 1 and fits with the sealing gasket 4. Each electromagnetic module 3 is connected to the corresponding external control circuit through a cable. When the top cover 2 needs to be closed, the top cover 2 is installed in the installation groove 1, and the electromagnetic module 3 is energized by the external control circuit to generate electromagnetic force. The top cover 2 presses the sealing gasket 4 under the action of its own gravity and electromagnetic force to realize the bag filter cover sealing. When the top cover 2 needs to be opened, the connection between the external control circuit and the electromagnetic module 3 is disconnected, the electromagnetic force disappears, and the top cover 2 releases the sealing gasket 4.

[0027] In this embodiment, by setting a filter cloth filter assembly in the cavity 6, gas dust removal and filtration are achieved; an installation groove 1 is provided on the outer periphery of the top of the cavity 6 for installing the top cover 2. Further, a sealing gasket 4 and a plurality of electromagnetic modules 3 are provided in the installation groove 1. The sealing gasket 4 is located above the electromagnetic module 3. Each electromagnetic module 3 is connected to the corresponding external control circuit through a cable, and each electromagnetic module 3 is independently controlled to be on and off. When it is necessary to close the top cover 2, the top cover 2 is installed in the installation groove 1, and the electromagnetic module 3 is energized by the external control circuit to generate electromagnetic force. The top cover 2 presses the sealing gasket 4 under the action of its own gravity and electromagnetic force, and the bag dust collector is sealed tightly. When it is necessary to open the top cover 2, the connection between the external control circuit and the electromagnetic module 3 is disconnected, the electromagnetic force disappears, and the top cover 2 will loosen the sealing gasket 4, realizing the bag dust collector cover opening. By using electromagnetic force to provide the pressure required for the top cover 2 to seal, it is extremely simple to use. At the same time, by using multiple independent electromagnetic modules 3 to provide electromagnetic force, by controlling the electromagnetic force of each electromagnetic module 3, a uniform pressure is provided to compress the top cover 2 and the sealing gasket 4, thereby ensuring the sealing effect. When the top cover 2 needs to be opened, the pressure can be quickly released by simply turning off the power, thereby reducing the time and manpower required to open the top cover 2. The bag filter of this embodiment has a simple overall structure, a stable sealing effect during operation, and if a fault occurs, the fault point can be quickly located, which is convenient for eliminating the defect.

[0028] like Figure 2 As shown, the electromagnetic module 3 is a rectangular rigid structure, and the width of the electromagnetic module 3 matches the groove width of the installation groove 1. Further, the electromagnetic module 3 is fixed to the groove bottom of the installation groove 1 by fastening screws 5.

[0029] like Figure 2 As shown, an electromagnetic coil 31 is provided inside the electromagnetic module 3, and a channel is opened at the base of the mounting slot 1 for laying lines. The cable of the electromagnetic coil 31 is led out from the channel at the base of the mounting slot 1 and connected to an external control circuit; power is supplied to the electromagnetic coil 31 through the external control circuit to generate electromagnetic force.

[0030] Furthermore, the number of turns of the electromagnetic coils 31 in each electromagnetic module 3 may be the same or different, and the magnitude of the electromagnetic force can be adjusted by changing the number of turns of the coils to provide the required pressing force.

[0031] like Figure 3As shown, the external control circuit includes: a power supply 11, a switch 12 and a rheostat 13. The switch 12 is located between the power supply 11 and the rheostat 13, and is used to control the on and off of the circuit; the rheostat 13 is connected to the electromagnetic coil 31 in the electromagnetic module 3; by changing the resistance value of the rheostat 13, the current is adjusted, and then the electromagnetic force is adjusted. The electromagnetic modules 3 in the mounting slot 1 are multiple independent structures, which are respectively connected to the external power supply, and the external rheostat 13 is respectively connected in series to independently adjust the current of each electromagnetic module 3. Even if a single electromagnetic module 3 fails, it will not affect the normal operation of other electromagnetic modules 3.

[0032] Furthermore, the external control circuit also includes an indicator light 14, and the indicator light 14 is used to indicate whether the control circuit is on or off.

[0033] like Figure 1 As shown, the interior of the cavity 6 is divided into a clean air chamber 61 and an ash hopper 62 by a baffle 10. The clean air chamber 61 is located above the ash hopper 62. An air outlet 9 is provided on the side of the clean air chamber 61, and an air inlet is provided on the side of the ash hopper 62. A filter cloth filter assembly is provided in the ash hopper 62 to realize gas dust removal and filtration, and a mounting groove 1 is provided on the outer periphery of the top of the clean air chamber 61.

[0034] Furthermore, the filter cloth filter assembly includes a pulse blowing pipe 8 and a plurality of filter cloth bags 7. The pulse blowing pipe 8 is installed in the clean air chamber 61 and connected to an external pulse controller; the filter cloth bag 7 is installed in the ash hopper 62. The gas to be filtered passes through the filter cloth bag 7 from the ash hopper 62 and enters the filter cloth bag 7 for filtration, and the pulse blowing pipe 8 is periodically controlled by the pulse controller to perform pulse dust removal.

[0035] When the bag filter of this embodiment is in a normal sealed state, the electromagnetic module 3 is energized, and the magnetic field generated by the magnetic effect of the current attracts the top cover 2. At this time, the top cover 2 is subjected to the downward magnetic force and gravity, as well as the upward support force provided by the sealing gasket 4. The reaction force of the support force, that is, the pressure of the top cover 2 on the sealing gasket 4, is equal to the sum of the magnetic force and the gravity. The current can be adjusted by changing the resistance of the variable resistor 13 external to the electromagnetic module 3, thereby adjusting the magnetic force. Dynamically adjusting the current flowing through each electromagnetic module 3 can make each position of the top cover 2 apply uniform pressure to the sealing gasket 4 to ensure the sealing effect. When the bag filter needs to be repaired and the top cover 2 needs to be opened, it only needs to turn off the power to release the magnetic field, and then lift the top cover 2. It is easy to operate, which helps to shorten the maintenance period and save manpower.

[0036] The bag filter of this embodiment does not rely on traditional mechanical structures such as bolts for fastening and pressure application. Instead, it utilizes the magnetic field generated by the magnetic effect of the current to disperse and arrange a number of electromagnetic modules 3 around the installation slot 1, and provides a uniform magnetic field force by changing the number of coil turns, the current, etc. The top cover 2 presses the sealing gasket 4 downward under the action of the magnetic field force to achieve sealing, thereby avoiding deformation of the sealing gasket due to uneven force, which leads to poor sealing.

[0037] Although the utility model is disclosed as above with preferred embodiments, it is not intended to limit the utility model. Any technician familiar with the art can use the above disclosed methods and technical contents to make many possible changes and modifications to the technical solution of the utility model without departing from the spirit and technical solution of the utility model, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of protection of the technical solution.

Claims

1. A bag dust collector that uses electromagnetic force to achieve top cover sealing, characterized in that: include: A top cover (2) and a cavity (6), wherein a filter cloth filter assembly is arranged in the cavity (6) for realizing gas dust removal and filtration, an installation groove (1) is arranged on the outer periphery of the top of the cavity (6), wherein the installation groove (1) is used for installing the top cover (2), a sealing gasket (4) and a plurality of electromagnetic modules (3) are arranged in the installation groove (1), wherein the sealing gasket (4) is located above the electromagnetic module (3), and each of the electromagnetic modules (3) is connected to a corresponding external control circuit via a cable; when the top cover (2) needs to be closed, the top cover (2) is installed in the installation groove (1), and the electromagnetic module (3) is energized by using an external control circuit to generate an electromagnetic force, and the top cover (2) presses the sealing gasket (4) under the action of its own gravity and the electromagnetic force, thereby realizing a tight sealing of the bag filter cover; when the top cover (2) needs to be opened, the connection between the external control circuit and the electromagnetic module (3) is disconnected, the electromagnetic force disappears, and the top cover (2) releases the sealing gasket (4).

2. The bag dust collector using electromagnetic force to achieve top cover sealing according to claim 1, characterized in that: The electromagnetic module (3) is a rectangular rigid structure, and the width of the electromagnetic module (3) matches the groove width of the installation groove (1).

3. The bag dust collector using electromagnetic force to achieve top cover sealing according to claim 2, characterized in that: The electromagnetic module (3) is fixed to the bottom of the groove of the installation groove (1) by means of a fastening screw (5).

4. The bag dust collector using electromagnetic force to achieve top cover sealing according to claim 2, characterized in that: An electromagnetic coil (31) is provided inside the electromagnetic module (3), and a cable of the electromagnetic coil (31) is led out from a channel at the base of the installation slot (1) and connected to an external control circuit; power is supplied to the electromagnetic coil (31) through the external control circuit to generate electromagnetic force.

5. The bag dust collector using electromagnetic force to achieve top cover sealing according to claim 4, characterized in that: The number of turns of the electromagnetic coils (31) in each electromagnetic module (3) is the same or different.

6. The bag dust collector using electromagnetic force to achieve top cover sealing according to claim 4, characterized in that: The external control circuit comprises: a power supply (11), a switch (12) and a rheostat (13); the switch (12) is located between the power supply (11) and the rheostat (13); the rheostat (13) is connected to an electromagnetic coil (31) in an electromagnetic module (3); the current is adjusted by changing the resistance value of the rheostat (13), thereby adjusting the electromagnetic force.

7. The bag dust collector using electromagnetic force to achieve top cover sealing according to claim 6, characterized in that: The external control circuit also includes an indicator light (14), which is used to indicate whether the control circuit is on or off.

8. The bag filter for sealing the top cover by electromagnetic force according to any one of claims 1 to 7, characterized in that: The interior of the cavity (6) is divided into a clean air chamber (61) and an ash hopper (62) by a baffle (10); the clean air chamber (61) is located above the ash hopper (62); a gas outlet (9) is provided on the side of the clean air chamber (61); and a gas inlet is provided on the side of the ash hopper (62); a filter cloth filter assembly is provided in the ash hopper (62) for achieving gas dust removal and filtration; and a mounting groove (1) is provided on the outer periphery of the top of the clean air chamber (61).

9. The bag dust collector using electromagnetic force to achieve top cover sealing according to claim 8, characterized in that: The filter cloth filter assembly comprises a pulse blowing pipe (8) and a plurality of filter cloth bags (7); the pulse blowing pipe (8) is installed in the clean air chamber (61); and the filter cloth bags (7) are installed in the ash hopper (62).

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