CN210021486U

CN210021486U - Self-cleaning ventilation filter device and complete set of switch equipment of prefabricated substation

Info

Publication number: CN210021486U
Application number: CN201920270193.0U
Authority: CN
Inventors: 王鹏程; 仲照龙
Original assignee: Chint Electric Co Ltd
Current assignee: Chint Electric Co Ltd
Priority date: 2019-03-04
Filing date: 2019-03-04
Publication date: 2020-02-07
Anticipated expiration: 2029-03-04

Abstract

The utility model relates to the technical field of equipment, in particular to a self-cleaning ventilation filtering device, which comprises a cavity base, an exhaust wheel and a filter screen, wherein the cavity base comprises a wind wheel assembly cavity, the exhaust wheel comprises a plurality of blades, and the wind wheel assembly cavity is provided with an air inlet, an air outlet and a dust removal port; when the wind wheel assembly works, negative pressure is formed at the air outlet, so that cold air enters the wind wheel assembly cavity, the wind wheel is driven by airflow to rotate from the air inlet to the air outlet, the cold air filtered by the filter screen is discharged from the air outlet, and meanwhile, the fan blades scrape dust on the filter screen and bring the dust to the dust removal port for discharge; the self-cleaning ventilation filtering device can realize the filtration of air flowing through the filtering device and simultaneously discharge filtered dust and impurities out of the filtering device; the complete set of switch equipment of the pre-installed substation comprising the self-cleaning ventilation filtering device is reliable and stable in operation, and can discharge filtered dust and impurities without power failure maintenance.

Description

Self-cleaning ventilation filter device and complete set of switch equipment of prefabricated substation

Technical Field

The utility model relates to the technical field of equipment, concretely relates to automatically cleaning ventilation filter equipment and one kind include automatically cleaning ventilation filter equipment's prepackage type transformer substation's complete set switchgear.

Background

In a power transmission and transformation system, a large number of pre-installed substations are required to realize the transmission, conversion and distribution of electric energy, wherein a complete set of switchgear is an extremely important component. When a set of switchgear normally runs, a main electrical circuit (a passage formed by connecting a switching element, a conductor, a measuring device and the like) in the switchgear generates heat when a large current flows, if heat is not timely dissipated from the inside of the switchgear, the heat is accumulated to a certain degree, the internal element of the switchgear is damaged, a short-circuit accident caused by insulation damage occurs, the personal safety of an operator is injured when the switchgear is burnt, and a serious result is generated. Therefore, the complete set of switch equipment needs to be ventilated and radiated, and heat is discharged in time, which is an important factor for ensuring the normal operation of the equipment.

When the complete set of switch equipment is provided with the ventilation device for ventilation, if harmful substances such as dust, sundries, metal particles and the like contained around enter the switch cabinet body and are accumulated on the surfaces of conductors, electrical elements and the like, the influence on internal elements and the like is fatal, short-circuit accidents are easily caused by insulation damage caused by discharge and the like, and the complete set of switch equipment or personnel can be burnt; meanwhile, because the preassembled transformer substation is an outdoor product, the internal complete set of switchgear is more seriously affected than the complete set of switchgear installed in the civil transformer substation.

The last ventilation filter equipment who commonly uses of complete sets switchgear usually indicates to set up the one deck filter screen, and the material of filter screen is wire net or filter pulp to dust and debris with in the air filter and detach, but adopt wire net or filter pulp to ventilate filterable mode and have following problem more:

(1) after the filter screen is used for a certain period of time, a lot of dust and sundries can be accumulated on the upper portion of the filter screen to influence the ventilation effect, the ventilation quantity is gradually reduced, and if the filter screen is not cleaned in time, the normal and safe operation of the complete set of switch equipment is seriously influenced.

(2) When the door plate of the complete switch equipment is opened to remove dust and clean the filter device on the ventilation device, the operation without power outage can seriously affect the safety of operators and the normal operation of the equipment, so the maintenance without power outage is not allowed and strictly forbidden, and the continuity and the stability of power supply of a power system can be affected if the maintenance without power outage is carried out.

Disclosure of Invention

An object of the utility model is to overcome prior art's defect, provide a automatically cleaning ventilation filter equipment, it can realize the filtration of filter equipment of flowing through, realizes simultaneously will filtering off the dust and debris discharge filter equipment who crosses. The self-cleaning ventilation filter device ensures the cleanliness of the whole set of switchgear, ensures the reliable and stable operation of the whole set of switchgear, and can discharge filtered dust and sundries without power failure maintenance.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a self-cleaning ventilation filter device comprises a cavity base 2, an exhaust wheel 6 and a filter screen 13, wherein the cavity base 2 comprises a wind wheel assembly cavity 26, the wind wheel assembly cavity 26 is arranged in the middle of the cavity base 2, two ends of the wind wheel assembly cavity 26 are sealed, the exhaust wheel 6 is rotatably arranged in the wind wheel assembly cavity 26, two ends of the exhaust wheel are respectively pivoted with two ends of the wind wheel assembly cavity 26, the exhaust wheel 6 comprises a plurality of blades 22 distributed on the circumference of a rotating shaft of the exhaust wheel 6, an air inlet 15, an air outlet 12 and a dust removal port 17 which are respectively communicated with the wind wheel assembly cavity 26 are sequentially arranged on the ring side surface of the wind wheel assembly cavity 26, and the filter screen 13 is arranged at one end of the air outlet 12 connected with;

when the wind wheel assembly works, negative pressure is formed at the air outlet 12, so that cold air enters the wind wheel assembly cavity 26 from the air inlet 15, the air flow formed by the cold air enables the air exhaust wheel 6 to rotate from the air inlet 15 to the direction of the air outlet 12, the cold air filtered by the filter screen 13 is exhausted from the air outlet 12, and meanwhile, the fan blades 22 scrape dust on the filter screen 13 and bring the dust to the dust removal port 17 for exhaust.

Preferably, the width of the air inlet 15, the width of the air outlet 12 and the width of the dust removing opening 17 are all smaller than the width of the fan blades 22.

Preferably, the wind wheel assembly cavity 26 is a cylindrical cavity and comprises a first sealing arc surface 181 and a second sealing arc surface 16, the first sealing arc surface 181 is located between the dust removal opening 17 and the air exhaust opening 12, at least one fan blade 22 is in contact with the first sealing arc surface 181, the end of the fan blade is bent, the fan blade is tightly attached to the first sealing arc surface 181, the second sealing arc surface 16 is located between the air inlet 15 and the dust removal opening 17, and at least one fan blade 22 is in contact with the second sealing arc surface 16, the end of the fan blade is bent, and the fan blade is tightly attached to the second sealing arc surface 16.

Preferably, the plurality of blades 22 are simultaneously contacted with the first sealing arc surface 181, bent at the end and bent towards the exhaust outlet 12; the blades 22 are simultaneously contacted with the second sealing arc surface 16, the end parts of the blades are bent, and the blades are bent towards the dust removal opening 17.

Preferably, the bending degree of the end of each fan blade 22 decreases from the exhaust outlet 12 to the dust removing outlet 17 of the plurality of fan blades 22 contacting the first sealing arc surface 181; the plurality of fan blades 22 contacting the second sealing arc surface 16 are bent from the dust removing opening 17 to the air inlet 15, and the bending degree of the end part of each fan blade 22 is increased in sequence.

Preferably, the fan blades 22 respectively opposite to the dust removing opening 17, the air inlet 15 and the air outlet 12 are in a fully extended state.

Preferably, the wind wheel assembly cavity 26 further includes a second arc surface 140 and a third arc surface 180, the second arc surface 140 is disposed near the air inlet 15, the third arc surface 180 is disposed near the first sealing arc surface 181 of the wind wheel assembly cavity 26, and the second arc surface 140 and the third arc surface 180 form an inner side surface of the filter screen 13; the fan blade 22 in contact with the second arc surface 140 is in a fully extended state, the end of the fan blade 22 is in contact with the second arc surface 140, and the end of the fan blade 22 in contact with the third arc surface 180 is bent and bent toward the second arc surface 140.

Preferably, the plurality of blades 22 are simultaneously contacted with the third arc surface 180, and the bending degree of the end of each blade 22 is gradually reduced from the exhaust outlet 12 to the first sealing arc surface 181.

Preferably, the wind wheel assembly cavity 26 further includes a first arc surface 141, the first arc surface 141 is disposed between the air inlet 15 and the second arc surface 140, and the plurality of fan blades 22 opposite to the first arc surface 141 are in a fully extended state.

Preferably, the dust removal port 17 is opposite to the air exhaust port 12, the dust removal port 17 and the air exhaust port 12 are respectively positioned at the upper side and the lower side of the wind wheel assembly cavity 26, and the air inlet 15 is arranged between the dust removal port 17 and the air exhaust port 12; the wind wheel assembly cavity 26 comprises a first arc surface 141, a second arc surface 140, a third arc surface 180, a first sealing arc surface 181 and a second sealing arc surface 16, one end of the first arc surface 141 is connected with the air inlet 15, the other end of the first arc surface is connected with one end of the second arc surface 140, the other end of the second arc surface 140 is connected with one end of the third arc surface 180, the other end of the third arc surface 180 is connected with one end of the first sealing arc surface 181, the other end of the first sealing arc surface 181 is connected with the dust removal port 17, and two ends of the second sealing arc surface 16 are respectively connected with the air inlet 15 and the dust removal port 17;

the plurality of fan blades 22 are connected with the first arc surface 141 in a contact manner and the fan blades 22 are in a completely unfolded state, the plurality of fan blades 22 are connected with the second arc surface 140 in a contact manner and the fan blades 22 are in a completely unfolded state, the plurality of fan blades 22 are connected with the third arc surface 180 in a contact manner and the end portions of the fan blades 22 are bent, the plurality of fan blades 22 are connected with the first sealing arc surface 181 in a contact manner and the end portions of the fan blades 22 are bent, the plurality of fan blades 22 are connected with the second sealing arc surface 16 in a contact manner and the end portions of the fan blades 22 are bent, and the fan blades 22 corresponding to the air inlet 15 and the dust removal opening.

Preferably, the wind wheel assembly structure further comprises end covers 1, the two end covers 1 are respectively arranged at two ends of the cavity base 2 and respectively seal two ends of the wind wheel assembly cavity 26, and two ends of a rotating shaft of the exhaust wheel 6 are respectively in pivot connection with the two end covers 1.

Preferably, the dust remover also comprises a bottom plate 4 and a panel 7, wherein the bottom plate 4 is provided with an opening corresponding to the dust removing port 17, and the panel 7 is provided with an opening corresponding to the air inlet 15.

Preferably, the device also comprises a plurality of embedded parts 10 embedded on the cavity base 2, and the end cover 1, the bottom plate 4 and the panel 7 are respectively fixedly connected with the cavity base 2 through connecting screws and the embedded parts 10;

the insert 10 is of a dumbbell-shaped structure integrally and comprises insert end portions 25, insert connecting portions 23 and insert threaded holes 24, the two insert end portions 25 are arranged at two ends of each insert connecting portion 23 respectively and are connected with the insert connecting portions respectively, the insert threaded holes 24 are axially arranged in the middle of the insert 10, the insert end portions 25 are of a polygonal cylinder structure, and annular clamping grooves 230 are formed between the two insert end portions 25 and on the side of the ring of each insert connecting portion 23.

Preferably, the exhaust wheel 6 includes a blade mounting shaft 19, blades 22 and pivots 20, the two pivots 20 are respectively disposed at two ends of the blade mounting shaft 19, the pivots 20 and the blade mounting shaft 19 constitute a rotating shaft of the exhaust wheel 6, and the blades 22 are uniformly distributed on the circumferential direction of the blade mounting shaft 19.

Preferably, the wind deflector 6 further comprises a circular shaft 21, the circular shaft 21 is disposed between the blade mounting shaft 19 and the pivot 20, and the diameter of the pivot 20 < the diameter of the circular shaft 21 < the blade mounting shaft 19.

A complete set of switch equipment of a pre-installed transformer substation comprises any one of the self-cleaning ventilation filter devices, wherein an air outlet 12 of the self-cleaning ventilation filter device is communicated with the interior of the complete set of switch equipment, and negative pressure is formed in the air outlet 12 when an exhaust fan of the complete set of switch equipment exhausts air.

The utility model discloses an automatically cleaning ventilation filter equipment, it includes the cavity base, arranges wind wheel and filter screen, arranges the wind wheel and is rotating the in-process, and its flabellum can strike off the dust on the filter screen and take to the discharge of dust removal mouth department, has guaranteed the unobstructed cleanliness factor of filter screen and has guaranteed via the cold air of air exit exhaust, has realized moreover the utility model discloses automatically cleaning ventilation filter equipment's self-cleaning function to be favorable to guaranteeing by the inside cleanness of cooling arrangement, improve equipment's job stabilization nature, the too high problem of temperature in the equipment can not take place, arrange the wind wheel moreover and be driven by the air current and rotate, need not to set up the drive and arrange wind wheel pivoted equipment, for example the motor, be favorable to simplifying the utility model discloses automatically cleaning filter equipment's structure, and the energy. The utility model discloses a complete set of switchgear of prepackage type transformer substation, include automatically cleaning ventilation filter equipment has guaranteed the cleanliness that gets into the inside cold air of complete set of switchgear, avoids or is showing the possibility that reduces dust and debris and get into complete set of switchgear inside to guarantee the inside cleanness of complete set of switchgear, guarantee the reliable steady operation of complete set of switchgear, make its inside temperature obtain reliable control.

Drawings

FIG. 1 is a schematic structural view of the self-cleaning ventilation filter apparatus of the present invention, showing at least the air inlet;

FIG. 2 is a schematic structural view of the self-cleaning ventilation filter apparatus of the present invention, showing at least the dust removal port;

FIG. 3 is a schematic structural view of the self-cleaning ventilation filter apparatus of the present invention, showing at least the air outlet;

FIG. 4 is a schematic structural view of the self-cleaning ventilation filter device of the present invention, showing the positional relationship of the air inlet, the air outlet, the dust removal port, and the wind exhaust wheel;

fig. 5 is a schematic structural diagram of the cavity base of the present invention, which at least shows the position relationship of the first arc surface 141, the second arc surface 140, the third arc surface 180, the first sealing arc surface 181 and the second sealing arc surface 16;

FIG. 6 is a schematic structural view of the row wind wheel of the present invention;

fig. 7 is another schematic structural diagram of the row wind wheel of the present invention;

fig. 8 is a schematic structural view of the insert of the present invention, showing at least the connection relationship of the end portion of the insert and the connecting portion of the insert;

fig. 9 is a schematic view of the construction of the inventive insert, showing at least the shape of the end of the insert;

fig. 10 is a schematic view of the insert of the present invention showing at least the insert threaded holes.

Detailed Description

The following description of the embodiments of the self-cleaning ventilating and filtering device of the present invention will be made with reference to the accompanying drawings 1-10. The self-cleaning ventilation filter device of the present invention is not limited to the description of the following embodiments.

The utility model discloses a self-cleaning ventilation filter equipment, it includes cavity base 2, exhaust wheel 6 and filter screen 13, cavity base 2 includes wind wheel assembly chamber 26, wind wheel assembly chamber 26 sets up in cavity base 2 middle part and wind wheel assembly chamber 26 both ends are sealed, exhaust wheel 6 rotates to set up in wind wheel assembly chamber 26 and both ends respectively with wind wheel assembly chamber 26 both ends pivot link to each other, exhaust wheel 6 includes the flabellum 22 of the circumference of multi-disc distribution in its pivot, be equipped with respectively rather than communicating air intake 15 on the ring side of wind wheel assembly chamber 26 in proper order, air exit 12 and dust removal 17, filter screen 13 sets up on the one end of air exit 12 that links to each other with wind wheel assembly chamber 26;

when the wind wheel assembly works, negative pressure is formed at the air outlet 12, so that cold air enters the wind wheel assembly cavity 26 from the air inlet, airflow formed by the cold air enables the air exhaust wheel 6 to rotate from the air inlet 15 to the direction of the air outlet 12, the cold air filtered by the filter screen 13 is exhausted from the air outlet 12, and meanwhile, the fan 22 scrapes dust on the filter screen 13 and brings the dust to the dust removal port 17 for exhaust.

The utility model discloses a self-cleaning ventilation filter equipment, it includes cavity base 2, exhaust wheel 6 and filter screen 13, arranges wind wheel 6 and rotates the in-process, and its flabellum 22 can strike off the dust on the filter screen 13 and take to the discharge of dust removal mouth 17 department, has guaranteed filter screen 13 unobstructed and guaranteed the cleanliness factor via exhaust outlet 12 exhaust cold air, has realized moreover the utility model discloses self-cleaning ventilation filter equipment's self-cleaning function to be favorable to guaranteeing by the inside clean of cooling arrangement, improve equipment's job stabilization nature, the too high problem of temperature in can not taking place equipment, arrange wind wheel 6 and drive the rotation by the air current, need not to set up drive row wind wheel 6 pivoted equipment, for example the motor, be favorable to simplifying the utility model discloses self-cleaning filter equipment's structure, and the energy saving.

As shown in fig. 1-5, in one embodiment of the self-cleaning ventilating filter device of the present invention, the self-cleaning ventilating filter device is preferably used in a switchgear assembly in a pre-installed substation.

The utility model discloses a automatically cleaning ventilation filter equipment, it includes cavity base 2, exhaust wheel 6 and filter screen 13, cavity base 2 includes wind wheel assembly chamber 26, wind wheel assembly chamber 26 sets up and is sealed at 2 middle parts of cavity base and 26 both ends in wind wheel assembly chamber, exhaust wheel 6 rotates to set up in wind wheel assembly chamber 26 and both ends respectively with wind wheel assembly chamber 26 both ends pivot continuous, exhaust wheel 6 includes the flabellum 22 of the circumference of multi-disc distribution in its pivot, be equipped with respectively rather than communicating air intake 15 on the ring side in wind wheel assembly chamber 26 in proper order, air exit 12 and dust removal 17, filter screen 13 sets up and serves at one of air exit 12 that links to each other with wind wheel assembly chamber 26. Specifically, as the direction shown in fig. 4 to left side, right side, upside, the downside of fig. 4 are self-cleaning ventilation filter equipment's left side, right side, upside, downside respectively, cavity base 2 wholly becomes the cuboid structure, and it is including setting up the wind wheel assembly chamber 26 in its middle part, and air intake 15 sets up in wind wheel assembly chamber 26 left side and communicates with each other, and air exit 12, dust removal mouth 17 set up respectively at upside, the downside of wind wheel assembly chamber 26 and communicate with each other with wind wheel assembly chamber 26 respectively, and filter screen 13 sets up at air exit 12 lower extreme (namely the one end that links to each other with wind wheel assembly chamber 26 of air exit 12).

Preferably, the width of the air inlet 15, the width of the air outlet 12 and the width of the dust removing opening 17 are smaller than the width of the fan blade 22, and when the fan blade 22 rotates the air inlet 15, the air outlet 12 and the dust removing opening 17, the air inlet 15, the air outlet 12 and the dust removing opening 17 can be covered. That is, the space formed by the fan blades 22, the fan blade mounting shaft 19 and the two end covers 1, which are located at the two sides of the air inlet 15, can cover the air inlet 15, that is, the air inlet 15 is correspondingly matched with the space; the space formed by the fan blades 22, the fan blade mounting shafts 19 and the two end covers 1 positioned at the two sides of the air outlet 12 can cover the air outlet 12, namely the air outlet 12 is correspondingly matched with the space; the space formed by the fan blades 22 positioned at the two sides of the dust removing opening 17, the fan blade mounting shaft 19 and the two end covers 1 can cover the dust removing opening 17, namely the dust removing opening 17 is correspondingly matched with the space.

Preferably, as shown in fig. 4 and 5, the wind wheel assembly cavity 26 is a cylindrical cavity and includes a first sealing arc surface 181 and a second sealing arc surface 16, the first sealing arc surface 181 is located between the dust removal port 17 and the air exhaust port 12, at least one fan blade 22 contacts with the first sealing arc surface 181, the end portion of the fan blade is bent, and the fan blade is tightly attached to the first sealing arc surface 181, the second sealing arc surface 16 is located between the air inlet 15 and the dust removal port 17, and at least one fan blade 22 contacts with the second sealing arc surface 16, the end portion of the fan blade is bent, and the fan blade is tightly attached to the second sealing arc surface 16.

Preferably, the center line of the first sealing arc surface 181 is offset from the rotation axis of the exhaust wheel 6, and the center line of the second sealing arc surface 16 is offset from the rotation axis of the exhaust wheel 6. Further, as shown in fig. 4 and 5, the center line of the first sealing arc surface 181 is located on the right side below the rotation axis of the row wind wheel 6, and the center line of the second sealing arc surface 16 is located on the left side above the rotation axis of the row wind wheel 6.

Preferably, as shown in fig. 4-5, the plurality of blades 22 are simultaneously contacted with the first sealing arc surface 181, the end parts of the blades are bent, and the blades are bent towards the air outlet 12; the blades 22 are simultaneously contacted with the second sealing arc surface 16, the end parts of the blades are bent, and the blades are bent towards the dust removal opening 17. The end of the fan blade 22 contacting the first sealing arc surface 181 and the second sealing arc surface 16 is bent, which is beneficial to increase the contact area between the fan blade and the arc surface and improve the sealing effect. Further, as shown in fig. 4, the end portions of the plurality of fan blades 22 contacting the first sealing arc surface 181 are sequentially bent to a smaller extent from the exhaust outlet 12 to the dust removing outlet 17; the plurality of fan blades 22 contacting the second sealing arc surface 16 are bent from the dust removing opening 17 to the air inlet 15, and the bending degree of the end part of each fan blade 22 is increased in sequence. Above-mentioned design is favorable to when guaranteeing sealed effect, and the frictional force of row wind wheel 6 and first sealed arc surface 181, the sealed arc surface 16 of second reduces as far as possible, guarantees the more smooth rotation of row wind wheel 6.

Preferably, as shown in fig. 4 and 5, the dust removing opening 17 is in a funnel shape, the width of the upper end of the dust removing opening 17 is greater than the width of the lower end, that is, the width of the end of the dust removing opening 17 connected to the wind wheel assembly chamber 26 is greater than the width of the end of the dust removing opening 17 communicated with the outside, and the width of the air inlet 15 is in a funnel shape, the width of the left end of the air inlet 15 is greater than the width of the right end, that is, the width of the end of the air inlet 15 connected to the wind wheel assembly chamber.

The self-cleaning ventilation filtering device of the utility model forms negative pressure at the air outlet 12 when working, because the fan blade 22 is respectively closely attached to the first sealing arc surface 181 and the second sealing arc surface 16, namely the dust outlet 17 is isolated from the air outlet 12 and the dust outlet 17 is isolated from the air inlet 15, therefore, under the action of the negative pressure at the air outlet 12, cold air is sucked into the wind wheel assembly cavity 26 from the air inlet 15, the air flow formed by the cold air pushes the fan blade 22 close to the air inlet 15 to rotate towards the air outlet 12 (as shown in figure 4, the wind discharging wheel 6 rotates anticlockwise under the driving of the air flow), then the clean cold air is discharged from the air outlet 12 through the filter screen 3, the dust and sundries in the filtered air are scraped off by the fan blade 22, meanwhile, the fan blade 22 carrying the dust and sundries continues to rotate to the dust outlet 17, the blades 22 are not in contact with each other when reaching the vicinity of the dust removing opening, and the dust and the sundries are discharged through the dust removing opening 17 under the action of the inertia force and the gravity.

Preferably, as shown in fig. 4, the fan blades 22 respectively opposite to the dust removing opening 17 and the air inlet 15 are in a fully extended state. The design is favorable for further reducing the friction force between the exhaust wind wheel 6 and the wind wheel assembly cavity 26, and further ensures the smooth rotation of the exhaust wind wheel 6.

Preferably, as shown in fig. 4 to 5, the wind wheel assembly cavity 26 further includes a second arc surface 140 and a third arc surface 180, the second arc surface 140 is disposed near the air inlet 15, the third arc surface 180 is disposed near the first sealing arc surface 181 of the wind wheel assembly cavity 26, and the second arc surface 140 and the third arc surface 180 form an inner side surface of the filter screen 13; the fan blade 22 in contact with the second arc surface 140 is in a fully extended state, and the end of the fan blade 22 is in contact with the second arc surface 140, and the end of the fan blade 22 in contact with the third arc surface 180 is bent and bent toward the second arc surface 140. Specifically, as shown in the direction of fig. 5, the left side, the right side, the upper side and the lower side of fig. 5 are respectively the left side, the right side, the upper side and the lower side of the self-cleaning ventilation filtering device, taking the side facing the reader in fig. 5 as the front side of the self-cleaning ventilation filtering device, and the other side as the rear side, the second arc surface 140 and the third arc surface 180 are both located on the upper side of the wind wheel assembly cavity 26, the left end of the second arc surface 140 is smoothly connected with the right end of the third arc surface 180, the left end of the third arc surface 180 is smoothly connected with the upper end of the first sealing arc surface 181, the second arc surface 140 and the third arc surface 180 form the inner side surface of the filter screen 13, the filter screen 13 is located in the middle of the whole of the second arc surface 140 and the third arc surface 180, and the second arc surface 140 and the third arc surface 180 comprise the inner side surface of the whole filter screen 13 and partial side surfaces of the wind wheel assembly cavity 26, which are located on the front side and the rear side of the filter screen 13. It should be noted that the fan blade 22 in contact with the second arc surface 140 is in a fully extended state, that is, a gap is not provided between the fan blade 22 and the second arc surface 140, but a certain contact force needs to be ensured between the fan blade 22 and the second arc surface 140 to ensure that the fan blade 22 can scrape off dust and impurities on the second arc surface 140.

Preferably, as shown in fig. 4, the plurality of blades 22 are simultaneously in contact with the third arc surface 180, and the bending degree of the end of each blade 22 is gradually reduced from the exhaust outlet 12 to the first sealing arc surface 181. The design can ensure that the dust and the sundries scraped by the fan blades 22 are reliably kept between the fan blades 22 so as to transport the dust and the sundries to the dust removal opening 17, and at the dust removal opening 17, the fan blades 22 are restored to the fully extended state again, so that the dust and the sundries are discharged through the dust removal opening 17 under the action of gravity.

Preferably, the center line of the third arc surface 180 is offset from the rotation axis of the exhaust wheel 6. Further, as shown in fig. 4 and 5, the center line of the third circular arc surface 180 is located below and to the right of the rotation axis of the row wind wheel 6.

Preferably, as shown in fig. 4 and 5, the wind wheel assembly cavity 26 further includes a first arc surface 141, the first arc surface 141 is disposed between the air inlet 15 and the second arc surface 140, and the plurality of fan blades 22 opposite to the first arc surface 141 are in a fully extended state. Specifically, as shown in fig. 4 and 5, the lower end of the first arc surface 141 is connected to the air inlet 15, and the upper end is smoothly connected to the right end of the second arc surface 140.

Preferably, the center lines of the first arc surface 141 and the second arc surface 140 are the same as the rotation axis of the exhaust wheel 6.

It should be noted that the first arc surface 141, the first sealing arc surface 181, and the second sealing arc surface 16 of the wind wheel assembly cavity 26 are smooth, that is, the smoothness of the first arc surface 141, the first sealing arc surface 181, and the second sealing arc surface 16 must be above a certain value, so that the sealing effect of the first sealing arc surface 181 and the second sealing arc surface 16 is ensured, and the friction between the fan blades and the three is reduced, the exhaust wheel 6 is smoothly rotated, the abrasion of the fan blades 22 of the exhaust wheel 6 is reduced, and the service life of the fan blades 22 is prolonged.

Preferably, as shown in fig. 1-3, the self-cleaning ventilation filter device of the present invention further comprises end caps 1, wherein the two end caps 1 are respectively disposed at two ends of the cavity base 2 and respectively seal two ends of the wind wheel assembly cavity 26, and two ends of the rotating shaft of the wind wheel 6 are respectively pivotally connected to the two end caps 1.

Preferably, as shown in fig. 1-4, the self-cleaning ventilation filter device of the present invention further comprises a bottom plate 4 and a panel 7, wherein the bottom plate 4 is provided with an opening corresponding to the dust removing opening 17, and the panel 7 is provided with an opening corresponding to the air inlet 15.

Preferably, as shown in fig. 1-5 and 8-10, the self-cleaning ventilation filter device of the present invention further comprises a plurality of inserts 10 embedded on the cavity base 2, and the end cap 1, the bottom plate 4 and the face plate 7 are respectively fixedly connected with the cavity base 2 through the connecting screws and the inserts 10. Further, as shown in fig. 8-10, the insert 10 is integrally formed in a dumbbell-shaped structure, which includes two insert end portions 25, an insert connecting portion 23 and an insert threaded hole 24, the two insert end portions 25 are respectively disposed at two ends of the insert connecting portion 23 and respectively connected thereto, the insert threaded hole 24 is axially disposed in the middle of the insert 10, the insert end portions 25 are in a polygonal cylinder structure, and an annular clamping groove 230 is disposed between the two insert end portions 25 and at a ring side of the insert connecting portion 23. The end 25 of the insert is a polygonal cylinder structure, which can ensure that the insert 10 will not rotate relative to the cavity base 2, and the shape-changing slot 230 ensures that the insert 10 will not be pulled out of the cavity base 2.

Preferably, the insert 10 is made of a metal material to ensure the strength of the insert 10, for example, the insert 10 may be made of a steel material.

Preferably, as shown in fig. 6 and 7, the exhaust wheel 6 includes a blade mounting shaft 19, blades 22 and pivots 20, two pivots 20 are respectively disposed at two ends of the blade mounting shaft 19, the pivots 20 and the blade mounting shaft 19 constitute a rotation axis of the exhaust wheel 6, and the blades 22 are uniformly distributed on the circumferential direction of the blade mounting shaft 19. Further, as shown in fig. 6 and 7, the wind expelling wheel 6 further includes a circular shaft 21, the circular shaft 21 is disposed between the blade mounting shaft 19 and the pivot shaft 20, and the diameter of the pivot shaft 20 < the diameter of the circular shaft 21 < the diameter of the blade mounting shaft 19. The round shaft 21 is beneficial to reducing the friction force between the rotating shaft of the exhaust wheel 6 and the end cover 1.

Preferably, the fan blade 22 is made of an elastic and wear-resistant material, for example, the fan blade 22 is made of rubber.

The utility model discloses a self-cleaning ventilation filter equipment, it can realize following function:

(1) the common ventilation and filtration function can be realized, namely, the air entering the complete set of switch equipment through the ventilation device is filtered and cleaned;

(2) the foreign matters such as dust and the like accumulated on the filter screen during filtering are automatically cleaned and discharged to the outside of the filter device;

(3) the ventilation and filtration device works without additional power, and the ventilation and filtration device works normally by the power of air when the air enters the device;

(4) the maintenance-free, long-working-condition and full-life work of the ventilation filtering device is realized.

The utility model also discloses a complete set of switchgear of prepackage type transformer substation, it includes arbitrary automatically cleaning ventilation filter equipment, automatically cleaning ventilation filter equipment's air exit 12 communicates with each other with complete set of switchgear is inside, during complete set of switchgear's exhaust fan, makes and forms the negative pressure in the air exit 12.

The utility model discloses a complete set of switchgear of prepackage type transformer substation, include automatically cleaning ventilation filter equipment has guaranteed the cleanliness that gets into the inside cold air of complete set of switchgear, avoids or is showing the possibility that reduces dust and debris and get into complete set of switchgear inside to guarantee the inside cleanness of complete set of switchgear, guarantee the reliable steady operation of complete set of switchgear, make its inside temperature obtain reliable control.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. A self-cleaning ventilation filtering device is characterized by comprising a cavity base (2), an exhaust wheel (6) and a filter screen (13), wherein the cavity base (2) comprises a wind wheel assembly cavity (26), the wind wheel assembly cavity (26) is arranged in the middle of the cavity base (2), two ends of the wind wheel assembly cavity (26) are sealed, the exhaust wheel (6) is rotatably arranged in the wind wheel assembly cavity (26), two ends of the exhaust wheel are respectively and pivotally connected with two ends of the wind wheel assembly cavity (26), the exhaust wheel (6) comprises a plurality of fan blades (22) distributed in the circumferential direction of a rotating shaft of the exhaust wheel (6), an air inlet (15), an air outlet (12) and a dust removal port (17) which are respectively communicated with the exhaust wheel assembly cavity (12) are sequentially arranged on the side surface of the ring of the wind wheel assembly cavity (26), and the filter screen (13) is arranged at one end of the air outlet;

during operation, negative pressure is formed at the air outlet (12), so that cold air enters the wind wheel assembly cavity (26) from the air inlet (15), the wind wheel (6) rotates towards the air outlet (12) from the air inlet (15) due to airflow formed by the cold air, the cold air filtered by the filter screen (13) is discharged from the air outlet (12), and meanwhile, dust on the filter screen (13) is scraped by the fan blades (22) and is discharged from the dust removing port (17).

2. A self-cleaning ventilation filter arrangement as claimed in claim 1, wherein: the width of the air inlet (15), the width of the air outlet (12) and the width of the dust removal port (17) are all smaller than the width of the fan blades (22).

3. A self-cleaning ventilation filter arrangement as claimed in claim 2, wherein: wind wheel assembly chamber (26) is a cylindricality cavity, and it includes first sealed arc surface (181) and second sealed arc surface (16), and first sealed arc surface (181) are located between dust removal mouth (17) and air exit (12), and crooked takes place for at least a slice flabellum (22) and first sealed arc surface (181) contact and tip, and closely laminate with first sealed arc surface (181), and second sealed arc surface (16) are located between air intake (15) and dust removal mouth (17), and at least a slice flabellum (22) and second sealed arc surface (16) contact and tip take place to bend, and closely laminate with second sealed arc surface (16).

4. A self-cleaning ventilation filter arrangement according to claim 3, wherein: the fan blades (22) are simultaneously contacted with the first sealing arc surface (181), the end parts of the fan blades are bent, and the fan blades are bent towards the direction of the air outlet (12); the fan blades (22) are simultaneously contacted with the second sealing arc surface (16), the end parts of the fan blades are bent, and the fan blades are bent towards the direction of the dust removal opening (17).

5. A self-cleaning ventilation filter arrangement as claimed in claim 4, wherein: the plurality of fan blades (22) contacted with the first sealing arc surface (181) are arranged from the air outlet (12) to the dust removing port (17), and the bending degree of the end part of each fan blade (22) is reduced in sequence; the plurality of fan blades (22) contacted with the second sealing arc surface (16) are bent from the dust removing opening (17) to the air inlet (15), and the bending degree of the end part of each fan blade (22) is increased in sequence.

6. A self-cleaning ventilation filter arrangement as claimed in claim 2, wherein: the fan blades (22) which are respectively opposite to the dust removal opening (17), the air inlet (15) and the air outlet (12) are in a completely extended state.

7. A self-cleaning ventilation filter arrangement as claimed in claim 1, wherein: the wind wheel assembly cavity (26) further comprises a second arc surface (140) and a third arc surface (180), the second arc surface (140) is arranged close to the air inlet (15), the third arc surface (180) is arranged close to a first sealing arc surface (181) of the wind wheel assembly cavity (26), and the second arc surface (140) and the third arc surface (180) form the inner side surface of the filter screen (13); the fan blade (22) in contact with the second arc surface (140) is in a fully extended state, the end part of the fan blade (22) is in contact connection with the second arc surface (140), and the end part of the fan blade (22) in contact with the third arc surface (180) is bent and bent towards the second arc surface (140).

8. A self-cleaning ventilation filter arrangement as claimed in claim 7, wherein: the plurality of fan blades (22) are simultaneously contacted with the third arc surface (180), and the bending degree of the end part of each fan blade (22) is sequentially reduced from the air outlet (12) to the first sealing arc surface (181).

9. A self-cleaning ventilation filter arrangement as claimed in claim 7, wherein: the wind wheel assembly cavity (26) further comprises a first arc surface (141), the first arc surface (141) is arranged between the air inlet (15) and the second arc surface (140), and the plurality of fan blades (22) opposite to the first arc surface (141) are in a completely unfolded state.

10. A self-cleaning ventilation filter arrangement as claimed in claim 1, wherein: the dust removal port (17) and the air exhaust port (12) are arranged oppositely, the dust removal port (17) and the air exhaust port (12) are respectively positioned at the upper side and the lower side of the wind wheel assembly cavity (26), and the air inlet (15) is arranged between the dust removal port (17) and the air exhaust port (12); the wind wheel assembly cavity (26) comprises a first arc surface (141), a second arc surface (140), a third arc surface (180), a first sealing arc surface (181) and a second sealing arc surface (16), one end of the first arc surface (141) is connected with the air inlet (15), the other end of the first arc surface is connected with one end of the second arc surface (140), the other end of the second arc surface (140) is connected with one end of the third arc surface (180), the other end of the third arc surface (180) is connected with one end of the first sealing arc surface (181), the other end of the first sealing arc surface (181) is connected with the dust removal port (17), and two ends of the second sealing arc surface (16) are respectively connected with the air inlet (15) and the dust removal port (17);

the multi-blade fan blade (22) is connected with the first arc surface (141) in a contact mode and the fan blade (22) is in a completely unfolded state, the multi-blade fan blade (22) is connected with the second arc surface (140) in a contact mode and the fan blade (22) is in a completely unfolded state, the multi-blade fan blade (22) is connected with the third arc surface (180) in a contact mode and the end portion of the fan blade (22) is bent, the multi-blade fan blade (22) is connected with the first sealing arc surface (181) in a contact mode and the end portion of the fan blade (22) is bent, the multi-blade fan blade (22) is connected with the second sealing arc surface (16) in a contact mode and the end portion of the fan blade (22) is bent, and the fan blade (22) corresponding to the air inlet (.

11. A self-cleaning ventilation filter arrangement as claimed in claim 1, wherein: the wind wheel air exhaust device is characterized by further comprising end covers (1), the two end covers (1) are respectively arranged at two ends of the cavity base (2) and respectively seal two ends of the wind wheel assembly cavity (26), and two ends of a rotating shaft of the air exhaust wheel (6) are respectively in pivot connection with the two end covers (1).

12. A self-cleaning ventilation filter arrangement according to claim 11, wherein: the dust collector is characterized by further comprising a bottom plate (4) and a panel (7), wherein the bottom plate (4) is provided with a hole corresponding to the dust removal port (17), and the panel (7) is provided with a hole corresponding to the air inlet (15).

13. A self-cleaning ventilation filter arrangement according to claim 12, wherein: the cavity comprises a cavity base (2) and is characterized by further comprising a plurality of embedded parts (10) embedded on the cavity base (2), wherein the end cover (1), the bottom plate (4) and the panel (7) are fixedly connected with the cavity base (2) through connecting screws and the embedded parts (10) respectively;

the embedded part (10) is integrally of a dumbbell-shaped structure and comprises embedded part end portions (25), embedded part connecting portions (23) and embedded part threaded holes (24), the two embedded part end portions (25) are respectively arranged at two ends of the embedded part connecting portions (23) and are respectively connected with the embedded part connecting portions, the embedded part threaded holes (24) are axially arranged in the middle of the embedded part (10), the embedded part end portions (25) are of polygonal cylinder structures, and annular clamping grooves (230) are arranged between the two embedded part end portions (25) and located on the annular side of the embedded part connecting portions (23).

14. A self-cleaning ventilation filter arrangement as claimed in claim 1, wherein: arrange wind wheel (6) including flabellum installation axle (19), flabellum (22) and pivot (20), two pivots (20) set up respectively at the both ends of flabellum installation axle (19), pivot (20) and flabellum installation axle (19) constitute the pivot of in bank wind wheel (6), and multi-disc flabellum (22) evenly distributed is in the circumference of flabellum installation axle (19).

15. A self-cleaning ventilation filter arrangement according to claim 14, wherein: the wind exhaust wheel (6) further comprises a round shaft (21), the round shaft (21) is arranged between the fan blade mounting shaft (19) and the pivot shaft (20), and the diameter of the pivot shaft (20) is smaller than that of the round shaft (21) is smaller than that of the fan blade mounting shaft (19).

16. A switchgear assembly of a pre-installed substation, characterized in that it comprises a self-cleaning ventilation filter device according to any of claims 1-15, the air outlet (12) of said self-cleaning ventilation filter device being in communication with the interior of the switchgear assembly, and the negative pressure being formed in the air outlet (12) when the exhaust fan of the switchgear assembly exhausts air.