Low-voltage draw-out type switch cabinet

Abstract

The utility model relates to a low-voltage draw-out type switch cabinet, which comprises a cabinet body connected with a single-open side door plate through a rotating shaft, the bottom of the cabinet body is provided with a dust removal diversion shell, a circulating filtering assembly is detachably installed in the dust removal diversion shell, the top of the dust removal diversion shell is communicated with the bottom of the cabinet body, and the top of the dust removal diversion shell is communicated with the bottom of the cabinet body. The heat dissipation airflow filtered by the circulating filtering assembly is input into the cabinet body from bottom to top; a cabinet cavity of the cabinet body is internally provided with a sliding installation assembly which can install electrical elements and can adjust the electrical elements to slide in or out of the cabinet body. An exhaust assembly is further inserted into one side of the cabinet body, and a drying air inlet assembly capable of communicating with the dust removal flow guide shell is further arranged on the side, away from the exhaust assembly, of the cabinet body. By means of external force cleaning and self-cleaning, impurities can be filtered in a circulating mode, continuous effective dehumidification is achieved, and the cleanliness and dryness of heat dissipation airflow are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of switch cabinets, in particular to a low-voltage draw-out switch cabinet. Background Art

[0002] A switch cabinet is an electrical device. The external line of the switch cabinet first enters the main control switch in the cabinet, and then enters the sub-control switch, and each branch is set according to its needs. The main function of the switch cabinet is to switch on, control and protect electrical equipment during the processes of power generation, power transmission, power distribution and power conversion in the power system. Its core part adopts a load switch and a fuse, and has the advantages of simple structure, small volume, low price, improving power supply parameters and performance, and power supply safety. The switch cabinet is mainly applicable to various different occasions such as power plants, substations, petrochemical industries, metallurgical rolling mills, light industries, textile industries, factories and mines, residential quarters, high-rise buildings, etc.

[0003] In order to reduce the erosion and damage of external dust and water vapor to the internal electrical components of the existing switch cabinet, the airtightness of its cabinet body is usually improved, and an exhaust fan is set to guide the heat dissipation to pass through the cabinet cavity directionally to transfer the heat generated during the operation of the electrical components. However, there are many electrical components in the existing switch cabinet, and the working heat is more, and a large heat dissipation air flow is required to flow through the cabinet cavity to achieve temperature reduction. The dust impurities and water vapor carried by the heat dissipation air flow are extremely easy to damage the electrical components. Therefore, a dehumidification and filtration structure needs to be set to remove water vapor and dust impurities. However, the existing dehumidification and filtration structure needs to be replaced regularly and cannot be reused, which greatly increases the working cost and also increases the labor cost due to regular disassembly and assembly. Finally, the installation positions of the existing electrical components are fixedly limited inside the cabinet cavity, and the operator needs to stretch part of the body into the cabinet cavity with small visibility and space for maintenance and disassembly. The operation is difficult and cumbersome, which affects the efficiency of disassembly, maintenance and assembly. Summary of the Utility Model

[0004] The purpose of the present utility model is to provide a low-voltage draw-out switchgear cabinet that can achieve cyclic filtration of impurities and continuous and effective dehumidification through external force cleaning and self-cleaning methods, thereby improving the cleanliness and dryness of the cooling air flow, effectively transferring the working heat of electrical components without damage to ensure their service life, and also being able to slidably insert and remove the installation structure into and out of the cabinet body in an adjustable manner to facilitate the disassembly, installation, and maintenance of electrical components by operators outside the cabinet body. This is to solve the problems that existing switchgear cabinets cannot effectively dehumidify and filter the cooling air flow, especially cannot continuously and efficiently dehumidify and filter the cooling air flow, and need to perform disassembly and installation operations regularly to replace the filter module and dehumidification module, which greatly increases the working cost and manual operation cost. In addition, the installation of the existing fixed installation cabinet body structure is difficult, and the installation structure cannot be transferred to the outside of the cabinet body for disassembly, installation, and maintenance of electrical components, which greatly increases the complexity of disassembly, installation, and maintenance and reduces the efficiency of disassembly, installation, and maintenance.

[0005] The technical solution adopted by the present utility model is as follows: A low-voltage draw-out switchgear cabinet includes a cabinet body connected with a single-opening side door panel through a rotating shaft. A dust removal and diversion shell is provided at the bottom of the cabinet body, and a cyclic filtration component is detachably installed in the dust removal and diversion shell. Among them, the top of the dust removal and diversion shell is communicated with the bottom of the cabinet body, so as to input the cooling air flow filtered by the cyclic filtration component into the cabinet body from bottom to top; A sliding installation component capable of installing electrical components and capable of moving the electrical components into or out of the cabinet body is installed in the cabinet cavity of the cabinet body; An exhaust component is also inserted on one side of the cabinet body, and a dry air intake component capable of communicating with the dust removal and diversion shell is also provided on the side of the cabinet body away from the exhaust component.

[0006] According to a preferred implementation manner, a baffle is detachably installed on the side surface of the shell of the dust removal and diversion shell, and limiting strips for defining the working position of the cyclic filtration component in the shell are provided on two opposite inner walls of the shell; A chute parallel to it is also provided below the limiting strip.

[0007] According to a preferred implementation manner, the cyclic filtration component includes a filter plate, a hole cleaning frame, a support spring, and a bottom surface scraper. Among them, the filter plate is horizontally inserted into the installation space defined by the limiting strips, and the upper surface of the filter plate supports the hole cleaning frame through the support spring; The bottom surface scraper is inserted into two chutes arranged in alignment at its two ends in such a way that it can abut against the bottom of the filter plate, and a linkage rod parallel to the filter plate and extending to the outside of the shell through the baffle is connected to the plate surface of the bottom surface scraper.

[0008] According to a preferred embodiment, the hole cleaning frame includes a positioning grid, hole cleaning columns, and adjusting screws. Among them, the positioning grid is suspended above the filter plate by a plurality of the support springs, and a plurality of the hole cleaning columns corresponding to the filter holes on the filter plate are arranged in an array on the lower surface of the positioning grid; the adjusting screw is rotatably inserted through the centroid of the positioning grid, and the lower end of the axial direction of the adjusting screw is threadedly inserted into the filter plate.

[0009] According to a preferred embodiment, the air inlet pipe of the drying air inlet assembly is installed on the side surface of the cabinet body, and the lower end of the axial direction of the air inlet pipe is inserted into the housing; an inverted U-shaped pipe head is arranged at the inlet of the air inlet pipe, and an air flow driving unit is further arranged in the pipe body of the air inlet pipe; a drying turntable capable of drying the heat dissipation air flow conveyed by it is further inserted on the air inlet pipe.

[0010] According to a preferred embodiment, the sliding installation assembly includes a positioning slide rail, a support strip, and an opening vertical plate. Among them, the positioning slide rail is installed on two opposite inner side walls of the cabinet body, and the sliding ends of the positioning slide rail are connected to both side edges of the support strip; the opening vertical plate is supported on the support strip.

[0011] According to a preferred embodiment, the exhaust pipe of the exhaust assembly penetrates through the side of the cabinet body away from the drying air inlet assembly, and an air flow check valve is arranged in the exhaust pipe.

[0012] According to a preferred embodiment, a through hole is formed on the side surface of the cabinet body, a stepped ring groove is formed on the opening edge of the through hole, and a sealing gasket is embedded on the stepped surface of the stepped ring groove.

[0013] According to a preferred embodiment, a convex plate that fits the inner wall contour of the through hole is arranged on the plate body of the single-opening side door panel.

[0014] According to a preferred embodiment, an insertion plate is supported on the side surface of the cabinet body where the through hole is formed; a sleeve ring is arranged on the side of the single-opening side door panel away from the rotating shaft.

[0015] The beneficial effects of the present utility model are:

[0016] The dust removal and diversion shell provided in this application cooperates with the circulating filtration component to guide the heat dissipation air flow to flow in a directional manner, so as to complete impurity removal and filtration while continuously inputting into the cabinet body. In particular, the circulating filtration component can ensure the smoothness of the filter screen structure it constructs through regular non-dismantling cleaning, so as to realize that the impurity filter screen within the structure of the circulating filtration component can continuously filter impurities in the heat dissipation air flow for a long time under periodic cleaning. The sliding installation component can move the mounting plate body of the electrical component into or out of the cabinet body according to requirements, which is convenient for the disassembly, installation and maintenance of the electrical component, avoiding the defects that the operator needs to stretch part of the body into the cabinet cavity with low visibility and small space for maintenance, disassembly and installation, which is difficult, cumbersome and has low disassembly and installation maintenance efficiency, and greatly improving the convenience and efficiency of disassembly and installation maintenance. The exhaust component provided in this application can unidirectionally discharge the heat dissipation air flow that has completed heat absorption according to requirements, so that the heat dissipation air flow can carry the heat in the cabinet cavity and be directed to the external environment, thereby effectively limiting the working temperature range of the inner cavity of the cabinet body. The exhaust component only allows the unidirectional discharge of the heat dissipation air flow, avoiding the backflow of external impurities or air into the cabinet body.

[0017] The dry air intake component provided in this application can continuously input the heat dissipation air flow and can continuously and effectively dry and dehumidify the heat dissipation air flow, so as to ensure the dryness of the heat dissipation air flow, avoid damage such as corrosion to the electrical components caused by the water vapor carried in the heat dissipation air flow, and greatly improve the effectiveness, safety and stability of heat dissipation. The dry air intake component continuously absorbs the water vapor in the heat dissipation air flow by constructing a rotating dehumidification structure, thus avoiding the problems of weak dehumidification effect due to absorption saturation and increased working cost and labor cost due to regular disassembly, installation and maintenance and replacement. The continuous dry dehumidification structure of the dry air intake component can replace different moisture absorption modules by rotating regularly and automatically, so as to realize continuous and efficient moisture absorption. At the same time, the moisture absorption module that has completed water vapor adsorption can be secondarily dried by hot air drying for repeated rotation and use.

[0018] The bottom surface scraper provided in this application can effectively scrape off the impurities that may adhere to the bottom surface of the filter plate when the hole cleaning frame pushes the impurities out of the filter plate, so as to ensure the effectiveness of filter plate cleaning. The circulating filtration component provided in this application can effectively clean the filter plate through regular position adjustment operation without disassembly, so that the filter plate can be conveniently cleaned, improving the cleaning efficiency and convenience while improving the efficiency of continuous filtration effect. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of a preferred low-voltage draw-out switch cabinet proposed by the present utility model;

[0020] Figure 2 is a side view of a sliding installation component of a preferred low-voltage draw-out switch cabinet proposed by the present utility model;

[0021] Figure 3 It is a partial structural schematic diagram of a drying turntable of a preferred low-voltage draw-out switch cabinet proposed by the present utility model.

[0022] List of reference numerals

[0023] 1: Cabinet body; 2: Single-opening side door panel; 3: Rotating shaft; 4: Dust removal and diversion shell; 5: Circulating filtration assembly; 6: Sliding installation assembly; 7: Exhaust assembly; 8: Dry air inlet assembly; 11: Through hole; 12: Plug board; 21: Convex plate; 22: Collar; 41: Shell; 42: Baffle; 43: Limit strip; 44: Chute; 51: Filter plate; 52: Hole cleaning frame; 53: Support spring; 54: Bottom scraping plate; 55: Linking rod; 61: Alignment slide rail; 62: Support strip; 63: Open-hole vertical plate; 71: Exhaust pipe; 72: Air flow check valve; 81: Air inlet pipe; 82: Inverted U-shaped pipe head; 83: Air flow driving unit; 84: Drying turntable; 111: Step ring groove; 112: Sealing gasket; 521: Positioning grid; 522: Hole cleaning column; 523: Adjusting screw; 621: Positioning rod; 622: Magnetic positioning block; 623: Pull ring; 841: Outer attached shell; 842: Turntable; 843: Stepping rotation motor; 844: Air inlet pipe; 845: Air outlet pipe; 846: Fan; 847: Heating unit; 848: Dehumidifying unit. Detailed implementation manners

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the present utility model in combination with the accompanying drawings and the description of the embodiments or the prior art. Obviously, the following description of the structures in the drawings is only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] The following will refer to the accompanying drawings and describe in detail the technical solutions provided by the present utility model through embodiment modes. It should be noted here that the description of these embodiment modes is used to help understand the present utility model, but does not constitute a limitation to the present utility model. In some examples, since some embodiment modes belong to the prior art or conventional technology, they are not described or not described in detail.

[0026] In addition, the technical features recorded herein, or the steps in all the methods or processes disclosed, except for mutually exclusive features and / or steps, can also be combined in any suitable manner in one or more embodiments. For those skilled in the art, it is easy to understand that the steps or operation sequences of the methods related to the embodiments provided herein can also be changed. Any sequence in the drawings and the embodiments is only for illustrative purposes and does not imply a requirement to follow a certain sequence, unless it is clearly stated that a certain sequence is required.

[0027] The serial numbers assigned to components in this text itself, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning. And the "connection" and "coupling" mentioned in this application, under reasonable circumstances (without self - contradiction), both include direct and indirect connection (coupling).

[0028] The following is a detailed description with reference to the accompanying drawings.

[0029] Embodiment 1

[0030] This application provides a low - voltage draw - out switchgear, which includes a cabinet body 1, a single - opening side door panel 2, a rotating shaft 3, a dust - removing and guiding shell 4, a circulating filtration assembly 5, a sliding installation assembly 6, an exhaust assembly 7, and a dry air intake assembly 8.

[0031] According to Figures 1-3A specific embodiment is shown. A single-opening side door panel 2 is connected to the side of the cabinet body 1 through a rotating shaft 3. A dust removal and diversion shell 4 is arranged at the bottom of the cabinet body 1. A circulating filtration component 5 is detachably installed in the dust removal and diversion shell 4. The top of the dust removal and diversion shell 4 is communicated with the bottom of the cabinet body 1, so as to input the heat dissipation air flow filtered by the circulating filtration component 5 into the cabinet body 1 from bottom to top. A sliding installation component 6 capable of installing electrical components and capable of moving the electrical components into or out of the cabinet body 1 is installed in the cabinet cavity of the cabinet body 1. An exhaust component 7 is also inserted on one side of the cabinet body 1. A drying air inlet component 8 capable of being communicated with the dust removal and diversion shell 4 is also arranged on one side of the cabinet body 1 away from the exhaust component 7. The dust removal and diversion shell 4 and the circulating filtration component 5 provided in the present application cooperate to guide the heat dissipation air flow to flow in a directional manner to complete impurity removal and filtration while continuously inputting into the cabinet body 1. In particular, the circulating filtration component 5 can be cleaned regularly without disassembly to ensure the smoothness of the filter screen structure it constructs, so as to realize that the impurity filter screen constructed by the circulating filtration component 5 can continuously filter impurities in the heat dissipation air flow for a long time under periodic cleaning. The sliding installation component 6 can move the mounting plate body of the electrical component into or out of the cabinet body 1 according to needs, thus facilitating the disassembly, installation and maintenance of the electrical component, avoiding the defects that the operator needs to stretch part of the body into the cabinet cavity with low visibility and small space for maintenance, disassembly and installation, which is difficult, cumbersome and has low disassembly, installation and maintenance efficiency, and greatly improving the convenience and efficiency of disassembly, installation and maintenance. The exhaust component 7 provided in the present application can unidirectionally discharge the heat dissipation air flow that has completed heat absorption according to needs, so that the heat dissipation air flow entrains the heat in the cabinet cavity and discharges it to the external environment directionally, thereby effectively limiting the internal cavity working temperature range of the cabinet body 1. The exhaust component 7 only allows the unidirectional discharge of the heat dissipation air flow, avoiding the backflow of external impurities or air flow into the cabinet body 1. The drying air inlet component 8 provided in the present application can continuously input the heat dissipation air flow and can continuously and effectively dry and dehumidify the heat dissipation air flow, thereby ensuring the dryness of the heat dissipation air flow to avoid damage such as corrosion to the electrical components caused by the water vapor carried in the heat dissipation air flow, and greatly improving the effectiveness and safety stability of heat dissipation. The drying air inlet component 8 continuously absorbs the water vapor in the heat dissipation air flow by constructing a rotating dehumidification structure, thus avoiding the problems of weak dehumidification effect due to absorption saturation and the increase of working cost and labor cost due to regular disassembly, installation and maintenance and replacement. The continuous drying and dehumidification structure of the drying air inlet component 8 can replace different moisture absorption modules by rotating regularly and automatically, so as to realize continuous and efficient moisture absorption. At the same time, the moisture absorption module that has completed water vapor adsorption can be secondarily dried by heat drying for repeated rotation and use.

[0032] Preferably, a through opening 11 is provided on the side surface of the cabinet body 1. Further preferably, a stepped ring groove 111 is provided at the opening edge of the through opening 11. Further preferably, a sealing gasket 112 is inlaid on the step surface of the stepped ring groove 111. Preferably, the side surface of the cabinet body 1 where the through opening 11 is provided supports a plug board 12. Preferably, a convex plate 21 that fits the inner wall contour of the through opening 11 is provided on the plate body of the single-opening side door panel 2. Preferably, a collar 22 is provided on the side of the single-opening side door panel 2 away from the rotating shaft 3. Specifically, when the collar 22 is sleeved on the plug board 12, the relative position between the cabinet body 1 and the single-opening side door panel 2 is defined by a lock body or a plug rod passing through the hole in the plate body of the plug board 12.

[0033] Preferably, the dust removal and diversion shell 4 includes a shell body 41, a baffle 42, a limiting strip 43 and a sliding groove 44. Preferably, the baffle 42 is detachably installed on the side surface of the shell body 41. Preferably, limiting strips 43 for positioning and limiting the working position of the circulating filter assembly 5 in the shell body 41 are provided on two opposite inner walls of the shell body 41. Preferably, a sliding groove 44 parallel to the limiting strip 43 is further provided below the limiting strip 43. The shell body 41 provided in this application can define a conduction chamber and a containing chamber, so that the circulating filter assembly 5 inside it can complete the filtration of air flow impurities during the process of causing the heat dissipation air flow to flow directionally. The setting of the baffle 42 can adjustably expose the installation opening, so as to facilitate the installation of the circulating filter assembly 5 to the working position defined by the limiting strip 43 and the sliding groove 44.

[0034] Preferably, the circulating filter assembly 5 includes a filter plate 51, a hole cleaning frame 52, a support spring 53 and a bottom scraping plate 54. Preferably, the filter plate 51 is horizontally inserted into the installation space defined by the limiting strip 43. Further preferably, a hole cleaning frame 52 is supported on the upper surface of the filter plate 51 by a support spring 53. Preferably, the bottom scraping plate 54 is inserted into two oppositely arranged sliding grooves 44 at both ends in such a way that it can abut against the bottom of the filter plate 51. Further preferably, a linkage rod 55 parallel to the filter plate 51 and extending to the outside of the shell body 41 through the baffle 42 is connected to the plate surface of the bottom scraping plate 54. The filter plate 51 provided in this application intercepts impurities in the heat dissipation air flow by arranging a number of small holes in the plate body, and the hole cleaning frame 52 provided above it clears the holes blocked by impurities by adjustably inserting into the pores of the filter plate 51, so as to improve the smoothness of the filter plate 51 during long-term operation. The bottom scraping plate 54 provided in this application can effectively scrape off the impurities that may adhere to the bottom surface of the filter plate 51 when the hole cleaning frame 52 pushes the impurities out of the filter plate 51, so as to ensure the effectiveness of the cleaning of the filter plate 51. The circulating filter assembly 5 provided in this application can effectively clean the filter plate 51 through regular position adjustment operations without disassembly, so that the filter plate 51 can be conveniently cleaned, improving the cleaning efficiency and convenience while improving the efficiency of continuous filtration.

[0035] Preferably, the hole cleaning frame 52 includes a positioning grid 521, hole cleaning columns 522, and adjusting screws 523. Preferably, the positioning grid 521 is suspended above the filter plate 51 by a plurality of support springs 53. Further preferably, a plurality of hole cleaning columns 522 corresponding to the filter hole positions on the filter plate 51 are arranged in an array on the lower surface of the positioning grid 521. Preferably, the hole cleaning columns can be needle bodies of a specific length, so as to be adapted to the filter small holes with a small diameter size, so that while the filter small holes can effectively intercept impurities in the heat dissipation air flow, the needle-shaped hole cleaning columns 522 can be used for effective cleaning and maintenance. Preferably, an adjusting screw 523 is rotatably inserted through the center of the surface of the positioning grid 521 through a rotating bearing. Further preferably, the lower end of the axial direction of the adjusting screw 523 is threadedly inserted into the filter plate 51, so that by rotating the adjusting screw 523, the length of its insertion into the filter plate 51 is changed, and further the distance between the positioning grid 521 and the filter plate 51 is changed, and the hole cleaning columns 522 can be adjustably inserted into the filter holes of the filter plate 51 to realize the dredging of the filter holes. Preferably, when the hole cleaning columns 522 are inserted into the filter holes of the filter plate 51, the linkage rod 55 pulls the bottom scraping plate 54 to move horizontally under the action of an external force, so as to scrape off the filter impurities on the bottom surface of the filter plate 51. Preferably, a receiving trough for receiving the impurities removed from the filter plate 51 is placed on the inner bottom surface of the housing cavity of the housing 41. During cleaning, first, open the through hole 11 of the cabinet body 1, and manually rotate and screw the adjusting screw 523 to increase the length of its spiral insertion into the filter plate 51, so as to reduce the distance between the positioning grid 521 and the filter plate 51, so that the hole cleaning columns 522 are inserted into the filter holes of the filter plate 51 until the impurities in the filter plate 51 are completely pushed out from the lower bottom surface of the filter plate 51, realizing the dredging of the filter holes of the filter plate 51. Then, pull the linkage rod 55 with an external force to drive the bottom scraping plate 54 to translate against the bottom surface of the filter plate 51, so as to realize the cleaning of its bottom surface, and thus collect the impurities in the receiving trough for later transfer. Preferably, the insertion height of the air inlet pipe 81 is higher than that of the receiving trough to prevent the heat dissipation air flow from raising the impurities in the receiving trough.

[0036] Preferably, the sliding mounting assembly 6 includes a positioning slide rail 61, a support bar 62, and an opening vertical plate 63. Preferably, the positioning slide rail 61 is mounted on two opposite inner sidewalls of the cabinet body 1. Further preferably, the sliding ends of the positioning slide rail 61 are connected to both side edges of the support bar 62 to drive the support bar 62 to slide horizontally and adjustably slide into or out of the cabinet body 1 through the through opening 11. Preferably, an opening vertical plate 63 for facilitating the installation of electrical components is supported on the support bar 62. Preferably, a positioning rod 621 is connected to the surface of the support bar 62 away from the through opening 11. Further preferably, a magnetic positioning block 622 that can adjustably magnetically connect to the metal cabinet wall is further connected to one end of the positioning rod 621 away from the support bar 62. Further preferably, a pull ring 623 for facilitating the pulling and moving of the support bar 62 is further provided on the surface of the support bar 62 facing the single-opening side door panel 2. The positioning slide rail 61 provided in this application can guide the support bar 62 and the opening vertical plate 63 to move into or out of the cabinet body 1 according to requirements, so as to facilitate the disassembly and assembly of electrical components on the opening vertical plate 63. And through the setting of the positioning rod 621 and the magnetic positioning block 622 in this application, the positions of the support bar 62 and the opening vertical plate 63 in the cabinet body 1 can be limited, avoiding damage caused by excessive sliding of electrical components following the support bar 62 and the opening vertical plate 63. The pull ring 623 can facilitate pulling the support bar 62 and at the same time facilitate manually positioning the support bar 62 at the through opening 11 of the cabinet body 1 by manpower.

[0037] Preferably, the exhaust pipe 71 of the exhaust assembly 7 is penetrated through one side of the cabinet body 1 away from the drying air intake assembly 8, and an air flow check valve 72 is provided in the exhaust pipe 71.

[0038] Preferably, the intake pipe 81 of the drying air intake assembly 8 is mounted on the side surface of the cabinet body 1. Specifically, the axial lower end of the intake pipe 81 is inserted into the housing 41. Preferably, an inverted U-shaped pipe head 82 is provided at the inlet of the intake pipe 81. Further preferably, an air flow driving unit 83 is further provided in the pipe body of the intake pipe 81. Preferably, a drying turntable 84 capable of drying the heat dissipation air flow conveyed by it is further inserted on the intake pipe 81. The inverted U-shaped pipe head 82 provided in this application can prevent impurities from falling into the pipe cavity and causing excessive introduction of impurities, greatly reducing the impurity content of the heat dissipation air flow. The drying turntable 84 provided in this application can continuously and effectively dehumidify and dry the heat dissipation air flow to prevent the heat dissipation air flow from corroding electrical components.

[0039] Preferably, the drying turntable 84 includes an outer attached housing 841, a turntable 842, a stepping rotation motor 843, an air inlet pipe 844, an air outlet pipe 845, a fan 846, a heating unit 847, and a dehumidification unit 878. Preferably, the outer attached housing 841 is connected to the side wall of the air inlet pipe 81. Preferably, the stepping rotation motor 843 is installed inside the outer attached housing 841. Preferably, the transmission end of the stepping rotation motor 843 is provided with a turntable 842 at least partially embedded in the air inlet pipe 81. Further preferably, the turntable 842 is circumferentially and spacedly inlaid with a honeycomb disk dehumidification member of a dehumidification unit 878 that matches the cross-section of the lumen of the air inlet pipe 81. Preferably, the dehumidification unit 878 is a conventional circular plate-shaped frame filled with dehumidifying silica gel. Preferably, the coaxial air inlet pipe 844 and air outlet pipe 845 are inserted into the outer attached housing 841. Specifically, the air outlet pipe 845 is above the turntable 842, the air inlet pipe 844 is below the turntable 842, and a fan 846 and a heating unit 847 are arranged inside the air inlet pipe 844. Preferably, the heating unit 847 is a heating resistance wire arranged in a spatial array, which can heat the air flow drawn by the fan 846, so that when the hot air flow passes through the dehumidification unit 878 on the turntable 842, it takes away the water vapor intercepted by the dehumidification unit 878. Preferably, sealing rubber rings are arranged at the pipe orifices of the air inlet pipe 844 and air outlet pipe 845 close to the turntable 842 to effectively and elastically fill the gap between the pipe orifices and the turntable 842.

[0040] The present utility model is not limited to the above optional embodiments. Any person can obtain other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in its shape or structure, as long as the technical solutions fall within the scope defined by the claims of the present utility model, they all fall within the protection scope of the present utility model. Those skilled in the art should understand that the specification and drawings of the present utility model are illustrative and do not constitute a limitation on the claims. The protection scope of the present utility model is defined by the claims and their equivalents. Throughout the text, the features guided by "preferably" are only an optional manner and should not be understood as must be provided. Therefore, the applicant reserves the right to abandon or delete the relevant preferred features at any time.

Claims

1. A low-voltage withdrawable switch cabinet, comprising a cabinet body (1) connected to a single-opening side door panel (2) via a rotating shaft (3), characterized in that: A dust removal guide shell (4) is provided at the bottom of the cabinet (1), and a circulation filter assembly (5) is detachably installed in the dust removal guide shell (4), wherein the top of the dust removal guide shell (4) is connected to the bottom of the cabinet (1), so that the heat dissipation airflow filtered by the circulation filter assembly (5) is input into the cabinet (1) from bottom to top; A sliding installation assembly (6) capable of installing electrical components and moving the electrical components to slide into or out of the cabinet (1) is installed in the cabinet cavity of the cabinet (1); An exhaust assembly (7) is also inserted on one side of the cabinet (1), and a dry air intake assembly (8) capable of communicating with the dust removal guide shell (4) is also provided on a side of the cabinet (1) away from the exhaust assembly (7), wherein: The air inlet pipe (81) of the drying air inlet assembly (8) is installed on the side of the cabinet (1), and the axial lower end of the air inlet pipe (81) is inserted into the shell (41); The inlet of the air intake pipe (81) is provided with an inverted U-shaped pipe head (82), and the pipe body of the air intake pipe (81) is also provided with an air flow driving unit (83); A drying rotary disk (84) capable of drying the heat dissipation airflow transported by the air inlet pipe (81) is also inserted into the air inlet pipe (81).

2. The low-voltage withdrawable switch cabinet according to claim 1, characterized in that: A baffle (42) is detachably mounted on the side of the shell (41) of the dust removal guide shell (4), and limiting strips (43) for locking and limiting the working position of the circulation filter assembly (5) in the shell (41) are arranged on two opposite inner walls of the shell (41); A sliding groove (44) parallel to the limiting strip (43) is also provided below the limiting strip (43).

3. The low-voltage withdrawable switch cabinet according to claim 2, characterized in that: The circulating filter assembly (5) comprises a filter plate (51), a hole cleaning frame (52), a support spring (53) and a bottom scraper (54), wherein: The filter plate (51) is horizontally inserted into the installation space defined by the limiting strip (43), and the upper surface of the filter plate (51) is supported by the hole cleaning frame (52) via the supporting spring (53); The bottom scraper (54) has its two ends inserted into the two aligning slide grooves (44) in such a way that it can abut against the bottom of the filter plate (51), and the plate surface of the bottom scraper (54) is connected to a linkage rod (55) which is parallel to the filter plate (51) and extends to the outside of the shell (41) in such a way as to penetrate the baffle plate (42).

4. The low-voltage withdrawable switch cabinet according to claim 3, characterized in that: The hole cleaning frame (52) comprises a positioning grid (521), a hole cleaning column (522) and an adjusting screw (523), wherein: The positioning grid (521) is suspended above the filter plate (51) by means of a plurality of support springs (53), and a plurality of hole-cleaning columns (522) corresponding to the filter holes on the filter plate (51) are arranged in an array on the lower surface of the positioning grid (521); The adjusting screw (523) is rotatably inserted through the center of the surface of the positioning grid (521), and the axial lower end of the adjusting screw (523) is threadedly inserted into the filter plate (51).

5. The low-voltage withdrawable switch cabinet according to claim 4, characterized in that: The sliding installation assembly (6) comprises an alignment slide rail (61), a support bar (62) and a perforated vertical plate (63), wherein: The alignment slide rail (61) is installed on two opposite inner side walls of the cabinet (1), and the sliding end of the alignment slide rail (61) is connected to two side edges of the support bar (62); A perforated vertical plate (63) is supported on the support bar (62).

6. The low-voltage withdrawable switch cabinet according to claim 5, characterized in that: The exhaust pipe (71) of the exhaust assembly (7) is arranged on a side of the cabinet (1) away from the dry air intake assembly (8), and an airflow check valve (72) is arranged in the exhaust pipe (71).

7. The low-voltage withdrawable switch cabinet according to claim 6, characterized in that: A through opening (11) is provided on the side of the cabinet (1), a stepped annular groove (111) is provided on the opening edge of the through opening (11), and a sealing gasket (112) is embedded on the step surface of the stepped annular groove (111).

8. The low-voltage withdrawable switch cabinet according to claim 7, characterized in that: The plate body of the single-opening side door plate (2) is provided with a convex plate (21) that matches the inner wall contour of the through opening (11).

9. The low-voltage withdrawable switch cabinet according to claim 8, characterized in that: The side of the cabinet (1) on which the through opening (11) is provided is supported by an inserting plate (12); A collar (22) is provided on the side of the single-opening door panel (2) away from the rotating shaft (3).

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