A PLC control cabinet

Abstract

The present invention relates to the technical field of PLC control cabinets, and discloses a PLC control cabinet, including a cabinet body, a cabinet door movably connected to the front side of the cabinet body, a heat dissipation groove inclined downward on the left wall of the cabinet body, a humidity sensor fixedly installed on the left wall of the inner cavity of the cabinet body, a desiccant cylinder fixedly connected to the left wall of the inner cavity of the cabinet body, a sealing cover threadedly connected to the top of the desiccant cylinder, a material guide assembly is arranged in the desiccant cylinder, and a sealing cover is fixedly connected to the bottom of the desiccant cylinder. When the present invention uses a valve disc to intermittently access the desiccant and release it, the desiccant cylinder is always relatively sealed, thereby avoiding the desiccant in the desiccant cylinder from becoming ineffective due to moisture. In conjunction with the use of a humidity sensor to control the valve plate to adjust the silo space in the valve disc, the amount of desiccant can be adjusted at different stages of dehumidification to ensure the reasonable amount of desiccant and avoid waste. In addition, the air circulation and drying effect are good, and at the end of drying, the ineffective desiccant automatically falls into the collection cylinder for recovery, which is convenient for processing.

Description

Technical Field

[0001] The present invention relates to the technical field of PLC control cabinets, and in particular to a PLC control cabinet. Background Art

[0002] PLC control cabinet has protection functions such as overload, short circuit, and phase loss protection. It can be combined according to the actual control scale. It can not only realize single-cabinet automatic control, but also realize multiple cabinets through industrial Ethernet or industrial field bus network to form a distributed control system (DCS). PLC control cabinet can adapt to various industrial automation control occasions of various sizes and is widely used in electric power, metallurgy, chemical industry, papermaking, environmental protection and sewage treatment and other industries.

[0003] The authorized patent with publication number CN114698307B discloses an efficient and energy-saving PLC electrical control cabinet, which relates to the technical field of PLC control cabinets. The invention comprises: a cabinet body, a collecting device is installed on the top of the cabinet body; a filtering component; a driving mechanism; a drying mechanism; and a grinding component. When the invention is used on rainy days, the grinding component is driven to grind the desiccant, so that the desiccant can effectively dry the air in the cabinet body, and prevent water droplets from appearing inside the cabinet body due to the temperature difference between the inside and outside of the cabinet body, and dripping on the components installed inside the cabinet body, causing the components to be damaged due to circuit failures. The components inside the control cabinet are well protected, and the service life of the components is extended.

[0004] When the PLC electrical control cabinet in the above patent is drying the inside of the cabinet, the desiccant is in the drying box, and the drying box has a through hole for air circulation, which is always open, resulting in the relative exposure of the desiccant. The desiccant is prone to become ineffective when used, and all the desiccant is used during drying. The quality of the desiccant used for subsequent drying is prone to decrease, resulting in poor drying effect. During the drying process, the desiccant is sprayed onto the dustproof net with the air flow and adheres to the dustproof net after absorbing water. Due to the lack of cleaning of this part of the desiccant, the dustproof net is easily blocked, affecting the air flow efficiency, thereby reducing the drying efficiency. Desiccant with different usage levels is mixed together, affecting the drying effect of the air, and it is not convenient to clean the invalid desiccant. Summary of the invention

[0005] The purpose of the present invention is to solve the problems of poor control over the use of desiccant, inconvenient desiccant cleaning and poor dehumidification and drying effect when a general PLC electrical control cabinet is used. The present invention provides a PLC control cabinet.

[0006] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0007] A PLC control cabinet, comprising a cabinet body, a cabinet door movably connected to the front side of the cabinet body, a heat dissipation groove inclined downward on the left wall of the cabinet body, a humidity sensor fixedly installed on the left wall of the cabinet body cavity, a desiccant cylinder fixedly connected to the left wall of the cabinet body cavity, a sealing cover threadedly connected to the top of the desiccant cylinder, a material guide assembly provided in the desiccant cylinder, a sealing cover fixedly connected to the bottom of the desiccant cylinder, material holes are provided on the upper and lower sides of the sealing cover, the bottom of the inner cavity of the desiccant cylinder is contracted to form a cone, the cone is butted with the material hole on the upper side, a valve disc is rotatably connected to the sealing cover, a material bin is provided inside the valve disc, a material port is provided on the rear side of the material bin, a valve plate is rotatably connected to the material bin, and a grid plate is slidably clamped on the left wall of the cabinet body cavity;

[0008] A flow guide pipe is fixedly installed at the bottom of the cabinet inner cavity, and hollow rectifying strips are fixedly connected to the upper and lower ends of the flow guide pipe. A plurality of flow guide holes are equidistantly opened on the opposite sides of the two rectifying strips. The flow guide pipe has a contraction section at the bottom, and a funnel pipe is fixedly connected to the bottom of the contraction section. A collecting cylinder is threadedly connected to the bottom of the funnel pipe. A recovery pipe is fixedly connected between the funnel pipe and the flow guide pipe, and an output pipe is fixedly connected between the funnel pipe and the material hole at the lower side. An inclined filter plate is fixedly connected to the bottom of the inner cavity of the funnel pipe, and the inclined filter plate separates the funnel pipe from top to bottom. The recovery pipe is connected to the lower side of the funnel pipe, and the output pipe is connected to the upper side of the funnel pipe.

[0009] A fan is provided in the inner cavity at the bottom of the guide tube, and two filter toothed discs are rotatably connected to the inner cavity at the bottom of the guide tube. The two filter toothed discs are respectively located on the left and right sides of the contraction section, and scrapers are provided on the opposite sides of the two filter toothed discs. The scrapers are fixedly connected to the upper wall of the inner cavity of the guide tube, and the scrapers are movably abutted against the surfaces of the filter toothed discs. The fan is located on the left side of the two filter toothed discs.

[0010] Furthermore, the material guiding assembly includes brackets fixedly connected to the upper and lower sides of the inner cavity of the desiccant cylinder, a connecting sleeve is fixedly connected to the upper bracket, an elastic material discharging rod is slidably connected to the middle part of the two brackets, the elastic material discharging rod is elastically connected to the top of the inner cavity of the connecting sleeve, the elastic material discharging rod is movably abutted against the periphery of the valve disc and is in a compressed state, and a wavy strip is fixedly connected in the material port.

[0011] Furthermore, a guide groove is provided on the inner wall of the valve plate shaft, and an elastic column is slidably engaged with the middle part of the valve disc, and a protrusion is provided on the upper surface of the elastic column, and the protrusion is movably engaged with the guide groove, and the guide groove is composed of a combination of a straight groove on the left and an arc groove on the right, and the left starting end of the arc groove coincides with the right end of the straight groove, and the arc groove extends backward and to the right from the left starting end in a spiral shape, and the guide groove is composed of a combination of a straight groove on the left and an arc groove on the right, and a clamping block is rotatably connected to the left end of the elastic column, and the clamping block is slidably engaged with the left side of the sealing cover, and a wedge groove is provided on the left side of the clamping block, and a wedge block is movably connected to the wedge groove, and the wedge block and the wedge groove both have inclined surfaces and are movably abutted by the inclined surfaces, and a telescopic cylinder is fixedly installed on the left wall of the cabinet body cavity, and the telescopic end at the top of the telescopic cylinder is fixedly connected to the wedge block, and the humidity sensor negatively feedback controls the telescopic cylinder.

[0012] Furthermore, an elastic rod is slidably inserted at the top of the wedge block, the elastic rod is fixedly connected to the grid plate, and the elastic rod is slidably inserted on the desiccant cylinder.

[0013] Furthermore, the grid plate is provided with a plurality of through grooves connected with the heat dissipation grooves, and the left wall of the cabinet inner cavity is provided with a sliding groove corresponding to the grid plate.

[0014] Furthermore, a touch switch is fixedly mounted on the right rear wall of the sealing cover, and a pin is fixedly connected to the rear side of the right wall of the valve disc. The pin can squeeze the touch switch, and the touch switch electrically controls the telescopic cylinder.

[0015] Furthermore, a conical worm gear is rotatably connected to the bottom of the cabinet inner cavity, a driving motor is fixedly installed on the front wall of the cabinet inner cavity, an output end of the driving motor is fixedly connected to the conical worm gear, the driving motor is electrically connected to the humidity sensor, a worm gear is fixedly sleeved on the right end of the valve disc, and the worm gear is meshingly connected to the conical worm gear.

[0016] Furthermore, a bevel gear rod is rotatably plugged into the bottom of the guide pipe, the bevel gear rod is rotatably connected to the left wall of the cabinet inner cavity, the bevel gear rod is meshingly connected to the cone-head worm gear, and the fan is fixedly connected to the right end of the bevel gear rod.

[0017] Furthermore, a gear rod is rotatably installed on the upper side of the bottom of the guide tube, and the gear rod is meshingly connected with the two filter toothed discs. Corresponding tooth grooves are provided on the periphery of the filter toothed discs. A notch adapted to the gear rod and the filter toothed disc is provided on the upper side of the bottom of the guide tube, and a transmission belt is movably connected between the gear rod and the valve disc.

[0018] Furthermore, a protective cover is fixedly connected to the bottom of the inner cavity of the cabinet, the protective cover is located above the sealing cover, supporting feet are fixedly connected around the bottom of the cabinet, and the collecting tube is movably plugged into the lower wall of the cabinet.

[0019] The beneficial effects of the present invention are as follows:

[0020] In the present invention, when the valve disc is used to intermittently take the desiccant in the desiccant cylinder for release, since the material port on the valve disc can only be connected with the desiccant cylinder or the output pipe at the same time, the desiccant cylinder is always relatively sealed, thereby preventing the desiccant in the desiccant cylinder from becoming ineffective due to moisture. In combination with the use of a humidity sensor to control the valve plate to adjust the material bin space in the valve disc, the amount of desiccant can be adjusted at different stages of dehumidification, thereby ensuring a reasonable amount of desiccant and avoiding waste.

[0021] In the present invention, when drying, the fan is running to close and circulate the cabinet by means of upper and lower rectifying strips. When the valve disc intermittently releases the desiccant to the output pipe for output, the contraction section automatically absorbs the output desiccant by means of negative pressure and sprays it to the surface of the filter tooth disc. The filter tooth disc continuously rotates when intercepting the desiccant, and the scraper strip is used to passively clean the adhered desiccant, thereby facilitating air circulation and improving the drying effect. When subsequent drying is finished, the invalid desiccant automatically falls into the collection barrel for recovery, which is convenient for disposal. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural diagram of the PLC control cabinet of the present invention;

[0023] Figure 2 The present invention is a three-dimensional section of the PLC control cabinet body Figure 1 ;

[0024] Figure 3 The present invention is a three-dimensional section of the PLC control cabinet body Figure 2 ;

[0025] Figure 4 It is a three-dimensional cutaway view of the guide pipe part of the PLC control cabinet of the present invention;

[0026] Figure 5 The valve disc of the PLC control cabinet of the present invention is cut into three dimensions Figure 1 ;

[0027] Figure 6 It is a three-dimensional cutaway view of the sealing cover of the PLC control cabinet of the present invention;

[0028] Figure 7 It is an exploded schematic diagram of the elastic column and valve plate of the PLC control cabinet of the present invention;

[0029] Figure 8 The valve disc of the PLC control cabinet of the present invention is cut into three dimensions Figure 2 ;

[0030] Fig. 9 It is a partial three-dimensional cutaway view of the desiccant cylinder of the PLC control cabinet of the present invention.

[0031] Figure numerals: 1, cabinet; 11, cabinet door; 12, heat sink; 13, support foot; 14, humidity sensor; 2, desiccant cylinder; 21, sealing cover; 22, bracket; 23, connecting sleeve; 24, elastic material-dispersing rod; 3, sealing cover; 31, material hole; 32, touch switch; 33, valve disc; 34, worm gear; 35, pin; 36, material port; 37, wave strip; 38, valve plate; 39, guide groove; 4, elastic column; 41, bump; 4 2. Block; 43. Wedge groove; 44. Wedge block; 45. Telescopic cylinder; 46. Elastic rod; 47. Grid plate; 5. Guide pipe; 51. Straightening strip; 52. Guide hole; 53. Contraction section; 54. Funnel tube; 55. Collecting tube; 56. Recovery tube; 57. Output tube; 58. Inclined filter plate; 6. Conical worm; 61. Conical gear rod; 62. Fan; 7. Filter toothed disc; 71. Scraper strip; 72. Gear rod; 73. Transmission belt; 8. Protective cover. DETAILED DESCRIPTION

[0032] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0033] Embodiment 1, as Figure 1-Figure 9 As shown, a PLC control cabinet comprises a cabinet body 1, a cabinet door 11 is movably connected to the front side of the cabinet body 1, a heat dissipation slot 12 with an outer side tilted downward is provided on the left wall of the cabinet body 1, a humidity sensor 14 is fixedly installed on the left wall of the inner cavity of the cabinet body 1, a desiccant cylinder 2 is fixedly connected to the left wall of the inner cavity of the cabinet body 1, a sealing cover 21 is threadedly connected to the top of the desiccant cylinder 2, a material guide assembly is arranged in the desiccant cylinder 2, a sealing cover 3 is fixedly connected to the bottom of the desiccant cylinder 2, material holes 31 are provided on the upper and lower sides of the sealing cover 3, the bottom of the inner cavity of the desiccant cylinder 2 is contracted to form a cone, the cone is connected to the upper side of the material hole 31, a valve disc 33 is rotatably connected to the sealing cover 3, a material bin is provided inside the valve disc 33, a material bin has a material port 36 at the rear side, a valve plate 38 is rotatably connected to the material bin, and a grid plate 47 is slidably clamped to the left wall of the inner cavity of the cabinet body 1;

[0034] A flow guide pipe 5 is fixedly installed at the bottom of the inner cavity of the cabinet 1. Hollow rectifying strips 51 are fixedly connected at both ends of the flow guide pipe 5. A plurality of flow guide holes 52 are evenly spaced on the opposite sides of the two rectifying strips 51. The flow guide pipe 5 has a contraction section 53 at the bottom. A funnel pipe 54 is fixedly connected to the bottom of the contraction section 53. A collecting cylinder 55 is threadedly connected to the bottom of the funnel pipe 54. A recovery pipe 56 is fixedly connected between the funnel pipe 54 and the flow guide pipe 5. An output pipe 57 is fixedly connected between the funnel pipe 54 and the lower material hole 31. An inclined filter plate 58 is fixedly connected to the bottom of the inner cavity of the funnel pipe 54. The inclined filter plate 58 separates the funnel pipe 54 from top to bottom. The recovery pipe 56 is connected to the lower side of the funnel pipe 54, and the output pipe 57 is connected to the upper side of the funnel pipe 54.

[0035] A fan 62 is provided in the inner cavity at the bottom of the guide tube 5. Two filter toothed discs 7 are rotatably connected to the inner cavity at the bottom of the guide tube 5. The two filter toothed discs 7 are respectively located on the left and right sides of the contraction section 53. Scraping strips 71 are provided on the opposite sides of the two filter toothed discs 7. The scraping strips 71 are fixedly connected to the upper wall of the inner cavity of the guide tube 5. The scraping strips 71 are movably abutted against the surface of the filter toothed discs 7. The fan 62 is located on the left side of the two filter toothed discs 7.

[0036] When the humidity sensor 14 detects that the humidity inside the cabinet 1 exceeds the standard humidity, the grid plate 47 automatically seals the heat sink 12, and the fan 62 automatically runs to drive the lower rectifier strip 51 to draw air through the guide hole 52. The drawn air is discharged from the upper rectifier strip 51 through the guide hole 52 through the guide pipe 5. The air in the cabinet 1 automatically circulates up and down, and the synchronous valve disc 33 automatically rotates counterclockwise ( Figure 5 and Figure 8 The arrow directions in the figure are all counterclockwise), the valve plate 38 deflects counterclockwise so that the material bin in the valve disc 33 provides an effective material storage space. When the valve disc 33 drives the material port 36 to rotate and dock with the material hole 31 on the upper side, the desiccant in the desiccant cylinder 2 automatically slides down to fill the material bin. Later, when the valve disc 33 drives the material port 36 to rotate and dock with the material hole 31 on the lower side, the desiccant in the material bin automatically slides down to the output pipe 57 for output. Since the desiccant is intermittently collected and released when the valve disc 33 rotates, the material port 36 on the valve disc 33 can only be connected to the desiccant cylinder 2 or the output pipe 57 at the same time. The desiccant cylinder 2 is always relatively sealed, thereby preventing the desiccant in the desiccant cylinder 2 from becoming ineffective due to moisture, and at the same time controlling the amount of desiccant used;

[0037] According to the Venturi effect, since the air velocity entering the contraction section 53 is accelerated to form a negative pressure, the desiccant output by the output pipe 57 is automatically extracted through the funnel pipe 54 under the action of the negative pressure, and is sprayed to the surface of the right filter toothed disc 7 with the air flow. The filter toothed disc 7 on the right can intercept the desiccant, and the filter toothed disc 7 on the left can cooperate to prevent the desiccant from leaking into the cabinet 1. Since the cabinet 1 is relatively sealed as a whole, the humid air inside the cabinet 1 can be effectively controlled to circulate, and the desiccant on the surface of the filter toothed disc 7 is fully dried. During this period, the humidity sensor 14 monitors the humidity in the cabinet 1 in real time. In different dehumidification stages, the valve plate 38 automatically deflects in a positive proportion to the reset direction to reduce the effective storage space of the material bin in the valve disc 33, which can reduce the amount of desiccant used, avoid waste, and extend the use time of the desiccant in the subsequent desiccant cylinder 2.

[0038] During the dehumidification and drying period, the filter toothed disc 7 can automatically rotate, and the scraper bar 71 is used to passively scrape off the desiccant that has absorbed water and adhered to the surface, so as to avoid the desiccant from adhering and clogging on the filter toothed disc 7, thereby enhancing the air passing efficiency. At the end of subsequent drying, the desiccant that has failed to absorb water automatically slides from the recovery pipe 56 to the collection tube 55, which is convenient for recycling and processing. After the desiccant that has absorbed water falls into the collection tube 55, it adheres to each other. The partition of the inclined filter plate 58 can prevent the desiccant from being sucked into the guide tube 5 again by the negative pressure during subsequent drying, thereby interfering with the dehumidification and drying rate of the cabinet 1.

[0039] Embodiment 2, as Figure 8-Figure 9 As shown, the material guiding assembly includes brackets 22 fixedly connected to the upper and lower sides of the inner cavity of the desiccant cylinder 2, a connecting sleeve 23 is fixedly connected to the upper bracket 22, an elastic material discharging rod 24 is slidably connected to the middle of the two brackets 22, the elastic material discharging rod 24 is elastically connected to the top of the inner cavity of the connecting sleeve 23, the elastic material discharging rod 24 is movably abutted against the periphery of the valve disc 33 and is in a compressed state, and a corrugated strip 37 is fixedly connected in the material port 36.

[0040] Initially, the elastic material-discharging rod 24 is in a compressed state. When the valve disc 33 drives the material port 36 to connect with the material hole 31 on the upper side, the elastic material-discharging rod 24 releases its elastic force and moves downward to abut against the wave bar 37. During the continuous rotation of the valve disc 33, the elastic material-discharging rod 24 is restricted by the wave bar 37 to continuously move up and down, thereby loosening the desiccant stored in the desiccant cylinder 2 to ensure smooth output of the desiccant.

[0041] Embodiment three, as Figure 5-Figure 7As shown, a guide groove 39 is provided on the inner wall of the shaft of the valve plate 38, and an elastic column 4 is slidably engaged with the middle part of the valve disc 33. A convex block 41 is provided on the upper surface of the elastic column 4, and the convex block 41 is movably engaged with the guide groove 39. The guide groove 39 is composed of a straight groove on the left and an arc groove on the right. The left end of the arc groove coincides with the right end of the straight groove, and the arc groove extends from the left end backward and to the right in a spiral shape. A clamping block 42 is rotatably connected to the left end of the elastic column 4, and the clamping block 42 is slidably engaged with the left side of the sealing cover 3. A wedge groove 43 is provided on the left side of the clamping block 42, and a wedge block 44 is movably connected in the wedge groove 43. The wedge block 44 and the wedge groove 43 both have inclined surfaces and are movably abutted by the inclined surfaces. A telescopic cylinder 45 is fixedly installed on the left wall of the inner cavity of the cabinet 1, and the top telescopic end of the telescopic cylinder 45 is fixedly connected to the wedge block 44, and the humidity sensor 14 negatively feedback controls the telescopic cylinder 45.

[0042] When the humidity sensor 14 detects that the humidity inside the cabinet 1 exceeds the standard humidity, the humidity sensor 14 negatively feedback controls the extension of the telescopic cylinder 45, and the telescopic cylinder 45 drives the wedge block 44 to squeeze the wedge groove 43, and the clamping block 42 drives the elastic column 4 to move to the right. The initial protrusion 41 is movably engaged with the left end of the straight groove in the guide groove 39. When the elastic column 4 drives the protrusion 41 to move along the guide groove 39 from the straight groove to the arc groove, the valve plate 38 is immediately driven to deflect counterclockwise so that the material bin in the valve disc 33 provides an effective storage space.

[0043] An elastic rod 46 is slidably inserted on the top of the wedge block 44 . The elastic rod 46 is fixedly connected to the grid plate 47 . The elastic rod 46 is slidably inserted on the desiccant cylinder 2 .

[0044] Furthermore, the grid plate 47 has a plurality of through grooves that are connected to the heat dissipation grooves 12 , and the left wall of the inner cavity of the cabinet 1 is provided with a sliding groove corresponding to the grid plate 47 .

[0045] When the telescopic cylinder 45 is extended, the wedge block 44 synchronously drives the elastic rod 46 to move the grid plate 47 upward. When the grid plate 47 moves up the maximum distance along the slide groove, the grid plate 47 seals the heat dissipation groove 12 so that the cabinet 1 is relatively sealed, thereby facilitating the subsequent closed circulation drying of the internal air, and the dehumidification effect is good. At that time, the protrusion 41 just moves to the right to the end of the straight groove in the guide groove 39. Subsequently, as the telescopic cylinder 45 continues to extend and drives the wedge block 44 to move upward, the elastic rod 46 is automatically compressed, and the grid plate 47 maintains the sealing state of the heat dissipation groove 12, while the protrusion 41 moves to squeeze the arc groove in the guide groove 39, driving the valve plate 38 to deflect counterclockwise so that the material bin in the valve disc 33 provides an effective storage space.

[0046] Subsequently, when the humidity sensor 14 detects that the humidity in the cabinet 1 has dropped to a corresponding stage, the telescopic cylinder 45 contracts in direct proportion, thereby driving the valve plate 38 to deflect in the reset direction to reduce the effective storage space of the silo in the valve disc 33, reduce the amount of desiccant used, and avoid waste. When the telescopic cylinder 45 contracts until the protrusion 41 is just movably engaged with the end of the straight groove in the guide groove 39, the grid plate 47 still maintains a sealed state for the heat dissipation groove 12, and the valve plate 38 is reset to completely seal the silo in the valve disc 33. The desiccant is only released in a small amount through the material port 36, and the release of the desiccant is relatively small and tends to stop. As the fan 62 continues to blow air, the desiccant on the surface of the filter toothed disc 7 can be fully utilized to dry the air, and excessive release of the desiccant is avoided, resulting in failure and waste.

[0047] Embodiment 4, as Figure 5 As shown, a touch switch 32 is fixedly installed on the right rear wall of the sealing cover 3, and a pin 35 is fixedly connected to the rear side of the right wall of the valve disc 33. The pin 35 can squeeze the touch switch 32, and the touch switch 32 electrically controls the telescopic cylinder 45.

[0048] When the humidity sensor 14 detects that the humidity in the cabinet 1 has dropped to the corresponding stage, and the valve disc 33 rotates counterclockwise to drive the pin 35 to squeeze the trigger switch 32, the telescopic cylinder 45 contracts proportionally according to the signal of the trigger switch 32, thereby avoiding the situation where the valve disc 33 fails to release the desiccant in time, and the telescopic cylinder 45 contracts and drives the valve plate 38 to reset and deflect to reduce the effective storage space of the silo, causing the desiccant to be hard pressed and then force the silo to be damaged or the desiccant to be squeezed and leaked.

[0049] Embodiment 5, as Figure 3-Figure 5 As shown, a conical worm gear 6 is rotatably connected to the bottom of the inner cavity of the cabinet 1, a driving motor is fixedly installed on the front wall of the inner cavity of the cabinet 1, the output end of the driving motor is fixedly connected to the conical worm gear 6, the driving motor is electrically connected to the humidity sensor 14, and a worm gear 34 is fixedly sleeved on the right end of the valve disc 33, and the worm gear 34 is meshingly connected to the conical worm gear 6.

[0050] Furthermore, a bevel gear rod 61 is rotatably inserted at the bottom of the guide tube 5 , the bevel gear rod 61 is rotatably connected to the left wall of the inner cavity of the cabinet 1 , the bevel gear rod 61 is meshedly connected to the cone-head worm 6 , and the fan 62 is fixedly connected to the right end of the bevel gear rod 61 .

[0051] During dehumidification and drying, the driving motor drives the cone-head worm 6 to rotate rapidly, and the cone-head worm 6 drives the cone gear rod 61 to make the fan 62 rotate rapidly to ensure that sufficient air flow effect is provided. When the cone-head worm 6 rotates, it synchronously drives the worm gear 34 to slow down the rotation of the valve disc 33. The valve disc 33 rotates at a low speed to release the desiccant intermittently. The amount of desiccant added can be controlled to avoid excessive amount.

[0052] Embodiment six, as Figure 4As shown, a gear rod 72 is rotatably installed on the upper side of the bottom of the guide tube 5, and the gear rod 72 is meshed and connected with the two filter toothed discs 7. The outer periphery of the filter toothed discs 7 is provided with corresponding tooth grooves, and a notch adapted to the gear rod 72 and the filter toothed discs 7 is provided on the upper side of the bottom of the guide tube 5, and a transmission belt 73 is movably connected between the gear rod 72 and the valve disc 33.

[0053] When the valve disc 33 rotates at a low speed, the transmission belt 73 drives the gear rod 72 to rotate synchronously at a low speed, and the gear rod 72 engages to drive the two filter tooth discs 7 to rotate at a low speed, so that the scraper bar 71 can stably clean the surface of the filter tooth disc 7 to avoid the desiccant absorbing water and adhering to the filter tooth disc 7 to cause blockage, thereby affecting the circulation drying efficiency.

[0054] Embodiment seven, as Figure 1-Figure 3 As shown, a protective cover 8 is fixedly connected to the bottom of the inner cavity of the cabinet 1, and the protective cover 8 is above the sealing cover 3. Support legs 13 are fixedly connected around the bottom of the cabinet 1, and the collecting tube 55 is movably plugged into the lower wall of the cabinet 1.

[0055] The protective cover 8 can relatively shield and protect the transmission parts such as the cone-head worm 6, the worm gear 34, the transmission belt 73 and the gear rod 72, thereby ensuring safe use; the design of the support leg 13 elevates part of the cabinet 1 to prevent rainwater from seeping in from the bottom, and the collecting tube 55 is inserted into the lower wall of the cabinet 1 and extends outward from the bottom of the cabinet 1, which not only makes it easy to lower the installation height of the drying and dehumidifying part, but also makes it easy to quickly remove the collecting tube 55 from the outside for processing.

[0056] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A PLC control cabinet, comprising a cabinet body (1), characterized in that: The cabinet body (1) is movably connected to a cabinet door (11) at the front side, a heat dissipation groove (12) with an outer side inclined downward is provided on the left wall of the cabinet body (1), a humidity sensor (14) is fixedly installed on the left wall of the inner cavity of the cabinet body (1), a desiccant cylinder (2) is fixedly connected to the left wall of the inner cavity of the cabinet body (1), a sealing cover (21) is threadedly connected to the top of the desiccant cylinder (2), a material guide assembly is provided in the desiccant cylinder (2), a sealing cover (3) is fixedly connected to the bottom of the desiccant cylinder (2), material holes (31) are provided on both the upper and lower sides of the sealing cover (3), the bottom of the inner cavity of the desiccant cylinder (2) is contracted to form a cone mouth, the cone mouth is butted with the material hole (31) on the upper side, a valve disc (33) is rotatably connected to the sealing cover (3), a material bin is provided inside the valve disc (33), a material bin has a material opening (36) at the rear side, a valve plate (38) is rotatably connected to the material bin, and a grid plate (47) is slidably clamped to the left wall of the inner cavity of the cabinet body (1); A flow guide tube (5) is fixedly installed at the bottom of the inner cavity of the cabinet (1); the upper and lower ends of the flow guide tube (5) are fixedly connected to hollow flow-guiding strips (51); a plurality of flow-guiding holes (52) are evenly spaced on the opposite sides of the two flow-guiding strips (51); the bottom of the flow guide tube (5) has a contraction section (53); the bottom of the contraction section (53) is fixedly connected to a funnel tube (54); the bottom of the funnel tube (54) is threadedly connected to a collecting tube (55); the funnel tube A recovery pipe (56) is fixedly connected between the funnel pipe (54) and the guide pipe (5), an output pipe (57) is fixedly connected between the funnel pipe (54) and the material hole (31) at the lower side, an inclined filter plate (58) is fixedly connected to the bottom of the inner cavity of the funnel pipe (54), the inclined filter plate (58) partitions the funnel pipe (54) up and down, the recovery pipe (56) is communicated with the lower side of the funnel pipe (54), and the output pipe (57) is communicated with the upper side of the funnel pipe (54); The inner cavity at the bottom of the guide tube (5) is provided with a fan (62). The inner cavity at the bottom of the guide tube (5) is rotatably connected to two filter toothed discs (7). The two filter toothed discs (7) are respectively located on the left and right sides of the contraction section (53). The two filter toothed discs (7) are provided with scraping strips (71) on the opposite sides of the two filter toothed discs (7). The scraping strips (71) are fixedly connected to the upper wall of the inner cavity of the guide tube (5). The scraping strips (71) are movably abutted against the surface of the filter toothed discs (7). The fan (62) is located on the left side of the two filter toothed discs (7).

2. A PLC control cabinet according to claim 1, characterized in that: The material guide assembly comprises a bracket (22) fixedly connected to the upper and lower sides of the inner cavity of the desiccant cylinder (2), a connecting sleeve (23) fixedly connected to the upper bracket (22), an elastic material discharge rod (24) slidably connected to the middle of the two brackets (22), the elastic material discharge rod (24) being elastically connected to the top of the inner cavity of the connecting sleeve (23), the elastic material discharge rod (24) being movably abutted against the periphery of the valve disc (33) and being in a compressed state, and a corrugated strip (37) being fixedly connected to the material port (36).

3. A PLC control cabinet according to claim 2, characterized in that: A guide groove (39) is provided on the inner wall of the shaft of the valve plate (38); a spring column (4) is slidably engaged with the middle of the valve disc (33); a convex block (41) is provided on the upper surface of the spring column (4); the convex block (41) is movably engaged with the guide groove (39); the guide groove (39) is composed of a straight groove on the left and an arc groove on the right; the left end of the arc groove coincides with the right end of the straight groove; and the arc groove extends in a spiral from the left end backward and to the right; the left end of the spring column (4) is rotatably connected with a clamping block (42) The clamping block (42) is slidably clamped with the left side of the sealing cover (3); a wedge groove (43) is provided on the left side of the clamping block (42); a wedge block (44) is movably connected in the wedge groove (43); the wedge block (44) and the wedge groove (43) both have inclined surfaces and are movably abutted by the inclined surfaces; a telescopic cylinder (45) is fixedly installed on the left wall of the inner cavity of the cabinet (1); a top telescopic end of the telescopic cylinder (45) is fixedly connected to the wedge block (44); and the humidity sensor (14) negatively feedback controls the telescopic cylinder (45).

4. A PLC control cabinet according to claim 3, characterized in that: An elastic rod (46) is slidably inserted into the top of the wedge block (44); the elastic rod (46) is fixedly connected to the grid plate (47); and the elastic rod (46) is slidably inserted into the desiccant cylinder (2).

5. A PLC control cabinet according to claim 4, characterized in that: The grid plate (47) has a plurality of through grooves that are connected to the heat dissipation grooves (12), and the left wall of the inner cavity of the cabinet (1) is provided with a sliding groove corresponding to the grid plate (47).

6. A PLC control cabinet according to claim 5, characterized in that: A touch switch (32) is fixedly mounted on the right rear wall of the sealing cover (3), and a pin (35) is fixedly connected to the rear side of the right wall of the valve disc (33). The pin (35) is capable of squeezing the touch switch (32), and the touch switch (32) electrically controls the telescopic cylinder (45).

7. A PLC control cabinet according to claim 6, characterized in that: A conical worm gear (6) is rotatably connected to the bottom of the inner cavity of the cabinet (1); a drive motor is fixedly mounted on the front wall of the inner cavity of the cabinet (1); an output end of the drive motor is fixedly connected to the conical worm gear (6); the drive motor is electrically connected to the humidity sensor (14); a worm gear (34) is fixedly sleeved on the right end of the valve disc (33); and the worm gear (34) is meshingly connected to the conical worm gear (6).

8. A PLC control cabinet according to claim 7, characterized in that: A bevel gear rod (61) is rotatably plugged into the bottom of the guide tube (5); the bevel gear rod (61) is rotatably connected to the left wall of the inner cavity of the cabinet (1); the bevel gear rod (61) is meshingly connected to the cone-head worm gear (6); and the fan (62) is fixedly connected to the right end of the bevel gear rod (61).

9. A PLC control cabinet according to claim 8, characterized in that: A gear rod (72) is rotatably mounted on the upper side of the bottom of the guide tube (5); the gear rod (72) is meshingly connected with the two filter toothed discs (7); corresponding tooth grooves are provided on the periphery of the filter toothed discs (7); a notch adapted to the gear rod (72) and the filter toothed discs (7) is provided on the upper side of the bottom of the guide tube (5); and a transmission belt (73) is movably sleeved between the gear rod (72) and the valve disc (33).

10. A PLC control cabinet according to claim 9, characterized in that: A protective cover (8) is fixedly connected to the bottom of the inner cavity of the cabinet (1), and the protective cover (8) is located above the sealing cover (3). Support legs (13) are fixedly connected to the four sides of the bottom of the cabinet (1), and the collecting tube (55) is movably plugged into the lower wall of the cabinet (1).

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