Positive and negative pressure system control cabinet with front and back doors

Abstract

The utility model discloses a positive and negative pressure system control cabinet with front and back doors relates to control cabinet technical field, including the cabinet, one end outer wall of cabinet is hinged with the front cabinet door through the hinge, the other end outer wall of cabinet is hinged with the back cabinet door through the hinge, the front cabinet door and back cabinet door cover the outside of cabinet two side openings respectively, the inside of cabinet is equipped with two structure exactly same's plugging assembly, two plugging assembly symmetry sets up, the plugging assembly includes two gas collector fixedly connected in the inside of cabinet, one nozzle is fixedly connected with two outside gas collector, one connecting pipe is rotatably connected with two gas collector top one end, the utility model discloses a plugging assembly can form the air curtain at the cabinet opening when one cabinet door opens, effectively avoid the dust in the air to enter the inside of cabinet, is favorable to guarantee the service life of equipment in the cabinet.

Description

Technical Field

[0001] This utility model relates to the field of control cabinet technology, specifically a positive and negative pressure system control cabinet with front and rear doors. Background Technology

[0002] The core essence of a positive and negative pressure system control cabinet is a special electrical control device used to control positive and negative pressure systems. Its core function is to realize the automated monitoring, regulation and safety protection of positive and negative pressure systems through integrated hardware and software systems.

[0003] A search revealed a utility model patent with Chinese patent publication number CN213959375U, which discloses a heat dissipation and dustproof control cabinet, comprising a base, a cabinet body, an air outlet, a radiator, an air inlet, a dustproof box, a mounting plate, a cabinet door, and a switch. The base is rectangular, the bottom of the cabinet body is fixed to the top of the base, the air outlet is located at the center of the top of the cabinet body, the radiator is installed at the air outlet, two air inlets are located at the lower left and right ends of the cabinet body, and two dustproof boxes are respectively installed at the two air inlets.

[0004] The aforementioned control cabinet creates a negative pressure by extracting air from inside the cabinet, thereby forcing external air into the cabinet to achieve heat dissipation and dust prevention. However, when maintaining the control cabinet, the cabinet door needs to be opened. If the location is a dusty environment, dust in the air will more or less enter the cabinet, lacking protective measures. Utility Model Content

[0005] The purpose of this utility model is to provide a positive and negative pressure system control cabinet with front and rear doors to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a positive and negative pressure system control cabinet with front and rear doors, comprising a cabinet body, a front door hinged to one end of the outer wall of the cabinet body, and a rear door hinged to the other end of the outer wall of the cabinet body. The front and rear doors respectively cover the openings on both sides of the cabinet body. The cabinet body contains two identical sealing components arranged symmetrically. Each sealing component includes two gas collecting pipes fixedly connected inside the cabinet body. A nozzle is fixedly connected to the outside of each of the two gas collecting pipes. A connecting pipe is rotatably connected to the top end of each of the two gas collecting pipes. A retaining ring is fixedly connected inside each of the two gas collecting pipes and the two connecting pipes, with adjacent retaining rings in contact with each other. A rotary joint is fixedly connected to the top end of each of the two connecting pipes. Two supports are fixedly connected to the top outer wall of the cabinet body. The fixed ends of the two rotary joints are respectively fixedly connected to the inside of the two supports. A linkage structure is fixedly connected to the outside of the two connecting pipes. An air supply component is fixedly connected to the top of the cabinet body, and a support component is fixedly connected to the bottom of the cabinet body.

[0007] When one of the cabinet doors is opened, an air curtain is formed at the cabinet opening, effectively preventing dust from entering the cabinet and ensuring the lifespan of the equipment inside. Air then enters the rotary joint through the air supply pipe, then the connecting pipe through the rotary joint, then the collecting pipe through the gap of the baffle ring, and finally is sprayed out through the nozzle. This airflow blows on the equipment inside the cabinet, completing heat exchange and improving the heat dissipation effect of the equipment's built-in heat dissipation structure. After the front cabinet door is opened, its top push rod is driven to rotate synchronously. After the end of the front cabinet door contacts the side of the cabinet, the front cabinet door is attracted by the magnet fixed on the side of the cabinet and no longer changes position. The push rod also pushes the extension rod to drive the connecting pipe to rotate. The baffle ring inside the connecting pipe can seal the gap of the baffle ring inside the collecting pipe, which can prevent the airflow from the nozzle near the cabinet opening from causing defects in the air curtain. At this time, only the two nozzles opposite the front cabinet door are expelling air, and the opening of the cabinet will form an air curtain, effectively preventing outside air from entering.

[0008] As a further preferred embodiment of this technical solution, the linkage structure includes two sprockets coaxially fixed to the outside of two connecting pipes, the two sprockets being fitted with the same chain, an extension rod being fixedly connected to the outside of one of the connecting pipes, a horizontally arranged spring being fixedly connected to the outer wall of the top of the cabinet, one end of the spring being fixedly connected to the outside of the extension rod, and a trigger being fixedly connected to the outside of the front cabinet door.

[0009] As a further preferred embodiment of this technical solution, the trigger includes a push rod fixedly connected to the outside of the front cabinet door, the end of the push rod corresponding to the position of the extension rod.

[0010] As a further preferred embodiment of this technical solution, the air supply assembly includes an installation chamber fixedly connected to the outer wall of the top of the cabinet. A fan is fixedly connected to the outer wall of one end of the installation chamber. The air outlet of the fan is located inside the installation chamber. A sealing frame is fixedly connected to the top of the installation chamber. A horizontally arranged filter cartridge is fixedly connected inside the sealing frame. Two air supply pipes are fixedly connected to the outer walls of both sides of the installation chamber. The four air supply pipes are respectively fixedly connected to the top of the four retaining ring fixing ends.

[0011] As a further preferred embodiment of this technical solution, several heat dissipation holes are provided on both outer walls of the cabinet, and a mounting cover is fixedly connected to both outer walls of the cabinet. The two mounting covers respectively surround the several heat dissipation holes on the same side, and a filter screen is fixedly connected inside the two mounting covers.

[0012] As a further preferred embodiment of this technical solution, the support assembly includes four support columns fixedly connected to the four corners of the bottom outer wall of the cabinet. Each of the four support columns is rotatably connected to a mounting ring. Each of the four mounting rings is fixedly connected to a horizontally arranged extension arm. The four mounting rings are fixedly connected to the same transmission structure.

[0013] If the cabinet is located in an area with high foot traffic, grasp one end of the extension arm and pull it outward. The extension arm will drive the mounting ring to rotate, which in turn drives the external sprocket two to rotate. The sprocket two, through the chain two, drives the sprocket two outside the other mounting rings to rotate in the same direction. The extension arms fixed outside the other mounting rings will also be driven to rotate synchronously until the position of the extension arm is adjusted to the state shown in the figure and stops. Extending the extension arm can expand the support range of the cabinet, ensuring that the cabinet is more stable after being hit by external force and will not easily tip over.

[0014] As a further preferred embodiment of this technical solution, the transmission structure includes four sprockets two coaxially fixed to the outside of four mounting rings, and two adjacent sprockets two are fitted with the same chain two.

[0015] This utility model provides a positive and negative pressure system control cabinet with front and rear doors, which has the following advantages: (1) By setting a sealing component, this utility model can form an air curtain at the cabinet opening when one of the cabinet doors is opened, effectively preventing dust in the air from entering the cabinet and ensuring the service life of the equipment inside the cabinet. The air then enters the rotary joint through the air supply pipe, then enters the connecting pipe through the rotary joint, then enters the air collection pipe through the gap of the baffle ring, and finally sprays out through the nozzle. These airflows can blow on the equipment inside the cabinet, thus completing heat exchange and improving the heat dissipation effect of the equipment's built-in heat dissipation structure. When the front cabinet door is opened, its top push rod is driven to rotate synchronously. After the end of the front cabinet door contacts the side of the cabinet, the front cabinet door is attracted by the magnet fixed on the side of the cabinet and no longer changes position. The push rod will also push the extension rod to drive the connecting pipe to rotate. The baffle ring inside the connecting pipe can seal the gap of the baffle ring inside the air collection pipe, which can prevent the airflow from the nozzle near the cabinet opening from causing defects in the air curtain. At this time, only the two nozzles opposite the front cabinet door are emitting air, and the opening of the cabinet will form an air curtain, effectively preventing external air from entering.

[0016] (2) By setting up a support component, if the cabinet is set in an area with high traffic, grab one of the extension arms and push it outward. The extension arm drives the mounting ring to rotate, and the mounting ring drives the external sprocket two to rotate. The sprocket two drives the sprocket two outside the other mounting rings to rotate in the same direction through the chain two. The extension arms fixed outside the other mounting rings will also be driven to rotate synchronously until the position of the extension arm is adjusted to the state shown in the figure and stops. Extending the extension arm can expand the support range of the cabinet and ensure that the cabinet is more stable after being hit by external force and will not easily tip over. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model; Figure 2 This is a schematic diagram of the overall second-view structure of this utility model; Figure 3 This is a partially enlarged structural diagram of the sealing component of this utility model; Figure 4 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle; In the diagram: 1. Cabinet body; 2. Front cabinet door; 3. Rear cabinet door; 4. Sealing assembly; 5. Air supply assembly; 6. Support assembly; 401. Air collection pipe; 402. Nozzle; 403. Connecting pipe; 404. Retaining ring; 405. Extension rod; 406. Spring; 407. Push rod; 408. Sprocket one; 501. Installation chamber; 502. Sealing frame; 503. Filter cartridge; 504. Fan; 505. Air supply pipe; 601. Support column; 602. Mounting ring; 603. Extension arm; 604. Sprocket two. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0019] This utility model provides a technical solution as follows: Figure 2 , Figure 3As shown in Figure 4, in this embodiment, a positive and negative pressure system control cabinet with front and rear doors includes a cabinet 1 (the cabinet 1 is equipped with a pressure control system and an electrical control system. The pressure control system includes a pressure sensor, an air source processing unit (including a positive pressure air source and a negative pressure air source), an electric regulating valve (a linear electric valve is used for positive pressure control, and an angle electric valve is used for negative pressure control), and a pneumatic quick-cut valve (for emergency pressure relief). The electrical control system includes a PLC controller (Siemens S7-1200), a power supply system (main power AC380V / 50Hz, equipped with a circuit breaker), and a communication module (supporting Ethernet, 4G / 5G, realizing remote monitoring and data upload, using a SCADA system)). A front cabinet door 2 is hinged to one end of the outer wall of the cabinet 1, and a rear cabinet door 3 is hinged to the other end of the outer wall of the cabinet 1. The front cabinet door 2 and the rear cabinet door 3 respectively cover the... The cabinet 1 has openings on both sides. Inside the cabinet 1, there are two sealing components 4 with identical structures. The two sealing components 4 are arranged symmetrically. Each sealing component 4 includes two gas collecting pipes 401 fixedly connected inside the cabinet 1. Each gas collecting pipe 401 has a nozzle 402 fixedly connected to its exterior. Each gas collecting pipe 401 has a connecting pipe 403 rotatably connected to its top end. Each gas collecting pipe 401 and each connecting pipe 403 has a retaining ring 404 fixedly connected inside its interior. Two adjacent retaining rings 404 are in contact with each other. Each connecting pipe 403 has a rotating joint fixedly connected to its top end. Two brackets are fixedly connected to the top outer wall of the cabinet 1. The fixed ends of the two rotating joints are fixedly connected to the two brackets respectively. A linkage structure is fixedly connected to the exterior of the two connecting pipes 403. An air supply component 5 is fixedly connected to the top of the cabinet 1. A support component 6 is fixedly connected to the bottom of the cabinet 1.

[0020] The linkage structure includes two sprockets 408 coaxially fixed to the outside of two connecting pipes 403, the two sprockets 408 are fitted with the same chain, an extension rod 405 is fixedly connected to the outside of one of the connecting pipes 403, a horizontally arranged spring 406 is fixedly connected to the top outer wall of the cabinet 1, one end of the spring 406 is fixedly connected to the outside of the extension rod 405, and a trigger is fixedly connected to the outside of the front cabinet door 2.

[0021] The triggering element includes a push rod 407 fixedly connected to the outside of the front cabinet door 2, the end of the push rod 407 corresponding to the position of the extension rod 405, and another push rod 407 fixedly connected to the outside of the rear cabinet door 3.

[0022] Air then enters the rotary joint through the air supply pipe 505, then enters the connecting pipe 403 through the rotary joint, then enters the air collecting pipe 401 through the gap of the baffle ring 404, and finally is ejected outward through the nozzle 402. This airflow can blow on the equipment inside the cabinet 1, thus completing heat exchange and improving the heat dissipation effect of the equipment's built-in heat dissipation structure. When the front cabinet door 2 is opened, its top push rod 407 is driven to rotate synchronously. After the end of the front cabinet door 2 contacts the side of the cabinet 1, the front cabinet door 2 is attracted by the magnet fixed on the side of the cabinet 1 and no longer changes position. The push rod 407 will also push the extension rod 405 to drive the connecting pipe 403 to rotate. The baffle ring 404 inside the connecting pipe 403 can block the gap of the baffle ring 404 inside the air collecting pipe 401, which can prevent the airflow ejected by the nozzle 402 near the opening of the cabinet 1 from causing defects in the air curtain. At this time, only the two nozzles 402 opposite the front cabinet door 2 emit air, and the opening of the cabinet 1 will form an air curtain, effectively preventing external air from entering.

[0023] like Figure 1 and Figure 4 As shown, the air supply assembly 5 includes an installation chamber 501 fixedly connected to the top outer wall of the cabinet 1. A fan 504 is fixedly connected to one end of the outer wall of the installation chamber 501. The air outlet of the fan 504 is located inside the installation chamber 501. A sealing frame 502 is fixedly connected to the top of the installation chamber 501. A horizontally arranged filter cartridge 503 is fixedly connected inside the sealing frame 502. Two air supply pipes 505 are fixedly connected to both sides of the outer wall of the installation chamber 501. The four air supply pipes 505 are respectively fixedly connected to the top of the fixed ends of the four retaining rings 404.

[0024] The fan 504 at the end of the installation chamber 501 is started, and the fan 504 draws outside air into the installation chamber 501. The air then enters the filter cartridge 503 and is filtered by the filter cartridge 503 before entering the four air supply pipes 505, which can ensure the cleanliness of the outside air when it enters.

[0025] Several ventilation holes are provided on both outer walls of the cabinet 1. A mounting cover is fixedly connected to both outer walls of the cabinet 1. The two mounting covers surround the ventilation holes on the same side. A filter screen is fixedly connected inside the two mounting covers, so that the air inside the cabinet 1 can escape through the ventilation holes, while the particulate matter in the outside air cannot enter the cabinet 1 due to the presence of the filter screen.

[0026] like Figure 1 As shown in Figure 2, the support assembly 6 includes four support columns 601 fixedly connected to the four corners of the bottom outer wall of the cabinet 1. Each of the four support columns 601 is rotatably connected to a mounting ring 602. Each of the four mounting rings 602 is fixedly connected to a horizontally set extension arm 603. The four mounting rings 602 are fixedly connected to the same transmission structure.

[0027] The transmission structure includes four sprockets 604 coaxially fixed to the outside of four mounting rings 602, and the same chain 604 is fitted onto two adjacent sprockets 604.

[0028] If cabinet 1 is located in an area with high foot traffic, grasp one end of the extension arm 603 and pull it outward. The extension arm 603 will drive the mounting ring 602 to rotate, which in turn drives the external sprocket 604 to rotate. The sprocket 604, via the chain, will drive the other sprockets 604 outside the mounting rings 602 to rotate in the same direction. The extension arms 603 fixed outside the other mounting rings 602 will also be driven to rotate synchronously until the position of the extension arm 603 is adjusted to... Figure 2 When the state stops, the extension arm 603 extends to expand the support range of the cabinet 1, ensuring that the cabinet 1 is more stable after being hit by external force and will not easily tip over.

[0029] This utility model provides a positive and negative pressure system control cabinet with front and rear doors. The specific working principle is as follows: When the device is in operation, the fan 504 at the end of the installation chamber 501 starts, drawing outside air into the installation chamber 501. The air then enters the filter cartridge 503, and after being filtered, it enters the four air supply pipes 505, ensuring the cleanliness of the incoming outside air. The air then passes through the air supply pipes 505 into the rotary joint, then through the rotary joint into the connecting pipe 403, then through the gap in the retaining ring 404 into the collecting pipe 401, and finally is ejected outwards through the nozzles 402. This airflow circulates the equipment inside the cabinet 1, thus completing heat exchange and improving the heat dissipation of the equipment's built-in cooling structure. As a result, when the front cabinet door 2 is opened, its top push rod 407 is driven to rotate synchronously. After the end of the front cabinet door 2 contacts the side of the cabinet body 1, the front cabinet door 2 is attracted by the magnet fixed on the side of the cabinet body 1 and no longer changes position. The push rod 407 will also push the extension rod 405 to drive the connecting pipe 403 to rotate. The retaining ring 404 inside the connecting pipe 403 can block the gap of the retaining ring 404 inside the air collection pipe 401, which can prevent the airflow from the nozzle 402 near the opening of the cabinet body 1 from causing defects in the air curtain. At this time, only the two nozzles 402 opposite the front cabinet door 2 will emit air, and the opening of the cabinet body 1 will form an air curtain, effectively preventing the outside air from entering.

[0030] If cabinet 1 is located in an area with high foot traffic, grasp one end of the extension arm 603 and pull it outward. The extension arm 603 will drive the mounting ring 602 to rotate, which in turn drives the external sprocket 604 to rotate. The sprocket 604, via the chain, will drive the other sprockets 604 outside the mounting rings 602 to rotate in the same direction. The extension arms 603 fixed outside the other mounting rings 602 will also be driven to rotate synchronously until the position of the extension arm 603 is adjusted to... Figure 2When the state stops, the extension arm 603 extends to expand the support range of the cabinet 1, ensuring that the cabinet 1 is more stable after being hit by external force and will not easily tip over.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positive and negative pressure system control cabinet with front and rear doors, comprising a cabinet body (1), wherein a front cabinet door (2) is hinged to one end of the outer wall of the cabinet body (1) via a hinge, and a rear cabinet door (3) is hinged to the other end of the outer wall of the cabinet body (1) via a hinge, wherein the front cabinet door (2) and the rear cabinet door (3) respectively cover the outside of the openings on both sides of the cabinet body (1), characterized in that: The cabinet (1) is equipped with two sealing components (4) with identical structures. The two sealing components (4) are arranged symmetrically. Each sealing component (4) includes two gas collecting pipes (401) fixedly connected inside the cabinet (1). Each of the two gas collecting pipes (401) is fixedly connected to a nozzle (402). Each of the top ends of the two gas collecting pipes (401) is rotatably connected to a connecting pipe (403). Each of the two gas collecting pipes (401) and the two connecting pipes (403) is fixedly connected to a retaining ring (404). The two adjacent retaining rings (404) are in contact with each other. Each of the top ends of the two connecting pipes (403) is fixedly connected to a rotary joint. The top outer wall of the cabinet (1) is fixedly connected to two supports. The fixed ends of the two rotary joints are respectively fixedly connected to the two supports. The two connecting pipes (403) are fixedly connected to a linkage structure. The top of the cabinet (1) is fixedly connected to a gas supply component (5). The bottom of the cabinet (1) is fixedly connected to a support component (6).

2. The positive and negative pressure system control cabinet with front and rear doors according to claim 1, characterized in that: The linkage structure includes two sprockets (408) coaxially fixed to the outside of two connecting pipes (403), the two sprockets (408) are fitted with the same chain, an extension rod (405) is fixedly connected to the outside of one of the connecting pipes (403), a horizontally arranged spring (406) is fixedly connected to the top outer wall of the cabinet (1), one end of the spring (406) is fixedly connected to the outside of the extension rod (405), and a trigger is fixedly connected to the outside of the front cabinet door (2).

3. A positive and negative pressure system control cabinet with front and rear doors according to claim 2, characterized in that: The triggering element includes a push rod (407) fixedly connected to the outside of the front cabinet door (2), and the end position of the push rod (407) corresponds to the position of the extension rod (405).

4. A positive and negative pressure system control cabinet with front and rear doors according to claim 1, characterized in that: The air supply assembly (5) includes an installation chamber (501) fixedly connected to the top outer wall of the cabinet (1). A fan (504) is fixedly connected to one end of the outer wall of the installation chamber (501). The air outlet of the fan (504) is located inside the installation chamber (501). A sealing frame (502) is fixedly connected to the top of the installation chamber (501). A horizontally arranged filter cartridge (503) is fixedly connected inside the sealing frame (502). Two air supply pipes (505) are fixedly connected to the outer walls on both sides of the installation chamber (501). The four air supply pipes (505) are respectively fixedly connected to the top of the four retaining rings (404).

5. A positive and negative pressure system control cabinet with front and rear doors according to claim 1, characterized in that: The cabinet (1) has several heat dissipation holes on both sides of its outer wall. A mounting cover is fixedly connected to both sides of the cabinet (1). The two mounting covers surround the outside of several heat dissipation holes on the same side. A filter screen is fixedly connected inside the two mounting covers.

6. A positive and negative pressure system control cabinet with front and rear doors according to claim 1, characterized in that: The support assembly (6) includes four support columns (601) fixedly connected to the four corners of the bottom outer wall of the cabinet (1). Each of the four support columns (601) is rotatably connected to an installation ring (602). Each of the four installation rings (602) is fixedly connected to a horizontally arranged extension arm (603). The four installation rings (602) are fixedly connected to the same transmission structure.

7. A positive and negative pressure system control cabinet with front and rear doors according to claim 6, characterized in that: The transmission structure includes four sprockets (604) coaxially fixed to the outside of four mounting rings (602), and two adjacent sprockets (604) are fitted with the same chain.

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