Positive and negative pressure switching equipment for operating room

Abstract

The utility model discloses an operating room positive and negative pressure switching device, and relates to the operating room positive and negative pressure switching technical field, the operating room positive and negative pressure switching device comprises an operating room body, the upper surface of the operating room body is fixedly provided with an anti-blocking mechanism, the anti-blocking mechanism comprises a connecting box, and the inner wall of the connecting box is fixedly provided with an electrostatic dust collector; a ball screw is rotationally connected into the connecting box, a rotating motor is arranged on the left side of the connecting box, the left end of the ball screw penetrates through the connecting box and is fixedly connected with the power output end of the rotating motor, a scraping plate is in threaded connection with the outer surface of the ball screw, and a fixing box is fixedly installed on the inner bottom wall of the connecting box. The left side face of the fixing box makes contact with the right side face of the electrostatic dust collector, the right side face of the fixing box fixedly communicates with a conveying pipe, and a collecting box is fixedly installed on the upper surface of the operating room body. The operating room body and the anti-blocking mechanism are matched for use, so that the anti-blocking purpose of the filtering device is achieved, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of positive and negative pressure switching in operating rooms, and specifically relates to a positive and negative pressure switching device for operating rooms. Background Technique

[0002] The positive and negative pressure conversion operating room is an integration of a positive pressure operating room and a negative pressure operating room. Both positive and negative pressure conditions should be comprehensively considered. In the positive pressure state, it is for ordinary patients, and the ventilation system mainly protects the surgical patients. In the negative pressure state, it is for infectious disease patients, especially patients with highly contagious respiratory infectious diseases, to protect the surrounding environment outdoors and avoid the leakage of pollutants causing nosocomial and community infections.

[0003] The utility model disclosed in the utility model with the authorization announcement number CN213931231U is a positive and negative pressure switching purification operating room air conditioning system. A battery box is arranged at the front end of the clean air conditioner, and the battery box is fixedly connected to the battery box. A fresh air pipe is arranged on the clean air conditioner, and the fresh air pipe is connected to the clean air conditioner by argon arc welding. An air cavity is arranged at the lower end of the fresh air pipe, a primary filter plate is arranged on one side of the air cavity, the primary filter plate is attached to the clean air conditioner, and a surface cooler is arranged on one side of the primary filter plate.

[0004] Although this device solves the problem in the prior art that the positive and negative pressure switching of the air conditioner cannot be completed relatively quickly, when this device is in use, since the outside air often contains a large amount of large particle solid dust, and this device does not have the function of preventing the filter plate from being blocked, when this device is used for a long time, it is easy to cause the phenomenon of the filter plate being blocked, which in turn affects the intake of outside air, and thus reduces the practicability of this device; for this reason, we provide a positive and negative pressure switching device for operating rooms to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to make up for the deficiencies of the prior art and provide a positive and negative pressure switching device for operating rooms.

[0006] To achieve the above object, the utility model provides the following technical solution: A positive and negative pressure switching device for an operating room, including an operating room body, on the upper surface of the operating room body, a clogging prevention mechanism is fixedly installed. The clogging prevention mechanism includes a connection box, on the inner wall of the connection box, an electrostatic precipitator is fixedly installed. Inside the connection box, a ball screw is rotatably connected. On the left side of the connection box, a rotation motor is provided. The left end of the ball screw penetrates through the connection box and is fixedly connected to the output end of the power of the rotation motor. A scraper is threadedly connected to the outer surface of the ball screw. On the inner bottom wall of the connection box, a fixed box is fixedly installed. The left side surface of the fixed box is in contact with the right side surface of the electrostatic precipitator. A delivery pipe is fixedly communicated with the right side surface of the fixed box. On the upper surface of the operating room body, a collection box is fixedly installed. One end of the delivery pipe away from the fixed box penetrates through the connection box and extends into the interior of the collection box. On the upper surface of the collection box, a first blower is fixedly installed. The input end of the power of the first blower penetrates through the collection box and extends into the interior of the collection box. On the inner top wall of the collection box, a dust-proof net is fixedly installed.

[0007] Further, on the upper surface of the operating room body, a purification box and a second blower are respectively fixedly installed. The input end of the power of the second blower penetrates through the connection box and extends into the interior of the connection box. The output end of the power of the second blower penetrates through the purification box and extends into the interior of the purification box. Inside the purification box, a filter screen frame and an activated carbon adsorption plate are respectively clamped. On the inner wall of the purification box, an ultraviolet sterilization lamp is fixedly installed. On the left side surface of the purification box, a connection pipe is fixedly communicated. The bottom end of the connection pipe penetrates through the operating room body and extends into the interior of the operating room body.

[0008] Further, on the outer surface of the operating room body, a main return air duct, a negative pressure return air duct, a negative pressure exhaust duct and a positive pressure exhaust duct are respectively fixedly communicated. One end of the main return air duct away from the operating room body penetrates through the connection box and extends into the interior of the connection box. The bottom end of the negative pressure return air duct penetrates through the main return air duct and extends into the interior of the main return air duct. Filters are fixedly installed inside the main return air duct, the negative pressure return air duct, the negative pressure exhaust duct and the positive pressure exhaust duct. Solenoid valves are fixedly installed on the outer surfaces of the main return air duct, the negative pressure return air duct, the negative pressure exhaust duct and the positive pressure exhaust duct. Exhaust pumps are fixedly installed at the bottom ends of the negative pressure exhaust duct and the positive pressure exhaust duct.

[0009] Further, a support platform is fixedly installed on the bottom surface of the rotation motor. The right side surface of the support platform is fixedly connected to the left side surface of the connection box.

[0010] Further, a sliding rod is fixedly installed on the inner wall of the connection box. The sliding rod is slidably connected inside the scraper.

[0011] Further, a sealing door is movably hinged to the back surface of the collection box. A pull rod is fixedly installed on the back surface of the sealing door.

[0012] Furthermore, a lock block is fixedly installed on the left side surface of the sealing door, a lock frame is fixedly installed on the left side surface of the collection box, and the lock block is clamped inside the lock frame.

[0013] Compared with the prior art, the positive and negative pressure switching device for the operating room has the following beneficial effects: By providing the operating room body, the connection box and the electrostatic precipitator, the present utility model uses the electrostatic precipitator to remove dust from the gas entering the operating room body, thereby minimizing the adhesion of large particle dust on the filtering device, and further ensuring the smoothness of the filtering device. By providing the ball screw, the rotating motor, the scraper, the fixed box, the conveying pipe, the collection box and the first fan, the power provided by the rotating motor is used in cooperation with the ball screw to drive the scraper to move, thereby scraping the dust adhered to the electrostatic precipitator into the fixed box, and then sucking it into the collection box under the power provided by the first fan, thus achieving the purpose of collecting dust, and further facilitating the subsequent adsorption of dust. By providing the dust-proof net, the function of blocking dust is realized, thereby minimizing the floating of dust from the collection box, and further facilitating the medical staff to clean the dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional structural schematic diagram of the operating room body of the present utility model;

[0015] Figure 2 is a three-dimensional structural schematic diagram of the rear view cross-section of the collection box of the present utility model;

[0016] Figure 3 is a three-dimensional structural schematic diagram of the cross-section of the connection box of the present utility model;

[0017] Figure 4 is a three-dimensional structural schematic diagram of the cross-section of the purification box of the present utility model.

[0018] In the figure: 1. Operating room body; 2. Anti-blocking mechanism; 201. Connection box; 202. Electrostatic precipitator; 203. Ball screw; 204. Rotating motor; 205. Scraper; 206. Fixed box; 207. Conveying pipe; 208. Collection box; 209. First fan; 210. Dust-proof net; 211. Purification box; 212. Second fan; 213. Filter screen frame; 214. Activated carbon adsorption plate; 215. Ultraviolet sterilization lamp; 216. Connecting pipe; 217. Total return air duct; 218. Negative pressure return air duct; 219. Negative pressure exhaust duct; 220. Positive pressure exhaust duct; 221. Filter; 222. Electromagnetic valve; 223. Exhaust pump; 224. Support platform; 225. Slide bar; 226. Sealing door; 227. Pull rod; 228. Lock block; 229. Lock frame. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The principles and features of the present utility model will be described below in conjunction with the accompanying drawings. The examples given are only used to explain the present utility model and are not intended to limit the scope of the present utility model.

[0020] This embodiment provides a positive and negative pressure switching device for an operating room. By providing an operating room body 1 and an anti-blocking mechanism 2, the device achieves the purpose of minimizing the blockage of the filtering device by large particle dust.

[0021] Please refer to Figure 1 and Figure 4 , a positive and negative pressure switching device for an operating room, including an operating room body 1. An anti-blocking mechanism 2 is fixedly installed on the upper surface of the operating room body 1. The anti-blocking mechanism 2 includes a connection box 201. An air inlet pipe is fixedly connected to the right side surface of the connection box 201, and a valve body is provided on the air inlet pipe to facilitate filling the inside of the connection box 201 with air. A purification box 211 and a second fan 212 are respectively fixedly installed on the upper surface of the operating room body 1. The input end of the power of the second fan 212 penetrates through the connection box 201 and extends into the inside of the connection box 201. The output end of the power of the second fan 212 penetrates through the purification box 211 and extends into the inside of the purification box 211. A filter screen frame 213 and an activated carbon adsorption plate 214 are respectively clamped inside the purification box 211. An ultraviolet sterilization lamp 215 is fixedly installed on the inner wall of the purification box 211. A connection pipe 216 is fixedly connected to the left side surface of the purification box 211. The bottom end of the connection pipe 216 penetrates through the operating room body 1 and extends into the inside of the operating room body 1. The air processed inside the connection box 201 is extracted into the inside of the purification box 211 by the power provided by the second fan 212, then filtered by the filter screen frame 213, purified and adsorbed by the activated carbon adsorption plate 214, and finally sterilized by the ultraviolet sterilization lamp 215 and then delivered into the inside of the operating room body 1, thus ensuring the cleanliness of the conveyed gas.

[0022] Please refer to Figures 1-4, an electrostatic precipitator 202 is fixedly installed on the inner wall of the connection box 201. The outer surface of the operating room body 1 is fixedly communicated with a main return air duct 217, a negative pressure return air duct 218, a negative pressure exhaust duct 219 and a positive pressure exhaust duct 220 respectively. One end of the main return air duct 217 far away from the operating room body 1 penetrates through the connection box 201 and extends into the interior of the connection box 201. The bottom end of the negative pressure return air duct 218 penetrates through the main return air duct 217 and extends into the interior of the main return air duct 217. Filters 221 are fixedly installed inside the main return air duct 217, the negative pressure return air duct 218, the negative pressure exhaust duct 219 and the positive pressure exhaust duct 220. Solenoid valves 222 are fixedly installed on the outer surfaces of the main return air duct 217, the negative pressure return air duct 218, the negative pressure exhaust duct 219 and the positive pressure exhaust duct 220. Exhaust pumps 223 are fixedly installed at the bottom ends of the negative pressure exhaust duct 219 and the positive pressure exhaust duct 220. The two exhaust pumps 223 are respectively the negative pressure exhaust pump 223 and the positive pressure exhaust pump 223. When the positive pressure mode is selected, the solenoid valves 222 on the positive pressure exhaust duct 220 and the main return air duct 217 are opened, and the solenoid valves 222 on the negative pressure exhaust duct 219 and the negative pressure return air duct 218 are closed. Similarly, when the negative pressure mode is selected, the solenoid valves 222 on the negative pressure exhaust duct 219 and the negative pressure return air duct 218 are opened, and the solenoid valves 222 on the positive pressure exhaust duct 220 and the main return air duct 217 are closed, thus facilitating medical staff to select any mode.

[0023] Please refer to Figure 2 and Figure 3 , a ball screw 203 is rotatably connected inside the connection box 201. A rotating motor 204 is arranged on the left side of the connection box 201. The left end of the ball screw 203 penetrates through the connection box 201 and is fixedly connected to the output end of the power of the rotating motor 204. A support platform 224 is fixedly installed on the bottom surface of the rotating motor 204. The right side surface of the support platform 224 is fixedly connected to the left side surface of the connection box 201. The installation of the support platform 224 plays a role in fixing the rotating motor 204, thus minimizing the phenomenon that the rotating motor 204 rotates during operation, and further ensuring the stability of the rotation of the rotating motor 204.

[0024] Please refer to Figure 3 , a scraper 205 is threadedly connected to the outer surface of the ball screw 203. A slide bar 225 is fixedly installed on the inner wall of the connection box 201. The slide bar 225 is slidably connected inside the scraper 205. The installation of the slide bar 225 plays a role in restricting the movement trajectory of the scraper 205, thus minimizing the phenomenon that the scraper 205 rotates during movement, and further ensuring the stability of the movement of the scraper 205.

[0025] Please refer to Figure 2 and Figure 3A fixed box 206 is fixedly installed on the inner bottom wall of the connecting box 201, the left side of the fixed box 206 is in contact with the right side of the electrostatic precipitator 202, and the right side of the fixed box 206 is fixedly connected with a conveying pipe 207. A collecting box 208 is fixedly installed on the upper surface of the operating room body 1, and the end of the conveying pipe 207 away from the fixed box 206 passes through the connecting box 201 and extends to the interior of the collecting box 208. A sealing door 226 is movably hinged on the back of the collecting box 208, and a pull rod 227 is fixedly installed on the back of the sealing door 226. The installation of the sealing door 226 and the pull rod 227 makes it convenient for medical staff to open the collecting box 208, thereby facilitating the cleaning of the dust inside the collecting box 208.

[0026] Please refer to Figure 1 and Figure 3 A first fan 209 is fixedly installed on the upper surface of the collecting box 208, and the input end of the power of the first fan 209 passes through the collecting box 208 and extends to the interior of the collecting box 208. A dustproof net 210 is fixedly installed on the inner top wall of the collecting box 208. A locking block 228 is fixedly installed on the left side of the sealing door 226. A locking frame 229 is fixedly installed on the left side of the collecting box 208. The locking block 228 is clamped in the interior of the locking frame 229. The installation of the locking block 228 and the locking frame 229 locks the sealing door 226, thereby avoiding the sealing door 226 from opening by itself as much as possible, thereby ensuring the stability of the sealing door 226.

[0027] Working principle: When in use, medical staff select the positive pressure or negative pressure mode according to requirements, and turn on the electrostatic precipitator 202, the second fan 212, the ultraviolet sterilization lamp 215, the filter 221 and the exhaust pump 223. The power provided by the second fan 212 makes the inside of the connection box 201 in a negative pressure state, so as to suck the outside air into the inside of the connection box 201. Then, the dust in the air is adsorbed inside the electrostatic precipitator 202 by the electrostatic precipitator 202. After that, the air after removing the dust enters the inside of the purification box 211, and then passes through the filtration of the filter rack 213 and the purification and adsorption of the activated carbon adsorption plate 214 in sequence. Finally, after being sterilized by the ultraviolet sterilization lamp 215, it is transported into the inside of the operating room body 1. When the positive pressure mode is selected, the solenoid valves 222 on the positive pressure exhaust duct 220 and the total return air duct 217 are opened, and the solenoid valves 222 on the negative pressure exhaust duct 219 and the negative pressure return air duct 218 are closed. Part of the gas enters the inside of the connection box 201 through the total return air duct 217, so as to carry out the purification cycle again. Another part is discharged to the outside inside the positive pressure exhaust duct 220 under the action of the exhaust pump 223. Similarly, when the negative pressure mode is turned on, the solenoid valves 222 on the negative pressure exhaust duct 219 and the negative pressure return air duct 218 are opened, and the solenoid valves 222 on the positive pressure exhaust duct 220 and the total return air duct 217 are closed. Part of it enters the inside of the total return air duct 217 through the negative pressure return air duct 218, and then the purification treatment is carried out again. Another part is discharged to the outside after passing through the negative pressure exhaust duct 219, so as to realize the switching of different modes. When the air circulation stops, the power provided by the rotating motor 204 drives the ball screw 203 to rotate, so that the ball screw 203 drives the scraper 205 to scrape the dust on the electrostatic precipitator 202. At the same time, under the action of the first fan 209, the scraped dust is collected into the inside of the collection box 208 through the fixed box 206 and the conveying pipe 207, so as to facilitate the subsequent adsorption treatment of the electrostatic precipitator 202 for dust.

[0028] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An operating room positive and negative pressure switching device, comprising an operating room body (1), characterized in that: An anti-blocking mechanism (2) is fixedly mounted on the upper surface of the operating room body (1), and the anti-blocking mechanism (2) comprises a connection box (201), an electrostatic precipitator (202) is fixedly mounted on the inner wall of the connection box (201), a ball screw (203) is rotatably connected inside the connection box (201), a rotating motor (204) is arranged on the left side of the connection box (201), the left end of the ball screw (203) passes through the connection box (201) and is fixedly connected to the output end of the power of the rotating motor (204), a scraper (205) is threadedly connected to the outer surface of the ball screw (203), a fixing box (206) is fixedly mounted on the inner bottom wall of the connection box (201), and the The left side surface of the fixed box (206) contacts the right side surface of the electrostatic precipitator (202); the right side surface of the fixed box (206) is fixedly connected to a conveying pipe (207); a collecting box (208) is fixedly installed on the upper surface of the operating room body (1); one end of the conveying pipe (207) away from the fixed box (206) passes through the connecting box (201) and extends to the interior of the collecting box (208); a first fan (209) is fixedly installed on the upper surface of the collecting box (208); an input end of the power of the first fan (209) passes through the collecting box (208) and extends to the interior of the collecting box (208); and a dustproof net (210) is fixedly installed on the inner top wall of the collecting box (208).

2. The positive and negative pressure switching device for an operating room according to claim 1, characterized in that: A purification box (211) and a second fan (212) are fixedly mounted on the upper surface of the operating room body (1), the power input end of the second fan (212) passes through the connection box (201) and extends to the interior of the connection box (201), the power output end of the second fan (212) passes through the purification box (211) and extends to the interior of the purification box (211), a filter frame (213) and an activated carbon adsorption plate (214) are respectively clamped inside the purification box (211), an ultraviolet sterilization lamp (215) is fixedly mounted on the inner wall of the purification box (211), and a connecting pipe (216) is fixedly connected to the left side of the purification box (211), the bottom end of the connecting pipe (216) passes through the operating room body (1) and extends to the interior of the operating room body (1).

3. The positive and negative pressure switching device for an operating room according to claim 1, characterized in that: The outer surface of the operating room body (1) is respectively fixedly connected with a main return air duct (217), a negative pressure return air duct (218), a negative pressure exhaust air duct (219) and a positive pressure exhaust air duct (220); the main return air duct (217) at one end away from the operating room body (1) passes through the connection box (201) and extends to the interior of the connection box (201); the bottom end of the negative pressure return air duct (218) passes through the main return air duct (217) and extends to the interior of the main return air duct (217); A filter (221) is fixedly installed inside the air duct (217), the negative pressure return air duct (218), the negative pressure exhaust air duct (219) and the positive pressure exhaust air duct (220); a solenoid valve (222) is fixedly installed on the outer surface of the total return air duct (217), the negative pressure return air duct (218), the negative pressure exhaust air duct (219) and the positive pressure exhaust air duct (220); and an exhaust pump (223) is fixedly installed at the bottom end of the negative pressure exhaust air duct (219) and the positive pressure exhaust air duct (220).

4. The positive and negative pressure switching device for an operating room according to claim 1, characterized in that: A support platform (224) is fixedly mounted on the bottom surface of the rotating motor (204), and the right side surface of the support platform (224) is fixedly connected to the left side surface of the connection box (201).

5. The positive and negative pressure switching device for an operating room according to claim 1, characterized in that: A sliding rod (225) is fixedly mounted on the inner wall of the connection box (201), and the sliding rod (225) is slidably connected to the inside of the scraper (205).

6. The positive and negative pressure switching device for an operating room according to claim 1, characterized in that: A sealing door (226) is movably hinged on the back of the collection box (208), and a pull rod (227) is fixedly installed on the back of the sealing door (226).

7. The positive and negative pressure switching device for an operating room according to claim 6, characterized in that: A locking block (228) is fixedly mounted on the left side of the sealing door (226), a locking frame (229) is fixedly mounted on the left side of the collection box (208), and the locking block (228) is clamped inside the locking frame (229).

Images