CN-112451868-B - Positive pressure isolation hood

CN112451868BCN 112451868 BCN112451868 BCN 112451868BCN-112451868-B

Abstract

The invention discloses a positive pressure isolation hood which comprises a hood body, a support ring, an air conveying pipe and a fan, wherein a transparent window is arranged at the front part of the hood body, the support ring is arranged in the hood body and used for supporting the hood body so that the hood body can be fixed on the head of a user through the support ring, the support ring is hollow, a plurality of air outlet holes communicated with the inner part of the support ring are circumferentially formed in the support ring, an air inlet port communicated with the inner part of the support ring is formed in the rear part of the support ring, the air inlet port is in butt joint with one side pipe end of the air conveying pipe through a joint, the other side pipe end of the air conveying pipe is in butt joint with an air outlet of the fan, a filtering tank used for filtering air is arranged at an air inlet of the fan, and an electric plate used for providing electric quantity for the fan is arranged outside the fan. The invention has the advantages of simple structure, relatively low price and low use cost.

Inventors

ZHOU JIANPING

Assignees

江苏日新医疗设备股份有限公司
江苏日新医疗设备股份有限公司

Dates

Publication Date: 20260421
Application Date: 20201218
Priority Date: 20201218

Claims (2)

1. The positive pressure isolation hood is characterized by comprising a hood, a support ring, an air conveying pipe and a fan, wherein a transparent window is arranged at the front part of the hood, the support ring is arranged inside the hood and used for supporting the hood so that the hood can be fixed on the head of a user through the support ring, the support ring is hollow, a plurality of air outlet holes communicated with the inside of the support ring are circumferentially formed in the support ring, an air inlet port communicated with the inside of the support ring is formed in the rear part of the support ring, the air inlet port is in butt joint with one side pipe end of the air conveying pipe through a joint, the other side pipe end of the air conveying pipe is in butt joint with an air outlet of the fan, a filtering tank used for filtering air is arranged at an air inlet of the fan, and an electric plate used for providing electric quantity for the fan is arranged outside the fan; The connector comprises a connector body, wherein an air passage penetrating the connector body up and down is arranged in the connector body, a circle of annular clamping groove for inserting the pipe end of an air conveying pipe is arranged at the lower end of the connector body around the air passage, a connecting pipe is arranged at the upper end of the connector body, the lower pipe end of the connecting pipe is inserted downwards and fixed in the air passage of the connector body, a positioning skirt edge is arranged at the upper pipe end of the connecting pipe, a positioning head protruding out of the end face of the pipe opening and capable of being inserted into an air inlet port of a supporting ring in a butt joint mode is arranged at the upper end face of the positioning skirt edge of the pipe opening, two guide holes penetrating through the positioning head and the positioning skirt edge are formed in the positioning head, two guide holes are distributed in two sides of the pipe opening, a stop block facing downwards to the pipe opening of the connecting pipe is arranged at the pipe opening of the connecting pipe, two guide strips are vertically arranged at the two ends of the bottom of the stop block respectively, the two guide strips are inserted into the two guide holes respectively correspondingly and extend downwards from the corresponding guide holes to the outside of the connecting pipe, the stop block, the two guide strips and the positioning head together form an air outlet, an outer wall is arranged on the outer wall of the two guide strips, the outer wall of the two guide strips is in a mode, the outer guide strips are arranged between the outer guide strips and the two guide strips are in a rotary mode, and the outer guide strips are arranged between the outer two guide strips and the outer guide strips and the outer guide strip and the outer strip are in a rotary mode, and the outer guide sleeve and the two guide strip and the guide sleeve and the two guide strip and the guide device.
2. A positive pressure insulation hood according to claim 1 wherein a shoulder shield is attached to the lower portion of the hood.

Description

Positive pressure isolation hood Technical Field The invention relates to the technical field of personal protection products, in particular to a positive pressure isolation hood. Background When working in areas where potentially dangerous or unhealthy dust, smoke, gas, germs or other contaminants are known to be present or likely to be present, the operator is required to wear a positive pressure respirator which, in use, enables the pressure of the entire respiratory system to be slightly higher than the ambient gas pressure at all times, prevents toxic and harmful gases or germs of the ambient environment from entering the respiratory system of the user, and can avoid causing infections of medical personnel. The positive pressure respirator has the defects of complex structure, high price and high use cost in the use process. Disclosure of Invention The invention aims to provide a positive pressure isolation hood which is simple in structure, relatively low in price and low in use cost. The positive pressure isolation hood comprises a hood body, a support ring, an air conveying pipe and a fan, wherein a transparent window is arranged at the front part of the hood body, the support ring is arranged in the hood body and used for supporting the hood body so that the hood body can be fixed on the head of a user through the support ring, the support ring is hollow, a plurality of air outlet holes communicated with the inside of the support ring are formed in the support ring along the circumferential direction, an air inlet port communicated with the inside of the support ring is formed in the rear part of the support ring, the air inlet port is in butt joint with one side pipe end of the air conveying pipe through a connector, the other side pipe end of the air conveying pipe is in butt joint with an air outlet of the fan, a filter tank used for filtering air is arranged at an air inlet of the fan, and an electric plate used for providing electric quantity for the fan is arranged at the outer part of the fan. The positive pressure isolation hood comprises a joint body, wherein an air passage penetrating the joint body up and down is formed in the joint body, a circle of annular clamping grooves for inserting the pipe ends of air conveying pipes are formed at the lower end of the joint body around the air passage, connecting pipes are arranged at the upper end of the joint body, the lower pipe ends of the connecting pipes are downwards inserted into and fixed in the air passage of the joint body, a positioning skirt edge is arranged at the upper pipe ends of the connecting pipes, positioning heads protruding out of the end face of the pipe opening of the connecting pipes and capable of being abutted to an air inlet port of a supporting ring are arranged at the upper end face of the positioning skirt edge of the pipe opening, two guide holes penetrating the positioning heads and the positioning skirt edge are formed in the positioning heads, the two guide holes are distributed on two sides of the pipe opening of the connecting pipes, a stop block facing downwards the pipe opening is arranged at the pipe opening of the connecting pipe, one guide bar is vertically arranged at the two ends of the bottom of the stop block respectively, the two guide bars are correspondingly inserted into the two guide holes respectively and downwards extend out of the air passage of the connecting pipe body from the corresponding guide holes to the outside, the stop block, the two guide bars and the positioning skirt edge and the positioning head are jointly arranged along the pipe opening edge, two guide bars are arranged on the pipe opening edges of the connecting pipe opening edge and can be abutted to the two guide bars and rotatably arranged between the two guide bars and the two guide bars or the two guide bars are rotatably arranged along the two guide bars and the outer guide sleeve and the outer sleeve. Further, a positive pressure isolation hood is described wherein a shoulder shield is attached to the lower portion of the hood. Through implementation of the technical scheme, the invention has the beneficial effects of simple structure, relatively low price and low use cost. Drawings FIG. 1 is a schematic view of a positive pressure insulation hood according to the present invention. Fig. 2 is a schematic view of the structure in the left view direction of fig. 1. Fig. 3 is a schematic view of the structure of the support ring shown in fig. 1. Fig. 4 is a schematic view of the structure of fig. 3 in the bottom view. Fig. 5 is a schematic view of the structure of the joint shown in fig. 1. Fig. 6 is a schematic view of the stopper shown in fig. 5. Fig. 7 is a schematic structural view of the joint body shown in fig. 5. Fig. 8 is a schematic structural view of the blower shown in fig. 1. FIG. 9 is a schematic view showing a state of use of the positive pressure isolation hood according to the present invention when the ho