阅读说明：本技术 一种医疗废物高温蒸汽灭菌箱 (Medical waste high-temperature steam sterilization box ) 是由 陈燕 肖诚斌 张凯 张天琦 邵哲如 章鹏飞 李敏 吴明 李小乐 杨凯 于 2019-08-14 设计创作，主要内容包括：本发明提供一种医疗废物高温蒸汽灭菌箱,包括：箱体；设置于所述箱体底部的蒸汽喷射管,所述蒸汽喷射管顶端设有喷口,并且,所述蒸汽喷射管为可伸缩结构：以及第一温度传感器,所述第一温度传感器设置于所述蒸汽喷射管顶端,并与所述蒸汽喷射管联锁,当所述第一温度传感器感应到其所在区域的温度低于预设值时,则所述蒸汽喷射管于该区域开启蒸汽喷射,当所述第一温度传感器感应到其所在区域的温度在所述预设值以上时,则所述蒸汽喷射管于该区域停止蒸汽喷射,并伸缩至下一区域。本发明提出的医疗废物高温蒸汽灭菌箱能够使高温蒸汽无死角第到达灭菌箱内的每一个位置,使灭菌箱内温度均一,灭菌更加彻底。(The invention provides a medical waste high-temperature steam sterilization box, which comprises: a box body; set up in bottom half's steam injection pipe, the steam injection pipe top is equipped with the spout, and, steam injection pipe is extending structure: and the first temperature sensor is arranged at the top end of the steam injection pipe and is interlocked with the steam injection pipe, when the first temperature sensor senses that the temperature of the area where the first temperature sensor is located is lower than a preset value, the steam injection pipe starts steam injection in the area, and when the first temperature sensor senses that the temperature of the area where the first temperature sensor is located is higher than the preset value, the steam injection pipe stops steam injection in the area and stretches to the next area. The medical waste high-temperature steam sterilization box provided by the invention can enable high-temperature steam to reach every position in the sterilization box without dead angles, so that the temperature in the sterilization box is uniform, and the sterilization is more thorough.)

1. A medical waste high-temperature steam sterilization tank, characterized by comprising:

a box body;

set up in bottom half's steam injection pipe, the steam injection pipe top is equipped with the spout, and, steam injection pipe is extending structure: and

the first temperature sensor is arranged at the top end of the steam injection pipe and is interlocked with the steam injection pipe, when the first temperature sensor senses that the temperature of the area where the first temperature sensor is located is lower than a preset value, the steam injection pipe starts steam injection in the area, and when the first temperature sensor senses that the temperature of the area where the first temperature sensor is located is higher than the preset value, the steam injection pipe stops steam injection in the area and stretches to the next area.

2. The medical waste high-temperature steam sterilization box according to claim 1, wherein the steam injection pipe comprises a first telescopic joint, a second telescopic joint and a third telescopic joint which are nested from outside to inside in sequence.

3. The medical waste high-temperature steam sterilization box according to claim 1, wherein the bottom of the box body is rectangular, and one steam injection pipe is arranged at each of four corners of the rectangle.

4. The medical waste high-temperature steam sterilization chamber as claimed in claim 1, wherein the steam injection pipes are configured to be sequentially spread from short to long.

5. The medical waste high-temperature steam sterilization chamber as claimed in claim 1, wherein the preset value is 134 ℃.

6. The medical waste high-temperature steam sterilization box according to claim 1, wherein a second temperature sensor is arranged at the top of the box body, and the second temperature sensor is interlocked with the steam injection pipe.

7. The medical waste autoclaving chamber of claim 6 wherein the steam injection tubes stop injecting steam when the second temperature sensor senses that the temperature at the top of the chamber is above a maximum threshold.

8. The medical waste autoclave sterilization chamber of claim 7, wherein the maximum threshold is 138 ℃.

9. The medical waste high-temperature steam sterilization chamber as claimed in claim 1, wherein the chamber body is made of 316L stainless steel.

10. The medical waste high temperature steam sterilization chamber of claim 1, wherein the steam injection tube is made of steel bonded cemented carbide.

Technical Field

The invention relates to the technical field of waste treatment, in particular to a medical waste high-temperature steam sterilization box.

Background

Medical waste has obvious characteristics of infectivity, toxicity, chemistry and the like, and can cause serious harm to human health and ecological environment. In the treatment of medical waste in China at present, the scale of non-incineration treatment accounts for 50%, and high-temperature steam treatment is mainly used.

According to technical specification of medical waste high-temperature steam centralized treatment engineering (HJT 276-2006), the sterilization time of medical waste in a sterilization chamber at a sterilization temperature of 134 ℃ is not less than 45 minutes, however, the actual temperature field in the conventional domestic medical waste high-temperature steam treatment sterilization chamber is a gradient field with nonuniform temperature distribution, when the temperature of a temperature measuring point of a sensor in the sterilization chamber is 134 ℃, the temperature of some spatial positions (such as the bottom and four corner regions) is probably lower than 134 ℃, and the temperature of some positions (such as the top of the sterilization chamber) is probably higher than 140 ℃, so that the temperature in the sterilization chamber in the conventional medical waste high-temperature steam treatment technology is difficult to be uniform. Either too low or too high a temperature is detrimental to the effective treatment of medical waste.

Therefore, it is necessary to provide a new anaerobic reactor to solve the above problems.

Disclosure of Invention

In this summary, concepts in a simplified form are introduced that are further described in the detailed description. This summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

In view of the defects of the prior art, the invention provides a medical waste high-temperature steam sterilization box, which comprises:

a box body;

set up in bottom half's steam injection pipe, the steam injection pipe top is equipped with the spout, and, steam injection pipe is extending structure: and

the first temperature sensor is arranged at the top end of the steam injection pipe and is interlocked with the steam injection pipe, when the first temperature sensor senses that the temperature of the area where the first temperature sensor is located is lower than a preset value, the steam injection pipe starts steam injection in the area, and when the first temperature sensor senses that the temperature of the area where the first temperature sensor is located is higher than the preset value, the steam injection pipe stops steam injection in the area and stretches to the next area.

In one embodiment, the steam injection pipe comprises a first telescopic joint, a second telescopic joint and a third telescopic joint which are nested from outside to inside in sequence.

In one embodiment, the bottom of the box body is rectangular, and the four corners of the rectangle are respectively provided with one steam injection pipe.

In one embodiment, the steam injection pipes are configured to be sequentially spread from short to long.

In one embodiment, the preset value is 134 ℃.

In one embodiment, a second temperature sensor is provided at the top of the box body, and the second temperature sensor is interlocked with the steam injection pipe.

In one embodiment, the steam injection pipe stops injecting the steam when the second temperature sensor senses that the temperature at the top of the cabinet is higher than a maximum threshold value.

In one embodiment, the maximum threshold is 138 ℃.

In one embodiment, the tank is made of 316L stainless steel.

In one embodiment, the steam injection pipe is made of steel bonded cemented carbide.

The medical waste high-temperature steam sterilization box provided by the invention can enable high-temperature steam to reach each position in the sterilization box without dead angles, so that the temperature in the sterilization box is uniform, the sterilization is more thorough, and the steam jet pipes can be controlled in a segmented manner, so that the medical waste high-temperature steam sterilization box has adaptability to medical wastes of different depths.

Drawings

The following drawings of the invention are included to provide a further understanding of the invention. There are shown in the drawings, embodiments and descriptions thereof, which are used to explain the principles and apparatus of the invention. In the drawings, there is shown in the drawings,

FIG. 1 is a schematic view of a medical waste autoclave in an embodiment of the present invention, with the steam injection pipes at a minimum length;

fig. 2 is a schematic structural view of a high-temperature steam sterilization chamber for medical waste according to an embodiment of the present invention, when a steam injection pipe is at the maximum length.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.

In order to thoroughly understand the present invention, detailed steps will be set forth in the following description in order to explain the anaerobic reactor proposed by the present invention. It is apparent that the invention may be practiced without limitation to the specific details known to those skilled in the art. The following detailed description of the preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to those detailed.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

The sterilization temperature in the existing medical waste sterilization box is difficult to reach uniformity, and steam is difficult to enter the bottom and four corners of the sterilization box, so that a temperature dead zone is formed, the upper layer temperature of the sterilization box can exceed 138 ℃, and the following consequences can be caused: (1) the area below 134 ℃ can not achieve the complete sterilization effect; (2) the operation experience of relevant treatment units at home and abroad shows that if the temperature of the sterilization chamber is higher than 138 ℃, the packaging bag is excessively shrunk, and percolate and gas in the packaging bag are difficult to remove, so that the sterilization effect is seriously influenced; (3) the medical waste is mainly made of plastic components (PVC), and related data show that when the temperature is higher than 100 ℃, PVC begins to decompose a small amount of HCl gas, when the temperature is higher than 140 ℃, the speed of the PVC for decomposing the HCl gas is accelerated, and the decomposed HCl can automatically catalyze the decomposition of the PVC to promote the decomposition of the PVC, so that the sterilization temperature in a sterilization chamber is not higher than 140 ℃ to avoid generating a large amount of HCL gas. In summary, the sterilization temperature of the sterilization chamber should not exceed 138 ℃ at most.

Based on the above, the embodiment of the invention provides a medical waste high-temperature steam sterilization box, which adopts a telescopic multi-section type steam injection pipe, so that high-temperature steam can reach each position in the sterilization box firstly without dead angles, and the steam injection pipe is interlocked with a temperature sensor, so that the uniform temperature in the sterilization box is ensured, the sterilization is more thorough, wherein the steam injection pipe can be controlled in a sectional manner, and the medical waste high-temperature steam sterilization box has adaptability to medical wastes of different depths.

In order to provide a thorough understanding of the present invention, a detailed structure will be set forth in the following description in order to explain the present invention. The following detailed description of the preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to those detailed.

The anaerobic reactor of the present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 and 2, the medical waste high-temperature steam sterilization box according to one embodiment of the present invention includes a box body 101, a steam injection pipe 102, and a first temperature sensor 103; wherein, the steam injection pipe 102 is arranged at the bottom of the box 101, and the steam injection pipe 102 is a retractable structure: the first temperature sensor is arranged at the top end of the steam injection pipe and is interlocked with the steam injection pipe, when the first temperature sensor senses that the temperature of a specific area is lower than a minimum threshold value, the steam injection pipe starts steam injection in the area, and when the first temperature sensor senses that the temperature of the specific area is higher than a maximum threshold value, the steam injection pipe stops steam injection in the area.

In one embodiment, the bottom surface of the box 101 is rectangular, and the four corners of the rectangular bottom surface are respectively provided with one steam injection pipe 102, so that steam can more easily enter the four corner regions in the box, and the four corner regions are prevented from forming a temperature four region. However, it is understood that the shape of the bottom surface of the case 101 is not limited to a rectangle, and it may be a triangle, a pentagon, a circle, or the like; also, the number of the steam injection pipes 102 is not limited to four, and the positions thereof are not limited to the four corners of the rectangle. For example, when the bottom surface of the cabinet 101 is circular, the steam injection pipes 102 may be uniformly distributed around the center of the circle.

The steam injection pipe 102 is of a telescopic structure, a nozzle of the steam injection pipe is arranged on the upper portion, the bottom of the steam injection pipe is connected with a steam generator outside the box body 101, and high-temperature steam generated by the steam generator is injected into the box body 101, so that medical waste inside the box body 101 can be sterilized. The steam injection pipe 102 of the telescopic structure can inject steam at various heights, so that the temperature in the box body is more uniform.

In one embodiment, the steam injection pipe 102 comprises a first telescopic joint, a second telescopic joint and a third telescopic joint which are nested from outside to inside in sequence. That is, the steam injection pipe 102 can achieve three lengths by being telescopic. In another embodiment, the steam injection line 102 may include two telescoping sections. In other embodiments, the steam injection pipe 102 may also include more than three expansion joints, thereby allowing expansion and contraction at more lengths.

The top end of the steam injection pipe 102 is provided with a first temperature sensor 103, and the first temperature sensor 103 is interlocked with the steam injection pipe 102. Specifically, when the first temperature sensor 103 senses that the temperature of the specific area is lower than a preset value, the steam injection pipe 102 starts steam injection in the specific area, and when the first temperature sensor 103 senses that the temperature of the specific area reaches the preset value, the steam injection pipe 102 stops steam injection in the specific area and extends and retracts to the next area. Taking the steam injection pipe 102 composed of three expansion joints in the present embodiment as an example, the first temperature sensor 103 may be provided at the tip of the innermost third expansion joint.

In one embodiment, the steam injection pipes 102 are configured to expand in sequence from short to long. When the medical waste high-temperature steam sterilization box starts to operate, firstly, the second expansion joint and the third expansion joint are not unfolded, the length of the steam jet pipe 102 is equal to that of the first expansion joint, the first temperature sensor 103 senses the temperature of the lower position of the box body 101, if the sensed temperature is lower than a preset value, the steam jet pipe 102 jets steam at the position until the temperature sensed by the first temperature sensor 103 reaches the preset value, the steam jet pipe 102 stops jetting steam at the moment, the second expansion joint is unfolded, and at the moment, the length of the steam jet pipe 102 is the sum of the lengths of the first expansion joint and the second expansion joint; then, the first temperature sensor 103 senses the temperature at the higher position, if the sensed temperature is lower than a preset value, the steam jet pipe 102 jets steam at the position until the temperature sensed by the first temperature sensor 103 reaches the preset value, the steam jet pipe 102 stops jetting steam at the moment, the third expansion joint is unfolded, and the length of the steam jet pipe 102 is the sum of the lengths of the first expansion joint, the second expansion joint and the third expansion joint; then, the first temperature sensor 103 senses the temperature at the higher position, and if the temperature is lower than a preset value, the steam injection pipe 102 injects steam, and at this time, the steam is directly injected to the higher position in the cabinet 101.

Further, since 134 ℃ is a general temperature for sterilization of medical waste, the preset value of the temperature is 134 ℃, according to the embodiment of the invention, the medical waste high-temperature steam sterilization box can keep the temperature in the box body at about 134 ℃ uniformly.

In one embodiment, the top of the box 101 is provided with a second temperature sensor 104, and the second temperature sensor 104 is interlocked with the steam injection pipe 102. When the second temperature sensor senses that the temperature of the top of the box body 101 is higher than 138 ℃, steam injection is stopped, so that the packaging bag is prevented from being excessively shrunk, percolate and gas in the packaging bag are difficult to remove, and the PVC is prevented from being accelerated to decompose and generate a large amount of HCl gas due to the overhigh temperature. When the second temperature sensor 104 senses a temperature below 134 deg.c, steam injection is turned on.

In one embodiment, the tank 101 is made of a stainless steel material that is resistant to high temperatures and corrosion. The content of molybdenum (Mo) in the 316L stainless steel enables the steel to have excellent pitting corrosion resistance, and the steel can be safely applied to environments containing halogen ions such as Cl ions, so that the steel is particularly suitable to be used as a structural material of a box body of the medical waste high-temperature steam sterilization box in the embodiment.

In one embodiment, the steam injection pipe 102 is made of steel bonded cemented carbide. The steel bonded hard alloy is made of refractory metal hard compound serving as a hard phase and steel serving as a binding phase, has higher elastic modulus, wear resistance, compressive strength and bending strength, has better toughness compared with common hard alloy, and also has good self-lubricating property and lower friction coefficient, so that the steel bonded hard alloy is suitable for preparing the telescopic steam jet pipe 102 and avoids the steam jet pipe 102 from being bent under stress; it also has excellent chemical stability, and is suitable for the special working conditions of high temperature and high corrosivity in the medical waste high-temperature steam sterilization box.

In order to exhaust the steam in the box body and control the atmospheric pressure in the box body, in one embodiment, the box body is also provided with an exhaust port. The exhaust port communicates the inside and outside of the case. The exhaust port is used for exhausting redundant steam in the box body and maintaining the atmospheric pressure inside and outside the box body to be balanced.

An exemplary work flow of the medical waste high-temperature steam sterilization box of the embodiment of the invention is as follows: after the medical waste high-temperature steam sterilization box is filled with medical waste and enters a sterilization chamber, the steam jet pipe 102 firstly expands the first section, when the first temperature sensor 103 on the steam jet pipe senses that the temperature is lower than 134 ℃, the steam jet pipe 102 jets steam, the temperature sensor senses that the temperature is increased, when the temperature is increased to 134 ℃, the steam jet pipe 102 stops jetting steam, the second section is expanded, when the first temperature sensor 103 on the steam jet pipe senses that the temperature is lower than 134 ℃, the steam jet pipe jets steam again until the temperature reaches 134 ℃. Meanwhile, when the second temperature sensor 104 at the top of the sterilization box senses that the temperature at the top is higher than 138 ℃, the steam injection is stopped, and when the temperature sensed by the second temperature sensor 104 is lower than 134 ℃, the steam injection is started. Thus, the temperature in the box body is maintained to be higher than 134 ℃ and lower than 138 ℃.

The medical waste high-temperature steam sterilization box provided by the embodiment of the invention can enable high-temperature steam to reach each position in the sterilization box without dead angles, so that the temperature in the sterilization box is uniform, the sterilization is more thorough, and the steam jet pipes can be controlled in a sectional manner, so that the medical waste high-temperature steam sterilization box has adaptability to medical wastes of different depths.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Terms such as "disposed" and the like, as used herein, may refer to one element being directly attached to another element or one element being attached to another element through intervening elements. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.

The present invention has been illustrated by the above embodiments, but it should be understood that the above embodiments are for illustrative and descriptive purposes only and are not intended to limit the invention to the scope of the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many variations and modifications may be made in accordance with the teachings of the present invention, which variations and modifications are within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.