CN111281989A

CN111281989A - Vertical pressure steam sterilizer with safety exhaust function

Info

Publication number: CN111281989A
Application number: CN202010246899.0A
Authority: CN
Inventors: 刘发柱; 刘强; 杨治洲
Original assignee: Bingshan Songyang Biotechnology Dalian Co ltd
Current assignee: Bingshan Songyang Biotechnology Dalian Co ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-06-16

Abstract

The invention discloses a vertical pressure steam sterilizer with a safe exhaust function, relates to the technical field of pressure steam sterilizers, and particularly relates to a vertical pressure steam sterilizer with a safe exhaust function and a steam self-generation function. The steam generator is arranged at the bottom in the sterilization cavity; the lower output port of the sterilization cavity is respectively communicated with the electromagnetic valve A and the electromagnetic valve B through a pipeline and a tee joint A; the electromagnetic valve A and the electromagnetic valve B are connected with the input end of the filter cavity through a pipeline and a tee joint B; a filter element is arranged in the filter cavity; the filter element is a PP shell filter element; the output end of the filter cavity is sequentially connected with the electromagnetic valve C, the condenser B and the cooling box through pipelines; the cooling box is connected with the rear cooling barrel through a pipeline; a condenser A is arranged on a pipeline between the electromagnetic valve A and the tee joint B; the bottom of the sterilizing cavity is provided with a water outlet. The technical scheme of the invention solves the problems that the equipment maintenance cost is increased and the liquid sterilization cannot be carried out in the prior art; the gas filtering device is not provided, and the safe gas discharge function and the like can not be realized.

Description

Vertical pressure steam sterilizer with safety exhaust function

Technical Field

The invention discloses a vertical pressure steam sterilizer with a safe exhaust function, relates to the technical field of pressure steam sterilizers, and particularly relates to a vertical pressure steam sterilizer with a safe exhaust function and a steam self-generation function.

Background

The exhaust safety standard requirements of the sterilizer are as follows:

1. the sterilizer is provided with an external exhaust treatment device, and the external exhaust is sterile.

2. If the discharged gas is sterilized by using a high-efficiency filter, the filter meets the following requirements:

2.1, the filtering effect of filtering particles with the diameter of 0.2 μm is not more than 99.99%;

2.2, the filter is made of corrosion-resistant and biodegradation-resistant materials, and the structure of the filter is required to protect the filter material to the maximum extent;

2.3, the high-temperature steam with the temperature not lower than 140 ℃ can be borne, and meanwhile, the pressure not higher than 360kPA can be borne;

2.4, preventing any influence which can weaken the normal function of the medical device;

2.5, adopting a hydrophobic filter element;

2.6, the filter and the parts are easy to replace;

2.7, the on-line sterilization function is realized;

2.8, an online sterilization effect test interface is provided;

2.9, ensuring the integrity of the test card and having an integrity test interface.

Currently, exhaust safety sterilizers take the form of a pre-vacuum, i.e., adding a vacuum pump, forcing gas circulation, which increases equipment maintenance costs and is not primarily amenable to liquid sterilization.

The existing lower exhaust type steam self-generating vertical pressure steam sterilizer comprises: steam generator, sterilization chamber, solenoid valve A, condenser, cooler bin, because of no gas filter equipment in the structure, can't realize gaseous safe emission function.

In view of the above problems in the prior art, it is necessary to develop a novel vertical pressure steam sterilizer with safe exhaust function, so as to overcome the problems in the prior art.

Disclosure of Invention

The increased maintenance cost of the equipment proposed according to the above prior art, and liquid sterilization is not possible; the vertical pressure steam sterilizer can not realize the technical problems of safe gas emission function and the like without a gas filtering device, and provides a vertical pressure steam sterilizer with safe gas emission. The invention mainly utilizes the relation between ideal gas and pressure, namely high-pressure to low-pressure transmission, to guide the heat in the tank body into the sterilization cavity, thereby realizing that the F0 value in the filter cavity achieves the sterilization effect.

The technical means adopted by the invention are as follows:

a vertical pressure steam sterilizer with safe venting, comprising: the device comprises a sterilization cavity, a steam generator, an electromagnetic valve A, a condenser A and a cooling box; it is characterized in that the vertical pressure steam sterilizer with safe exhaust further comprises: the device comprises a filter cavity, a condenser B, an electromagnetic valve C, an electromagnetic valve B, a temperature protection device and a pressure protection device;

further, the steam generator is arranged at the bottom in the sterilization cavity;

further, an output port at the lower part of the sterilization cavity is respectively communicated with the electromagnetic valve A and the electromagnetic valve B through a pipeline and the tee joint A; the electromagnetic valve A and the electromagnetic valve B are connected with the input end of the filter cavity through a pipeline and a tee joint B;

furthermore, a filter element is arranged in the filter cavity; the filter element is a PP shell filter element;

furthermore, the output end of the filter cavity is sequentially connected with the electromagnetic valve C, the condenser B and the cooling box through pipelines;

further, the cooling box is connected with the rear cooling barrel through a pipeline;

further, a condenser A is arranged on a pipeline between the electromagnetic valve A and the tee joint B;

furthermore, the bottom of the sterilization cavity is provided with a water outlet.

Further, the temperature protection device: a temperature sensor D, an over-temperature protector, a temperature sensor C and a temperature sensor A;

furthermore, a temperature sensor D is arranged on the filter cavity and used for measuring the temperature change inside the filter cavity;

furthermore, an over-temperature protector and a temperature sensor C are arranged at the bottom of the sterilization cavity and are connected with the steam generator; the temperature sensor C is used for measuring the internal temperature of the steam generator; the over-temperature protector is used for performing over-temperature protection on the steam generator;

furthermore, a temperature sensor A is arranged on the side wall of the sterilization cavity and used for measuring the temperature change inside the sterilization cavity.

Further, the pressure protection device: the pressure sensor B, the pressure sensor C, the pressure sensor A, a safety valve and a pressure gauge;

furthermore, a pressure sensor B is arranged on a pipeline between the filter cavity and the electromagnetic valve C and used for measuring the pressure of the pipeline;

furthermore, a pressure sensor C is arranged on a pipeline between the tee joint B and the filter cavity and used for measuring the pressure of the section of pipeline;

further, the pressure sensor A is arranged on the lower part of the outer wall of the sterilization cavity and used for measuring the bottom pressure of the sterilization cavity;

furthermore, a pressure valve and a pressure gauge are arranged on the outer wall of the upper part of the sterilization cavity through a tee joint.

The invention has the safe exhaust function and the on-line sterilization function of the filter:

firstly, the safe exhaust function includes: 1. a cold exhaust process; 2. sterilizing; 3. cooling;

1. and (3) cold exhaust process: opening the solenoid valves A and C, closing the solenoid valve B, heating distilled water by the steam generator to generate steam, and discharging cold air in the steam generator from the lower part of the sterilizing cavity (the gas flows in the direction of the steam generator → the sterilizing cavity → the solenoid valve A → the condenser A → the filter cavity → the solenoid valve C → the condenser B → the cooling box);

2. and (3) a sterilization process: closing the electromagnetic valves A and B, continuously heating distilled water by the steam generator to generate saturated steam, so that the steam fills the sterilization cavity and reaches the F0 value required by sterilization (the F0 value is the standard sterilization time);

3. and (3) cooling: the steam generator stops heating, the solenoid valves A and C are opened, the solenoid valve B is kept closed, the sterilization cavity is saturated with steam and discharged (the gas flows in the direction of the sterilization cavity → the solenoid valve A → the condenser A → the filter cavity → the solenoid valve C → the condenser B → the cooling tank).

Secondly, the online sterilization function of the filter: 1. a cold exhaust process; 2. a filter sterilization process; 3. cooling;

2. and (3) sterilizing the filter: opening the electromagnetic valve B, closing the electromagnetic valve A, continuously heating distilled water by the steam generator to generate saturated steam, adjusting the electromagnetic valve C (repeatedly opening and closing) by the controller PMW to enable the steam in the tank body to flow, bringing heat in the sterilization cavity into the filter cavity, and enabling the temperature in the filter cavity to reach the F0 value required by sterilization; thereby realizing the online sterilization function of the filter; (gas flow direction: steam generator → sterilization chamber → electromagnetic valve B → filtration chamber → electromagnetic valve C → condenser B → cooling tank);

3. and (3) cooling: the steam generator stops heating, the solenoid valves A and C are opened, the solenoid valve B is kept closed, and the sterilization cavity is saturated with steam (gas flow: sterilization cavity → solenoid valve A → condenser A → filter cavity → solenoid valve C → condenser B → cooling tank).

Compared with the prior art, the invention has the following advantages:

1. according to the vertical pressure steam sterilizer with the functions of safe exhaust and online sterilization of the filter, the three electromagnetic valves B, C are additionally arranged, so that the online sterilization process of the filter element is realized, the reuse of the filter element is realized, and the use cost is reduced;

2. according to the vertical pressure steam sterilizer with the functions of safe exhaust and online sterilization of the filter, the temperature sensor D is additionally arranged to detect the temperature in the filter cavity and is combined with the controller, so that the online sterilization performance verification function of the filter element is realized;

3. according to the vertical pressure steam sterilizer with the functions of safe exhaust and online sterilization of the filter, the pressure difference value of the front end and the rear end of the filter element is detected by additionally arranging the two pressure sensors B and C and is combined with the controller, so that the function of failure alarm of the filter element is realized;

4. the vertical pressure steam sterilizer with the functions of safe exhaust and on-line filter sterilization, which is provided by the invention, has the advantages that the vacuum pump is removed, and the cost of the whole sterilizer and the subsequent maintenance and use is reduced;

5. the vertical pressure steam sterilizer with the functions of safe exhaust and online sterilization of the filter realizes the function of safe gas discharge by the additionally arranged filter cavity and the filter element;

6. the vertical pressure steam sterilizer with the functions of safe exhaust and online sterilization of the filter can adopt the PP shell filter element which is relatively low, is convenient to replace and reduces the maintenance and use cost.

In conclusion, the technical scheme of the invention solves the problems that the equipment maintenance cost is increased and the liquid sterilization cannot be carried out in the prior art; the gas filtering device is not provided, and the safe gas discharge function and the like can not be realized.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of the structure of the present invention.

In the figure: 1. the device comprises a cooling box 2, a temperature sensor D3, a filter element 4, a filter cavity 5, a condenser B6, an electromagnetic valve C7, a sterilization cavity 8, a pressure sensor B9, a pressure sensor C10, a tee joint B11, a condenser A12, an electromagnetic valve A13, a tee joint A14, an electromagnetic valve B15, a rear cooling barrel 16, an over-temperature protector 17, a steam generator 18, a water outlet 19, a temperature sensor C20, a pressure sensor A21, a temperature sensor A22, a safety valve 23 and a pressure gauge.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the absence of any contrary indication, these directional terms are not intended to indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be considered as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

As shown, the present invention provides a vertical pressure steam sterilizer with safe venting, comprising: the sterilization chamber 7, the steam generator 17, the electromagnetic valve A12, the condenser A11 and the cooling box 1; it is characterized in that the vertical pressure steam sterilizer with safe exhaust further comprises: the device comprises a filter chamber 4, a condenser B5, a solenoid valve C6, a solenoid valve B14, a temperature protection device and a pressure protection device; the steam generator 17 is arranged at the bottom in the sterilization cavity 7; an output port at the lower part of the sterilization cavity 7 is respectively communicated with an electromagnetic valve A12 and an electromagnetic valve B14 through a pipeline and a tee joint A13; the electromagnetic valve A12 and the electromagnetic valve B14 are connected with the input end of the filter cavity 4 through a pipeline and a tee joint B10; the filter element 3 is arranged in the filter cavity 4; the filter element 3 is a PP shell filter element; the output end of the filter cavity 4 is sequentially connected with the electromagnetic valve C6, the condenser B5 and the cooling box 1 through pipelines; the cooling box 1 is connected with the rear cooling barrel 15 through a pipeline; a condenser A11 is arranged on a pipeline between the electromagnetic valve A12 and the tee joint B10; the bottom of the sterilization chamber 7 is provided with a drain outlet 18.

Temperature protection device: a temperature sensor D2, an over-temperature protector 16, a temperature sensor C19 and a temperature sensor A21; the temperature sensor D2 is arranged on the filter cavity 4 and used for measuring the temperature change inside the filter cavity 4; the over-temperature protector 16 and the temperature sensor C19 are arranged at the bottom of the sterilization cavity 7 and are connected with the steam generator 17; the temperature sensor C19 is used to measure the temperature inside the steam generator 17; the over-temperature protector 16 is used for over-temperature protection of the steam generator 17; the temperature sensor a21 is mounted on the side wall of the sterilization chamber 7 to measure the temperature change inside the sterilization chamber 7.

The pressure protection device comprises: a pressure sensor B8, a pressure sensor C9, a pressure sensor A20, a safety valve 22 and a pressure gauge 23; the pressure sensor B8 is arranged on the pipeline between the filter chamber 4 and the electromagnetic valve C6 and is used for measuring the pressure of the pipeline; the pressure sensor C9 is arranged on a pipeline between the tee joint B10 and the filter chamber 4 and is used for measuring the pressure of the pipeline; the pressure sensor A20 is arranged on the lower part of the outer wall of the sterilization cavity 7 and is used for measuring the bottom pressure of the sterilization cavity 7; the pressure valve 22 and the pressure gauge 23 are arranged on the outer wall of the upper part of the sterilizing cavity 7 through a tee joint.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vertical pressure steam sterilizer with safe venting, comprising: a sterilization cavity (7), a steam generator (17), an electromagnetic valve A (12), a condenser A (11) and a cooling box (1); it is characterized in that the vertical pressure steam sterilizer with safe exhaust further comprises: the device comprises a filter cavity (4), a condenser B (5), an electromagnetic valve C (6), an electromagnetic valve B (14), a temperature protection device and a pressure protection device;

the steam generator (17) is arranged at the bottom in the sterilization cavity (7);

an output port at the lower part of the sterilization cavity (7) is respectively communicated with the electromagnetic valve A (12) and the electromagnetic valve B (14) through a pipeline and a tee joint A (13); the electromagnetic valve A (12) and the electromagnetic valve B (14) are connected with the input end of the filter cavity (4) through a pipeline and a tee joint B (10);

a filter element (3) is arranged in the filter cavity (4); the filter element (3) is a PP shell filter element;

the output end of the filter cavity (4) is sequentially connected with the electromagnetic valve C (6), the condenser B (5) and the cooling box (1) through pipelines;

the cooling box (1) is connected with the rear cooling barrel (15) through a pipeline;

a condenser A (11) is arranged on a pipeline between the electromagnetic valve A (12) and the tee joint B (10);

the bottom of the sterilizing cavity (7) is provided with a water outlet (18).

2. The vertical pressure steam sterilizer with safe air exhaust according to claim 1, wherein the temperature protection device: a temperature sensor D (2), an over-temperature protector (16), a temperature sensor C (19) and a temperature sensor A (21);

the temperature sensor D (2) is arranged on the filter cavity (4) and is used for measuring the temperature change in the filter cavity (4);

the over-temperature protector (16) and the temperature sensor C (19) are arranged at the bottom of the sterilization cavity (7) and are connected with the steam generator (17); a temperature sensor C (19) for measuring the temperature inside the steam generator (17); the over-temperature protector (16) is used for performing over-temperature protection on the steam generator (17);

the temperature sensor A (21) is arranged on the side wall of the sterilization cavity (7) and is used for measuring the temperature change in the sterilization cavity (7).

3. The vertical pressure steam sterilizer with safe air exhaust of claim 1, wherein the pressure protection device: a pressure sensor B (8), a pressure sensor C (9), a pressure sensor A (20), a safety valve (22) and a pressure gauge (23);

the pressure sensor B (8) is arranged on a pipeline between the filter cavity (4) and the electromagnetic valve C (6) and is used for measuring the pressure of the pipeline;

the pressure sensor C (9) is arranged on a pipeline between the tee joint B (10) and the filter cavity (4) and is used for measuring the pressure of the pipeline;

the pressure sensor A (20) is arranged on the lower part of the outer wall of the sterilization cavity (7) and is used for measuring the bottom pressure of the sterilization cavity (7);

the pressure valve (22) and the pressure gauge (23) are arranged on the outer wall of the upper part of the sterilizing cavity (7) through a tee joint.