CN103893788A - Sterilizer - Google Patents
Sterilizer Download PDFInfo
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- CN103893788A CN103893788A CN201410139467.4A CN201410139467A CN103893788A CN 103893788 A CN103893788 A CN 103893788A CN 201410139467 A CN201410139467 A CN 201410139467A CN 103893788 A CN103893788 A CN 103893788A
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- housing
- steriliser
- chamber door
- casing
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Abstract
The invention belongs to the technical field of disinfection equipment, and relates to a sterilizer. The sterilizer comprises a shell enclosed by an upper cover plate, a bottom plate, a front panel, a back panel and two vertical plates, wherein a heat component, a water tank component and a sterilization cylinder are arranged in the shell; the heat component comprises an arch part with an arch surface; the water tank component comprises an opening tank body; a connecting frame is connected outside the tank body in a sealed manner, and is clamped between the upper cover plate and the tank body; a first mounting hole is formed in the shell; a tank door is connected to the connecting frame in a hinged manner, and the opening of the tank body can run through the connecting frame and the first mounting hole; the tank door is arranged outside the shell, and a closed space is formed by the tank door, the connecting frame and the tank body when the tank door is covered. The invention also relates to a preparation method of the shell, which comprises the steps of preparing materials, molding by casting, thermally treating, plating silver, and performing ion bombardment to obtain the shell of the sterilizer. The sterilizer is reasonable in design, and convenient for assembling and disassembling the heat component; the shell has an antibacterial performance, and the corrosion resistance of the shell is not influenced.
Description
Technical field
The invention belongs to sterilizing equipment decontaminating apparatus technical field, relate to a kind of steriliser.
Background technology
Steriliser utilizes the feature that antibacterial cannot survive under high-temperature high-pressure state to design, and is used for the antibacterial of going out except in article.Steriliser is desirable sterilizing equipment decontaminating apparatus, and it is applicable to the units such as medical and health care system, scientific research cause, agricultural, can be to the sterilizing that carries out disinfection of the article such as medical apparatus and instruments, glass drying oven, hydroponics base.
Heater, water tank, drain valve are all the important composition parts of steriliser, in prior art, the mounting means of heater generally has two kinds: one is that heater is arranged on to steriliser cavity outside, be installed with water channel outward at heater again, water in water channel is delivered in sterilization cylinder after heater heating again, such heater, installation and removal are all inconvenient, life-time service gets off, in water channel, there is unavoidably incrustation scale, and just must unload heater when water channel will be cleaned simultaneously, design unreasonable, make operation not convenient; Another kind of mounting means is exactly the bottom that directly heater is arranged on to sterilization cylinder inner chamber, although make like this heating of water in sterilization cylinder more directly with effective, but in cleaning sterilizing cylinder, be just difficult to steriliser to clean out, design unreasonablely, affect the follow-up effective work of steriliser.
In prior art, water tank is typically chosen in top-type, it is arranged on the upper cover plate of steriliser, top is completely unlimited, in the time that water tank at top is installed, need to be first arranged with seal washer in tank top surrounding, again water tank is snapped in together with seal washer to the installation position of upper cover plate, finally by parts such as screws, water tank is fixedly mounted on steriliser, staff is in the time carrying out such operational motion, need to constantly adjust seal washer so that the sealing effectiveness between tank top and upper cover plate reaches optimum state, waste time and energy, and mount and dismount all cumbersome.In addition, because water tank is open structure, so general those skilled in the art can cover and establish a lid again on water tank, in the time of needs water filling, lid is taken away on one side, and staff tends to forget lid is covered once again after water filling, design unreasonable, use also and inconvenient, directly have influence on the normal work of steriliser.In addition, in prior art, the housing of steriliser is all generally that common alloy is made, and there is no sterilization effect.
In sum, for solving the structural deficiency of existing steriliser, need all sterilisers eaily of a kind of reasonable in design, simple in structure, installation and removal of design.
Summary of the invention
The object of the invention is to have the problems referred to above for existing technology, proposed a kind of reasonable in design, simple in structure, installation and removal all eaily, and there is the steriliser of antibacterial effect.
Object of the present invention can realize by following technical proposal: a kind of steriliser, comprise by upper cover plate, base plate, front plate, backplate and two risers surround the housing of composition, in described housing, heating component is installed, cistern assembly and sterilization cylinder, it is characterized in that, described heating component comprises the arcuate member with arcwall face, described arcuate member is arranged on the lateral wall of sterilization cylinder and the lateral wall of described arcwall face and sterilization cylinder fits tightly, described cistern assembly comprises opening-like casing, described casing external seal is connected with connection box and connection box is clamped between upper cover plate and casing, on housing, offer the first installing hole, the opening that is hingedly connected with chamber door and casing on described connection box can run through by connection box and the first installing hole, chamber door is arranged on chamber door outside housing and in the time covering chamber door, connection box and casing three form enclosed space,
Wherein, the preparation method of described housing comprises the steps:
S1, by pouring into the each parts of steriliser housing after 304 rustless steel ingredient compositions, comprise upper cover plate, base plate, front plate, backplate and two risers;
S2, the each parts of steriliser housing of molding are heat-treated, heat treatment comprises solution treatment and Ageing Treatment, and wherein solid solubility temperature is 1100-1200 DEG C, solution time 3-5 hour, and aging temp is 320-400 DEG C, aging time 2-4 hour;
S3, by the each parts of steriliser housing after heat treatment clean successively, oil removing, cleaning, rust cleaning activation, clean, dry;
S4, under the condition of 10-20 DEG C, the each parts of above-mentioned dried steriliser housing are put into plating solution and carry out silver-platedly, the time is 20-60min;
S5, the each parts of steriliser housing after silver-plated are cleaned and dry up and be placed in PVCD stove with clear water, under the condition of fine vacuum, carry out plasma bombardment taking argon as working gas, by screw, each housing assembly is connected after cooling and obtains final products steriliser housing.
Each parts of steriliser middle shell of the present invention are made by rustless steel, utilize deposit and spread legal system for silver-containing antibacterial rustless steel, first on stainless steel base, deposit the silver layer of 200-500nm thickness by the mode of chemical plating, then in PCVD stove, utilize Ar+ to bombard silver layer, recoil and the enhancing spreading effect of utilizing bombardment to produce, make silver infiltrate and be diffused in stainless steel base in the mode that strengthens diffusion, thereby formation is stable, even dispersion distributes, is rich in the antibiotic layer of silver element, has antibacterial performance thereby give steriliser housing of the present invention.
The method of steriliser housing chemical silvering of the present invention is simple to operate, and uniform coated ability is good, compared with other processes more easily for the follow-up antimicrobial treatment of matrix provides silver-colored medium.The combination degree of chemical plating silver layer and matrix has a great impact ion bom bardment diffusion antimicrobial treatment, and coating is in conjunction with tight, and silver element is just low to the potential energy of matrix diffusion, easily enters matrix; In conjunction with not tight, interface energy increases, and silver element is difficult to enter matrix, and in matrix, antiseptic elements reduces, and affects the anti-microbial property of housing.In addition, the quantity delivered of the thickness effect silver of silver coating, if the coating of chemical silvering were too thin≤100nm, follow-up ion bom bardment antimicrobial treatment can make to sputter away part silver, thereby cause silver-colored quantity delivered deficiency, the silver that enters matrix is few, is difficult to play antibacterial effect, and therefore coating should remain on 200-500nm.
Known by testing, it is strong not as being distributed in disperse mode in stainless steel base to the antibacterial action of staphylococcus aureus that silver entirety is overlying on substrate surface, its reason is that the main disperse of silver is distributed in the fault locations such as the crystal boundary of stainless steel base, these defects cause the change of solid internal field performance, thereby make the silver atoms in interface may produce polarization, make silver be easy to be combined with the bacteria cell wall that shows characteristic electron and play the effect of sterilization.The defects such as while crystal boundary are also the rapid diffusion passages of atomic migration, are conducive to the stripping of silver atoms, thereby strengthen antibacterial effect, therefore after chemical silvering, carry out ion bom bardment antimicrobial treatment, are beneficial to silver-colored disperse to be distributed in wherein; In addition, the adhesion of chemical silvering is not high, while work in friction environment, silver-colored antiseptic elements at matrix surface easily loses, and after chemical silvering through ion bom bardment, on the one hand can make the combination of silver coating and matrix tight, the recoil effect of ion bom bardment and Conversion of energy effect on the other hand, make the part of atoms of silver coating enter matrix, even after friction, there is good anti-microbial property owing to still remaining with the silver element of antibacterial functions in matrix.
The present invention's 304 rustless steels pour into steriliser housing and can make by common pouring technology, and concrete technique is as follows: according to melting in smelting furnace after 304 rustless steel ingredient compositions, be stirred to melt even; To adding the processing of going bad of phosphorous alterant in melt, then carry out ultrasonic Treatment; By the melt cast molding through ultrasonic Treatment, then carry out annealing in process and forging.
As preferably, 304 rustless steels described in the step S1 of housing preparation method are grouped into by the one-tenth of following mass percent: carbon (C): 0.08-0.18%, chromium (Cr): 16.00-17.50%, nickel (Ni): 4.00-6.00%, silicon (Si)≤1.00%, manganese (Mn) :≤2.00%, phosphorus (P)≤0.035%, sulfur (S)≤0.30%, surplus is ferrum (Fe) and inevitable impurity.
In steriliser housing 304 rustless steels of the present invention, carbon, chromium are essential elements, silicon, phosphorus, sulfur are impurity, should control its content, nickel is good resistant material, but expensive, the performance of compound material, the price of nickel and the restriction of some other factor, the present invention has suitably reduced nickel content on 304 stainless bases.
As preferably, the concrete steps of housing preparation method step S3 are for first cleaning with distilled water, then the NaOH solution oil removing that is 10% with mass fraction under the condition of 60-80 DEG C, then again clean with distilled water, then the H that is 10% with mass fraction
2sO
4rust cleaning activation, finally cleans with distilled water, dries up.
As preferably, the plating solution described in the step S4 of housing preparation method is mixed by following solution: the AgNO that concentration is 12-18g/L
3, the C that concentration is 8-12mL/L
2h
5oH, the sodium potassium tartrate tetrahydrate (KNaC that concentration is 12-18g/L
4h
4c
64H
2o).General chemical silvering stability of solution is very poor, generally can only stablize 20min left and right, and the silver layer obtaining is very thin, simultaneously due to Ag
+current potential is higher, can use multiple reducing agent.Consider industrial needs, should obtain deposition velocity faster, ensure again the stability of plating solution, for this reason through overtesting, the present invention determines and in plating solution, adds dehydrated alcohol as stabilizing agent.
As preferably, the voltage of the step S5 ionic medium bombardment of housing preparation method is 1.00-1.50kV, and throughput is 10-18mL/min, and temperature is 600-700 DEG C, and the working time is 2-5 hour.
In above-mentioned a kind of steriliser, described arcuate member offers some through holes that be arranged in parallel along sterilization cylinder axial direction, is all inserted with heating tube in each through hole, and described arcuate member is fixedly mounted on by clip on the lateral wall of sterilization cylinder, wherein, on described arcwall face, be coated with one deck equadag coating.
In above-mentioned a kind of steriliser, on described connection box, be provided with on button fixed block and button fixed block button is installed, the both sides that are listed in connection box are divided in described button fixed block, chamber door hinged place, between described button and button fixed block, be provided with back-moving spring, on described chamber door, offer the breach corresponding with button, and the medial wall of breach and the lateral wall of button fit tightly in the time covering chamber door.
In above-mentioned a kind of steriliser, described casing has body convex edge, and described connection box faces on the end face of casing and is provided with the first groove, and body convex edge can be tightly connected with the first groove, between described body convex edge and the first groove, is provided with seal washer.
In above-mentioned a kind of steriliser, connection box deviates from and on the end face of casing, is provided with support portion, the second groove and is connected convex edge between support portion and the second groove, described connection convex edge is run through by the first installing hole, described chamber door face on the end face of casing, be provided with can with the door convex edge that is connected convex edge medial surface and fits tightly, in described the second groove, be provided with sub-gasket.Wherein, after chamber door is opened, the maximum angle that chamber door faces between end face and the casing outer face of casing is obtuse angle, and described chamber door faces on the end face of casing and is provided with some reinforcements, and described reinforcement is evenly distributed in a convex edge.
Compared with prior art, the present invention has following advantage:
1, steriliser of the present invention is arranged on heating component on the lateral wall of sterilization cylinder, and be provided with equadag coating on the arcwall face of being close at arcuate member and sterilization cylinder, make the better effects if of heating component to sterilization cylinder transferring heat energy, life-time service gets off, heating component can't affect the cleaning of sterilization cylinder and extraneous water channel, reasonable in design, and installation and removal heating component is all more convenient.
2, the housing of steriliser of the present invention selects silver-containing antibacterial rustless steel to make, and silver-containing antibacterial rustless steel is to make by the deposit and spread method of first carrying out chemical silvering and carry out ion bom bardment on 304 stainless bases, there is anti-microbial property thereby give steriliser housing, do not affect its decay resistance simultaneously.
3, the casing of steriliser water tank of the present invention is arranged on upper cover plate, casing and connection box are tightly connected, connection box and upper cover plate are tightly connected, reasonable in design, good airproof performance, mount and dismount all more convenient, chamber door and casing are articulated and connected, and button is installed on connection box, chamber door, button, connection box three be tightly connected, in the time that needs are opened chamber door water filling, staff only needs one hand to press the button to make button to sink, staff takes advantage of a situation and hands is stretched in box opening and catch on chamber door along breach direction, again by just water filling in casing in the past of chamber door pull-up, after water filling completes, cover chamber door, return back to not compression position at action of reset spring knob down, after chamber door is closed, the outer face of chamber door flushes with the outer face of upper cover plate, global design is reasonable, elegant in appearance, simple in structure and easy to use, in addition, because water tank is top-type, it is opening up, the maximum angle that chamber door can be opened in the time of water filling is obtuse angle, it is larger that chamber door is opened amplitude, can facilitate staff's water filling, avoid in the injecting process, due to chamber door, to open amplitude too small, cause falling after rise downwards and weighing staff wounded at the effect lower chamber door of self gravitation, in addition, chamber door is connected with connection box, after water filling, staff is general so just can not forget chamber door is covered once again, reasonable in design and easy to use,
Brief description of the drawings
Fig. 1 is the structural representation of a preferred embodiment of the present invention.
Fig. 2 is the structural representation at another visual angle of the present invention.
Fig. 3 is partial structurtes schematic diagram of the present invention.
Fig. 4 is the structural representation of arcuate member in a preferred embodiment of the present invention.
Fig. 5 is the structural representation at another visual angle of Fig. 4.
Fig. 6 is the structural representation at another visual angle of Fig. 2.
Fig. 7 is the structural representation of cistern assembly in a preferred embodiment of the present invention.
Fig. 8 be in Fig. 6 A-A to cutaway view.
Fig. 9 is the structural representation of connection box in a preferred embodiment of the present invention.
In figure, 10, housing; 101, upper cover plate; 102, base plate; 103, front plate; 104, riser; 41, arcuate member; 411, arcwall face; 412, through hole; 50, cistern assembly; 51, casing; 511, body convex edge; 52, connection box; 521, button fixed block; 522, the first groove; 523, support portion; 524, the second groove; 525, connect convex edge; 53, chamber door; 531, breach; 532, door convex edge; 533, reinforcement; 54, button; 55, back-moving spring; 70, sterilization cylinder.
Detailed description of the invention
Be below specific embodiments of the invention by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiment.
As shown in figure 1 to figure 13, this steriliser comprises by upper cover plate 10, base plate 102, front plate 103, backplate and two risers surround the housing of composition, heating component, cistern assembly 50 and opening-like sterilization cylinder 70, heating component comprises the arcuate member 41 with arcwall face 411, arcuate member 41 is arranged on the lateral wall of sterilization cylinder 70 and arcwall face 411 fits tightly with the lateral wall of sterilization cylinder 70, cistern assembly 50 comprises opening-like casing 51, casing 51 external seals are connected with connection box 52, on connection box 52, be hingedly connected with chamber door 53, on upper cover plate 20, offer the first installing hole, the opening of casing 51 can run through by connection box 52 and the first installing hole, casing 51 is arranged on upper cover plate 20 medial walls, connection box 52 is clamped between upper cover plate 20 and casing 51, chamber door 53 is arranged on outside upper cover plate 20, in the time covering chamber door 53, chamber door 53, connection box 52, casing 51 threes can form enclosed space, in front plate 10, offer the second installing hole 11, drain valve 60 also fixes in front plate 10 through the second installing hole 11.
Preferably, arcuate member 41 has good heat conduction function, arcuate member 41 offers multiple through holes that be arranged in parallel 412 along sterilization cylinder 70 axial directions, the interior heating tube that is all inserted with of each through hole 412, and arcuate member 41 is fixedly mounted on the lateral wall of sterilization cylinder 70 by clip (not shown).Such structural design, not only arcuate member 41 gives that sterilization cylinder 70 heating are fast and heating tube is installed, dismounting, change all easily, takes up room little.In addition, yoke configurations simplicity of design and installation and removal are all more convenient, are convenient to change arcuate member 41 and cleaning equipment.
Preferably, on arcwall face 411, be coated with one deck equadag coating.Graphite material coating has the features such as heat-resisting quantity is good, stable chemical performance, good thermal shock, also has the good characteristic such as electric conductivity, heat conductivity, equadag coating can make the better effects if of heating component to sterilization cylinder 70 transferring heat energy, can according to actual needs, graphite material coating be replaced with to other materials coating.
Preferably, on connection box 52, be provided with on button fixed block 521 and button fixed block 521 button 54 is installed, the both sides that are listed in connection box 52 are divided in button fixed block 521, chamber door 53 hinged places, between button 54 and button fixed block 521, be provided with back-moving spring 55, on chamber door 53, offer the breach corresponding with button 54 531, in the time covering chamber door 53, the inner side wall energy of breach 531 and the lateral wall of button 54 fit tightly.
Preferably, casing 51 has body convex edge 511, and connection box 52 faces on the end face of casing 51 and is provided with the first groove 522, and body convex edge 511 can be tightly connected with the first groove 522, between body convex edge 511 and the first groove 522, is provided with seal washer.The first groove 522 is far away apart from the opening of casing 51, do not affect the sealing of opening part, avoid in installation process because connection box 52 is crossed the thin stress deformation phenomenon producing with opening intersection, seal washer further plays sealing and reinforcement effect to the installation of casing 51 and connection box 52, improves stabilization of equipment performance.
Preferably, connection box 52 deviates from and on the end face of casing 51, is provided with support portion 523, the second groove 524 and is connected convex edge 525 between support portion 523 and the second groove 524, connecting convex edge 525 runs through by the first installing hole, chamber door 53 face on the end face of casing 51, be provided with can be connected door convex edge 532, the second grooves 524 that convex edge 525 medial surface fit tightly in be provided with sub-gasket.Under the state of closing at chamber door 53, door convex edge 532 faces the end face of casing 51 and the outer face of support portion 523 fits tightly, and the lateral surface of door convex edge 532 fits tightly with being connected convex edge 525 medial surface, simple in structure, makes the sealing effectiveness of water tank better.In addition, sub-gasket has sealing function and certain adsorption, good integrity to upper cover plate 20.
Further preferably, after chamber door 53 is opened, the maximum angle that chamber door 53 faces between end face and casing 51 outer faces of casing 51 is obtuse angle.Chamber door 53 is articulated and connected with casing 51, because water tank is top-type, it is opening up, the maximum angle that chamber door 53 can be opened in the time of water filling is obtuse angle, it is larger that chamber door 53 is opened amplitude, can facilitate staff's water filling, avoid in the injecting process, due to chamber door 53, to open amplitude too small, cause falling after rise downwards and weighing staff wounded at the effect lower chamber door 53 of self gravitation, in addition, chamber door 53 is connected with connection box 52, after water filling, staff is general so just can not forget chamber door 53 is covered once again, reasonable in design and easy to use.
Preferably, chamber door 53 faces on the end face of casing 51 and is provided with many reinforcements 533, and reinforcement 533 is evenly distributed in a convex edge 532.Reinforcement 533 has increased the anti-adaptability to changes of chamber door 53, makes a convex edge 532 fixed and not yielding, simple in structure, reasonable in design and do not affect chamber door 53 outward appearances.
In sum, this steriliser is under original state, heating component is directly installed on the lateral wall of sterilization cylinder 70, and on the arcwall face 411 of being close at arcuate member 41 and sterilization cylinder 70, be provided with equadag coating, make the better effects if of heating component to sterilization cylinder 70 transferring heat energy, life-time service gets off, heating component can't affect the work of sterilization cylinder 70 and extraneous water channel, reasonable in design, sterilization cylinder 70 convenient for cleaning and extraneous water channel, and installation and removal heating component is all more convenient.
The casing 51 of water tank is arranged on upper cover plate 20, casing 51 is tightly connected with connection box 52, connection box 52 is clamped between casing 51 and upper cover plate 20, connection box 52 is tightly connected with upper cover plate 20, reasonable in design, good airproof performance, mount and dismount all more convenient, chamber door 53 is articulated and connected with casing 51, and button 54 is installed on connection box 52, chamber door 53, button 54, connection box 52 threes be tightly connected, in the time that needs are opened chamber door 53 water filling, staff only needs one hand to press the button 54 button 54 is sunk, staff takes advantage of a situation and hands is stretched in casing 51 openings and catch on chamber door 53 along breach direction, again by just casing 51 interior water fillings in the past of chamber door 53 pull-ups, after water filling completes, cover chamber door 53, act on knob down 54 at back-moving spring 55 and return back to not compression position, after chamber door 53 is closed, the outer face of chamber door 53 flushes with the outer face of upper cover plate 20, global design is reasonable, elegant in appearance, simple in structure and easy to use.
In addition, the present invention, in order to obtain the good cistern assembly of performance, on the basis of 304 stainless steel chemical components, strictly controls the proportioning components of each alloying element.Specify that according to GB/T20878-2007 304 rustless steel compositions and mass percent thereof are: carbon (C)≤0.07%, silicon (Si)≤1.00%, manganese (Mn)≤2.00%, phosphorus (P)≤0.045%, sulfur (S)≤0.030%, chromium (Cr): 18.0-20.0%, nickel (Ni): 8.0-10.5%, ferrum (Fe): surplus.
And the present invention meets on the basis of above-mentioned chemical analysis strict control, determine that composition and mass percent thereof are: carbon (C): 0.08-0.18%, chromium (Cr): 16.00-17.50%, nickel (Ni): 4.00-6.00%, silicon (Si)≤1.00%, manganese (Mn) :≤2.00%, phosphorus (P)≤0.035%, sulfur (S)≤0.30%, surplus is ferrum (Fe) and inevitable impurity.
Embodiment 1
Prepare burden according to 304 rustless steel compositions of the present invention, after batching, in smelting furnace, melt, be stirred to melt even; To adding the processing of going bad of phosphorous alterant in melt, then carry out ultrasonic Treatment; Melt through ultrasonic Treatment is poured into respectively to the each parts of steriliser housing, comprise upper cover plate, base plate, front plate, backplate and two risers, then carry out annealing in process and forging.
The each parts of steriliser housing to molding are heat-treated, and heat treatment comprises solution treatment and Ageing Treatment, and wherein solid solubility temperature is 1150 DEG C, and solution time is 4 hours, and aging temp is 360 DEG C, and aging time is 3 hours.
The each parts of steriliser housing after heat treatment are first cleaned with distilled water, then the NaOH solution oil removing that is 10% with mass fraction under the condition of 70 DEG C, the H that is 10% with mass fraction then again cleaned with distilled water
2sO
4rust cleaning activation, then with distilled water cleaning, dry up.
Under the condition of 15 DEG C, the each parts of above-mentioned dried steriliser housing to be put into plating solution and carry out silver-platedly, the time is 40min, described plating solution is mixed by following solution: the AgNO that concentration is 14g/L
3, the C that concentration is 9mL/L
2h
5oH, the sodium potassium tartrate tetrahydrate (KNaC that concentration is 14g/L
4h
4c
64H
2o).
The each parts of steriliser housing after silver-plated are cleaned to dry up with clear water and be placed in LDMC-30 type PVCD stove, at 1.33*10
-2vacuum condition under carry out plasma bombardment taking argon as working gas, the voltage of described plasma bombardment is 1.20kV, and throughput is 14mL/min, and temperature is 650 DEG C, working time is 3 hours, by screw, each housing assembly is connected after cooling and obtains final products steriliser housing.
Embodiment 2
Prepare burden according to 304 rustless steel compositions of the present invention, after batching, in smelting furnace, melt, be stirred to melt even; To adding the processing of going bad of phosphorous alterant in melt, then carry out ultrasonic Treatment; Melt through ultrasonic Treatment is poured into respectively to the each parts of steriliser housing, comprise upper cover plate, base plate, front plate, backplate and two risers, then carry out annealing in process and forging.
The each parts of steriliser housing to molding are heat-treated, and heat treatment comprises solution treatment and Ageing Treatment, and wherein solid solubility temperature is 1100 DEG C, and solution time is 3 hours, and aging temp is 320 DEG C, and aging time is 2 hours.
The each parts of steriliser housing after heat treatment are first cleaned with distilled water, then the NaOH solution oil removing that is 10% with mass fraction under the condition of 60 DEG C, the H that is 10% with mass fraction then again cleaned with distilled water
2sO
4rust cleaning activation, then with distilled water cleaning, dry up.
Under the condition of 10 DEG C, the each parts of above-mentioned dried steriliser housing to be put into plating solution and carry out silver-platedly, the time is 20min, described plating solution is mixed by following solution: the AgNO that concentration is 12g/L
3, the C that concentration is 8mL/L
2h
5oH, the sodium potassium tartrate tetrahydrate (KNaC that concentration is 12g/L
4h
4c
64H
2o).
The each parts of steriliser housing after silver-plated are cleaned to dry up with clear water and be placed in LDMC-30 type PVCD stove, at 1.33*10
-3vacuum condition under carry out plasma bombardment taking argon as working gas, the voltage of described plasma bombardment is 1.00kV, and throughput is 12mL/min, and temperature is 600 DEG C, working time is 2 hours, by screw, each housing assembly is connected after cooling and obtains final products steriliser housing.
Embodiment 3
Prepare burden according to 304 rustless steel compositions of the present invention, after batching, in smelting furnace, melt, be stirred to melt even; To adding the processing of going bad of phosphorous alterant in melt, then carry out ultrasonic Treatment; Melt through ultrasonic Treatment is poured into respectively to the each parts of steriliser housing, comprise upper cover plate, base plate, front plate, backplate and two risers, then carry out annealing in process and forging.
The each parts of steriliser housing to molding are heat-treated, and heat treatment comprises solution treatment and Ageing Treatment, and wherein solid solubility temperature is 1200 DEG C, and solution time is 5 hours, and aging temp is 400 DEG C, and aging time is 4 hours.
The each parts of steriliser housing after heat treatment are first cleaned with distilled water, then the NaOH solution oil removing that is 10% with mass fraction under the condition of 80 DEG C, the H that is 10% with mass fraction then again cleaned with distilled water
2sO
4rust cleaning activation, then with distilled water cleaning, dry up.
Under the condition of 20 DEG C, the each parts of above-mentioned dried steriliser housing to be put into plating solution and carry out silver-platedly, the time is 50min, described plating solution is mixed by following solution: the AgNO that concentration is 16g/L
3, the C that concentration is 11mL/L
2h
5oH, the sodium potassium tartrate tetrahydrate (KNaC that concentration is 16g/L
4h
4c
64H
2o).
The each parts of steriliser housing after silver-plated are cleaned to dry up with clear water and be placed in LDMC-30 type PVCD stove, at 1.5*10
-3vacuum condition under carry out plasma bombardment taking argon as working gas, the voltage of described plasma bombardment is 1.40kV, and throughput is 18mL/min, and temperature is 700 DEG C, working time is 5 hours, by screw, each housing assembly is connected after cooling and obtains final products steriliser housing.
The steriliser housing making in embodiment 1-3 is carried out to measuring mechanical property and contrast with the stainless mechanical performance of standard 304, test result is in table 1.
Table 1: the stainless mechanical performance synopsis of steriliser housing of the present invention and standard 304
The mechanical performance of the steriliser housing that as can be seen from Table 1, the present invention makes improves compared with standard 304 rustless steels.
Anti-microbial property test
Getting the steriliser housing that the present invention makes is experimental sample, and control sample is 304 rustless steels, and experiment microorganism adopts escherichia coli, staphylococcus aureus, Candida albicans, withered black bacterium.Experimental arrangement is as follows:
1), by the experimental sample after ethanol cleans and control sample high temperature sterilize at 121 DEG C, 30min.
2), by PBS liquid (0.03mol/L), PH=7.2, disodium hydrogen phosphate,anhydrous 2.83g, potassium dihydrogen phosphate 1.36g, distilled water 1000ml for postvaccinal strain) to be diluted to concentration be 10
5titer.
3), evenly drip to the surface of experimental sample and control sample with 0.5ml standard bacterium liquid, effect 24h in the incubator that to put into 35 DEG C, humidity be 95%.
4), in the incubator of 35 DEG C, place 48h by flat band method (agar culture method), finally calculate antibacterial number from plastics plate, and calculate sterilizing rate.
Each strain and sample all repeat to do three times, average.
Wherein the computing formula of antibiotic rate is:
Sterilizing rate (%)=(control sample aerobic plate count-experimental sample aerobic plate count)/control sample aerobic plate count х 100
The antibiotic rate of steriliser housing of the present invention is: escherichia coli sterilization rate is 99.8%, and staphylococcus aureus sterilization rate is 99.6%, and Candida albicans sterilization rate is 99.2%, and withered black bacterium sterilization rate is 82.5%.304 stainless antibiotic rates are: escherichia coli sterilization rate is 52.8%, and staphylococcus aureus sterilization rate is 48.6%, and Candida albicans sterilization rate is 57.3%, and withered black bacterium sterilization rate is 46.7%.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendments or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (9)
1. a steriliser, comprise by upper cover plate, base plate, front plate, backplate and two risers surround the housing of composition, in described housing, heating component is installed, cistern assembly and sterilization cylinder, it is characterized in that, described heating component comprises the arcuate member with arcwall face, described arcuate member is arranged on the lateral wall of sterilization cylinder and the lateral wall of described arcwall face and sterilization cylinder fits tightly, described cistern assembly comprises opening-like casing, described casing external seal is connected with connection box and connection box is clamped between upper cover plate and casing, on housing, offer the first installing hole, the opening that is hingedly connected with chamber door and casing on described connection box can run through by connection box and the first installing hole, chamber door is arranged on chamber door outside housing and in the time covering chamber door, connection box and casing three form enclosed space,
Wherein, the preparation method of described housing comprises the steps:
S1, by pouring into respectively the each parts of steriliser housing after 304 rustless steel ingredient compositions, comprise upper cover plate, base plate, front plate, backplate and two risers;
S2, the steriliser housing of molding is heat-treated, heat treatment comprises solution treatment and Ageing Treatment, and wherein solid solubility temperature is 1100-1200 DEG C, and solution time is 3-5 hour, and aging temp is 320-400 DEG C, and aging time is 2-4 hour;
S3, by the each parts of steriliser housing after heat treatment clean successively, oil removing, cleaning, rust cleaning activation, clean, dry;
S4, under the condition of 10-20 DEG C, the each parts of above-mentioned dried steriliser housing are put into plating solution and carry out silver-platedly, the time is 20-60min;
S5, the each parts of steriliser housing after silver-plated are cleaned and dry up and be placed in PVCD stove with clear water, under the condition of fine vacuum, carry out plasma bombardment taking argon as working gas, by screw, each housing assembly is connected after cooling and obtains final products steriliser housing.
2. steriliser according to claim 1, it is characterized in that, 304 rustless steels described in the step S1 of housing preparation method are grouped into by the one-tenth of following mass percent: carbon (C): 0.08-0.18%, chromium (Cr): 16.00-17.50%, nickel (Ni): 4.00-6.00%, silicon (Si)≤1.00%, manganese (Mn) :≤2.00%, phosphorus (P)≤0.035%, sulfur (S)≤0.30%, surplus is ferrum (Fe) and inevitable impurity.
3. steriliser according to claim 1, it is characterized in that, the concrete steps of housing preparation method step S3 are for first cleaning with distilled water, then the NaOH solution oil removing that is 10% with mass fraction under the condition of 60-80 DEG C, then again clean the H that is 10% with mass fraction with distilled water
2sO
4rust cleaning activation, then with distilled water cleaning, dry up.
4. steriliser according to claim 1, is characterized in that, the plating solution described in the step S4 of housing preparation method is mixed by following solution: the AgNO that concentration is 12-18g/L
3, the C that concentration is 8-12mL/L
2h
5oH, the sodium potassium tartrate tetrahydrate (KNaC that concentration is 12-18g/L
4h
4c
64H
2o).
5. steriliser according to claim 1, is characterized in that, the voltage of plasma bombardment described in the step S5 of housing preparation method is 1.00-1.50kV, and throughput is 10-18mL/min, and temperature is 600-700 DEG C, and the working time is 2-5 hour.
6. a kind of steriliser according to claim 1, it is characterized in that, described arcuate member offers some through holes that be arranged in parallel along sterilization cylinder axial direction, is all inserted with heating tube in each through hole, and described arcuate member is fixedly mounted on the lateral wall of sterilization cylinder by clip.
7. a kind of steriliser according to claim 1, it is characterized in that, on described connection box, be provided with on button fixed block and button fixed block button is installed, the both sides that are listed in connection box are divided in described button fixed block, chamber door hinged place, between described button and button fixed block, be provided with back-moving spring, on described chamber door, offer the breach corresponding with button, and the medial wall of breach and the lateral wall of button fit tightly in the time covering chamber door.
8. a kind of steriliser according to claim 7, it is characterized in that, described casing has body convex edge, faces on the end face of casing, to be provided with the first groove and body convex edge can be tightly connected with the first groove at connection box, between described body convex edge and the first groove, is provided with seal washer.
9. a kind of steriliser according to claim 8, it is characterized in that, connection box deviates from and on the end face of casing, is provided with support portion, the second groove and is connected convex edge between support portion and the second groove, described connection convex edge is run through by the first installing hole, described chamber door face on the end face of casing, be provided with can with the door convex edge that is connected convex edge medial surface and fits tightly, in described the second groove, be provided with sub-gasket.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005046426A (en) * | 2003-07-30 | 2005-02-24 | Aiho Corp | Container device |
| CN2728493Y (en) * | 2004-05-21 | 2005-09-28 | 铜陵有色金属(集团)公司 | Low heat inertia steam sterilization device |
| CN1981874A (en) * | 2005-12-14 | 2007-06-20 | 浙江省医疗器械研究所 | Conduit sterilizer |
| CN203303379U (en) * | 2013-06-09 | 2013-11-27 | 宁波艾康机电有限公司 | Steam generator for sterilizer |
-
2014
- 2014-04-09 CN CN201410139467.4A patent/CN103893788B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005046426A (en) * | 2003-07-30 | 2005-02-24 | Aiho Corp | Container device |
| CN2728493Y (en) * | 2004-05-21 | 2005-09-28 | 铜陵有色金属(集团)公司 | Low heat inertia steam sterilization device |
| CN1981874A (en) * | 2005-12-14 | 2007-06-20 | 浙江省医疗器械研究所 | Conduit sterilizer |
| CN203303379U (en) * | 2013-06-09 | 2013-11-27 | 宁波艾康机电有限公司 | Steam generator for sterilizer |
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