CN207187782U - Metal bath - Google Patents

Abstract

It the utility model is related to biochemical instrument technical field, there is provided a kind of metal bath, including reagent thermal insulating seat, it is characterised in that：Reagent thermal insulating seat includes heat insulating block and the container base being housed in heat insulating block, and relative two medial surfaces of heat insulating block offer the escape groove of insertion top surface, and corresponding escape groove is provided with holding tank at the top of container base two opposite sides outer wall.Container base of the present utility model takes out very convenient.

Description

Metal bath

Technical field

Biochemical instrument is the utility model is related to, in particular, the utility model is related to a kind of metal bath.

Background technology

The preservation and reaction of biochemical reagents usually require to meet certain temperature conditionss, and constant-temperature metal bath is exactly that one kind is made a living The preservation and reaction for changing reagent carry out temperature controlled instrument, and the instrument is widely used in protecting, being various for various biological samples The preservation and reaction of enzyme, the denaturation treatment of nucleic acid and protein, PCR（PCR）Reaction, electrophoresis pre-degeneration and Serum solidification etc..

Current constant-temperature metal bath, it is made up of in configuration aspects the multiple devices being close to successively from top to bottom, including examination Agent thermal insulating seat, pad, heating and cooling part, thermal component, the side of thermal component are provided with supply unit and display panel.Reagent is protected Warm seat includes heat insulating block and the container base being housed in heat insulating block.Wherein, heating and cooling part needs to be close to thermal component, with The conduction of heat is realized, and is radiated.Container base is also required to closely be housed in heat insulating block to ensure temperature stabilization, still Structure inconvenience container base too closely takes out out of heat insulating block.

Therefore a kind of new metal bath is needed, can facilitates and take out container base out of heat insulating block.

Utility model content

The purpose of this utility model is to provide a kind of metal bath, it is intended to it is inconvenient by appearance to solve metal bath in the prior art The problem of device pedestal takes out out of heat insulating block.

A kind of metal bath, including reagent thermal insulating seat, it is characterised in that：Reagent thermal insulating seat includes heat insulating block and is housed in insulation Container base in block, relative two medial surfaces of heat insulating block offer the escape groove of insertion top surface, container base two opposite sides Corresponding escape groove is provided with holding tank at the top of outer wall.

Further, the escape groove is the arc-shaped curved surface playing the guiding role, and holding tank includes forming the side wall of hook portion.

Further, the metal bath also includes a device for ejecting, and device for ejecting includes spring, seesaw and ejector button, The device for ejecting is arranged in the side wall of the heat insulating block, when container base is housed in heat insulating block completely, the seesaw One end compression spring after be in first position ejector button fixation, the other end of seesaw and the bottom phase of container base Contact, when pressing ejector button and being at the second place, one end of seesaw compression spring is released, and spring release elastic force pushes away One end of dynamic seesaw, and tilt container base.

Further, the metal bath also includes reagent thermal insulating seat, cooling piece, heat-conducting block, insulation pressing plate and radiator；

Described insulation pressing plate is located above radiator, is incubated the through hole being provided with pressing plate for being put into heat-conducting block, its In each heat-conducting block be individually fixed at the top of radiator, the heat-conducting block lower surface is close to the top surface of radiator On；

Described cooling piece is arranged on heat-conducting block, and the lower surface of cooling piece and the upper surface of heat-conducting block fit, refrigeration The upper surface of piece and the lower surface of the reagent thermal insulating seat fit；

Described metal bath also includes adjusting means, and the adjusting means is used for the shape between the insulation pressing plate and radiator Into elastic connection.

Further, the adjusting means includes O-ring, limited post and set screw；

It is provided with multiple stepped holes on the insulation pressing plate, multiple screws is provided with corresponding on the top surface of the radiator Hole, described O-ring have through hole, the tune on the step in the stepped hole of insulation pressing plate in the middle part of described limited post Section screw is passed through from the through hole of limited post, and the lower end of set screw is adapted with the screw hole of radiator, the set screw Screw terminal is pressed on described O-ring.

Further, the stepped hole on the insulation pressing plate run through by the first blind hole and on the first blind via bottom the One through hole is formed, and the aperture of the first blind hole is more than the aperture of first through hole.

Further, described limited post is arranged in first through hole, and the depth of the first through hole is a, the O-ring Line footpath be b, the maximum compression deformation quantity of O-ring is c, and the height of the limited post is d, wherein d=(b-c)+a.

Further, described adjusting means also includes pad, and the middle part of pad has a through hole, and the set screw is from pad Passed through in the through hole of piece, described pad is pressed on O-ring;

Described limited post is arranged in first through hole, and the depth of the first through hole is a, and the line footpath of the O-ring is B, the maximum compression deformation quantity of O-ring are c, and the thickness of the pad is e, and the height of the limited post is d, wherein d=(b-c)+ a+e。

Further, described reagent thermal insulating seat includes thermal insulation board, and the thermal insulation board is above insulation pressing plate, thermal insulation board Middle part is provided with the through hole for being put into the cooling piece.

Further, described reagent thermal insulating seat also includes heating plate and heat insulating block；

It is provided with the first groove to cave inward on the bottom surface of the heat insulating block, described thermal insulation board is arranged on described the In one groove；The second groove to cave inward is provided with the bottom surface of first groove, described heating plate is arranged on described The second groove in, the lower surface of heating plate and the upper surface of cooling piece and the upper surface of thermal insulation board fit, described examination Agent thermal insulating seat also includes container base, is additionally provided with the through hole for being put into container base on heat insulating block, and the through hole is through The bottom surface of two grooves, the upper surface of the heating plate and the lower surface of container base fit.

From the foregoing, it will be observed that metal bath of the present utility model not only devises escape groove and holding tank is used for container base conveniently Taken out from heat insulating block, and devise device for ejecting and be used in container base can be weighed to heat insulating block before taking out container base Predetermined height is risen to, therefore container base taking-up becomes very easy.In addition, metal bath of the present utility model can also fit The cooling piece of various sizes in the margin of tolerance, be not in the dimensional tolerance due to cooling piece, and cause cooling piece without The situation that method is close to heating plate, heat-conducting block occurs, and good contact is formed between cooling piece and heating plate and heat-conducting block, can The transmission of heat is timely carried out, and is distributed by radiator, improves the overall radiating effect of metal bath.

Brief description of the drawings

Fig. 1 is the dimensional structure diagram of metal bath in the utility model one embodiment.

Fig. 2 is the configuration schematic diagram of metal bath in the utility model one embodiment.

Fig. 3 is the exploded perspective view of metal bath internal structure in the utility model one embodiment.

Fig. 4 is the top view of metal bath internal structure in the utility model one embodiment.

Fig. 5 is diagrammatic cross-section at A-A in Fig. 4.

Fig. 6 is the first shape of cooling piece in the utility model another embodiment, heat-conducting block, insulation pressing plate and radiator State schematic diagram.

Fig. 7 is the second shape of cooling piece in the utility model another embodiment, heat-conducting block, insulation pressing plate and radiator State schematic diagram.

Fig. 8 is the dimensional structure diagram that pressing plate is incubated in the utility model one embodiment.

Fig. 9 is the schematic cross-section of adjusting means in the utility model one embodiment.

Figure 10 is the schematic cross-section of adjusting means in the utility model another embodiment.

Figure 11 is the configuration schematic diagram of another embodiment metal bath of the utility model.

Figure 12 is the rearview of internal structure in the utility model another embodiment.

Figure 13 is diagrammatic cross-section at C-C in Figure 12.

Figure 14 is the blast knot of heat insulating block in the utility model another embodiment, thermal insulation board, heat-conducting block and heating plate Structure schematic diagram.

Figure 15 is the configuration schematic diagram of the utility model further embodiment metal bath.

Figure 16 is the rearview in embodiment illustrated in fig. 15.

Figure 17 is diagrammatic cross-section at D-D in Figure 16.

Figure 18 is the diagrammatic cross-section of another embodiment metal bath of the utility model.

Figure 19 is the close-up schematic view at E in Figure 18.

Figure 20 is the close-up schematic view of another state at E in Figure 18.

Embodiment

In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation Example, the utility model is further elaborated.

The utility model proposes first embodiment, the present embodiment proposes a kind of metal bath, as shown in Figure 1 to Figure 3, metal Bath includes shell 10, bottom plate 20 and hot lid 30, and shell 10 is fixed on the base plate 20, and hot lid 30 is rotatably installed on shell 10, There is the display screen for being used for showing metal bath running status on shell 10, and for being controlled to the running status of metal bath Control panel 101.As shown in Figure 2 and Figure 3, reagent thermal insulating seat 40, cooling piece 102, heat conduction are provided with the shell 10 of metal bath Block 103, insulation pressing plate 104 and radiator 105, hot lid 30 are rotatablely connected with shell 10, and hot lid 30 is covered and is incubated in reagent The top of seat 40, insulation effect is played to the reagent in reagent thermal insulating seat 40.Described insulation pressing plate 104 is located at radiator 105 Top, it is incubated the through hole being provided with pressing plate 104 for being put into heat-conducting block 103, in the present embodiment, each heat-conducting block 103 The top of a radiator 105 is individually fixed on, and the lower surface of heat-conducting block 103 is close on the top surface of radiator 105, is led Hot block 103 is made of the good material of heat conductivility, such as copper；Cooling piece 102 is arranged on heat-conducting block 103, cooling piece 102 Lower surface and the upper surface of heat-conducting block 103 fit, the lower surface of the upper surface of cooling piece 102 and the reagent thermal insulating seat 40 Fit, when needing to cool to the reagent in reagent thermal insulating seat 40, the upper surface of cooling piece 102 is chill surface, system The lower surface of cold 102 is heating face, heat caused by the lower surface of cooling piece 102, by the effect of heat-conducting block 103, is transmitted Distributed to radiator 105, reduce the temperature of the lower surface of cooling piece 102.In the present embodiment, metal bath includes two refrigeration Piece 102 and two heat-conducting blocks 103, cooling piece 102 and heat-conducting block 103 are all square, and are incubated on pressing plate 104 and correspond to two heat conduction Block 103 is provided with two square through holes, and the lower section of insulation pressing plate 104 has two radiators 105, each of which heat-conducting block 103 are individually fixed on the top of a radiator 105.

Metal bath of the present utility model also includes adjusting means, and the adjusting means is used in the insulation pressing plate 104 and dissipated Elastic connection is formed between hot device 105, when being installed to cooling piece 102, heat-conducting block 103 is fixedly mounted on radiator 105, Cooling piece 102 is placed on heat-conducting block 103, hereafter carrying out installation to insulation pressing plate 104 is fixed to reagent thermal insulating seat 40 Bottom, due to be elastic connection between insulation pressing plate 104 and radiator 105, therefore cooling piece 102, heat-conducting block 103 and scattered Hot device 105 can then move relative to the insulation pressing plate 104；When the size of cooling piece 102 has error, still can protect Demonstrate,proving has good contact between the lower surface of cooling piece 102 and heat-conducting block 103, avoid between cooling piece 102 and heat-conducting block 103 There is gap, so as to improve heat conduction efficiency, improve heat dispersion, avoid influenceing dissipating for metal bath due to the error of cooling piece The thermal efficiency.

As shown in Fig. 3, Fig. 4, Fig. 5, described be incubated on pressing plate 104 is provided with multiple stepped holes 1040, in the present embodiment, protects Two through holes for being used to be put into heat-conducting block 103 are provided with temperature and pressure plate 104, through hole is square with heat-conducting block 103, each through hole Both ends corresponding to be provided with four stepped holes 1040, be mounted on an adjusting means in each stepped hole 1040（Only drawn in Fig. 3 The structural representation of one adjusting means）, four screw holes 1050 are provided with corresponding on the top surface of each radiator 105.This In embodiment, as shown in Fig. 3, Fig. 5, described adjusting means includes O-ring 501, limited post 502 and set screw 503, institute On the step in the stepped hole 1040 of insulation pressing plate 104, the described middle part of limited post 502 has logical the O-ring 501 stated Hole, the set screw 503 pass through from the through hole of limited post 502, the lower end of set screw 503 and the screw of radiator 105 Hole 1050 is adapted, and the screw terminal of the set screw 503 is pressed on described O-ring 501.In the present embodiment, metal bath also wraps Thermal insulation board 60 and heating plate 70 are included, wherein thermal insulation board 60 is positioned at the top position of insulation pressing plate 104, and the middle part of thermal insulation board 60 is set The through hole for being put into the cooling piece 102 is equipped with, heating plate 70 is arranged on the top of thermal insulation board 60, and cooling piece 102 is upper Surface and the lower surface of heating plate 70 fit.

By above-mentioned structure, and with reference to shown in Fig. 6, Fig. 7, we are carried out specifically to metal bath of the present utility model Bright, when cooling piece 102 is normal size, Fig. 6 is the mounting structure profile of the cooling piece 102 of normal size, cooling piece 102 positioned at thermal insulation board 60 through hole in, its upper surface and the lower surface of heating plate 70 fit, the lower surface of cooling piece 102 and The upper surface of heat-conducting block 103 is fitted, and now set screw 503 is attached pressing plate 104 is incubated with radiator 105, and O-shaped Circle 501 is in unpressed state.As shown in fig. 7, heat-conducting block 103 is fixed on radiator 105, radiator 105 passes through tune Regulating device and the insulation elastic connection of pressing plate 104, when being installed to cooling piece 102, load thermal insulation board 60 by cooling piece 102 In through hole, and insulation pressing plate 104 is fixed the bottom for being fixed to reagent thermal insulating seat 40, now, such as cooling piece 102 Size is there is error, during more than normal size, during upward fixed insulation pressing plate 104, due to the position of heating plate 70 Put it has been determined that heating plate 70 can not move, insulation pressing plate 104 moves upwards with heat-conducting block 103 and radiator 105, now Cooling piece 102 is then pressed down against heat-conducting block 103, and heat-conducting block 103 and radiator 105 then together move downward, now due to regulation The bottom of screw 503 is fixed on radiator 105, and the screw terminal of set screw 503 is pressed on O-ring 501, therefore adjusts spiral shell Silk 503 then together moves downward with radiator 105, then extrudes O-ring 501, O-ring 501 is produced deformation, radiator 105, leads Hot block 103 and the downward displacement of set screw 503 are L, and displacement L is the thickness for being equal to cooling piece 102 in the present embodiment The difference of degree and the normal thickness of cooling piece 102, it is also equal to the deformation quantity of the O-ring 501.Because O-ring 501 generates shape Become, its caused elastic force then tenses set screw 503, radiator 105 and heat-conducting block 103 so that the upper surface of heat-conducting block 103 It is brought into close contact with the lower surface of cooling piece 102, avoiding the size of cooling piece 102, there is error to produce gap between the two, from And heat conduction efficiency is improved, improve the radiating effect of metal bath.

Metal bath of the present utility model passes through the design to the line footpath of O-ring 501 so that O-ring 501 disclosure satisfy that cooling piece 102 are less than the situation of normal size there is thickness more than normal size and thickness.For example, when the normal thickness of cooling piece 102 For H, when tolerance is ± 0.1, the minimum dimension of the thickness of cooling piece 102 is H-0.1, and the full-size of cooling piece 102 is H+0.1, Now, by the design to the line footpath of O-ring 501, when the cooling piece 102 of minimum dimension is installed so that O-ring 501, which is in, to be omited The state of minute-pressure contracting；When maximum sized cooling piece 102 is installed so that O-ring 501 is then in the state just compressed.Base In this, metal bath of the present utility model can then be useful in the cooling piece 102 of the various sizes in the margin of tolerance, be not in by In the dimensional tolerance of cooling piece 102, and the situation appearance for causing cooling piece 102 can not be close to heating plate 70, heat-conducting block 103, Good contact is formed between cooling piece 102 and heating plate 70 and heat-conducting block 103, can timely carry out the transmission of heat, and Distributed by radiator 105, improve the overall radiating effect of metal bath.

As shown in Figure 8, Figure 9, further, in the above-described embodiment, the stepped hole 1040 on the insulation pressing plate 104 It is made up of the first blind hole 1041 and the first through hole 1042 run through on the bottom of the first blind hole 1041, the hole of the first blind hole 1041 Footpath is more than the aperture of first through hole 1042.Described limited post 502 is arranged in first through hole 1042, in the present embodiment, such as Shown in Fig. 9, the depth of the first through hole 1042 is a, and the line footpath of the O-ring 501 is b, the maximum compression shape of O-ring 501 Variable is c, and the height of the limited post 502 is d, wherein d=(b-c)+a.Pass through the design of this structure, the spiral shell of set screw 503 Line is fixed on cooling piece 102, and when tightening set screw 503, the screw terminal of set screw 503 then extrudes O-ring 501, makes O Type circle 501 produces deformation, and when O-ring 501 generates largest deformation, the screw terminal of set screw 503 is then pressed in described limit On the post 502 of position, so as to prevent set screw 503 from killing O-ring 501, the damage of O-ring 501 is avoided.Further, it is described Adjusting means also include pad 504, as shown in Figure 10, the middle part of pad 504 has a through hole, and the set screw 503 is from pad Passed through in the through hole of piece 504, described pad 504 is pressed on O-ring 501；Described limited post 502 is arranged on first through hole In 1042, the depth of the first through hole 1042 is a, and the line footpath of the O-ring 501 is b, the maximum compression deformation of O-ring 501 Measure as c, the thickness of the pad 504 is e, and the height of the limited post 502 is d, wherein d=(b-c)+a+e.Likewise, pass through The design of this structure, when O-ring 501 generates largest deformation, pad 504 is then pressed on described limited post 502, so as to Prevent set screw 503 from killing O-ring 501, avoid the damage of O-ring 501.

In above-mentioned arbitrary embodiment, for described metal bath, the utility model also proposed an embodiment, such as scheme Shown in 11, the metal bath also includes fan 80 and wind scooper 90, and described fan 80 is fixed on wind scooper 90,80, fan In the lower position of the radiator 105, described wind scooper 90 is fixed on the bottom plate 20, and corresponds to wind-guiding on bottom plate 20 The position of cover 90 is provided with air inlet 201, and the position that the side of the shell 10 corresponds to radiator 105 is provided with air outlet 106, By the effect of fan 80, air enters inside metal bath from air inlet 201, by wind scooper 90, blows to described radiator 105, accelerate the air flow of radiator 105, hot-air is discharged at air outlet 106, realizes the cooling to radiator 105.This Wind scooper 90 described in embodiment is generally rectangular shaped horn-like, and it is more than it towards wind towards the area of a side opening of bottom plate 20 Fan the aperture area of side.Further, in the present embodiment, as shown in Figure 11 to Figure 13, described reagent thermal insulating seat 40 also wraps Heat insulating block 401 is included, wherein, the first groove 4011 to cave inward is provided with the bottom surface of the heat insulating block 401, described is heat-insulated Plate 60 is arranged in the first described groove 4011；It is recessed that second to cave inward is provided with the bottom surface of first groove 4011 Groove 4012, described heating plate 70 are arranged in the second described groove 4012, lower surface and the cooling piece 102 of heating plate 70 Upper surface and the upper surface of thermal insulation board 60 fit.In addition, described reagent thermal insulating seat 40 also includes container base 402, protect It is additionally provided with the through hole for being put into container base 402 on warm block 401, the through hole is through the bottom surface of the second groove 4012, institute The upper surface and the lower surface of container base 402 for stating heating plate 70 fit, and the heat of heating plate 70 is then transferred to container base In 402, the reagent sample in container base 402 is incubated；The design of 401 this structure of heat insulating block, heating plate 70 is wrapped It is rolled in inside heat insulating block 401, the loss of heat can be prevented very well, heating plate 70 and extraneous air has been completely cut off by thermal insulation board 60 Heat exchange, improve the heat insulation effect of metal bath.

In above-mentioned arbitrary embodiment, for described metal bath, the utility model also proposed an embodiment, such as scheme Shown in 15-17, the 3rd groove 4013 to cave inward, the 3rd groove 4013 are provided with the top surface of the heat insulating block 401 For the fixed seal gasket being covered on reagent thermal insulating seat 40（It is not shown）, in preferably implementing, the 3rd groove 4013 is Single continuous annular groove or multiple strip grooves being spaced apart.

In the present embodiment, relative two medial surfaces 4017,4018 of heat insulating block 401 offer the escape groove of insertion top surface, That is the first escape groove 4014 and the second escape groove 4015.The first escape groove 4014 and the second escape groove 4015 are relative in the present embodiment Towards setting, and there is arc-shaped curved surface, with facilitate operating personnel's finger or clamping fixture take container base 402 when contact container The top of the two opposite sides outer wall of pedestal 402, first pair of operating personnel's finger or clamping fixture, which stretch into inside escape groove to rise to be oriented to, to be made With and be not easy damage finger or tool.Container base 402 picks and places for convenience in the present embodiment, the two opposite sides of container base 402 Corresponding first escape groove 4014 and the second escape groove 4015 are respectively arranged with holding tank at the top of outer wall, i.e. the first holding tank 4024, Second holding tank 4025, first holding tank 4024 towards and corresponding first escape groove 4014 set, shown second holding tank 4025 directions and corresponding second escape groove 4015.Container base 402 described in present embodiment includes multiple arranged in arrays Container houses post 4021, first holding tank 4024, and two containers for being arranged on side house post 4021 towards the first avoidance The surface of groove 4014, second holding tank 4025 are arranged on two second containers of opposite side and house post 4021 towards the second avoidance The surface of groove 4015.Holding tank described in better embodiment is square groove, and the side wall 4026 of the holding tank forms hook portion, with Facilitate operating personnel's finger or clamping fixture catch on container base 402 after take out.

It is described for convenience by container base 402 from heat insulating block 401 from taking-up in alternate embodiment with reference to figure 18-20 Reagent thermal insulating seat 40 further comprises a device for ejecting 49, and device for ejecting 49 includes spring 491, seesaw 492 and ejector button 493.The device for ejecting 49 is arranged in the side wall of the heat insulating block 401, as shown in figure 19, when container base 402 is received completely When holding in heat insulating block 401, the ejector button 493 of first position is in after the compression spring of one end 4921 of the seesaw 492 Fixation, the other end 4922 of seesaw 492 and the bottom connection of container base 402 touch, with reference to figure 20, when rotating ejector button 493 when being at the second place, and one end of the compression spring 491 of seesaw 492 is released, and spring 491 discharges elastic force and promotes seesaw 492 one end 4921, it will be tilted in the presence of lever force with the tactile other end 4922 of the bottom connection of container base 402 so that Container base 402 is ejected from heat insulating block 401 and rises default height, further facilitates operating personnel's finger or clamping fixture Taken out after catching container base 402.Ejector button 493 described in present embodiment is with post planar structure, and it is towards seesaw 492 one end 4921 has corresponding limit opening.

Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model Protection domain within.

Claims (10)

1. a kind of metal bath, including reagent thermal insulating seat, it is characterised in that：Reagent thermal insulating seat includes heat insulating block and is housed in heat insulating block Interior container base, relative two medial surfaces of heat insulating block offer the escape groove of insertion top surface, outside container base two opposite sides Corresponding escape groove is provided with holding tank at the top of wall.

2. metal bath according to claim 1, it is characterised in that：The escape groove is the arc-shaped curved surface playing the guiding role, Holding tank includes forming the side wall of hook portion.

3. metal bath according to claim 2, further comprise a device for ejecting, device for ejecting include spring, seesaw and Ejector button, the device for ejecting is arranged in the side wall of the heat insulating block, when container base is housed in heat insulating block completely, The fixation of the ejector button of first position, the other end and container base of seesaw are in after one end compression spring of the seesaw Bottom connection touch, when pressing ejector button and being at the second place, one end of seesaw compression spring is released, and spring is released Put elastic force and promote one end of seesaw, and tilt container base.

4. metal bath according to claim 1, further comprise reagent thermal insulating seat, cooling piece, heat-conducting block, insulation pressing plate with And radiator；

Described insulation pressing plate is located above radiator, the through hole being provided with pressing plate for being put into heat-conducting block is incubated, wherein often One heat-conducting block is individually fixed at the top of a radiator, and the heat-conducting block lower surface is close on the top surface of radiator；

Described cooling piece is arranged on heat-conducting block, and the lower surface of cooling piece and the upper surface of heat-conducting block fit, cooling piece Upper surface and the lower surface of the reagent thermal insulating seat fit；

Described metal bath also includes adjusting means, and the adjusting means is used to form bullet between the insulation pressing plate and radiator Property connection.

5. metal bath according to claim 4, it is characterised in that：The adjusting means includes O-ring, limited post and tune Save screw；

It is provided with multiple stepped holes on the insulation pressing plate, multiple screw holes is provided with corresponding on the top surface of the radiator, Described O-ring has through hole, the regulation spiral shell on the step in the stepped hole of insulation pressing plate in the middle part of described limited post Silk is passed through from the through hole of limited post, and the lower end of set screw is adapted with the screw hole of radiator, the screw of the set screw Head is pressed on described O-ring.

6. metal bath according to claim 5, it is characterised in that：Stepped hole on the insulation pressing plate by the first blind hole and The first through hole run through on the first blind via bottom is formed, and the aperture of the first blind hole is more than the aperture of first through hole.

7. metal bath according to claim 6, it is characterised in that：Described limited post is arranged in first through hole, described The depth of first through hole is a, and the line footpath of the O-ring is b, and the maximum compression deformation quantity of O-ring is c, the height of the limited post Spend for d, wherein d=(b-c)+a.

8. metal bath according to claim 6, it is characterised in that：Described adjusting means also includes pad, in pad Portion has through hole, and the set screw is passed through from the through hole of pad, and described pad is pressed on O-ring;

Described limited post is arranged in first through hole, and the depth of the first through hole is a, and the line footpath of the O-ring is b, O-shaped The maximum compression deformation quantity of circle is c, and the thickness of the pad is e, and the height of the limited post is d, wherein d=(b-c)+a+e.

9. metal bath according to claim 4, it is characterised in that：Described reagent thermal insulating seat includes thermal insulation board, it is described every Hot plate is provided with the through hole for being put into the cooling piece above insulation pressing plate in the middle part of thermal insulation board.

10. metal bath according to claim 9, it is characterised in that：Described reagent thermal insulating seat also includes heating plate and guarantor Warm block；

The first groove to cave inward is provided with the bottom surface of the heat insulating block, it is recessed that described thermal insulation board is arranged on described first In groove；It is provided with the second groove to cave inward on the bottom surface of first groove, described heating plate is arranged on described the In two grooves, the lower surface of heating plate and the upper surface of cooling piece and the upper surface of thermal insulation board are fitted, and described reagent is protected Warm seat also includes container base, and the through hole for being put into container base is additionally provided with heat insulating block, and the through hole is recessed through second The bottom surface of groove, the upper surface of the heating plate and the lower surface of container base fit.