CN213632912U - Total organic carbon sample drip washing device and suction filtration structure thereof - Google Patents
Total organic carbon sample drip washing device and suction filtration structure thereof Download PDFInfo
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- CN213632912U CN213632912U CN202022187611.5U CN202022187611U CN213632912U CN 213632912 U CN213632912 U CN 213632912U CN 202022187611 U CN202022187611 U CN 202022187611U CN 213632912 U CN213632912 U CN 213632912U
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Abstract
The utility model relates to a total organic carbon sample leaching device and a leaching structure thereof, wherein the leaching structure comprises a negative pressure container, the negative pressure container is provided with an air exhaust opening used for being connected with a negative pressure pumping system, and is also provided with a crucible mounting hole used for mounting a permeable crucible; the crucible mounting hole comprises a conical hole section which is back to one end of the inner cavity of the negative pressure container, and the diameter of the conical hole section is large outside and small inside; the suction filtration structure also comprises a conical sealing plug, and the conical sealing plug is adapted to be placed in the crucible mounting hole and matched with the conical hole section to realize sealing; the conical sealing plug is internally provided with a crucible perforation communicated with the inside and the outside of the negative pressure container, the wall of the crucible perforation is provided with an annular bulge which protrudes inwards in the radial direction, and the annular bulge is used for being in sealing fit with the periphery of the permeable crucible. Compared with an O-shaped sealing ring, the contact area between the conical sealing plug and the crucible mounting hole is larger, and the sealing effect is better.
Description
Technical Field
The utility model relates to a total organic carbon sample drip washing device and suction filtration structure thereof.
Background
The method for measuring the content of the total organic carbon in the sedimentary rock is a simple and effective method for expressing the content of organic matters in the rock by using carbon elements, the analysis of the total organic carbon in the sedimentary rock is one of necessary items in an organic geochemistry laboratory, the content of the total organic carbon is an important index for evaluating a hydrocarbon source rock, and the number of general analysis samples is large.
The analysis of the total organic carbon in the sedimentary rock comprises two parts of sample pretreatment and instrument detection. The pretreatment of the sample relates to the working procedures of sample selection, crushing, weighing, acidification, leaching, drying and the like. Determination of Total organic carbon in sedimentary rock 5.4 Wash-sample Specifications in GB/T19145-2003: and (3) placing the acid-treated sample in a water-permeable crucible on a suction filter, washing the sample to be neutral by using distilled water, placing the washed sample in a constant-temperature drying box with the temperature not higher than 80 ℃ for drying, and then carrying out instrument analysis.
Present existing total organic carbon sample drip washing device is shown as chinese utility model patent that the publication number of granting is CN205157284U, including the suction filtration structure and arrange the drip washing structure in suction filtration structure top, the suction filtration structure includes vacuum pump, negative pressure container (be the suction flask in this patent promptly), has seted up the extraction opening on the negative pressure container for connect negative pressure suction system, negative pressure suction system includes the vacuum pump. The leaching structure comprises a burette positioned above the suction flask, and also comprises a water storage tank and a water inlet pipe which supply water to the burette. When the device is used, the water-permeable crucible containing the acid-treated sample is sleeved with the O-shaped sealing ring, then the O-shaped sealing ring is placed in the mouth of the conical flask of the filter flask, so that the O-shaped sealing ring and the mouth of the conical flask are sealed, and the vacuum pump is used for pumping air to the filter flask; dripping water into the water-permeable crucible through a burette to drip and wash the sample; and taking down the permeable crucible after leaching.
When the existing total organic carbon sample leaching device is used, the O-shaped sealing ring is sleeved outside the water-permeable crucible, and the O-shaped sealing ring radially expands to realize good sealing with the water-permeable crucible, so that the water-permeable crucible is convenient to take down. However, the seal between the "O" ring and the bottle mouth of the filter flask is not reliable because: the sealing area of the O-shaped sealing ring is small, and when the precision of the mouth of the filter flask is low, a ventilation gap is easily formed between the O-shaped sealing ring and the mouth of the filter flask; moreover, when the permeable crucible is placed, if the permeable crucible is inclined, the O-shaped sealing ring is also inclined along with the permeable crucible, so that a ventilation gap is easy to be formed between the O-shaped sealing ring and the mouth of the filter flask, and the sealing performance cannot be ensured. When poor leakproofness leads to the suction filtration easily between "O" type sealing washer and the suction flask bottleneck, outside air enters into the suction flask from ventilative clearance department, influences the effect and the efficiency of suction filtration.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a suction filtration structure of a total organic carbon sample leaching device, which aims to solve the technical problem that the sealing performance between a permeable crucible and a suction filtration container is poor to influence the suction filtration effect and efficiency in the prior art; still provide a total organic carbon sample drip washing device to solve above-mentioned technical problem.
In order to achieve the above object, the utility model discloses total organic carbon sample drip washing device's suction filtration structure's technical scheme is: the utility model provides a suction filtration structure of total organic carbon sample drip washing device, includes:
the negative pressure container is provided with an air suction opening used for being connected with a negative pressure suction system and a crucible mounting hole used for mounting a permeable crucible;
the crucible mounting hole comprises a conical hole section which is back to one end of the inner cavity of the negative pressure container, and the diameter of the conical hole section is large outside and small inside;
the suction filtration structure also comprises a conical sealing plug, and the conical sealing plug is adapted to be placed in the crucible mounting hole and matched with the conical hole section to realize sealing;
the conical sealing plug is internally provided with a crucible perforation communicated with the inside and the outside of the negative pressure container, the wall of the crucible perforation is provided with an annular bulge which protrudes inwards in the radial direction, and the annular bulge is used for being in sealing fit with the periphery of the permeable crucible.
The utility model has the advantages that: compared with an O-shaped sealing ring, the contact area between the conical sealing plug and the crucible mounting hole is larger, and the sealing effect is better. The crucible mounting hole includes the taper hole section, and the taper hole section realizes sealed with the cooperation of toper sealing plug, and during normal work, the toper sealing plug receives the negative pressure suction effect and removes towards the path one end of taper hole section, and it is more firm to remove the sealed between in-process toper sealing plug and the taper hole section. The conical sealing plug is matched with the water-permeable crucible through the annular protrusion, so that the conical sealing plug and the water-permeable crucible are sealed, compared with a mode that the whole crucible perforation in the conical sealing plug is in contact sealing with the water-permeable crucible, the contact area between the annular protrusion and the water-permeable crucible is smaller, and the friction resistance applied when the water-permeable crucible is put into the conical sealing plug and taken out from the conical sealing plug is smaller, so that the conical sealing plug is convenient to take and place. The utility model provides a suction filtration structure through setting up the toper sealing plug, has both guaranteed the sealing reliability between toper sealing plug and the negative pressure container, prevents the gas leakage phenomenon, improves the effect and the efficiency of suction filtration, has also made things convenient for getting of the crucible that permeates water to put.
As a further preferred solution, the annular protrusions are arranged at least two times at intervals along the axial direction of the conical sealing plug.
The effect of this scheme lies in, through setting up at least twice annular arch, can compromise the convenience that the crucible of permeating water got and put and sealed reliability.
As a further optimized scheme, the crucible mounting hole comprises the taper hole section and a straight hole section close to the inner cavity of the negative pressure container.
The effect of this scheme lies in, compares with the whole mode that is the taper hole section of crucible mounting hole, sets up the straight hole section back, and the internal diameter of the drill way with negative pressure container inner chamber intercommunication is great in the crucible mounting hole, and the leaching water of being convenient for enters into the inner chamber of negative pressure container through this drill way.
As a further optimized scheme, the negative pressure container is a negative pressure suction filtration box, a plurality of crucible mounting holes are formed in the negative pressure suction filtration box, and the conical sealing plug is arranged in each crucible mounting hole.
The effect of this scheme lies in, sets up a plurality of crucible mounting holes on negative pressure suction filtration case, can carry out the suction filtration to a plurality of crucibles that permeate water simultaneously, and in addition, a plurality of crucible mounting hole equipartitions are put on negative pressure suction filtration case, also avoid appearing the mixed and disorderly condition of workstation.
As a further optimized scheme, a communication valve is arranged on the negative pressure suction filtration box and is used for opening before the permeable crucible is taken out so that external air can enter the negative pressure suction filtration box.
The effect of this scheme lies in, opens the intercommunication valve after the suction filtration is accomplished, and outside air can enter into the negative pressure suction filtration case, makes the inside and outside isobaric that keeps of negative pressure suction filtration case, perhaps reduces pressure differential, the taking out of convenient permeable crucible.
The utility model discloses total organic carbon sample drip washing device's technical scheme is: a total organic carbon sample elution device, comprising:
the suction filtration structure comprises a negative pressure container, the negative pressure container is provided with an air suction opening used for being connected with a negative pressure suction system, and a crucible mounting hole used for mounting a permeable crucible;
the leaching structure is used for supplying water into the permeable crucible to leach the sample;
the crucible mounting hole comprises a conical hole section which is back to one end of the inner cavity of the negative pressure container, and the diameter of the conical hole section is large outside and small inside;
the suction filtration structure also comprises a conical sealing plug, and the conical sealing plug is adapted to be placed in the crucible mounting hole and matched with the conical hole section to realize sealing;
the conical sealing plug is internally provided with a crucible perforation communicated with the inside and the outside of the negative pressure container, the wall of the crucible perforation is provided with an annular bulge which protrudes inwards in the radial direction, and the annular bulge is used for being in sealing fit with the periphery of the permeable crucible.
The utility model has the advantages that: compared with an O-shaped sealing ring, the contact area between the conical sealing plug and the crucible mounting hole is larger, and the sealing effect is better. The crucible mounting hole includes the taper hole section, and the taper hole section realizes sealed with the cooperation of toper sealing plug, and during normal work, the toper sealing plug receives the negative pressure suction effect and removes towards the path one end of taper hole section, and it is more firm to remove the sealed between in-process toper sealing plug and the taper hole section. The conical sealing plug is matched with the water-permeable crucible through the annular protrusion, so that the conical sealing plug and the water-permeable crucible are sealed, compared with a mode that the whole crucible perforation in the conical sealing plug is in contact sealing with the water-permeable crucible, the contact area between the annular protrusion and the water-permeable crucible is smaller, and the friction resistance applied when the water-permeable crucible is put into the conical sealing plug and taken out from the conical sealing plug is smaller, so that the conical sealing plug is convenient to take and place. The utility model provides a suction filtration structure through setting up the toper sealing plug, has both guaranteed the sealing reliability between toper sealing plug and the negative pressure container, prevents the gas leakage phenomenon, improves the effect and the efficiency of suction filtration, has also made things convenient for getting of the crucible that permeates water to put.
As a further preferred solution, the annular protrusions are arranged at least two times at intervals along the axial direction of the conical sealing plug.
The effect of this scheme lies in, through setting up at least twice annular arch, can compromise the convenience that the crucible of permeating water got and put and sealed reliability.
As a further optimized scheme, the crucible mounting hole comprises the taper hole section and a straight hole section close to the inner cavity of the negative pressure container.
The effect of this scheme lies in, compares with the whole mode that is the taper hole section of crucible mounting hole, sets up the straight hole section back, and the internal diameter of the drill way with negative pressure container inner chamber intercommunication is great in the crucible mounting hole, and the leaching water of being convenient for enters into the inner chamber of negative pressure container through this drill way.
As a further optimized scheme, the negative pressure container is a negative pressure suction filtration box, a plurality of crucible mounting holes are formed in the negative pressure suction filtration box, and the conical sealing plug is arranged in each crucible mounting hole.
The effect of this scheme lies in, sets up a plurality of crucible mounting holes on negative pressure suction filtration case, can carry out the suction filtration to a plurality of crucibles that permeate water simultaneously, and in addition, a plurality of crucible mounting hole equipartitions are put on negative pressure suction filtration case, also avoid appearing the mixed and disorderly condition of workstation.
As a further optimized scheme, a communication valve is arranged on the negative pressure suction filtration box and is used for opening before the permeable crucible is taken out so that external air can enter the negative pressure suction filtration box.
The effect of this scheme lies in, opens the intercommunication valve after the suction filtration is accomplished, and outside air can enter into the negative pressure suction filtration case, makes the inside and outside isobaric that keeps of negative pressure suction filtration case, perhaps reduces pressure differential, the taking out of convenient permeable crucible.
Drawings
Fig. 1 is a schematic diagram of a leaching structure of the total organic carbon sample leaching device of the present invention, which is shown in example 1 (in order to show the crucible mounting holes, one of the permeable crucibles is removed);
FIG. 2 is a top view of FIG. 1;
fig. 3 is a schematic view of the tapered sealing plug of fig. 1 and 2;
FIG. 4 is a top view of FIG. 3;
description of reference numerals:
101-negative pressure suction filtration box;
102-a box body;
103-box cover;
104-a screw;
105-an inner cavity of a suction filtration box;
106-crucible mounting hole;
107-a cone hole section;
108-straight hole section;
109-sealing ring;
110-a water drain valve;
a 111-communication valve;
112-tapered sealing plug;
1121-perforating the crucible;
1122-annular projection;
113-a connection joint;
114-suction filtration buffer bottle;
115-vacuum pump;
116-Water permeable crucible.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
The utility model discloses a total organic carbon sample drip washing device's suction filtration structure's embodiment 1:
as shown in fig. 1 to 4, the suction filtration structure of the total organic carbon sample leaching device is referred to as a suction filtration structure hereinafter, and the suction filtration structure is used for fixing the water permeable crucible, so that the water seepage speed of the water permeable crucible is increased, and the water seepage efficiency of the water permeable crucible is improved.
The suction filtration structure integrally comprises a negative pressure suction filtration box 101, an air suction opening is formed in the negative pressure suction filtration box 101, the air suction opening is connected with a negative pressure suction system when in use, a crucible mounting hole 106 is formed in the negative pressure suction filtration box 101, and the crucible mounting hole 106 is communicated with a suction filtration box inner cavity 105 of the negative pressure suction filtration box 101. When in use, the water permeable crucible 116 is placed in the crucible mounting hole 106 and is in sealing fit with the wall of the crucible mounting hole 106, and the permeation of water in the water permeable crucible 116 is accelerated under the action of the difference between the internal pressure and the external pressure.
As shown in fig. 1 and 2, the negative pressure suction filtration box 101 includes a box body 102 and a box cover 103, wherein the box body 102 is open at the top, and the box cover 103 closes the opening of the box body 102, thereby forming a closed suction filtration box inner cavity 105. In order to ensure the tightness of the inner cavity 105 of the suction filtration box, grooves are formed above the box body 102 and below the box cover 103, sealing rings 109 are placed in the grooves, and when the box body 102 and the box cover 103 are installed together, the sealing rings 109 are extruded to form the closed inner cavity 105 of the suction filtration box. The box body 102 and the box cover 103 are square, and the box body 102 and the box cover 103 are fixedly installed together through screws 104, specifically, as shown in fig. 2, the screws 104 are four and are respectively arranged at four corners of the box cover 103.
Install the attach fitting 113 of intercommunication suction filtration case inner chamber 105 on box 102, the negative pressure suction system of this embodiment include with suction filtration buffer bottle 114 and vacuum pump 115, suction filtration buffer bottle 114 passes through the pipeline and links to each other with attach fitting 113, vacuum pump 115 passes through the pipeline and links to each other with suction filtration buffer bottle 114. As shown in fig. 1, a pipe is inserted into the stopper at the upper end of the filtration buffer bottle 114, and the gas flows downward into the filtration buffer bottle 114. The effect that suction filtration buffer bottle 114 played here can realize gas-liquid separation, after moisture gets into suction filtration buffer bottle 114, collides with suction filtration buffer bottle 114 inner wall, realizes gas-liquid separation, prevents that moisture from getting into vacuum pump 115 in, and damages vacuum pump 115.
As shown in fig. 1 and 2, a drain valve 110 and a communication valve 111 are mounted on the tank 102, the drain valve 110 and the communication valve 111 are both communicated with the suction filtration tank cavity 105, specifically, two pipes may be mounted on the tank 102, and the drain valve 110 and the communication valve 111 are mounted on the corresponding pipes. Wherein, the valve 110 that drains is located the bottom of box 102, can discharge the ponding in suction filtration case inner chamber 105, prevents that ponding is too much in suction filtration case inner chamber 105 and makes vacuum pump 115 draw water. When the communicating valve 111 is used, the vacuum pump 115 is started to perform air extraction, the communicating valve 111 is closed, and the communicating valve 111 is opened when the permeable crucible 116 needs to be taken out after the air extraction, so that the phenomenon that the permeable crucible 116 cannot be taken down due to overlarge pressure difference between two sides of the permeable crucible 116 is avoided.
The structure of the crucible mounting hole 106 is as shown in fig. 1, and the crucible mounting hole 106 is formed in the box cover 103 and is communicated with the inner cavity 105 of the suction filtration box. The crucible mounting hole 106 comprises a taper hole section 107 at one end far away from the inner cavity 105 of the suction filtration box and a straight hole section 108 at one end close to the inner cavity 105 of the suction filtration box, and the taper hole section 107 is used for being matched with and mounting a water-permeable crucible 116.
In order to ensure the sealing fit between the water-permeable crucible 116 and the taper hole section 107, a tapered sealing plug 112 is sleeved outside the water-permeable crucible 116, the structure of the tapered sealing plug 112 is shown in fig. 3 and 4, and the tapered sealing plug 112 is made of an elastic material and has a certain deformation. The tapered sealing plug 112 is tapered on the whole periphery, an axially through crucible through hole 1121 is formed in the tapered sealing plug 112, the crucible through hole 1121 is a straight hole, an annular protrusion 1122 protrudes radially inwards from the inner wall of the crucible through hole 1121, and two annular protrusions 1122 are arranged at intervals along the axial direction of the tapered sealing plug 112. After the crucible 116 is inserted into the crucible through hole 1121, the annular protrusion 1122 is deformed by extrusion, thereby sealing the crucible 116. Because the contact area between the annular protrusion 1122 and the water-permeable crucible 116 is small, the force for placing the water-permeable crucible 116 into the conical sealing plug 112 and taking the water-permeable crucible out of the conical sealing plug 112 is small, and the water-permeable crucible is convenient to take and place. In addition, since the outer wall of the crucible 116 is rough and the area of the annular protrusion 1122 is small, the amount of deformation is large, and the crucible 116 can be reliably sealed.
As shown in fig. 1 and 2, eight crucible mounting holes 106 are provided in the embodiment, and are arranged on the box cover 103 in two rows, so that samples in eight water-permeable crucibles 116 can be washed simultaneously, a plurality of water-permeable crucibles 116 share one suction filter box inner cavity 105, the use is convenient, and the water-permeable crucibles 116 are arranged in order, thereby avoiding the phenomena of unstable arrangement, messy work tables and the like.
The utility model discloses a use: closing the water drain valve 110 and the communication valve 111, inserting the water-permeable crucible 116 containing the acid-treated sample into the conical sealing plug 112, then placing the water-permeable crucible into the crucible mounting hole 106, starting the vacuum pump 115, injecting distilled water into the water-permeable crucible 116 containing the acid-treated sample to clean the sample, enabling the cleaned water to permeate through the water-permeable crucible 116 and flow into the inner cavity 105 of the suction filtration box, and enabling the vacuum pump 115 to accelerate the permeation of the water in a negative pressure environment generated in the inner cavity 105 of the suction filtration box. The vacuum pump 115 is stopped when the permeable crucible 116 is neutral as detected by pH paper. And (3) opening the communication valve 111 to enable outside air to enter the inner cavity 105 of the suction filtration box, taking down the permeable crucible 116 filled with the sample, drying and then measuring the total organic carbon. During the operation of the vacuum pump 115, a downward suction force is applied to the tapered sealing plug 112, and the tapered sealing plug 112 is more firmly sealed with the tapered bore section 107 when moving downward.
It should be noted that, in this embodiment, eight crucible mounting holes are formed in the negative pressure suction filtration box, and when the number of the permeable crucibles is smaller than that of the crucible mounting holes, the solid conical rubber plug is used to plug the unused crucible mounting holes, so as to rinse the samples in other permeable crucibles.
In this embodiment, the negative pressure suction filtration box is used as a structure for providing a negative pressure inner cavity, so as to form a negative pressure container, and an opening provided with a connection joint thereon forms an air suction opening connected with a negative pressure suction system.
The utility model discloses total organic carbon sample drip washing device's suction filtration structure's embodiment 2:
in example 1, a communication valve was provided in the negative pressure suction filtration tank. In this embodiment, can cancel the intercommunication valve, after canceling the intercommunication valve, when needing to take out the crucible that permeates water, the experimenter needs to accomplish the work of taking out with great power.
The utility model discloses total organic carbon sample drip washing device's suction filtration structure's embodiment 3:
in example 1, eight crucible mounting holes are provided in the negative pressure suction filtration box. In this embodiment, the number of crucible mounting holes can be increased or decreased, and the arrangement mode can be changed according to the shape and the operation habit of the negative pressure suction filtration box.
The utility model discloses total organic carbon sample drip washing device's suction filtration structure's embodiment 4:
in example 1, the negative pressure container was a negative pressure suction filtration tank. In this embodiment, the negative pressure container may be a filter flask or the like, and there may be only one crucible mounting hole on the negative pressure container.
The utility model discloses total organic carbon sample drip washing device's suction filtration structure's embodiment 5:
in example 1, the crucible mounting hole includes a tapered hole section and also includes a straight hole section. In this embodiment, the crucible mounting hole may only include a taper hole section, that is, the crucible mounting hole itself is a taper hole.
The utility model discloses total organic carbon sample drip washing device's suction filtration structure's embodiment 6:
in embodiment 1, the number of annular protrusions in the conical sealing plug is two. In this embodiment, the number of the annular protrusions may be increased according to actual conditions, or only one annular protrusion may be provided.
The utility model discloses total organic carbon sample drip washing device's suction filtration structure's embodiment 7:
in example 1, the negative pressure suction system comprises a suction filtration buffer bottle and a vacuum pump. In this embodiment, the negative pressure suction system may only include the vacuum pump, or may replace the suction filtration buffer bottle with the gas-water separator.
The utility model discloses total organic carbon sample drip washing device's concrete embodiment:
the total organic carbon sample leaching device comprises a leaching structure and a leaching structure, the leaching structure is consistent with the structures of the embodiments in the leaching structure of the total organic carbon sample leaching device, and the structures are not repeated. The washing arrangement is used to supply water to the water permeable crucible to wash the sample, and may be as in the prior art as cited in the background, or may of course be supplied directly by means of a common conduit.
The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a suction filtration structure of total organic carbon sample drip washing device, includes:
the negative pressure container is provided with an air suction opening used for being connected with a negative pressure suction system and a crucible mounting hole used for mounting a permeable crucible;
the method is characterized in that: the crucible mounting hole comprises a conical hole section which is back to one end of the inner cavity of the negative pressure container, and the diameter of the conical hole section is large outside and small inside;
the suction filtration structure also comprises a conical sealing plug, and the conical sealing plug is adapted to be placed in the crucible mounting hole and matched with the conical hole section to realize sealing;
the conical sealing plug is internally provided with a crucible perforation communicated with the inside and the outside of the negative pressure container, the wall of the crucible perforation is provided with an annular bulge which protrudes inwards in the radial direction, and the annular bulge is used for being in sealing fit with the periphery of the permeable crucible.
2. The suction filtration structure of a total organic carbon sample leaching device according to claim 1, wherein: at least two annular bulges are arranged along the axial direction of the conical sealing plug at intervals.
3. The suction filtration structure of a total organic carbon sample leaching device according to claim 1, wherein: the crucible mounting hole comprises the taper hole section and a straight hole section close to the inner cavity of the negative pressure container.
4. The suction filtration structure of a total organic carbon sample leaching device according to claim 1, 2 or 3, wherein: the negative pressure container is a negative pressure suction filtration box, a plurality of crucible mounting holes are formed in the negative pressure suction filtration box, and the conical sealing plug is arranged in each crucible mounting hole.
5. The suction filtration structure of a total organic carbon sample leaching device according to claim 4, wherein: and the negative pressure suction filtration box is provided with a communicating valve, and the communicating valve is opened before the permeable crucible is taken out so as to allow external air to enter the negative pressure suction filtration box.
6. A total organic carbon sample elution device, comprising:
the suction filtration structure comprises a negative pressure container, the negative pressure container is provided with an air suction opening used for being connected with a negative pressure suction system, and a crucible mounting hole used for mounting a permeable crucible;
the leaching structure is used for supplying water into the permeable crucible to leach the sample;
the method is characterized in that: the crucible mounting hole comprises a conical hole section which is back to one end of the inner cavity of the negative pressure container, and the diameter of the conical hole section is large outside and small inside;
the suction filtration structure also comprises a conical sealing plug, and the conical sealing plug is adapted to be placed in the crucible mounting hole and matched with the conical hole section to realize sealing;
the conical sealing plug is internally provided with a crucible perforation communicated with the inside and the outside of the negative pressure container, the wall of the crucible perforation is provided with an annular bulge which protrudes inwards in the radial direction, and the annular bulge is used for being in sealing fit with the periphery of the permeable crucible.
7. The total organic carbon sample elution device according to claim 6, wherein: at least two annular bulges are arranged along the axial direction of the conical sealing plug at intervals.
8. The total organic carbon sample elution device according to claim 6, wherein: the crucible mounting hole comprises the taper hole section and a straight hole section close to the inner cavity of the negative pressure container.
9. The total organic carbon sample elution device according to claim 6, 7 or 8, wherein: the negative pressure container is a negative pressure suction filtration box, a plurality of crucible mounting holes are formed in the negative pressure suction filtration box, and the conical sealing plug is arranged in each crucible mounting hole.
10. The total organic carbon sample elution device according to claim 9, wherein: and the negative pressure suction filtration box is provided with a communicating valve, and the communicating valve is opened before the permeable crucible is taken out so as to allow external air to enter the negative pressure suction filtration box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022187611.5U CN213632912U (en) | 2020-09-29 | 2020-09-29 | Total organic carbon sample drip washing device and suction filtration structure thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022187611.5U CN213632912U (en) | 2020-09-29 | 2020-09-29 | Total organic carbon sample drip washing device and suction filtration structure thereof |
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| CN213632912U true CN213632912U (en) | 2021-07-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114832755A (en) * | 2022-05-07 | 2022-08-02 | 中国石油化工股份有限公司 | Automatic pretreatment device for total organic carbon in shale and working method |
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2020
- 2020-09-29 CN CN202022187611.5U patent/CN213632912U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114832755A (en) * | 2022-05-07 | 2022-08-02 | 中国石油化工股份有限公司 | Automatic pretreatment device for total organic carbon in shale and working method |
| CN114832755B (en) * | 2022-05-07 | 2023-09-22 | 中国石油化工股份有限公司 | Automatic pretreatment device for total organic carbon in shale and working method |
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