CN211367502U - Peroxide value detection pretreatment equipment - Google Patents
Peroxide value detection pretreatment equipment Download PDFInfo
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- CN211367502U CN211367502U CN201922136099.9U CN201922136099U CN211367502U CN 211367502 U CN211367502 U CN 211367502U CN 201922136099 U CN201922136099 U CN 201922136099U CN 211367502 U CN211367502 U CN 211367502U
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Abstract
The utility model relates to a food detection technology field, concretely relates to peroxide number detects former treatment facility, include: a base; the liquid storage bottle is used for storing a sample to be filtered; the liquid receiving bottle is used for receiving the filtered sample; the filter device is used for containing a drying agent, and an inlet is communicated with the liquid storage bottle and an outlet is communicated with the liquid receiving bottle; the filtering device comprises at least two stages of filtering units which are connected in sequence, and the samples are subjected to at least twice dehydration; one end of the filtering device close to the liquid receiving bottle is provided with a connector connected with the vacuum pumping device. Has the advantages that: the negative pressure can be utilized to enable the sample to automatically flow from the liquid storage bottle, pass through the filtering device and finally flow into the liquid receiving bottle, so that the filtering efficiency is improved, the sample is prevented from being exposed and oxidized for a long time, and the accuracy of the experiment is ensured; the one shot operation can carry out twice at least dewatering to the sample, and the dewatering is more thorough, does not need the repeated filtering operation that carries on, not only can save time, can avoid the laboratory technician to stick in front of filter equipment for a long time moreover, consequently can ensure laboratory technician's personal safety.
Description
Technical Field
The utility model relates to a food detection technology field, concretely relates to peroxide value detects former treatment facility.
Background
The peroxide value is an index indicating the degree of oxidation of fats and oils, fatty acids, and the like, and is used to indicate whether or not a sample is deteriorated by oxidation, and the quality and the degree of deterioration of foods prepared from fats and oils can be determined by detecting the peroxide value.
According to the national standard, the first and second methods for determining the peroxide value in food involve the pretreatment of samples, which require leaching, filtration and rotary evaporation, wherein the atmospheric filtration often cannot rapidly filter the samples due to different sample states, resulting in long-term exposure to oxidation of the samples. In addition, because the laboratory technician operates differently, once filter often can not thoroughly get rid of impurity and moisture, need repeat the filtration, just so consume longer time, the laboratory technician need stick to in the front of filter equipment for a long time, and the volatilization of organic reagent is harmful to healthy, consequently needs one kind very much to promote experimental efficiency, guarantees the experiment accuracy to can ensure the peroxide value of laboratory technician personal safety and detect preceding processing apparatus.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can promote experimental efficiency, guarantee the experiment accuracy to can ensure laboratory technician personal safety's peroxide value detection pre-processing equipment.
In order to achieve the above object, the utility model provides an adopt following technical scheme:
a peroxide value detection pretreatment apparatus comprising:
a base;
the liquid storage bottle is arranged on the base and used for storing a sample to be filtered;
the liquid receiving bottle is arranged on the base and is used for receiving the filtered sample;
the inlet of the filtering device is communicated with the liquid storage bottle, the outlet of the filtering device is communicated with the liquid receiving bottle, and the filtering device is used for containing a drying agent so as to remove water from the sample passing through the filtering device in a convection manner;
the filtering device comprises at least two stages of filtering units which are arranged on a base and connected in sequence, so as to remove water from a sample at least twice;
and one end of the liquid receiving bottle or the filtering device, which is close to the liquid receiving bottle, is provided with an interface for connecting with a vacuum pumping device, so that a sample to be filtered automatically flows through the filtering device from the liquid storage bottle and finally flows into the liquid receiving bottle under the action of negative pressure.
The beneficial effects of the above technical scheme are that: because the interface used for being connected with the vacuumizing device is arranged at one end, close to the liquid receiving bottle, of the liquid receiving bottle or the filtering device, when the vacuumizing device is started, a sample to be filtered automatically flows through the filtering device from the liquid storage bottle and finally flows into the liquid receiving bottle by utilizing the negative pressure effect, the filtering efficiency is improved, the sample is prevented from being exposed and oxidized for a long time, and the experimental accuracy can be ensured; in addition, because filter equipment is including setting up the at least two-stage filter unit that connects gradually on the base, once only operation just can carry out twice at least dewatering to the sample like this, and the dewatering is more thorough, does not need repeated filtering operation, not only can save time, can avoid the laboratory technician to stick in front of filter equipment for a long time moreover, consequently can ensure laboratory technician's personal safety.
Furthermore, in order to facilitate the setting and manufacturing of the filtering device and the loading of the drying agent, the filtering unit is a U-shaped filtering pipe with an upward pipe opening, the U-shaped filtering pipe is used for containing the drying agent, and the base is provided with an up-down moving device used for controlling the up-down movement of each U-shaped filtering pipe; the base includes the bottom plate and fixes the stand on the bottom plate, the top of stand is fixed with the casing, filter equipment still including fixing respectively on the casing be used for connecting U-shaped filter tube and stock solution bottle, U-shaped filter tube and connect the liquid bottle, and the connecting pipe of two adjacent U-shaped filter tubes, the U-shaped filter tube is sealed the butt joint with the connecting pipe that corresponds when reciprocating the in-process and having the rebound, in order to form the filter equipment's of sealed intercommunication butt joint station, the U-shaped filter tube still has when the rebound with the connecting pipe separation that corresponds, so that the separation station of drier is packed into in to the U-shaped filter tube.
Furthermore, in order to more conveniently load the drying agent into the U-shaped filter pipes, the pre-treatment equipment for peroxide value detection further comprises a horizontal moving device for controlling the horizontal movement of each U-shaped filter pipe, wherein the horizontal moving device is connected to and matched with the up-down moving device and is used for horizontally moving the U-shaped filter pipes to the outer sides of the base and the shell when the U-shaped filter pipes are positioned at the separation station so as to load the drying agent into the U-shaped filter pipes.
Furthermore, in order to facilitate the configuration and installation of the up-down moving device and the horizontal moving device, the up-down moving device is an upper hydraulic support rod and a lower hydraulic support rod, the bottom end of the upper hydraulic support rod is fixed on the bottom plate, the horizontal moving device comprises a horizontal moving plate and a horizontal hydraulic support rod installed on the horizontal moving plate, one end of the horizontal hydraulic support rod is fixed on the horizontal moving plate, the other end of the horizontal hydraulic support rod is fixedly connected with the top ends of the upper hydraulic support rod and the lower hydraulic support rod, and a fixing structure for fixing the U.
Further, in order to facilitate vacuum pumping, the vacuum pumping device is installed in the shell.
Furthermore, in order to be connected with the vacuumizing device conveniently, one end of the filtering device, which is close to the liquid receiving bottle, is provided with a joint, the joint comprises an outer pipe and an inner pipe arranged inside the outer pipe, one end of the outer pipe and one end of the inner pipe are fixedly and hermetically arranged, the other end of the outer pipe and the other end of the inner pipe are provided with intervals to form an annular space, the inner pipe is used for allowing a sample to enter the liquid receiving bottle, the outer pipe is provided with a connecting pipe communicated with the annular space, and the joint is.
Further, treat filterable sample for convenient preparation, the stock solution bottle includes upper portion stock solution bottle, lower part stock solution bottle and bottle lid, and upper portion stock solution bottle and lower part stock solution bottle pass through bottleneck clamp releasable connection and are in the same place, and the top at upper portion stock solution bottle is installed to the bottle lid, is provided with the stock solution bottle diaphragm in the upper portion stock solution bottle, and lower part stock solution bottle is connected with filter equipment.
Drawings
FIG. 1 is a perspective view of a pre-treatment apparatus for peroxide value detection according to the present invention;
FIG. 2 is a left side view of the pretreatment apparatus for peroxide value detection according to the present invention;
FIG. 3 is a right side view of the pretreatment apparatus for peroxide value detection according to the present invention;
FIG. 4 is a partial block diagram of the pre-processing peroxide level detection apparatus of FIG. 1 with the housing removed;
FIG. 5 is a connection structure diagram of a liquid storage bottle, a liquid receiving bottle and a middle filtering device in the pre-treatment equipment for peroxide value detection of the present invention;
FIG. 6 is an exploded view of a liquid storage bottle of the pretreatment equipment for peroxide value detection according to the present invention;
FIG. 7 is an exploded view of the rear connection tube and the liquid-receiving bottle shown in FIG. 5;
FIG. 8 is a block diagram of the adapter of FIGS. 5 and 7;
FIG. 9 is an exploded view of the U-shaped filter tube and the intermediate connection tube of FIG. 5;
FIG. 10 is a connection structure diagram of the horizontal movement device and the U-shaped filter tube in the pre-treatment device for peroxide value detection according to the present invention;
FIG. 11 is a side view of FIG. 10;
FIG. 12 is an exploded view of the partial structure of FIG. 10;
fig. 13 is a perspective view from below of fig. 10.
In the figure: 1-an operation panel; 2-a shell; 3-a display screen; 4-a vacuum pump; 5-liquid receiving bottle; 6-a bottom plate; 7-a moving mechanism; 70-a roller; 71-moving the plate; 72-a fixing frame; 73-handle screws; 74-hook plate; 75-fixed block; 76-upper and lower hydraulic stay bars; 761-coil spring; 77-front and rear hydraulic stays; 78-a nut; 79-roller shaft; 8-a liquid stop valve; 9-a filtration device; 91-head connection pipe; 92-a connecting rod; 93-U shaped filter tubes; 94-a fixation rod; 95-intermediate connecting pipe; 96-tail connection tube; 97-upper membrane; 98-lower septum; 10-upright post; 11-a liquid storage bottle; 111-bottle cap; 112-a gasket; 113-reservoir septum; 114-upper reservoir; 115-bottle mouth clamp; 116-lower reservoir; 12-the trachea; 13-a linker; 131-an outer tube; 132-an inner tube; 133-take over.
Detailed Description
An embodiment of the treatment equipment before detecting the peroxide value of the utility model is shown in figure 1, which comprises a base, wherein the base comprises a bottom plate 6 and four upright posts 10 fixed on the bottom plate 6, and a shell 2 is fixed at the top of the upright posts 10.
Referring to fig. 2, six liquid storage bottles 11 are arranged at the left end of the bottom plate 6 along the front-back direction, and the liquid storage bottles 11 are used for storing samples to be filtered. The structure of the liquid storage bottle 11 is shown in fig. 6, and comprises a bottle cap 111, an upper liquid storage bottle 114 and a lower liquid storage bottle 116, wherein the upper liquid storage bottle 114 and the lower liquid storage bottle 116 are detachably connected together through a bottle clamp 115, the bottle cap 111 is installed on the top of the upper liquid storage bottle 114, and a gasket 112 is arranged at the joint position of the upper liquid storage bottle 114 and the bottle cap 111. A liquid storage bottle diaphragm 113 is fixedly arranged in the upper liquid storage bottle 114, the liquid storage bottle diaphragm 113 is arranged at the lower position of the middle part in the upper liquid storage bottle 114, and the liquid storage bottle diaphragm 113 is provided with a sieve hole for liquid to permeate.
In addition, a telescopic device (not shown in the figure) connected with the bottle cap 111 is arranged in the housing 2, the telescopic device can be specifically an air cylinder, a hydraulic cylinder or an electric push rod, and the bottle cap 111 can be separated from the upper liquid storage bottle 114 under the control of the telescopic device, so that a sample to be filtered can be conveniently added into the upper liquid storage bottle 114.
As shown in fig. 3, six liquid receiving bottles 5 are arranged at the right end of the bottom plate 6 along the front-back direction, the liquid receiving bottles 5 correspond to the liquid storage bottles 11 one by one, and a filtering device 9 is connected between the corresponding liquid receiving bottles 5 and the corresponding liquid storage bottles 11. As shown in fig. 4 and 5, the filtering device 9 includes three stages of filtering units, which are spaced from each other and connected in sequence, the filtering unit in this embodiment is a U-shaped filtering pipe 93 with an upward pipe opening, and the U-shaped filtering pipe 93 is used for containing a drying agent. The filtering device 9 further comprises connecting pipes respectively fixed on the housing 2 for connecting the U-shaped filtering pipe 93 with the liquid storage bottle 11, the U-shaped filtering pipe 93 with the liquid receiving bottle 5, and two adjacent U-shaped filtering pipes 93, so that the connecting pipes comprise a head connecting pipe 91, two middle connecting pipes 95, and a tail connecting pipe 96, and each connecting pipe is fixed on the housing 2 through a fixing rod 94.
Referring to fig. 1, a portion of the head connection pipe 91 is located inside the bottom plate 6, and a liquid stop valve 8 is disposed on the head connection pipe 91 for controlling the on/off of the pipeline. Referring to fig. 9, a lower diaphragm 98 is fixedly disposed in each of the two vertical pipes of the U-shaped filtering pipe 93, the lower diaphragm 98 is disposed near the pipe opening of the U-shaped filtering pipe 93, an upper diaphragm 97 is fixedly disposed in each of the two vertical pipes of the middle connecting pipe 95, and the upper diaphragm 97 is disposed near the pipe opening of the middle connecting pipe 95, so that a narrow space is formed between the upper diaphragm and the lower diaphragm. The upper and lower membranes are provided with sieve pores which can be used for the desiccant to pass through and can also filter impurities in the sample.
In addition, an upper diaphragm is also fixedly arranged at the pipe orifice of the head connecting pipe 91 close to the U-shaped filtering pipe 93, and an upper diaphragm is also fixedly arranged at the pipe orifice of the tail connecting pipe 96 close to the U-shaped filtering pipe 93, that is, six groups of upper and lower diaphragms are arranged at the butt joint positions of the six groups of upper and lower pipe orifices respectively in fig. 5.
As shown in fig. 5 and 7, a connector 13 is fixed at the end of the tail connecting tube 96, the connector 13 is in sealed butt joint with the liquid receiving bottle 5, the liquid receiving bottle 5 is placed on the bottom plate 6, and an electric lifting device (not shown in the figure) for supporting and moving the liquid receiving bottle 5 up and down is arranged on the bottom plate 6, under the action of the electric lifting device, the liquid receiving bottle 5 is controlled to move up, so that the liquid receiving bottle 5 can be in sealed butt joint with the connector 13 to perform a filtration experiment, and a filtered sample is collected; the liquid receiving bottle 5 is controlled to move downwards, so that the liquid receiving bottle can be far away from the connector 13, and the liquid receiving bottle can be taken out conveniently.
The structure of the connector 13 is shown in fig. 8, the connector 13 includes an outer tube 131 and an inner tube 132 disposed inside the outer tube 131, the inner tube 132 is funnel-shaped, the top of the outer tube 131 and the inner tube 132 are fixedly sealed, the lower portion of the outer tube 131 and the lower portion of the inner tube 132 have a gap to form an annular space, the inner tube 132 is communicated with the tail connecting tube 96, the inner tube 132 is used for allowing a sample to enter the liquid receiving bottle 5, and the bottom end of the inner tube 132 protrudes out of. The outer tube 131 is provided with a nipple 133 communicating with the annular space.
As shown in fig. 1 and 3, a vacuum pumping device is installed in the housing 2, the vacuum pumping device in this embodiment is a vacuum pump 4, the vacuum pump 4 is connected to the connection pipe 133 of the connector 13 above each liquid receiving bottle 5 through the air pipe 12, so that the nozzle of the connection pipe 133 forms an interface connected to the vacuum pump 4. Specifically, the air pipe 12 includes a main air pipe and six branch air pipes, when the vacuum pump is turned on, the six liquid receiving bottles 5 can be simultaneously vacuumized, and under the action of negative pressure, the sample to be filtered in the liquid storage bottle 11 can automatically flow through the filtering device to remove water and filter and finally flow into the liquid receiving bottles 5.
Referring to fig. 1, 10 to 13, the pre-treatment equipment for peroxide value detection further includes a moving mechanism 9 for controlling up-down and back-and-forth movement of each U-shaped filter tube 93, the moving mechanism 9 is composed of an up-down moving device and a back-and-forth moving device (i.e., a horizontal moving device), the up-down moving device is an upper hydraulic support rod 76 whose bottom end is fixed on the bottom plate 6, the upper hydraulic support rod 76 and the lower hydraulic support rod 76 are two, and the top ends of the two upper hydraulic support rods 76 and the lower hydraulic support rod. The forward-backward moving device comprises a moving plate 71 and a front-back hydraulic brace 77 arranged on the moving plate 71, wherein one end of the front-back hydraulic brace 77 is fixed on the moving plate 71, and the other end of the front-back hydraulic brace is fixedly connected with a fixed block 75.
A fixing frame 72 is fixed on the side surface of the moving plate 71 through a handle screw 73 and a nut 78, and the fixing frame 72 is used for fixing the U-shaped filter pipe 93. A hook plate 74 is fixed to the moving plate 71, and the hook plate 74 is adapted to be engaged with a stop plate (not shown) provided on the bottom plate 6. The moving plate 71 is also provided with rollers 70 mounted via roller shafts 79, the rollers 70 engaging with rails (not shown) provided on the base plate 6 to facilitate the forward and backward movement of the forward and backward moving means along the rails.
As shown in fig. 1, the up-down moving device and the back-and-forth moving device are provided with two sets, which are respectively located at the left and right sides of the three U-shaped filter tubes 93, the left moving plate 71 fixes the leftmost column of U-shaped filter tubes 93, the right moving plate 71 fixes the rightmost column of U-shaped filter tubes 93, and the middle column of U-shaped filter tubes 93 is respectively and fixedly connected with the left column of U-shaped filter tubes and the right column of U-shaped filter tubes through the connecting rods 92 (all the connecting rods are not shown in fig. 4).
Due to the adoption of the hydraulic support rods, a downward force can be manually applied to the moving mechanism 7, the upper hydraulic support rods 76 and the lower hydraulic support rods 76 are compressed, the moving plate 71 drives the U-shaped filter pipes 93 to move downwards to be separated from the corresponding connecting pipes, at the moment, the U-shaped filter pipes 93 are positioned at the separation stations, then, the moving plate 71 is pulled forwards, the front hydraulic support rods 77 and the rear hydraulic support rods 77 extend, the moving plate 71 drives the U-shaped filter pipes 93 to move forwards to the outer sides of the base and the shell, at the moment, drying agents can be conveniently added into the U-shaped filter pipes 93, and in the process, the hook plates 74 can be matched with the baffle blocks to limit the limit moving positions of.
After the drying agent is filled, the moving plate 71 is pushed into the lower portion of the shell, and after the upper hydraulic support rod 76 and the lower hydraulic support rod 76 are reset, each U-shaped filter pipe 93 is in sealed butt joint with the corresponding connecting pipe, so that a filter device in sealed communication is formed, and at the moment, the U-shaped filter pipes 93 are located at a butt joint station. In addition, in order to facilitate the return of the upper and lower hydraulic support rods 76, a coil spring 761 is sleeved on the upper and lower hydraulic support rods 76.
In addition, as shown in fig. 1, an operation panel 1 and a display screen 3 are arranged on the housing 1, the operation panel 1 can control the start and stop of the vacuum pump 4, the expansion device connected with the bottle cap 111, and the jacking device supporting the liquid receiving bottle 5, and the display screen 3 can display corresponding parameters.
The utility model discloses well peroxide value detects former treatment facility's theory of operation is:
before the experiment, the lower liquid storage bottle 116 and the upper liquid storage bottle 114 are fixed through a bottle mouth clamp 115, a mouth grinding device is arranged in the middle, and vaseline can be coated before the liquid storage bottle is used, so that the sealing performance is improved. The bottle cap 111 is controlled to be lifted by a telescopic device, the rapid filtering filter paper is placed on the liquid storage bottle diaphragm 113 of the upper liquid storage bottle 114, the crushed sample is placed into the upper liquid storage bottle 114, petroleum ether with 2-3 times of the sample volume is added, after full mixing, the bottle cap 111 is tightly covered, and the oil in the sample is fully dissolved into the petroleum ether for more than 12 hours. The rapid filtering filter paper in the liquid storage bottle can allow liquid to permeate, and large sample residues can be left on the filter paper.
Then the moving plate 71 is pulled out while being pressed downwards, so that each U-shaped filter pipe 93 is pulled out, a proper amount of anhydrous sodium sulfate serving as a drying agent is filled into the U-shaped filter pipe 93, anhydrous sodium sulfate powder can reach the bottom of the U-shaped filter pipe 93 through sieve holes in the lower diaphragm 98, and then quick filter paper is placed on the lower diaphragm 98 of the U-shaped filter pipe 93, can be penetrated by liquid, but can be prevented from passing through, so that the situation that the anhydrous sodium sulfate powder is positioned in the U-shaped filter pipe 93 is ensured, and the water removal capacity of the U-shaped filter pipe 93 is ensured.
Then the U-shaped filter tube 93 is pushed into the lower part of the housing, and the U-shaped filter tube 93 is in sealing butt joint with the corresponding connecting tube above under the action of the upper and lower hydraulic struts 76 and the coil springs 761. And then controlling the jacking device to lift the liquid receiving bottle 5 to connect the liquid receiving bottle 5 with the joint 13, wherein the conical bottle mouth of the liquid receiving bottle 5 and the conical bottom of the outer tube 131 of the joint 13 are ground, vaseline can be coated before use, and the sealing property is improved.
Then the liquid stop valve 8 is opened, the vacuum pump 4 is started to vacuumize, under the action of negative pressure, petroleum ether liquid automatically flows through the filtering device through the liquid storage bottle and enters the liquid receiving bottle, and 3-stage filtering is completed.
After the experiment is finished, cleaning the equipment, lifting the bottle cap of the liquid storage bottle, taking down the bottle mouth clamp, and cleaning the upper liquid storage bottle; the U-shaped filter pipe is drawn out for cleaning; and finally, sealing the system, vacuumizing, cleaning the system for 3-5 times by using pure petroleum ether, and rotatably evaporating the petroleum ether waste liquid to obtain the pure petroleum ether so as to be recycled.
The utility model discloses a peroxide value detects preceding processing apparatus adopts the vacuum pump to produce the negative pressure and tests to arrange six rows of stock solution bottles, filter equipment and connect the liquid bottle to test simultaneously, can improve filtration efficiency, avoid the sample to expose the oxidation for a long time, can guarantee the experiment accuracy. In addition, the three-stage filtering unit is adopted, three-time dewatering and filtering can be carried out on the sample by one-time operation, the dewatering and filtering are thorough, the repeated filtering operation is not needed, the time can be saved, and the fact that a laboratory worker adheres to the filtering device for a long time can be avoided, so that the personal safety of the laboratory worker can be ensured.
In other embodiments of the peroxide value detection pretreatment apparatus, calcium chloride, alumina, or the like may be used as a drying agent.
In other embodiments of the peroxide value detection pretreatment apparatus, a compressor, a steam ejector, or the like may be used as the vacuum extractor.
In other embodiments of the pre-treatment equipment for peroxide value detection, the bottle cap may not be provided with a telescopic device connected with the bottle cap, but may be manually removed or installed.
In other embodiments of the pre-treatment equipment for peroxide value detection, a jacking device for supporting the liquid receiving bottle may not be arranged, the liquid receiving bottle is directly placed on the bottom plate and cannot be lifted, at this time, in order to ensure the connection sealing performance between the liquid receiving bottle and the filtering device, a base plate may be plugged at the bottom of the liquid receiving bottle, or an elastic pad is arranged on the bottom plate, the liquid receiving bottle can be placed in the elastic pad by pressing down the elastic pad, and the liquid receiving bottle moves upwards under the elastic action of the elastic pad after releasing hands to be in sealing butt joint with the filtering device.
In other embodiments of peroxide value detection pretreatment equipment, the stock solution bottle also can only include bottle and bottle lid, no longer divide into upper portion stock solution bottle and lower part stock solution bottle, can be outside equipment this moment, the dissolving process of grease in the completion sample, during the experiment, directly with the sample prepared add the stock solution bottle can.
In other embodiments of the pre-treatment equipment for peroxide value detection, the end of the filtering device is not provided with a joint, the tail connecting pipe is directly communicated with the liquid receiving bottle, and a branch pipe can be arranged on the liquid receiving bottle to form an interface connected with the vacuum-pumping device.
In other embodiments of the pre-peroxide value detection processing apparatus, the vacuum extractor may be disposed outside the housing, and is not part of the pre-peroxide value detection processing apparatus.
In other embodiments of the pre-treatment device for peroxide value detection, when a plurality of U-shaped filter tubes are arranged in series and connected in series, the horizontal hydraulic brace rod may be set to a left and right hydraulic brace rod, and the U-shaped filter tubes are drawn out from the left or right side at this time.
In other embodiments of the pre-treatment equipment for peroxide value detection, the upper and lower hydraulic support rods and the horizontal hydraulic support rod can be replaced by air cylinders or hydraulic cylinders, and a hydraulic system or a pneumatic system is required to be arranged to control the actions of the air cylinders or the hydraulic cylinders.
In other embodiments of the pre-treatment equipment for peroxide value detection, the horizontal moving device is not provided, but only the up-down moving device is connected with the U-shaped filter pipe, at this time, the U-shaped filter pipe cannot be drawn out to the outside, and a laboratory technician needs to extend to the lower part of the shell to add the drying agent into the U-shaped filter pipe.
In other embodiments of the pre-treatment equipment for peroxide value detection, the up-and-down moving device is not required to be arranged, the shell is not required to be arranged at the moment, the U-shaped filter pipe is directly and manually connected with the corresponding connecting pipe in a sealing manner, when the connecting pipe is detached at the moment, a drying agent can be added into the U-shaped filter pipe, and the filter device which is in sealing communication can be formed after the U-shaped filter pipe is manually connected with the corresponding connecting pipe in a sealing manner.
In other embodiments of the peroxide value detection pretreatment equipment, only two U-shaped filter pipes can be arranged, and only two stages of filtering are provided; the U-shaped filter tubes may also be provided in four or more numbers.
In other embodiments of the pre-treatment equipment for peroxide value detection, the filtering unit may not be a U-shaped filtering tube, but may be a common filtering bottle having a bottle body and a bottle cap, and the drying agent is contained in the filtering bottle, and at this time, the filtering bottle is required to be provided with a liquid inlet tube and a liquid outlet tube.
Claims (7)
1. A peroxide value detection pretreatment apparatus, comprising:
a base;
the liquid storage bottle is arranged on the base and used for storing a sample to be filtered;
the liquid receiving bottle is arranged on the base and is used for receiving the filtered sample;
the inlet of the filtering device is communicated with the liquid storage bottle, the outlet of the filtering device is communicated with the liquid receiving bottle, and the filtering device is used for containing a drying agent so as to remove water from the sample passing through the filtering device in a convection manner;
the filtering device comprises at least two stages of filtering units which are arranged on a base and connected in sequence, so as to remove water from a sample at least twice;
and one end of the liquid receiving bottle or the filtering device, which is close to the liquid receiving bottle, is provided with an interface for connecting with a vacuum pumping device, so that a sample to be filtered automatically flows through the filtering device from the liquid storage bottle and finally flows into the liquid receiving bottle under the action of negative pressure.
2. The pretreatment equipment for peroxide value detection according to claim 1, wherein the filtering unit is a U-shaped filtering pipe with an upward pipe opening, the U-shaped filtering pipe is used for containing the drying agent, and the base is provided with an up-down moving device for controlling the up-down movement of each U-shaped filtering pipe; the base includes the bottom plate and fixes the stand on the bottom plate, the top of stand is fixed with the casing, filter equipment still including fixing respectively on the casing be used for connecting U-shaped filter tube and stock solution bottle, U-shaped filter tube and connect the liquid bottle, and the connecting pipe of two adjacent U-shaped filter tubes, the U-shaped filter tube is sealed the butt joint with the connecting pipe that corresponds when reciprocating the in-process and having the rebound, in order to form the filter equipment's of sealed intercommunication butt joint station, the U-shaped filter tube still has when the rebound with the connecting pipe separation that corresponds, so that the separation station of drier is packed into in to the U-shaped filter tube.
3. The pre-processing equipment for peroxide value detection according to claim 2, further comprising a horizontal moving device for controlling horizontal movement of each U-shaped filter tube, wherein the horizontal moving device is connected to and engaged with the up-down moving device for horizontally moving the U-shaped filter tube to the outside of the base and the housing when the U-shaped filter tube is at the separation station, so as to load the drying agent into the U-shaped filter tube.
4. The pre-treatment equipment for peroxide value detection according to claim 3, wherein the up-down moving device is an upper hydraulic support rod and a lower hydraulic support rod, the bottom end of the upper hydraulic support rod is fixed on the bottom plate, the horizontal moving device comprises a horizontal moving plate and a horizontal hydraulic support rod installed on the horizontal moving plate, one end of the horizontal hydraulic support rod is fixed on the horizontal moving plate, the other end of the horizontal hydraulic support rod is fixedly connected with the top end of the upper hydraulic support rod and the bottom end of the lower hydraulic support rod, and a fixing structure for fixing the U-shaped filter tube.
5. The peroxide value detection pretreatment equipment according to any one of claims 2 to 4, wherein the vacuum extractor is installed in the housing.
6. The pretreatment equipment for peroxide value detection according to any one of claims 1 to 4, wherein a joint is arranged at one end of the filtering device close to the liquid receiving bottle, the joint comprises an outer pipe and an inner pipe arranged inside the outer pipe, one end of the outer pipe and one end of the inner pipe are fixedly and hermetically arranged, an annular space is formed at the other end of the outer pipe and the other end of the inner pipe, the inner pipe is used for allowing a sample to enter the liquid receiving bottle, a connecting pipe communicated with the annular space is arranged on the outer pipe, and the joint is formed by a pipe orifice of the connecting pipe.
7. The peroxide value detection pretreatment equipment according to any one of claims 1 to 4, wherein the liquid storage bottle comprises an upper liquid storage bottle, a lower liquid storage bottle and a bottle cap, the upper liquid storage bottle and the lower liquid storage bottle are detachably connected through a bottle opening clamp, the bottle cap is installed at the top of the upper liquid storage bottle, a liquid storage bottle diaphragm is arranged in the upper liquid storage bottle, and the lower liquid storage bottle is connected with a filtering device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922136099.9U CN211367502U (en) | 2019-12-03 | 2019-12-03 | Peroxide value detection pretreatment equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922136099.9U CN211367502U (en) | 2019-12-03 | 2019-12-03 | Peroxide value detection pretreatment equipment |
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| CN211367502U true CN211367502U (en) | 2020-08-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112781950A (en) * | 2020-12-25 | 2021-05-11 | 贵州省检测技术研究应用中心 | Grease extraction element for acid value and peroxide value experiments |
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2019
- 2019-12-03 CN CN201922136099.9U patent/CN211367502U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112781950A (en) * | 2020-12-25 | 2021-05-11 | 贵州省检测技术研究应用中心 | Grease extraction element for acid value and peroxide value experiments |
| CN112781950B (en) * | 2020-12-25 | 2024-01-30 | 贵州省检测技术研究应用中心 | Oil extraction device for acid value and peroxide value experiments |
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