Intelligent COD (Chemical Oxygen Demand) reflux digestion device

Abstract

The utility model relates to an intelligent COD (Chemical Oxygen Demand) reflux digestion device which comprises a shell frame, a liquid adding mechanism arranged at the top of the shell frame in a manner of reciprocating along the left-right direction, a plurality of condensation pipes arranged on the front side of the shell frame side by side along the left-right direction, a lifting mechanism for driving the condensation pipes to move up and down, and a digestion cup arranged below the condensation pipes, the transverse moving mechanism is used for driving the upper digestion cup to move back and forth; the heating mechanism is used for heating the digestion cup; the plurality of lifting mechanisms, the plurality of digestion cups, the plurality of heating mechanisms and the plurality of transverse moving mechanisms correspond to the plurality of condensation pipes; a mounting position for mounting the digestion cup is arranged on a movable terminal of the transverse moving mechanism, and the heating mechanism is arranged on the mounting position; the front side wall of the shell frame is further provided with a cooling mechanism for cooling the condensation pipe. The device is simple in overall structure, automatic operation can be achieved in the operation process, the condensation pipes and the digestion cups can independently move up and down and back and forth respectively, and operation of experimenters is further facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to COD backflow equipment technical field, especially intelligent COD backflow digestion device. BACKGROUND

[0002] COD is the amount of oxygen consumed when the oxidizable substances in water are chemically oxidized, generally expressed in milligrams of oxygen consumed per liter of water, and is a basic comprehensive index for water quality monitoring.

[0003] The current COD latest standard is "HJ828-2017 Water Quality Determination of Chemical Oxygen Demand Dichromate Method". The standard specifies that backflow digestion method is used during COD digestion. The specific steps are as follows:

[0004] 1. Take 10 mL sample + mercury sulfate solution + standard solution in digestion bottle;

[0005] 2. Connect the digestion bottle with the lower end of the condenser tube of the reflux device, slowly add silver sulfate-sulfuric acid solution from the upper end of the condenser tube;

[0006] 3. Heat reflux for 120 min, and after cooling, add 45 mL water to clean the condenser tube from the upper end of the condenser tube;

[0007] 4. Take out the digestion bottle and titrate.

[0008] As can be seen from the above, there are high-risk steps in the COD digestion process. Since silver sulfate-sulfuric acid solution is a strong corrosive liquid, the current laboratory addition process uses a beaker to pour and add from the upper end of the condenser tube. During the addition process, sulfuric acid solution is easily stuck to the hands or flows onto the instrument, thereby causing harm to the experimenters or instrument equipment. Moreover, the reflux equipment is manually added with acid, manually added with water, and manually separated from the condenser tube and the digestion bottle. Each process requires the intervention of experimenters. Moreover, the current market reflux device has a condenser tube upper end distance from the ground of generally 1.5-1.6 meters. Not only is the operation inconvenient, especially for short experimenters, but also the maximum sample flux of the existing reflux device is low, which consumes a large amount of experimental time.

[0009] In view of the risk problems existing in the above operation process, the prior application (application number CN202122869757.2) proposes a high-throughput full-automatic COD reflux digestion device, which comprises a plurality of digestion cups, a heating mechanism for heating the digestion cups, a plurality of condenser pipe assemblies corresponding to the digestion cups, a liquid adding mechanism for adding liquid to the plurality of condenser pipe assemblies, and a lifting mechanism for driving the plurality of condenser pipe assemblies to lift between the liquid adding mechanism and the digestion cups. The high-throughput full-automatic COD reflux digestion device further comprises an X-axis translation mechanism for driving the liquid adding mechanism to move on the upper end of the plurality of condenser pipe assemblies. However, the device still has certain deficiencies, such as the inability of the plurality of condenser pipes to realize independent lifting, and the difficulty in disassembling the layout. Therefore, based on this, an intelligent COD reflux digestion device is proposed again to overcome the deficiencies of the prior art. Utility model content

[0010] The utility model aims at the deficiency of prior art, and provides an intelligent COD reflux digestion device, which can well solve the above problems.

[0011] To achieve the above requirements, the technical scheme adopted by the utility model to solve its technical problems is:

[0012] An intelligent COD reflux digestion device is provided, which comprises a shell frame, a liquid adding mechanism reciprocally arranged on the top of the shell frame in the left-right direction, a plurality of condenser pipes arranged side by side on the front side of the shell frame in the left-right direction, a lifting mechanism for driving the condenser pipes to move up and down, a digestion cup arranged below the condenser pipes, a transverse movement mechanism for driving the digestion cup to move forward and backward, and a heating mechanism for heating the digestion cup. The lifting mechanism, the digestion cup, the heating mechanism and the transverse movement mechanism are each provided with a plurality of corresponding condenser pipes. The movable end of the transverse movement mechanism is provided with a mounting position for mounting the digestion cup, and the heating mechanism is arranged on the mounting position. The front side wall of the shell frame is further provided with a cooling mechanism for cooling the condenser pipes.

[0013] The intelligent COD reflux digestion device, wherein the cooling mechanism is provided with a plurality of corresponding condenser pipes.

[0014] The intelligent COD reflux digestion device, wherein the cooling mechanism comprises a first air outlet arranged on the front side wall of the shell frame, an air baffle arranged on the air inlet end of the first air outlet, and a first fan for blowing air in the air baffle.

[0015] The utility model discloses a intelligent COD backflow digestion device, wherein, the wind cover is long strip and covers on a plurality of longitudinal arrangement's first air outlet, and the first fan is located the lower extreme of wind cover.

[0016] The utility model discloses a intelligent COD backflow digestion device, wherein, the transverse moving mechanism includes the support arm who sets along the front -back direction and the transverse moving drive unit of drive the support arm moves back and forth, the support arm is the movable terminal, the transverse moving drive unit is located in the shell frame, and the front end of support arm penetrates the shell frame and is located at its front side, and the mounting site is set up on the front end upper surface of support arm.

[0017] The utility model discloses a intelligent COD backflow digestion device, wherein, the heating mechanism includes the positioning sleeve for positioning the digestion cup, and the heating body is located on the positioning sleeve, the positioning sleeve is detachable and is located on the mounting site, the inner chamber diameter of positioning sleeve is adapted with the outer diameter of digestion cup, when assembling in place, the lower end of digestion cup is inserted in the inner chamber of positioning sleeve.

[0018] The utility model discloses a intelligent COD backflow digestion device, wherein, the heating body is electric heating wire and is coaxial spiral ring around setting with the positioning sleeve.

[0019] The utility model discloses a intelligent COD backflow digestion device, wherein, the front end bottom of movable terminal is equipped with the support guide wheel.

[0020] The utility model discloses a intelligent COD backflow digestion device, wherein, the lifting mechanism includes the fixed arm of fixing the condenser pipe and the lifting drive unit of drive the fixed arm moves up and down, be equipped with the positioning hole of the fixed arm to the condenser pipe passes through, the front side wall of shell frame is located below fixed arm and is equipped with fixed frame and separation card board downwards in proper order, be equipped with the fixed hole of fixing the lower end of condenser pipe on fixed frame, the front end of separation card board is equipped with the avoidance gap of avoiding the lower end of condenser pipe, when digestion cup and condenser pipe move in place, the lower end of digestion cup and condenser pipe is located respectively the downside and upside of the gap.

[0021] The utility model discloses a intelligent COD backflow digestion device, wherein, the rear side of the mounting site on the shell frame is equipped with the second fan that carries out the heat dissipation cooling of digestion cup.

[0022] The utility model discloses a intelligent COD backflow digestion device, wherein, the liquid adding mechanism includes the liquid adding branch arm for installing liquid adding pipe and the liquid adding drive module of drive liquid adding branch arm left and right reciprocating movement.

[0023] The beneficial effects of this utility model are as follows: the overall structure of this device is simple, and the operation process can be automated through the lifting mechanism and the horizontal movement mechanism. Moreover, multiple condenser tubes and digestion cups can be moved up and down and back and forth independently, which further facilitates the operation of the experimenters. Furthermore, the side-by-side layout makes it easier to disassemble and maintain the condenser tubes and digestion cups. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is an overall bird's-eye view of this utility model.

[0026] Figure 2 yes Figure 1 Enlarged view of a local structure.

[0027] Figure 3 This is an exploded view of the rear side of this utility model.

[0028] Figure 4 This is a diagram of the internal structure of this utility model.

[0029] Figure 5 This is a front view of the present invention.

[0030] Figure 6 yes Figure 5 AA sectional view.

[0031] Figure 7 yes Figure 6 Enlarged view of a local structure. Detailed Implementation

[0032] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0033] Reference to "an embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that any of the embodiments described herein can be incorporated into any other embodiment.

[0034] "Multiple" refers to two or more. "And / or", describing the association relationship of the associated objects, means that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents that the associated objects before and after are in an "or" relationship.

[0035] Furthermore, the terms "upper", "lower", "left", "right", "upper end", "lower end", "vertical", and the like indicating the orientation are all with reference to the attitude position of the device or equipment described in the scheme in normal use.

[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the utility model, not all. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0037] The intelligent COD backflow digestion device of the preferred embodiment of the utility model, as shown in Figures 1-7 The shell frame 10 is vertically arranged, the liquid adding mechanism 20 is reciprocatingly arranged on the top of the shell frame 10 along the left-right direction, the plurality of condensing pipes 30 are arranged side by side on the front side of the shell frame 10 along the left-right direction, the lifting mechanism 40 drives the condensing pipes 30 to move up and down, the digestion cup 50 is arranged below the condensing pipes 30, the transverse moving mechanism 60 drives the front and back movement of the digestion cup 50, and the heating mechanism 70 heats the digestion cup 50; wherein the lifting mechanism 40, the digestion cup 50, the heating mechanism 70 and the transverse moving mechanism 60 are all provided with a plurality of corresponding to the plurality of condensing pipes 30, so as to realize the independent lifting of the condensing pipes 30 and the liquid adding operation corresponding to the digestion cup 50 one by one; the movable terminal of the transverse moving mechanism 60 is provided with a mounting position 80 for mounting the digestion cup 50, and the heating mechanism 70 is arranged on the mounting position 80; the front side wall of the shell frame 10 is further provided with a cooling mechanism 90 for cooling the condensing pipes 30.

[0038] The whole device has simple structure, and the lifting mechanism 40 and the transverse moving mechanism 60 can realize automatic operation, and the plurality of condensing pipes 30 and the plurality of digestion cups 50 can be independently moved up and down and front and back, which further facilitates the operation of the experimental personnel; and the side-by-side layout is more convenient for disassembly and maintenance operation of the condensing pipes 30 and the digestion cups 50.

[0039] In addition, a controller 100 for controlling the lifting mechanism 40 and the transverse moving mechanism 60 can be additionally arranged inside the shell frame 10, so as to realize linkage with intelligent equipment or smart laboratory equipment and realize more intelligent operation control, such as remote control.

[0040] In the embodiment, the cooling mechanism 90 is provided with a plurality of cooling mechanisms corresponding to the plurality of condensing pipes 30, specifically, the cooling mechanism 90 includes a first air outlet 91 arranged on the front side wall of the shell frame 10, an air baffle 92 arranged on the air inlet end of the first air outlet 91, and a first fan 93 for blowing air in the air baffle 92; the first air outlet 91 is located at the rear side of the condensing pipe 30 and is provided with a plurality of and arranged longitudinally to adapt to the shape structure of the condensing pipe 30, so as to ensure that the cooling speed of the condensing pipe 30 is fast enough and the efficiency of the experimental operation is improved.

[0041] In the embodiment, the air baffle 92 is in a strip shape and covers the plurality of longitudinally arranged first air outlets 91, and the first fan 93 is located at the lower end of the air baffle 92 to avoid the lifting mechanism 40, so that the layout of the whole structure is more reasonable; wherein the front and rear thicknesses of the air baffle 92 are thinner at the upper end and thicker at the lower end, so that the rear side wall forms a forward inclined guide slope, which is more conducive to the uniform blowing of cold air and ensures that the condensing pipe 30 can be uniformly cooled from top to bottom.

[0042] In the embodiment, the transverse moving mechanism 60 includes a support arm 61 arranged in the front and rear directions, and a transverse driving unit 62 for driving the support arm 61 to move forward and backward, specifically, the transverse driving unit 62 is a screw motor module, of course, it can also be a cylinder or a rotary linear conversion module or a linear motor and other conventional linear driving mechanisms; the support arm 61 is a movable terminal, the transverse driving unit 62 is located in the shell frame 10, the front end of the support arm 61 penetrates the shell frame 10 and is located at the front side thereof, and the mounting position 80 is arranged on the upper surface of the front end of the support arm 61.

[0043] Further, the front end of the movable terminal is provided with a support guide wheel 110 to avoid bending deformation of the movable terminal downward due to the gravity of the digestion cup 50.

[0044] In the embodiment, the heating mechanism 70 comprises a positioning sleeve 71 for positioning the digestion cup 50, and a heating body 72 arranged on the positioning sleeve 71; the positioning sleeve 71 is detachably arranged on the mounting position 80, the inner cavity diameter of the positioning sleeve 71 is matched with the outer diameter of the digestion cup 50, when assembled in place, the lower end of the digestion cup 50 is inserted into the inner cavity of the positioning sleeve 71; further, the heating body 72 is an electric heating wire and is coaxially embedded with the positioning sleeve 71 and is installed in a spiral surrounding manner, so as to ensure uniform heating of the four sides of the digestion cup 50.

[0045] In the embodiment, the lifting mechanism 40 comprises a fixed arm 41 for fixing the condensing pipe 30, and a lifting driving unit 42 for driving the fixed arm 41 to move up and down, specifically, the lifting driving unit 42 is a longitudinally arranged screw rod motor module, of course, it can also be a cylinder or a rotary linear conversion module or a linear motor and other conventional linear driving mechanisms, and the lifting driving unit 42 is arranged inside the shell frame 10; the front end of the fixed arm 41 protrudes from the front side of the shell frame 10, and the front end of the fixed arm 41 is provided with a positioning hole 410 through which the condensing pipe 30 passes, and a fixed support 120 and a separation clamping plate 130 are sequentially arranged on the front side wall of the shell frame 10 below the fixed arm 41; the fixed support 120 is provided with a fixed hole 121 for fixing the lower end of the condensing pipe 30, and the front end of the separation clamping plate 130 is provided with an avoiding gap 131 for avoiding the lower end of the condensing pipe 30; when the digestion cup 50 and the condensing pipe 30 are moved into position, the lower ends of the digestion cup 50 and the condensing pipe 30 are located on the lower side and the upper side of the gap respectively, and through the cooperation of the separation clamping plate 130 and the avoiding gap 131, the precise butt joint of the lower end of the condensing pipe 30 and the digestion cup 50 can be ensured, and the lower end of the condensing pipe 30 is prevented from being skewed; further, the upper surface of the avoiding gap 131 is further provided with a guide inclined surface for guiding the lower end of the condensing pipe 30.

[0046] In the embodiment, the shell frame 10 is provided with a second fan 140 for cooling and heat dissipation of the digestion cup 50 on the rear side of the mounting position 80, the second fan 140 is arranged behind the front side wall of the shell frame 10, and a second air outlet 150 for the second fan 140 is arranged on the front side wall of the shell frame 10, through the cooperation of the second fan 140 and the second air outlet 150, the cooling speed of the digestion cup 50 can be accelerated.

[0047] In this embodiment, the liquid adding mechanism 20 includes a liquid adding arm 21 for mounting a liquid adding pipe, and a liquid adding drive module 22 for driving the liquid adding arm 21 to move left and right; the liquid adding drive module 22 is a belt motor module, and of course can also be a lead screw motor module, a cylinder or a rotary linear conversion module or a linear motor and other conventional linear drive mechanisms. The liquid adding pipe is directly fixed to the front end of the liquid adding arm 21, and when the liquid adding arm 21 moves left and right, the outlet of the liquid adding pipe can be aligned with the upper end opening of the condenser pipe 30 to perform liquid adding operation; further, in order to avoid the residual liquid in the outlet of the liquid adding pipe from falling on the table top, a waste liquid collection tank 160 is arranged below the position where the liquid adding arm 21 is reset on one side of the shell frame 10, and a liquid discharge pipe 170 is arranged to discharge the waste liquid in the waste liquid collection tank 160.

[0048] The principle process of the device is as follows:

[0049] a. After the sample is loaded into the digestion cup 50, it is placed into the positioning sleeve 71 on the mounting position 80;

[0050] b. The lifting mechanism 40 corresponding to the condenser pipe 30 is raised to the high position, and the horizontal moving mechanism 60 is retracted;

[0051] c. The condenser pipe 30 is lowered to the low position, the condenser pipe 30 is automatically sleeved and sealed with the digestion cup 50, and the liquid adding mechanism 20 is moved to the upper end of the unit condenser pipe 30;

[0052] d. Perform acid adding operation, after the acid adding is completed, the liquid adding mechanism 20 returns to the initial position;

[0053] e. Start heating to the set temperature, the condenser pipe 30 cooling fan starts to cool, and keep for 2 hours;

[0054] f. After 2 hours, stop heating, and the digestion cup 50 cooling fan starts to cool;

[0055] g. After the heating digestion cup 50 is lowered to room temperature, the liquid adding mechanism 20 is moved to the upper end of the unit condenser pipe 30;

[0056] h. Perform water adding operation according to the set volume;

[0057] i. After the water adding is completed, the liquid adding mechanism 20 returns to the initial position, the lifting mechanism 40 is lifted, and the separation card 130 automatically separates the condenser pipe 30 from the digestion cup 50;

[0058] 10. After the lifting mechanism 40 is lifted to the high position, the horizontal moving mechanism 60 is pushed out, and the lifting mechanism 40 is lowered to the low position;

[0059] 11. Take out the digested digestion cup 50, and wait for the next operation.

[0060] It should be understood that modifications or variations can be made according to the above description by those of ordinary skill in the art, and all such modifications and variations are intended to be within the scope of the present application as defined by the claims appended hereto.

Claims

1. A smart COD reflux digestion device, characterized in that, The cooling mechanism corresponds to multiple condensing pipes and is provided with multiple cooling mechanisms; the cooling mechanism comprises a first air outlet provided on the front side wall of the shell frame, an air baffle provided on the air inlet end of the first air outlet, and a first fan for blowing air in the air baffle; the first air outlet is located on the rear side of the condensing pipe and is provided with multiple and arranged longitudinally.

2. The intelligent COD reflux digestion device according to claim 1, characterized in that, The air baffle is in the shape of a long strip and covers the multiple longitudinally arranged first air outlets, and the first fan is located at the lower end of the air baffle.

3. The intelligent COD reflux digestion device according to claim 2, characterized in that, The transverse movement mechanism comprises a support arm arranged in the front-rear direction and a transverse movement driving unit for driving the support arm to move forward and backward; the support arm is the movable terminal, the transverse movement driving unit is located in the shell frame, the front end of the support arm penetrates the shell frame and is located on the front side thereof, and the mounting position is arranged on the upper surface of the front end of the support arm.

4. The intelligent COD reflux digestion device according to claim 1, characterized in that, The heating mechanism comprises a positioning sleeve for positioning the digestion cup and a heating body provided on the positioning sleeve; the positioning sleeve is detachably arranged on the mounting position, the inner diameter of the positioning sleeve is matched with the outer diameter of the digestion cup, and when assembled in place, the lower end of the digestion cup is inserted into the inner cavity of the positioning sleeve.

5. The intelligent COD reflux digestion device according to claim 1 or 4, characterized in that, The heating body is an electric heating wire and is coaxially and spirally arranged around the positioning sleeve.

6. The intelligent COD digestion apparatus according to claim 5, wherein, The front end of the movable terminal is provided with a support guide wheel.

7. The intelligent COD digestion apparatus according to claim 5, wherein, The lifting mechanism comprises a fixing arm for fixing the condensing pipe and a lifting driving unit for driving the fixing arm to move up and down; the fixing arm is provided with a positioning hole through which the condensing pipe passes, and the front side wall of the shell frame is provided with a fixing frame and a separation card in sequence below the fixing arm; the fixing frame is provided with a fixing hole for fixing the lower end of the condensing pipe, and the front end of the separation card is provided with an avoidance notch for avoiding the lower end of the condensing pipe; when the digestion cup and the condensing pipe are moved into position, the lower ends of the digestion cup and the condensing pipe are located on the lower side and the upper side of the notch respectively.

8. The intelligent COD reflow digestion device according to claim 1, characterized in that, The shell frame is provided with a second fan on the rear side of the mounting position for cooling the digestion cup.

9. The intelligent COD reflow digestion device according to claim 1, characterized in that, The liquid adding mechanism comprises a liquid adding branch arm for mounting a liquid adding pipe and a liquid adding driving module for driving the liquid adding branch arm to move left and right reciprocally.

10. The intelligent COD reflow digestion device according to claim 1, characterized in that, ​

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