Organic solvent weighing, metering and conveying device

Abstract

The utility model discloses an organic solvent weighing, metering and conveying device which comprises a weighing and metering unit, a power conveying unit and a filling seat unit, the filling seat unit is connected with the power conveying unit, the power conveying unit is connected with the weighing and metering unit, the weighing and metering unit comprises an anti-explosion safety cabinet, and the anti-explosion safety cabinet is connected with the power conveying unit. A weighing and metering assembly and a solvent storage assembly are arranged in the explosion-proof safety cabinet, and the solvent storage assembly is arranged above the weighing and metering assembly. According to the organic solvent weighing, metering and conveying device adopting the structure, the organic solvent can be accurately taken through the design of the weighing and metering unit, the power conveying unit and the filling seat unit, and the operation is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of accurate liquid taking and filling of organic solvents, in particular to an organic solvent weighing, metering and conveying device. Background Art

[0002] At present, most factories, laboratories and other work scenes use human eyes to observe the scale of the liquid container to determine the dosage and manually take the liquid, which has the following main shortcomings: (1) If the dosage is to be controlled to a certain accurate value, it is necessary to first roughly take the liquid and then use a rubber-tipped dropper to take the liquid, which is cumbersome. (2) There will be errors in human eye observation, resulting in deviations between the actual dosage and the theoretical dosage, affecting the experimental results or product functions. (3) Repeated insertion and removal of the reagent bottle cap will affect the sealing of the reagent bottle. After the bottle cap is opened, the reagent bottle is exposed, which may cause the reagent to volatilize, causing waste and toxicity to the human body. (4) There will be safety hazards for flammable and explosive organic solvents. (5) The reagent bottle needs to be taken out and put back repeatedly during use, which may cause the risk of breakage. Therefore, it cannot meet the demand for accurate use of organic solvents. Utility Model Content

[0003] In view of the defects in the prior art, the utility model provides an organic solvent weighing, metering and conveying device, which can effectively solve the above problems.

[0004] To achieve the above-mentioned purpose, the utility model provides an organic solvent weighing and metering conveying device, including a weighing and metering unit, a power delivery unit and a filling seat unit, the filling seat unit and the power delivery unit are connected, the power delivery unit and the weighing and metering unit are connected, the weighing and metering unit includes an explosion-proof safety cabinet, a weighing and metering component and a solvent storage component are arranged in the explosion-proof safety cabinet, and the solvent storage component is arranged above the weighing and metering component.

[0005] Preferably, the explosion-proof safety cabinet comprises a cabinet body, a cabinet door is arranged on the cabinet body, and a shelf is arranged inside the cabinet body.

[0006] Preferably, the weighing and metering assembly comprises a weighing base arranged at the bottom of the cabinet, four single-point weighing sensors are equidistantly arranged on the weighing base, the four single-point weighing sensors are fixedly connected through a pad and a weighing panel, and a plurality of reagent bottle limit plates are fixedly arranged on the weighing panel;

[0007] Rubber shock-absorbing pads are arranged at the four lower corners of the weighing base.

[0008] Preferably, the solvent storage assembly includes a reagent bottle arranged on the reagent bottle limit plate, the reagent bottle is provided with a bottle cap, the bottle cap is provided with a double-headed sampling connector, the inner side of the double-headed sampling connector is connected to a glass tube through a connecting hose, and the glass tube and the connecting hose are arranged inside the reagent bottle.

[0009] Preferably, the outer side of the double-head sampling joint is fixedly connected to one end of the long hose and the short hose through a throat clamp, and the other end of the short hose is connected to a normally closed explosion-proof solenoid valve, and the normally closed explosion-proof solenoid valve is fixedly arranged on the layer plate;

[0010] The other end of the long hose extends out of the cabinet, and the tube body of the long hose is clamped and fixed by a plurality of single-hole hose clamps, and the plurality of single-hole hose clamps are equidistantly fixed on the shelf.

[0011] Preferably, the power delivery unit includes a hose and a peristaltic pump, the peristaltic pump is driven by a motor, and the motor is arranged in an open area outside the explosion-proof safety cabinet; the head end of the hose is connected to the long hose, and a clamping hole is arranged on the peristaltic pump, and the tail end of the hose passes through the clamping hole.

[0012] Preferably, the filling seat unit includes a filling seat, a through hole is formed on the filling seat, the through hole is penetrated by the hose, an adjustment hole is formed at the top of the filling seat, a filling head is arranged in the adjustment hole, the filling head is connected to the end of the hose, and the hose is fixed to the filling head by a second throat clamp.

[0013] Preferably, a beaker base is arranged directly below the filling head, and a beaker is arranged on the beaker base; the beaker base is arranged on one side of the filling seat.

[0014] Therefore, the utility model adopts an organic solvent weighing metering and conveying device of the above structure, which has the following beneficial effects:

[0015] (1) This device uses an explosion-proof safety cabinet as a sealing device, which can effectively eliminate the safety hazards of flammable and explosive organic solvents and their vapors, and reduce the risk of reagent bottles breaking.

[0016] (2) The device uses a single-point weighing sensor, which can accurately measure the organic solvent without coming into contact with the organic solvent, thereby ensuring the cleanliness of the organic solvent.

[0017] (3) The reagent bottle used in this device is kept sealed. When taking liquid, the normally closed explosion-proof solenoid valve is opened and the peristaltic pump is used to take liquid, which effectively reduces the volatilization of organic solvents.

[0018] (4) The normally closed explosion-proof solenoid valve used in this device is in a normally closed state when not powered, which can prevent the volatilization of organic solvents caused by the operator's forgetfulness.

[0019] (5) This device uses a peristaltic pump as a conveying power device. During the conveying process, the peristaltic pump does not come into contact with the organic solvent, which can ensure that the organic solvent is not introduced into pollutants and ensure the cleanliness of the organic solvent.

[0020] (6) The utility model realizes accurate liquid extraction of organic solvents through the design of a weighing and metering unit, a power transmission unit and a filling seat unit, and is easy to operate.

[0021] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural schematic diagram of an embodiment of an organic solvent weighing and metering conveying device of the utility model;

[0023] Figure 2 It is a top view of an embodiment of an organic solvent weighing metering and conveying device of the utility model;

[0024] Figure 3 It is a side view of an embodiment of an organic solvent weighing metering and conveying device of the utility model;

[0025] Figure 4 This is a schematic diagram of the internal structure of a weighing and metering component of an organic solvent weighing and metering conveying device of the utility model;

[0026] Figure 5 This is a schematic diagram of the internal structure of an explosion-proof safety cabinet of an organic solvent weighing, metering and conveying device of the utility model;

[0027] Figure 6 This is a structural schematic diagram of a weighing and metering component of an organic solvent weighing and metering conveying device of the utility model;

[0028] Figure 7 This is a structural schematic diagram of a solvent storage component of an organic solvent weighing and metering conveying device of the utility model;

[0029] Reference numerals: 1, weighing and measuring unit; 11, explosion-proof safety cabinet; 111, cabinet body; 112, cabinet door; 113, shelf; 12, weighing and measuring assembly; 121, weighing base; 122, single-point weighing sensor; 123, pad; 124, weighing panel; 125, reagent bottle limit plate; 126, rubber shock-absorbing pad; 13, solvent storage assembly; 1301, reagent bottle; 1302, bottle cap; 1303 , double-head sampling connector; 1304, connecting hose; 1305, glass tube; 1306, throat clamp one; 1307, long hose; 1308, short hose; 1309, normally closed explosion-proof solenoid valve; 1310, single-hole hose clamp; 2, power transmission unit; 21, hose; 22, peristaltic pump; 23, motor; 3, filling seat unit; 31, filling seat; 32, filling head; 33, throat clamp two; 34, beaker base. DETAILED DESCRIPTION

[0030] The technical solution of the utility model is further described below through the accompanying drawings and embodiments.

[0031] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0032] Example

[0033] See also Figure 1-7The utility model provides an organic solvent weighing and metering conveying device, including a weighing and metering unit 1, a power conveying unit 2 and a filling seat unit 3, wherein the filling seat unit 3 is connected to the power conveying unit 2, and the power conveying unit 2 is connected to the weighing and metering unit 1. The power conveying unit 2 is used to suck out the organic solvent stored in the weighing and metering unit 1, and discharge the organic solvent into the beaker used for taking liquid through the filling seat unit 3. At the same time, the weighing and metering unit 1 can calculate the taken dosage, thereby helping the staff to judge when to stop taking liquid. The weighing and metering unit 1 includes an explosion-proof safety cabinet 11, which has good sealing and safety and plays the role of sealing the organic solvent. A weighing and metering component 12 and a solvent storage component 13 are arranged in the explosion-proof safety cabinet 11, and the solvent storage component 13 is arranged above the weighing and metering component 12. The weighing and metering component 12 can calculate the difference in weight of the organic solvent in the reagent bottle before and after liquid extraction, thereby obtaining the extracted dosage, and plays the role of weighing the extracted dosage. The solvent storage component 13 can store multiple organic solvents or a large amount of a single organic solvent, and plays the role of storing organic solvents.

[0034] The explosion-proof safety cabinet 11 includes a cabinet body 111, a cabinet door 112 is provided on the cabinet body 111, and a layer board 113 is provided inside the cabinet body 111. The interior of the explosion-proof safety cabinet 11 is divided into three layers from bottom to top, namely: a bottom layer, a middle layer and an upper layer; wherein the bottom layer is a weighing and metering component 12; and the middle layer and the upper layer together constitute a solvent storage component 13.

[0035] The weighing and metering assembly 12 includes a weighing base 121 disposed at the bottom of the cabinet 111, and four single-point weighing sensors 122 are equidistantly disposed on the weighing base 121, and one end of each single-point weighing sensor 122 is fixedly connected to the weighing base 121 by two screws. A pad 123 is disposed at the top of the cantilever end of the four single-point weighing sensors 122, and a weighing panel 124 is disposed above the pad 123. The single-point weighing sensors 122 are fixedly connected to the weighing panel 124 through the pad 123 by screws.

[0036] A plurality of reagent bottle limit plates 125 are fixedly arranged on the weighing panel 124; the reagent bottle limit plates 125 are used to limit the reagent bottle 1301; when taking liquid, the single-point weighing sensor 122 can detect the continuous change in the weight of the organic solvent in the reagent bottle 1301, thereby measuring the amount of organic solvent taken, and the operator can accurately judge when the required dosage is taken and stop taking liquid.

[0037] Rubber shock-absorbing pads 126 are arranged at the four corners below the weighing base 121. The shock-absorbing pads 126 are used to reduce the impact or the influence of instability as much as possible during weighing and measuring.

[0038] The solvent storage assembly 13 includes four reagent bottles 1301 arranged evenly on the reagent bottle limiting plate 125, which are respectively located at the center of the weighing panel 124. The reagent bottle 1301 is provided with a bottle cap 1302, and the bottle cap 1302 is provided with a double-headed sampling connector 1303. The inner side of the double-headed sampling connector 1303 is connected to a glass tube 1305 through a connecting hose 1304. The glass tube 1305 and the connecting hose 1304 are arranged inside the reagent bottle 1301. The glass tube 1305 is relatively long and is only slightly away from the bottom of the reagent bottle 1301, which can ensure that the bottom can also be sucked when the organic solvent is sucked, avoiding frequent addition of liquid to the reagent bottle 1301.

[0039] The outer side of the double-head sampling connector 1303 is fixedly connected to the long hose 1307 and one end of the short hose 1308 through the throat clamp 1306, and the other end of the short hose 1308 is connected to the normally closed explosion-proof electromagnetic valve 1309, and the other end of the short hose 1308 is fastened to the normally closed explosion-proof electromagnetic valve 1309 through the throat clamp 1306. The normally closed explosion-proof electromagnetic valve 1309 is fixedly arranged on the layer plate 113; the normally closed explosion-proof electromagnetic valve 1309 is energized and opened during operation, and the organic solvent in the reagent bottle 1301 is pressed into the long hose 1307 by the external atmospheric pressure, so as to prepare for the next level of liquid suction action.

[0040] The other end of the long hose 1307 extends out of the cabinet 111 , and the tube body of the long hose 1307 is clamped and fixed by a plurality of single-hole hose clamps 1310 , and the plurality of single-hole hose clamps 1310 are fixed on the layer board 113 at equal intervals.

[0041] The power delivery unit 2 includes a hose 21 and a peristaltic pump 22. The peristaltic pump 22 is driven by a motor 23. After the motor 23 is powered, three rollers in the peristaltic pump 22 alternately squeeze and release the hose 21 to pump the organic solvent. The motor 23 is arranged in an open space outside the explosion-proof safety cabinet 11. The head end of the hose 21 is connected to the long hose. The peristaltic pump 22 is provided with a clamping hole, and the tail end of the hose 21 passes through the clamping hole.

[0042] The filling seat unit 3 includes a filling seat 31, which is fixed at a fixed position by screws. A through hole is provided on the filling seat 31, and the hose 21 penetrates the through hole. An adjustment hole is provided at the top of the filling seat 31, and a filling head 32 is arranged in the adjustment hole. The adjustment hole is used for adjusting and positioning the filling head 32, and the filling head 32 can be fine-tuned forward and backward in the adjustment hole of the filling seat 31. The filling head 32 is connected to the end of the hose 21, and the hose 21 is fixed to the filling head 32 through a throat clamp 33.

[0043] A beaker base 34 is arranged directly below the filling head 32 , and a beaker is arranged on the beaker base 34 . The beaker is used to take liquid; the beaker base 34 is arranged on one side of the filling seat 31 .

[0044] The accurate liquid extraction method using the above-mentioned organic solvent weighing metering and conveying device comprises the following steps:

[0045] Step 1: Installation and adjustment. Open the door 112 of the explosion-proof safety cabinet 11, and place the reagent bottle 1301 filled with organic solvent on the weighing panel 124; the two ends of the short hose 1308 are respectively connected to the normally closed explosion-proof solenoid valve 1309 and one end of the double-headed sampling connector 1303, and the two ends are respectively fastened with a hose clamp 1306; one end of the long hose 1307 is connected to the other end of the double-headed sampling connector 1303 and fastened with a hose clamp 1306, and the other end is connected to one end of the hose 21; the other end of the hose 21 is connected to the filling head 32 and fastened with a hose clamp 2 33; the position of the filling head 32 in the adjustment hole can be adjusted forward and backward according to actual needs.

[0046] Step 2: Take the liquid. Power on the normally closed explosion-proof solenoid valve 1309, then power on the motor 23 connected to the peristaltic pump 22, and adjust the motor 23 to a suitable speed so that the organic solvent in the reagent bottle 1301 is sucked out under the action of atmospheric pressure and repeated squeezing of the peristaltic pump 22; it should be noted that the explosion-proof solenoid valve 1309 should be powered on first, and then the motor 23 connected to the peristaltic pump 22 should be powered to avoid pressure shock caused by sudden changes in pressure.

[0047] Step 3: Detect the dose taken. By monitoring the weight of the remaining organic solvent in the reagent bottle 1301 transmitted in real time by the single-point weighing sensor 122, the weight of the organic solvent taken is obtained based on the initial weight of the organic solvent, and the dose taken is obtained based on the density of the organic solvent taken, so as to determine when to stop taking the liquid.

[0048] Step 4: Liquid extraction is completed. First, the motor 23 connected to the peristaltic pump 22 is powered off, and then the normally closed explosion-proof electromagnetic valve 1309 is powered off. This is because the peristaltic pump 22 will generate pressure during operation. If the electromagnetic valve 1309 is closed first, the organic solvent in the hose 21 may flow back, causing damage or leakage to the peristaltic pump 22.

[0049] Step 5: Check the residual amount. The single-point weighing sensor 122 is used to determine whether the residual amount of organic solvent in the reagent bottle 1301 is sufficient. If it is insufficient for taking liquid, the organic solvent is added to avoid insufficient residual amount of organic solvent when taking liquid next time. It should be noted that the residual amount of organic solvent should be checked again when taking liquid next time.

[0050] Therefore, the utility model adopts an organic solvent weighing metering and conveying device with the above structure, and adopts an explosion-proof safety cabinet as a sealing device, which can effectively eliminate the safety hazards of flammable and explosive parts of organic solvents and their vapors, and reduce the risk of reagent bottles breaking; a single-point weighing sensor is adopted, which does not contact the organic solvent while accurately measuring the organic solvent, thereby ensuring the cleanliness of the organic solvent; the reagent bottle adopted is kept in a sealed state, and when taking liquid, the normally closed explosion-proof solenoid valve is opened and cooperated with the peristaltic pump to take liquid, thereby effectively reducing the volatilization of the organic solvent; the normally closed explosion-proof solenoid valve adopted is in a normally closed state when not energized, thereby avoiding the volatilization of the organic solvent caused by the operator's forgetfulness; a peristaltic pump is adopted as a conveying power device, and during the conveying process, the peristaltic pump does not contact the organic solvent, thereby ensuring that the organic solvent is not introduced into pollutants, thereby ensuring the cleanliness of the organic solvent; the design of the weighing and metering unit, the power conveying unit and the filling seat unit realize accurate liquid taking of the organic solvent, which is easy to operate.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that they can still modify or replace the technical solution of the utility model with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the utility model.

Claims

1. An organic solvent weighing and metering conveying device, Features: It includes a weighing and metering unit, a power delivery unit and a filling seat unit, the filling seat unit is connected to the power delivery unit, the power delivery unit is connected to the weighing and metering unit, the weighing and metering unit includes an explosion-proof safety cabinet, a weighing and metering component and a solvent storage component are arranged in the explosion-proof safety cabinet, and the solvent storage component is arranged above the weighing and metering component.

2. An organic solvent weighing and metering conveying device according to claim 1, Features: The explosion-proof safety cabinet comprises a cabinet body, a cabinet door is arranged on the cabinet body, and a layer board is arranged inside the cabinet body.

3. An organic solvent weighing and metering conveying device according to claim 2, Features: The weighing and metering assembly comprises a weighing base arranged at the bottom of the cabinet, four single-point weighing sensors are equidistantly arranged on the weighing base, the four single-point weighing sensors are fixedly connected through a pad and a weighing panel, and a plurality of reagent bottle limit plates are fixedly arranged on the weighing panel; Rubber shock-absorbing pads are arranged at the four lower corners of the weighing base.

4. An organic solvent weighing and metering conveying device according to claim 3, Features: The solvent storage assembly includes a reagent bottle arranged on the reagent bottle limit plate, the reagent bottle is provided with a bottle cap, the bottle cap is provided with a double-headed sampling connector, the inner side of the double-headed sampling connector is connected to a glass tube through a connecting hose, and the glass tube and the connecting hose are arranged inside the reagent bottle.

5. An organic solvent weighing and metering conveying device according to claim 4, Features: The outer side of the double-head sampling joint is fixedly connected to one end of a long hose and a short hose through a throat clamp, and the other end of the short hose is connected to a normally closed explosion-proof solenoid valve, and the normally closed explosion-proof solenoid valve is fixedly arranged on the layer plate; The other end of the long hose extends out of the cabinet, and the tube body of the long hose is clamped and fixed by a plurality of single-hole hose clamps, and the plurality of single-hole hose clamps are equidistantly fixed on the shelf.

6. An organic solvent weighing and metering conveying device according to claim 5, Features: The power delivery unit includes a hose and a peristaltic pump. The peristaltic pump is driven by a motor, and the motor is arranged in an open space outside the explosion-proof safety cabinet. The head end of the hose is connected to the long hose. The peristaltic pump is provided with a clamping hole, and the tail end of the hose passes through the clamping hole.

7. An organic solvent weighing and metering conveying device according to claim 6, Features: The filling seat unit includes a filling seat, a through hole is formed on the filling seat, the through hole is penetrated by the hose, an adjustment hole is formed at the top of the filling seat, a filling head is arranged in the adjustment hole, the filling head is connected to the end of the hose, and the hose is fixed to the filling head by a second throat clamp.

8. An organic solvent weighing and metering conveying device according to claim 7, Features: A beaker base is arranged directly below the filling head, and a beaker is arranged on the beaker base; the beaker base is arranged on one side of the filling seat.

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