39results about "Retort stands/clamps" patented technology

An apparatus and method for use in the biopharmaceutical and chemical industries to facilitate the temporary attachment of standard laboratory glassware to vibratory mixers and other types of aggressive shaking equipment. The container holder couples the entire flask or container to the mixing equipment in a secure fashion. The technology may be used with conventional glass flasks, or with plastic flasks that can be configured for either single-use or multiple-use. The invention allows for single handed, low force insertion of the flaskware as well as the incorporation of sensors into the container holder.

The invention relates to a rotary evaporator (1), comprising an equipment stand (2) with a protruding guide tower (3) which has a mounting on which an evaporation tank (5) is pivotably retained about a horizontal pivoting axis (42). In one embodiment of the invention, the mounting comprises a holding part connected to the guide tower, wherein a supporting part (43) that can be connected to the evaporation tank (5) is pivotably retained about a horizontal pivoting axis on the holding part, and a spindle drive (44) is provided for adjusting and determining the selected pivoting position, said spindle drive comprising an adjustment spindle (45) with a self-locking spindle thread (46).

In the present invention, a plurality of exhaust paths connected to a plurality of cup bodies surrounding substrate holding portions respectively are joined together for common use, and the openings of exhaust rate adjustment sections provided on the exhaust paths are adjusted with reference to data in which combinations of the numbers of rotations of the substrate holding portions are associated with combinations of set exhaust rates of the exhaust paths when solution treatment is performed by rotating the substrate by the substrate holding portion. According to the present invention, the cup body can be exhausted at an intended exhaust rate at all times independently of the state where the substrate in which cup body is subjected to which process.

A clamp for an Erlenmeyer flask or other laboratory containers or racks uses nickel-coated, rare earth magnets to secure the clamp to a platform for a laboratory shaker. The base of the clamp has downwardly extending positioning bosses that seat in holes or indentations on the shaker platform to prevent horizontal sliding of the clamp when the shaker is in use. A removable and replaceable, elastomeric cover for the base of the flask clamp provides cushioning and prevents spinning of the flask when the shaker is in use.

A vessel with an engaging configuration for facilitating supporting the vessel on a supporting structure, such as for example, a surface, tray, agitator, stirrer, or other processing device, which has a corresponding matingly engagable structure for engaging with the vessel engaging configuration.

A desk is disclosed for use by teachers. The desk has a fixed-height portion which remains stationary as well as an adjustable-height portion which can be raised and lowered as needed to allow students to view objects on the desk such as experiments being performed when the adjustable-height portion is in a raised position and to see the space behind the desk, which may contain a blackboard, white board, or other object which students would wan to view, when the adjustable-height portion is in a lowered position.

The invention discloses a detection system of polychlorophenol in dye, including a shell and a working chamber arranged in the shell, wherein the working chamber is provided with a rotatable connecting shaft, the upper end of the connecting shaft, is rotatably provided with a shaft mounting block, the upper side of the connecting shaft is provided with a rotary table, the lower end face of the rotary table is provided with a buffer chamber with a downward opening, and the shaft mounting block is located in the buffer chamber. The invention realizes the automation of the extraction step in the detection process of polychlorophenol, and can automatically add potassium carbonate solution to the dye. Compared with manual addition, the invention improves the accuracy, ensures the success of subsequent detection and improves the accuracy of detection. After the addition of potassium carbonate solution, the invention can Automatic oscillation improves efficiency.

The innovative glass flasks have a standard taper outer joint to fit the most commonly used glassware in chemical laboratories. Unlike the round bottom flasks, the innovative flasks with an external flat bottom can be kept upright on the bench without the flask holder support. The flasks can be held by a corresponding shaped cooling block or heating block to perform multi-flask reactions simultaneously on a magnetic hot plate stirrer without the use of clamps at various temperatures. It also ensures that the magnetic stir bars spin consistently and efficiently on a flat or a shallow hemispherical bottom when the flasks are offset from the center of the magnetic stirrer. The flasks can also resist fracturing under vacuum for solvent distillations.

An apparatuses used for the safe dispensation of compressed liquid / gas butane from a compressed liquid / gas butane can for use in mixing this liquid / gas with parts of a marijuana plant within a glass tube of the apparatus to thereby remove the THC from the marijuana plant and disposing it and the residual liquid / gasses into a capture member for further processing.

The invention discloses a distillation rack capable of fixing distilling bottles of different sizes, which comprises a base, a fixing rod is arranged on the left side of the top of the base, and a placing plate is set on the bottom of the surface of the fixing rod, and the surface of the fixing rod is The top is covered with a fixing device, and the fixing device includes an upper splint and a lower splint, grooves are provided on the inner sides of the upper splint and the lower splint, and limit rods are provided on both sides of the groove on the upper splint. The bottom of the limiting rod is provided with a limiting plate, both sides of the limiting plate are provided with slide bars, and both sides of the groove on the lower splint are provided with limiting seats. The present invention cooperates with each other through the fixing device, the upper splint, the limit rod, the fixing nut, the fixing bolt, the groove, the limit seat, the spring, the limit plate, the sliding rod, the chute and the lower splint, and can be used when the distillation frame is in use. , to fix the distilling bottles of different sizes, so that it is more convenient to carry out the distilling bottles of different sizes.

In the present invention, a plurality of exhaust paths connected to a plurality of cup bodies surrounding substrate holding portions respectively are joined together for common use, and the openings of exhaust rate adjustment sections provided on the exhaust paths are adjusted with reference to data in which combinations of the numbers of rotations of the substrate holding portions are associated with combinations of set exhaust rates of the exhaust paths when solution treatment is performed by rotating the substrate by the substrate holding portion. According to the present invention, the cup body can be exhausted at an intended exhaust rate at all times independently of the state where the substrate in which cup body is subjected to which process.

The invention discloses a device for heating a spherical distilling flask, comprising: a frame, a heating wall for displacing the spherical distilling flask, an insulating board, and a control and regulation device, and further comprising: a spring carriage which vertically moves along the frame and is connected with the heating wall by a spring including fixing force to drive the heating wall to vertically move to an operating position or a ceasing position; a control device for controlling the spring carriage to vertically move along the frame; a stopping device which is mounted on the frame elastically and located at a connecting position, the heating wall is restricted at the operating position; when located at a separating position, the heating wall resets to the ceasing position.

The present invention is in relation to a method and its apparatus, by means of which HCl generation formed from hydrolysis reactions or thermal decomposition of chloride salts is continuously monitored. Its application is in oil refining or in any other area where chloride salts are heated to temperatures high enough to cause hydrolysis reactions or thermal decomposition. The invention allows for a much more sophisticated and precise record of the thermal events that occur as a function of temperature. It also allows the behavior of chloride salts subjected to these conditions to be evaluated, both in model systems and in industrial saline solutions, with respect to the respective content, composition, or presence of components in the oil phase, such as carboxylic (naphthenic acids) or nitrogenous (ammonia or amines) acids.

The invention discloses a clamping and fixing device for a distillation flask. The clamping and fixing device comprises a base and a support rod, wherein the support rod is vertically arranged on the base, a clamp body comprises a fixed frame, the fixed frame is connected with the upper end of the support rod, a first clamping piece and a second clamping piece are transversely arranged at the center of the left side of the inner wall of the fixed frame, a regulating clamping head is arranged at the right side of the fixed frame, the regulating clamping head comprises a regulating shaft, a regulating sleeve and an eccentric cam, a through hole is formed in the right side of the fixed frame, the regulating sleeve is positioned in the through hole, the eccentric cam is arranged at the front end of the regulating shaft, the regulating shaft penetrates through the through hole, the eccentric cam is positioned in the fixed frame, and a flask body of the distillation flask is positioned among the first clamping piece, the second clamping piece and the eccentric cam. The clamping and fixing device overcomes the defect of poor clamping and fixing effects because an existing distillation flask easily deflects when being clamped and fixed, and the clamping and fixing device for the distillation flask is capable of clamping and fixing the flask body of the distillation flask and has good clamping and fixing effects.

The invention discloses a detection system for detecting polychlorophenol in a dye. The detection system comprises a shell and a working cavity which is defined in the shell; a rotatable connecting shaft is arranged in the working cavity; the upper end of the connecting shaft is rotationally provided with a shaft mounting block; the upper side of the connecting shaft is provided with a rotary disc; the lower end surface of the rotary disc is provided with a buffer cavity with a downward opening; the shaft mounting block is located in the buffer cavity; and a buffer spring is connected between the shaft mounting block and the inner wall of the buffer cavity. With the detection system of the invention adopted, the automation of extraction steps in a polychlorophenol detection process is realized, and a potassium carbonate solution can be automatically added into the dye, and therefore, such addition mode can improve accuracy compared with a manual addition mode; the success of subsequent detection is ensured; and detection accuracy is improved. According to the detection system of the invention, after the potassium carbonate solution is added, oscillation can be automatically carried out, and efficiency is improved.

The invention provides an apparatus (100) and a method for preparing distillation measurement of a liquid, and a liquid analysis system. The device has: a device having: a housing; a heater (101), wherein one orifice plate (103, 203a) selected from a set of standardized orifice plates (203a, 203b, 203c, 203d) can be placed on the heater, and the heater is designed to heat a container (105) which contains a liquid (107) and is placed on the orifice plate (103), in order to carry out a standardized test in order to determine the evaporation properties of the liquid; in particular, an electricalmoving system (110) which is designed to move a heater (101) and to interrupt a further movement of the heater (101) when a pressing force (F) of an orifice plate (103) placed on the heater (101) against a container (105) reaches a threshold value. By means of the device, operation errors are avoided, the orifice plate can be accurately positioned on the flask without errors, and the glass flask is prevented from being damaged due to the action of too high force transmitted from the lower portion through the orifice plate.

A distilling apparatus suitable for spherical distilling flask is disclosed, comprising a fixing frame, a heating wall, an insulating board, and a control and regulation device; the upper part of a sealed bottle cork of the spherical distilling flask is provided with a spherical coupling bushing, characterized in that the distilling apparatus also comprises: a hinging limit block which is integrated with the fixing frame of the distilling apparatus and drives the coupling bushing within the hinging limit block via a ratchet wheel. The invention fixes the coupling bushing at the time of being inserted into the hinging limit block in virtue of matching between the hinging limit block and the spherical coupling bushing at the upper part of the sealed bottle cork of the spherical distilling flask, and further utilizes the matching between shape of an opening of the insulating board and shape of the spherical distilling flask to realize positioning and alignment to the spherical distilling flask during spherical distillation tests, thus guaranteeing quality of the spherical distillation tests and improving efficiency of the distillation tests.

The invention relates to an adjustable distillation heater. The adjustable distillation heater comprises a base, a vertical member and a flask bottle, wherein the vertical member is vertically arranged on the base; the flask frame is horizontally arranged on the upper part of the vertical member; and the base is provided with an adjustable electric furnace. In the adjustable distillation heater disclosed by the invention, the base is provided with the adjustable electric furnace for replacing an original alcohol lamp, so that a heated surface at the bottom of a flask is increased during distillation heating, the heating temperature of the electric furnace can be adjusted timely as required, a heated liquid is heated more uniformly, the heating time is shortened greatly simultaneously, and the experimental safety is improved.

The invention relates to a heating hood (1). The heating hood according to the invention comprises at least one spherically formed heat transfer region (2), in particular for receiving at least partially spherical objects (4), a frame device (6), wherein the position of the heat transfer region (2) is at least partly predefined by the frame device (6), and an at least sectionally tubularly formed heating device (8), wherein the heating device (8) is arranged between the heat transfer region (2) and the framing device (6), wherein the heating device (8) at least partly encloses the heat transfer region (2) in the circumferential direction.

The invention relates to a heating reflux extraction method and a support assembly for implementing the method. The heating reflux extraction method is that during the heating reflux extraction process, the sample flask and the solvent flask are alternately connected to the condensing tube in a detachable and sealed manner to form a bottle-tube assembly. The tube assembly is erected, and under the righting condition, the bottle-tube assembly can move up and down relative to the righting device, and when the sample flask and solvent flask are replaced, the bottle-tube assembly is moved up to provide an operating space. By adopting the method, the effects of improving efficiency, increasing the accuracy of extraction results, reducing pollution to the working environment, automatically cleaning the condensation tube and preventing cross-contamination between different samples can be achieved.

An experimental stand (1) has a base (3) and support projections (4), which may themselves be support feet or be additionally provided with such support feet. In addition, support rods (2) for receiving utensils and measuring devices (12) for processing or testing media or substances or mixtures that may be contained or injected into containers (10) belong to the experimental stand (1), which (10) is placed next to the support rod (2) in the state of use and the corresponding utensil or measuring instrument can be inserted into it from above. For easy dosing of the contents of the container (10) before or during handling and / or for quick and accurate identification of weight changes, the support projection (4) is mounted in a movable manner and equipped with a weighing device or is connected thereto or Effectively connected so that when the weight changes, it is determined to strengthen the adjustment of the support feet (4) when the weight increases or reduce the weight.

A distilling apparatus suitable for spherical distilling flask is disclosed, comprising a fixing frame, a heating wall, an insulating board, and a control and regulation device; the upper part of a sealed bottle cork of the spherical distilling flask is provided with a spherical coupling bushing, characterized in that the distilling apparatus also comprises: a hinging limit block which is integrated with the fixing frame of the distilling apparatus and drives the coupling bushing within the hinging limit block via a ratchet wheel. The invention fixes the coupling bushing at the time of being inserted into the hinging limit block in virtue of matching between the hinging limit block and the spherical coupling bushing at the upper part of the sealed bottle cork of the spherical distilling flask, and further utilizes the matching between shape of an opening of the insulating board and shape of the spherical distilling flask to realize positioning and alignment to the spherical distillingflask during spherical distillation tests, thus guaranteeing quality of the spherical distillation tests and improving efficiency of the distillation tests.

The invention discloses a fixing frame for a distillation flask, which belongs to the field of laboratory equipment. The fixing frame for the distillation flask comprises a bracket and a mounting table, wherein the mounting table is slidably connected to the bracket; a first groove, a second groove and a third groove are formed in the mounting table; a lifting rod is connected into the first groove in a sliding manner; a button is connected to the top of the lifting rod; the bottom of the lifting rod is rotationally connected with a tray through a first hinge; a positioning hole is formed in the end, away from the mounting table, of the tray; a first rotating shaft is rotationally connected into the second groove; the tray is rotatably connected to the first rotating shaft, a clamping device is slidably connected into the third groove, the clamping device is connected with the lifting rod through a pull rope, symmetrical elastic clamping plates are connected to the end, away from the mounting table, of the clamping device, a roller is rotatably connected into the third groove, and the roller is matched with the clamping device and the lifting rod. The gravity of the flask is converted into a bottleneck clamping force by utilizing a lever principle, so that the flask is fixed.

A modular stand apparatus offers safe and effective setup of laboratory experiments. The apparatus allows a user to couple vertical rods to a first plate. A second plate, parallel to the first plate and vertically translating up and down the vertical rods, permits the user of any height to utilize the apparatus and the placement of an extraneous rigging such as jack, scale, etc. A plurality of horizontal rods including hypotenuse and adjacent rods detachably couples with the vertical rods and permits the placement of extraneous rigging. The horizontal rods replace monkey bars in conventional systems so that the user does not have to lean or stretch hands / arms inside a fume hood, thus eliminating potential unsafe operations and / or physical injuries. Due to the use of a larger and more stable surface of the second plate over the extraneous rigging, the apparatus eliminates possible toppling over and / or system collapsing.

The invention provides a chemical experiment distillation apparatus. The apparatus comprises a flask mounted on a first support, a condensing tube mounted on a second support, a thermometer, a liquid catching bottle, and a gas pipe through which the flask is connected to the condensing tube, an infusion tube through which the condensing tube is connected to the liquid catching bottle, a heater mounted on the first support, located right below the flask and provided with a heating cavity with an opening towards to the flask, and electric heating wires arranged on the inner peripheral side of the heating cavity; the heating cavity is matched with a flasket body at the lower end of the flask, and covers at least 2 / 3 of the flasket body; the flask, the gas pipe, the condensing tube, the infusion tube and the liquid catching bottle are sequentially arranged along the gas flowing direction; the thermometer is installed in the gas pipe in a sealed mode, and the lower end of the thermometer is placed in the flask. During the distillation experiment process, the lower end portion of the flask, containing liquid, is covered by the heating cavity of the heater, therefore, heating is even and efficient, and the heating efficiency of the liquid is improved. The way of using the electric heating wires to heat is adopted, thus open flames and polluting gases are not produced.

The invention discloses a glass distillation separation vessel stabilizing frame, which comprises a bottom support, position adjusting supporting legs, a circular-ring-shaped sliding rail, a sliding block, a stand column, a supporting rod, a screw joint position adjusting piece, a cross beam, a C-shaped clamping part and a rotating shaft positioning piece. A semi-sunken groove is formed in the middle area of the upper surface of the bottom support; an annular sliding rail is fixedly embedded into the inner side of the semi-sunken groove; the sliding block is mounted on the annular sliding rail; one end of the supporting rod is fixedly installed on the sliding block; the supporting rod and the sliding block can move along the annular sliding rail; the bottom of the stand column is installedin the center of the upper half sinking groove of the bottom support in a threaded connection mode; one end of the cross beam is connected with the stand column through the threaded connection position adjusting piece; and the C-shaped clamping part is installed at the other end of the cross beam through the rotating shaft positioning piece. The angle of the clamping part in the stabilizing framecan be adjusted according to the inclination degree of the glass distillation separation vessel, so that the requirements for stabilizing and positioning the vessel with the circular horizontal crosssection are met, compatibility is high, and the glass distillation separation vessel stabilizing frame is suitable for being used and popularized as a limiting stabilizing frame in a laboratory.

The invention provides a fractionation device for an organic chemistry experiment, the fractionation device comprises a water bath barrel, a raw material bottle, a fractionating column, an adjusting mechanism, a fraction collecting mechanism and a control box, the fraction collecting mechanism comprises a cooling pipe, a collecting bottle, an electromagnetic valve, a digital display screen and a refractive index detection mechanism, the water bath barrel heats the raw material bottle, so that a liquid mixture in the raw material bottle is evaporated, evaporated fractions can enter the fractionating column, different fractions can be collected through the cooling pipes with different heights arranged on the fractionating column, the fractionating efficiency is improved, the refractive index detection mechanism can detect the refractive index of fraction liquid in the collecting bottle, the control box sorts the refractive indexes of the fraction liquid in all the collection bottles according to data transmitted by the refractive index detection mechanism, and displays a corresponding digital sequence on the digital display screen, so that students can discriminate and inspect the fraction liquid in the collection bottles after the experiment is finished.

The invention discloses a detection system of polychlorophenol in dye, including a shell and a working chamber arranged in the shell, wherein the working chamber is provided with a rotatable connecting shaft, the upper end of the connecting shaft, is rotatably provided with a shaft mounting block, the upper side of the connecting shaft is provided with a rotary table, the lower end face of the rotary table is provided with a buffer chamber with a downward opening, and the shaft mounting block is located in the buffer chamber. The invention realizes the automation of the extraction step in the detection process of polychlorophenol, and can automatically add potassium carbonate solution to the dye. Compared with manual addition, the invention improves the accuracy, ensures the success of subsequent detection and improves the accuracy of detection. After the addition of potassium carbonate solution, the invention can Automatic oscillation improves efficiency.