Sample filtering and screening device for chemical laboratory

Abstract

The utility model discloses a sample filtering and screening device for a chemical laboratory in the related technical field of chemical experiment equipment, which comprises a screening box, four corners of the bottom of the screening box are fixedly connected with support columns, the top of the screening box is provided with a fixed cover, a conical groove is inserted in the middle of the fixed cover, and the conical groove is provided with a through hole. A conical groove is formed in the bottom of the screening box, an inserting hole matched with the conical groove is formed in the fixing cover, a discharging pipe is inserted into the bottom of the screening box, a discharging valve is installed on the left side of the discharging pipe, qualified samples after screening are conveniently collected through the discharging pipe and the discharging valve, through the screening mechanism, powder is finer through two-stage screening, and the screening effect is good; and an eccentric wheel is driven by a motor to rotate, so that the eccentric wheel drives a screen to shake up and down, the screening effect of the device is improved, and large-particle samples screened by the screening mechanism are conveniently and rapidly collected through a collecting tank and a storage drawer.

Description

Technical Field

[0001] The utility model relates to the technical field related to chemical experimental equipment, in particular to a sample filtering and screening device for a chemical laboratory. Background Art

[0002] The chemical laboratory is an important place for providing chemical experimental conditions and conducting scientific research. It contains a large number of instruments: iron stands, asbestos nets, alcohol lamps and other experimental tools. It is usually equipped with a chemical cabinet, which contains commonly used chemicals, such as copper sulfate pentahydrate (CuSO4·5H2O, also known as copper sulfate), sodium hydroxide solution, limestone, hydrochloric acid, etc.

[0003] A sample filtering and screening device for a chemical laboratory with announcement number CN213700766U includes a main support frame and a processing body. Two filtering and screening basins are arranged in the machine cavity of the processing body, which are named as a first-level screening basin and a second-level screening basin respectively. The rod body of the lifting reciprocating rod is adapted to penetrate the supporting lifting arm and the bottom ends of the lifting reciprocating rods on the left and right sides are correspondingly fixed on the reciprocating pressure drop plate. The wheel surface of the push plate cam is arranged forward and the wheel edge surface of the bottom end thereof is correspondingly in contact with the reciprocating pressure drop plate. Each horizontal guide sliding rod is correspondingly fixed horizontally on a support seat and an extrusion spring is correspondingly horizontally sleeved on each rod body. A push buckle cam is correspondingly arranged on the right side of the pressure buckle in a mutually intrusive form. The wheel surface of the push buckle cam is arranged upward and its wheel body is correspondingly installed on the supporting rotating shaft in a fixed form. The utility model accelerates the filtering and screening effect of sample powder, and the two-stage screening makes the powder finer and the screening effect is good. However, during the screening process, the above-mentioned device adopts the method of driving the screening box to shake up and down for screening. During the screening, a large number of components are required to drive the screening box to shake up and down for screening, which greatly increases the production cost of the device and is not conducive to popularization and use. Moreover, it is difficult to quickly collect the stratified large particle samples after screening. The screening box needs to be disassembled to collect the stratified large particle samples inside. The convenience of use is limited. Therefore, it is necessary to provide a new sample filtering and screening device for chemical laboratories to solve the above technical problems. Utility Model Content

[0004] Therefore, the purpose of the utility model is to provide a sample filtering and screening device for chemical laboratories, which can solve the problem that the existing device uses a screening box to shake up and down for screening during the screening process, and a large number of components are needed to drive the screening box to shake up and down for screening, which greatly increases the production cost of the device and is not conducive to popularization and use. In addition, it is difficult to quickly collect the stratified large particle samples after screening, and the screening box needs to be disassembled before the internal stratified large particle samples can be collected, which has limited convenience of use. In order to solve the above technical problems, the utility model provides a sample filtering and screening device for chemical laboratories, which adopts the following technical scheme: A sample filtering and screening device for chemical laboratories, comprising:

[0005] A screening box, wherein the four corners of the bottom of the screening box are fixedly connected with support columns, a fixed cover is installed on the top of the screening box, a conical groove is inserted in the middle of the fixed cover, and the fixed cover is provided with a socket matched with the conical groove, a discharge pipe is inserted at the bottom of the screening box, a discharge valve is installed on the left side of the discharge pipe, two groups of screening mechanisms are installed in the inner cavity of the screening box, and the front ends of the two groups of screening mechanisms are provided with collecting grooves, the collecting grooves are fixedly connected to the screening box, and the collecting grooves are provided with mounting ports matched with the screening mechanisms, a storage drawer is inserted in the middle of the front end of the collecting groove, and a handle is fixedly connected to the middle of the front end of the storage drawer.

[0006] By adopting the above technical scheme, by providing a discharge pipe and a discharge valve, it is convenient to collect qualified samples after screening, and by providing a screening mechanism, it is convenient to make the powder finer through two-stage screening and the screening effect is good. The eccentric wheel is driven by a motor to rotate, so that the eccentric wheel drives the screen to swing up and down, thereby improving the screening effect of the device. Through the collection trough and the storage drawer, the large particle samples screened by the screening mechanism can be quickly collected.

[0007] Optionally, a slope is provided at the middle bottom of the inner cavity of the screening box.

[0008] By adopting the above technical solution, a slope is opened at the middle bottom of the inner cavity of the screening box, so that qualified samples after screening can be slid into the discharge pipe, qualified samples can be collected quickly, and samples can be prevented from remaining at the bottom of the screening box.

[0009] Optionally, a clamping block is connected to the bottom of the fixed cover, and the screening box is provided with a clamping slot adapted to the clamping block, and the fixed cover and the screening box form a clamping connection mechanism.

[0010] By adopting the above technical solution, the fixed cover and the screening box form a snap-fit ​​connection mechanism, which makes it easy to disassemble the fixed cover and the screening box, thereby cleaning the inside of the screening box.

[0011] Optionally, the screening mechanism includes a screen installed in the inner cavity of a screening box, baffles are fixedly connected to the left and right sides of the upper surface of the screen, eccentric wheels are fixedly connected to the left and right sides of the upper end of the screen, the left side of the left eccentric wheel is connected to the power output end of the motor, and the motor runs through the screening box, the right side of the right eccentric wheel is fixedly connected to a rotating shaft, and the rotating shaft and the screening box form a rotating connection mechanism, and a spring is fixedly connected to the bottom of the front end of the screen, and the bottom of the spring is fixedly connected to the collecting trough.

[0012] By adopting the above technical scheme and providing a screen, it is convenient to make the powder finer through two-stage screening and the screening effect is good. By providing a spring, it is ensured that the screen does not affect the up and down shaking of the screen when it plays a load-bearing role, thereby improving the practicality of the device. By providing a motor and an eccentric wheel, the eccentric wheel is driven by the motor to rotate, so that the eccentric wheel drives the screen to shake up and down, thereby improving the screening effect of the device. Moreover, the device does not need to consume too many components to drive the screen to shake up and down, which greatly saves the production cost of the device and is suitable for popularization and use.

[0013] Optionally, the screen has an inclination angle of 20 to 35 degrees.

[0014] By adopting the above technical solution, the screen is tilted at an angle of 20 to 35 degrees, so that during the screening process, the screened large particle samples can slide into the storage drawer for collection, without opening the inside of the screening box and relying on manual collection, thereby improving the convenience of collection of the device.

[0015] Optionally, the diameter of the screening holes of the upper screen is larger than that of the lower screen.

[0016] By adopting the above technical solution, the diameter of the screening hole of the upper screen is larger than that of the lower screen, so that the powder is finer through two-stage screening and the screening effect is good.

[0017] Optionally, the collecting trough is provided with a slide groove adapted to the storage drawer, the collecting trough and the storage drawer form a sliding connection mechanism, and the rear end of the storage drawer is provided with a placement opening adapted to the screening mechanism.

[0018] By adopting the above technical solution, by providing a collection trough and a storage drawer, it is convenient to quickly collect large particle samples screened by the screening mechanism. A placement opening compatible with the screening mechanism is opened at the rear end of the storage drawer, which facilitates the storage drawer to be connected with the screening mechanism, ensuring that large particle samples can slide into the storage drawer for collection.

[0019] In summary, the present invention has at least one of the following beneficial effects:

[0020] 1. The present application is provided with a screening mechanism, and the screen is used to facilitate two-stage screening to make the powder finer and the screening effect is good. The baffle is provided to prevent the sample from falling from both sides of the screen during the screening process, thereby affecting the quality after screening. The motor and the eccentric wheel are provided, and the eccentric wheel is driven by the motor to rotate, so that the eccentric wheel drives the screen to shake up and down, thereby improving the screening effect of the present device. The present device does not need to consume too many components to drive the screen to shake up and down, which greatly saves the production cost of the present device and is suitable for popularization and use.

[0021] 2. By providing a collection trough and a storage drawer, it is convenient to quickly collect large particle samples screened by the screening mechanism. By setting the screen at an inclined angle, the screened large particle samples can slide into the storage drawer for collection during the screening process. There is no need to open the inside of the screening box and rely on manual collection, which improves the convenience of collection of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is a schematic diagram of the use state of the utility model;

[0024] Figure 2 This is a schematic diagram of the disassembly structure of the components of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the utility model;

[0026] Figure 4 This is a schematic diagram of the screening mechanism structure of the utility model.

[0027] Explanation of the reference numerals in the accompanying drawings: 1. Screening box; 2. Support column; 3. Fixed cover; 4. Conical groove; 5. Discharge pipe; 6. Discharge valve; 7. Screening mechanism; 701. Screen; 702. Baffle; 703. Eccentric wheel; 704. Motor; 705. Rotating shaft; 706. Spring; 8. Collecting trough; 9. Storage drawer; 10. Handle. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-4 The utility model is described in further detail.

[0029] Example 1, reference Figure 1 , Figure 2 and Figure 3The utility model discloses a sample filtering and screening device for a chemical laboratory, which can solve the problem that it is difficult to quickly collect large particle samples after stratification in the existing device after sieving, and the screening box needs to be disassembled before the large particle samples after stratification inside can be collected, and the convenience of use is limited, including:

[0030] A screening box 1, the four corners of the bottom of the screening box 1 are fixedly connected with support columns 2, a fixed cover 3 is installed on the top of the screening box 1, a conical groove 4 is inserted in the middle of the fixed cover 3, and the fixed cover 3 is provided with a plug hole adapted to the conical groove 4, a discharge pipe 5 is inserted at the bottom of the screening box 1, a discharge valve 6 is installed on the left side of the discharge pipe 5, two groups of screening mechanisms 7 are installed in the inner cavity of the screening box 1, and a collecting tank 8 is arranged at the front end of the two groups of screening mechanisms 7, the collecting tank 8 is fixedly connected to the screening box 1, and the collecting tank 8 is provided with a plug hole adapted to the screening mechanism 7 An installation port is provided, a storage drawer 9 is inserted in the middle of the front end of the collecting groove 8, a handle 10 is fixedly connected to the middle of the front end of the storage drawer 9, an inclined surface is provided at the middle bottom of the inner cavity of the screening box 1, a card block is connected to the bottom of the fixed cover 3, the screening box 1 is provided with a card slot matched with the card block, the fixed cover 3 and the screening box 1 form a card connection mechanism, the collecting groove 8 is provided with a slide groove matched with the storage drawer 9, the collecting groove 8 and the storage drawer 9 form a sliding connection mechanism, and the rear end of the storage drawer 9 is provided with a placement port matched with the screening mechanism 7.

[0031] Working principle: screening box 1 is convenient for placing laboratory samples for screening, support column 2 is convenient for bearing weight and providing height, fixed cover 3 ensures the closure of screening box 1 and installation of conical slot 4, conical slot 4 is convenient for laboratory samples to be accurately poured into screening mechanism 7 for screening, discharge pipe 5 and discharge valve 6 are convenient for collecting qualified samples after screening, screening mechanism 7 is convenient for making powder finer through two-stage screening, and the screening effect is good, and the eccentric wheel 703 is driven by motor 704 to rotate, so that the eccentric wheel 703 drives the screen 70 1 is shaken up and down, which improves the screening effect of the device. The collecting groove 8 and the storage drawer 9 are convenient for quickly collecting the large particle samples screened by the screening mechanism 7. The grip 10 is convenient for pulling out the storage drawer 9. When in use, the screen 701 is set to an inclined angle, so that during the screening process, the screened large particle samples can slide into the storage drawer 9 for collection. After screening, the storage drawer 9 can be pulled out to store the large particle samples inside. There is no need to open the inside of the screening box 1 and rely on manual collection, which improves the convenience of collection of the device.

[0032] Example 2, reference Figure 3 and Figure 4In this embodiment, the problem that the existing device uses a screen box to shake up and down for screening during the screening process is solved. During the screening, a large number of components are required to drive the screen box to shake up and down for screening, which greatly increases the production cost of the device and is not conducive to popularization and use. The sample filtering and screening device for a chemical laboratory also includes a screening mechanism 7 including a screen 701 installed in the inner cavity of the screening box 1, and baffles 702 are fixedly connected to the left and right sides of the upper surface of the screen 701, and the left and right sides of the upper end of the screen 701 are fixed An eccentric wheel 703 is connected, the left side of the left eccentric wheel 703 is connected to the power output end of the motor 704, and the motor 704 runs through the screening box 1, the right side of the right eccentric wheel 703 is fixedly connected to a rotating shaft 705, and the rotating shaft 705 and the screening box 1 form a rotating connection mechanism, the front bottom of the screen 701 is fixedly connected to a spring 706, the bottom of the spring 706 is fixedly connected to the collecting trough 8, the inclination angle of the screen 701 is 20 to 35 degrees, and the screening hole diameter of the upper screen 701 is larger than that of the lower screen 701.

[0033] Working principle: When screening samples, after placing the device in a suitable position, pour the samples into the conical groove 4 to ensure that the samples to be screened can accurately fall on the screening mechanism 7 for screening. After the samples enter, turn on the motor 704, and drive the eccentric wheel 703 to rotate through the motor 704, so that the eccentric wheel 703 drives the screen 701 to shake up and down, thereby improving the screening effect of the device. By providing a baffle 702, it is prevented that the sample falls from both sides of the screen 701 during the screening process, thereby affecting the quality after screening. By providing a spring 706, it is ensured that the screen 701 does not affect the up and down shaking of the screen 701 when it plays a load-bearing role, thereby improving the practicality of the device. After screening, open the discharge valve 6, and collect the qualified samples of various sizes through the discharge pipe 5. The device does not need to consume too many components to drive the screening to shake up and down, which greatly saves the production cost of the device and is suitable for promotion and use.

[0034] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A sample filtering and screening device for chemical laboratories, characterized in that: include, A screening box (1), wherein the four corners of the bottom of the screening box (1) are fixedly connected to support columns (2), a fixed cover (3) is installed on the top of the screening box (1), a conical groove (4) is inserted in the middle of the fixed cover (3), and the fixed cover (3) is provided with a plug hole compatible with the conical groove (4), a discharge pipe (5) is inserted in the bottom of the screening box (1), and a discharge valve (6) is installed on the left side of the discharge pipe (5), two groups of screening mechanisms (7) are installed in the inner cavity of the screening box (1), and the front ends of the two groups of screening mechanisms (7) are provided with collecting grooves (8), the collecting grooves (8) are fixedly connected to the screening box (1), and the collecting grooves (8) are provided with a mounting port compatible with the screening mechanism (7), a storage drawer (9) is inserted in the middle of the front end of the collecting groove (8), and a handle (10) is fixedly connected to the middle of the front end of the storage drawer (9).

2. A sample filtering and screening device for chemical laboratories according to claim 1, characterized in that: The bottom middle of the inner cavity of the screening box (1) is provided with an inclined surface.

3. A sample filtering and screening device for chemical laboratories according to claim 1, characterized in that: A clamping block is connected to the bottom of the fixed cover (3), and the screening box (1) is provided with a clamping slot adapted to the clamping block. The fixed cover (3) and the screening box (1) form a clamping connection mechanism.

4. A sample filtering and screening device for chemical laboratories according to claim 1, characterized in that: The screening mechanism (7) comprises a screen (701) installed in the inner cavity of a screening box (1), baffles (702) are fixedly connected to the left and right sides of the upper surface of the screen (701), eccentric wheels (703) are fixedly connected to the left and right sides of the upper end of the screen (701), the left side of the left eccentric wheel (703) is connected to the power output end of a motor (704), and the motor (704) runs through the screening box (1), the right side of the right eccentric wheel (703) is fixedly connected to a rotating shaft (705), and the rotating shaft (705) and the screening box (1) form a rotating connection mechanism, and the front bottom of the screen (701) is fixedly connected to a spring (706), and the bottom of the spring (706) is fixedly connected to the collecting trough (8).

5. A sample filtering and screening device for chemical laboratories according to claim 4, characterized in that: The screen (701) has an inclination angle of 20 to 35 degrees.

6. A sample filtering and screening device for chemical laboratories according to claim 4, characterized in that: The diameter of the screening holes of the upper screen (701) is larger than that of the lower screen (701).

7. A sample filtering and screening device for chemical laboratories according to claim 1, characterized in that: The collecting trough (8) is provided with a sliding groove matched with the storage drawer (9); the collecting trough (8) and the storage drawer (9) form a sliding connection mechanism; and the rear end of the storage drawer (9) is provided with a placement opening matched with the screening mechanism (7).

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