A device and method for separating spherical particles and broken particles

Abstract

The present invention relates to a separation device and method for spherical particles and broken particles, wherein the separation device comprises a storage funnel, a direction-changing acceleration tube, an inclined separation plate, a horizontal buffer plate and a collection tank, and the angle between the inclined separation plate and the horizontal buffer plate is adjusted by an electric push rod, so that the spherical particles in the ion exchange resin can roll down along the inclined separation plate and the horizontal buffer plate and finally enter the collection tank, while the broken particles cannot roll down from the inclined separation plate, and the spherical particles are separated from the broken particles after so many cycles of separation. After the experiment is over, the broken resin is scraped from the inclined separation plate to the horizontal buffer plate by a scraper, and finally taken out in a centralized manner through the collection tank. The present invention can greatly save the time and manpower investment for separating spherical particles from broken particles, has a good separation effect, and has simple equipment, low cost and high practicality, and provides a new operating device and experimental method for the determination of the spherical rate of ion exchange resin in the laboratory.

Description

Technical Field

[0001] The invention relates to the technical field of resin separation equipment, and in particular to a device and method for separating spherical particles from broken particles. Background Art

[0002] Ion exchange resin is a kind of high molecular compound with a network structure and active groups. It is widely used in the softening treatment of circulating cooling water and make-up water in thermal power plants, the desalination treatment of boiler feed water, and the fine treatment of condensate in water vapor systems. Therefore, the performance indicators of ion exchange resin directly affect the normal operation of the water treatment system. The performance indicators of ion exchange resin mainly include particle size, density, water content, swelling and transformation volume change rate, exchange capacity, and mechanical strength.

[0003] The mechanical strength of the resin refers to the ability of the resin to resist damage under the action of various mechanical forces, including its wear resistance, resistance to penetration and impact, etc. In actual applications, the resin particles may break due to friction, extrusion, high temperature, oxidation, and periodic transformation, which causes its volume expansion and contraction, thus affecting the service life of the resin. GB / T12598-2001 "Determination of the Sphericity of Ion Exchange Resins after Grinding and the Sphericity of Post-Grinding" stipulates that the post-grinding sphericity and the osmotic grinding sphericity are used to judge the mechanical strength of the resin. After the resin is tumbled and dried, the spherical particles and the broken particles need to be separated, and finally the sphericity is calculated after weighing.

[0004] At present, the method of separating the spherical particles and broken particles of the resin is mainly manual separation. The manual separation method is to place the resin sample in the upper left corner of the enamel plate, raise the upper edge of the enamel plate to tilt the enamel plate, and the tilt angle can make the spherical particles roll down in a slight vibration while the broken particles cannot roll down. Use a brush to gently move a small part of the resin to separate the spherical particles from the broken particles, and brush the broken particles to the upper right corner of the enamel plate until all the samples are separated. The disadvantages are that it is time-consuming and labor-intensive, and the brush will be stuck with the resin, resulting in inaccurate measurement. Therefore, in view of the above technical defects, it is urgent to develop a device that can quickly and accurately separate the spherical particle resin. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a device and method for separating spherical particles from broken particles in the determination of the spherical rate of ion exchange resins, thereby reducing manpower, improving efficiency, and reducing costs, improving practicality, and facilitating application and promotion.

[0006] The specific contents are as follows: A device for separating spherical particles from broken particles, the device comprises a storage funnel, a direction-changing accelerating tube, an inclined separation plate, a horizontal buffer plate and a collecting tank, and is characterized in that:

[0007] The horizontal buffer plate is horizontally arranged and supported by supporting legs. The horizontal buffer plate is a thin plate in a rectangular shape. Support legs are arranged at the four corners of the horizontal buffer plate. A collecting groove inclined along its length direction is arranged at the front edge of the horizontal buffer plate. The length of the collecting groove is equal to the length of the horizontal buffer plate, and the upper edge of the inner side plate of the collecting groove is smoothly connected to the front edge of the horizontal buffer plate. The left and right end surfaces of the horizontal buffer plate are both provided with a first plastic baffle plate, and the first plastic baffle plate corresponding to the higher end of the collecting groove extends and is connected to the outer side plate of the collecting groove, and the lower end of the collecting groove is an open discharge port;

[0008] The lower edge of the inclined separation plate is hinged on the rear edge of the horizontal buffer plate through a hinge shaft, the hinge shaft is located at the two end surfaces of the inclined separation plate and is rotatably connected with the corresponding first plastic baffle, the lower edge of the inclined separation plate is an arc shape coaxial with the hinge shaft, the lower edge of the arc shape is in contact with and tangent to the upper surface of the horizontal buffer plate, a bracket is provided below the inclined separation plate, the bracket is fixed to the side of the supporting leg, at least two identical and corresponding parallel electric push rods are hinged on the bracket, the free end of each electric push rod is hinged on the lower surface of the inclined separation plate, second plastic baffles are provided at both ends and the upper edge of the inclined separation plate, and the second plastic baffles at both ends of the inclined separation plate are respectively parallel and closely attached to the inner side surface of the first plastic baffle on the corresponding side;

[0009] The storage funnel is supported by a horizontal round iron ring, which is fixed to a guide sleeve through a support arm. The guide sleeve is coaxially sleeved on a vertical support guide rod and matched to form a sliding pair. The guide sleeve is fixed to the support guide rod through a locking bolt that is threaded and passes through its side wall. The lower end of the support guide rod is vertically fixed to a disc-shaped base. The lower end of the storage funnel is provided with a connecting pipe that extends downward and is connected to its interior. The middle part of the connecting pipe is provided with a regulating valve for controlling the opening of its cross-section. The lower end of the connecting pipe is connected to a detachable transparent observation tube. The lower end of the transparent observation tube is connected to an arc-shaped direction-changing acceleration tube. The lower end of the direction-changing acceleration tube extends horizontally above the inclined separation plate and is tangent to the upper surface of the inclined separation plate. The direction-changing acceleration tube is fixed at the corner of the upper edge of the inclined separation plate.

[0010] Preferably, the inclined separation plate is an enameled iron plate.

[0011] Preferably, the horizontal buffer plate is a glass plate.

[0012] Preferably, the bottom of the collecting tank is made of glass.

[0013] Preferably, a support column is provided below the collecting tank.

[0014] Preferably, the transparent observation tube is made of transparent glass.

[0015] A separation method using the above-mentioned device for separating spherical particles from broken particles comprises the following steps:

[0016] ① According to the particle size of the ion exchange resin to be separated, the angle between the inclined separation plate and the horizontal buffer plate is adjusted by the electric push rod, so that the spherical particles in the ion exchange resin that have been dried and can roll freely can roll out of the direction-changing acceleration tube, pass through the inclined separation plate and the horizontal buffer plate, and then roll into the inclined collection tank, while ensuring that the broken particles cannot roll down from the inclined separation plate;

[0017] ② According to the particle size of the ion exchange resin to be separated, the length of the transparent observation tube is adjusted so that after the spherical particles in the ion exchange resin that have been dried and can roll freely roll out of the direction-changing acceleration tube, the spherical particles in the ion exchange resin roll the farthest distance on the inclined separation plate and do not contact the second plastic baffle;

[0018] ③ Operate the regulating valve to close the connecting pipe at the lower end of the storage funnel, and place a weighing cup A for collecting spherical particles at the outlet of the collecting tank;

[0019] ④ Load the ion exchange resin to be separated into the storage funnel, open and control the opening of the regulating valve, and make the opening of the regulating valve in a moderate state by observing the transparent observation tube and the dispersion degree of the resin particles on the inclined separation plate;

[0020] ⑤ After all the resin particles in the storage funnel are discharged, all the resin particles that have not entered the collecting tank are collected and transferred to the storage funnel for separation again, and the separation is repeated until no spherical particles enter the collecting tank;

[0021] ⑥ Move the weighing cup A containing the spherical particles away from the discharge port of the collecting tank, and then take a weighing cup B and place it at the discharge port of the collecting tank. Use a scraper to scrape all the resin particles that have not entered the collecting tank into the collecting tank, and then scrape them into weighing cup B. The separation of the spherical particles and the broken particles in the ion exchange resin is completed.

[0022] Beneficial technical effects of the present invention: The present invention is a device and method for separating spherical particles from broken particles, wherein the separation device comprises a storage funnel, a direction-changing accelerating tube, an inclined separation plate, a horizontal buffer plate and a collecting tank. Firstly, the present invention adjusts the angle between the inclined separation plate and the horizontal buffer plate, as well as the height of the storage funnel, i.e., the length of the transparent observation tube, according to the size of the ion exchange resin particles to be separated, so that it can be used to separate resins of particle sizes within a certain range, and it is flexible to use, has good adaptability, and is easy to promote and apply; secondly, a transparent observation tube is provided between the storage funnel and the direction-changing accelerating tube, so that the density of the falling resin particles can be visually observed, so as to prevent the resin particles from being too dense and avoid the resin particles from being too dense. The invention can greatly save the time and manpower input for separating spherical particles from broken particles, and has good separation effect. Meanwhile, the equipment is simple, low-cost and highly practical, and it provides a new operating device and experimental method for determining the spherical rate of ion exchange resin in the laboratory. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the three-dimensional structure of a device for separating spherical particles from broken particles Figure 1 ;

[0024] Figure 2 A schematic diagram of the three-dimensional structure of a device for separating spherical particles from broken particles Figure 2 ;

[0025] Figure 3 It is a three-dimensional structural schematic diagram of a storage hopper and its attached connecting parts;

[0026] Figure 4 It is a left view of the hinged connection between the inclined separation plate and the horizontal buffer plate;

[0027] Figure 5 for Figure 4 A is a partial enlarged schematic diagram;

[0028] Figure 6 for Figure 5 A schematic cross-sectional structure diagram of ;

[0029] In the figure: 11. base, 12. support guide rod, 13. guide sleeve, 14. locking bolt, 15. support arm, 16. round iron ring, 17. storage funnel, 18. regulating valve, 19. connecting pipe, 20. transparent observation tube, 21. direction-changing acceleration tube, 22. inclined separation plate, 23. second plastic baffle, 24. horizontal buffer plate, 25. first plastic baffle, 26. support leg, 27. discharge port of collecting trough, 28. support, 29. bracket, 30. electric push rod, 32. collecting trough, 33. hinge shaft. DETAILED DESCRIPTION

[0030] Example 1, see Figure 1-6 , a separation device for spherical particles and broken particles, the device comprising a storage funnel, a direction-changing accelerating tube, an inclined separation plate, a horizontal buffer plate and a collecting tank;

[0031] The horizontal buffer plate is horizontally arranged and supported by supporting legs. The horizontal buffer plate is a thin plate in a rectangular shape. Support legs are arranged at the four corners of the horizontal buffer plate. A collecting groove inclined along its length direction is arranged at the front edge of the horizontal buffer plate. The length of the collecting groove is equal to the length of the horizontal buffer plate, and the upper edge of the inner side plate of the collecting groove is smoothly connected to the front edge of the horizontal buffer plate. The left and right end surfaces of the horizontal buffer plate are both provided with a first plastic baffle plate, and the first plastic baffle plate corresponding to the higher end of the collecting groove extends and is connected to the outer side plate of the collecting groove, and the lower end of the collecting groove is an open discharge port;

[0032] The lower edge of the inclined separation plate is hinged on the rear edge of the horizontal buffer plate through a hinge shaft, and the hinge shaft is located at the two end surfaces of the inclined separation plate and is rotatably connected with the corresponding first plastic baffle plate. The lower edge of the inclined separation plate is an arc shape coaxial with the hinge shaft, and the lower edge of the arc shape contacts and is tangent to the upper surface of the horizontal buffer plate, ensuring that the angle between the inclined separation plate and the horizontal buffer plate is flexibly adjusted and there is no gap at the contact position. A bracket is provided below the inclined separation plate, and the bracket is fixed to the side of the supporting leg. At least two identical and corresponding parallel electric push rods are hinged on the bracket, and the free end of each electric push rod is hinged on the lower surface of the inclined separation plate. Second plastic baffle plates are provided at both ends and the upper edge of the inclined separation plate, and the second plastic baffle plates at both ends of the inclined separation plate are respectively parallel and closely attached to the inner side surface of the first plastic baffle plate on the corresponding side.

[0033] The storage funnel is supported by a horizontal round iron ring, which is fixed to a guide sleeve through a support arm. The guide sleeve is coaxially sleeved on a vertical support guide rod and matched to form a sliding pair. The guide sleeve is fixed to the support guide rod through a locking bolt that is threaded and penetrates its side wall. The lower end of the support guide rod is vertically fixed to a disc-shaped base. The lower end of the storage funnel is provided with a connecting pipe that extends downward and is connected to its interior. The middle part of the connecting pipe is provided with a regulating valve for controlling the opening of its cross-section. The lower end of the connecting pipe is connected to a detachable transparent observation tube. The transparent observation tube is made of transparent glass. The glass material has better transparency and is more convenient for observing the density and consistency of the resin in the tube. The lower end of the transparent observation tube is connected to an arc-shaped direction-changing acceleration tube. The lower end of the direction-changing acceleration tube extends horizontally above the inclined separation plate and is tangent to the upper surface of the inclined separation plate. The direction-changing acceleration tube is fixed at the corner of the edge of the inclined separation plate.

[0034] The inclined separation plate is an enameled iron plate, the horizontal buffer plate is a glass plate, and the bottom of the collecting tank is made of glass. Since the surface roughness of the enameled iron plate is moderate, the rolling friction of the broken particles is large and they cannot roll down from the enameled iron plate. The spherical particles can roll down freely under the action of gravity. The horizontal buffer plate and the bottom of the collecting tank are both made of glass. Since the surface roughness of glass is small, it is conducive to the rapid passage of the spherical resin rolling down the enameled iron plate, and it is conducive to the rapid rolling of the spherical resin into the weighing cup.

[0035] A support column is provided below the collecting tank, and the support column is used to increase the stability and firmness of the collecting tank.

[0036] Example 2, see Figure 1-6 , a separation method using a separation device for separating spherical particles and broken particles as described in Example 1, the method comprises the following steps:

[0037] ① According to the particle size of the ion exchange resin to be separated, the angle between the inclined separation plate and the horizontal buffer plate is adjusted by the electric push rod, so that the spherical particles in the ion exchange resin that have been dried and can roll freely can roll out of the direction-changing acceleration tube, pass through the inclined separation plate and the horizontal buffer plate, and then roll into the inclined collection tank, while ensuring that the broken particles cannot roll down from the inclined separation plate;

[0038] ② According to the particle size of the ion exchange resin to be separated, the length of the transparent observation tube is adjusted so that after the spherical particles in the ion exchange resin that have been dried to be able to roll freely roll out of the reversing acceleration tube, the spherical particles in the ion exchange resin roll the farthest distance on the inclined separation plate and do not contact the second plastic baffle; the inclination angle of the inclined separation plate is determined based on the maximum inclination angle at which the spherical particles can roll freely from the upper edge of the inclined separation plate, while the broken particles cannot roll down from the inclined separation plate. After the inclination angle of the inclined separation plate is determined, the time for the spherical particles to roll freely from the upper edge of the inclined separation plate to the horizontal buffer plate is also determined. It is determined that the resin has an initial horizontal velocity after passing through the arc-shaped changing direction accelerating tube. The greater the initial velocity, the farther the broken resin rolls on the upper edge of the inclined separation plate, which is beneficial to avoid the impact of subsequent spherical particles. However, if the initial velocity is too large, the spherical particles will touch the second plastic baffle, causing a series of adverse effects such as rebound. Therefore, the initial horizontal velocity of the resin particles needs to be moderate. The length of the transparent observation tube can control the initial horizontal velocity of the resin particles. The longer the transparent observation tube, the greater the initial horizontal velocity of the resin particles. Therefore, under the condition that the spherical particles will not touch the second plastic baffle, the length of the transparent observation tube should be increased as much as possible to increase the initial horizontal velocity of the resin particles.

[0039] ③ Operate the regulating valve to close the connecting pipe at the lower end of the storage funnel, and place a weighing cup A for collecting spherical particles at the outlet of the collecting tank;

[0040] ④ Load the ion exchange resin to be separated into the storage funnel, open and control the opening of the regulating valve, and keep the opening of the regulating valve in a moderate state by observing the transparent observation tube and the dispersion degree of the resin particles on the inclined separation plate; control the opening of the regulating valve to make the falling speed of the resin particles moderate to ensure that there is no violent collision between the resin particles; after passing through the transparent observation tube, the resin particles enter the arc-shaped changing direction acceleration tube, and then have a horizontal initial velocity. The resin particles perform a quasi-parallel motion on the inclined separation plate. Since the rolling friction between the spherical particles and the broken particles is different, the quasi-parallel motion trajectory is also different, thereby realizing the separation of the spherical particles and the broken particles on the inclined separation plate. After passing through the horizontal buffer plate, the spherical particles roll into the inclined collection trough, and then roll into the weighing cup.

[0041] ⑤ After all the resin particles in the storage funnel are discharged, all the resin particles that have not entered the collecting tank are collected and transferred to the storage funnel for separation again, and the separation is repeated until no spherical particles enter the collecting tank;

[0042] ⑥ Move the weighing cup A containing the spherical particles away from the discharge port of the collecting tank, and then take a weighing cup B and place it at the discharge port of the collecting tank. Use a scraper to scrape all the resin particles that have not entered the collecting tank into the collecting tank, and then scrape them into weighing cup B. The separation of the spherical particles and the broken particles in the ion exchange resin is completed.

Claims

1. A device for separating spherical particles from broken particles, the device comprising a storage funnel, a direction-changing accelerating tube, an inclined separation plate, a horizontal buffer plate and a collecting tank, wherein: The horizontal buffer plate is horizontally arranged and supported by supporting legs. The horizontal buffer plate is a thin plate in a rectangular shape. Support legs are arranged at the four corners of the horizontal buffer plate. A collecting groove inclined along its length direction is arranged at the front edge of the horizontal buffer plate. The length of the collecting groove is equal to the length of the horizontal buffer plate, and the upper edge of the inner side plate of the collecting groove is smoothly connected to the front edge of the horizontal buffer plate. The left and right end surfaces of the horizontal buffer plate are both provided with a first plastic baffle plate, and the first plastic baffle plate corresponding to the higher end of the collecting groove extends and is connected to the outer side plate of the collecting groove, and the lower end of the collecting groove is an open discharge port; The lower edge of the inclined separation plate is hinged on the rear edge of the horizontal buffer plate through a hinge shaft, the hinge shaft is located at the two end surfaces of the inclined separation plate and is rotatably connected with the corresponding first plastic baffle, the lower edge of the inclined separation plate is an arc shape coaxial with the hinge shaft, the lower edge of the arc shape is in contact with and tangent to the upper surface of the horizontal buffer plate, a bracket is provided below the inclined separation plate, the bracket is fixed to the side of the supporting leg, at least two identical and corresponding parallel electric push rods are hinged on the bracket, the free end of each electric push rod is hinged on the lower surface of the inclined separation plate, second plastic baffles are provided at both ends and the upper edge of the inclined separation plate, and the second plastic baffles at both ends of the inclined separation plate are respectively parallel and closely attached to the inner side surface of the first plastic baffle on the corresponding side; The storage funnel is supported by a horizontal round iron ring, which is fixed to a guide sleeve through a support arm. The guide sleeve is coaxially sleeved on a vertical support guide rod and matched to form a sliding pair. The guide sleeve is fixed to the support guide rod through a locking bolt that is threaded and penetrates its side wall. The lower end of the support guide rod is vertically fixed to a disc-shaped base. The lower end of the storage funnel is provided with a connecting pipe that extends downward and is connected to its interior. The middle part of the connecting pipe is provided with a regulating valve for controlling the opening of its cross-section. The lower end of the connecting pipe is connected to a detachable transparent observation tube. The lower end of the transparent observation tube is connected to an arc-shaped direction-changing acceleration tube. The lower end of the direction-changing acceleration tube extends horizontally above the inclined separation plate and is tangent to the upper surface of the inclined separation plate. The direction-changing acceleration tube is fixed at the corner of the edge of the inclined separation plate. The horizontal buffer plate is a glass plate. The bottom of the collecting tank is made of glass.

2. The device for separating spherical particles from broken particles according to claim 1, characterized in that: The inclined separation plate is an enameled iron plate.

3. The device for separating spherical particles from broken particles according to claim 1, characterized in that: A support column is arranged below the collecting tank.

4. The device for separating spherical particles from broken particles according to claim 1, characterized in that: The transparent observation tube is made of transparent glass.

5. A separation method using the device for separating spherical particles from broken particles according to any one of claims 1 to 4, the method comprising the following steps: ① According to the particle size of the ion exchange resin to be separated, the angle between the inclined separation plate and the horizontal buffer plate is adjusted by the electric push rod, so that the spherical particles in the ion exchange resin that have been dried and can roll freely can roll out of the direction-changing acceleration tube, pass through the inclined separation plate and the horizontal buffer plate, and then roll into the inclined collection tank, while ensuring that the broken particles cannot roll down from the inclined separation plate; ② According to the particle size of the ion exchange resin to be separated, the length of the transparent observation tube is adjusted so that after the spherical particles in the ion exchange resin that have been dried and can roll freely roll out of the direction-changing acceleration tube, the spherical particles in the ion exchange resin roll the farthest distance on the inclined separation plate and do not contact the second plastic baffle; ③ Operate the regulating valve to close the connecting pipe at the lower end of the storage funnel, and place a weighing cup A for collecting spherical particles at the outlet of the collecting tank; ④ Load the ion exchange resin to be separated into the storage funnel, open and control the opening of the regulating valve, and make the opening of the regulating valve in a moderate state by observing the transparent observation tube and the dispersion degree of the resin particles on the inclined separation plate; ⑤ After all the resin particles in the storage funnel are discharged, all the resin particles that have not entered the collecting tank are collected and transferred to the storage funnel for separation again, and the separation is repeated until no spherical particles enter the collecting tank; ⑥ Move the weighing cup A containing the spherical particles away from the discharge port of the collecting tank, and then take a weighing cup B and place it at the discharge port of the collecting tank. Use a scraper to scrape all the resin particles that have not entered the collecting tank into the collecting tank, and then scrape them into weighing cup B. The separation of the spherical particles and the broken particles in the ion exchange resin is completed.

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