Forming device for sodium molecular sieve production

Abstract

The invention relates to a forming device for sodium molecular sieve production. The device comprises a disc pelletizer, the disc pelletizer comprises a rack, a disc cylinder is rotationally arranged on the rack, and a scraper located in the disc cylinder is arranged on the rack and used for scraping away residual attachments on the bottom wall of the disc cylinder. The rack is provided with a particle taking mechanism which can scrape away attachments remaining on the inner ring wall of the disc cylinder and can take out particles in the disc cylinder in time. And the particle taking mechanism not only can scrape off residual attachments on the inner ring wall of the disc cylinder, but also can take out the granulated and molded molecular sieve particles in time, large particles and particles with required particle sizes are taken out, and residual small particles and raw material powder can be continuously granulated. The problem that granulation is affected by residual substances on the inner ring wall can be solved, meanwhile, formed particles can be taken out in time, and the granulation efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of molecular sieves, and in particular to a forming device for producing sodium molecular sieves. Background Art

[0002] Molecular sieve is a synthetic zeolite with the function of screening molecules. It has many channels with uniform pore sizes and neatly arranged holes in its structure. Molecular sieves with different pore sizes separate molecules of different sizes and shapes. Molecular sieves have high adsorption capacity, strong selectivity and high temperature resistance. They are widely used in organic chemical industry and petrochemical industry. They are also excellent adsorbents for coal gas dehydration and are increasingly valued in waste gas purification.

[0003] Sodium molecular sieve is an alkali metal aluminum silicate molecular sieve with a certain alkalinity. It is mainly used for drying medicine and air compression systems. There are different professional varieties according to different applications. The existing sodium molecular sieve is generally produced by a disc granulator. The disc granulator is a type of granulator. The disc is lined with high-strength fiberglass. It has the advantages of uniform granulation, high granulation rate, stable operation, durable equipment, and long service life. It is an ideal granulation equipment.

[0004] However, in the molecular sieve production process, raw materials are easily attached to the bottom wall and inner ring wall of the disc drum to form residual materials. The existing disc drum is generally provided with a scraper for scraping off the bottom wall, but no structure for scraping off the residual materials on the inner ring wall is found. These residual attachments will occupy the effective granulation area of ​​the disc drum, reduce the contact area between the raw materials and the disc drum, cause the formation of particles to become difficult, and also cause the granulation output to decrease. In addition, the discharging of the disc granulator is generally carried out as a whole after the granulation is completed, but there are large particles, particles of required particle size, small particles and fine raw material powder in these materials. If the granulation time is long, more large particles will be generated, resulting in the reduction of particles of required particle size. If the granulation time is short, more raw materials will remain. Although the raw materials after screening can be recycled, it will cause the granulation molding rate to decrease and the production efficiency is low. Therefore, it is necessary to take out the particles of required particle size from the disc drum in time to realize a molecular sieve molding device that can continuously obtain particles of required particle size. Summary of the invention

[0005] The purpose of the present invention is to provide a forming device for producing sodium molecular sieves to solve the technical problems existing in the prior art that the residual attachments on the inner ring wall of the disc cylinder cannot be scraped off and the particles of the required particle size cannot be continuously obtained.

[0006] To achieve the above-mentioned purpose, a forming device for producing sodium molecular sieve of the present invention adopts the following technical scheme: a forming device for producing sodium molecular sieve, comprising a disc granulator, the disc granulator comprising a frame, a disc cylinder is rotatably arranged on the frame, a scraper located inside the disc cylinder is arranged on the frame, and is used to scrape off the residual attachments on the bottom wall of the disc cylinder; the frame is provided with a particle taking mechanism which can scrape off the residual attachments on the inner ring wall of the disc cylinder and can take out the particles in the disc cylinder in time.

[0007] The particle taking mechanism comprises a rotating plate rotatably arranged on a frame, and a rotating plate driving mechanism is arranged on the frame; a driving cylinder whose telescopic direction is parallel to the axial direction of the disc drum is arranged on the rotating plate, and a box body is arranged at the end of the piston rod of the driving cylinder, and the box body has an opening at one end facing the material conveying direction in the disc drum, and a scraper capable of contacting the inner ring wall of the disc drum when in use is arranged at the open end of the box body, and the bottom plate of the box body is hinged on the box body and densely covered with sieve holes, and a bottom plate driving mechanism for driving the bottom plate to rotate is arranged on the box body; the particle taking mechanism has a scraping position for controlling the box body to rotate to a set angle against the rotation direction of the disc drum, and a particle taking position for controlling the box body to rotate to the lowest position of the disc drum; when the particle taking mechanism is in the scraping position, the scraper contacts the inner ring wall of the disc drum and the bottom plate of the box body is in an open state; when the particle taking mechanism is in the particle taking position, the scraper contacts the inner ring wall of the disc drum and the bottom plate of the box body is in a closed state.

[0008] The scraper comprises an arc-shaped scraping part which is in contact with the inner ring wall of the disc cylinder and an arc-shaped screening part whose curvature is greater than that of the arc-shaped scraping part. A plurality of screening holes are arranged on the arc-shaped screening part.

[0009] The scraper comprises an arc-shaped scraping part which is in contact with the inner ring wall of the disc cylinder and an inclined straight plate-shaped screening part, and a plurality of screening holes are arranged on the straight plate-shaped screening part.

[0010] The box body is provided with an electric control lock capable of locking or unlocking the bottom plate.

[0011] When the grain taking mechanism is located at the grain taking position, there is a gap between the box body and the inner ring wall of the disc cylinder, and a plurality of sieve holes are arranged on a side plate of the box body facing the inner ring wall of the disc cylinder.

[0012] A vertical baffle is arranged on the edge of the scraper near the outlet of the disc.

[0013] The box body and the base plate are connected by a hinge shaft to realize the rotation of the base plate. The base plate driving mechanism includes a crank arm that rotates synchronously with the hinge shaft. An electric push rod is arranged on the box body. One end of the shell of the electric push rod is hinged on the box body, and the end of the movable rod is hinged to the crank arm.

[0014] The frame is provided with a collecting hopper for pouring materials in the disc cylinder and for pouring molecular sieve particles in the material taking mechanism.

[0015] The collecting hopper is a "Y"-shaped structure, and has two side material troughs extending along the outer cylinder wall of the disc cylinder. A centralized discharge port is arranged at the bottom of the collecting hopper.

[0016] The beneficial effects of the present invention are as follows: the particle taking mechanism can not only scrape off the residual attachments on the inner ring wall of the disc cylinder, but also can timely take out the molecular sieve particles after granulation and formation, take out the large particles and particles of required particle size, and the remaining small particles and raw material powder can continue to be granulated. It can not only solve the problem that the residual materials on the inner ring wall affect the granulation, but also can timely take out the formed particles, thereby improving the efficiency of granulation.

[0017] Furthermore, the driving cylinder can drive the box and the scraper to enter and exit the disc, and the rotating plate driving mechanism can drive the box and the scraper to rotate, so as to realize the switching of the particle taking mechanism between the scraping position and the particle taking position. In the scraping position, the scraper contacts the inner ring wall of the disc to scrape off the remaining attachments on it. At this time, the bottom plate of the box is in an open state, and the scraped material and the material rotating with the disc fall directly under the action of gravity to continue granulation. In the particle taking position, the material can enter the box along the scraper, and the larger molecular sieve particles and the molecular sieve particles of the required particle size are left in the box, and the small particles and raw material powder re-enter the disc through the sieve holes to continue granulation. After each particle taking of the box is completed, it can be taken out of the disc by the driving cylinder for subsequent screening and drying, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a first embodiment of a forming device for producing sodium molecular sieves of the present invention, and is also a structural schematic diagram of a particle taking mechanism turning to a particle taking position;

[0019] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0020] Figure 3 yes Figure 1 Structural schematic diagram of the particle removal mechanism turning to the scraping position;

[0021] Figure 4 yes Figure 1 Schematic diagram of the structure of the middle box and scraper;

[0022] Figure 5 yes Figure 4 A schematic diagram of the structure at another angle;

[0023] Figure 6 It is a schematic structural diagram of a box in Embodiment 2 of a forming device for producing sodium molecular sieves of the present invention. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are provided in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0025] It should be noted that, unless otherwise defined, the technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0026] Embodiment 1 of a forming device for producing sodium molecular sieve according to the present invention is as follows: Figure 1-Figure 5 As shown, the disc granulator includes a frame 1, a disc drum 2 is rotatably arranged on the frame 1, and a scraper 3 located in the disc drum is arranged on the frame, and the scraper 3 is used to scrape off the residual attachments on the bottom wall of the disc drum. The disc granulator can adjust its angle and rotation speed. The disc granulator, the scraper 3, and the angle adjustment and speed adjustment of the disc drum are all prior arts, and will not be described in detail in this embodiment.

[0027] The frame 1 is provided with a particle taking mechanism which can scrape off the attachments remaining on the inner ring wall of the disc tube and can take out the particles in the disc tube in time. In the present embodiment, the particle taking mechanism includes a rotating plate 8 rotatably arranged on the frame, and a rotating plate driving mechanism is arranged on the frame. Specifically, the rotating plate 8 is rotatably mounted on the frame through a rotating shaft 9, a first gear is arranged on the rotating shaft 9, a motor is arranged on the frame, and a second gear meshing with the first gear is arranged on the motor shaft of the motor. The rotation of the rotating plate is realized by the motor, the first gear and the second gear. The rotating plate 8 is provided with a driving cylinder 11 whose telescopic direction is parallel to the axial direction of the disc tube, and a box 13 is arranged at the end of the piston rod of the driving cylinder, and the box can be driven in and out of the disc tube by the driving cylinder.

[0028] In this embodiment, the box body 13 has an opening at one end facing the material conveying direction in the disc drum, and the open end of the box body is provided with a scraper 14 that can contact the inner ring wall of the disc drum when in use. The bottom plate 17 of the box body is hinged on the box body and is densely covered with sieve holes (the bottom plate 17 in this embodiment is relative to the opening of the box body), and a bottom plate driving mechanism for driving the bottom plate to rotate is provided on the box body. The box body 13 and the bottom plate 17 are connected by a hinge shaft 23 to realize the rotation of the bottom plate. The bottom plate driving mechanism includes a crank arm 18 that rotates synchronously with the hinge shaft 23. An electric push rod 19 is provided on the box body 13, and one end of the housing of the electric push rod 19 is hinged on the box body 13, and the end of the movable rod is hinged with the crank arm 18. The bottom plate can be opened and closed by driving the crank arm and the hinge shaft to rotate synchronously by the electric push rod. An electric control lock 20 that can lock or unlock the bottom plate is provided on the box body.

[0029] The particle removal mechanism has a control box that rotates against the rotation direction of the disc drum to a scraping position with a set angle, such as Figure 3 The setting angle can be 60-90 degrees. In this embodiment, the setting angle is 90 degrees. In other embodiments, the setting angle can also be selected to be 60 degrees or 80 degrees. The particle taking mechanism also has a particle taking position for controlling the box body to rotate to the lowest position of the disc drum, such as Figure 1 As shown. When the particle taking mechanism is in the scraping position, the scraper 14 contacts the inner ring wall 6 of the disc drum and the bottom plate 17 of the box body is in an open state. When the particle taking mechanism is in the particle taking position, the scraper 14 contacts the inner ring wall 6 of the disc drum and the bottom plate 17 of the box body is in a closed state. In this embodiment, the scraper 14 includes an arc-shaped scraping portion 15 that is in contact with the inner ring wall 6 of the disc drum and an arc-shaped screening portion 16 whose curvature is greater than the arc-shaped scraping portion. The arc-shaped screening portion 16 is provided with a plurality of sieve holes for screening materials and can guide the screened and retained materials into the box body. When the particle taking mechanism is in the particle taking position, there is a gap between the box body and the inner ring wall of the disc drum, and a plurality of sieve holes are provided on a side plate 21 of the box body facing the inner ring wall 6 of the disc drum. Sieve holes are also provided on the side 22 of the box body close to the bottom of the disc drum.

[0030] The frame 1 is provided with a collecting hopper 4 for pouring materials in the disc drum and for pouring molecular sieve particles in the material taking mechanism. The collecting hopper 4 is a "Y"-shaped structure, and the collecting hopper 4 has two side material troughs 5 extending along the outer cylinder wall of the disc drum, and a centralized discharge port 6 is provided at the bottom of the collecting hopper. After all granulation is completed, all materials in the disc drum can be directly poured into the collecting hopper by controlling the angle adjustment of the disc drum. During the granulation process, the molecular sieve particles taken out of the box are poured into the collecting hopper. In addition, the collecting hopper can also prevent the molecular sieve particles that fall from the disc drum from entering to avoid splashing.

[0031] When in use, add the raw materials for sodium molecular sieve granulation into the disc drum, adjust the angle and speed of the disc drum for granulation, and use the scraper to scrape off the attachments on the bottom of the disc drum. During the granulation process, when it is necessary to scrape off the attachments on the inner ring wall of the disc drum, the box body is rotated and moved to the scraping position by rotating the rotating plate and the driving cylinder, and the scraped material passes through the box body and falls back into the analysis sieve. After the granulation setting time (that is, after a part of the molecular sieve particles of the required particle size appear), the box body is rotated and moved to the particle taking position by rotating the rotating plate and the driving cylinder, and the material in the disc drum enters the box body along the scraper, and the large molecular sieve particles and the molecular sieve particles of the required particle size are left in the box body, and the small particles and raw material powder re-enter the disc drum through the sieve hole to continue granulation.

[0032] Embodiment 2 of a forming device for producing sodium molecular sieve according to the present invention is as follows: Figure 6 As shown, the only difference from the first embodiment is that a vertical baffle 24 is provided on the edge of the scraper 14 near the outlet of the disc. This design is to facilitate the material to slide out of the disc when the angle between the disc and the horizontal plane is large while entering the box along the scraper. The vertical baffle can solve the above technical problem well.

[0033] In the above description of this specification, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected" or "connected" should be understood in a broad sense. For example, with regard to the term "connection", it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. Therefore, unless otherwise clearly defined in this specification, those skilled in the art can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0034] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "center", "longitudinal", "lateral", "clockwise" or "counterclockwise", etc., which indicate the orientation or position relationship, are based on the orientation or position relationship shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or position relationship terms cannot be understood or interpreted as limitations on the scheme of the present invention.

[0035] In addition, the terms "first" or "second" used in this specification to refer to numbers or ordinals are only used for descriptive purposes and cannot be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this specification, the meaning of "plurality" is at least two, such as two, three or more, etc., unless otherwise clearly and specifically defined.

[0036] In other embodiments of the present invention, the arc-shaped screening part may be replaced by an inclined straight plate-shaped screening part; the collecting hopper may not be used; the driving cylinder may be replaced by an electric push rod; and the electric push rod may be replaced by the driving cylinder.

Claims

1. A forming device for producing sodium molecular sieve, comprising a disc granulator, the disc granulator comprising a frame, a disc drum rotatably arranged on the frame, a scraper located inside the disc drum arranged on the frame, for scraping off residual attachments on the bottom wall of the disc drum; characterized in that: The frame is provided with a particle taking mechanism which can scrape off the attachments remaining on the inner ring wall of the disc cylinder and can take out the particles in the disc cylinder in time.

2. The forming device for producing sodium molecular sieve according to claim 1, characterized in that: The particle taking mechanism comprises a rotating plate rotatably arranged on a frame, and a rotating plate driving mechanism is arranged on the frame; a driving cylinder whose telescopic direction is parallel to the axial direction of the disc drum is arranged on the rotating plate, and a box body is arranged at the end of the piston rod of the driving cylinder, and the box body has an opening at one end facing the material conveying direction in the disc drum, and a scraper capable of contacting the inner ring wall of the disc drum when in use is arranged at the open end of the box body, and the bottom plate of the box body is hinged on the box body and densely covered with sieve holes, and a bottom plate driving mechanism for driving the bottom plate to rotate is arranged on the box body; the particle taking mechanism has a scraping position for controlling the box body to rotate to a set angle against the rotation direction of the disc drum, and a particle taking position for controlling the box body to rotate to the lowest position of the disc drum; when the particle taking mechanism is in the scraping position, the scraper contacts the inner ring wall of the disc drum and the bottom plate of the box body is in an open state; when the particle taking mechanism is in the particle taking position, the scraper contacts the inner ring wall of the disc drum and the bottom plate of the box body is in a closed state.

3. The forming device for producing sodium molecular sieve according to claim 2, characterized in that: The scraper comprises an arc-shaped scraping part which is in contact with the inner ring wall of the disc cylinder and an arc-shaped screening part whose curvature is greater than that of the arc-shaped scraping part. A plurality of screening holes are arranged on the arc-shaped screening part.

4. The forming device for producing sodium molecular sieve according to claim 2, characterized in that: The scraper comprises an arc-shaped scraping part which is in contact with the inner ring wall of the disc cylinder and an inclined straight plate-shaped screening part, and a plurality of screening holes are arranged on the straight plate-shaped screening part.

5. The forming device for producing sodium molecular sieve according to claim 2, characterized in that: The box body is provided with an electric control lock capable of locking or unlocking the bottom plate.

6. The forming device for producing sodium molecular sieve according to claim 2, characterized in that: When the grain taking mechanism is located at the grain taking position, there is a gap between the box body and the inner ring wall of the disc cylinder, and a plurality of sieve holes are arranged on a side plate of the box body facing the inner ring wall of the disc cylinder.

7. The forming device for producing sodium molecular sieve according to claim 2, characterized in that: A vertical baffle is arranged on the edge of the scraper near the outlet of the disc.

8. The forming device for producing sodium molecular sieve according to claim 2, characterized in that: The box body and the base plate are connected by a hinge shaft to realize the rotation of the base plate. The base plate driving mechanism includes a crank arm that rotates synchronously with the hinge shaft. An electric push rod is arranged on the box body. One end of the shell of the electric push rod is hinged on the box body, and the end of the movable rod is hinged to the crank arm.

9. The forming device for producing sodium molecular sieve according to any one of claims 1 to 8, characterized in that: The frame is provided with a collecting hopper for pouring materials in the disc cylinder and for pouring molecular sieve particles in the material taking mechanism.

10. The forming device for producing sodium molecular sieve according to claim 9, characterized in that: The collecting hopper is a "Y"-shaped structure, and has two side material troughs extending along the outer cylinder wall of the disc cylinder. A centralized discharge port is arranged at the bottom of the collecting hopper.

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