Dry powder catalyst charging tank

Abstract

The utility model relates to the technical field of dry powder catalyst, and disclose a kind of dry powder catalyst feeding tank, including pretreatment tank, the bottom end fixed mounting of pretreatment tank has mixing tank, and the bottom end fixed mounting of mixing tank has feeding tank, the outer wall of mixing tank is sent out and has conveying pipe, the top end of pretreatment tank is embedded with discharging shell, and the side of discharging shell is provided with filter mechanism;The filter mechanism includes servo motor, and the servo motor is embedded in the outer wall side of discharging shell.The utility model is in cooperation with servo motor and driving rod, improves power and lets filter cartridge be able to rotate, filters material while making centrifugal motion, collides to avoid the situation that material is baled, influences the mixing of later period and white oil, and cooperates connecting rod, stirring rod, link rod and scraper, can be fully stirred and mixed to white oil and material to keep uniformity, and cooperates scraper to avoid the situation that material adsorption is difficult to discharge and causes waste.

Description

Technical Field

[0001] This utility model relates to the field of dry powder catalyst technology, specifically a dry powder catalyst feeding tank. Background Technology

[0002] In modern polyethylene production, gas-phase processes (such as Unipol and Innovene processes) account for a significant proportion. These processes employ fluidized bed reactors, requiring the catalyst to be uniformly dispersed in the gaseous monomer (ethylene) in a dry powder state. Dry powder catalysts exhibit good flowability and dispersibility, enabling the formation of a stable fluidized bed under the action of airflow, ensuring uniform reaction.

[0003] Existing patent (publication number: CN214514447U) discloses a main catalyst feeding system. During use, white oil is added through an oil phase feeding port in the main catalyst storage tank, improving catalyst feeding stability and preventing the overheating and clumping of dry powder catalysts. This facilitates long-term operation of the production process, reduces catalyst consumption, and lowers product costs. Furthermore, it avoids contact between installation personnel and corrosive catalysts, reducing the labor intensity of the installation process.

[0004] To address the aforementioned issues, while existing patents have proposed solutions that can prevent overheating and clumping through the coordination of components such as the main catalyst storage tank, in actual use, the dry powder catalyst may adhere and clump due to molecular interactions during transportation or storage. This may prevent it from mixing with white oil, thus affecting the accuracy of subsequent feeding. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] Given that the existing technology has the problem that dry powder catalysts may stick together and clump due to molecular interactions during transportation or storage, they may not be able to mix with white oil, thus affecting the accuracy of subsequent feeding.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A dry powder catalyst feeding tank includes a pretreatment tank, a mixing tank fixedly installed at the bottom of the pretreatment tank, and a feeding tank fixedly installed at the bottom of the mixing tank. A conveying pipe extends through the outer wall of the mixing tank, and a discharge shell is embedded at the top of the pretreatment tank. A filter mechanism is provided on one side of the discharge shell.

[0009] The filtration mechanism includes a servo motor, which is embedded in one side of the outer wall of the feed shell. A drive rod is fixedly installed at the power output end of the servo motor. A drive gear is fixedly installed at one end of the drive rod, and a driven gear is rotatably connected to the outer wall of the drive gear. A drive tube extends through the inside of the driven gear, and a filter cylinder is fixedly installed at the bottom end of the drive tube.

[0010] As a further improvement of this utility model: a connecting rod is fixedly installed at the bottom end of the filter cylinder, and a stirring rod is fixedly installed on the outer wall of the connecting rod.

[0011] As a further improvement of this utility model: a connecting rod is fixedly installed on one side of the stirring rod on the outer wall of the connecting rod, and a scraper is fixedly installed on one end of the connecting rod.

[0012] As a further improvement of this utility model: the pretreatment tank is connected to the mixing tank, and the mixing tank is connected to the feeding tank.

[0013] As a further embodiment of this utility model: the connecting rod forms a rotating structure with the mixing tank through the drive tube and the filter cylinder, and the drive tube forms a rotating structure with the pretreatment tank.

[0014] As a further improvement of this utility model: a sealing plate is movably connected to the top of the feed shell, and a mixing mechanism is provided on one side of the sealing plate.

[0015] As a further embodiment of this utility model: the mixing mechanism includes a vent pipe, which is inserted into one side of the sealing plate at the top of the feed shell, and a locking ring is fixedly installed at one end of the drive pipe that is inserted into the vent pipe, and an air outlet is provided on the outer wall of the vent pipe.

[0016] As a further improvement of this utility model: the outer wall of the pretreatment tank is fixedly installed with an installation shell, and the interior of the installation shell is fitted with a high-efficiency filter.

[0017] As a further improvement of this utility model: a door panel is movably connected to one side of the outer wall of the mounting shell, and a gas pressure relief valve is embedded in the front end of the mounting shell.

[0018] As a further improvement of this utility model: the mounting shell is connected to the pretreatment tank, and the mounting shell is detachably connected to the door panel by bolts.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. This utility model improves the power of the filter cylinder by cooperating with the servo motor and drive rod, so that the filter cylinder can rotate. While filtering the material, it also makes centrifugal motion and collision between the materials to avoid the clumping of materials, which would affect the later mixing with white oil. In addition, with the help of the connecting rod, stirring rod, connecting rod and scraper, the white oil and materials can be fully stirred and mixed to maintain uniformity. The scraper also prevents the material from being adsorbed and difficult to discharge, thus avoiding waste.

[0021] 2. This utility model, through the vent pipe, locking ring, and vent hole, allows the drive tube to rotate while helium gas is ejected to disperse the material, further improving the uniformity of the material and preventing clumping. It is also equipped with a high-efficiency filter and a gas pressure relief valve to allow gas to escape and prevent material from escaping, maintaining the stability of the internal gas pressure of the device and avoiding affecting the operation of the entire device. Attached Figure Description

[0022] Figure 1 A schematic diagram of the overall structure of a dry powder catalyst feeding tank;

[0023] Figure 2 A schematic diagram of the drive rod structure of a dry powder catalyst feeding tank;

[0024] Figure 3 A schematic diagram of the filter cartridge structure of a dry powder catalyst feeding tank;

[0025] Figure 4 A schematic diagram of the connecting rod structure of a dry powder catalyst feeding tank;

[0026] Figure 5 A schematic diagram of a high-efficiency filter structure for a dry powder catalyst feeding tank;

[0027] In the diagram: 1. Pretreatment tank; 2. Mixing tank; 3. Feeding tank; 4. Conveying pipe; 5. Discharge shell; 6. Filtering mechanism; 601. Servo motor; 602. Drive rod; 603. Drive gear; 604. Driven gear; 605. Drive pipe; 606. Filter cylinder; 607. Connecting rod; 608. Stirring rod; 609. Connecting rod; 610. Scraper; 7. Sealing plate; 8. Mixing mechanism; 801. Vent pipe; 802. Engaging ring; 803. Vent hole; 804. Mounting shell; 805. High-efficiency filter; 806. Door panel; 807. Gas pressure relief valve. Detailed Implementation

[0028] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0031] Example 1:

[0032] Please see Figures 1-4 This is the first embodiment of the present utility model.

[0033] This embodiment provides a dry powder catalyst feeding tank, including a pretreatment tank 1, a mixing tank 2 fixedly installed at the bottom of the pretreatment tank 1, a feeding tank 3 fixedly installed at the bottom of the mixing tank 2, a conveying pipe 4 extending through the outer wall of the mixing tank 2, a discharge shell 5 embedded at the top of the pretreatment tank 1, and a filter mechanism 6 provided on one side of the discharge shell 5.

[0034] The filtration mechanism 6 includes a servo motor 601, which is embedded in one side of the outer wall of the feed housing 5. A drive rod 602 is fixedly installed at the power output end of the servo motor 601. A drive gear 603 is fixedly installed at one end of the drive rod 602. A driven gear 604 is rotatably connected to the outer wall of the drive gear 603. A drive tube 605 extends through the inside of the driven gear 604. A filter cylinder 606 is fixedly installed at the bottom end of the drive tube 605.

[0035] Specifically, a connecting rod 607 is fixedly installed at the bottom of the filter cylinder 606, and a stirring rod 608 is fixedly installed on the outer wall of the connecting rod 607.

[0036] Furthermore, the filter cartridge 606 can filter agglomerated materials, preventing them from entering the mixing tank 2 and affecting the uniformity of mixing with white oil. In conjunction with the connecting rod 607 and the stirring rod 608, the materials and white oil can be mixed and stirred, further improving the overall uniformity.

[0037] Specifically, a connecting rod 609 is fixedly installed on one side of the stirring rod 608 on the outer wall of the connecting rod 607, and a scraper 610 is fixedly installed on one end of the connecting rod 609.

[0038] Furthermore, during the rotation of the connecting rod 607, it can drive the connecting rod 609 to rotate as well, thereby causing the scraper 610 to rotate against the inner wall of the mixing tank 2, thus scraping off the adsorbed material and preventing it from being difficult to fall off and causing waste, or affecting subsequent cleaning and maintenance.

[0039] Specifically, the pretreatment tank 1 is connected to the mixing tank 2, and the mixing tank 2 is connected to the feeding tank 3.

[0040] Furthermore, the material first enters the pretreatment tank 1 through the feed shell 5, is initially filtered by the filter cartridge 606, then enters the mixing tank 2 and is fully mixed with white oil, and finally enters the feeding tank 3 for subsequent feeding operations.

[0041] Specifically, the connecting rod 609 forms a rotating structure with the mixing tank 2 through the drive tube 605 and the filter cylinder 606, and the drive tube 605 forms a rotating structure with the pretreatment tank 1.

[0042] Furthermore, the rotating filter cartridge 606 can drive the material to rotate and perform centrifugal motion, allowing the material to collide with each other, thus dispersing agglomerated material. This rotary filtration also improves filtration efficiency.

[0043] In use, the material is first introduced into the filter cylinder 606 of the pretreatment tank 1 through the feeding shell 5. Then, the servo motor 601 is started to make the drive rod 602 rotate, and the drive gear 603 and the driven gear 604 mesh to drive the filter cylinder 606 to rotate. This causes the material to collide with each other due to centrifugal motion and be filtered out and enter the mixing tank 2. White oil is introduced through the conveying pipe 4 and the external pump. Driven by the filter cylinder 606, the connecting rod 607 can drive the stirring rod 608 to rotate, which further improves the uniformity of the material and white oil. At the same time, the connecting rod 609 drives the scraper 610 to fit against the rotating mixing tank 2 to avoid adsorption and make it difficult to discharge the material into the feeding tank 3.

[0044] In summary, the rotating filter cylinder 606 drives the material to rotate, causing the material to undergo centrifugal motion and collide with each other, thus breaking up any clumps of material. The material then detaches from the gaps in the filter cylinder 606 and falls into the mixing tank 2 to mix with the white oil. At the same time, the connecting rod 607 and the stirring rod 608 can improve the uniformity of the white oil and the material. Finally, the connecting rod 609, driven by the connecting rod 607, causes the scraper 610 to rotate in contact with the mixing tank 2, thereby avoiding the situation where the material is difficult to detach due to adsorption, thus avoiding waste or difficulty in cleaning later.

[0045] Example 2:

[0046] Please see Figure 1 , Figure 2 , Figure 3 and Figure 5This is the second embodiment of the present utility model.

[0047] Specifically, a sealing plate 7 is movably connected to the top of the discharge shell 5, and a mixing mechanism 8 is provided on one side of the sealing plate 7.

[0048] Furthermore, the sealing plate 7 and hinge facilitate the opening and closing of the feed shell 5, providing a sealing effect during mixing and preventing any disruption.

[0049] Specifically, the mixing mechanism 8 includes a vent pipe 801, which is inserted into one side of the sealing plate 7 at the top of the feed housing 5. A locking ring 802 is fixedly installed at one end of the drive pipe 605 that is inserted into the vent pipe 801. An air outlet 803 is provided on the outer wall of the vent pipe 801.

[0050] Furthermore, helium gas is introduced into the vent pipe 801 through an external gas supply device and can be ejected through the vent hole 803 of the drive pipe 605 to disperse the material and further disperse the agglomerated material. In conjunction with the locking ring 802, the drive pipe 605 can be rotated when the vent pipe 801 is connected to the drive pipe 605.

[0051] Specifically, a mounting shell 804 is fixedly installed on the outer wall of the pretreatment tank 1, and a high-efficiency filter 805 is embedded inside the mounting shell 804.

[0052] Furthermore, the high-efficiency filter 805 can achieve a filtration effect, preventing excessive internal air pressure during gas discharge, and at the same time filtering the material to prevent it from overflowing due to air pressure.

[0053] Specifically, a door panel 806 is movably connected to one side of the outer wall of the mounting shell 804, and a gas pressure relief valve 807 is embedded in the front end of the mounting shell 804.

[0054] Furthermore, the gas pressure relief valve 807 can improve the control of internal gas pressure, preventing excessive internal gas pressure from affecting the normal operation of the entire device.

[0055] Specifically, the mounting shell 804 is connected to the pretreatment tank 1, and the mounting shell 804 is detachably connected to the door panel 806 by bolts.

[0056] Furthermore, the door panel 806 and the mounting shell 804 are similar in structure to those of a washing machine or refrigerator door, forming a sealing effect and being easily disassembled and assembled with bolts, allowing for the replacement of the internal high-efficiency filter 805.

[0057] During use, when filtration is performed, helium gas is introduced through the external equipment pump via the vent pipe 801 and ejected through the vent hole 803 of the drive pipe 605, which can further disperse the material. The locking ring 802 allows the vent pipe 801 and the drive pipe 605 to communicate and rotate. The high-efficiency filter 805 and the gas pressure relief valve 807 installed in the mounting housing 804 can filter the gas and discharge it to avoid excessive internal pressure. At the same time, the filtered material is prevented from being discharged with the gas pressure. The high-efficiency filter 805 can be easily replaced by opening and closing the door panel 806 and disassembling it.

[0058] In summary, by engaging the locking ring 802 to rotate the vent pipe 801 and the drive pipe 605, helium gas can be introduced and ejected through the vent hole 803 while maintaining the rotation of the filter cartridge 606. This disperses the material, further improving the dispersion effect and preventing the waste caused by clumped materials that are difficult to disperse and utilize. At the same time, in conjunction with the high-efficiency filter 805 and the gas pressure relief valve 807, the incoming helium gas can be discharged while also filtering to prevent materials from being discharged with it, thus preventing excessive internal pressure from affecting the use of the entire device.

[0059] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0060] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0061] It should be understood that numerous specific implementation decisions can be made during the development of any actual implementation method, and in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0062] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A dry powder catalyst feeding tank, comprising: A pretreatment tank (1) is characterized in that: a mixing tank (2) is fixedly installed at the bottom end of the pretreatment tank (1), and a feeding tank (3) is fixedly installed at the bottom end of the mixing tank (2); a conveying pipe (4) extends through the outer wall of the mixing tank (2); a discharge shell (5) is embedded at the top end of the pretreatment tank (1); and a filtering mechanism (6) is provided on one side of the discharge shell (5). The filtration mechanism (6) includes a servo motor (601), which is embedded in one side of the outer wall of the feed shell (5). A drive rod (602) is fixedly installed at the power output end of the servo motor (601). A drive gear (603) is fixedly installed at one end of the drive rod (602), and a driven gear (604) is rotatably connected to the outer wall of the drive gear (603). A drive tube (605) extends through the inside of the driven gear (604), and a filter cylinder (606) is fixedly installed at the bottom end of the drive tube (605).

2. A dry powder catalyst addition tank according to claim 1, characterized in that: A connecting rod (607) is fixedly installed at the bottom end of the filter cylinder (606), and a stirring rod (608) is fixedly installed on the outer wall of the connecting rod (607).

3. A dry powder catalyst addition tank according to claim 2, characterised in that: A connecting rod (609) is fixedly installed on one side of the stirring rod (608) on the outer wall of the connecting rod (607), and a scraper (610) is fixedly installed at one end of the connecting rod (609).

4. A dry powder catalyst addition tank according to claim 1, characterized in that: The pretreatment tank (1) is connected to the mixing tank (2), and the mixing tank (2) is connected to the feeding tank (3).

5. A dry powder catalyst charging tank according to claim 3, characterized in that: The connecting rod (609) forms a rotating structure with the mixing tank (2) through the drive tube (605) and the filter cylinder (606), and the drive tube (605) forms a rotating structure with the pretreatment tank (1).

6. A dry powder catalyst charging tank according to claim 1, characterized in that: The top of the feed shell (5) is movably connected to a sealing plate (7), and a mixing mechanism (8) is provided on one side of the sealing plate (7).

7. A dry powder catalyst doser according to claim 6, characterised in that: The mixing mechanism (8) includes a vent pipe (801), which is inserted into one side of the sealing plate (7) at the top of the feed shell (5). A locking ring (802) is fixedly installed at one end of the drive pipe (605) that is inserted into the vent pipe (801), and an air outlet (803) is provided on the outer wall of the vent pipe (801).

8. A dry powder catalyst charging tank according to claim 1, characterized in that: The pretreatment tank (1) is fixedly installed with an installation shell (804) on its outer wall, and a high-efficiency filter (805) is embedded inside the installation shell (804).

9. A dry powder catalyst feeding tank according to claim 8, characterized in that: A door panel (806) is movably connected to one side of the outer wall of the mounting housing (804), and a gas pressure relief valve (807) is embedded in the front end of the mounting housing (804).

10. A dry powder catalyst charging tank according to claim 8, characterized in that: The mounting shell (804) is connected to the pretreatment tank (1), and the mounting shell (804) is detachably connected to the door panel (806) by bolts.

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