Catalyst storage tank

Abstract

The utility model relates to the technical field of storage tanks, in particular to a catalyst storage tank which comprises a tank body, a containing cavity with an opening in the upper end is formed in the tank body, a heating assembly is arranged outside the tank body, a mixing mechanism is arranged in the tank body, the mixing mechanism comprises a rotatable and liftable stirring assembly, and the stirring assembly is used for stirring a catalyst in the containing cavity. The material pushing assembly can move in a reciprocating mode, the material pushing assembly moves to be used for pushing the catalyst in the containing cavity, and a driving piece used for driving the mixing assembly and the material pushing assembly to work is further arranged at the upper end of the tank body. Through the arrangement of the mixing mechanism, a stirring assembly rotates to stir liquid catalysts, meanwhile, the stirring assembly can ascend and descend during rotation, the liquid catalysts at different heights can make contact with one another, and meanwhile, the liquid catalysts at different positions in a containing cavity can make contact with one another in cooperation with a material pushing assembly; therefore, the temperature difference caused by different distances between the liquid catalyst and the heating coil is reduced.

Description

Technical Field

[0001] This utility model relates to the field of storage tank technology, and more specifically, to a catalyst storage tank. Background Technology

[0002] In chemical reactions, a catalyst is a substance that can alter the rate of a chemical reaction (increasing or decreasing it) without changing the chemical equilibrium, and whose mass and chemical properties remain unchanged before and after the reaction. Catalysts play a crucial role in the chemical industry. In practical use, catalysts are usually stored in tanks. Some liquid catalysts have specific temperature requirements for storage. For example, triethylenediamine, while having a pure melting point of 158-160°C, tends to crystallize in solutions (such as 33% in DPG) below 15°C. Once crystals form, they are difficult to redissolve, potentially leading to uneven distribution of the active components. Therefore, this type of catalyst requires heating during storage.

[0003] For example, patent CN220549508U discloses a constant temperature storage tank for the preparation of ruthenium-zinc catalyst. Although the constant temperature storage tank heats the raw materials inside the main body through a heating wire, the distance between the catalyst and the heating wire at different positions inside the main body is different because the heating wire is fixedly wound around the outside of the main body. This makes it difficult for the heating wire to heat the catalyst at different positions inside the main body evenly, which may result in temperature differences between the catalyst at different positions inside the main body. Therefore, it needs to be improved. Summary of the Invention

[0004] The purpose of this invention is to provide a catalyst storage tank to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A catalyst storage tank includes a tank body with an upper-opening receiving cavity inside the tank body, a heating component outside the tank body, and a mixing mechanism inside the tank body. The mixing mechanism includes a rotatable and liftable stirring component for stirring the catalyst in the receiving cavity, and a reciprocating pushing component for pushing the catalyst in the receiving cavity. The upper end of the tank body is also provided with a drive component for driving the mixing component and the pushing component.

[0007] Preferably, the stirring assembly includes a rotating shaft disposed within the receiving cavity and rotatable, an outer sleeve of the rotating shaft and a stirring cylinder, a guide groove inside the stirring cylinder, a guide key located opposite to the rotating shaft and sliding within the guide groove, and multiple sets of stirring blades on the stirring cylinder, the stirring blades rotating to agitate the catalyst within the receiving cavity.

[0008] Preferably, the driving component includes a driving housing located at the opening of the receiving cavity, a driving cavity inside the driving housing, a motor mounted on the driving housing, an upper end of a rotating shaft extending into the driving cavity, and a motor output shaft fixedly connected to the rotating shaft.

[0009] Preferably, the pusher includes a push plate movably disposed within the receiving cavity, and a strip groove communicating with the receiving cavity is provided in the drive housing, with the upper end of the push plate extending into the drive cavity through the strip groove.

[0010] Preferably, the driving component includes a first shaft that is rotatable within the driving cavity, a second shaft that is rotatable opposite to the driving cavity, a first gear on the first shaft, a second gear on the second shaft, the first gear and the second gear being meshed, a half gear on the second shaft, a movable rack that is meshed opposite to the driving cavity, the half gear and the rack being meshed, and the upper end of the push plate being fixedly connected to the rack.

[0011] Preferably, a third gear is provided on the motor output shaft and a fourth gear is provided on the first shaft. The third gear and the fourth gear are meshed together, and the rotation of the motor output shaft drives the first shaft to rotate accordingly.

[0012] Preferably, the upper end of the stirring drum extends into the drive cavity, and the upper end of the stirring drum is provided with a connecting plate. An extension ring is provided at the edge of the connecting plate, and a notch is provided on the extension ring. A connecting block is provided in the drive cavity, and a protrusion is provided on the connecting block that slides in the extension ring or the notch. The protrusion slides on the extension ring and the notch to drive the stirring drum to move upward. A spring is provided on the connecting plate to push the connecting plate to move downward.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. In this utility model, the mixing mechanism allows the stirring component to agitate the liquid catalyst during rotation. The stirring component can also rise and fall during rotation, allowing the liquid catalyst at different heights to come into contact with each other. In conjunction with the pushing component, the liquid catalyst at different positions in the containment cavity can come into contact with each other, thereby reducing the temperature difference caused by the different distances between the liquid catalyst and the heating coil.

[0015] This invention, through the setting of guide posts and strip grooves, restricts the movement of the push plate, that is, it can only move along the extension direction of the strip grooves and guide posts. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a catalyst storage tank according to the present invention.

[0017] Figure 2 This is a schematic diagram of the structure of the tank and drive housing in this utility model.

[0018] Figure 3 This is a cross-sectional schematic diagram of the tank body in this utility model.

[0019] Figure 4 This is one of the structural schematic diagrams of the drive housing, the first shaft, and the second shaft in this utility model.

[0020] Figure 5 This is the second structural schematic diagram of the drive housing, the first shaft, and the second shaft in this utility model.

[0021] Figure 6 This is one of the structural schematic diagrams of part of the stirring cylinder and connecting plate in this utility model.

[0022] Figure 7 This is a schematic diagram of the structure of some of the rotating shafts and guide keys in this utility model.

[0023] Figure 8 This is the second schematic diagram of the structure of part of the stirring cylinder and connecting plate in this utility model.

[0024] The meanings of the labels in the diagram are as follows:

[0025] 100. Tank body; 101. Feed pipe; 102. Discharge pipe; 103. Support leg; 110. Insulation cover; 111. Heating coil; 112. Water inlet pipe; 120. Drive housing; 121. Motor;

[0026] 300. Push plate; 301. Guide column;

[0027] 400, Motor output shaft; 401, Third gear; 411, First shaft; 412, Fourth gear; 420, Connecting block; 421, Protruding post;

[0028] 500, First gear; 510, Second shaft; 511, Second gear; 512, Half gear; 520, Rack; 530, Spring;

[0029] 600. Mixing drum; 601. Mixing blades; 610. Guide groove; 611. Connecting plate;

[0030] 700. Shaft; 711. Guide key;

[0031] 800, extension ring; 801, notch. Detailed Implementation

[0032] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative of this utility model and are not intended to limit it.

[0033] The following is in conjunction with the appendix Figures 1-8 This embodiment will be described in further detail.

[0034] Please see Figures 1-3 In this embodiment, a catalyst storage tank includes a tank body 100, a receiving cavity with an opening at the top inside the tank body 100, a heating component outside the tank body 100, and a mixing mechanism inside the tank body 100.

[0035] The mixing mechanism includes a rotatable and liftable stirring assembly for agitating the catalyst in the containment chamber, and a reciprocating pushing assembly for pushing the catalyst in the containment chamber. The upper end of the tank 100 is also provided with a drive unit for driving the mixing assembly and the pushing assembly.

[0036] In this embodiment, the heating assembly includes a heating coil 111 fixedly connected to the outside of the tank 100, and an insulation cover 110 covering the heating coil 111 is provided outside the tank 100. The insulation cover 110 can keep the heated tank 100 warm.

[0037] One end of the heating coil 111 is fixedly connected to the water inlet pipe 112, and the other end is fixedly connected to the water outlet pipe (not shown in the figure). One end of the water inlet pipe 112 and the water outlet pipe both extend out of the heat insulation cover 110. The water inlet pipe 112 is connected to the hot water pipe so that hot water flows in the heating coil 111 and the hot water can be discharged from the water outlet pipe, thereby heating the tank 100.

[0038] A feed pipe 101 and a discharge pipe 102 are fixedly connected to one side of the tank body 100 at the upper and lower ends, respectively. Both the feed pipe 101 and the discharge pipe 102 are equipped with openable and closable valves. Support legs 103 are fixedly connected to the bottom of the tank body 100 at the four corners. The support legs 103 are connected to the ground by expansion bolts.

[0039] In the process of storing a catalyst (such as a triethylenediamine solution), the catalyst is first added to the containment cavity through the feed pipe 101. Then, hot water is added to the heating coil 111 through the water inlet pipe 112. The heat from the hot water is conducted into the containment cavity through the heating coil 111 and the tank 100 to heat the catalyst and prevent crystal precipitation due to low temperature during storage. The mixing mechanism is then activated, causing the stirring component to rotate and agitate the catalyst. The stirring component can also rise and fall during rotation, allowing catalysts at different heights to come into contact with each other. In conjunction with the pusher component, catalysts at different positions in the containment cavity can come into contact with each other, thereby reducing the temperature difference caused by the different distances between the catalyst and the heating coil 111, and ensuring that the catalyst is heated uniformly.

[0040] Combination Figures 6-8As shown, in this embodiment, the stirring assembly includes a rotating shaft 700 disposed in the receiving cavity and rotatable. A stirring cylinder 600 is disposed outside the rotating shaft 700. A guide groove 610 is provided inside the stirring cylinder 600. A guide key 711 located in the guide groove 610 is fixedly connected to the outside of the rotating shaft 700. Multiple sets of stirring blades 601 are fixedly connected on the stirring cylinder 600. The stirring blades 601 rotate to stir the catalyst in the receiving cavity.

[0041] In this embodiment, when the rotating shaft 700 rotates, with the cooperation of the guide key 711 and the guide groove 610, the stirring cylinder 600 and the stirring blade 601 can be driven to rotate, thereby stirring the catalyst in the containment cavity.

[0042] Combination Figures 6-8 As shown, in this embodiment, the driving component includes a driving housing 120 located at the opening of the receiving cavity. The driving housing 120 is connected to the tank body 100 by screws. The driving housing 120 has a driving cavity inside. A motor 121 is provided on the driving housing 120. The upper end of the rotating shaft 700 extends into the driving cavity. The motor output shaft 400 of the motor 121 is fixedly connected to the rotating shaft 700.

[0043] In this embodiment, when the motor 121 starts, the rotation of the motor output shaft 400 can drive the rotating shaft 700 to rotate;

[0044] Specifically, the motor 121 is used in conjunction with the reducer, which enables the rotating shaft 700 to rotate relatively slowly, thereby reducing the shear force generated on the catalyst when the stirring blade 601 rotates, which may lead to a decrease in catalyst activity.

[0045] The drive housing 120 is provided with a sealing gasket near the upper opening of the receiving cavity, which can seal the receiving cavity and reduce the possibility of outside air entering the receiving cavity.

[0046] Combination Figures 1-3 As shown, in this embodiment, the pusher includes a push plate 300 movably disposed in the receiving cavity, and a strip groove communicating with the receiving cavity is provided in the drive housing 120. The upper end of the push plate 300 extends into the drive cavity through the strip groove.

[0047] In this embodiment, when the pusher plate 300 moves, it can drive the catalyst in the accommodating cavity to move accordingly, so that the catalysts at different positions can come into contact with each other, reducing the possibility of temperature difference in the catalyst due to different distances from the heating coil 111.

[0048] Combination Figures 1-5As shown, in this embodiment, the driving component includes a first shaft 411 that is rotatable and disposed within the driving cavity. The first shaft 411 is mounted in the driving housing 120 via bearings. A second shaft 510 that is rotatable is disposed opposite to the first shaft 411 within the driving cavity. The second shaft 510 is mounted in the driving housing 120 via bearings and is located on both sides of the first shaft 411. A first gear 500 is fixedly connected to the first shaft 411, and a second gear 511 is fixedly connected to the second shaft 510. The first gear 500 and the second gear 511 are meshed together. A half gear 512 is also fixedly connected to the second shaft 510. A movable rack 520 is disposed opposite to the second shaft 510 within the driving cavity. The half gear 512 is meshed with the rack 520. The upper end of the push plate 300 is fixedly connected to the rack 520.

[0049] In this embodiment, when the first shaft 411 rotates, under the transmission of the first gear 500 and the second gear 511, the second shaft 510 can drive the half gear 512 to rotate. There are two second shafts 510, which are located on both sides of the rack 520 respectively. When the half gear 512 on one side of the rack 520 contacts the rack 520, it can drive the rack 520 to move closer to the center of the drive cavity. When the half gear 512 on the other side of the rack 520 contacts the rack 520, it can drive the rack 520 to move away from the center of the drive cavity. This process is repeated continuously, so that the pusher plate 300 can move back and forth in the receiving cavity, thereby making the catalysts at different positions in the receiving cavity come into contact with each other.

[0050] Specifically, in order to enhance the effect of the pusher plate 300 in promoting catalyst contact, the pusher plate 300 is provided with multiple through holes. When the pusher plate 300 moves, some of the catalyst will pass through the pusher plate 300 through the through holes.

[0051] In order to restrict the movement direction of the push plate 300, the upper end of the push plate 300 extends into the drive cavity through the strip groove, and the drive cavity is provided with a guide post 301 that passes through the push plate 300. Through the setting of the guide post 301 and the strip groove, the movement of the push plate 300 can be restricted, that is, it can only move along the extension direction of the strip groove and the guide post 301.

[0052] It should be noted that even when the pusher plate 300 moves to one end of the strip groove near the center of the drive cavity, the pusher plate 300 will not come into contact with the rotating stirring blade 601, so as to avoid mutual interference between the two.

[0053] Combination Figures 1-4 As shown, in this embodiment, a third gear 401 is fixedly connected to the motor output shaft 400, and a fourth gear 412 is fixedly connected to the first shaft 411. The third gear 401 and the fourth gear 412 are meshed together, and the rotation of the motor output shaft 400 drives the first shaft 411 to rotate accordingly.

[0054] In this embodiment, the motor 121 is fixedly connected to the drive housing 120 by screws, and the motor output shaft 400 extends into the drive cavity and is fixedly connected to the rotating shaft 700. When the motor output shaft 400 rotates, it can drive the third gear 401, the fourth gear 412 and the first shaft 411 to rotate accordingly.

[0055] Combination Figures 4-8 As shown, in this embodiment, the upper end of the stirring cylinder 600 extends into the driving cavity. A connecting plate 611 is fixedly connected to the upper end of the stirring cylinder 600. An extension ring 800 extends downward from the edge of the connecting plate 611. A notch 801 is provided on the extension ring 800. A connecting block 420 is fixedly connected to the driving cavity by bolts. A protrusion 421 is provided on the connecting block 420 and slides on the extension ring 800 or the notch 801. The protrusion 421 slides on the extension ring 800 or the notch 801 to drive the stirring cylinder 600 to move upward. A spring 530 is provided on the connecting plate 611 and is used to push the connecting plate 611 to move downward.

[0056] In this embodiment, one end of the spring 530 abuts against the connecting plate 611, and the other end abuts against the third gear 401. Under the elastic force of the spring 530, the connecting plate 611 will move downward, so that the extension ring 800 or the notch 801 always abuts against the protrusion 421. When the stirring drum 600 rotates and the protrusion 421 contacts the extension ring 800, it will drive the stirring drum 600 and the stirring blade 601 to move upward. At this time, the spring 530 is compressed. When the stirring drum 600 continues to rotate, that is, when the protrusion 421 contacts the notch 801, under the elastic force of the spring 530, the stirring drum 600 and the stirring blade 601 will move downward to agitate the catalyst at different heights.

[0057] In summary, the above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall fall within the scope of the patent of the present utility model.

Claims

1. A catalyst storage tank, comprising a tank body (100), wherein the tank body (100) has a receiving cavity with an opening at the upper end, and a heating assembly is provided outside the tank body (100), characterized in that: The tank (100) is equipped with a mixing mechanism, which includes a rotatable and liftable stirring component for stirring the catalyst in the containment cavity, and a reciprocating pusher component for pushing the catalyst in the containment cavity. The upper end of the tank (100) is also equipped with a drive component for driving the mixing component and the pusher component.

2. A catalyst storage tank according to claim 1, characterized in that: The stirring assembly includes a rotating shaft (700) disposed in the containment cavity and rotatable. The rotating shaft (700) is fitted with a stirring cylinder (600). The stirring cylinder (600) is provided with a guide groove (610). The rotating shaft (700) is provided with a guide key (711) that slides in the guide groove (610). The stirring cylinder (600) is provided with multiple sets of stirring blades (601). The stirring blades (601) rotate to stir the catalyst in the containment cavity.

3. A catalyst storage tank according to claim 2, characterized in that: The driving component includes a driving housing (120) located at the opening of the receiving cavity, a driving cavity is provided inside the driving housing (120), a motor (121) is provided on the driving housing (120), the upper end of the rotating shaft (700) extends into the driving cavity, and the motor output shaft (400) of the motor (121) is fixedly connected to the rotating shaft (700).

4. A catalyst storage tank according to claim 2, characterized in that: The pusher includes a push plate (300) movably disposed in the receiving cavity, and a strip groove communicating with the receiving cavity is provided in the drive housing (120). The upper end of the push plate (300) extends into the drive cavity through the strip groove.

5. A catalyst storage tank according to claim 4, characterized in that: The driving component includes a first shaft (411) that is rotatable and located in the driving cavity, and a second shaft (510) that is rotatable and located opposite each other in the driving cavity. A first gear (500) is provided on the first shaft (411), and a second gear (511) is provided on the second shaft (510). The first gear (500) and the second gear (511) are meshed together. A half gear (512) is also provided on the second shaft (510). A movable rack (520) is provided opposite each other in the driving cavity. The half gear (512) and the rack (520) are meshed together. The upper end of the push plate (300) is fixedly connected to the rack (520).

6. A catalyst storage tank according to claim 5, characterized in that: The motor output shaft (400) is provided with a third gear (401), and the first shaft (411) is provided with a fourth gear (412). The third gear (401) and the fourth gear (412) are meshed together. The rotation of the output shaft of the motor (121) is used to drive the first shaft (411) to rotate accordingly.

7. A catalyst storage tank according to claim 6, characterized in that: The upper end of the stirring drum (600) extends into the drive cavity. The upper end of the stirring drum (600) is provided with a connecting plate (611). An extension ring (800) is provided at the edge of the connecting plate (611). A notch (801) is provided on the extension ring (800). A connecting block (420) is provided in the drive cavity. A protrusion (421) is provided on the connecting block (420) and slides in the extension ring (800) or the notch (801). The protrusion (421) slides on the extension ring (800) and the notch (801) to drive the stirring drum (600) to move upward. A spring (530) is provided on the connecting plate (611) and the spring (530) is used to push the connecting plate (611) to move downward.

8. A catalyst storage tank according to claim 7, characterized in that: The drive cavity is provided with guide posts (301) that pass through the push plate (300).

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