Novel circulating magnetic filter for propylene diamine production

Abstract

The utility model discloses a novel circulating magnetic filter for propylene diamine production, which comprises a tank body, a discharge pipe fixedly welded at the lower end of the tank body, a limit block fixedly welded on the inner wall of the discharge pipe, a filter sleeve sleeved inside the discharge pipe, a magnet sleeved inside the filter sleeve, a screw rod fastened and adsorbed at the lower end of the magnet, and a screw rod fixed on the lower end of the screw rod. According to the novel circulating magnetic filter for propylene diamine production, a sealing ring, a screw rod, a magnet and a filter sleeve are driven to be dismounted by rotating a dismounting screw, the filter sleeve and the magnet are conveniently cleaned and maintained, magnetic particle removal and impurity filtration can be performed on propylene diamine flowing through the interior of a discharging pipe through the design of the filter sleeve and the magnet, and the filtering effect is improved; by rotating the tightening screw, the supporting block is driven to press the side face of the tank body, the metering plate is driven to press the sealing pad in the tank body, the metering plate is conveniently and fixedly installed, the height position of propylene diamine in the tank body can be measured in real time through the design of the metering plate, and the injection amount of the propylene diamine is conveniently controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of propylene diamine filtering devices, in particular to a novel circulating magnetic filter for propylene diamine production. Background Art

[0002] Propylene diamine is a low-level aliphatic diamine with relatively active chemical properties. It is widely used in epoxy resin curing agents, pharmaceutical intermediates, lubricant additives, oil passivators and other fields. With the growth of market demand for propylene diamine, improving the quality and production efficiency of propylene diamine is an urgent problem to be solved. However, the equipment using the catalyst hydrogenation process in fine chemical production at this stage does not completely separate the catalyst, cannot effectively recover the catalyst, and cannot achieve the recycling of the catalyst, resulting in high production costs.

[0003] At present, the recycling and recovery of catalysts have been realized, which reduces production costs and ensures the smooth progress of continuous kettle reaction production, making it suitable for wide promotion and application.

[0004] For example, a closed-type recycling device for catalysts used in the production of propylene diamine disclosed in the authorization number CN214915905U includes a hydrogenation reactor, one end of the hydrogenation reactor is connected to a buffer settling tank 1, the buffer settling tank 1 is connected to a circulation pump, the buffer settling tank 1 and the circulation pump are connected through an intermediate tank, a circulating magnetic filter 1 is arranged on one side of the upper end of the hydrogenation reactor, the circulating magnetic filter 1 and the intermediate tank are connected through a buffer settling tank 2 and a circulating magnetic filter 2, a recovery tank is connected to the lower end of one side of the circulating magnetic filter 1, a recoil tank is connected to the upper end of the circulating magnetic filter 1, and a cleaning tank is connected to the end of the recoil tank away from the circulating magnetic filter 1. However, such a closed-type recycling device for catalysts used in the production of propylene diamine is not convenient for disassembling and assembling the filter device for cleaning and maintenance, and is not convenient for real-time measurement of the height position of propylene diamine.

[0005] It can be seen from the solutions disclosed in the above-mentioned existing patent documents that it is inconvenient to disassemble the filtering device for cleaning and maintenance, and it is inconvenient to measure the height position of propylenediamine in real time. Therefore, it is necessary to improve the existing technology. Utility Model Content

[0006] The utility model aims to provide a novel circulating magnetic filter for producing propylene diamine, so as to solve the problems that it is inconvenient to disassemble and assemble the filter device for cleaning and maintenance, and it is inconvenient to measure the height position of propylene diamine in real time.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a new circulating magnetic filter for the production of propylenediamine, comprising a tank body, a discharge pipe is fixedly welded at the lower end of the tank body, a limiting block is fixedly welded to the inner wall of the discharge pipe, a filter sleeve is sleeved inside the discharge pipe, a magnet is sleeved inside the filter sleeve, a screw is fastened and adsorbed on the lower end of the magnet, a sealing ring is sleeved on the outer side of the lower end of the screw, a screw is fixedly connected to the lower end of the screw, a screw is threadedly connected to the inside of the tank body, a support block is sleeved on the outer side of the screw, a metering plate is fixedly connected to one end of the support block, the outer surface of the metering plate is engraved with scale lines, and a sealing gasket is pressed tightly on the inner side of the metering plate.

[0008] Preferably, the interior of the discharge pipe is connected to a screw via a threaded connection, and the lower end of the discharge pipe is pressed against a sealing ring, and the sealing ring, screw, magnet and filter sleeve are removed by rotating the removal screw, so that the filter sleeve and magnet can be cleaned and maintained conveniently.

[0009] Preferably, the lower end of the limit block is in close contact with the filter sleeve, and the lower end of the filter sleeve is in close contact with the screw. The design of the filter sleeve and the magnet can remove magnetic particles and impurities from propylenediamine flowing through the discharge pipe, thereby improving the filtering effect.

[0010] Preferably, a sticky screw is fixed at the lower end of the sealing ring, and the sealing gasket is pressed against the inside of the tank body. By turning the tightening screw, the support block is driven to press the side of the tank body, and the metering plate is driven to press the sealing gasket against the inside of the tank body, thereby facilitating the fixed installation of the metering plate.

[0011] Preferably, the outer side surface of the tank body is pressed against a support block, and the inner sleeve of the tank body is provided with a metering plate, and the design of the metering plate can measure the height position of the propylenediamine inside the tank body in real time so as to control the injection amount of propylenediamine.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The interior of the discharge pipe of the utility model is connected to the screw rod through a thread, and the lower end of the discharge pipe is pressed tightly with a sealing ring. The sealing ring, the screw rod, the magnet and the filter sleeve are removed by rotating the removal screw, so that the filter sleeve and the magnet can be cleaned and maintained conveniently.

[0014] 2. The lower end of the limit block of the utility model is in close contact with the filter sleeve, and the lower end of the filter sleeve is in close contact with the screw. The design of the filter sleeve and the magnet can remove magnetic particles and impurities from the propylenediamine flowing through the discharge pipe, thereby improving the filtering effect.

[0015] 3. The lower end of the sealing ring of the utility model is fixed with an adhesive screw, and the sealing gasket is pressed tightly inside the tank body. By turning the tightening screw, the support block is driven to press the side of the tank body, and the metering plate is driven to press the sealing gasket tightly inside the tank body, which is convenient for fixing and installing the metering plate.

[0016] 4. The outer side of the tank body of the utility model is pressed against the support block, and the inner sleeve metering plate of the tank body is designed to measure the height position of the propylenediamine inside the tank body in real time so as to control the injection amount of propylenediamine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is an enlarged cross-sectional view of the discharge pipe of the utility model;

[0019] Figure 3 This is an enlarged cross-sectional view of the metering plate of the utility model from top view.

[0020] In the figure: 1 tank body, 11 discharge pipe, 12 limit block, 13 filter sleeve, 14 magnet, 15 screw, 16 sealing ring, 17 screw, 2 screw, 21 support block, 22 metering plate, 23 scale line, 24 sealing gasket. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example 1

[0023] See also Figure 1-3 A new type of circulating magnetic filter for producing propylenediamine shown in the figure comprises a tank body 1, a discharge pipe 11 is fixedly welded at the lower end of the tank body 1, a limiting block 12 is fixedly welded to the inner wall of the discharge pipe 11, a filter sleeve 13 is sleeved inside the discharge pipe 11, a magnet 14 is sleeved inside the filter sleeve 13, a screw 15 is fastened and adsorbed on the lower end of the magnet 14, a sealing ring 16 is sleeved on the outer side of the lower end of the screw 15, a screw 17 is fixedly connected to the lower end of the screw 15, a screw 2 is threadedly connected to the inside of the tank body 1, a support block 21 is sleeved on the outer side of the screw 2, a metering plate 22 is fixedly connected to one end of the support block 21, a scale line 23 is engraved on the outer surface of the metering plate 22, and a sealing gasket 24 is pressed tightly on the inner side of the metering plate 22.

[0024] In order to facilitate the cleaning and maintenance of the filter sleeve 13 and the magnet 14, the interior of the discharge pipe 11 is connected to the screw 15 through a thread, and the lower end of the discharge pipe 11 is pressed against the sealing ring 16. The sealing ring 16, the screw 15, the magnet 14 and the filter sleeve 13 are removed by rotating the removal screw 17, which facilitates the cleaning and maintenance of the filter sleeve 13 and the magnet 14. The lower end of the limit block 12 is close to the filter sleeve 13, and the lower end of the filter sleeve 13 is close to the screw 15. The design of the filter sleeve 13 and the magnet 14 can remove magnetic particles and impurities from the propylenediamine flowing through the discharge pipe, thereby improving the filtering effect.

[0025] In this embodiment, the sealing ring 16, the screw 15, the magnet 14 and the filter sleeve 13 are removed by rotating the removal screw 17, so that the filter sleeve 13 and the magnet 14 can be cleaned and maintained conveniently. The design of the filter sleeve 13 and the magnet 14 can remove magnetic particles and impurities from the propylenediamine flowing through the discharge pipe, thereby improving the filtering effect.

[0026] Example 2

[0027] See also Figure 1-3 , this embodiment further explains Example 1. In the figure, a new type of circulating magnetic filter for producing propylenediamine includes a tank body 1, a discharge pipe 11 is fixedly welded at the lower end of the tank body 1, a limiting block 12 is fixedly welded to the inner wall of the discharge pipe 11, a filter sleeve 13 is sleeved inside the discharge pipe 11, a magnet 14 is sleeved inside the filter sleeve 13, a screw 15 is fastened and adsorbed on the lower end of the magnet 14, a sealing ring 16 is sleeved on the outer side of the lower end of the screw 15, a screw 17 is fixedly connected to the lower end of the screw 15, a screw 2 is threadedly connected to the inside of the tank body 1, a support block 21 is sleeved on the outer side of the screw 2, a metering plate 22 is fixedly connected to one end of the support block 21, a scale line 23 is engraved on the outer surface of the metering plate 22, and a sealing gasket 24 is pressed tightly on the inner side of the metering plate 22.

[0028] In order to facilitate the real-time measurement of the height position of propylenediamine, the lower end of the sealing ring 16 is fixed with a sticky screw 17, and the inside of the tank body 1 is pressed tightly with a sealing gasket 24. By rotating the tightening screw 2, the support block 21 is driven to press the side of the tank body 1, and the metering plate 22 is driven to press the sealing gasket 24 inside the tank body 1, so as to facilitate the fixed installation of the metering plate 22. The outer side of the tank body 1 presses the support block 21, and the internal sleeve of the tank body 1 is clamped with the metering plate 22. The design of the metering plate 22 can measure the height position of propylenediamine inside the tank body 1 in real time, so as to control the injection amount of propylenediamine.

[0029] In this embodiment, by rotating the tightening screw 2, the support block 21 is driven to press the side of the tank body 1, and the metering plate 22 is driven to press the sealing gasket 24 inside the tank body 1, so as to facilitate the fixed installation of the metering plate 22. The design of the metering plate 22 can measure the height position of the propylenediamine inside the tank body 1 in real time, so as to control the injection amount of propylenediamine.

[0030] The novel circulating magnetic filter for the production of propylene diamine can drive the sealing ring 16, the screw 15, the magnet 14 and the filter sleeve 13 to be removed by rotating the removal screw 17, so that the filter sleeve 13 and the magnet 14 can be cleaned and maintained conveniently. The design of the filter sleeve 13 and the magnet 14 can remove magnetic particles and impurities from the propylene diamine flowing through the inside of the discharge pipe, thereby improving the filtering effect. By rotating the tightening screw 2, the support block 21 is driven to press the side of the tank body 1, and the metering plate 22 is driven to press the sealing gasket 24 inside the tank body 1, so that the metering plate 22 is conveniently fixed and installed. The design of the metering plate 22 can measure the height position of the propylene diamine inside the tank body 1 in real time, so as to control the injection amount of propylene diamine.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel circulating magnetic filter for producing propylenediamine, comprising a tank body (1), characterized in that: A discharge pipe (11) is fixedly welded to the lower end of the tank body (1), a limit block (12) is fixedly welded to the inner wall of the discharge pipe (11), a filter sleeve (13) is sleeved inside the discharge pipe (11), a magnet (14) is sleeved inside the filter sleeve (13), a screw (15) is fastened and adsorbed on the lower end of the magnet (14), a sealing ring (16) is sleeved on the outer side of the lower end of the screw (15), a screw (17) is fixedly connected to the lower end of the screw (15), a screw (2) is threadedly connected to the inside of the tank body (1), a support block (21) is sleeved on the outer side of the screw (2), one end of the support block (21) is fixedly connected to a metering plate (22), a scale line (23) is engraved on the outer surface of the metering plate (22), and a sealing gasket (24) is pressed tightly on the inner side of the metering plate (22).

2. A novel circulating magnetic filter for producing propylenediamine according to claim 1, characterized in that: The interior of the discharge pipe (11) is connected to a screw rod (15) via a threaded connection, and the lower end of the discharge pipe (11) is pressed against a sealing ring (16).

3. A novel circulating magnetic filter for producing propylenediamine according to claim 1, characterized in that: The lower end of the limiting block (12) is in close contact with the filter sleeve (13), and the lower end of the filter sleeve (13) is in close contact with the screw rod (15).

4. A novel circulating magnetic filter for producing propylenediamine according to claim 1, characterized in that: The lower end of the sealing ring (16) is fixed with an adhesive screw (17), and the interior of the tank body (1) is pressed tightly with a sealing gasket (24).

5. The novel circulating magnetic filter for producing propylenediamine according to claim 1, characterized in that: The outer side surface of the tank body (1) is pressed against a support block (21), and the inner sleeve metering plate (22) of the tank body (1) is clamped.

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