Plug-in filter rod device for kettle and catalyst production device

Abstract

The present application relates to the field of catalyst production, in particular to a plug-in filter rod device for a kettle, and further relates to a catalyst production device. The plug-in filter rod device for a kettle comprises a shell (40), a first motor (1) and a filter rod (50) coaxially arranged inside the shell (40), the filter rod (50) being drivingly connected to the first motor (1) to be axially movable relative to the shell (40) under the driving of the first motor (1). In the present application, the first motor is arranged to enable the filter rod to axially move relative to the shell, thereby solving the problem of difficult manual insertion and extraction due to material adhesion during catalyst production, reducing the labor intensity, improving the labor efficiency and improving the working conditions on site.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of catalyst production, in particular to a plug-in filter rod device for a reactor, and on this basis, further relates to a catalyst production device. BACKGROUND

[0002] At present, in the production process of polyolefin catalyst, the upper clear liquid needs to be discharged layer by layer according to the stratification of the material in the catalyst synthesis reactor. The commonly used separation methods are sedimentation separation method and filtration separation method. In practical application, for the case that the catalyst particles are large and the solvent is easy to settle, the method of first settling and then decanting is generally adopted to quickly realize solid-liquid separation. This method is efficient and simple to operate, and has been widely used. For the case that the catalyst particles are small and the settling is slow, only the filtration method can be used to realize solid-liquid separation.

[0003] In addition, the equipment used in catalyst production is a pressure vessel reactor. During the reaction process, the stratification is inconsistent, and the filtrate at different depths in the reactor needs to be extracted layer by layer. Due to the high sealing performance requirement of the reactor, multiple pipe openings cannot be opened at different heights of the reactor. At present, the commonly used method is to open a pipe opening at the top of the reactor, and a plug-in filter rod device is inserted into the pipe opening. The plug-in filter rod device includes a filter rod and a sealing structure. Part of the filter rod is arranged in the reactor, the sealing structure is connected with the filter rod, and the sealing structure plays a role of radial sealing of the filter rod during the up-down movement of the filter rod. However, during the use process, the filter rod needs to be manually inserted and pulled out. Due to the adhesion of the material, the insertion and pulling out are difficult, the frequency is high, the labor intensity is large, and in addition, the pressing force between the sealing structure and the filter rod cannot be adjusted. After the plug-in filter rod device works for a long time, the sealing will fail, thereby causing the leakage of the equipment. Some toxic and harmful gases will inevitably overflow from the gap between the filter rod and the sealing structure, which seriously affects the working environment of the workers.

[0004] Therefore, it is necessary to provide a plug-in filter rod device for a reactor to overcome or alleviate the above defects. SUMMARY

[0005] The purpose of the present application is to overcome the problems of material adhesion and manual insertion and pulling out difficulty in the prior art, and to provide a plug-in filter rod device for a reactor, which has the advantages of automatic insertion and pulling out.

[0006] In order to achieve the above purpose, one aspect of the present application provides a plug-in filter rod device for a reactor, which comprises a housing, a first motor and a filter rod coaxially arranged in the housing. The filter rod is drivingly connected to the first motor, so as to be axially movable relative to the housing under the driving of the first motor.

[0007] Optionally, the plug-in filter rod device for reactor comprises a second motor, a screw rod in transmission connection with the second motor and sleeved outside the filter rod, and a packing box coaxially sleeved outside the filter rod, wherein a packing is arranged in the packing box, and the screw rod is capable of axially pressing the packing under the drive of the second motor so as to make the packing fit the outer circumferential surface of the filter rod.

[0008] Optionally, a scraper is further arranged below the packing in the packing box, and a convex structure for removing the liquid remaining on the outer circumferential surface of the filter rod is arranged on the surface of the scraper in contact with the filter rod.

[0009] Optionally, a torque sensor is arranged between the second motor and the screw rod.

[0010] Optionally, the output torque of the second motor is preferably 40 N·m-60 N·m.

[0011] Optionally, a butt flange for discharging the liquid inside the filter rod is arranged at the top of the filter rod and communicates with the inside of the filter rod.

[0012] Optionally, a filter head is arranged at the bottom of the filter rod, and the filter head is connected with the filter rod through threads and sealed through an O-ring.

[0013] Optionally, an opening for observing the filter rod is arranged on the shell.

[0014] Optionally, the filter rod comprises an upper filter rod and a lower filter rod, and the upper filter rod is connected with the lower filter rod through a flange and sealed through an O-ring.

[0015] Another aspect of the present application provides a catalyst production device, which comprises a reaction kettle, a hose and the above-mentioned plug-in filter rod device for reactor, one end of the plug-in filter rod device for reactor extending into the reaction kettle and the other end connected with the hose.

[0016] In the present application, the first motor is arranged to enable the filter rod to axially move relative to the shell, thereby solving the problem of difficult manual plug-in due to material adhesion in the catalyst production process, reducing the labor intensity, improving the labor efficiency and improving the working conditions on site. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a perspective view of the plug-in filter rod device for reactor in the present application;

[0018] Figure 2 is another perspective view of the plug-in filter rod device for reactor in the present application;

[0019] Figure 3 is Figure 2A-A is a cross-sectional view of the middle;

[0020] Figure 4 is another angle structure schematic diagram of the plug-in filter rod device for kettle in the application;

[0021] Figure 5 is Figure 3 is an enlarged schematic diagram of I;

[0022] Figure 6 is Figure 4 is an enlarged schematic diagram of II.

[0023] Explanation of reference signs

[0024] 1-first motor; 2-coupling; 3-upper elevator; 7-lower elevator; 8-packing box; 9-packing pressing pad; 10-packing; 11-scraper; 12-reaction kettle connecting port; 14-concave coupling; 15-convex coupling; 16-second motor; 17-pad plate; 18-fixing plate; 19-first motor fixing plate; 22-lower connecting flange; 23-torque sensor; 24-butting flange; 25-filtration filter head; 26-second motor fixing plate; 40-housing; 41-upper housing; 42-lower housing; 50-filter rod; 51-upper filter rod; 52-lower filter rod; 61-screw rod. DETAILED DESCRIPTION

[0025] The specific embodiments of the application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the application, and are not intended to limit the application.

[0026] In the application, the orientation words such as "upper", "lower", "left", "right" used without the contrary description generally refer to the orientation shown in the accompanying drawings. "Inner" and "outer" refer to the inner and outer relative to the outline of each component itself.

[0027] As Figure 3 shown, the application provides a plug-in filter rod device for kettle, which comprises a housing 40, a first motor 1 and a filter rod 50 coaxially arranged inside the housing 40, the filter rod 50 being drivingly connected to the first motor 1 so as to be axially movable relative to the housing 40 under the driving of the first motor 1.

[0028] In the application, the first motor 1 is arranged to enable the filter rod 50 to move axially relative to the housing 40, thereby solving the problem of difficulty in manually plugging and unplugging due to material sticking in the catalyst production process, reducing the labor intensity, improving the labor efficiency and improving the on-site working conditions.

[0029] Specifically, the output shaft of the first motor 1 is connected with one end of the shaft coupling 2, the other end of the shaft coupling 2 is connected with the upper lifting machine 3, the upper lifting machine 3 is connected with the outer side of the filter rod 50 through internal threads or helical teeth, and it can be understood that the outer side of the filter rod 50 is the threads or helical teeth matched with the upper lifting machine 3. In an embodiment of the present application, the upper lifting machine 3 and the filter rod 50 form a complete screw rod lifting machine, and the screw rod lifting machine can be selected according to the actual load, stroke, input rotation speed and lifting speed. In addition, the specific model of the screw rod lifting machine can also be selected according to the structure form, assembly form, transmission ratio and type of screw rod (trapezoidal screw rod, ball screw rod). In a preferred embodiment of the present application, the stroke of the screw rod lifting machine is 1.8 m.

[0030] It can be understood that, in order to improve the hardness, surface roughness and corrosion resistance of the filter rod 50, the material of the filter rod 50 is preferably 316 stainless steel, and the surface is plated with chromium. In addition, in order to facilitate the assembly and manufacturing of the filter rod 50, the filter rod 50 includes an upper filter rod 51 and a lower filter rod 52, the upper filter rod 51 and the lower filter rod 52 are connected through flanges and sealed by O-rings. In a preferred embodiment of the present application, in order to reduce the radial runout of the filter rod 50 and increase the flow of the filtrate inside the filter rod 50, the outer diameter of the upper filter rod 51 is greater than the outer diameter of the lower filter rod 52, and the inner diameter of the upper filter rod 51 is greater than the inner diameter of the lower filter rod 52. Similarly, as shown in Figure 2 In order to facilitate the maintenance of the plug-in filter rod device for the kettle, as well as the installation and manufacturing of the shell 40, the shell 40 includes an upper shell 41 and a lower shell 42, the outer diameter of the lower shell 42 is greater than the outer diameter of the upper shell 41, the inner diameter of the lower shell 42 is greater than the inner diameter of the upper shell 41, the upper shell 41 and the lower shell 42 are connected through flange faces and bolted. In an embodiment of the present application, the outer side of the shaft coupling 2 is provided with a bending piece to protect the shaft coupling 2 from being bumped, and the bending piece is bolted to the first motor fixing plate 19.

[0031] In addition, the upper shell 41 is bolted to the bottom of the upper lifting machine 3, the first motor 1 is bolted to one end of the first motor fixing plate 19, and the other end of the first motor fixing plate 19 is bolted to the upper lifting machine 3 through the upper shell 41. A reinforcing plate is welded on the first motor fixing plate 19, a through hole is formed in the reinforcing plate, a connecting plate is welded above the upper shell 41, and the reinforcing plate is bolted to the connecting plate.

[0032] As shown in Figures 5 to 6As shown, the plug-in filter rod device for the kettle further comprises a second motor 16, a screw rod 61 which is drivingly connected to the second motor 16 and sleeved outside the filter rod 50, and a packing box 8 which is coaxially sleeved outside the filter rod 50, and the packing box 8 is provided with a packing 10, and the screw rod 61 can axially press the packing 10 under the driving of the second motor 16 so as to make the packing 10 fit the outer circumferential surface of the filter rod 50. In this way, the sealing effect of the plug-in filter rod device for the kettle is improved, and the probability of the toxic and harmful gas overflowing from the gap between the filter rod 50 and the packing 10 due to the sealing failure of the device after long-time work is reduced, and the working environment of the workers is further improved.

[0033] Specifically, referring to Figures 5 to 6 , the second motor 16 is connected to the left convex coupling 15 through the left concave coupling 14, the convex coupling 15 is connected to the torque sensor 23, the torque sensor 23 is connected to the right concave coupling 14 through the right convex coupling 15, the concave coupling 14 is drivingly connected to the lower elevator 7, and the lower elevator 7 is connected to the outside of the screw rod 61 through the internal thread or helical tooth, and it can be understood that the outside of the screw rod 61 is the thread or helical tooth matched with the lower elevator 7. In an embodiment of the present application, the lower elevator 7 and the screw rod 61 form a complete screw rod elevator, and the screw rod elevator can be selected according to the actual load, stroke, input rotation speed and lifting speed, and in addition, the specific model of the screw rod elevator can be selected according to the structure form, assembly form, transmission ratio and type of the screw rod (trapezoidal screw rod, ball screw rod). In addition, the top of the torque sensor 23 is provided with a backing plate 17 for fixing the torque sensor 23, as Figure 4 shown, the backing plate 17 is arranged outside the torque sensor 23 and has a circular arc portion for protecting the torque sensor 23 from being bumped.

[0034] Further, as Figure 5 shown, the packing press pad 9 is arranged between the screw rod 61 and the packing 10, the packing press pad 9 is made of metal, and the screw rod 61 presses the packing 10 in the packing box 8 through the packing press pad 9 so as to make the packing 10 fit the outer circumferential surface of the filter rod 50.

[0035] In a preferred embodiment of the present application, the output torque of the second motor 16 is 0N·m-200N·m, preferably 40N·m-60N·m, and in actual use, the output torque can be adjusted according to the wear degree of the packing 10. The material of the packing 10 can be selected as a fiber packing, a graphite packing, a carbon fiber packing or a polytetrafluoroethylene packing according to actual needs.

[0036] In addition, as Figure 1 , Figure 5 and Figure 6As shown, the lower housing 42 is bolted to the lower elevator 7, and the second motor 16 is bolted to one end of the fixed plate 18. The other end of the fixed plate 18 is bolted to the lower elevator 7 via the lower housing 42. Similarly, the pad 17 is bolted to the fixed plate 18. In addition, to increase the stability of the fixed plate 18, a first connecting plate is welded to the fixed plate 18, and a second connecting plate is welded to the lower housing 42. The second connecting plate is connected to the first connecting plate via the second motor fixing plate 26.

[0037] like Figure 5 As shown, in one embodiment of the present invention, the packing box 8 is provided with a countersunk hole, through which bolts are connected to the lower connecting flange 22. The lower connecting flange 22 is then connected to the lower lifting mechanism 7 by bolts. The reactor connection port 12 is also connected to the lower connecting flange 22 by bolts. The lower part of the reactor connection port 12 is provided with a sealing end face for connecting and sealing with the reactor. In other embodiments of the present invention, the lower connecting flange 22 can be omitted, and the packing box 8 is connected to the reactor connection port 12 by bolts. The reactor connection port 12 is then connected to the lower lifting mechanism 7 by bolts.

[0038] Furthermore, the packing box 8 is also provided with a scraper 11 located below the packing 10. The surface of the scraper 11 that contacts the filter rod 50 is provided with protrusions for removing residual liquid from the outer circumference of the filter rod 50. Specifically, the protrusions are preferably corrugated, dotted, or serrated.

[0039] Furthermore, the top of the filter rod 50 is provided with a connecting flange 24 that communicates with the interior of the filter rod 50 for discharging the liquid inside the filter rod 50. Specifically, the connecting flange 24 is welded to the outside of the upper filter rod 51, and the connecting flange 24 is always located above the upper elevator and moves in unison with the up-and-down movement of the filter rod 50.

[0040] In addition, a filter head 25 is provided at the bottom of the filter rod 50. The filter head 25 is connected to the filter rod 50 by threads and sealed with an O-ring. The bottom and side wall of the filter head 25 are provided with openings. The filtrate in the reactor enters the interior of the filter rod 50 through the openings. After sedimentation, the solid particles in the filtrate accumulate in the filter head 25. During cleaning, the filter head 25 can be unscrewed from the lower filter rod 52.

[0041] like Figure 4As shown, the housing 40 is provided with an opening for observing the filter rod 50. Specifically, in a preferred embodiment of the present application, the opening is provided on the lower housing 42, and the lower filter rod 52 is provided with a scale for indicating the depth of the filter rod 50 in the reactor, so that the staff can observe the scale from the opening and know the depth of the filter rod 50 in the reactor.

[0042] Another aspect of the present application provides a catalyst production device, which comprises a reactor, a hose and the above-mentioned plug-in filter rod device for reactor, one end of which extends into the reactor and the other end of which is connected with the hose.

[0043] Specifically, the filter rod 50 of the plug-in filter rod device for reactor extends into the interior of the reactor and is connected and sealed with the reactor through the sealing end face on the reactor connecting port 12, one end of the hose is connected with the counter flange 24 through the flange face and is sealed by an O-ring, so as to realize the delivery of the filtrate in the reactor to the outside of the reactor through the plug-in filter rod device for reactor. In addition, since the filter rod 50 in the plug-in filter rod device for reactor is always in axial operation, the hose connected with the filter rod 50 also moves in the vertical direction, which inevitably contacts or rubs with other equipment, easily causing the damage of the hose. Therefore, in order to reduce the leakage of the filtrate caused by the damage of the hose, the hose is preferably a metal woven hose.

[0044] The preferred embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited thereto. Within the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application, including the combination of various specific technical features in any suitable manner. In order to avoid unnecessary repetition, the present application does not further describe various possible combination manners. However, these simple modifications and combinations should also be regarded as the disclosed content of the present application and belong to the protection scope of the present application.

Claims

1. A pluggable filter rod device for a reactor, characterized in that, The plug-in filter rod device for the reactor includes a housing (40), a first motor (1), and a filter rod (50) coaxially disposed inside the housing (40). The filter rod (50) is driven to the first motor (1) so that it can move axially relative to the housing (40) under the drive of the first motor (1). The plug-in filter rod device for the reactor includes a second motor (16), a lead screw (61) connected to the second motor (16) and sleeved on the outside of the filter rod (50), and a packing box (8) coaxially sleeved on the outside of the filter rod (50). The packing box (8) contains packing (10). The lead screw (61) can axially press the packing (10) under the drive of the second motor (16) so that the packing (10) fits against the outer circumferential surface of the filter rod (50).

2. The pluggable filter rod device for reactors according to claim 1, characterized in that, The packing box (8) is also provided with a scraper (11) located below the packing (10). The scraper (11) has a protrusion on the surface that contacts the filter rod (50) for removing residual liquid from the outer circumference of the filter rod (50).

3. The pluggable filter rod device for reactors according to claim 1, characterized in that, A torque sensor (23) is provided between the second motor (16) and the lead screw (61).

4. The pluggable filter rod device for reactors according to claim 1, characterized in that, The output torque of the second motor (16) is 40 N·m to 60 N·m.

5. The pluggable filter rod device for reactors according to claim 1, characterized in that, The top of the filter rod (50) is provided with a docking flange (24) that communicates with the interior of the filter rod (50) for discharging the liquid inside the filter rod (50).

6. The pluggable filter rod device for reactors according to claim 1, characterized in that, The bottom of the filter rod (50) is provided with a filter head (25), which is connected to the filter rod (50) by a thread and sealed by an O-ring.

7. The pluggable filter rod device for reactors according to claim 1, characterized in that, The housing (40) is provided with an opening for observing the filter rod (50).

8. The pluggable filter rod device for reactors according to claim 1, characterized in that, The filter rod (50) includes an upper filter rod (51) and a lower filter rod (52), which are connected by a flange and sealed by an O-ring.

9. A catalyst production apparatus, characterized in that, The catalyst production apparatus includes a reactor, a hose, and a pluggable filter rod device for the reactor according to any one of claims 1-8, wherein one end of the pluggable filter rod device extends into the reactor and the other end is connected to the hose.

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