Novel integrated negative-pressure catalyst screening device

Abstract

The utility model discloses a negative pressure integrated novel catalyst screening device which comprises a mounting plate, one side of the upper end face of the mounting plate is fixedly connected with a screening assembly, the discharging end of the screening assembly is fixedly connected with a rotary feeding assembly, and an air compressor and a roots blower are arranged in the middle of the upper end face of the mounting plate. A pulse cloth bag dust removal assembly is arranged on the side, away from the mounting plate, of the upper end face of the mounting plate, the roots blower communicates with the top discharging end of the pulse cloth bag dust removal assembly, and the screening assembly communicates with the feeding end of the pulse cloth bag dust removal assembly. The roots blower works to provide a negative pressure environment for the interior of the screening assembly and the interior of the pulse cloth bag dust removal assembly. By arranging the screening assembly, negative pressure power is provided for catalyst feeding, screening and dust collection at the same time, the equipment structure is simplified, pipeline arrangement is reduced, meanwhile, a catalyst does not need to flow in multiple pieces of equipment, and the breakage rate of the catalyst is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of catalyst screening, in particular to a new type of negative pressure integrated catalyst screening device. Background Art

[0002] The catalysts used in sulfuric acid production equipment are divided into vanadium catalysts and cesium catalysts, among which the content of vanadium and cesium is between 2-5%, which is of great recycling value; after a period of use, the catalyst will be pulverized, causing the system resistance to increase. In order to maintain production, the catalyst must be screened to remove the powder. The existing sulfuric acid catalyst screening technology is divided into manual screening and negative pressure suction split screening. Manual screening is difficult to meet production needs due to the large amount of dust, high labor intensity of the staff, and low work efficiency. Negative pressure suction split screening is widely used in catalyst screening due to its low crushing rate and the ability to avoid the impact of dust on the human body.

[0003] The application number 202120324380.X disclosed a suction screening device, including: a cyclone separation component, which receives the vanadium catalyst raw material; a suction component, which is arranged at the upper end of the cyclone separation component, and provides suction power to suck the vanadium catalyst raw material from the external converter into the cyclone separation component; a screening component, which is arranged at the lower end of the cyclone separation component, and screens the vanadium catalyst raw material to obtain a vanadium catalyst; a dust removal component, which is arranged on one side of the cyclone separation component and is respectively connected to the suction component and the screening component, and removes dust from the vanadium catalyst raw material. The utility model effectively solves the problems of high labor intensity, poor working environment, low efficiency and high breakage rate of workers in the process of manually screening vanadium catalysts.

[0004] The existing suction and screening device realizes the suction and screening of the catalyst through two different devices respectively. The catalyst passes through many devices, and the contact friction and wear are large, which increases the breakage rate of the catalyst during the screening process. In addition, when the cyclone separator is used for screening, the catalyst in the cyclone separator is damaged by friction and wear with the inner wall of the cyclone separator due to the centrifugal force. The breakage rate of the catalyst during the screening process is increased. At the same time, the rolling screen is not in the suction negative pressure system. In order to solve the dust at the rolling screen outlet, a separate dust extraction pipe needs to be equipped at the rolling screen outlet. Utility Model Content

[0005] The purpose of the utility model is to provide a new type of negative pressure integrated catalyst screening device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides a new type of negative pressure integrated catalyst screening device, including a mounting plate, a screening component is fixedly connected to one side of the upper end surface of the mounting plate, a rotating feeding component is fixedly connected to the discharge end of the screening component, an air compressor and a Roots blower are arranged in the middle of the upper end surface of the mounting plate, a pulse bag dust collection component is arranged on the side of the upper end surface of the mounting plate away from the mounting plate, the Roots blower is connected to the top discharge end of the pulse bag dust collection component, the screening component is connected to the feed end of the pulse bag dust collection component, and the Roots blower works to provide a negative pressure environment for the inside of the screening component and the pulse bag dust collection component.

[0007] As a further preference, a control component is also provided on the upper end surface of the mounting plate, and the control component is electrically connected to the air compressor, Roots blower, rotary feeding component, screening component and pulse bag dust removal component.

[0008] As a further preference, the screening assembly includes a negative pressure screening box, a suction hose is fixedly connected to the top of the negative pressure screening box, a screen is provided on the inner wall of the negative pressure screening box, the screen separates the negative pressure screening box into an upper and lower part, and a vibrating screen suction port and a discharge pipe are provided on the outer wall of the negative pressure screening box, the suction hose and the discharge pipe are connected to the upper part of the negative pressure screening box, and the vibrating screen suction port is connected to the lower part of the negative pressure screening box.

[0009] As a further preference, the screen is obliquely arranged on the inner wall of the negative pressure sub-screen box, and the upper end of the screen is hingedly connected to the side wall of the negative pressure sub-screen box, a plurality of groups of elastic components are spaced at intervals at the bottom of the lower end of the screen, a partition plate is fixedly connected to the bottom of the inner cavity of the negative pressure sub-screen box, and a plurality of groups of elastic components are fixedly connected to the top of the partition plate at one end facing away from the screen.

[0010] As a further preference, the rotary feeding assembly includes a rotary feeder, the top of the rotary feeder is connected to the discharge pipe, the lower end of the rotary feeder is fixedly connected to a collection box, and the side wall of the collection box is provided with a discharge port.

[0011] As a further preference, the pulse bag dust collection assembly includes a pulse bag dust collector, the upper end of the pulse bag dust collector is fixedly connected to a pulse bag dust collector suction hose and a compressed air pipe, the pulse bag dust collector is connected to the air inlet end of the Roots blower through the pulse bag dust collector suction hose, the pulse bag dust collector is connected to the air outlet end of the air compressor through the compressed air pipe, a dust bag is arranged in the pulse bag dust collector, the lower end of the outer wall of the pulse bag dust collector is fixedly connected to a vibrating screen suction hose, and the dust bag is connected to the vibrating screen suction port through the vibrating screen suction hose.

[0012] As a further preference, the lower end of the pulse bag dust collector is fixedly connected to a collecting hopper, a discharging end of the collecting hopper is provided with a rotary feeder, and a discharging end of the rotary feeder is fixedly connected to a screw conveyor.

[0013] As a further preference, the rotary feeder includes a discharge box, a feed pipe is fixedly connected to the top of the discharge box, a motor is installed on the side wall of the discharge box, the output end of the motor passes through the side wall of the discharge box and is fixedly connected to a sealing roller, a plurality of groups of measuring troughs are spaced apart on the outer wall of the sealing roller, a discharge port is fixedly connected to the bottom of the discharge box, and the outer wall of the sealing roller is tangent to the inner wall of the discharge box, the feed pipe and the discharge port at the same time.

[0014] Through the above technical solution, the negative pressure integrated new catalyst screening device provided by the utility model has the following benefits:

[0015] The utility model provides a screening component, and the catalyst enters the negative pressure screening box through a suction hose, is screened through the screen, and is recovered from the discharge pipe through a rotary feeder. At the same time, a negative pressure condition is provided inside the negative pressure screening box at the working position of the Roots blower, so that the dust passes through the screen, passes through the suction port of the vibrating screen, the suction hose of the vibrating screen, and then passes through the dust bag for filtration. The filtered air is discharged through the suction hose of the pulse bag dust collector and the Roots blower. The Roots blower provides negative pressure power for catalyst feeding, screening and dust collection, simplifies the equipment structure, reduces the arrangement of pipelines, and at the same time, the catalyst does not need to flow in multiple devices, thereby reducing the breakage rate of the catalyst.

[0016] At the same time, the rotary feeder arranged at the discharge end of the discharge pipe and the collecting hopper, the outer wall of the sealing roller is tangent to the inner wall of the discharge box, and is tangent to the feed pipe and the outlet of the discharge port. The catalyst falls into the measuring trough, and the motor rotates to transfer the catalyst entering the feed pipe to the discharge port for discharge without destroying the negative pressure environment inside the feed pipe. The motor drives the sealing roller to rotate continuously to achieve continuous discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the novel negative pressure integrated catalyst screening device of the utility model.

[0018] Figure 2 This is a schematic diagram of the half-section structure of the screening component of the utility model

[0019] Figure 3 This is a schematic diagram of the structure of the rotary feeding assembly of the utility model.

[0020] Figure 4 It is a schematic diagram of the structure of the pulse bag dust removal component of the utility model.

[0021] Figure 5 It is a schematic diagram of the cross-sectional structure of the feeder part of the utility model.

[0022] In the figure: 1 mounting plate, 2 air compressor, 3 Roots blower, 4 control component, 5 rotary feeding component, 51 pulse bag dust collector, 511 feed pipe, 512 discharge box, 513 sealing roller, 514 motor, 515 discharge port, 516 measuring trough, 52 collection box, 53 discharge port, 6 screening component, 61 suction hose, 62 screen, 63 vibration screen suction port, 64 support leg, 65 negative pressure screening box, 66 discharge pipe, 67 elastic component, 7 pulse bag dust collector component, 71 pulse bag dust collector suction hose, 72 pulse bag dust collector, 73 vibration screen suction hose, 74 collection hopper, 75 screw conveyor, 76 dust bag, 77 compressed air pipe. DETAILED DESCRIPTION

[0023] 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.

[0024] The utility model is further described in detail with reference to the accompanying drawings.

[0025] See also Figure 1 - Figure 5 The utility model provides a new type of negative pressure integrated catalyst screening device, which includes a mounting plate 1, an air compressor 2, a Roots blower 3, a control component 4, a rotary feeding component 5, a screening component 6 and a pulse bag dust removal component 7.

[0026] Among them, see Figure 1 The screening component 6 is arranged at the top of one end of the mounting plate 1, and is used to receive and screen the catalyst. The rotary feeding component 5 is arranged at the discharge end of the screening component 6, and the screened catalyst is discharged without destroying the negative pressure environment inside the screening component 6. The pulse bag dust removal component 7 is arranged at the other end of the top of the mounting plate 1, and the dust airflow extracted from the inside of the screening component 6 is collected and filtered. The Roots blower 3 is connected to the air outlet end of the pulse bag dust removal component 7 to provide a negative pressure environment inside the pulse bag dust removal component 7 and the screening component 6, thereby providing power for catalyst feeding, dust screening flow and filtration. The air compressor 2 is connected to the top of the pulse bag dust removal component 7 to provide a back-blowing air source for the pulse bag dust removal component 7. The control component 4 is arranged on the upper end surface of the mounting plate 1, and is electrically connected to the air compressor 2, the Roots blower 3, the rotary feeding component 5, the screening component 6 and the pulse bag dust removal component 7 for controlling and regulating the working state of the above-mentioned equipment.

[0027] See also Figure 2 The screening assembly 6 includes a negative pressure screening box 65, two groups of legs 64 are fixedly connected at intervals at the bottom of the negative pressure screening box 65, the lower ends of the legs 64 are fixedly connected to the upper end surface of the mounting plate 1 to support the negative pressure screening box 65, a screen 62 is obliquely arranged in the negative pressure screening box 65, the upper end of the screen 62 is hingedly connected to the side wall of the negative pressure screening box 65, a partition plate is fixedly connected to the bottom of the inner cavity of the negative pressure screening box 65, the lower end of the screen 62 is set on the top of the partition plate, and the lower end surface is spaced apart. A dry group of elastic components 67, several groups of elastic components 67 are fixedly connected to the top of the partition plate on the side facing away from the screen 62, the screen 62 and the partition plate separate the inner cavity of the negative pressure screening box 65 into two parts, the outer wall of the negative pressure screening box 65 is fixedly connected with a suction hose 61, the negative pressure screening box 65 and a discharge pipe 66, wherein the suction hose 61 and the discharge pipe 66 are connected to the upper part of the inner cavity of the negative pressure screening box 65, and the vibration screen suction port 63 is connected to the lower part of the inner cavity of the negative pressure screening box 65.

[0028] It can be understood that the catalyst enters the upper part of the inner cavity of the negative pressure screening box 65 through the suction hose 61. When the catalyst is scattered on the upper end surface of the screen 62, the elastic component 67 at the lower end of the screen 62 is compressed to buffer the catalyst, thereby reducing the damage of the catalyst caused by the collision with the screen 62 due to the spillage. The catalyst screened by the screen 62 is discharged from the discharge pipe 66, and the screened dust is discharged through the suction port 63 of the vibrating screen.

[0029] See also Figure 3 and Figure 5 The rotary feeding assembly 5 includes a rotary feeder 51, a collection box 52 is fixedly connected to the lower end of the rotary feeder 51, a discharge port 53 is provided on the front end surface of the collection box 52, the rotary feeder 51 includes a discharge box 512, a feed pipe 511 is fixedly connected to the top of the discharge box 512, the feed pipe 511 is communicated with the discharge pipe 66, and the screened catalyst is guided into the discharge box 512, a sealing roller 513 is rotatably connected inside the discharge box 512, a motor 514 is installed on the outer wall of the discharge box 512, the output end of the motor 514 passes through the side wall of the discharge box 512 and is fixedly connected to the sealing roller 513, a plurality of groups of measuring grooves 516 are spaced apart on the outer wall of the sealing roller 513, a discharge port 515 is fixedly connected to the bottom of the discharge box 512, and the discharge port 515 is communicated with the feed end of the collection box 52.

[0030] It can be understood that the sealing roller 513 is tangent to the inside of the discharge box 512 and the feed pipe 511 and the discharge port 515 at the same time, and the length of the measuring trough 516 is adapted to the inner diameter of the feed pipe 511 and the discharge port 515. The catalyst flows into the measuring trough 516 from the feed pipe 511 and falls into the measuring trough 516. The motor 514 drives the sealing roller 513 to rotate, so that the measuring trough 516 filled with the catalyst rotates until it is connected to the discharge port 515, thereby realizing the discharge of the catalyst without destroying the negative pressure environment inside the feed pipe 511.

[0031] It should be added that a packaging bag is provided at the discharge port 53, and the catalyst can be transported into the packaging bag for recycling.

[0032] See also Figure 4 The pulse bag dust removal assembly 7 includes a pulse bag dust collector 72, a dust bag 76 is arranged inside the pulse bag dust collector 72, a pulse bag dust collector suction hose 71 and a compressed air pipe 77 are fixedly connected to the upper end of the side wall of the pulse bag dust collector 72, a vibration screen suction hose 73 is fixedly connected to the lower end of the outer wall of the pulse bag dust collector suction hose 71, the pulse bag dust collector suction hose 71 is connected to the air inlet end of the Roots blower 3, one end of the vibration screen suction hose 73 is connected to the vibration screen suction port 63, and the other end is connected to the dust bag 76 feed end, the Roots blower 3 works as a pulse bag dust collector 72 and a negative pressure A negative pressure condition is provided inside the screening box 65, and at the same time, power is provided for the feeding of the suction hose 61, the flow of dust in the vibration screen suction hose 73, and the filtration and collection of dust airflow in the dust bag 76. The compressed air pipe 77 is connected to the air outlet end of the air compressor 2, and a back-blowing air source is provided for the pulse bag dust collector 72. A collecting hopper 74 is provided at the bottom of the pulse bag dust collector 72, and a screw conveyor 75 is provided at the lower end of the collecting hopper 74 through a rotary feeder 51. The dust filtered by the dust bag 76 is collected through the collecting hopper 74, and the dust is discharged into the screw conveyor 75 through the rotary feeder 51 for transportation and collection.

[0033] It should be noted that the screw conveyor 75 includes a driving motor, a conveying pipe and an auger shaft. The conveying pipe is connected to the discharge port 515. Dust enters the conveying pipe. The driving motor drives the auger shaft to rotate to convey the dust.

[0034] Principle: When the Roots blower 3 is working, the pulse bag dust collector 72 and the negative pressure screening box 65 are in a negative pressure state, and the port of the suction hose 61 is in contact with the catalyst to be treated, and the catalyst is sucked into the upper part of the inner cavity of the negative pressure screening box 65 through the negative pressure. The catalyst is screened by the screen 62 and discharged through the discharge pipe 66, and then discharged through the rotary feeder 51. A packaging bag is set at the discharge port 53, and the catalyst is transported into the packaging bag for recycling. At the same time, the screened and negative pressure-driven dust passes through the vibration screen suction port 63 and the vibration screen suction hose 73 into the dust bag 76 for filtration and collection. The filtered exhaust gas is discharged through the pulse bag dust collector suction hose 71 and the Roots blower 3, and the collected dust is discharged through the rotary feeder 51, and finally transported through the screw conveyor 75. After the screening is completed, the air compressor 2 works to provide backblowing airflow for the pulse bag dust collector 72 through the compressed air pipe 77 to promote dust discharge.

[0035] 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 negative pressure integrated catalyst screening device, comprising a mounting plate (1), characterized in that: A screening component (6) is fixedly connected to one side of the upper end surface of the mounting plate (1), and a rotary feeding component (5) is fixedly connected to the discharge end of the screening component (6). An air compressor (2) and a Roots blower (3) are arranged in the middle of the upper end surface of the mounting plate (1). A pulse bag dust removal component (7) is arranged on the side of the upper end surface of the mounting plate (1) away from the mounting plate (1). The Roots blower (3) is connected to the top discharge end of the pulse bag dust removal component (7), and the screening component (6) is connected to the feed end of the pulse bag dust removal component (7). The Roots blower (3) works to provide a negative pressure environment inside the screening component (6) and the pulse bag dust removal component (7).

2. The negative pressure integrated novel catalyst screening device according to claim 1 is characterized in that: The upper end surface of the mounting plate (1) is also provided with a control component (4), and the control component (4) is electrically connected to the air compressor (2), the Roots blower (3), the rotary feeding component (5), the screening component (6) and the pulse bag dust removal component (7).

3. The negative pressure integrated novel catalyst screening device according to claim 1 is characterized in that: The screening assembly (6) comprises a negative pressure screening box (65), a suction hose (61) is fixedly connected to the top of the negative pressure screening box (65), a screen (62) is arranged on the inner wall of the negative pressure screening box (65), the screen (62) separates the negative pressure screening box (65) into two parts, an upper part and an lower part, and an outer wall of the negative pressure screening box (65) is provided with a vibration screen suction port (63) and a discharge pipe (66), the suction hose (61) and the discharge pipe (66) are connected to the upper part of the negative pressure screening box (65), and the vibration screen suction port (63) is connected to the lower part of the negative pressure screening box (65).

4. The negative pressure integrated novel catalyst screening device according to claim 3 is characterized in that: The screen (62) is obliquely arranged on the inner wall of the negative pressure sub-screen box (65), and the upper end of the screen (62) is hingedly connected to the side wall of the negative pressure sub-screen box (65), and a plurality of groups of elastic components (67) are spaced apart at the bottom of the lower end of the screen (62), and a partition plate is fixedly connected to the bottom of the inner cavity of the negative pressure sub-screen box (65), and a plurality of groups of the elastic components (67) are fixedly connected to the top of the partition plate at one end facing away from the screen (62).

5. The negative pressure integrated novel catalyst screening device according to claim 4 is characterized in that: The rotary feeding assembly (5) comprises a rotary feeder (51), the top of the rotary feeder (51) is connected to the discharge pipe (66), the lower end of the rotary feeder (51) is fixedly connected to a collection box (52), and the side wall of the collection box (52) is provided with a discharge port (53).

6. The negative pressure integrated novel catalyst screening device according to claim 5 is characterized in that: The pulse bag dust collector assembly (7) comprises a pulse bag dust collector (72), the upper end of which is fixedly connected to a pulse bag dust collector suction hose (71) and a compressed air pipe (77), the pulse bag dust collector (72) is connected to the air inlet end of the Roots blower (3) via the pulse bag dust collector suction hose (71), the pulse bag dust collector (72) is connected to the air outlet end of the air compressor (2) via the compressed air pipe (77), a dust bag (76) is arranged in the pulse bag dust collector (72), the lower end of the outer wall of the pulse bag dust collector (72) is fixedly connected to a vibration screen suction hose (73), and the dust bag (76) is connected to the vibration screen suction port (63) via the vibration screen suction hose (73).

7. The negative pressure integrated novel catalyst screening device according to claim 6 is characterized in that: The lower end of the pulse bag dust collector (72) is fixedly connected to a collecting hopper (74), a rotary feeder (51) is provided at the discharge end of the collecting hopper (74), and a screw conveyor (75) is fixedly connected to the discharge end of the rotary feeder (51).

8. The negative pressure integrated novel catalyst screening device according to claim 7 is characterized in that: The rotary feeder (51) comprises a discharge box (512), the top of the discharge box (512) is fixedly connected to a feed pipe (511), a side wall of the discharge box (512) is installed with a motor (514), the output end of the motor (514) passes through the side wall of the discharge box (512) and is fixedly connected to a sealing roller (513), the outer wall of the sealing roller (513) is provided with a plurality of groups of measuring grooves (516) at intervals, the bottom of the discharge box (512) is fixedly connected to a discharge port (515), and the outer wall of the sealing roller (513) is tangent to the inner wall of the discharge box (512), the feed pipe (511) and the discharge port (515) at the same time.

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