Electric crawler-type catalyst filling machine

Abstract

The utility model belongs to the field of catalyst filling machine equipment, and discloses an electric crawler-type catalyst filling machine which comprises an upper-layer stock bin and a lower-layer stock bin, a crawler-type conveying mechanism is arranged at the bottom of the lower-layer stock bin in parallel, and the crawler-type conveying mechanism is formed by connecting a front rotating roller and a rear rotating roller through a frame and fixing the front rotating roller and the rear rotating roller in parallel. The conveyor belt driving shaft and the conveyor belt driven shaft are connected through a conveyor belt, and the conveyor belt driving shaft is provided with a built-in motor as a drive. The filling machine is improved on the basis of an original filling machine, safe voltage is used in a limited space, the use safety is improved, the driving motor is arranged in the driving shaft of the conveying belt, the size and the weight of the filling machine are remarkably reduced, and the problem that carrying is inconvenient is solved. The layout of the upper-layer stock bin is more reasonable, auxiliary tools such as a funnel are not needed, and the filling quality is guaranteed while a large amount of time is saved for filling the catalyst.

Description

Technical Field

[0001] The utility model belongs to the field of catalyst loading machines, and specifically relates to an electric crawler-type catalyst loading machine. Background Art

[0002] Currently, when producing products such as phthalic anhydride and pyromellitic dianhydride, the catalytic oxidation process is generally adopted. The reactor is a shell-and-tube reactor, and the reaction tubes need to be evenly filled with catalysts to ensure that the oxidation reactions in each tube are uniform. Since there are generally thousands to tens of thousands of reaction tubes in current reactors, manual filling is time-consuming and laborious, and the filling uniformity is poor. Therefore, a filling machine is needed to assist in filling. Currently, the filling machines adopted are generally of the vibrating type, which are divided into pneumatic vibration type and electric vibration type.

[0003] The filling machines adopting the vibrating type generally have the following disadvantages:

[0004] 1. The noise is large. The filling work is usually carried out in a closed space, which will further amplify the noise caused by the machine vibration.

[0005] 2. The vibration amplitude of the machine is greatly affected by the weight of the filled catalyst. When the filled catalyst is heavy, the filling speed will decrease. As the weight of the catalyst gradually decreases, the filling speed will gradually increase. Therefore, the overall filling speed of the catalyst is uneven. It will also cause uneven distribution of the catalyst in the reaction tubes.

[0006] 3. The components of the filling machine are prone to fatigue and damage in the long-term vibration environment, and the components need to be frequently repaired and replaced.

[0007] 4. The adjustable range of the vibrating type filling machine is small, and it is impossible to achieve slow-speed filling. When the vibration amplitude is small, the situation of no material discharge usually occurs. Summary of the Invention

[0008] In order to solve the above technical problems existing in the vibrating type catalyst filling machine and the crawler-type filling machine, the utility model uses an electric drive crawler-type conveyor belt, and through a control unit, the catalyst is evenly filled into the reaction tubes, achieving a consistent filling speed, ensuring the filling quality, and at the same time using an internal electric motor, reducing the volume, reducing the weight, making the layout of the upper hopper more reasonable, and avoiding the problem of inconvenient handling at the same time.

[0009] The above object of the utility model is achieved by the following technical solutions:

[0010] Electric crawler-type catalyst loading machine, including an upper bin and a lower bin. At the bottom of the lower bin, a crawler-type conveying mechanism is arranged in parallel. The crawler-type conveying mechanism is connected by a frame with two rotating rollers at the front and rear and fixed in parallel, serving as the conveyor belt driving shaft and the conveyor belt driven shaft respectively. A conveyor belt is connected between the conveyor belt driving shaft and the conveyor belt driven shaft, and an in-built motor is provided on the conveyor belt driving shaft as the drive.

[0011] Furthermore, the upper bin is composed of several hoppers. The bottom of the hoppers corresponds one by one to several conveying channels of the lower bin. At the end of the conveying channels, a discharge port is fixedly connected, and the discharge port is connected to the lower bin by a frame.

[0012] Furthermore, the feed inlet of the upper bin is inclined, with the length shortened by half and the width doubled.

[0013] The bottom of the loading machine is welded with a bottom steel plate. The bottom steel plate is provided with positioning holes slightly smaller than the diameter of the positioning balls to prevent the positioning balls from slipping. Above the positioning holes, a positioning ball cylinder is welded. The positioning balls are placed in the positioning ball cylinders. The upper part of the positioning balls contacts the positioning device spring, and the other end of the positioning device spring is connected to the positioning ball cap and screwed onto the positioning ball cylinder welded to the bottom steel plate.

[0014] Furthermore, each conveying channel is separated by a guiding partition plate to prevent material mixing.

[0015] Furthermore, the number of hoppers is 10.

[0016] The loading machine is connected to an external 24V power supply and the loading speed is adjusted by a speed regulator.

[0017] Compared with the prior art, the beneficial effects of the present utility model compared with the prior art are:

[0018] The present utility model is improved on the basis of the original loading machine. It uses a safety voltage (24V) in a restricted space, improving the safety of use. The drive motor is built into the driving shaft of the conveyor belt, significantly reducing the volume and weight of the loading machine and avoiding the problem of inconvenient handling. The layout of the upper bin is more reasonable, and no auxiliary tools such as funnels are required. It saves a lot of time for loading the catalyst and ensures the quality of loading. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0020] Figure 1 It is the top view of the electric crawler-type catalyst loading machine;

[0021] Figure 2 It is the front view schematic diagram of the electric crawler-type catalyst loading machine;

[0022] Figure 3 It is a side view schematic diagram of an electric crawler - type catalyst loading machine;

[0023] Figure 4 It is a side - sectional view schematic diagram of an electric crawler - type catalyst loading machine;

[0024] Figure 5 It is a schematic diagram of the conveyor belt part of an electric crawler - type catalyst loading machine;

[0025] Figure 6 It is a schematic diagram of the positioning ball part of an electric crawler - type catalyst loading machine.

[0026] In the figure: 1. Conveyor channel, 2. Feeding port, 3. Guiding baffle, 4. Discharge port gate regulator, 5. Bottom steel plate, 6. Upper bin, 7. Lower bin, 8. Speed regulator, 9. Conveyor belt frame, 10. Base, 11. Conveyor belt, 12. Built - in motor, 13. Positioning device spring, 14. Positioning ball, 15. Conveyor belt driving shaft, 16. Conveyor belt driven shaft, 17. Conveyor belt tension adjustment, 18. Thread, 19. Positioning ball cylinder, 20. Positioning ball cap. Specific implementation mode

[0027] The following details the present utility model through specific embodiments, but does not limit the protection scope of the present utility model. Unless otherwise specified, the experimental methods adopted in the present utility model are all conventional methods, and the materials used, etc. can all be obtained from commercial channels. The electric crawler - type catalyst loading machine (hereinafter referred to as the loading machine) is used for loading granular catalysts into a shell - and - tube reactor.

[0028] This embodiment is described by taking a 10 - tube machine as an example, and the number of tubes of the loading machine can be increased or decreased according to needs. For example, it can be reduced to 5 tubes or increased to 20 tubes. The loading principle is the same, and only the size of the machine width needs to be changed to increase or decrease the number of tubes.

[0029] Embodiment 1

[0030] The loading machine includes an upper bin 6 and a lower bin 7. At the bottom of the lower bin 7, a crawler - type conveyor mechanism is arranged in parallel. The crawler - type conveyor mechanism is connected and fixed in parallel by two front - and - rear rotating rollers through a frame, which are respectively used as the conveyor belt driving shaft 15 and the conveyor belt driven shaft 16. A conveyor belt 11 is connected between the conveyor belt driving shaft 15 and the conveyor belt driven shaft 16, and a built - in motor 12 is provided on the conveyor belt driving shaft 15 as a drive.

[0031] The upper bin 6 is composed of several hoppers. The bottom of the hoppers corresponds to several conveyor channels 1 of the lower bin 7 one by one. A feeding port 2 is fixedly connected to the end of the conveyor channel 1, and the feeding port 2 is connected to the lower bin 7 by a frame.

[0032] The feeding port of the upper silo is inclined, the length is shortened by half and the width is doubled.

[0033] The bottom steel plate 5 is provided with a positioning hole which is slightly smaller than the diameter of the positioning ball 14 to prevent the positioning ball from slipping. A positioning ball cylinder 19 is welded above the positioning hole. The positioning ball 14 is placed in the positioning ball cylinder 19. The upper part of the positioning ball 14 contacts the positioning device spring 13. The other end of the positioning device spring 13 is connected to the positioning ball cap 20 and is screwed onto the positioning ball cylinder 19 welded to the bottom steel plate 5 through a thread 18.

[0034] The loader has 10 parallel silos, which can simultaneously load catalysts into 10 reaction tubes. When in use, the loader is first placed on the tube sheet in the reactor, the loader is moved so that the 10 feed tubes 2 are aligned with the reactor tubes, the loader is started, the conveyor belt speed is controlled by the knob of the speed regulator 8, and the speed is adjusted to the required loading speed, and a certain amount of catalyst is poured into the 10 hoppers in the upper silo 6 respectively.

[0035] Since the reaction tubes in the reactor are closely spaced, the loader silos are arranged closely. If the catalyst is poured directly into the side-by-side silos, it is more likely to spill out. The upper silo 6 acts like a funnel, turning the originally elongated rectangular silo into half the original length and twice the width, which is more conducive to adding catalyst.

[0036] The catalyst enters the conveying channel 1 in the lower silo 7 under the "funnel" effect of the upper silo 6. The 10 conveying channels 1 are separated by the material guide partition 3 to avoid mixing. The catalyst in the conveying channel 1 moves toward the lower feeding tube 2 under the action of the conveyor belt 11 below. During the movement, the catalyst can also adjust the gate plate 4 of the discharge port to adjust the gate plate height to control the size of the discharge port, thereby controlling the discharge amount of the catalyst. After the catalyst continues to move toward the lower feeding tube 2 and enters the discharge tube 2, it will follow the discharge tube 2 into the previously aligned reaction tube to complete the filling. After completing the filling of these 10 reaction tubes, the movable loader can be used to move the discharge tube 2 to align with the next row of 10 reaction tubes through the auxiliary positioning of the positioning ball 14. Two devices for positioning the loader are arranged on the base 10. Because the spacing between the reaction tubes in the reactor is fixed, when the 10 discharge tubes are aligned with the reaction tubes, the two positioning balls 14 located on the base will just partially bounce into the reaction tubes to play an auxiliary positioning role. Then you can continue filling.

[0037] Although the utility model has been described in detail above with general instructions and specific examples, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model based on the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection required by the utility model.

Claims

1. Electric crawler-type catalyst loading machine, characterized in that, It includes an upper silo (6) and a lower silo (7). At the bottom of the lower silo (7), a crawler conveyor mechanism is arranged in parallel. The crawler conveyor mechanism is connected by a frame with two rotating rollers at the front and back and fixed in parallel, serving as the conveyor belt driving shaft (15) and the conveyor belt driven shaft (16) respectively. The conveyor belt driving shaft (15) and the conveyor belt driven shaft (16) are connected by a conveyor belt (11), and the conveyor belt driving shaft (15) is provided with a built-in motor (12) as the drive.

2. The electric crawler type catalyst loading machine according to claim 1, characterized in that, The upper silo (6) is composed of several hoppers. The bottom of the hoppers corresponds to several conveying channels (1) of the lower silo (7) one by one. At the end of the conveying channel (1), a feeding port (2) is fixedly connected, and the feeding port (2) is connected to the lower silo (7) by a frame.

3. The electric crawler-type catalyst loading machine according to claim 2, characterized in that, The feeding port of the upper silo (6) is inclined, with its length shortened by half and its width doubled.

4. The electric crawler type catalyst loading machine according to claim 1, characterized in that, Welding is carried out using a bottom steel plate (5). The bottom steel plate (5) is provided with positioning holes slightly smaller than the diameter of the positioning balls (14) to prevent the positioning balls from slipping. Above the positioning holes, a positioning ball cylinder (19) is welded. The positioning balls (14) are placed in the positioning ball cylinder (19). The upper part of the positioning balls (14) contacts the positioning device spring (13). The other end of the positioning device spring (13) is connected to the positioning ball cap (20) and is screwed onto the positioning ball cylinder (19) welded to the bottom steel plate (5) through a thread (18).

5. The electric crawler-type catalyst loading machine according to claim 2, characterized in that, Each conveying channel (1) is separated by a guiding partition board (3) to prevent material mixing.

6. The electric crawler-type catalyst loading machine according to claim 2, characterized in that, The number of hoppers is 10.

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