Pneumatic filling machine

Abstract

The utility model belongs to the field of catalyst filling machine equipment, and discloses a pneumatic filling machine which is characterized in that an upper-layer stock bin and a lower-layer stock bin are communicated through a plurality of hoppers connected in parallel, the bottom of the lower-layer stock bin is fixedly connected with a crawler belt conveying structure, and the front part of the crawler belt conveying structure is fixedly connected with a plurality of material guide partition plates arranged in parallel; one ends of the material guiding partition plates are in one-to-one correspondence with the discharging hoppers, the tail ends of the material guiding partition plates are fixedly connected with discharging openings, the discharging openings are connected with the base, and the crawler belt conveying structure is provided with a built-in pneumatic motor for driving. The pneumatic motor is arranged in the driving shaft of the conveying belt, so that the size and the weight of the filling machine are obviously reduced, and the problem of inconvenience in carrying is avoided. The layout of the upper-layer stock bin is more reasonable, and auxiliary tools such as a funnel are not needed. A large amount of time is saved for filling the catalyst, and meanwhile, the filling quality is ensured.

Description

Technical Field

[0001] The utility model belongs to the field of catalyst filling machine equipment, and specifically relates to a pneumatic filling machine. Background Art

[0002] Phthalic anhydride is the full name of phthalic anhydride. It is an important bulk chemical product. The total domestic production of phthalic anhydride exceeds 2 million tons / year. The reactor is usually a tube-type fixed bed reactor. The catalyst used in this process usually uses talc ceramic rings as carriers, and the active components are evenly attached to the outer surface of the carrier. When in use, the catalyst needs to be evenly filled in each reaction tube. Phthalic anhydride reactors usually have thousands to tens of thousands of reaction tubes. Manual loading is time-consuming and labor-intensive and has large errors, so a loading machine is needed to assist in loading.

[0003] The catalyst loader currently in use is of the vibration type, which requires a pneumatic vibrator or an electric vibrator to vibrate the hopper so that the catalyst can be loaded into the reaction tube. However, the frequency and intensity of the vibration will be affected by the vibration position and the weight of the catalyst, thereby affecting the speed and quality of loading. There are also similar electric conveyor crawler loaders, but they are limited by the usage scenarios and have some special confined spaces for operation. There are clear regulations on safety voltage, and the size and weight are large, making it difficult to carry and transport.

[0004] Existing crawler loaders generally have the following disadvantages:

[0005] 1. The drive motor is external, which makes the loader heavier and larger, making it difficult to carry and transfer.

[0006] 2. Since the opening of the upper hopper is narrow, a special funnel is required for loading.

[0007] 3. Existing crawler loaders are all driven by motors, which can easily cause heat and damage the machine after long-term use. In addition, the environment in which the loaders are used to load catalysts is mostly closed spaces, and there are safety hazards in the use of electricity. Summary of the invention

[0008] In order to solve the technical problems existing in the above-mentioned vibrating catalyst loaders and crawler loaders, the utility model uses a pneumatically driven crawler conveyor belt and, through a control unit, loads the catalyst into the reaction tube at a uniform speed to achieve a consistent loading speed and ensure the loading quality. At the same time, a built-in pneumatic motor is used to reduce the volume, reduce the weight, and make the layout of the upper hopper more reasonable, while avoiding the problem of inconvenient handling.

[0009] The above-mentioned purpose of the utility model is achieved through the following technical solutions:

[0010] A pneumatic loader, in which several parallel hoppers connect the upper storage bin and the lower storage bin. A crawler conveyor structure is fixedly connected to the bottom of the lower storage bin. Several parallel guide baffles are fixedly connected to the front of the crawler conveyor structure. One end of each guide baffle corresponds to a feeding hopper, and a discharge port is fixedly connected to the end of the guide baffle. The discharge port is connected to the base, and the crawler conveyor structure is driven by an internal pneumatic motor.

[0011] Furthermore, the loader is connected to an external air source and the loading speed is adjusted through a pneumatic pressure regulating unit.

[0012] Furthermore, open the compressed air valve and control the loading speed by adjusting the pneumatic pressure regulating knob.

[0013] Furthermore, the pneumatic pressure regulating unit is an air source distribution box. One end of the main regulating valve is connected to the external air source, and the other end is connected to several air source outlets through pipelines. Each pipeline where the air source outlet is located is provided with a branch regulating valve, and the main pipeline where the main regulating valve is located is also connected to an air source outlet.

[0014] Furthermore, the crawler conveyor structure is: a conveyor belt is connected between the conveyor belt driving shaft and the conveyor belt driven shaft, and the conveyor belt driving shaft is provided with an internal pneumatic motor.

[0015] Furthermore, a conveyor belt tension adjustment is provided between the conveyor belt driving shaft and the conveyor belt driven shaft.

[0016] Compared with the prior art, the beneficial effects of the present utility model compared with the prior art are as follows:

[0017] The present utility model is improved on the basis of the original loader. In a limited space, it does not require the use of electricity, only compressed air is used, the machine has explosion-proof performance, does not heat up during long-term use, improves the safety of use, and the pneumatic motor is built into the driving shaft of the conveyor belt, significantly reducing the volume and weight of the loader, avoiding the problem of inconvenient handling. The layout of the upper storage bin is more reasonable, and auxiliary tools such as funnels are not required. It saves a lot of time for loading the catalyst and ensures the quality of loading. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0019] Figure 1 is a schematic side cross-sectional view of the pneumatic loader;

[0020] Figure 2 is a schematic view of the conveyor belt part of the pneumatic loader;

[0021] Figure 3 is a schematic view of the pneumatic pressure regulating unit of the pneumatic loader;

[0022] Figure 4 It is a schematic diagram of the air source distribution box of a pneumatic loader.

[0023] In the figure: 1. Upper layer bin, 2. Lower layer bin, 3. Guide baffle, 4. Discharge port, 5. Base, 6. Conveyor belt frame, 7. Air pressure regulating unit, 11. Conveyor belt, 12. Built-in pneumatic motor, 13. Compressed air valve, 14. Air pressure regulating knob, 15. Conveyor belt driving shaft, 16. Conveyor belt driven shaft, 17. Conveyor belt tension adjustment, 18. External air source, 19. Main regulating valve, 20. Sub-regulating valve, 21. Air source outlet. Specific implementation mode

[0024] The following details the present invention through specific embodiments, but does not limit the protection scope of the present invention. Unless otherwise specified, the experimental methods adopted in the present invention are all conventional methods, and the materials used can be obtained from commercial channels. The loader of the present invention can be used for filling granular catalysts in a shell-and-tube reactor.

[0025] The discharge port 4 in the present invention is fixed on the same steel plate by welding, and the steel plate is connected to the loader by screws, and the blanking pipe sets with different diameters and spacings can be replaced according to different actual filling requirements.

[0026] Currently, 10-tube machines are mainly used, and the number of tubes of the loader can be increased or decreased according to needs. For example, it can be reduced to 5 tubes or increased to 20 tubes. The filling principle is the same, and only the size of the machine width needs to be changed to increase or decrease the number of tubes.

[0027] Embodiment 1

[0028] For the pneumatic loader, the upper layer bin 1 and the lower layer bin 2 are connected by a plurality of parallel hoppers. The bottom of the lower layer bin 2 is fixedly connected with a crawler conveyor structure. A plurality of parallel guide baffles 3 are fixedly connected to the front part of the crawler conveyor structure. One end of the guide baffle 3 corresponds to the blanking hopper one by one. The end of the guide baffle 3 is fixedly connected with a discharge port 4, and the discharge port 4 is connected to the base 5. The crawler conveyor structure is driven by a built-in pneumatic motor 12.

[0029] The loader is connected to an external air source and the filling speed is adjusted through the air pressure regulating unit 7.

[0030] The air pressure regulating unit 7 controls the filling speed by opening the compressed air valve 13 and adjusting the air pressure regulating knob 14.

[0031] The air pressure regulating unit 7 is an air source distribution box. One end of the main regulating valve 19 is connected to the external air source 18, and the other end is connected to a plurality of air source outlets 21 through a pipeline. Sub-regulating valves 20 are provided on the pipelines where the air source outlets 21 are located, and the main pipeline where the main regulating valve 19 is located is also connected to an air source outlet 21.

[0032] The crawler conveyor structure is as follows: A conveyor belt 11 is connected between a conveyor belt driving shaft 15 and a conveyor belt driven shaft 16, and an internal pneumatic motor 12 is provided on the conveyor belt driving shaft 15.

[0033] A conveyor belt tension adjustment is provided between the conveyor belt driving shaft 15 and the conveyor belt driven shaft 16.

[0034] During use, place the loader on the tube sheet, align the discharge port 4 with the reaction tubes one by one, connect the loader to an external air source, adjust the air pressure to an appropriate size and turn on the internal pneumatic motor 1.

[0035] Simultaneously load a number of portions of quantitatively measured catalyst into the upper hopper 1. The catalyst falls from each hopper into the gaps separated by the lower guiding partition plate 3, and thus drops onto the conveyor belt 11. The catalyst is uniformly conveyed by the conveyor belt 1 to reach the discharge port 4 and is discharged into the reaction tube. Wait for a certain period of time until the catalyst loading is completed, then move the discharge port 4 of the loader to align with the next row of reaction tubes, and repeat this step to continuously carry out the catalyst loading until it is finished.

[0036] Although the present utility model has been described in detail with general descriptions and specific examples above, based on the present utility model, some modifications or improvements can be made, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present utility model all fall within the scope of protection required by the present utility model.

Claims

1. A pneumatic loader, characterized in that the upper layer The silo (1) and the lower silo (2) are connected through a number of parallel hoppers. The bottom of the lower silo (2) is fixedly connected to a crawler conveyor structure. A number of parallel material guiding partitions (3) are fixedly connected to the front of the crawler conveyor structure. One end of each material guiding partition (3) corresponds to a discharging hopper one by one. The end of the material guiding partition (3) is fixedly connected to a discharge port (4). The discharge port (4) is connected to the base (5). The crawler conveyor structure is driven by an internal pneumatic motor (12).

2. The pneumatic loading machine according to claim 1, characterized in that, The filling machine is connected to an external air source and the filling speed is adjusted through a pneumatic pressure regulating unit (7).

3. The pneumatic loading machine according to claim 2, characterized in that, The pneumatic pressure regulating unit (7) controls the filling speed by adjusting the pneumatic pressure regulating knob (14).

4. The pneumatic loader according to claim 2, characterized in that the air pressure The regulating unit (7) is an air source distribution box. One end of the main regulating valve (19) is connected to the external air source (18), and the other end is connected to a number of air source outlets (21) through pipelines. The pipelines where the air source outlets (21) are located are all provided with branch regulating valves (20). The main pipeline where the main regulating valve (19) is located is also connected to an air source outlet (21).

5. The pneumatic loader according to claim 1, characterized in that, The crawler conveyor structure is: a conveyor belt driving shaft (15) and a conveyor belt driven shaft (16) are connected by a conveyor belt (11), and the conveyor belt driving shaft (15) is provided with an internal pneumatic motor (12).

6. The pneumatic loader according to claim 5, wherein A conveyor belt tension adjustment (17) is provided between the conveyor belt driving shaft (15) and the conveyor belt driven shaft (16).

Images