Grid type feeder

Abstract

The utility model discloses a grid type feeder. The rotor is arranged in the shell, the bearing end covers are installed at the left end and the right end of the shell and used for supporting the rotor, the left side and the right side of the rotor are respectively provided with a head sealing plate, and the two head sealing plates are respectively opposite to one bearing end cover. The inner side of the shell is provided with garbage grooves which are formed in the left side and the right side of the bottom outlet and serve as material flowing outlets between the left end sealing plate and the right end sealing plate and between the left bearing end cover and the right bearing end cover, and the left end sealing plate and the right end sealing plate are each provided with at least one pair of scraping plates. And each pair of scraping plates on the two end sealing plates directly face the left bearing end cover and the right bearing end cover respectively and can scrape materials entering the space between the end sealing plates and the bearing end covers into the garbage groove. The utility model has the advantages that: the failure rate of equipment is effectively reduced, the reliability and the stability of equipment operation are improved, the service life of the equipment is prolonged, the normal and efficient operation of the equipment is ensured, the labor intensity of maintenance personnel is greatly reduced, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to a supporting device for a pot-type coke oven used in the production of calcined petroleum coke, in particular to a grid feeder. Background Art

[0002] In the production process of calcined petroleum coke, in order to quantitatively and stably discharge the product from the furnace body, a grid feeder is generally installed at the discharge port of each pot-type coke oven. The grid feeder is used because it can adapt to a large range of changes in the material temperature, is suitable for controlling the output of each pot-type coke oven, and has strong tolerance to changes in the material hardness and particle size.

[0003] Existing conventional grid feeders usually include a housing with a top inlet and a bottom outlet, a rotor arranged in the housing, and left and right bearing end covers installed at the left and right ends of the housing for supporting the rotor. Head plates facing the left and right bearing end covers are arranged on the left and right sides of the rotor. Through long-term use, it is found that the existing grid feeder has design defects and cannot adapt to the on-site working conditions of our unit. The specific phenomena are as follows: (1) The drive pin shaft is easily broken; (2) The welded part of the drive device base is welded and torn; (3) The safety pin shaft is broken; (4) The front and rear end covers are cracked and the fixing thread is damaged; (5) The drive ratchet and pawl are damaged; (6) The rotor shaft head is broken; (7) The working resistance of the pull rod is large. This series of situations cause the grid feeder to not work properly, the production work cannot be carried out in an orderly manner, the maintenance workload is increased, and the preparation time before maintenance is relatively long (process preparation, safety prevention preparation). In the case of overhauls such as replacing the movement core that take a long time, it will even affect the calcination temperature for a certain period and have a certain impact on the product quality.

[0004] Through the overhaul and analysis of multiple grid feeders with large working resistance and no hard objects such as carbon crystals, iron parts, and bricks clamped between the rotor and the housing, it is concluded that: the material between the circular head plates on both sides of the rotor and the front and rear bearing covers on both sides of the housing is caked, forming a braking effect, resulting in a large working resistance of the rotor, and thus triggering the above-mentioned faults. Therefore, how to improve its structure has become the key to overcoming the above problems. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to provide a grid feeder that can effectively reduce the equipment failure rate, improve the reliability and stability of equipment operation, increase the service life of the equipment, and ensure the normal and efficient operation of the equipment.

[0006] To solve the above technical problems, the feeding device of the present utility model includes a housing with a top inlet and a bottom outlet, a rotor disposed inside the housing, and bearing end caps installed at both left and right ends of the housing for supporting the rotor. On both left and right sides of the rotor, there is respectively a sealing head plate. The two sealing head plates are respectively opposite to one of the bearing end caps and there is a gap formed between each sealing head plate and the corresponding bearing end cap. Inside the housing, there is a garbage chute disposed on both left and right sides of the bottom outlet and serving as the material flow outlet between the left and right sealing head plates and the left and right bearing end caps. On both left and right sealing head plates, there are provided at least a pair of scraping plates. The pairs of scraping plates on the two sealing head plates respectively face the left and right bearing end caps and can scrape the material entering between the sealing head plate and the bearing end cap into the garbage chute.

[0007] On each of the said sealing head plates, there are provided two pairs of scraping plates. The two scraping plates of each pair of scraping plates are symmetrically arranged and form an angle with the axis of the rotor end face.

[0008] On the working surface of each of the said scraping plates, there is a V-shaped groove.

[0009] The positions of the V-shaped grooves on the two scraping plates of each pair of scraping plates are staggered from each other.

[0010] On the outside of the said housing, there is a reinforcing rib facing the garbage chute.

[0011] The size of the said reinforcing rib is larger than the size of the garbage chute.

[0012] After adopting the above structure, on the one hand, by the garbage chute disposed on both sides of the housing outlet, the caking of the material between the sealing head plate and the bearing end cap is reduced. On the other hand, by the scraping plates disposed on the sealing head plate, the material can be scraped into the garbage chute through the scraping plates, and the material is mutually extruded so as not to generate sediment, thereby avoiding the formation of caking. On the further hand, by the reinforcing rib disposed on the outside of the housing and the size of the reinforcing rib being larger than the size of the garbage chute, the strength of the housing itself is ensured, so that the housing is not damaged when subjected to external force. Its structural design is reasonable, effectively reducing the equipment failure rate, improving the reliability and stability of the equipment operation, increasing the service life of the equipment, ensuring the normal and efficient operation of the equipment, and at the same time greatly reducing the labor intensity of the maintenance personnel and reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic cross-sectional structure view of the feeding device of the present utility model;

[0014] Figure 2 is a schematic side view structure view of the feeding device of the present utility model (inner side view);

[0015] Figure 3 is a schematic side view structure view of the feeding device of the present utility model (outer side view);

[0016] Figure 4 It is a front view structural schematic diagram of the rotor in the present utility model;

[0017] Figure 5 It is a side view structural schematic diagram of the rotor in the present utility model;

[0018] Figure 6 It is a side view structural schematic diagram of the scraping plate in the present utility model;

[0019] Figure 7 It is a structural schematic diagram of the use state of the format feeder in the present utility model. Detailed implementation manners

[0020] The following further elaborates on the format feeder of the present utility model in conjunction with the attached drawings and specific implementation manners.

[0021] As shown in the figure, the modular feeder of the present utility model is applicable to preventing materials from caking between the modular feeder rotor and the middle plates of the two end covers, resulting in a braking effect and damaging the equipment. It includes a housing 3 with a top inlet 1 and a bottom outlet 2, a rotor 4 arranged inside the housing, and two bearing end covers 5 installed at the left and right ends of the housing for supporting the rotor. A ratchet 13 and a pawl 14 located outside the housing are installed on the rotor. The drive rod 12 is driven by a transmission device 11 to synchronously drive multiple modular feeders (prior art, not described in detail herein). For a single modular feeder, a sealing plate is provided on the left side of the rotor 4 in each modular feeder, and a sealing plate is also provided on both the right sides of the rotor 4. The left sealing plate faces a bearing end cover on the left and there is a gap between it and the bearing end cover. The right sealing plate faces a bearing end cover on the right and there is a gap between it and the bearing end cover. The inner side of the housing 3 has a left waste chute provided on the left side of the bottom outlet, and the inner side of the housing 3 also has a right waste chute provided on the right side of the bottom outlet. The left waste chute serves as the material (granules or pulverized coke) flow outlet between the left sealing plate and the left bearing end cover, and the right waste chute serves as the material flow outlet between the right sealing plate and the right bearing end cover. Two pairs of scraping plates are provided on the left sealing plate, and two pairs of scraping plates are also provided on the right sealing plate. The scraping plates cannot have hard friction with the left and right bearing end covers. The two scraping plates of each pair of scraping plates are symmetrically arranged and form an angle with the axis of the rotor end face. The two pairs of scraping plates on each sealing plate are also symmetrically arranged to effectively work when the rotor rotates. The scraping plates on the left sealing plate face the left bearing end cover and can scrape the material entering between the sealing plate and the bearing end cover into the left waste chute. Similarly, the scraping plates on the right sealing plate face the right bearing end cover respectively and can scrape the material entering between the sealing plate and the bearing end cover into the right waste chute. Thus, it can be seen that the function of the scraping plates is that when the material (granules or pulverized coke) enters between the sealing plate and the left and right bearing end covers, it is scraped into the waste chute by the scraping plates, and the materials are mutually extruded so as not to deposit, and thus there is no chance to form caking.

[0022] Furthermore, a V-shaped groove 9 is provided on the working surface of each scraping plate 8 to prevent material accumulation on the sealing plate. The positions of the V-shaped grooves on the two scraping plates of each pair of scraping plates are staggered from each other to perform a secondary cleaning operation and prevent the materials from caking on the surface of the bearing end cover during the first cleaning.

[0023] Still further, reinforcing ribs 10 facing the waste chutes are provided on the outer side of the said housing 3. The size of the reinforcing ribs 10 is larger than the size of the waste chutes to ensure the strength of the housing itself and prevent the housing from being damaged when subjected to external forces.

[0024] Certainly, the above description is not a limitation of the present utility model, and the present utility model is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the substantial scope of the present utility model shall also fall within the protection scope of the present utility model.

Claims

1. A format feeder, comprising a housing (3) having a top inlet (1) and a bottom outlet (2), a rotor (4) disposed within the housing, and bearing end caps (5) mounted at the left and right ends of the housing for supporting the rotor. A sealing plate (6) is respectively disposed on the left and right sides of the rotor (4). It is characterized in that: Two of the said end head plates (6) are respectively opposite to one of the bearing end covers and there is a gap between them and the corresponding bearing end cover. Inside the housing (3), there is a garbage chute (7) arranged on the left and right sides of the bottom outlet and serving as the material flow outlet between the left and right end head plates and the left and right bearing end covers. At least one pair of scraping plates (8) is arranged on each of the left and right end head plates (6). The scraping plates cannot have hard friction with the left and right bearing end covers. Each pair of the scraping plates on the two end head plates (6) is respectively facing the left and right bearing end covers and can scrape the material entering between the end head plate and the bearing end cover into the garbage chute (7).

2. The format feeder according to claim 1, characterized in that: Two pairs of scraping plates are arranged on each of the said end head plates (6). The two scraping plates of each pair of scraping plates are symmetrically arranged and form an angle with the axis of the rotor end face.

3. The format feeder according to claim 1 or 2, characterized in that: A V-shaped groove (9) is arranged on the working surface of each of the said scraping plates (8).

4. The format feeder according to claim 3, characterized in that: The positions of the V-shaped grooves on the two scraping plates of each pair of scraping plates are staggered from each other.

5. The format feeder according to claim 1, 2 or 4, characterized in that: Reinforcing ribs (10) facing the garbage chute are arranged on the outer side of the housing (3).

6. The format feeder according to claim 5, characterized in that: The size of the reinforcing ribs (10) is larger than the size of the garbage chute.

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