An automatic repositioning of a material flow device for a chain grate

Abstract

The utility model belongs to the material slide device technical field of chain and grate machine, especially relate to a kind of automatic reset material slide device of chain and grate machine. Including support, support is equipped with two high support plate and two low support plate, and low support plate is opened with inclined clamping groove, hinged material slide plate between two high support plates, support rod is welded in the two sides of the other end of material slide plate, two support rods are respectively clamped in the clamping groove of two low support plates, the bottom end of material slide plate is fixed with connecting column, lifting cylinder is hinged on support, lifting cylinder other end is connected connecting column through strip ring sleeve, and anyone of two low support plates is equipped with proximity switch. The utility model can be when appearing chain and grate machine side plate warping, make material slide plate follow be jacked up, to prevent material slide plate displacement caused by rigid connection.

Description

Technical Field

[0001] This utility model belongs to the technical field of material feeding devices for chain grate machines, and particularly relates to an automatic reset material feeding device for chain grate machines. Background Technology

[0002] In the pellet production process of a rotary kiln using a chain grate machine, the chain grate machine distributes green pellets evenly onto a wide belt via a reciprocating oscillating belt. The green pellets on the wide belt are then screened by a small sieve and finally placed onto the grate bed by a chute. The chute slows down the falling speed of the green pellets, preventing them from directly impacting the grate bed and generating powder, which would affect the air permeability of the chain grate machine and consequently the product quality. The falling speed and the thickness of the pellets on the grate bed can be controlled by adjusting the chute's inclination angle.

[0003] The existing chute has the following problems:

[0004] (1) Poor wear resistance. The material of the chute plate is a high-polymer wear-resistant liner. After two months of use, grooves begin to appear due to erosion. The grooves are prone to material accumulation, resulting in uneven material distribution. This also leads to uneven heat penetration within the chain grate, poor heat utilization efficiency, and affects the quality of the pellets. Moreover, cleaning up the accumulated material is frequent and labor-intensive.

[0005] (2) Long processing time after displacement. The two sides of the conveyor plate are welded and fixed to the base support. When the side plate of the chain grate machine tilts up, it scrapes against the conveyor plate, and the weld on the scraping side of the conveyor plate will break and displace (e.g. Figure 9 As shown in the image, the machine was forced to shut down. Each reset of the chute takes 2 hours, resulting in a long processing time and severely impacting pellet production.

[0006] (3) Unreasonable angle. To prevent the grate plate of the chain grate machine from scraping the chute plate when it tilts up, the chute plate is designed with an inclination angle of 42°, and the lower edge is about 20cm away from the grate bed. The height is relatively large, and the green balls fall through the chute plate at a fast speed and with a large impact force, making them very easy to break and generate powder. The increase in powder accelerates the ring formation speed during the rotary kiln firing process.

[0007] (4) When the side plate of the chain grate is raised, it needs to be inspected. However, the distance between the chute and the chain grate is small, and the inspection space is insufficient, which makes the inspection difficult. Moreover, after the chute is displaced, the wide belt of the feeding belt cannot be stopped in time, so the raw balls continue to fall and land on the ground from the displacement point of the chute, causing material loss and increasing the cleaning workload. Summary of the Invention

[0008] The purpose of this invention is to provide an automatic reset and feeding device for a chain grate machine to solve the problems existing in the prior art.

[0009] The technical solution adopted by this utility model to solve its technical problem is:

[0010] An automatic reset feeding device for a chain grate machine includes a support frame with two high support plates and two low support plates. The low support plates have inclined slots. A feeding plate is hinged between the two high support plates. Support rods are welded to both sides of the other end of the feeding plate. The two support rods are respectively engaged in the slots of the two low support plates. A connecting column is fixed to the bottom end of the feeding plate. A lifting cylinder is hinged to the support frame. The other end of the lifting cylinder is connected to the connecting column through a strip ring. A proximity switch is installed on either of the two low support plates.

[0011] Furthermore, side baffles are fixed on both sides of the chute, and a U-shaped frame is welded together on the two side baffles. Slide grooves are provided on both sides inside the U-shaped frame. A material blocking cylinder is installed on the U-shaped frame. The output end of the material blocking cylinder passes through the U-shaped frame and is fixed with a material blocking plate. The two ends of the material blocking plate are respectively inserted into the slide grooves on both sides inside the U-shaped frame.

[0012] Furthermore, the height of the high support plate is higher than that of the low support plate, the bottom of the support is equipped with a horizontal brace, and two vertical plates are welded to the bottom of the support. The two ends of the connecting column are respectively fixed to the two vertical plates of the support.

[0013] Furthermore, the angle between the chute and the vertical line is 39 degrees.

[0014] Furthermore, the sensing end of the proximity switch faces the support rod, and a sensing element is welded to the side of the support rod closest to the proximity switch.

[0015] Furthermore, the lifting cylinder is hinged to the cross brace of the bracket, and the strip ring has strip-shaped perforations, through which the strip ring is sleeved onto the connecting column.

[0016] Furthermore, the feed chute is made of stainless steel.

[0017] This utility model has the following beneficial effects:

[0018] 1. This utility model can lift the chute plate when the side plate of the chain grate machine is tilted up, thereby preventing the chute plate from shifting due to rigid connection.

[0019] 2. The angle between the chute and the vertical line was changed from 42 degrees to 39 degrees. Therefore, the distance between the end of the chute and the chain grate was reduced from 22cm to 15cm. Although the slope is larger, the green balls quickly form a pile on the chain grate. Then the green balls on the chute push the pile forward, thus forming a "material pushing" mode. The powder in the chain grate is reduced, and the ring thickness in the rotary kiln is reduced by 1-1.5m in the same production cycle.

[0020] 3. The conveyor plate is replaced with a stainless steel plate, which has a smooth surface that will not stick to the material. The material is readily available, has good heat dissipation, and is also wear-resistant, thereby extending its service life, ensuring uniform material distribution, and improving heat utilization efficiency.

[0021] 4. After being applied to a 1.2 million-ton rotary kiln pellet production line of a certain factory, the chute plate showed almost no wear after 10 months. The material discharge was smooth and the downtime for handling was reduced from 120 minutes / time to 15 minutes / time. The production efficiency was greatly improved, resulting in a direct economic benefit of more than 2 million yuan.

[0022] 5. When the side plate of the chain grate machine warps up, the lifting cylinder extends to raise one end of the chute plate, increasing the distance between the chute plate and the chain grate machine, leaving sufficient maintenance space, and also preventing the chain grate machine from continuing to collide with the chute plate during shutdown, causing the chute plate to shift or damage the side plate and grate plate of the chain grate machine.

[0023] 6. When the side plate of the chain grate tilts up, the baffle cylinder extends, causing the baffle plate to move down, intercepting the raw balls and preventing them from falling further, thus avoiding accumulation on the chain grate or spillage from the gap between the chain grate and the chute. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model during operation.

[0025] Figure 2 This is a side view structural diagram of the present invention.

[0026] Figure 3 This is a schematic diagram of the structure of the conveyor plate after one end is raised.

[0027] Figure 4 This is a utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0028] Figure 5 This is a utility model Figure 2 Enlarged structural diagram at point B.

[0029] Figure 6 This is a utility model Figure 3 Enlarged structural diagram at point C.

[0030] Figure 7 This is an operational diagram of a material conveyor in existing technology.

[0031] Figure 8 This utility model forms a "material pushing" mode when in use.

[0032] Figure 9 This is due to the displacement of the feed chute in existing technology.

[0033] The components are: 1. bracket; 2. conveyor plate; 3. connecting column; 4. lifting cylinder; 5. strip ring; 6. side baffle; 7. material blocking cylinder; 8. material blocking plate; 9. proximity switch; 10. high support plate; 11. low support plate; 12. slot; 13. cross brace; 14. vertical plate; 15. support rod; 16. sensing element; 17. U-shaped frame; 18. slide groove. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0035] like Figure 1-8 As shown, an automatic reset feeding device for a chain grate machine includes a support 1. The support 1 has two high support plates 10 and two low support plates 11. The low support plates 11 have inclined slots 12. A feeding plate 2 is hinged between the two high support plates 10. Support rods 15 are welded to both sides of the other end of the feeding plate 2. The two support rods 15 are respectively engaged in the slots 12 of the two low support plates 11. A connecting column 3 is fixed at the bottom of the feeding plate 2. A lifting cylinder 4 is hinged on the support 1. The other end of the lifting cylinder 4 is connected to the connecting column 3 through a strip ring 5. A proximity switch 9 is installed on either of the two low support plates 11.

[0036] Side baffles 6 are fixed on both sides of the chute 2, and the side baffles 6 are used to stop the material. A U-shaped frame 17 is welded together from both sides of the U-shaped frame 17. A material-stopping cylinder 7 is installed on the U-shaped frame 17. The output end of the material-stopping cylinder 7 passes through the U-shaped frame 17 and is fixed to a material-stopping plate 8. Both ends of the material-stopping plate 8 are respectively inserted into the sliding grooves 18 on both sides of the U-shaped frame 17. When the chute 2 is lifted, the material-stopping cylinder 7 pushes the material-stopping plate 8 to intercept the green balls and prevent them from spilling.

[0037] The height of the high support plate 10 is higher than that of the low support plate 11. The bottom of the bracket 1 is provided with a horizontal support 13. Two vertical plates 14 are welded to the bottom of the bracket 1. The two ends of the connecting column 3 are respectively fixed on the two vertical plates 14 of the bracket 1.

[0038] The angle between the chute 2 and the vertical line is 39 degrees. Changing the angle from 42 degrees to 39 degrees reduces the distance between the end of the chute 2 and the chain grate from 22cm to 15cm. Although the slope increases, the green balls quickly form a pile on the chain grate. The green balls on the chute 2 then push the pile forward, creating a "material-pushing" pattern. This reduces powder in the chain grate, and the ring thickness in the rotary kiln is reduced by 1-1.5m in the same production cycle.

[0039] The sensing end of the proximity switch 9 faces the support rod 15, and a sensing element 16 is welded to the side of the support rod 15 closest to the proximity switch 9. The proximity switch 9 determines whether it is in normal working condition by sensing the sensing element 16 on the support rod 15. Controlling the length of the sensing element 16 can prevent false readings. If the height to which the support rod 15 is raised is less than the length of the sensing element 16, the proximity switch 9 can still sense the sensing element 16 and will still determine that it is working normally. The sensing element 16 can be arc-shaped to prevent it from bumping into the proximity switch 9 when rotating with the support rod 15.

[0040] The lifting cylinder 4 is hinged to the cross brace 13 of the bracket 1. The strip ring 5 has strip-shaped perforations and is fitted onto the connecting column 3 through these perforations. When the side plate of the chain grate machine tilts up, it will lift the chute 2 to a certain height. The connecting column 3 of the chute 2 will move a certain distance within the strip ring 5, thus providing the chute 2 with a certain lifting space. This prevents the chute 2 from being suddenly lifted before the lifting cylinder 4 has had time to extend, which would then pull the chute 2 and prevent it from being lifted. In this case, the side plate of the chain grate machine would continuously collide with the chute 2, causing it to shift. Therefore, the strip ring 5 has a buffering function. The length of the strip ring 5 is designed according to the actual situation to provide sufficient buffering space.

[0041] The conveyor plate 2 is made of stainless steel. Stainless steel has a smooth surface that prevents material from sticking, is readily available, has good heat dissipation, and is also wear-resistant.

[0042] The working principle of this utility model:

[0043] During operation, the proximity switch 9 is electrically interlocked with the lifting cylinder 4, the baffle cylinder 7, the wide cloth belt, and the chain grate. During normal operation, the support rod 15 is engaged in the slot 12. The proximity switch 9 senses the sensing element 16 on the support rod 15, indicating normal operation. The wide cloth belt slides the green balls onto the chain grate via the chute 2. Because the angle between the chute 2 and the vertical line changes from 42 degrees to 39 degrees, the distance between the end of the chute 2 and the chain grate decreases from 22cm to 15cm. Although the slope increases, the green balls quickly form a pile on the chain grate. Subsequently, the green balls on the chute 2 push the pile forward, thus forming a "material-pushing" mode. This reduces powder in the chain grate, and the ring thickness in the rotary kiln is reduced by 1-1.5m during the same production cycle.

[0044] like Figure 7 As shown, in the prior art, the angle between the chute 2 and the vertical line is 42 degrees, and the distance between the end of the chute 2 and the chain grate is 22cm, thus not forming a "material pushing" mode.

[0045] like Figure 8 As shown, this utility model changes the angle between the chute 2 and the vertical line to 39 degrees, and the distance between the end of the chute 2 and the chain grate is 15cm, forming a "material pushing" mode.

[0046] When the side plate or grate of the chain grate machine tilts up and collides with the conveyor plate 2, the conveyor plate 2 is lifted up, the support rod 15 disengages from the slot 12, and the proximity switch 9 no longer senses the sensing piece 16 on the support rod 15. At this time, it is in an abnormal working state, the interlocked fabric belt and chain grate machine stop running, the baffle cylinder 7 extends, causing the baffle plate 8 to move down to intercept the raw balls, the lifting cylinder 4 extends, lifting one end of the conveyor plate 2, increasing the distance between the conveyor plate 2 and the chain grate machine, leaving sufficient maintenance space, and also preventing the chain grate machine from continuing to collide with the conveyor plate 2 during the shutdown process, causing the conveyor plate 2 to shift or damage the side plate and grate of the chain grate machine.

[0047] After the maintenance is completed, the baffle plate 8 is raised by retracting the baffle cylinder 7, and the support rod 15 of the chute plate 2 is reset into the slot 12 by retracting the lifting cylinder 4.

[0048] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention.

[0049] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.

Claims

1. An automatic reset conveyor device for a chain grate machine, characterized in that, The device includes a support frame with two high support plates and two low support plates. The low support plates have inclined slots. A chute is hinged between the two high support plates. Support rods are welded to both sides of the other end of the chute. The two support rods are respectively engaged in the slots of the two low support plates. A connecting column is fixed to the bottom of the chute. A lifting cylinder is hinged to the support frame. The other end of the lifting cylinder is connected to the connecting column through a strip ring. A proximity switch is installed on either of the two low support plates.

2. The automatic reset conveyor device for the chain grate machine according to claim 1, characterized in that, Side baffles are fixed on both sides of the chute, and a U-shaped frame is welded together on the two side baffles. Slide grooves are provided on both sides inside the U-shaped frame. A material blocking cylinder is installed on the U-shaped frame. The output end of the material blocking cylinder passes through the U-shaped frame and is fixed with a material blocking plate. The two ends of the material blocking plate are respectively inserted into the slide grooves on both sides inside the U-shaped frame.

3. The automatic reset conveyor device for the chain grate machine according to claim 1, characterized in that, The height of the high support plate is higher than that of the low support plate. A horizontal support is provided at the bottom of the support. Two vertical plates are welded to the bottom of the support. The two ends of the connecting column are respectively fixed to the two vertical plates of the support.

4. The automatic reset conveyor device for the chain grate machine according to claim 3, characterized in that, The angle between the chute and the vertical line is 39 degrees.

5. The automatic reset conveyor device for the chain grate machine according to claim 3, characterized in that, The sensing end of the proximity switch faces the support rod, and a sensing element is welded to the side of the support rod closest to the proximity switch.

6. The automatic reset conveyor device for the chain grate machine according to claim 3, characterized in that, The lifting cylinder is hinged to the cross brace of the bracket, and the strip ring has a strip-shaped perforation. The strip ring is sleeved on the connecting column through the strip-shaped perforation.

7. The automatic reset conveyor device for the chain grate machine according to claim 1, characterized in that, The feed chute is made of stainless steel.

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