Feeding anti-blocking device of rod mill, feeding device and rod mill

Abstract

The utility model discloses a feeding anti-blocking device of a rod mill, a feeding device of the rod mill and the rod mill, and relates to the technical field of rod mills, the feeding anti-blocking device of the rod mill comprises a ventilation pipeline, one end of the ventilation pipeline is used for being connected and communicated with a horizontal pipe section of a feeding pipeline, and the other end of the ventilation pipeline is used for introducing gas; the feeding device of the rod mill comprises a feeding pipeline, a drum-shaped feeder and a feeding anti-blocking device of the rod mill, the feeding pipeline comprises a horizontal pipe section, an inclined pipe section and a vertical pipe section, and a coal-water mixture enters a grinding barrel to be ground; the rod mill comprises a grinding cylinder and a feeding device and can be used for processing and grinding a coal-water mixture. According to the feeding anti-blocking device of the rod mill, the feeding device of the rod mill and the rod mill, gas is introduced into the horizontal pipe section of the feeding pipeline, a coal-water mixture is accelerated to enter the grinding barrel, blocking of the feeding device is reduced, normal work of the rod mill is guaranteed, and the field sanitary condition scheme is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bar mill technical field, in particular to a bar mill feeding anti - jam device. BACKGROUND

[0002] The bar mill is a kind of grinder, and the bar mill is mainly composed of grinding cylinder, feeding device and the like, the feeding device includes pulping water pipeline and feeding pipeline, raw coal is sent into the feeding pipeline of bar mill by coal weighing feeder, pulping water enters the feeding pipeline to form coal-water mixture with raw coal, and then enters the grinding cylinder to grind through the horizontal pipe section at the bottom of feeding pipeline;Chinese invention patent application CN117380348A discloses a coal mill feeding port anti - jam device, when the jam occurs in the feeding port, the large particle size coal block in the feeding port is clamped and crushed by clamping block, so that it can enter the coal mill, the application can prevent the jam at the feeding port, but when the internal moisture content of raw coal coal block is high, under the condition that water-coal ratio is certain, the water inlet amount of pulping water pipeline will be low, leading to poor flowability of coal-water mixture, which is accumulated in the horizontal pipe section of feeding device, causing the jam of feeding device, so that the bar mill cannot normally operate, and the raw coal overflow after jamming can pollute the surrounding ground hygiene, and bring additional workload to operating personnel. UTILITY MODEL CONTENT

[0003] The utility model aims at providing a bar mill feeding anti - jam device, feeding device and bar mill to solve the problems existing in the prior art, reduce the jam of feeding device, ensure the normal operation of bar mill and improve the on-site sanitary condition.

[0004] To achieve the above object, the utility model provides the following scheme:

[0005] The utility model provides a bar mill feeding anti - jam device, which comprises a ventilation pipeline, one end of the ventilation pipeline is used to be connected with the ventilation hole formed in the horizontal pipe section blocking plate of feeding pipeline and communicate, the other end of the ventilation pipeline is used to ventilate gas, and the ventilation pipeline ventilates gas to the horizontal pipe section of feeding pipeline through the ventilation hole in the blocking plate.

[0006] Preferably, one end of the ventilation pipeline for ventilating gas is connected with a compressed gas generating device to ventilate compressed air to the horizontal pipe section of feeding pipeline, and a first valve is arranged on the ventilation pipeline.

[0007] Preferably, a branch pipeline is further included, a second valve is arranged on the branch pipeline, one end of the branch pipeline is used for being connected and communicated with the pulping water pipeline, and the other end of the branch pipeline is used for being connected and communicated with the aeration pipeline; the pulping water in the pulping water pipeline can enter the aeration pipeline by closing the first valve and opening the second valve, and then enter the horizontal pipe section of the feeding pipeline.

[0008] The utility model provides a kind of feeding device, including feeding pipeline, drum feeder and the rod mill feeding anti-blocking device of any one described above, the feeding pipeline includes horizontal pipe section, inclined pipe section and vertical pipe section, the vertical pipe section inlet end is connected with feeding port, outlet end is connected with the inlet end of the inclined pipe section and is communicated, the outlet end of the inclined pipe section is connected with the inlet end of the horizontal pipe section and is communicated, the outlet end of the horizontal pipe section is inserted into the drum feeder, and the drum feeder is fixedly connected with grinding cylinder and is communicated.

[0009] Preferably, the pulping water pipeline is connected and communicated with the feeding pipeline between the feeding port and the aeration pipeline access point.

[0010] Preferably, a branch pipeline is connected and communicated with the pipe body between the pulping water access point and the feeding pipeline access point, a front cutting valve is arranged on the pipe body between the pulping water access point and the branch pipeline access point, and an adjusting valve and a rear cutting valve are arranged in sequence along the water flow direction on the pipe body between the branch pipeline access point and the feeding pipeline access point.

[0011] Preferably, the pipe section of the pulping water pipeline close to the feeding pipeline access point is an inclined joint section, and the inclined joint section is inclined downward to one end of the vertical pipe section close to the inclined pipe section.

[0012] Preferably, a pulping water auxiliary pipeline is further included, one end of the pulping water auxiliary pipeline is used for being connected and communicated with the pulping water pipeline between the pulping water access point and the front cutting valve, the other end of the pulping water auxiliary pipeline is used for being connected and communicated with the pulping water pipeline between the rear cutting valve and the feeding pipeline access point, and a pulping water auxiliary valve is arranged on the pulping water auxiliary pipeline.

[0013] Preferably, a filtering device is arranged on the feeding port of the feeding pipeline, to filter large-size coal blocks or impurities in raw coal.

[0014] The utility model provides a kind of rod mill, including grinding cylinder and the feeding device of any one described above. The pipeline for aeration is connected with compressed gas generating device to the end for passing into gas, to pass into compressed air to the horizontal pipe section of the feeding pipeline.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model provides a rod mill feed anti-clogging device, a feed device, and a rod mill. It includes an air pipe, one end of which is connected to and communicates with the horizontal section of the feed pipe, and the other end of which is used to introduce gas. By introducing gas into the horizontal section of the feed pipe, the coal-water mixture is accelerated to enter the grinding cylinder, reducing the clogging of the feed device, ensuring the normal operation of the rod mill, and improving the on-site hygiene.

[0017] Furthermore, the end of the ventilation pipe for introducing gas is connected to a compressed gas generating device, and compressed air is introduced into the horizontal section of the feed pipe to significantly increase the speed at which the coal-water mixture enters the grinding cylinder, thereby reducing the blockage of the feed device.

[0018] Furthermore, the rod mill feed anti-clogging device also includes a branch pipe with a second valve. One end of the branch pipe is connected to the slurry water pipe, and the other end is connected to the ventilation pipe. Closing the first valve and opening the second valve allows the slurry water in the slurry water pipe to enter the ventilation pipe and then enter the horizontal section of the feed pipe. After the horizontal section of the feed pipe is blocked, the slurry water is used to flush the horizontal section of the feed pipe and clear the blockage. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the rod mill feed anti-blocking device provided by this utility model;

[0021] Figure 2 A schematic diagram of the feeding device provided by this utility model;

[0022] Figure 3 This is a schematic diagram of the rod mill provided by this utility model;

[0023] In the diagram: 1. Feeding device; 11. Feeding pipe; 111. Horizontal pipe section; 112. Feed inlet; 113. Filtering device; 114. Inclined pipe section; 115. Vertical pipe section; 12. Pulping water pipe; 121. Front cut-off valve; 122. Regulating valve; 123. Back cut-off valve; 124. Angled connection section; 125. Pulping water branch line pipe; 1251. Pulping water branch line valve; 2. Feeding anti-clogging device; 21. Branch pipe; 211. Second valve; 22. Vent pipe; 221. First valve; 222. Blocking plate; 3. Grinding cylinder; 4. Drum feeder. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] The purpose of this utility model is to provide a rod mill feed anti-clogging device, a feed device, and a rod mill to solve the problems existing in the prior art, reduce the clogging of the feed device, facilitate the unblocking of the feed device after clogging occurs, ensure the normal operation of the rod mill, and improve the on-site hygiene.

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Example 1

[0028] like Figure 1 As shown, this embodiment provides a rod mill feed anti-clogging device 2, including a ventilation pipe 22. One end of the ventilation pipe 22 is connected to and communicates with the blockage plate 222 of the horizontal section 111 of the feed pipe, and the other end of the ventilation pipe 22 is used to introduce gas. By introducing gas into the horizontal section 111 of the feed pipe, the coal-water mixture is accelerated to enter the grinding cylinder 3, reducing the clogging of the feed device 1, ensuring the normal operation of the rod mill, and improving the on-site hygiene.

[0029] In another preferred embodiment of this invention, one end of the horizontal section of the feed pipe is fixedly connected to a blockage plate 222 by bolts. One end of the vent pipe 22 is connected to and communicates with the vent hole on the blockage plate 222, and the other end of the vent pipe 22 is used to introduce gas. The vent pipe introduces gas into the horizontal section 111 of the feed pipe through the vent hole on the blockage plate 222 to prevent the horizontal section 111 of the feed pipe from becoming blocked. After the horizontal section 111 of the feed pipe becomes blocked, the flange of the blockage plate 222 can be removed and the feed pipe 11 can be manually cleared.

[0030] In a preferred embodiment of this example, one end of the ventilation pipe 22 is used to connect and communicate with the horizontal section 111 of the feed pipe, and the other end is used to access compressed air. A first valve 221 is provided on the pipe body of the ventilation pipe 22 located between the gas access point and the access point of the pulping water branch pipe 21, which is used to control the opening and closing of the gas supply. Opening the first valve 221 introduces compressed air into the horizontal section 111 of the feed pipe, so as to significantly increase the speed at which the coal-water mixture enters the grinding cylinder 3, and further reduce the blockage of the feed device.

[0031] In another preferred embodiment of this invention, the rod mill feed anti-blocking device 2 further includes a branch pipe 21, on which a second valve 211 is provided. One end of the branch pipe 21 is used to connect and communicate with the pulping water pipe 12, and the other end is used to connect and communicate with the ventilation pipe 22. After the horizontal section 111 of the feed pipe is blocked, the first valve 221 is closed and the second valve 211 is opened to allow the pulping water in the pulping water pipe 12 to enter the ventilation pipe 22, thereby flushing and clearing the horizontal section 111 of the feed pipe.

[0032] Example 2

[0033] like Figure 2 As shown, this embodiment provides a feeding device 1, including a feeding pipe 11, a drum feeder 4, and a rod mill feeding anti-clogging device 2 as described in Embodiment 1. The feeding pipe 11 includes a horizontal pipe section 111, an inclined pipe section 114, and a vertical pipe section 115. The inlet end of the vertical pipe section 115 is connected to the inlet, and the outlet end is connected and communicates with the inlet end of the inclined pipe section 114. The outlet end of the inclined pipe section 114 is connected and communicates with the inlet end of the horizontal pipe section 111. The outlet end of the horizontal pipe section 111 is inserted into the drum feeder 4. The drum feeder 4 is fixedly connected and communicates with the grinding cylinder 3, and is used to transport the coal-water mixture fed into the feeding pipe 11 to the grinding cylinder 3 for processing and grinding. This feeding device can reduce the clogging of the feeding device and facilitate the unblocking of the feeding device after clogging occurs, ensuring the normal operation of the rod mill and improving the on-site hygiene.

[0034] In another preferred embodiment of this embodiment, the feeding device 1 further includes the pulping water pipe 12, which is connected to and communicates with the feeding pipe 11 located between the feed inlet 112 and the connection point of the ventilation pipe 22. It is used to transport pulping water into the feeding pipe 11 and control the amount of pulping water to achieve the preset water-coal ratio, thereby ensuring the preparation of qualified water-coal slurry.

[0035] In another preferred embodiment of this invention, a pre-cut valve 121 is provided on the pipe body of the slurry water pipeline 12 located between the slurry water inlet point and the branch pipeline 21 inlet point to control the opening and closing of the slurry water. A regulating valve 122 and a post-cut valve 123 are sequentially provided on the pipe body of the slurry water pipeline 12 located between the branch pipeline 21 inlet point and the feed pipeline 11 inlet point along the direction of water flow. The regulating valve 122 can achieve precise control of the amount of slurry water so that the coal-water mixture reaches the set water-coal ratio. The post-cut valve 123 can control the slurry water to enter the feed pipeline 11.

[0036] In another preferred embodiment of this invention, the section of the pulping water pipe 12 near the connection point with the feed pipe 11 is a slanted section 124. The slanted section 124 is inclined downwards and connects to one end of the vertical section 115 of the feed pipe near the slanted section 114, in order to increase the impact force of the pulping water entering the feed pipe 11. Preferably, the angle between the slanted section 124 and the vertical section 115 of the feed pipe is 45°, and the angle between the slanted section 114 of the feed pipe and the vertical section of the feed pipe is 45°, so as to achieve a transition from the horizontal pulping water pipe to the feed pipe, reduce the impact of the pulping water on the pipe wall when entering the feed pipe 11, and reduce the hydraulic loss of the pulping water.

[0037] In another preferred embodiment of this invention, the feeding device 1 further includes a pulping water sub-line pipe 125. One end of the pulping water sub-line pipe 125 is used to connect and communicate with the pulping water pipeline 12 between the pulping water inlet point and the pre-cut valve 121. The other end of the pulping water sub-line pipe 125 is used to connect and communicate with the pulping water pipeline 12 between the post-cut valve 123 and the inlet pipe 11 inlet point. A pulping water sub-line valve 1251 is provided on the pulping water sub-line pipe 125. When the pulping water pipeline 12 fails, the pulping water sub-line pipe 125 is activated to supply pulping water.

[0038] In another preferred embodiment of this example, the second valve 211 installed on the branch pipeline 21, the pulping water branch line valve 1251 installed on the pulping water branch line pipeline 125, the first valve 221 installed on the venting pipeline 22, and the front cut-off valve 121, regulating valve 122, and rear cut-off valve 123 installed on the pulping water pipeline 12 can all be manual or electric valves.

[0039] In another preferred embodiment of this invention, the feed inlet 112 of the feed pipe 11 is equipped with a filter device 113 for filtering out large coal particles with a diameter greater than 10 cm or debris such as wood chips, rags, and plastics from the raw coal.

[0040] In another preferred embodiment of this invention, the filter device 113 includes a grate plate, which is fixedly installed at the inlet 112 of the feed pipe 11 and covers the inlet 112.

[0041] Example 3

[0042] like Figure 3 As shown, this utility model also provides a rod mill, including a grinding cylinder 3 and a feeding device 1 as in this embodiment 2. This rod mill can reduce the clogging of the feeding device and facilitate the unblocking of the feeding device after clogging occurs, ensuring the normal operation of the rod mill and improving the on-site hygiene.

[0043] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A rod mill feed anti-clogging device, characterized in that, It includes a venting pipe, one end of which is used to connect and communicate with a venting hole opened on the horizontal pipe section of the feed pipe, and the other end of which is used to introduce gas. The venting pipe introduces gas into the horizontal pipe section of the feed pipe through the venting hole on the block plate.

2. The rod mill feed anti-blocking device according to claim 1, characterized in that, The ventilation pipe is connected to a compressed gas generating device at one end for introducing gas, so as to introduce compressed air into the horizontal section of the feed pipe. A first valve is provided on the ventilation pipe.

3. The rod mill feed anti-blocking device according to claim 2, characterized in that, It also includes a branch pipe, which is equipped with a second valve. One end of the branch pipe is used to connect and communicate with the pulping water pipe, and the other end is used to connect and communicate with the ventilation pipe. Closing the first valve and opening the second valve allows the pulping water in the pulping water pipe to enter the ventilation pipe and then enter the horizontal section of the feed pipe.

4. A feeding device, characterized in that, The device includes a feed pipe, a drum feeder, and a rod mill feed anti-clogging device as described in any one of claims 1 to 3. The feed pipe includes a horizontal pipe section, an inclined pipe section, and a vertical pipe section. The feed end of the vertical pipe section is connected to the feed inlet, and the discharge end is connected to and communicates with the feed end of the inclined pipe section. The discharge end of the inclined pipe section is connected to and communicates with the feed end of the horizontal pipe section. The discharge end of the horizontal pipe section is inserted into the drum feeder, and the drum feeder is fixedly connected to and communicates with the grinding cylinder.

5. The feeding device according to claim 4, characterized in that, It also includes a pulping water pipe, which is used to connect and communicate with the feed pipe located between the feed inlet and the air vent pipe access point.

6. The feeding device according to claim 5, characterized in that, The pulping water pipeline is connected to and connected to a branch pipeline on the pipe body between the pulping water inlet point and the feed pipe inlet point. A pre-cut valve is installed on the pipe body between the pulping water inlet point and the branch pipeline inlet point. A regulating valve and a post-cut valve are sequentially installed on the pipe body between the branch pipeline inlet point and the feed pipe inlet point along the direction of water flow.

7. The feeding device according to claim 5, characterized in that, The section of the pulping water pipe near the inlet pipe connection point is an oblique section, which is obliquely connected downwards to one end of the vertical pipe section near the oblique section.

8. The feeding device according to claim 6, characterized in that, It also includes a pulping water sub-line pipeline, one end of which is used to connect and communicate with the pulping water pipeline between the pulping water inlet point and the front cut valve, and the other end of which is used to connect and communicate with the pulping water pipeline between the rear cut valve and the feed pipeline inlet point. A pulping water sub-line valve is provided on the pulping water sub-line pipeline.

9. The feeding device according to claim 4, characterized in that, The feed inlet of the feed pipe is equipped with a filter device for filtering out large coal particles or impurities in the raw coal.

10. A rod mill, characterized in that, It includes a grinding cylinder and a feeding device as described in any one of claims 4 to 9.

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