Material pushing device

Abstract

The utility model relates to a material pushing device which comprises a driving mechanism, a pushing rod and a material pushing plate. Wherein the driving mechanism is installed on the feeding spiral cylinder and comprises a driving piece and a transmission piece, the transmission piece is connected to the power output end of the driving piece, and threads are arranged on the transmission piece; the pushing rod penetrates through the driving mechanism, one end of the pushing rod is arranged in the gap, and threads are arranged on the outer wall of the pushing rod and meshed with the threads of the transmission part so that radial rotation of the transmission part driven by the driving part can be converted into axial telescopic movement of the pushing rod. And the material pushing plate is arranged in the gap and is connected with the push rod. The technical problem that dust in the exhaust channel of the coal slime roller drying system is easy to accumulate is solved, the pushing device is installed above the feeding spiral cylinder, the pushing rod is controlled by the driving mechanism to drive the pushing plate to axially move in the exhaust channel, the effect of automatically cleaning the accumulated dust in the exhaust channel can be achieved, and the service life of the coal slime roller drying system is prolonged. The cleaning efficiency is greatly improved, and the labor cost of dust cleaning is effectively reduced.

Description

Technical Field

[0001] This utility model belongs to the field of material transportation technology, and in particular relates to a material pushing device. Background Technology

[0002] In the coal processing industry, the rotary drum drying of coal slime is a crucial step. Existing technologies typically include at least a feed screw conveyor and a dryer. The feed screw conveyor transports the coal slime material to the dryer and includes at least a feed screw cylinder and a sealing cylinder. The feed screw cylinder contains a feed screw to transport the coal slime material, and its outlet end is connected to the dryer's inlet. The sealing cylinder, with a diameter larger than that of the feed screw cylinder, is fitted over the outlet end of the feed screw cylinder. One end is connected to the cylinder wall of the feed screw cylinder, and the other end is connected to the dryer. A tubular gap is formed between the sealing cylinder and the feed screw cylinder, serving as an exhaust channel for the water vapor evaporated in the dryer. Simultaneously, a through-hole communicating with the outside is provided on the wall of the sealing cylinder, serving as the exhaust outlet for this exhaust channel.

[0003] During the rotary drum drying process, the moisture evaporated from the coal slime needs to be extracted by a fan and discharged through the exhaust channel between the sealed cylinder and the feed screw drum. However, in actual use, the fan also extracts some dust from inside the dryer while extracting water vapor. If the dust accumulates in the exhaust channel and is not cleaned in time, it may cause blockage of the air outlet, thereby affecting the drying efficiency and normal operation of the equipment. Utility Model Content

[0004] The purpose of this utility model is to solve one of the above-mentioned technical problems by providing a pushing device that, through the cooperation of a drive mechanism, a pushing rod and a pushing plate, automatically cleans the dust accumulated in the exhaust channel between the sealing cylinder and the feeding screw cylinder.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A pushing device is installed on a screw conveyor, the screw conveyor including a feed screw cylinder and a sealing cylinder, the sealing cylinder being sleeved at the outlet end of the feed screw cylinder, forming a gap between the sealing cylinder and the feed screw cylinder, the pushing device comprising:

[0007] The drive mechanism is mounted on the feed screw drum. The drive mechanism includes a drive component and a transmission component. The transmission component is connected to the power output end of the drive component and has threads.

[0008] The push rod passes through the drive mechanism, with one end positioned within the gap. The outer wall of the push rod is threaded, and the thread on the outer wall of the push rod meshes with the thread of the transmission component to convert the radial rotation of the transmission component under the drive of the drive component into the axial extension and retraction motion of the push rod.

[0009] A pushing plate is arranged in the gap and is connected with the pushing rod.

[0010] In some embodiments of the utility model, the end face of the pushing plate close to the sealing cylinder and the end face of the pushing plate close to the feeding spiral cylinder are both arc faces, and the radii are matched with the radii of the cylinder wall of the sealing cylinder and the cylinder wall of the feeding spiral cylinder respectively.

[0011] In some embodiments of the utility model, the pushing plate comprises a rigid pushing part and an elastic pushing part; the rigid pushing part is connected with the pushing rod, the elastic pushing part is connected with the rigid pushing part, and the end face of the elastic pushing part close to the sealing cylinder and the end face of the elastic pushing part close to the feeding spiral cylinder are connected with the cylinder wall of the sealing cylinder and the cylinder wall of the feeding spiral cylinder respectively.

[0012] In some embodiments of the utility model, the feeding spiral cylinder is provided with a guide part protruding from the cylinder wall, the end face of the pushing plate close to the feeding spiral cylinder is provided with a matching part matched with the shape of the guide part, and the pushing plate is connected with the guide part through the matching part, so that the pushing plate can slide along the extension direction of the guide part.

[0013] In some embodiments of the utility model, a pin shaft is further included; a connecting part protruding from the plate face is formed on one side of the pushing plate close to the pushing rod, the connecting part is provided with a first pin shaft hole; the end of the pushing rod is provided with a second pin shaft hole; and the pin shaft penetrates through the first pin shaft hole and the second pin shaft hole to connect the pushing rod and the pushing plate.

[0014] In some embodiments of the utility model, the threads on the outer wall of the pushing rod and the threads of the transmission part are both trapezoidal threads.

[0015] In some embodiments of the utility model, the length of the pushing rod is greater than the horizontal distance between the end of the feeding spiral cylinder close to the dryer and the driving mechanism.

[0016] In some embodiments of the utility model, the feeding spiral cylinder is provided with a feeding port protruding from the cylinder wall thereof; a rod sleeve is sleeved on the end of the pushing rod away from the pushing plate, the rod sleeve transversely passes through the feeding port, and the rod sleeve is fixedly connected with the side wall of the feeding port.

[0017] In some embodiments of the utility model, the part of the rod sleeve above the feeding port is provided with a triangular protruding part.

[0018] In some embodiments of the utility model, one end of the sealing cylinder close to the driving mechanism is fixedly provided with an end cover, and the sealing cylinder is connected with the feeding spiral cylinder through the end cover.

[0019] The end of the pushing rod close to the pushing plate is sleeved with a telescopic dustproof sleeve, and the two ends of the dustproof sleeve are connected with the end cover and the pushing plate respectively.

[0020] The utility model has the advantages of:

[0021] 1. The utility model discloses a pusher device is installed above the feeding screw cylinder, through the drive mechanism control push rod drives the axial motion of pusher plate in the exhaust passage, can reach the effect of automatic cleaning of the dust accumulation in the exhaust passage in time, greatly improves the cleaning efficiency, effectively reduces the artificial cost of cleaning;

[0022] 2. The pusher plate is composed of a rigid pusher part and an elastic pusher part, wherein the rigid pusher part ensures the overall strength of the pusher plate, and the elastic pusher part ensures the close fit of the pusher plate with the sealing cylinder and the wall of the feeding screw cylinder, thereby ensuring the cleaning effect of the exhaust passage, and the elastic pusher part can also avoid the wear of the pusher plate on the sealing cylinder and the wall of the feeding screw cylinder, improving the durability of the coal slime drying equipment. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, specific embodiments of the utility model will be described in detail below with reference to the drawings, and other drawings can also be obtained by those skilled in the art without creative labor on the premise of not paying creative labor.

[0024] Figure 1 It is a structural schematic diagram of the pusher device;

[0025] Figure 2 It is a schematic diagram of the cooperation relationship between the drive mechanism and the push rod;

[0026] Figure 3 It is Figure 1 the sectional view of B-B;

[0027] Figure 4 It is a structural schematic diagram of the pusher device in the extended state;

[0028] Figure 5 It is a top view of the pusher device;

[0029] Figure 6 It is Figure 5 the sectional view of C-C;

[0030] Figure 7 It is a structural schematic diagram of the pusher plate;

[0031] Figure 8 It is a side view of the pusher plate;

[0032] Figure 9 It is a structural diagram of the pusher device, the screw conveyor and the dryer;

[0033] Among them, the sign is:

[0034] 1, drive mechanism;11, shell;12, mandrel;13, transmission part;

[0035] 2. Pushing rod;

[0036] 3. Pushing plate; 31. Rigid pushing part; 311. Connecting part; 32. Elastic pushing part; 321. Matching part; 33. Pin shaft;

[0037] 4. Rod sleeve; 41. Protruding part;

[0038] 5. Dustproof sleeve;

[0039] 6. Feeding spiral cylinder; 61. Guiding part; 62. Feeding port;

[0040] 7. Sealing cylinder; 71. End cover;

[0041] 8. Spiral conveyor;

[0042] 9. Dryer. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is described and explained below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application. Based on the examples provided in the present application, all other examples obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0044] Obviously, the drawings in the following description are only some examples or embodiments of the present application, and for those of ordinary skill in the art, the present application can also be applied to other similar scenarios without making creative efforts based on these drawings.

[0045] The terms "first", "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features.

[0046] Unless otherwise defined, the technical terms or scientific terms involved in the present application should be understood as the usual meaning by those of ordinary skill in the art to which the present application belongs. The terms "one", "a", "an", and similar words involved in the present application do not represent quantity limitation, but can represent singular or plural. The terms "include", "contain", "have" and any variations thereof involved in the present application are intended to cover non-exclusive inclusion.

[0047] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0048] To better explain the solution of this utility model, the structure of the existing coal slime drum drying system will be described first.

[0049] In existing technology, a coal slime rotary drum drying system includes at least a feed screw conveyor and a dryer. (See attached diagram) Figure 9 As shown, the feed screw conveyor is used to transport coal slime material to the dryer for drying, and includes a feed screw drum and a sealing cylinder. The feed screw drum contains a feed screw to transport the coal slime material, and its outlet end is connected to the dryer's inlet. The sealing cylinder has a diameter larger than that of the feed screw drum and is fitted onto the outlet end of the feed screw drum. One end is connected to the cylinder wall of the feed screw drum, and the other end is connected to the dryer. A tubular gap is formed between the sealing cylinder and the feed screw drum, serving as an exhaust channel for the evaporated water vapor in the dryer. Simultaneously, a through hole is opened on the cylinder wall of the sealing cylinder to communicate with the outside, serving as the dryer's exhaust outlet.

[0050] During the rotary drum drying process, the moisture evaporated from the coal slime needs to be extracted by a fan and discharged through the exhaust channel between the sealed cylinder and the feed screw drum. However, while the fan extracts the moisture, it also extracts some dust. If the dust accumulates in the exhaust channel and is not cleaned in time, it may cause blockage of the air outlet, thereby affecting the drying efficiency and normal operation of the equipment.

[0051] The technical solution of this utility model will be described in detail below with reference to specific embodiments and the accompanying drawings.

[0052] As attached Figure 1 - Appendix Figure 9 As shown in an illustrative embodiment of the feeding device of this utility model, the feeding device is installed on the feed screw drum 6 of the screw conveyor 8, and is used to push the dust accumulated in the exhaust channel formed between the sealing cylinder 7 and the feed screw drum 6 back into the dryer 9. The feeding device includes a drive mechanism 1, a push rod 2, and a push rod 3.

[0053] Specifically, the drive mechanism 1 is an electric worm gear transmission mechanism, which is installed above the feed screw drum 6 and arranged with the sealing cylinder 7.

[0054] The drive mechanism 1 includes at least a housing 11, a drive component, and a transmission component 13. The housing 11 is fixedly connected to the wall of the feed screw drum 6. The drive component and transmission component 13 are disposed within the housing 11. The drive component is specifically an electric motor, located inside the housing 11 and therefore not shown in the figure. The transmission component 13 is specifically a turbine, connected to the output shaft of the electric motor via a spindle 12, to rotate radially under the drive of the electric motor. The outer wall of the turbine is provided with a trapezoidal thread. In this embodiment, the electric motor in the electric worm gear transmission mechanism is configured to operate intermittently, automatically driving the push rod 2 and the push plate 3 to complete one push-pull action at predetermined intervals.

[0055] The push rod 2 is positioned above the feed screw cylinder 6 and extends axially along the feed screw cylinder 6. Its rod body penetrates the housing 11 of the drive mechanism 1, and one end is located within the exhaust channel between the sealing cylinder 7 and the feed screw cylinder 6. (See attached...) Figure 2 As shown, the push rod 2 is specifically a trapezoidal lead screw with trapezoidal threads on its outer wall. The trapezoidal threads on the outer wall of the push rod 2 mesh with the trapezoidal threads of the transmission component 13 to convert the radial rotation of the transmission component 13 under the drive of the drive component into the axial extension and retraction motion of the push rod 2. In this embodiment, the length of the push rod 2 is greater than the length of the exhaust channel. Specifically, the length of the push rod 2 is greater than the horizontal distance between the end of the feed screw 6 near the dryer 9 and the drive mechanism 1, to ensure that the drive mechanism 1 can drive the push rod 2 to move within the exhaust channel and push the dust in the exhaust channel back into the dryer 9.

[0056] The pusher plate 3 is located in the exhaust channel between the sealing cylinder 7 and the feeding screw cylinder 6. It is fixedly connected to the push rod so as to push the dust accumulated in the exhaust channel back into the dryer 9 during the axial movement of the push rod 2.

[0057] This technical solution solves the problem of dust accumulation in the exhaust channel of the coal slime drum drying system. A pushing device is installed above the feeding screw drum 6. The pushing rod 2 is controlled by the drive mechanism 1 to drive the pushing plate 3 to move axially in the exhaust channel, which can achieve the effect of automatically cleaning the dust accumulated in the exhaust channel at regular intervals, greatly improving the cleaning efficiency and effectively reducing the labor cost of dust cleaning.

[0058] To ensure the pushing effect of the pusher plate 3, some embodiments of this utility model, as shown in the appendix... Figure 6 -Appendix Figure 8 As shown, the shape of the pusher plate 3 matches the shape of the exhaust channel. Specifically, the end face of the pusher plate 3 near the sealing cylinder 7 and the end face near the feeding screw cylinder 6 are both arc-shaped, and their curvature matches the curvature of the cylinder wall of the sealing cylinder 7 and the feeding screw cylinder 6, respectively.

[0059] To further ensure the pushing effect of the pusher plate 3, in some embodiments of this utility model, as shown in the appendix...Figure 6 -attached Figure 8 As shown in the drawings, the pushing plate 3 comprises a rigid pushing part 31 and an elastic pushing part 32. The rigid pushing part 31 is connected with the pushing rod 2, and the elastic pushing part 32 is connected with the elastic pushing part 32 through a screw. Specifically, the rigid pushing part 31 is composed of a metal material, for example, a steel metal material; and the elastic pushing part 32 is composed of a rubber material, for example, a fluororubber material. The elastic pushing part 32 is fixed to the periphery of the rigid pushing part 31, or the elastic pushing part 32 is fixed to the side of the rigid pushing part 31 away from the pushing rod 2. The end face of the elastic pushing part 32 close to the end face of the sealing cylinder 7 and the end face close to the feeding spiral cylinder 6 are respectively connected with the cylinder wall of the sealing cylinder 7 and the cylinder wall of the feeding spiral cylinder 6. The rigid pushing part 31 is used to guarantee the overall structural strength of the pushing plate 3, so as to improve the cleaning effect of the pushing device under the condition that there is more dust accumulation. The elastic pushing part 32 is connected with the cylinder wall of the sealing cylinder 7 and the cylinder wall of the feeding spiral cylinder 6, which can ensure the close contact between the pushing plate 3 and the cylinder wall, further improve the cleaning effect, and reduce the damage to the cylinder wall, thereby enhancing the durability of the coal slime drying equipment.

[0060] In order to guide the sliding cleaning process of the pushing plate 3 in the exhaust channel, in some embodiments of the utility model, a guide part 61 protruding from the cylinder wall of the feeding spiral cylinder 6 is arranged above the cylinder wall of the feeding spiral cylinder 6 along the extension direction of the exhaust channel. The end face of the pushing plate 3 close to the feeding spiral cylinder 6 is provided with a matching part 321 corresponding to the guide part 61. The matching part 321 is matched with the guide part 61 to enable the pushing plate 3 to slide along the extension direction of the guide part 61. Specifically, in this embodiment, as shown in the drawings, the guide part 61 is a rectangular guide rail protruding from the cylinder wall of the feeding spiral cylinder 6, and the matching part 321 is a rectangular groove matched with the size of the rectangular guide rail. Figure 4 -attached Figure 5 As shown in the drawings, the guide part 61 is a rectangular guide rail protruding from the cylinder wall of the feeding spiral cylinder 6, and the matching part 321 is a rectangular groove matched with the size of the rectangular guide rail.

[0061] In order to realize the connection between the pushing plate 3 and the pushing rod 2, in some embodiments of the utility model, a pin shaft 33 is further included. A connecting part 311 protruding from the plate surface is formed on the side of the pushing plate 3 close to the pushing rod 2. The connecting part 311 comprises two oppositely arranged triangular plate structures, and a gap is formed between the two triangular plate structures. The width of the gap is the same as the diameter of the pushing rod 2. First pin shaft holes are formed in the two triangular plate structures. A second pin shaft hole is formed in the end of the pushing rod 2, which is inserted into the gap between the two triangular plate structures. The second pin shaft hole corresponds to the positions of the two first pin shaft holes. The pin shaft 33 penetrates the first pin shaft hole and the second pin shaft hole to connect the pushing rod 2 and the pushing plate 3.

[0062] The feeding screw cylinder 6 is further provided with a feeding port 62 which is open upward and protrudes from the wall of the cylinder, as shown in Fig. 2. Figure 1 -Appendix Figure 2 In some embodiments of the present application, the driving mechanism 1 is installed between the feeding port 62 and the sealing cylinder 7, the pushing rod 2 is sleeved with a rod sleeve 4 at the end away from the pushing plate 3, the rod sleeve 4 transversely penetrates the outer wall of the feeding port 62 and is fixedly connected with the outer wall of the feeding port 62. The pushing rod 2 can axially slide in the rod sleeve 4, which can prevent the protruding outer wall of the feeding port 62 from interfering with the axial movement of the pushing rod and also can be used to protect the pushing rod 2 from being polluted by the coal slime when the screw conveyor 8 is fed by the feeding port 62.

[0063] In order to reduce the impact of the coal slime on the rod sleeve 4 when the coal slime enters the feeding screw cylinder 6 through the feeding port 62, in some embodiments of the present application, as shown in Fig. 3, the part of the rod sleeve 4 above the feeding port 62 is provided with a triangular protruding part 41 which faces upward. -Appendix Figure 2 -Appendix Figure 3 As shown in Fig. 3, the triangular protruding part 41 can not only protect the rod sleeve 4 from being impacted but also can crush the coal slime.

[0064] In some embodiments of the present application, the sealing cylinder 7 is fixedly provided with an end cover 71 at the end close to the driving mechanism 1, and the sealing cylinder 7 is connected with the screw feeding cylinder through the end cover 71. The end of the pushing rod 2 close to the pushing plate 3 is sleeved with an extendable dustproof sleeve 5 which is made of rubber material to ensure its extendability, and the two ends of the dustproof sleeve 5 are connected with the end cover 71 and the pushing plate 3 respectively, and the dustproof sleeve 5 is stretched and compressed along with the axial movement of the pushing plate in the exhaust passage to protect the part of the pushing rod 2 in the exhaust passage from being polluted by the dust.

[0065] Finally, it should be noted that: the embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts of each embodiment can be referred to.

[0066] The above embodiments are only used to illustrate the technical solutions of the present application but not to limit it. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the specific embodiments of the present application can be modified or some technical features can be replaced by equivalent ones without departing from the spirit of the technical solutions of the present application, and all of them should be covered in the technical solution range of the present application.

Claims

1. A pusher device, characterized in that, The application is installed on a screw conveyor, which comprises a feeding screw cylinder and a sealing cylinder, the sealing cylinder is sleeved on the outlet end of the feeding screw cylinder, a gap is formed between the feeding screw cylinder and the sealing cylinder, and the pushing device comprises: a driving mechanism installed on the feeding screw cylinder, the driving mechanism comprises a driving part and a transmission part, the transmission part is connected to the power output end of the driving part, and the transmission part is provided with threads; a pushing rod penetrating through the driving mechanism and provided with one end in the gap, the outer wall of the pushing rod is provided with threads, and the threads of the outer wall of the pushing rod are engaged with the threads of the transmission part to convert the radial rotation of the transmission part under the driving of the driving part into the axial extension and contraction movement of the pushing rod; a pushing plate provided in the gap and connected with the pushing rod.

2. The pusher device of claim 1, wherein, The end face of the pushing plate close to the sealing cylinder and the end face close to the feeding screw cylinder are both arc faces, and the arc degrees are matched with the arc degrees of the cylinder walls of the sealing cylinder and the feeding screw cylinder respectively.

3. A pushing device according to claim 1 or 2, characterized in that The pushing plate comprises a rigid pushing part and an elastic pushing part, the rigid pushing part is connected with the pushing rod, the elastic pushing part is connected with the rigid pushing part, and the end face of the elastic pushing part close to the sealing cylinder and the end face close to the feeding screw cylinder are connected with the cylinder wall of the sealing cylinder and the cylinder wall of the feeding screw cylinder respectively.

4. A pushing device according to claim 1 or 2, characterized in that The feeding screw cylinder is provided with a guide part protruding from the cylinder wall, the end face of the pushing plate close to the feeding screw cylinder is provided with a matching part matched with the shape of the guide part, and the pushing plate is connected with the guide part through the matching part to enable the pushing plate to slide along the extension direction of the guide part.

5. The pusher device of claim 1, wherein, Further comprising a pin shaft, one side of the pushing plate close to the pushing rod is formed with a connecting part protruding from the plate face of the pushing plate, the connecting part is provided with a first pin shaft hole, the end of the pushing rod is provided with a second pin shaft hole, and the pin shaft penetrates through the first pin shaft hole and the second pin shaft hole to connect the pushing rod and the pushing plate.

6. The pusher device of claim 1, wherein, The threads of the outer wall of the pushing rod and the threads of the transmission part are both trapezoidal threads.

7. The pusher device of claim 1, wherein, The outlet end of the feeding screw cylinder is provided with a dryer; The length of the pushing rod is greater than the horizontal distance between the end of the feeding screw cylinder close to the dryer and the driving mechanism.

8. The pusher device of claim 1, wherein, The feeding screw cylinder is provided with a feeding port protruding from the cylinder wall thereof, the end of the pushing rod away from the pushing plate is sleeved with a rod sleeve, the rod sleeve transversely passes through the feeding port and is fixedly connected with the side wall of the feeding port.

9. The pusher device of claim 8, wherein, The part of the rod sleeve above the feeding port is provided with a triangular protruding part.

10. The pusher device of claim 1, wherein, The end of the sealing cylinder close to the driving mechanism is fixed with an end cover, and the sealing cylinder is connected with the feeding screw cylinder through the end cover; The end of the pushing rod close to the pushing plate is sleeved with a telescopic dustproof sleeve, and the two ends of the dustproof sleeve are connected with the end cover and the pushing plate respectively.

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