Feeding coal blockage cleaning device for hammer crusher and hammer crusher

Abstract

The utility model discloses a feeding coal blockage cleaning device for a hammer crusher and the hammer crusher, the feeding coal blockage cleaning device comprises a mounting seat, a movable push plate assembly and a driving mechanism, the movable push plate assembly is mounted at the back of a feeding port of the hammer crusher through the mounting seat, and the driving mechanism is mounted on the mounting seat. The movable push plate assembly at least comprises an arc-shaped material receiving plate, the driving mechanism is used for driving the arc-shaped material receiving plate to do telescopic motion, and when coal samples adhere to the arc-shaped material receiving plate, the driving mechanism drives the movable push plate assembly to stretch out to be close to a hammer head of the crusher, so that the adhered coal samples are hit and scraped down through the hammer head of the crusher. The cleaning device has the advantages of simple structure, good cleaning effect, high operation stability and reliability and the like.

Description

Technical Field

[0001] The utility model mainly relates to the field of crushing equipment, in particular to a feeding coal-blocking cleaning device for a hammer crusher and a hammer crusher. Background Technique

[0002] The traditional hammer crusher consists of a feeding port, a crushing chamber, a rotor and a hammer head assembly, a sieve plate, and a discharging port. Its working principle is that the rotor and the hammer head impact, strike, shear, and crush the materials poured into the crushing chamber by rotating at high speed. The materials passing through the sieve plate are output from the discharging port to complete the process of primary crushing. In the field of coal and mineral sampling, when the poured materials have high viscosity and large moisture content, a large amount of samples will adhere to the impact surface of the materials near the feeding port of the crushing chamber. Excessive accumulation will block the feeding port.

[0003] In the prior art, some practitioners have designed automatic cleaning devices. For example, the automatic cleaning device for a ring hammer crusher and the ring hammer crusher disclosed in the patent application No. CN201420627917.X. In this solution, a cleaning rod is provided in front of the material receiving disc, and there is a certain width gap between the cleaning rod and the material receiving disc. The function of the cleaning rod is to scrape the coal samples adhered to the front surface (i.e., the material receiving surface) of the material receiving disc and drop them into the crushing chamber. However, it is found in actual application that there are still problems in the above solution: relative rotational movement is required between the cleaning rod and the front surface of the material receiving disc to scrape off the coal samples adhered to the material receiving disc. The shape of the cleaning rod is semi-circular or triangular, and the surface of the cleaning rod opposite to the material receiving disc is parallel to the front surface of the material receiving disc, with a large contact area with the coal samples. It is easy to form a wedge-shaped structure during the process of scraping the coal samples, and the scraping resistance is extremely large. Moreover, the larger the contact area, the greater the scraping resistance, which may cause the automatic cleaning device to get stuck or trip.

[0004] How to prevent blockage, coal sample accumulation and residue at the feeding part of the crusher, and ensure the stable and reliable operation of the cleaning device without problems of getting stuck or tripping is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Utility Model

[0005] Aiming at the technical problems existing in the prior art, the utility model provides a feeding coal-blocking cleaning device for a hammer crusher and a hammer crusher, which have simple structures, good cleaning effects, high operating stability and reliability.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A coal-blocking cleaning device for a hammer crusher, comprising a mounting seat, a movable push plate assembly and a driving mechanism. The movable push plate assembly is mounted on the back of the feeding port of the hammer crusher through the mounting seat. The movable push plate assembly includes at least one arc-shaped coal-receiving plate. The driving mechanism is used to drive the arc-shaped coal-receiving plate to perform telescopic movement. When a coal sample adheres to the arc-shaped coal-receiving plate, the driving mechanism drives the movable push plate assembly to extend and approach the hammer of the crusher, so as to strike and scrape off the adhered coal sample by the hammer of the crusher.

[0008] As a further improvement of the present utility model: The movable push plate assembly further includes a top baffle and two side plates. The top end of the arc-shaped coal-receiving plate is connected to the top baffle. The bottom end of the arc-shaped coal-receiving plate is connected to the mounting seat through a rotating shaft. The two sides of the arc-shaped coal-receiving plate are respectively connected to the two side plates.

[0009] As a further improvement of the present utility model: The driving mechanism includes a fixed seat, a driving component, a driving shaft, an eccentric wheel, a connecting rod and a connecting shaft. The driving component is mounted on the mounting seat through the fixed seat. The connecting shaft is connected to the movable push plate assembly. The eccentric wheel is connected to the connecting shaft through the connecting rod. The driving component drives the eccentric wheel to rotate through the driving shaft. The rotation of the eccentric wheel drives the connecting rod and the connecting shaft to move.

[0010] As a further improvement of the present utility model: The driving mechanism includes a fixed seat, a driving component, a driving shaft, a gear assembly, a slider mounting seat, a rack, a linear guide rail, a connecting rod and a connecting shaft. The driving component is mounted on the mounting seat through the fixed seat. The connecting shaft is connected to the movable push plate assembly. The gear assembly is mounted on the driving shaft. The slider mounting seat is mounted on the fixed seat. The rack is connected to the linear guide rail. The linear guide rail is mounted on the slider mounting seat through a slider. A connecting hinge seat is provided at one end of the rack close to the connecting shaft. The rack is connected to the connecting shaft through the connecting hinge seat and the connecting rod. The driving component drives the gear assembly to rotate through the driving shaft, and further drives the rack to perform reciprocating movement in the horizontal direction. The movement of the rack drives the connecting hinge seat, the connecting rod and the connecting shaft to move.

[0011] As a further improvement of the present utility model: The driving mechanism includes a fixed seat, a cylinder, a connecting rod and a connecting shaft. The cylinder is mounted on the fixed seat. The connecting shaft is connected to the movable push plate assembly. The cylinder is connected to the connecting shaft through the connecting rod. The cylinder extends and retracts back and forth to drive the connecting rod and the connecting shaft to move, driving the movable push plate assembly to perform reciprocating movement.

[0012] As a further improvement of the present utility model: The driving mechanism includes a fixed seat and an electric push rod. The electric push rod is installed on the fixed seat through a push rod mounting seat. A connecting block is provided on the back of the movable push plate assembly, and the electric push rod is connected to the connecting block. The electric push rod extends and retracts back and forth to drive the movable push plate assembly to perform reciprocating motion.

[0013] As a further improvement of the present utility model: A cleaning component is further provided above the top baffle. The cleaning component is used to clean the coal samples that fall on the top baffle.

[0014] As a further improvement of the present utility model: The cleaning component is any one of a scraper, a pneumatic blowing component, and a vibrator.

[0015] As a further improvement of the present utility model: A clearance fit is provided between the side plate and the mounting seat, and a first scraper is further provided on the mounting seat close to the side plate.

[0016] As a further improvement of the present utility model: A clearance fit is provided between the top baffle and the mounting seat, and a second scraper is further provided on the mounting seat close to the top baffle.

[0017] As a further improvement of the present utility model: A sealing component is provided between the mounting seat and the fixed seat.

[0018] As a further improvement of the present utility model: A collection box for collecting coal samples is provided below the driving mechanism.

[0019] As a further improvement of the present utility model: It further includes a detection component. The detection component is used to detect whether the movable push plate assembly retracts to the initial position.

[0020] As a further improvement of the present utility model: The driving mechanism further includes a shield plate. The shield plate is used to cover the transmission components.

[0021] The present utility model also discloses a hammer crusher, which includes a crushing chamber, a crushing component and a sieve plate component arranged in the crushing chamber. A feeding port is opened above the crushing chamber. The sieve plate component is located below the crushing component. The feeding coal blocking and cleaning device as described above is arranged at the back of the feeding port on the crushing chamber.

[0022] Compared with the prior art, the advantages of the present utility model are as follows:

[0023] 1. The coal-blocking cleaning device for the hammer crusher of the present utility model adopts a movable push plate assembly design. The movable push plate assembly is provided with an arc-shaped coal-receiving plate, and the size of the arc is the same as or fits the rotation diameter of the hammer of the hammer crusher. The driving mechanism drives the arc-shaped coal-receiving plate to perform telescopic movement. When the movable push plate assembly extends to the maximum stroke, the coal-receiving surface of the arc-shaped coal-receiving plate fits the rotation surface of the hammer. The hammer of the crusher can strike and scrape off the coal sample adhered to the arc-shaped coal-receiving plate. After the coal sample adhered to the arc-shaped coal-receiving plate of the movable push plate assembly is cleaned, the movable push plate assembly retracts under the action of the driving mechanism. The present utility model uses the hammer running in the crusher to scrape off the coal sample on the arc-shaped coal-receiving plate, with good cleaning effect, without the need to additionally set components such as cleaning rods on the coal-receiving surface, and it is not easy to have situations such as jamming and tripping.

[0024] 2. For the hammer crusher of the present utility model, a coal-blocking cleaning device is arranged at the back of the feeding port on the crushing cavity. The coal-blocking cleaning device drives the movable push plate assembly to perform reciprocating telescopic movement through the driving mechanism, and uses the rotating hammer on the hammer crusher to scrape off the coal sample adhered to the arc-shaped coal-receiving surface of the movable push plate assembly. The cleaning effect is good, which can effectively prevent the coal sample from blocking at the feeding port of the crusher, ensure the smooth and reliable operation of the equipment, and effectively reduce the risk of jamming and tripping. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the three-dimensional structure diagram of the coal-blocking cleaning device for the feeding of the present utility model without the installation of the protective cover plate in the first specific embodiment.

[0026] Figure 2 is the three-dimensional structure diagram of the coal-blocking cleaning device for the feeding of the present utility model from another perspective without the installation of the protective cover plate in the first specific embodiment.

[0027] Figure 3 is the sectional view of the coal-blocking cleaning device for the feeding of the present utility model in the first specific embodiment.

[0028] Figure 4 is the three-dimensional structure diagram of the coal-blocking cleaning device for the feeding of the present utility model with the installation of the protective cover plate in the first specific embodiment.

[0029] Figure 5 is the three-dimensional structure diagram of the coal-blocking cleaning device for the feeding of the present utility model without the installation of the protective cover plate in the second specific embodiment.

[0030] Figure 6 is the sectional view of the coal-blocking cleaning device for the feeding of the present utility model in the second specific embodiment.

[0031] Figure 7 is the three-dimensional structure diagram of the coal-blocking cleaning device for the feeding of the present utility model without the installation of the protective cover plate in the third specific embodiment.

[0032] Figure 8 This is the sectional view of the feeding coal blockage cleaning device of the present utility model in the third specific embodiment.

[0033] Figure 9 This is the three-dimensional structure diagram of the feeding coal blockage cleaning device of the present utility model without installing the shield plate in the fourth specific embodiment.

[0034] Figure 10 This is the sectional view of the feeding coal blockage cleaning device of the present utility model in the fourth specific embodiment.

[0035] Figure 11 This is the sectional view of the hammer crusher of the present utility model in the fifth specific embodiment.

[0036] Figure 12 This is the sectional view of the hammer crusher of the present utility model in the sixth specific embodiment.

[0037] Figure 13 This is the sectional view of the hammer crusher of the present utility model in the seventh specific embodiment.

[0038] Figure 14 This is the sectional view of the hammer crusher of the present utility model in the eighth specific embodiment.

[0039] Legend:

[0040] 1. Mounting seat; 2. Moving push plate assembly; 21. Arc-shaped feeding plate; 22. Top baffle; 23. Side plate; 24. Rotating shaft; 25. Connecting block; 3. Driving mechanism; 31. Fixed seat; 32. Driving component; 33. Driving shaft; 34. Eccentric wheel; 35. Connecting rod; 36. Connecting shaft; 371. Gear assembly; 372. Slide block mounting seat; 373. Rack; 374. Linear guide rail; 375. Connecting hinge seat; 381. Cylinder; 391. Electric push rod; 392. Push rod mounting seat; 4. Cleaning assembly; 5. First scraper; 6. Second scraper; 7. Sealing assembly; 8. Collection box; 9. Detection assembly; 10. Shield plate; 100. Crushing cavity; 101. Crushing component; 102. Sieve plate assembly. Detailed implementation manners

[0041] The following will further describe the present utility model in detail with reference to the specification drawings and specific embodiments.

[0042] Embodiment 1

[0043] As Figures 1 to 4As shown, this embodiment discloses a coal feed blockage cleaning device for a hammer crusher, comprising a mounting base 1, a movable push plate assembly 2 and a driving mechanism 3. The movable push plate assembly 2 is mounted on the back of the feed port of the hammer crusher through the mounting base 1. The movable push plate assembly 2 includes at least one arc-shaped material receiving plate 21. The driving mechanism 3 is used to drive the arc-shaped material receiving plate 21 to perform telescopic movement. When a coal sample is adhered to the arc-shaped material receiving plate 21, the driving mechanism 3 drives the movable push plate assembly 2 to extend the hammer head close to the crusher so as to knock and scrape off the adhered coal sample through the hammer head of the crusher.

[0044] The coal-blocking cleaning device for the hammer crusher in this embodiment is designed with a mobile push plate assembly 2. The mobile push plate assembly 2 is provided with an arc-shaped material-receiving plate 21. The size of the arc is the same as or fits the rotating diameter of the hammer head of the hammer crusher. The driving mechanism 3 drives the arc-shaped material-receiving plate 21 to perform telescopic movement. When the mobile push plate assembly 2 extends to the maximum stroke, the material-receiving surface of the arc-shaped material-receiving plate 21 fits the rotating surface of the hammer head. The hammer head of the crusher can hit and scrape off the coal sample adhered to the arc-shaped material-receiving plate 21. After the coal sample adhered to the arc-shaped material-receiving plate 21 of the mobile push plate assembly 2 is cleaned, the mobile push plate assembly 2 retracts under the action of the driving mechanism 3. The utility model utilizes the hammer head running in the crusher to scrape off the coal sample on the arc-shaped material-receiving plate 21, and has a good cleaning effect. There is no need to set additional components such as cleaning rods on the material-receiving surface, and it is not easy to get stuck or trip.

[0045] In this embodiment, the movable push plate assembly 2 further includes a top baffle 22 and two side plates 23. The top of the arc-shaped material receiving plate 21 is connected to the top baffle 22, the bottom of the arc-shaped material receiving plate 21 is connected to the mounting seat 1 through a rotating shaft 24, and the two sides of the arc-shaped material receiving plate 21 are respectively connected to the two side plates 23. When the driving mechanism 3 drives the movable push plate assembly 2 to extend forward, the arc-shaped material receiving plate 21 rotates forward around the rotating shaft 24, approaches and fits the rotating surface of the hammer head, and uses the hammer head to scrape off the adhered coal sample.

[0046] In this embodiment, the driving mechanism 3 includes a fixed seat 31, a driving assembly 32, a driving shaft 33, an eccentric wheel 34, a connecting rod 35 and a connecting shaft 36. The driving assembly 32 is installed on the mounting seat 1 through the fixed seat 31, and the connecting shaft 36 is connected to the movable push plate assembly 2. The eccentric wheel 34 is connected to the connecting shaft 36 through the connecting rod 35. The driving assembly 32 drives the eccentric wheel 34 to rotate through the driving shaft 33, and the rotation of the eccentric wheel 34 drives the connecting rod 35 and the connecting shaft 36 to move. The movable push plate assembly 2 in this embodiment forms a crank rocker structure with the driving mechanism 3. The movable push plate assembly 2 reciprocates under the drive of the driving mechanism 3, so that the feeding port of the crushing chamber 100 will not be accumulated by coal samples, and a wedge-shaped structure will not be formed to increase resistance. The equipment runs more smoothly and reliably, and no jamming and tripping will occur.

[0047] In this embodiment, a cleaning assembly 4 is further provided above the top baffle 22. The cleaning assembly 4 is used to clean the coal samples that fall on the top baffle 22. Further, in a preferred embodiment, the cleaning assembly 4 is a scraper. When the moving push plate assembly 2 reciprocates and retracts, the scraper scrapes off the accumulated coal samples on the top baffle 22 to achieve the cleaning effect. The distance that the scraper extends is the same as the distance that the moving push plate assembly 2 protrudes from the mounting seat 1 when the extension stroke is the smallest (i.e., the retracted state), so as to ensure that the scraping range of the scraper can cover the entire top baffle 22 and ensure a good cleaning effect. It should be noted that in other embodiments, the cleaning assembly 4 can also be a gas blowing assembly to blow the coal samples clean; or the cleaning assembly 4 is a vibrator to clean the accumulated coal samples by vibrating the top baffle 22; or the cleaning assembly 4 is a movable push block to clean the coal samples by moving above the top baffle 22.

[0048] In this embodiment, there is a clearance fit between the side plate 23 and the mounting seat 1, and a first scraper 5 is further provided on the mounting seat 1 close to the side plate 23. There is a clearance fit between the top baffle 22 and the mounting seat 1, and a second scraper 6 is further provided on the mounting seat 1 close to the top baffle 22. Since the moving push plate assembly 2 needs to reciprocate and there is a gap with the mounting seat 1, to ensure the sealing performance of the cleaning device, the first scraper 5 and the second scraper 6 serve as the first barrier for sealing to reduce the risk of coal sample overflow. To better achieve the sealing performance of the cleaning device, a groove structure is provided between the mounting seat 1 and the fixed seat 31, and a sealing assembly 7 (such as filled sponge rubber) is arranged in the groove structure. By setting the sealing assembly 7, a second barrier for sealing is formed.

[0049] In this embodiment, considering that the equipment runs for a long time and it is inevitable that a small amount of coal samples leak out when the cleaning device is set up. To avoid the coal samples leaking out and affecting the working environment and ensure that the surrounding of the equipment is clean and beautiful. A collection box 8 for collecting coal samples is provided below the driving mechanism 3. The extremely small amount of leaked coal samples are collected by the collection box 8. Further, in a preferred embodiment, the collection box 8 adopts a pull-out design for convenient maintenance.

[0050] In this embodiment, a detection assembly 9 is further included. The detection assembly 9 is used to detect whether the moving push plate assembly 2 retracts to the initial position. Further, in a preferred embodiment, the detection assembly 9 includes an induction piece and a sensor arranged at the end of the driving shaft 33. When the moving push plate assembly 2 retracts to the initial position (i.e., the position where the extension stroke is the smallest), the equipment will stop to ensure that all the coal samples on the top baffle 22 are cleaned up. In other embodiments, the detection assembly 9 can also be encoder detection or travel switch detection.

[0051] In this embodiment, the driving mechanism 3 further includes a shield plate 10. The shield plate 10 is used to cover the transmission components. By covering all the transmission components with the shield plate 10, the operating safety of the equipment is improved.

[0052] Example Two

[0053] As Figure 5 and Figure 6 shown, this embodiment is basically the same as Embodiment One. The difference is that in this embodiment, the driving mechanism 3 includes a fixed seat 31, a driving component 32, a driving shaft 33, a gear component 371, a slider mounting seat 372, a rack 373, a linear guide rail 374, a connecting rod 35 and a connecting shaft 36. The driving component 32 is installed on the mounting seat 1 through the fixed seat 31. The connecting shaft 36 is connected to the moving push plate component 2. The gear component 371 is installed on the driving shaft 33. The slider mounting seat 372 is installed on the fixed seat 31. The rack 373 is connected to the linear guide rail 374. The linear guide rail 374 is installed on the slider mounting seat 372 through a slider. One end of the rack 373 close to the connecting shaft 36 is provided with a connecting hinge seat 375. The rack 373 is connected to the connecting shaft 36 through the connecting hinge seat 375 and the connecting rod 35. The driving component 32 drives the gear component 371 to rotate through the driving shaft 33, and then drives the rack 373 to perform a reciprocating motion in the horizontal direction. The movement of the rack 373 drives the connecting hinge seat 375, the connecting rod 35 and the connecting shaft 36 to move. In this embodiment, the rack 373 is driven to move by the gear component 371, so as to drive the moving push plate component 2 to move. Compared with other complex transmission devices, the gear-rack transmission mechanism has a simpler structure and is convenient for maintenance and repair.

[0054] Example Three

[0055] As Figure 7 and Figure 8 shown, this embodiment is basically the same as Embodiment One. The difference is that in this embodiment, the driving mechanism 3 includes a fixed seat 31, a cylinder 381, a connecting rod 35 and a connecting shaft 36. The cylinder 381 is installed on the fixed seat 31. The connecting shaft 36 is connected to the moving push plate component 2. The cylinder 381 is connected to the connecting shaft 36 through the connecting rod 35. The cylinder 381 extends and retracts back and forth to drive the connecting rod 35 and the connecting shaft 36 to move, driving the moving push plate component 2 to perform a reciprocating motion. The cylinder 381 can be used to realize the fast forward and backward movement of the moving push plate component 2. The detection component 9 can also be a magnetic induction switch arranged on the cylinder 381 to ensure that the cylinder can accurately obtain the signal when the moving push plate component 2 retracts to the initial position.

[0056] Example Four

[0057] As Figure 9 and Figure 10As shown in the figure, this embodiment is basically the same as the first embodiment, except that the driving mechanism 3 includes a fixed seat 31 and an electric push rod 391. The electric push rod 391 is installed on the fixed seat 31 through a push rod mounting seat 392. A connecting block 25 is provided on the back of the movable push plate assembly 2, and the electric push rod 391 is connected to the connecting block 25. The electric push rod 391 expands and contracts back and forth to drive the movable push plate assembly 2 to perform reciprocating motion. The electric push rod 391 can also stably and reliably drive the movable push plate assembly 2 to move back and forth.

[0058] Embodiment Five

[0059] As Figure 11 shown, this embodiment discloses a hammer crusher, which includes a crushing chamber 100, a crushing component 101 and a screen plate component 102 arranged in the crushing chamber 100. A feeding port is opened above the crushing chamber 100, and the screen plate component 102 is located below the crushing component 101. A coal blockage cleaning device for the feeding port as described in the first embodiment is arranged at the back of the feeding port on the crushing chamber 100.

[0060] In the hammer crusher of this embodiment, a coal blockage cleaning device for the feeding port is arranged at the back of the feeding port on the crushing chamber 100. The coal blockage cleaning device for the feeding port drives the movable push plate assembly 2 to perform reciprocating telescopic motion through the driving mechanism 3. The driving mechanism 3 includes a fixed seat 31, a driving component 32, a driving shaft 33, an eccentric wheel 34, a connecting rod 35 and a connecting shaft 36. The driving component 32 is installed on the mounting seat 1 through the fixed seat 31. The connecting shaft 36 is connected to the movable push plate assembly 2, and the eccentric wheel 34 is connected to the connecting shaft 36 through the connecting rod 35. The driving component 32 drives the eccentric wheel 34 to rotate through the driving shaft 33, and the rotation of the eccentric wheel 34 drives the connecting rod 35 and the connecting shaft 36 to move. When the movable push plate assembly 2 extends forward, the coal sample adhered to the arc-shaped feeding plate 21 of the movable push plate assembly 2 can be scraped off by the rotating hammer head on the hammer crusher, and the cleaning effect is good. It can effectively prevent the coal sample at the feeding port of the crusher from being blocked, ensure the smooth and reliable operation of the equipment, and effectively reduce the risk of jamming and tripping.

[0061] Embodiment Six

[0062] As Figure 12 shown, this embodiment discloses a hammer crusher, which includes a crushing chamber 100, a crushing component 101 and a screen plate component 102 arranged in the crushing chamber 100. A feeding port is opened above the crushing chamber 100, and the screen plate component 102 is located below the crushing component 101. A coal blockage cleaning device for the feeding port as described in the second embodiment is arranged at the back of the feeding port on the crushing chamber 100.

[0063] In the hammer crusher of this embodiment, a coal-blocking cleaning device for the feed inlet is provided at the back of the feed inlet of the crushing chamber 100. The coal-blocking cleaning device for the feed inlet drives the movable push plate assembly 2 to perform reciprocating telescopic motion through the driving mechanism 3. The driving mechanism 3 includes a fixed seat 31, a driving assembly 32, a driving shaft 33, a gear assembly 371, a slider mounting seat 372, a rack 373, a linear guide rail 374, a connecting rod 35 and a connecting shaft 36. The driving assembly 32 is installed on the mounting seat 1 through the fixed seat 31. The connecting shaft 36 is connected to the movable push plate assembly 2. The gear assembly 371 is installed on the driving shaft 33. The slider mounting seat 372 is installed on the fixed seat 31. The rack 373 is connected to the linear guide rail 374. The linear guide rail 374 is installed on the slider mounting seat 372 through a slider. A connecting hinge seat 375 is provided at one end of the rack 373 close to the connecting shaft 36. The rack 373 is connected to the connecting shaft 36 through the connecting hinge seat 375 and the connecting rod 35. The driving assembly 32 drives the gear assembly 371 to rotate through the driving shaft 33, and then drives the rack 373 to perform reciprocating motion in the horizontal direction. The motion of the rack 373 drives the connecting hinge seat 375, the connecting rod 35 and the connecting shaft 36 to move. When the movable push plate assembly 2 extends forward, the coal sample adhered to the arc-shaped material receiving plate 21 of the movable push plate assembly 2 can be scraped off by the rotating hammer head on the hammer crusher. The cleaning effect is good, which can effectively prevent the coal sample at the feed inlet of the crusher from being blocked, ensure the smooth and reliable operation of the equipment, and effectively reduce the risk of jamming and tripping.

[0064] Embodiment VII

[0065] As Figure 13 As shown in the figure, a hammer crusher is disclosed in this embodiment, which includes a crushing chamber 100, a crushing assembly 101 and a sieve plate assembly 102 arranged in the crushing chamber 100. A feed inlet is opened above the crushing chamber 100. The sieve plate assembly 102 is located below the crushing assembly 101. A coal-blocking cleaning device for the feed inlet as described in Embodiment III is provided at the back of the feed inlet of the crushing chamber 100.

[0066] In the hammer crusher of this embodiment, a coal-blocking cleaning device for the feed inlet is provided at the back of the feed inlet of the crushing chamber 100. The coal-blocking cleaning device for the feed inlet drives the movable push plate assembly 2 to perform reciprocating motion through the driving mechanism 3. The driving mechanism 3 includes a fixed seat 31, a cylinder 381, a connecting rod 35 and a connecting shaft 36. The cylinder 381 is installed on the fixed seat 31. The connecting shaft 36 is connected to the movable push plate assembly 2. The cylinder 381 is connected to the connecting shaft 36 through the connecting rod 35. The front and back telescopic motion of the cylinder 381 drives the connecting rod 35 and the connecting shaft 36 to move, driving the movable push plate assembly 2 to perform reciprocating motion. When the movable push plate assembly 2 extends forward, the coal sample adhered to the arc-shaped material receiving plate 21 of the movable push plate assembly 2 can be scraped off by the rotating hammer head on the hammer crusher. The cleaning effect is good, which can effectively prevent the coal sample at the feed inlet of the crusher from being blocked, ensure the smooth and reliable operation of the equipment, and effectively reduce the risk of jamming and tripping.

[0067] Embodiment VIII

[0068] As Figure 14 shown, in this embodiment, a hammer crusher is disclosed, which includes a crushing chamber 100, a crushing component 101 and a screen plate component 102 arranged in the crushing chamber 100. A feeding port is provided above the crushing chamber 100. The screen plate component 102 is located below the crushing component 101. At the back of the feeding port on the crushing chamber 100, a coal-blocking cleaning device for feeding as described in Embodiment IV is provided.

[0069] In the hammer crusher of this embodiment, a coal-blocking cleaning device for feeding is provided at the back of the feeding port on the crushing chamber 100. The coal-blocking cleaning device for feeding drives the movable push plate assembly 2 to perform reciprocating telescopic movement through a driving mechanism 3. The driving mechanism 3 includes a fixed seat 31 and an electric push rod 391. The electric push rod 391 is installed on the fixed seat 31 through a push rod mounting seat 392. A connecting block 25 is provided on the back of the movable push plate assembly 2. The electric push rod 391 is connected to the connecting block 25. The forward and backward telescopic movement of the electric push rod 391 drives the movable push plate assembly 2 to perform reciprocating movement. When the movable push plate assembly 2 extends forward, the coal sample adhered to the arc-shaped feeding plate 21 of the movable push plate assembly 2 can be scraped off by the rotating hammer head on the hammer crusher. The cleaning effect is good, which can effectively prevent the coal sample at the feeding port of the crusher from being blocked, ensure the smooth and reliable operation of the equipment, and effectively reduce the risk of jamming and tripping.

[0070] The above is only the preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should be regarded as within the protection scope of the present invention.

Claims

1. A device for cleaning coal blockage at the feed of a hammer crusher, characterized in that: The invention comprises a mounting seat (1), a movable push plate assembly (2) and a driving mechanism (3), wherein the movable push plate assembly (2) is mounted on the back of a material inlet of a hammer crusher via the mounting seat (1), the movable push plate assembly (2) comprises at least one arc-shaped material receiving plate (21), and the driving mechanism (3) is used to drive the arc-shaped material receiving plate (21) to perform telescopic movement. When a coal sample is adhered to the arc-shaped material receiving plate (21), the driving mechanism (3) drives the movable push plate assembly (2) to extend to a hammer head close to the crusher so as to knock and scrape off the adhered coal sample through the hammer head of the crusher.

2. The device for cleaning coal blockage at the feed of a hammer crusher according to claim 1, characterized in that: The movable push plate assembly (2) further includes a top baffle (22) and two side plates (23); the top end of the arc-shaped material receiving plate (21) is connected to the top baffle (22); the bottom end of the arc-shaped material receiving plate (21) is connected to the mounting seat (1) via a rotating shaft (24); and the two sides of the arc-shaped material receiving plate (21) are respectively connected to the two side plates (23).

3. The device for cleaning coal blockage at the feed of a hammer crusher according to claim 1, characterized in that: The driving mechanism (3) comprises a fixed seat (31), a driving assembly (32), a driving shaft (33), an eccentric wheel (34), a connecting rod (35) and a connecting shaft (36); the driving assembly (32) is mounted on the mounting seat (1) via the fixed seat (31); the connecting shaft (36) is connected to the movable push plate assembly (2); the eccentric wheel (34) is connected to the connecting shaft (36) via the connecting rod (35); the driving assembly (32) drives the eccentric wheel (34) to rotate via the driving shaft (33); the rotation of the eccentric wheel (34) drives the connecting rod (35) and the connecting shaft (36) to move.

4. The device for cleaning coal blockage at the feed of a hammer crusher according to claim 1, characterized in that: The driving mechanism (3) comprises a fixed seat (31), a driving assembly (32), a driving shaft (33), a gear assembly (371), a slider mounting seat (372), a rack (373), a linear guide rail (374), a connecting rod (35) and a connecting shaft (36); the driving assembly (32) is mounted on the mounting seat (1) via the fixed seat (31); the connecting shaft (36) is connected to the movable push plate assembly (2); the gear assembly (371) is mounted on the driving shaft (33); the slider mounting seat (372) is mounted on the fixed seat (31); the rack (373) is connected to the linear guide rail (374); The linear guide rail (374) is connected to the connecting shaft (36), the linear guide rail (374) is installed on the connecting shaft mounting seat (372) through a slider, a connecting hinge seat (375) is provided at one end of the rack (373) close to the connecting shaft (36), the rack (373) is connected to the connecting shaft (36) through the connecting hinge seat (375) and the connecting rod (35), the driving assembly (32) drives the gear assembly (371) to rotate through the driving shaft (33), thereby driving the rack (373) to reciprocate in the horizontal direction, and the movement of the rack (373) drives the connecting hinge seat (375), the connecting rod (35) and the connecting shaft (36) to move.

5. The device for cleaning coal blockage at the feed of a hammer crusher according to claim 1, characterized in that: The driving mechanism (3) comprises a fixed seat (31), a cylinder (381), a connecting rod (35) and a connecting shaft (36); the cylinder (381) is mounted on the fixed seat (31); the connecting shaft (36) is connected to the movable push plate assembly (2); the cylinder (381) is connected to the connecting shaft (36) via the connecting rod (35); the cylinder (381) moves forward and backward to drive the connecting rod (35) and the connecting shaft (36) to move, thereby driving the movable push plate assembly (2) to perform reciprocating motion.

6. The device for cleaning coal blockage at the feed of a hammer crusher according to claim 1, characterized in that: The driving mechanism (3) comprises a fixed seat (31) and an electric push rod (391), wherein the electric push rod (391) is mounted on the fixed seat (31) via a push rod mounting seat (392), a connecting block (25) is provided on the back side of the arc-shaped material receiving plate (21), and the electric push rod (391) is connected to the connecting block (25), and the electric push rod (391) moves back and forth to drive the movable push plate assembly (2) to perform reciprocating motion.

7. The device for cleaning coal blockage at the feed of a hammer crusher according to claim 2, characterized in that: A cleaning component (4) is also provided above the top baffle (22), and the cleaning component (4) is used to clean the coal sample that has fallen onto the top baffle (22).

8. The device for cleaning coal blockage at the feed of a hammer crusher according to claim 7, characterized in that: The cleaning component (4) is any one of a scraper, an air blowing component, and a vibrator.

9. The device for cleaning coal blockage at the feed of a hammer crusher according to claim 2, characterized in that: There is a clearance fit between the side plate (23) and the mounting seat (1), and a first scraper (5) is also provided on the mounting seat (1) close to the side plate (23).

10. The device for cleaning coal blockage at the feed of a hammer crusher according to claim 2, characterized in that: There is a clearance fit between the top baffle plate (22) and the mounting seat (1), and a second scraper (6) is also provided on the mounting seat (1) close to the top baffle plate (22).

11. The device for cleaning coal blockage at the feed of a hammer crusher according to any one of claims 3 to 6, characterized in that: A sealing assembly (7) is provided between the mounting seat (1) and the fixing seat (31).

12. The device for cleaning coal blockage at the feed of a hammer crusher according to any one of claims 1 to 10, characterized in that: A collection box (8) for collecting coal samples is provided below the driving mechanism (3).

13. The device for cleaning coal blockage at the feed of a hammer crusher according to any one of claims 1 to 10, characterized in that: It also comprises a detection component (9), wherein the detection component (9) is used to detect whether the movable push plate component (2) is retracted to an initial position.

14. The device for cleaning coal blockage at the feed of a hammer crusher according to any one of claims 1 to 10, characterized in that: The driving mechanism (3) further comprises a shield plate (10), wherein the shield plate (10) is used for covering the transmission components.

15. A hammer crusher, characterized in that: The invention comprises a crushing chamber (100), and a crushing assembly (101) and a screen plate assembly (102) arranged in the crushing chamber (100); a feed inlet is provided on the top of the crushing chamber (100); the screen plate assembly (102) is located below the crushing assembly (101); and a feed blockage cleaning device according to any one of claims 1 to 14 is provided at the back of the feed inlet on the crushing chamber (100).

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