Double-gate four-rod blanking structure of double-roller machine

Abstract

The double-gate four-rod discharging structure comprises a rack and a feeding cylinder arranged on the rack, a left movable discharging guide gate plate and a right movable discharging guide gate plate which are hinged to the rack are arranged in the feeding cylinder, the left movable discharging guide gate plate is hinged to one end of a left first connecting rod, and the right movable discharging guide gate plate is hinged to the other end of a right first connecting rod. The other end of the first left connecting rod is hinged to one end of a second left connecting rod and one end of a left telescopic rod, the other end of the second left connecting rod and the other end of the left telescopic rod are hinged to the rack, and the movable discharging guide gate plate, one end of the first left connecting rod, one end of the second left connecting rod and the rack are connected into a four-connecting-rod structure. The driving connection mode of the right movable discharging guide flashboard is the same as that of the left movable discharging guide flashboard, and a dynamic feeding port is formed between the left movable discharging guide flashboard and the right movable discharging guide flashboard. The sand making machine has the advantage that the feeding speed can be adjusted, and the problem that the size of a feeding port of an existing sand making machine is not changed, and the requirement for adjusting the feeding speed cannot be met is solved.

Description

Technical Field

[0001] The invention relates to the technical field of roller sand making machines, in particular to a double-gate four-rod material discharge structure of a roller machine. Background Art

[0002] A roller sand making machine usually includes a fixed roller and a movable roller. The material is fed from above the two rollers, and is continuously brought between the rollers by the squeezing roller, and discharged from the bottom of the machine with an ideal particle size. The stone is crushed into sand by the relative movement of the two rollers. In the Chinese patent literature, patent number CN202021220681X was authorized and announced on April 13, 2021. The application includes a vertical frame, a first rolling roller, a second rolling roller and a drive motor. A rolling channel is formed between the first rolling roller and the second rolling roller. The first rolling roller is rotatably connected to the frame, and the drive motor is connected to the frame. The drive motor is used to drive the first rolling roller to rotate. The frame is provided with a number of supporting feet, and the supporting feet include a bottom plate, a lifting plate, a top plate and a column arranged in sequence from bottom to top, and a positioning ring is provided on the bottom plate. The shortcoming of the roller sand making machine in the prior art is that the size of the feed port remains unchanged, so that the feed speed cannot be adjusted as needed. Summary of the invention

[0003] The present invention aims to provide a double-gate four-rod feeding structure of a roller machine with adjustable feeding speed, which solves the problem that the feeding port size of the existing sand making machine is unchanged and cannot meet the need of feeding speed adjustment.

[0004] The above technical problems are solved by the following technical solutions: a double-gate four-rod unloading structure of a roller mill, comprising a frame and a feed cylinder arranged on the frame and located above two rolling cylinders, wherein a left movable unloading guide gate plate hinged with the frame and a right movable unloading guide gate plate hinged with the frame are arranged in the feed cylinder, wherein the left movable unloading guide gate plate is hinged with one end of a left first connecting rod, the other end of the left first connecting rod is hinged with one end of a left second connecting rod and one end of a left telescopic rod, the other end of the left second connecting rod and the other end of the left telescopic rod are hinged with the frame, and the movable unloading guide gate plate is hinged with one end of a left first connecting rod, the other end of the left first connecting rod and the other end of the left telescopic rod are hinged with the frame, and the movable unloading guide gate plate is hinged with one end of a left first connecting rod, the other end of the left second ... , the left first connecting rod, one end of the left second connecting rod and the frame form a four-link structure, the right movable material unloading guide gate is hinged with one end of the right first connecting rod, the other end of the right first connecting rod is hinged with one end of the right second connecting rod and one end of the right telescopic rod, the other end of the right second connecting rod and the other end of the right telescopic rod are hinged with the frame, the movable material unloading guide gate, the right first connecting rod, one end of the right second connecting rod and the frame form a four-link structure, the other end of the right telescopic rod is hinged with the frame, and a dynamic feed port is formed between the left movable material unloading guide gate and the right movable material unloading guide gate. When in use, the left and right movable material unloading guide gates are driven to swing by the left and right telescopic rods respectively, so that the dynamic feed port changes its opening and closing size, thereby controlling the unloading speed, avoiding the idle rotation of the roller machine without material, and preventing the feed barrel from being blocked and out of material. If there is no material, the feed barrel is easily damaged when material is received, and it can also avoid the phenomenon of jamming when the feed is fed. The existing feeds are all of constant size and cannot solve the above problems.

[0005] Preferably, a right material discharge guide gate and a left material discharge guide gate are provided in the feed barrel, the right material discharge guide gate is located above the right material discharge guide gate, the lower end of the right material discharge guide gate is lower than the lower end of the right material discharge guide gate, the lower end of the right material discharge guide gate exceeds the right material discharge guide gate to the left, the left material discharge guide gate is located above the left material discharge guide gate, the lower end of the left material discharge guide gate is lower than the lower end of the left material discharge guide gate, the lower end of the left material discharge guide gate exceeds the left material discharge guide gate to the right, and a static feed port is formed between the right material discharge guide gate and the left material discharge guide gate, so that it can save effort when driving the left and right material discharge guide gates to swing.

[0006] Preferably, it also includes a left support plate whose upper end is fixed to the feed barrel and located below the left feed guide gate plate, and a right support plate whose upper end is fixed to the feed barrel and located below the right feed guide gate plate. The left feed guide gate plate and the feed barrel can move relative to each other. A left guide rod which is penetrated by the left support plate is fixed to the lower surface of the left feed guide gate plate. A left shock-absorbing spring which drives the left feed guide gate plate to reset is sleeved on the left guide rod. A left sound insulation sponge is arranged between the left support plate and the left feed guide gate plate. When in a free state, the left sound insulation sponge is connected to the left material guide gate and the left support plate; the right material guide gate and the feeding tube can move relatively, the lower surface of the right material guide gate is fixedly connected with a right guide rod penetrating the right support plate, the right guide rod is sleeved with a right damping spring for driving the right material guide gate to reset, a right sound insulation sponge is arranged between the right support plate and the right material guide gate, and the right sound insulation sponge is connected to the right material guide gate and the right support plate when the right material guide gate is in a free state. It can reduce the damage to the left and right material guide gates during feeding and reduce the noise during feeding.

[0007] Preferably, it also includes a water tank, a left push-type nozzle and a right push-type nozzle, the water inlet pipe of the left push-type nozzle extends into the water tank, the left push-type nozzle is fixed together with the left guide rod, the upper end of the left support plate is provided with two left water baffles distributed along the front-to-back direction, the left support plate and the two left water baffles form a left water supply trough, and the nozzle of the left push-type nozzle is located in the left water supply trough; the water inlet pipe of the right push-type nozzle extends into the water tank, the right push-type nozzle is fixed together with the right guide rod, the upper end of the right support plate is provided with two right water baffles distributed along the front-to-back direction, the right support plate and the two right water baffles form a right water supply trough, and the nozzle of the right push-type nozzle is located in the right water supply trough. It can spray water on the material stones entering the roller mill at the same time when feeding. The water is brought to the roller by the stones to cool the roller, avoiding the roller from softening due to long-term action. Softening is easy to wear and shorten the service life. The water is output through the sound insulation sponge, which can improve the sound insulation effect of the sound insulation sponge.

[0008] Preferably, the frame is hinged with the left movable material unloading guide gate through the left first front-to-back hinge shaft, the left movable material unloading guide gate is hinged with the left first connecting rod through the left second front-to-back hinge shaft, the left first connecting rod is hinged with the left second connecting rod and the left telescopic rod through the left third front-to-back hinge shaft, the left second connecting rod is hinged with the frame through the left fourth front-to-back hinge shaft, and the left telescopic rod is hinged with the frame through the left fifth front-to-back hinge shaft; the frame is hinged with the right movable material unloading guide gate through the right first front-to-back hinge shaft, the right movable material unloading guide gate is hinged with the right first connecting rod through the right second front-to-back hinge shaft, the right first connecting rod is hinged with the right second connecting rod and the right telescopic rod through the right third front-to-back hinge shaft, the right second connecting rod is hinged with the frame through the right fourth front-to-back hinge shaft, and the right telescopic rod is hinged with the frame through the right fifth front-to-back hinge shaft. The movable material unloading guide gate is not easy to shake when it swings. It can improve the accuracy of controlling unloading.

[0009] Preferably, the telescopic rod is an electric cylinder, an oil cylinder or a gas cylinder; the right telescopic rod is an electric cylinder, an oil cylinder or a gas cylinder.

[0010] Preferably, the hinge point between the left first connecting rod and the left movable material discharge guide gate is located above the hinge point between the left movable material discharge guide gate and the frame, and the hinge point between the right first connecting rod and the right movable material discharge guide gate is located above the hinge point between the right movable material discharge guide gate and the frame. The lever arm driven by the telescopic rod can be designed to be long, thereby reducing the force of opening and closing the movable material discharge guide gate.

[0011] Preferably, the frame is provided with a left longitudinal beam, the right side of the left longitudinal beam is provided with a right connecting ear of the left longitudinal beam, the left side is provided with a left connecting ear of the left longitudinal beam, the left movable material unloading guide gate is hinged on the right connecting ear of the left longitudinal beam, and the left second connecting rod is hinged on the left connecting ear of the left longitudinal beam; the frame is provided with a right longitudinal beam, the right side of the right longitudinal beam is provided with a right connecting ear of the right longitudinal beam, the left side is provided with a left connecting ear of the right longitudinal beam, the right movable material unloading guide gate is hinged on the left connecting ear of the right longitudinal beam, and the right second connecting rod is hinged on the right connecting ear of the right longitudinal beam. Damage to the part where the movable material unloading guide gate is connected to the frame can be avoided.

[0012] Preferably, the left second connecting rod is a bent rod structure bent toward the left longitudinal beam, and the right second connecting rod is a bent rod structure bent toward the right longitudinal beam, so that interference between the longitudinal beam and the second connecting rod can be avoided in a compact structure.

[0013] Preferably, the left longitudinal beam comprises a left longitudinal flat tube, a left upper longitudinal strip fixed on the upper surface of the left longitudinal flat tube, and a left lower longitudinal strip fixed on the lower surface of the left longitudinal flat tube, and the left connecting ear of the left longitudinal rod is connected to the left longitudinal flat tube, the left upper longitudinal strip, and the left lower longitudinal strip at the same time; the right longitudinal beam comprises a right longitudinal flat tube, a right upper longitudinal strip fixed on the upper surface of the right longitudinal flat tube, and a right lower longitudinal strip fixed on the lower surface of the right longitudinal flat tube, and the right connecting ear of the right longitudinal rod is connected to the right longitudinal flat tube, the right upper longitudinal strip, and the right lower longitudinal strip at the same time. The connecting ear can play a role in strengthening the strength of the longitudinal beam, and can improve the strength of the longitudinal beam while reducing the weight.

[0014] The beneficial effect of the present invention is that the size of the feed opening can be adjusted, so that the feed speed can be changed by changing the size of the feed opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the first embodiment of the present invention; Figure 2 It is a partial schematic diagram of the present invention; Figure 3 is a schematic diagram of a second embodiment of the present invention; Figure 4 for Figure 3 A local enlarged schematic diagram of point A.

[0016] In the figure: frame 1, feed barrel 2, left longitudinal beam 3, right connecting ear of left longitudinal beam 4, left connecting ear of left longitudinal beam 5, left longitudinal flat tube 6, upper left longitudinal strip 7, lower left longitudinal strip 8, first left front-to-back hinge shaft 9, left movable unloading guide gate 10, second left front-to-back hinge shaft 11, first left connecting rod 12, third left front-to-back hinge shaft 13, second left connecting rod 14, left telescopic rod 15, fourth left front-to-back hinge shaft 16, fifth left front-to-back hinge shaft 33, left unloading guide gate 17, right longitudinal beam 18, right connecting ear of right longitudinal beam 19, left connecting ear of right longitudinal beam 20, right longitudinal flat tube 21, upper right longitudinal strip 22, lower right longitudinal strip 23, first right front-to-back hinge shaft 24, right movable unloading guide gate 25, second right front-to-back hinge shaft 26, first right connecting rod 27, third right front-to-back hinge shaft 33, Hinge shaft 28, right second connecting rod 29, right telescopic rod 30, right fourth front-to-back hinge shaft 31, right unloading guide gate plate 32, right fifth front-to-back hinge shaft 34, static feed port 35, dynamic feed port 36, left support plate 37, left baffle plate slant plate 38, left guide rod 39, left shock-absorbing spring 40, left sound insulation sponge 41, water storage tank 42, left push-type sprinkler head 43, left water baffle plate 44, left water supply trough 45, nozzle of left push-type sprinkler head 46, water inlet pipe of left push-type sprinkler head 47, right support plate 48, right baffle plate slant plate 49, right guide rod 50, right shock-absorbing spring 51, right sound insulation sponge 52, right push-type sprinkler head 53, right water baffle plate 54, right water supply trough 55, nozzle of right push-type sprinkler head 56, water inlet pipe of right push-type sprinkler head 57, rolling cylinder 58. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Example 1, see Figure 1 and Figure 2A double-gate four-rod unloading structure for a roller mill includes a frame 1 and a feed tube 2 arranged on the frame and located above two rolling tubes 58. The frame is provided with a left longitudinal beam 3, and a right connecting ear 4 of a left longitudinal beam portion is provided on the right side of the left longitudinal beam, and a left connecting ear 5 of a left longitudinal beam portion is provided on the left side. The left longitudinal beam includes a left longitudinal flat tube 6, a left upper longitudinal strip 7 fixed on the upper surface of the left longitudinal flat tube, and a left lower longitudinal strip 8 fixed on the lower surface of the left longitudinal flat tube. The left connecting ear of the left longitudinal rod portion is simultaneously connected to the left longitudinal flat tube, the left upper longitudinal strip and the left lower longitudinal strip. A left movable unloading guide gate 10 is provided in the feed tube, which is hinged to the right connecting ear of the left longitudinal beam portion through a left first front-to-back hinge shaft 9. The left movable material unloading guide gate is hinged with the left first connecting rod 12 through the left second front-to-back hinge shaft 11, the left first connecting rod is hinged with the left second connecting rod 14 and the left telescopic rod 15 through the left third front-to-back hinge shaft 13, the left second connecting rod is hinged with the left connecting ear of the left longitudinal beam through the left fourth front-to-back hinge shaft 16, and the left telescopic rod is hinged with the left fifth front-to-back hinge shaft 33 and the frame. The movable material unloading guide gate, the left first connecting rod, one end of the left second connecting rod and the frame are connected to form a four-bar structure. The left telescopic rod is an electric cylinder, an oil cylinder or an air cylinder, and in this embodiment, it is an electric cylinder. The hinge point of the left first connecting rod and the left movable material unloading guide gate is located above the hinge point of the left movable material unloading guide gate and the frame. The left second connecting rod is a bent rod structure bent toward the left longitudinal beam. It is estimated that there is a left material unloading guide gate 17 in the feed barrel. The left material unloading guide gate is located above the left movable material unloading guide gate, the lower end of the left movable material unloading guide gate is lower than the lower end of the left material unloading guide gate, and the lower end of the left movable material unloading guide gate exceeds the left material unloading guide gate to the right.

[0019] The frame is provided with a right longitudinal beam 18, and a right longitudinal beam right connecting ear 19 is provided on the right side of the right longitudinal beam, and a left longitudinal beam left connecting ear 20 is provided on the left side. The right longitudinal beam includes a right longitudinal flat tube 21, a right upper longitudinal strip 22 fixed on the upper surface of the right longitudinal flat tube, and a right lower longitudinal strip 23 fixed on the lower surface of the right longitudinal flat tube. The right connecting ear of the right longitudinal rod is simultaneously connected to the right longitudinal flat tube, the right upper longitudinal strip and the right lower longitudinal strip. A right movable material unloading guide gate 25 is provided in the feed barrel, which is hinged to the left connecting ear of the right longitudinal beam through the right first front-to-back hinge shaft 24. The right movable material unloading guide gate is hinged to the right first connecting rod 27 through the right second front-to-back hinge shaft 26, the right first connecting rod is hinged to the right second connecting rod 29 and the right telescopic rod 30 through the right third front-to-back hinge shaft 28, and the right second connecting rod is hinged to the right connecting ear of the right longitudinal beam through the right fourth front-to-back hinge shaft 31. The movable material unloading guide gate, the right first connecting rod, one end of the right second connecting rod and the frame are connected to form a four-bar structure. The right telescopic rod is an electric cylinder, an oil cylinder or a pneumatic cylinder. The hinge point of the right first connecting rod and the right movable material unloading guide gate is located above the hinge point of the right movable material unloading guide gate and the frame. The right second connecting rod is a bent rod structure bent toward the right longitudinal beam. It is estimated that there is a right material unloading guide gate 32 in the feed barrel. The right material unloading guide gate is located above the right movable material unloading guide gate, the lower end of the right movable material unloading guide gate is lower than the lower end of the right material unloading guide gate, and the lower end of the right movable material unloading guide gate exceeds the right material unloading guide gate to the left. The right telescopic rod and the right fifth front-to-back hinge shaft 34 are hinged to the frame.

[0020] A static feed inlet 35 is formed between the right material discharging guide gate and the left material discharging guide gate. A dynamic feed inlet 36 is formed between the left material discharging guide gate and the right material discharging guide gate.

[0021] When in use, the left and right dynamic unloading guide gates are driven to swing respectively by the left and right telescopic rods, so that the opening and closing size of the dynamic feed port is changed to control the unloading speed.

[0022] Embodiment 2 is different from Embodiment 1 in that: See also Figure 3 and Figure 4, and also includes a left support plate 37 located below the left material guide gate, the upper end of which is fixed with the feed barrel. The left material guide gate and the feed barrel can move relative to each other, and the feed barrel is fixedly and sealedly connected with a left baffle inclined plate 38 that blocks the gap between the upper end of the left material guide gate and the feed barrel. The lower surface of the left material guide gate is fixedly connected with a left guide rod 39 that penetrates the left support plate, and the left guide rod is sleeved with a left shock-absorbing spring 40 that drives the left material guide gate to reset. A left sound insulation sponge 41 is provided between the left support plate and the left material guide gate. When the left material guide gate is in a free state, the left sound insulation sponge is connected to the left material guide gate and the left support plate; and also includes a water tank 42 and a left push-type nozzle 43. The left push-type sprinkler is fixed together with the left guide rod, and the upper end of the left support plate is provided with two left water baffles 44 distributed in the front-rear direction, and the left support plate and the two left water baffles form a left water supply trough 45, and the nozzle 46 of the left push-type sprinkler is located in the left water supply trough. The water inlet pipe 47 of the left push-type sprinkler extends into the water storage tank.

[0023] It also includes a right support plate 48, the upper end of which is fixed with the feed barrel and is located below the right material discharge guide gate. The right material discharge guide gate and the feed barrel can move relative to each other, and the feed barrel is fixedly and sealedly connected with a right baffle inclined plate 49 that blocks the gap between the upper end of the right material discharge guide gate and the feed barrel. The lower surface of the right material discharge guide gate is fixedly connected with a right guide rod 50 that penetrates the right support plate, and the right guide rod is sleeved with a right shock-absorbing spring 51 that drives the right material discharge guide gate to reset. A right sound insulation sponge 52 is arranged between the right support plate and the right material discharge guide gate. When the right material discharge guide gate is in a free state, the right sound insulation sponge is connected with the right material discharge guide gate and the right support plate; it also includes a right press-type nozzle 53. The right push-type spray head is fixed together with the right guide rod, and the upper end of the right support plate is provided with two right water baffles 54 distributed in the front-rear direction, and the right support plate and the two right water baffles form a right water supply trough 55, and the nozzle 56 of the right push-type spray head is located in the right water supply trough. The water inlet pipe 57 of the right push-type spray head extends into the water storage tank.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-gate four-rod feeding structure of a roller mill, comprising a frame and a feeding cylinder arranged on the frame and located above two rolling cylinders, characterized in that: The feed barrel is provided with a left movable material discharge guide gate plate hinged with the frame and a right movable material discharge guide gate plate hinged with the frame, the left movable material discharge guide gate plate is hinged with one end of the left first connecting rod, the other end of the left first connecting rod is hinged with one end of the left second connecting rod and one end of the left telescopic rod, the other end of the left second connecting rod and the other end of the left telescopic rod are hinged with the frame, the movable material discharge guide gate plate, the left first connecting rod, one end of the left second connecting rod and the frame are connected to form a four-link structure, the The right movable material unloading guide gate is hinged together with one end of the right first connecting rod, the other end of the right first connecting rod is hinged together with one end of the right second connecting rod and one end of the right telescopic rod, the other end of the right second connecting rod and the other end of the right telescopic rod are hinged together with the frame, the movable material unloading guide gate, the right first connecting rod, one end of the right second connecting rod and the frame are connected to form a four-link structure, the other end of the right telescopic rod is hinged together with the frame, and a dynamic feed port is formed between the left movable material unloading guide gate and the right movable material unloading guide gate.

2. The double-gate four-rod unloading structure of the roller mill according to claim 1 is characterized in that: A right material discharge guide gate and a left material discharge guide gate are provided in the feed barrel, the right material discharge guide gate is located above the right material discharge guide gate, the lower end of the right material discharge guide gate is lower than the lower end of the right material discharge guide gate, and the lower end of the right material discharge guide gate exceeds the right material discharge guide gate to the left, the left material discharge guide gate is located above the left material discharge guide gate, the lower end of the left material discharge guide gate is lower than the lower end of the left material discharge guide gate, and the lower end of the left material discharge guide gate exceeds the left material discharge guide gate to the right, and a static feed port is formed between the right material discharge guide gate and the left material discharge guide gate.

3. The double-gate four-rod material unloading structure of the roller mill according to claim 2 is characterized in that: It also includes a left support plate whose upper end is fixed to the feed barrel and located below the left material guide gate plate, and a right support plate whose upper end is fixed to the feed barrel and located below the right material guide gate plate. The left material guide gate plate and the feed barrel can move relatively to each other. A left guide rod which is penetrated by the left support plate is fixed to the lower surface of the left material guide gate plate. A left shock-absorbing spring which drives the left material guide gate plate to reset is sleeved on the left guide rod. A left sound insulation sponge is arranged between the left support plate and the left material guide gate plate. The left material guide gate plate is in a When in a free state, the left sound insulation sponge is connected to the left material feed guide gate and the left support plate; the right material feed guide gate and the feed barrel can move relative to each other, and the lower surface of the right material feed guide gate is fixedly connected to a right guide rod penetrated by the right support plate, and the right guide rod is sleeved with a right shock-absorbing spring for driving the right material feed guide gate to reset, and a right sound insulation sponge is arranged between the right support plate and the right material feed guide gate. When the right material feed guide gate is in a free state, the right sound insulation sponge is connected to the right material feed guide gate and the right support plate.

4. The double-gate four-rod material unloading structure of the roller mill according to claim 3 is characterized in that: It also includes a water tank, a left push-type nozzle and a right push-type nozzle, the water inlet pipe of the left push-type nozzle extends into the water tank, the left push-type nozzle is fixed together with the left guide rod, the upper end of the left support plate is provided with two left water baffles distributed along the front-to-back direction, the left support plate and the two left water baffles form a left water supply trough, and the nozzle of the left push-type nozzle is located in the left water supply trough; the water inlet pipe of the right push-type nozzle extends into the water tank, the right push-type nozzle is fixed together with the right guide rod, the upper end of the right support plate is provided with two right water baffles distributed along the front-to-back direction, the right support plate and the two right water baffles form a right water supply trough, and the nozzle of the right push-type nozzle is located in the right water supply trough.

5. The double-gate four-rod material unloading structure of the roller mill according to claim 1, 2, 3 or 4, characterized in that: The frame is hinged with the left movable material unloading guide gate through the left first front-to-back hinge shaft, the left movable material unloading guide gate is hinged with the left first connecting rod through the left second front-to-back hinge shaft, the left first connecting rod is hinged with the left second connecting rod and the left telescopic rod through the left third front-to-back hinge shaft, the left second connecting rod is hinged with the frame through the left fourth front-to-back hinge shaft, and the left telescopic rod is hinged with the frame through the left fifth front-to-back hinge shaft; the frame is hinged with the right movable material unloading guide gate through the right first front-to-back hinge shaft, the right movable material unloading guide gate is hinged with the right first connecting rod through the right second front-to-back hinge shaft, the right first connecting rod is hinged with the right second connecting rod and the right telescopic rod through the right third front-to-back hinge shaft, the right second connecting rod is hinged with the frame through the right fourth front-to-back hinge shaft, and the right telescopic rod is hinged with the frame through the right fifth front-to-back hinge shaft.

6. The double-gate four-rod material unloading structure of the roller mill according to claim 1, 2, 3 or 4, characterized in that: The left telescopic rod is an electric cylinder, an oil cylinder or a gas cylinder, and the right telescopic rod is an electric cylinder, an oil cylinder or a gas cylinder.

7. The double-gate four-rod material unloading structure of the roller mill according to claim 1, 2, 3 or 4, characterized in that: The hinge point between the left first connecting rod and the left movable material discharge guide gate is located above the hinge point between the left movable material discharge guide gate and the frame, and the hinge point between the right first connecting rod and the right movable material discharge guide gate is located above the hinge point between the right movable material discharge guide gate and the frame.

8. The double-gate four-rod unloading structure of the roller mill according to claim 1, 2, 3 or 4, characterized in that: The frame is provided with a left longitudinal beam, a right connecting ear of the left longitudinal beam is provided on the right side of the left longitudinal beam, and a left connecting ear of the left longitudinal beam is provided on the left side, the left movable unloading guide gate is hinged on the right connecting ear of the left longitudinal beam, and the left second connecting rod is hinged on the left connecting ear of the left longitudinal beam; the frame is provided with a right longitudinal beam, a right connecting ear of the right longitudinal beam is provided on the right side of the right longitudinal beam, and a left connecting ear of the right longitudinal beam is provided on the left side, the right movable unloading guide gate is hinged on the left connecting ear of the right longitudinal beam, and the right second connecting rod is hinged on the right connecting ear of the right longitudinal beam.

9. The double-gate four-rod material unloading structure of the roller mill according to claim 8 is characterized in that: The left second connecting rod is a bent rod structure bent toward the left longitudinal beam, and the right second connecting rod is a bent rod structure bent toward the right longitudinal beam.

10. The double-gate four-rod material unloading structure of the roller mill according to claim 8 is characterized in that: The left longitudinal beam includes a left longitudinal flat tube, an upper left longitudinal strip fixed on the upper surface of the left longitudinal flat tube, and a lower left longitudinal strip fixed on the lower surface of the left longitudinal flat tube, and the left connecting ear of the left longitudinal rod portion is simultaneously connected to the left longitudinal flat tube, the upper left longitudinal strip, and the lower left longitudinal strip; the right longitudinal beam includes a right longitudinal flat tube, an upper right longitudinal strip fixed on the upper surface of the right longitudinal flat tube, and a lower right longitudinal strip fixed on the lower surface of the right longitudinal flat tube, and the right connecting ear of the right longitudinal rod portion is simultaneously connected to the right longitudinal flat tube, the upper right longitudinal strip, and the lower right longitudinal strip.

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