An energy-saving and efficient jaw crushing equipment for construction solid waste disposal

Abstract

The present invention relates to the technical field of crushers, and discloses an energy-saving and efficient jaw crushing equipment for disposing of construction solid waste, comprising a crusher main body, wherein a movable jaw plate and a fixed jaw plate are respectively installed inside the crusher main body, and a stress dispersion component is arranged inside the crusher main body, wherein the stress dispersion component comprises a plurality of wave plates installed on the outer surfaces of the movable jaw plate and the fixed jaw plate, and a plurality of crushing teeth installed on the outer surfaces of the wave plates. Since the construction solid waste enters the crusher from the upper part, the larger fluctuation of the wave plate can make the movable jaw plate generate a larger impact force on the large pieces of construction solid waste that have just entered in the initial stage, while the smaller fluctuation degree and height of the wave plate at the upper part of the fixed jaw plate can form a special crushing space when cooperating with the movable jaw plate, and enable the construction solid waste to be guided to a suitable crushing position when pushed and squeezed by the passive jaw plate, thereby avoiding the situation that the construction solid waste cannot smoothly enter the crushing process due to the overly complicated structure of the upper part of the movable jaw plate.

Description

Technical Field

[0001] The invention relates to the technical field of crushers, and in particular to an energy-saving and efficient jaw crushing device for disposing of construction solid waste. Background Art

[0002] Jaw crusher is a kind of crushing equipment widely used in mining, building materials, road construction and other industries. It is mainly used to crush large pieces of solid construction waste into smaller particles. Its working principle is to squeeze, split and bend the solid construction waste through the relative movement of the moving jaw and the static jaw, so as to achieve the crushing effect.

[0003] However, there are still some problems with the existing jaw crushers: First, in the existing jaw crushers, the surface of the jaw plate often adopts a convex strip structure. When processing conventional construction solid waste, the convex strip structure can increase the friction between the jaw plate and the construction solid waste, which helps to stably clamp the construction solid waste in the crushing chamber.

[0004] However, when using a jaw crusher to process construction solid waste, from the perspective of the characteristics of the construction solid waste itself, the shapes of its blocks are extremely irregular and the sizes vary greatly. Specifically, when a large concrete block with protruding edges enters the crushing chamber, it is difficult to find a suitable position to match the convex bars. During the entry process, it is easily blocked by the convex bars and then stuck between the jaw plates. In addition, the blocks in the construction solid waste have an uneven texture and contain pores, steel bars and other structures, which also increases the difficulty of crushing.

[0005] During the crushing process, construction solid waste first enters from the upper part of the crushing chamber. The upper space is relatively large, and the initial state of construction solid waste when entering is relatively messy. Large pieces of construction solid waste are more likely to interfere with the convex bars and get stuck here. Since the jaw crusher squeezes construction solid waste by moving the movable jaw, the stroke of the lower movable jaw is the largest. According to the principle of force action, under the same pressure, the smaller the action area, the greater the pressure, so the crushing force in the lower part is stronger; in contrast, the crushing force in other parts such as the middle of the jaw plate is relatively weak, which leads to the fact that if large pieces of construction solid waste are stuck in these parts, it will be more difficult to crush them. When large pieces of construction solid waste are stuck in the crushing chamber and cannot be crushed further, the power system of the crusher will continue to output energy to try to continue crushing, but the stuck large pieces of solid waste hinder the normal crushing action, which makes the crusher bear too much load. In addition, excessive load will cause the motor of the crusher to overload, which will cause the motor current to rise sharply, which will cause the motor winding to heat up seriously, cause damage to the insulation layer, reduce the service life of the motor, and even directly burn the motor.

[0006] Finally, since the stuck large pieces of solid waste cannot be crushed normally, the crusher has to stop working for cleaning. Frequent shutdowns for cleaning not only seriously affect the working efficiency of the crusher and increase the maintenance cost of the equipment, but also affect subsequent production processes and cause economic losses.

[0007] Secondly, based on the characteristics of the above-mentioned construction solid waste, it is much more difficult for the crusher to crush it, which leads to a heavier load. When the load is heavy, the bearings of the crusher will be under tremendous pressure and friction, thereby generating excessive heat. Although there is lubricating oil in the bearings to reduce friction and wear and take away heat, when the bearings overheat, the lubricating oil itself will also be heated.

[0008] After the lubricating oil heats up, it cannot form an effective oil film due to the change in viscosity. Under normal circumstances, the oil film formed by the lubricating oil on the bearing surface can separate the metal surface of the bearing to avoid direct contact, thereby reducing friction and wear. Once the oil film cannot be formed, the metal surfaces of the bearing will directly rub against each other, which will not only aggravate the wear of the bearing and shorten the service life of the bearing, but also increase the friction sharply, further increase the load, and form a vicious circle.

[0009] Secondly, overheating can cause the lubricating oil to deteriorate. The deteriorated lubricating oil loses its original lubricating and cooling properties, its chemical properties change, and even produces corrosive substances. These corrosive substances will corrode the metal surface of the bearing, causing corrosion pits on the bearing surface, destroying the precision and structural integrity of the bearing. This will not only affect the normal operation of the crusher, increase maintenance costs and downtime, but also cause safety hazards. For example, sudden damage to the bearing may cause other parts of the crusher to be damaged by impact, and even endanger the safety of the operator. At the same time, due to the deterioration of the lubricating oil, the lubricating oil needs to be replaced more frequently, which undoubtedly increases the time and economic cost required to stop the machine to replace the lubricating oil.

[0010] To this end, the present invention proposes an energy-saving and efficient jaw crushing equipment for disposing of construction solid waste. Summary of the invention

[0011] The purpose of the present invention is to provide an energy-saving and efficient jaw crushing equipment for the disposal of construction solid waste, so as to solve the problems raised in the above-mentioned background technology.

[0012] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an energy-saving and efficient jaw crushing equipment for the disposal of construction solid waste, comprising a crusher main body, wherein a movable jaw plate and a fixed jaw plate are respectively installed inside the crusher main body, and a stress dispersion component is arranged inside the crusher main body, and the stress dispersion component comprises a plurality of wave plates installed on the outer surfaces of the movable jaw plate and the fixed jaw plate, and a plurality of crushing teeth installed on the outer surfaces of the wave plates; the wave plate located on the surface of the movable jaw plate gradually decreases in undulation and height from top to bottom, and the wave plate located on the surface of the fixed jaw plate gradually increases in undulation and height from top to bottom; the crushing teeth are all fixedly connected to the wave crests of the wave plates, and the crushing teeth gradually shrink on the side away from the wave plates, and the edges thereof are rounded.

[0013] Preferably, the wave plates are all linearly and equidistantly arranged and fixedly connected to the outer surfaces of the movable jaw plate and the fixed jaw plate, and the wave plates located on the surfaces of the movable jaw plate and the fixed jaw plate are all staggeredly arranged.

[0014] Preferably, the side of the crushing tooth away from the wave plate is shaped like a quadrangular pyramid, the difference being that the vertices of its four edges all converge at a side farthest from the wave plate, rather than at one point of the traditional quadrangular pyramid vertex.

[0015] Preferably, ball shafts are installed on both sides of the trough of the wave plate, and a pre-screen plate group is installed on the side of the crusher body close to the fixed jaw plate.

[0016] Preferably, the ball shafts are rotatably connected to the outer surface of the wave plate, and the end of the ball shaft away from the wave plate is spirally and equidistantly arranged and fixedly connected with convex balls, and the end of the ball shaft close to the wave plate is provided with a protective shell, and the protective shell is fixedly connected to the outer surface of the wave plate, and the protective shell is used to prevent stains from invading the connection between the ball shaft and the wave plate.

[0017] Preferably, the pre-screen plate group includes a plurality of baffles, which are linearly and equidistantly arranged and fixedly connected to the fixed jaw plate and the outer surface of the crusher body, the top of the baffle is inclined, and the bottom thereof expands toward the side away from the movable jaw plate.

[0018] Preferably, a bearing box is symmetrically installed in the middle of the crusher body, roller bearings are installed inside the bearing box, a spiral cooling assembly is arranged inside the bearing box, the spiral cooling assembly includes a spiral groove and a sealing shell, the spiral grooves are opened on the inner surface of the bearing box, and the sealing shells are installed on the outside of the spiral grooves.

[0019] Preferably, the spiral groove located in the middle of the inner surface of the bearing box gradually expands.

[0020] Preferably, a sealing rubber ring is installed on the outer side of the spiral groove.

[0021] Preferably, the surface of the bearing box is symmetrically provided with reserved holes, an external circulation module is installed outside the crusher body, and the external circulation module is communicated with the reserved holes.

[0022] Preferably, the external circulation module comprises at least one water pump, one water tank and two connecting pipes, the water pump is installed on the outer surface of the crusher body, the water tank is installed on the outer surface of the water pump, and the two connecting pipes are respectively installed between the water pump and the reserved holes.

[0023] Preferably, an oil filling plug is installed on the top of the bearing box.

[0024] Compared with the prior art, the beneficial effects of the present invention are: 1. Since the construction solid waste enters the crusher from the upper part, the larger fluctuation of the wave plate can make the movable jaw plate produce a larger impact force on the large pieces of construction solid waste that have just entered in the initial stage, and the smaller fluctuation degree and height of the wave plate on the upper part of the fixed jaw plate can form a special crushing space when cooperating with the movable jaw plate, and make the construction solid waste more orderly guided to the appropriate crushing position when pushed and squeezed by the passive jaw plate, avoiding the situation where the construction solid waste is stuck or cannot smoothly enter the crushing process due to the overly complicated structure of the upper part of the movable jaw plate. At the same time, since the stroke of the lower part of the movable jaw plate is the largest, according to the principle of force action, under the same pressure, the smaller the effective area, the greater the pressure, so this setting can make the crushing force of the lower part stronger and more concentrated, which is conducive to more thorough crushing of the construction solid waste after the initial crushing of the upper part.

[0025] In addition, since the crushing teeth are located at the crest of the wave plate, the force can be dispersed to the surrounding through the wave plate. The wave plate is like a force transmission and dispersion structure, which disperses the concentrated stress on the crushing teeth to a larger area, reducing the stress concentration phenomenon at the root of the crushing teeth. At the same time, the side of the crushing teeth away from the wave plate gradually shrinks, and its edges are rounded. This shape allows the crushing teeth to disperse the force more evenly along the contracted side and rounded corners during the crushing process, avoiding excessive concentration of stress at a certain point, thereby extending the service life of the crushing teeth.

[0026] Finally, the presence of the corrugated plate changes the contact mode between the construction solid waste and the jaw plate. When processing construction solid waste, the blocks are irregular in shape and uneven in texture. The ups and downs of the corrugated plate make the contact between the construction solid waste and the jaw plate no longer concentrated on a few points or surfaces, but dispersed in multiple parts of the corrugated plate. In this way, the wear of the jaw plate by the construction solid waste is more uniform, reducing the local excessive wear, especially the wear on the movable jaw plate and the fixed jaw plate, thereby increasing the service life of the jaw plate and reducing the maintenance cost of the equipment.

[0027] The existing jaw crusher with convex stripe structure on the jaw plate surface has many problems when processing construction solid waste, but this crusher avoids these problems by using corrugated plate and crushing tooth structure. The blocks of construction solid waste are irregular, with large size differences and uneven texture. The convex stripe structure can easily cause the construction solid waste to get stuck. However, this structure allows the construction solid waste to enter the crushing chamber smoothly without being blocked and stuck due to mismatch with the structure. It avoids problems such as excessive crusher load, motor overload, motor winding heating, insulation layer damage caused by the jamming of construction solid waste, reduces the number of shutdowns for cleaning, improves work efficiency, reduces maintenance costs, and ensures the normal progress of subsequent production processes.

[0028] Among them: the staggered arrangement of the wave plates can make the construction solid waste receive a more comprehensive and uniform crushing force during the crushing process. When the movable jaw plate moves, the staggered wave plates can squeeze and crush the construction solid waste from different directions, avoiding the crushing blind spots in certain areas, so that the construction solid waste can be crushed more fully. At the same time, the staggered arrangement can also increase the residence time of the construction solid waste in the crushing chamber and improve the crushing effect.

[0029] Among them: since the side of the crushing tooth away from the wave plate is shaped like a quadrangular pyramid, but the vertices of its four edges all converge at the side farthest from the wave plate, this special shape enables the crushing tooth to have better cutting performance when crushing construction solid waste. When the crushing tooth contacts the block-shaped construction solid waste, its edge surface can more effectively disperse the stress, avoid stress concentration at a certain point, and reduce the wear and damage risk of the crushing tooth.

[0030] Among them: during the crushing process, the ball shaft can rotate with the movement of the construction solid waste, and the convex ball can stir and assist in crushing the construction solid waste. For construction solid waste with irregular block shape and uneven texture, the rotation of the ball shaft can make the construction solid waste more fully mixed and turned in the crushing chamber, so that each part of the construction solid waste can better accept the crushing force and improve the uniformity of crushing. The protective shell can prevent stains from invading the connection between the ball shaft and the corrugated plate, thereby extending the service life of the ball shaft.

[0031] Among them: During the crushing process, the pre-screen plate group can perform preliminary screening of the construction solid waste. For smaller construction solid waste, they can be blocked by the pre-screen plate group to avoid excessive crushing when entering the crusher, reducing the waste of crushing small construction solid waste and saving energy. At the same time, the inclination direction of the bottom of the pre-screen plate group is consistent with the forward direction of the moving jaw plate, which can provide a certain support force for the fixed jaw plate, thereby enhancing the stability of the crusher.

[0032] 2. When water flows into the spiral groove to form a spiral water flow, the spiral water flow can effectively exchange heat with the lubricating oil in the sealed shell. When the crusher is processing construction solid waste, the bearing generates too much heat due to the heavy load. Under normal circumstances, it is difficult for the lubricating oil to effectively take away the heat. The spiral cooling component enables water to continuously absorb the heat of the lubricating oil, thereby reducing the temperature of the lubricating oil, which helps the lubricating oil maintain a suitable viscosity and form an effective oil film on the bearing surface. The effective oil film can separate the metal surface of the bearing to avoid direct contact, thereby greatly reducing friction and wear, and preventing the direct friction of the metal surface of the bearing due to the inability to form an oil film due to overheating of the lubricating oil.

[0033] Among them: In the prior art, an oil guide groove is designed on the bearing surface. When the middle part of the spiral groove expands, water in this area can more efficiently exchange heat with the lubricating oil. Due to the existence of the oil guide groove, the distribution and flow path of the lubricating oil on the bearing surface are specific. Water in the expanded area of ​​the middle part of the spiral groove can more accurately exchange heat with the lubricating oil guided by the oil guide groove and concentrated in a specific area, thereby improving the cooling efficiency and being able to more effectively reduce the temperature of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a front three-dimensional schematic diagram of the main structure of the present invention.

[0035] Figure 2 It is a rear perspective schematic diagram of the main structure of the present invention.

[0036] Figure 3 It is a sectional stereoscopic schematic diagram of the main structure of the present invention.

[0037] Figure 4 It is a top view and a cross-sectional perspective schematic diagram of the main structure of the present invention.

[0038] Figure 5 It is a partially cutaway stereoscopic schematic diagram of the pre-screening plate assembly in the present invention.

[0039] Figure 6 It is a three-dimensional schematic diagram of the corrugated plate in the present invention.

[0040] Figure 7 For the present invention Figure 6 Enlarged three-dimensional schematic diagram of the structure at point A in the middle.

[0041] Figure 8 It is a partially cutaway stereoscopic schematic diagram of the bearing box in the present invention.

[0042] Fig. 9 It is a partially cutaway stereoscopic schematic diagram of the spiral cooling assembly in the present invention.

[0043] Fig.10 For the present invention Fig. 9Enlarged three-dimensional schematic diagram of the structure at point B in the middle.

[0044] In the figure: 11, crusher body; 12, movable jaw plate; 13, fixed jaw plate; 14, bearing box; 15, roller bearing.

[0045] 2. Stress dispersion assembly; 21. Corrugated plate; 22. Crushing teeth; 23. Ball shaft; 24. Pre-screening plate assembly.

[0046] 3. Spiral cooling assembly; 31. Spiral groove; 32. Sealing shell. DETAILED DESCRIPTION

[0047] 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.

[0048] It should be noted that the crusher body 11, the movable jaw plate 12, and the fixed jaw plate 13 are all existing technologies, so their specific principles will not be described in detail later. Similarly, the water pump only provides liquid circulation function for the inside of the spiral groove 31, and the oil filling plug only provides the function of providing lubricating oil to the inside of the bearing box 14. The external feeding equipment only provides the function of feeding construction solid waste into the crusher body 11. Therefore, in view of the versatility of the above structure, its specific principles will not be described in detail later.

[0049] Example 1, please refer to Figures 1 to 6 As shown, an energy-saving and efficient jaw crushing equipment for the disposal of construction solid waste includes a crusher body 11, wherein a movable jaw plate 12 and a fixed jaw plate 13 are respectively installed inside the crusher body 11, and a stress dispersion component 2 is arranged inside the crusher body 11, and the stress dispersion component 2 includes a plurality of wave plates 21 installed on the outer surfaces of the movable jaw plate 12 and the fixed jaw plate 13, and a plurality of crushing teeth 22 installed on the outer surfaces of the wave plates 21; the wave plates 21 located on the surface of the movable jaw plate 12 have a gradually decreasing degree of fluctuation and height from top to bottom, and the wave plates 21 located on the surface of the fixed jaw plate 13 have a gradually increasing degree of fluctuation and height from top to bottom; the crushing teeth 22 are all fixedly connected to the crest of the wave plates 21, and the crushing teeth 22 gradually shrink on the side away from the wave plates 21, and the edges thereof are rounded.

[0050] Please refer to Figures 5 to 7As shown, ball shafts 23 are installed on both sides of the trough of the wave plate 21, and a pre-screen plate group 24 is installed on the side of the crusher body 11 close to the fixed jaw plate 13. The ball shafts 23 are rotatably connected to the outer surface of the wave plate 21, and the ends of the ball shafts 23 away from the wave plate 21 are fixedly connected with convex balls arranged in a spiral and equidistant manner. A protective shell is provided at the end of the ball shaft 23 close to the wave plate 21, and the protective shell is fixedly connected to the outer surface of the wave plate 21. The protective shell is used to prevent stains from invading the connection between the ball shaft 23 and the wave plate 21.

[0051] It should be noted that the wave plates 21 are all linearly equidistantly arranged and fixedly connected to the outer surfaces of the movable jaw plate 12 and the fixed jaw plate 13. At the same time, the wave plates 21 located on the surfaces of the movable jaw plate 12 and the fixed jaw plate 13 are all staggeredly arranged. The side of the crushing teeth 22 away from the wave plates 21 is shaped like a quadrangular pyramid. The difference is that the vertices of its four edges all converge at a side farthest from the wave plates 21, rather than a point at the vertex of a traditional quadrangular pyramid. The pre-screen plate group 24 includes a plurality of baffles, which are linearly equidistantly arranged and fixedly connected to the outer surfaces of the fixed jaw plate 13 and the crusher body 11. The top of the baffle is inclined, and the bottom thereof expands toward the side away from the movable jaw plate 12. An external feeding device is installed on the side of the crusher body 11 close to the fixed jaw plate 13.

[0052] Specifically, when the operator starts the crusher body 11, the crusher body 11 drives the movable jaw plate 12 to move back and forth continuously toward the side close to the fixed jaw plate 13, and at the same time starts the external feeding equipment. The construction solid waste enters the crusher body 11 through the external feeding equipment and starts the crushing process.

[0053] First, the wave plate 21 on the surface of the movable jaw plate 12 has a larger undulation and height at the top, while the wave plate 21 on the surface of the fixed jaw plate 13 has a smaller undulation and height at the top. Therefore, when the movable jaw plate 12 starts to reciprocate, the wave plate 21 with a larger undulation and height on the top of the movable jaw plate 12 can exert a larger initial crushing force on the incoming construction solid waste. This is because the larger undulation and height make the space between the wave plates 21 change more dramatically when the movable jaw plate 12 approaches the fixed jaw plate 13, and the construction solid waste is subjected to strong squeezing and shearing force in this area, while the wave plate 21 with a smaller undulation and height on the top of the fixed jaw plate 13 plays a role of buffering and cooperation.

[0054] On the one hand, it avoids the formation of an overly narrow crushing space in the initial stage of crushing, preventing the construction solid waste from being excessively concentrated at the top and unable to move down effectively; on the other hand, the smaller ups and downs can enable the construction solid waste to enter the next crushing stage more smoothly after the initial crushing.

[0055] During the reciprocating motion of the movable jaw plate 12, the crushing tooth 22 plays an important role. Since it is fixed at the crest of the wave plate 21, and the side away from the wave plate 21 is shaped like a quadrangular pyramid, but the vertices of the four edges all meet at a side farthest from the wave plate 21, and the edges are rounded, so when the movable jaw plate 12 moves toward the fixed jaw plate 13, the crushing tooth 22 will penetrate into the construction solid waste. Since the vertices of the four edges meet at a side, this structure concentrates the stress near this side. Compared with the traditional sharp-end crushing tooth 22, during the crushing process, the force of the construction solid waste on the crushing tooth 22 is mainly concentrated in the area near the side, rather than at the tip like the sharp end. According to the principle of force decomposition and synthesis, this stress distribution method makes the reaction force of the crushing tooth 22 in all directions relatively dispersed, so that compared with the traditional sharp-end crushing tooth 22, the overall reaction force is smaller, thereby extending its service life. In addition, the rounded corner treatment can also reduce the friction coefficient between the crushing tooth 22 and the construction solid waste, reduce energy loss, and improve crushing efficiency.

[0056] With the continuous movement of the movable jaw plate 12, the construction solid waste gradually moves from the top to the bottom. At this time, the fluctuation degree and height of the wave plate 21 at the bottom of the movable jaw plate 12 gradually decrease, while the fluctuation degree and height of the wave plate 21 at the bottom of the fixed jaw plate 13 gradually increase. Specifically, the smaller wave plate 21 at the bottom of the movable jaw plate 12 enables the movable jaw plate 12 to squeeze the construction solid waste more accurately and concentratedly when it is close to the fixed jaw plate 13. Since the construction solid waste has been crushed at the top and middle parts during the crushing process and is relatively small when it reaches the bottom, the smaller wave plate 21 can better adapt to the crushing needs of such smaller construction solid waste and further crush the construction solid waste into smaller particles, while the larger wave plate 21 at the bottom of the fixed jaw plate 13 provides a gradually shrinking crushing space.

[0057] With the reciprocating motion of the movable jaw plate 12, the solid construction waste is continuously squeezed between the movable jaw plate 12 and the fixed jaw plate 13. The larger wave plate 21 at the bottom of the fixed jaw plate 13 allows the solid construction waste to be squeezed and ground in all directions in this area, ensuring that the solid construction waste is fully crushed. At the same time, this arrangement is also conducive to the smooth discharge of the crushed solid construction waste, because the larger wave plate 21 forms a relatively open outlet channel at the bottom, so that the crushed solid construction waste can smoothly leave the crushing area under the push of the movable jaw plate 12.

[0058] It should be noted that the wave plates 21 on the movable jaw plate 12 and the fixed jaw plate 13 are arranged in a staggered manner, and the staggered arrangement causes the construction solid waste to be subjected to more comprehensive and complex forces during the crushing process.

[0059] When the movable jaw plate 12 approaches the fixed jaw plate 13, the staggered wave plates 21 break the single-direction force transmission mode, and the construction solid waste will be subjected to extrusion and shear forces from different directions and angles. For example, at a certain moment, a larger piece of construction solid waste will be squeezed from one direction by the wave plates 21 in a certain area of ​​the movable jaw plate 12, and from another direction by the wave plates 21 in the staggered area of ​​the fixed jaw plate 13. This multi-directional force can effectively destroy the internal structure of the construction solid waste, making it easier to be broken into smaller particles.

[0060] Secondly, during the crushing process, the construction solid waste needs to be constantly moved and rolled between the movable jaw plate 12 and the fixed jaw plate 13 to ensure that each part can be fully crushed. The staggered wave plates 21 are like irregular "guide channels" set in the crusher body 11, so that the construction solid waste can naturally change the flow direction along these staggered structures while being subjected to the crushing force, thereby avoiding the accumulation of materials in a certain area. If it is arranged in parallel, the material is easy to form a relatively fixed flow path between the parallel plates, which may cause material accumulation in some areas, while the material in other areas flows too fast and cannot be fully crushed.

[0061] Finally, when the movable jaw plate 12 reciprocates, the staggered wave plates 21 allow stress to be propagated in the construction solid waste in a more dispersed manner. In the case of parallel arrangement, stress may be concentrated at certain specific contact points or areas, resulting in excessive crushing of the construction solid waste in these areas, while materials in other areas are not fully crushed due to insufficient stress. The staggered arrangement avoids this stress concentration, allowing the construction solid waste as a whole to evenly withstand the crushing force, thereby improving the efficiency and quality of crushing.

[0062] It should be noted that the pre-screening plate group 24 plays an important role in the feeding process of construction solid waste. When the construction solid waste is fed into the crusher body 11 , it will first pass through the pre-screening plate group 24 .

[0063] Due to the inclination of the top of the pre-screen plate group 24, the construction solid waste will roll on its surface into the crusher body 11. During this process, small particles in the construction solid waste will fall directly through the gaps between the baffles. This design prevents small particles that do not need to be crushed from entering the crusher body 11. If these small particles enter the crusher, they will move in the crushing chamber together with the large particles during the reciprocating motion of the movable jaw plate 12 and the fixed jaw plate 13, which will not only cause unnecessary wear, but also reduce the crushing power, because small particles will disperse the crushing force in the crushing chamber, so that the force that should have been concentrated on crushing large particles is partially consumed in the ineffective movement of small particles.

[0064] In addition, since the bottom of the baffle is inclined and expanded, and its direction matches the moving direction of the movable jaw plate 12, when the crusher body 11 is working, the movable jaw plate 12 continuously reciprocates, which will generate a certain impact force and lateral force on the fixed jaw plate 13. Due to the special shape and position relationship of the bottom of the baffle, when the movable jaw plate 12 moves, the pre-screen plate group 24 can provide support for the fixed jaw plate 13. This support force can prevent the fixed jaw plate 13 from excessive displacement or deformation when it is subjected to the force of the movable jaw plate 12, thereby ensuring the stability of the fixed jaw plate 13 during the crushing process, thereby ensuring the normal operation of the entire crusher body 11, improving the crushing quality and extending the service life of the equipment.

[0065] Example 2, based on Example 1, please refer to Figures 8 to 10 As shown, a bearing box 14 is symmetrically installed in the middle of the crusher body 11, and a roller bearing 15 is installed inside the bearing box 14. A spiral cooling assembly 3 is arranged in the bearing box 14, and the spiral cooling assembly 3 includes a spiral groove 31 and a sealing shell 32. The spiral grooves 31 are opened on the inner surface of the bearing box 14, and the sealing shells 32 are installed on the outer side of the spiral grooves 31.

[0066] It should be noted that the spiral groove 31 located in the middle of the inner surface of the bearing box 14 gradually expands, a sealing rubber ring is installed on the outside of the spiral groove 31, reserved holes are symmetrically opened on the surface of the bearing box 14, an external circulation module is installed on the outside of the crusher body 11, the external circulation module is connected with the reserved holes, the external circulation module includes at least one water pump, a water tank and two connecting pipes, the water pump is installed on the outer surface of the crusher body 11, the water tank is installed on the outer surface of the water pump, the two connecting pipes are respectively installed between the water pump and the reserved holes, water is stored in the water tank, an oil filling plug is installed on the top of the bearing box 14, and an oil guide groove is opened on the outer center edge of the roller bearing 15.

[0067] Specifically, before using the crusher body 11, the operator needs to open the oil filling plug on the top of the bearing box 14 and inject a proper amount of lubricating oil into it. After the oil filling is completed, put the oil filling plug back in place and then start the crusher body 11. During the operation of the crusher body 11, the roller bearing 15 will gradually heat up. This is because when the roller bearing 15 supports the reciprocating motion of the movable jaw plate 12 and other components, there is rolling friction between the roller and the inner and outer rings of the bearing. This friction will continuously consume mechanical energy and convert it into heat energy. The increase in the temperature of the roller bearing 15 will reduce the viscosity of the lubricating oil. After the viscosity of the lubricating oil is reduced, the carrying capacity of the oil film will decrease, which will increase the possibility of direct contact between the various components of the roller bearing 15, thereby aggravating wear and shortening the service life of the roller bearing 15.

[0068] When the roller bearing 15 starts to heat up, the operator starts the external circulation module. At this time, the water pump starts to work and transports the water stored in the water tank to the inside of the spiral groove 31 through the connecting pipe and the reserved hole on the surface of the bearing box 14 that penetrates to the inside of the spiral groove 31.

[0069] Since water enters the spiral groove 31 from the reserved hole, under the guidance of the spiral groove 31 and the restriction of the sealing shell 32, the water will flow along the track of the spiral groove 31 and form a spiral fluid.

[0070] First, when water flows in the spiral groove 31, it can efficiently cool the bearing box 14, because the water will continuously absorb the heat emitted by the bearing box 14 and the roller bearing 15 inside it during the flow, thereby taking away the heat and reducing the temperature of the roller bearing 15. Secondly, the spiral flow method can ensure uniform temperature. The spiral flow can make the water more evenly distributed in various areas of the bearing box 14, thereby ensuring that all parts of the entire roller bearing 15 can be cooled more evenly, which can avoid the occurrence of local overheating and further improve the service life and working stability of the roller bearing 15.

[0071] During the cooling process, without the sealing effect of the sealing shell 32, water will seep out of the spiral groove 31, which will not only fail to effectively cool the roller bearing 15, but also cause damage to other components of the crusher body 11, such as causing short circuits in electrical components or causing rust and corrosion of other components.

[0072] It should be noted that the spiral groove 31 located in the middle of the inner surface of the bearing box 14 gradually expands. This design has a clever corresponding relationship with the oil guide groove opened on the outer center edge of the roller bearing 15. When the roller bearing 15 is running, the lubricating oil will flow in the oil guide groove driven by the roller. The expansion structure in the middle of the spiral groove 31 can make the cooling water flow form a special flow field when passing through this place. This flow field is conducive to forming a more effective cooling effect in the central area of ​​the roller bearing 15. On the one hand, the expanded spiral groove 31 can make the water flow velocity change in this area, forming a local vortex or turbulence Phenomenon, this change in water flow state can enhance the heat exchange efficiency between water and the bearing box 14, so as to better absorb the heat in the central area of ​​the roller bearing 15; on the other hand, since the oil guide groove is located at the outer central edge of the roller bearing 15, the expansion structure in the middle of the spiral groove 31 can make the heat exchange between the cooling water flow and the vicinity of the oil guide groove more sufficient, which can further improve the overall cooling effect of the roller bearing 15 while ensuring the normal working temperature of the lubricating oil, and ensure that the roller bearing 15 runs stably within a suitable temperature range, thereby improving the working efficiency and reliability of the crusher body 11.

[0073] 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 "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0074] 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. An energy-saving and efficient jaw crushing device for treating construction solid waste, comprising a crusher body (11), wherein a movable jaw plate (12) and a fixed jaw plate (13) are respectively installed inside the crusher body (11), characterized in that: A stress dispersion component (2) is arranged inside the crusher body (11), and the stress dispersion component (2) comprises a plurality of wave plates (21) mounted on the outer surfaces of the movable jaw plate (12) and the fixed jaw plate (13), and a plurality of crushing teeth (22) mounted on the outer surfaces of the wave plates (21); The undulation degree and height of the wave plate (21) located on the surface of the movable jaw plate (12) gradually decrease from top to bottom, and the undulation degree and height of the wave plate (21) located on the surface of the fixed jaw plate (13) gradually increase from top to bottom; The crushing teeth (22) are all fixedly connected to the wave crest of the wave plate (21); the crushing teeth (22) gradually shrink on the side away from the wave plate (21), and their edges are rounded; Ball shafts (23) are installed on both sides of the trough of the wave plate (21), and a pre-screen plate group (24) is installed on the side of the crusher body (11) close to the fixed jaw plate (13); The ball shafts (23) are all rotatably connected to the outer surface of the wave plate (21); the ends of the ball shafts (23) away from the wave plate (21) are all fixedly connected with convex balls arranged in a spiral manner and at equal intervals; the ends of the ball shafts (23) close to the wave plate (21) are provided with a protective shell, the protective shell is fixedly connected to the outer surface of the wave plate (21), and the protective shell is used to prevent dirt from invading the connection between the ball shaft (23) and the wave plate (21); The wave plates (21) are all linearly and equidistantly arranged and fixedly connected to the outer surfaces of the movable jaw plate (12) and the fixed jaw plate (13), and the wave plates (21) located on the surfaces of the movable jaw plate (12) and the fixed jaw plate (13) are all arranged in a staggered manner; The pre-screen plate group (24) comprises a plurality of baffles, which are linearly arranged at equal intervals and fixedly connected to the fixed jaw plate (13) and the outer surface of the crusher body (11); the tops of the baffles are inclined, and the bottoms thereof expand toward a side away from the movable jaw plate (12).

2. The energy-saving and efficient jaw crushing equipment for construction solid waste disposal according to claim 1 is characterized by: The side of the crushing tooth (22) away from the wave plate (21) is shaped like a quadrangular pyramid.

3. The energy-saving and efficient jaw crushing equipment for construction solid waste disposal according to claim 1 is characterized by: A bearing box (14) is symmetrically mounted in the middle of the crusher body (11), a roller bearing (15) is mounted inside the bearing box (14), a spiral cooling assembly (3) is arranged inside the bearing box (14), the spiral cooling assembly (3) comprises a spiral groove (31) and a sealing shell (32), the spiral groove (31) is opened on the inner surface of the bearing box (14), and the sealing shell (32) is mounted on the outer side of the spiral groove (31).

4. The energy-saving and high-efficiency jaw crushing equipment for construction solid waste disposal according to claim 3 is characterized by: The spiral groove (31) located in the middle of the inner surface of the bearing box (14) gradually expands.

5. The energy-saving and high-efficiency jaw crushing equipment for construction solid waste disposal according to claim 3 is characterized by: A sealing rubber ring is installed on the outer side of the spiral groove (31).

6. The energy-saving and high-efficiency jaw crushing equipment for construction solid waste disposal according to claim 3 is characterized by: The surface of the bearing box (14) is symmetrically provided with reserved holes, and an external circulation module is installed outside the crusher body (11), and the external circulation module is communicated with the reserved holes.

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