Wood chipper

Abstract

The present application provides a wood crusher. The wood crusher includes a machine body, a feeding hopper, a crushing mechanism, a driving device and a screen. Since the machine body includes a first frame and a second frame, the first frame is connected to the second frame, the first frame is provided with a feeding chamber and a first avoidance chamber that are connected, the second frame is provided with a second avoidance chamber, the second avoidance chamber and the first avoidance chamber are connected to form a crushing chamber, a first fixed knife is provided inside the first frame, when the crushing tool in the crushing chamber rotates with the rotating cylinder to form a moving knife, the wood to be crushed is collided and sheared between the moving knife and the first fixed knife, and since the screen is arranged on the inner wall of the second frame, a second fixed knife is arranged on the side of the screen close to the crushing tool, when the crushing tool in the crushing chamber rotates with the rotating cylinder to form a moving knife, the wood to be crushed is collided and sheared between the moving knife and the second fixed knife, thereby greatly improving the crushing efficiency and increasing the crushing output.

Description

Technical Field

[0001] The invention relates to the technical field of solid waste treatment, in particular to a wood crusher. Background Art

[0002] A grinder is a device used to crush rod-shaped or granular materials. Its working principle is to install a shaft in a cylindrical or nearly cylindrical grinder casing, evenly distribute blades in the axial direction of the shaft, and use a motor to drive the shaft to rotate to complete the crushing of the material in the grinder.

[0003] At present, wood is mostly crushed by a crushing tool type crusher. The wood to be crushed enters the crushing chamber of the crusher through the feed port, and is crushed by the high-speed hammering and collision of the crushing tool of the crusher. The crushed fine wood chips are discharged from the crusher through the crusher screen. However, the existing crushers have the problems of low crushing efficiency and low crushing output. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a wood crusher with high crushing efficiency and high crushing output.

[0005] The objective of the present invention is achieved through the following technical solutions:

[0006] A wood crusher, comprising:

[0007] The machine body comprises a first frame body and a second frame body, the first frame body is connected to the second frame body, the first frame body is provided with a feeding cavity and a first avoidance cavity which are connected to each other, the second frame body is provided with a second avoidance cavity, the second avoidance cavity and the first avoidance cavity are connected to form a crushing cavity, and a first fixed knife is provided inside the first frame body;

[0008] A feeding hopper, the feeding hopper is connected to the first frame, the feeding hopper is provided with a material placement cavity, and the material placement cavity is connected with the crushing cavity through the feeding cavity;

[0009] The pulverizing mechanism comprises a rotating cylinder and a pulverizing tool. The rotating cylinder is located in the pulverizing chamber and is rotatably connected to the machine body. The pulverizing tool is arranged on the outer peripheral wall of the rotating cylinder.

[0010] A driving device, wherein the driving device is arranged on the machine body, a power output end of the driving device is connected to the rotating cylinder, and the driving device is used to drive the rotating cylinder to rotate relative to the machine body;

[0011] The screen is arranged on the inner wall of the second frame, and the screen comprises a plurality of screen monomers, which are sequentially stacked and connected so that a step-shaped second fixed knife is formed at the connection between two adjacent screen monomers, and each of the screen monomers is provided with a plurality of screen holes.

[0012] In one embodiment, the first frame and the second frame are detachably connected.

[0013] In one embodiment, the feeding hopper is provided with a feeding port and an inlet, the inlet is provided on one side of the feeding hopper and is respectively connected with the feeding chamber and the loading chamber, the feeding port is provided on the other side of the feeding hopper and is connected with the loading chamber, and the feeding direction of the feeding port is perpendicular to the discharging direction of the inlet.

[0014] In one embodiment, the pulverizing mechanism further includes a fastening assembly, and the pulverizing tool is connected to the rotating cylinder via the fastening assembly.

[0015] In one embodiment, the fastening assembly includes a bolt and a nut, a tool holder is provided on the outer peripheral wall of the rotating cylinder, the tool holder is provided with a first through hole, and a second through hole is provided at one end of the crushing tool, the bolt is sequentially passed through the first through hole, the second through hole and the nut, and the crushing tool is fixed to the tool holder by rotating the nut.

[0016] In one embodiment, the screen is detachably connected to the second frame.

[0017] In one embodiment, the screen is arc-shaped, and the curvature of the screen is the same as the movement trajectory of the crushing tool.

[0018] In one embodiment, it further includes a frame, the frame is connected to the second frame body, the second frame body is provided with a discharge port connected to the crushing chamber, and the frame is provided with a receiving chamber, and the receiving chamber is connected to the discharge port.

[0019] In one of the embodiments, a discharging device is further included. The discharging device is disposed through the accommodating cavity. The discharging device is disposed corresponding to the discharging port. The discharging device is used to discharge the crushed wood.

[0020] In one of the embodiments, a dust removal bag is further included, and the dust removal bag is connected to the discharging device.

[0021] Compared with the prior art, the present invention has at least the following advantages:

[0022] 1. Since the body of the wood crusher of the present invention includes a first frame and a second frame, the first frame is connected to the second frame, the first frame is provided with a connected feeding chamber and a first avoidance chamber, the second frame is provided with a second avoidance chamber, the second avoidance chamber and the first avoidance chamber are connected to form a crushing chamber, and a first fixed knife is arranged inside the first frame. When the crushing tool in the crushing chamber rotates with the rotating cylinder to form a moving knife, the wood to be crushed is collided and sheared between the moving knife and the first fixed knife, thereby greatly improving the crushing efficiency and increasing the crushing output.

[0023] 2. Since the screen of the wood crusher of the present invention is arranged on the inner wall of the second frame, the screen includes a plurality of screen monomers, which are sequentially superimposed and connected, so that the connection between two adjacent screen monomers forms a stepped second fixed knife, and each screen monomer is provided with a plurality of screen holes. When the crushing cutter in the crushing chamber rotates with the rotating cylinder to form a moving knife, the wood to be crushed is impacted and sheared between the moving knife and the second fixed knife, thereby further improving the crushing efficiency, increasing the crushing output, making the wood crushing more thorough, and preventing the wood from being blocked in the screen holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 A schematic structural diagram of a wood crusher according to an embodiment;

[0026] Figure 2 for Figure 1 A structural schematic diagram of the wood crusher from another perspective;

[0027] Figure 3 for Figure 1 A structural schematic diagram of the wood crusher from another perspective;

[0028] Figure 4 for Figure 1 A partial schematic diagram of a wood crusher is shown;

[0029] Figure 5 for Figure 1 Schematic diagram of the structure of the screen of the wood crusher shown. DETAILED DESCRIPTION

[0030] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0031] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0033] like Figure 1 and Figure 2As shown, a wood crusher 10 of an embodiment includes a body 100, a feeding hopper 200, a crushing mechanism 300, a driving device 400 and a screen 500. The body 100 includes a first frame 110 and a second frame 120, and the first frame 110 is connected to the second frame 120. The first frame 110 is provided with a feeding cavity 112 and a first avoidance cavity 114 that are connected to each other, and the second frame 120 is provided with a second avoidance cavity 122, and the second avoidance cavity 122 and the first avoidance cavity 114 are connected to form a crushing cavity. A first fixed knife 1120 is provided inside the first frame 110. The feeding hopper 200 is connected to the first frame 110, and is provided with a feeding chamber 212, and the feeding chamber 212 is connected to the crushing chamber through the feeding chamber 112; the crushing mechanism 300 includes a rotating cylinder 310 and a crushing tool 320, the rotating cylinder 310 is located in the crushing chamber and is rotatably connected to the machine body 100, and the crushing tool 320 is arranged on the outer peripheral wall of the rotating cylinder 310. The driving device 400 is arranged on the body 100, and the power output end of the driving device 400 is connected to the rotating cylinder 310, and the driving device 400 is used to drive the rotating cylinder 310 to rotate relative to the body 100; the screen 500 is arranged on the inner wall of the second frame 120, and the screen 500 includes a plurality of screen monomers 510, and the plurality of screen monomers 510 are stacked and connected in sequence so that the connection between two adjacent screen monomers 510 forms a stepped second fixed knife, and each screen monomer 510 is provided with a plurality of screen holes 512.

[0034] The above-mentioned wood crusher 10 includes a first frame body 110 and a second frame body 120. The first frame body 110 is connected to the second frame body 120. The first frame body 110 is provided with a connected feeding chamber 112 and a first avoidance chamber 114. The second frame body 120 is provided with a second avoidance chamber 122. The second avoidance chamber 122 and the first avoidance chamber 114 are connected to form a crushing chamber. A first fixed knife 1120 is provided inside the first frame body 110. When the crushing tool 320 in the crushing chamber rotates with the rotating cylinder 310 to form a moving knife, the wood to be crushed is collided and sheared between the moving knife and the first fixed knife 1120, thereby greatly improving the crushing efficiency and increasing the crushing output. Furthermore, since the screen 500 of the wood crusher of the present application is arranged on the inner wall of the second frame 120, the screen 500 includes a plurality of screen monomers 510, and the plurality of screen monomers 510 are sequentially superimposed and connected, so that the connection between two adjacent screen monomers 510 forms a stepped second fixed knife, and each screen monomer 510 is provided with a plurality of screen holes 512. When the crushing cutter in the crushing chamber rotates with the rotating cylinder to form a moving knife, the wood to be crushed is impacted and sheared between the moving knife and the second fixed knife, thereby further improving the crushing efficiency, increasing the crushing output, making the wood crushing more thorough, and preventing the wood from being blocked in the screen hole 512.

[0035] In one embodiment, the first frame 110 and the second frame 120 are detachably connected. It is understandable that the first frame 110 is connected to the second frame 120, the first frame 110 is provided with a connected feed chamber 112 and a first avoidance chamber 114, the second frame 120 is provided with a second avoidance chamber 122, the second avoidance chamber 122 and the first avoidance chamber 114 are connected to form a crushing chamber, and a crushing mechanism 300 is provided in the crushing chamber. When the crushing mechanism 300 runs for a period of time, some debris is likely to accumulate in the crushing chamber. If it is not cleaned in time, it is easy to cause the device to be blocked or stuck. In this embodiment, the first frame 110 and the second frame 120 are detachably connected, so that the first frame 110 can be easily removed from the second frame 120, thereby facilitating the cleaning operation in the crushing chamber. In addition, the detachable connection between the first frame 110 and the second frame 120 can make the installation of the wood crusher more convenient.

[0036] like Figure 1 and Figure 4 As shown, in one embodiment, the first frame body 110 includes a first arc plate 1120, a second arc plate 1130, a first frame plate 1140 and a second frame plate 1150, the first frame plate 1140 is connected to the first arc plate 1120, the second frame plate 1150 is connected to the second arc plate 1130, the first arc plate 1120 is also connected to the second arc plate 1130 to form a avoidance cavity 114, the first frame plate 1140 is also connected to the second frame plate 1150 to form a feed cavity 112 connected to the avoidance cavity 114; the first arc plate 1120 is formed with a first stepped protrusion, and the second arc plate 1130 is formed with a second stepped protrusion. In this embodiment, since the first frame includes the first arc plate 1120, the second arc plate, the first frame plate 1140 and the second frame plate 1150, the first frame plate 1140 is connected to the first arc plate 1120, the second frame plate 1150 is connected to the second arc plate, the first arc plate 1120 is also connected to the second arc plate to form the avoidance cavity 114, and the first frame plate 1140 is also connected to the second frame plate 1150 to form the feed cavity 112 connected to the avoidance cavity 114; the first arc plate 1120 is formed with a step-shaped first protrusion, and the step edge of the first protrusion forms a natural first fixed knife. The second arc plate is formed with a step-shaped second protrusion, and the step edge of the second protrusion forms a natural second fixed knife. The pulverizing tool that rotates when the rotor in the pulverizing moving knife assembly is the moving knife. When the wood pulverizing device is in operation, the wood is continuously impacted and sheared between the moving knife and the first fixed knife and the second fixed knife, thereby greatly improving the pulverizing efficiency, increasing the pulverizing output, and making the wood pulverized more thoroughly.

[0037] In one embodiment, the first arc plate 1120 includes a plurality of first connecting plates 1120a, the plurality of first connecting plates 1120a are sequentially stacked and connected, and a step-shaped first protrusion is formed at the connection between two adjacent first connecting plates 1120a; the second arc plate 1130 includes a plurality of second connecting plates 1130a, the plurality of second connecting plates 1130a are sequentially stacked and connected, and a step-shaped second protrusion is formed at the connection between two adjacent second connecting plates 1130a. In this embodiment, the plurality of first connecting plates 1120a are more than two first connecting plates 1120a, and the plurality of second connecting plates 1130a are more than two second connecting plates 1130a. Since the plurality of first connecting plates 1120a are sequentially stacked and connected, a step-shaped first protrusion is formed at the connection between two adjacent first connecting plates 1120a, so that the first arc plate 1120 can more conveniently form a step-shaped first protrusion, saving materials, and making the first arc plate 1120 with the first protrusion more convenient to process and assemble. Similarly, since multiple second connecting plates 1130a are stacked and connected in sequence, a step-shaped second protrusion is formed at the connection between two adjacent second connecting plates 1130a, so that the second arc plate 1130 can more conveniently form a step-shaped second protrusion, saving materials and making the processing and assembly of the second arc plate 1130 with the second protrusion more convenient.

[0038] Further, each first connecting plate 1120a and each second connecting plate 1130a are straight plates. In the present embodiment, each first connecting plate 1120a and each second connecting plate 1130a are straight plates, both sides of which are plane and parallel to each other. Since the first arc plate 1120 includes a plurality of first connecting plates 1120a, the plurality of first connecting plates 1120a are sequentially stacked and connected, and the straight plates can make the processing and welding of the first arc plate 1120 more convenient. Similarly, since the second arc plate 1130 includes a plurality of second connecting plates 1130a, the plurality of second connecting plates 1130a are sequentially stacked and connected, and the straight plates can make the processing and welding of the second arc plate 1130 more convenient.

[0039] like Figure 1 and Figure 4As shown, further, in order to improve the stability and safety of feeding, in one embodiment, the first frame plate 1140 includes two first fixed plates, and the two first fixed plates are connected to form a first preset angle, and the first preset angle is 90 degrees to 180 degrees. It can be understood that the first arc plate 110 is connected to the second arc plate 120 to form an avoidance cavity 114, the first frame plate 1140 is connected to the second frame plate 1150 to form a feed cavity 112, and the feed cavity 112 is connected to the feed port, the first frame plate 1140 is connected to the first arc plate 110, and the second frame plate 1150 is connected to the second arc plate 120, so that the feed cavity 112 is connected to the avoidance cavity 114. On the one hand, the avoidance cavity 114 is connected to the blanking cavity 122, which can facilitate the crushing operation of the crushing moving knife assembly 300 on the wood; on the other hand, the avoidance cavity 114 is larger than the feed cavity 112, which can disperse the wood coming from the feed cavity 112, thereby improving the crushing effect of the wood. However, since the avoidance chamber 114 is connected to the material-dropping chamber 122 to form a crushing chamber, and the feeding chamber 112 is connected to the avoidance chamber 114, the hammer in the crushing chamber is likely to throw the wood into the feeding port when rotating at a high speed, thereby affecting the feeding of the wood. In this embodiment, the first frame plate 1140 includes two first fixing plates, and the two first fixing plates are connected to form a first preset angle, and the first preset angle is 120 degrees. In this way, the wood thrown out of the crushing chamber will be blocked by the first frame plate 1140 when passing through the feeding chamber 112, thereby preventing the wood in the crushing chamber from being thrown into the feeding port, thereby improving the stability and safety of the feeding.

[0040] like Figure 1 and Figure 4As shown, in order to improve the crushing efficiency of wood, in one embodiment, the second frame plate 1150 includes two second fixed plates, the two second fixed plates are connected to form a second preset angle, and the second preset angle is 90 degrees to 180 degrees; the two first fixed plates are arranged one by one with the two second fixed plates, and each first fixed plate is parallel to the corresponding second fixed plate. It can be understood that the first frame plate 1140 and the second frame plate 1150 are connected to form a feed chamber 112, and the feed chamber 112 is connected to the feed port, the first frame plate 1140 is connected to the first arc plate 110, and the second frame plate 1150 is connected to the second arc plate 120, so that the feed chamber 112 is connected to the avoidance chamber 114, and the avoidance chamber 114 is connected to the drop chamber 122. That is to say, the wood to be crushed enters the feed chamber 112 from the feed port, and then enters the crushing chamber for crushing operation. After the wood to be crushed enters the crushing chamber, it is easy to concentrate at one point, thereby affecting the crushing efficiency of the wood, and even causing the crushing tool to be stuck by the wood. In this embodiment, the second frame plate 1150 includes two second fixing plates, which are connected to form a second preset angle, and the second preset angle is 120 degrees; the two first fixing plates are arranged in a one-to-one correspondence with the two second fixing plates, and each first fixing plate is parallel to the corresponding second fixing plate. In this way, after the wood to be crushed falls into the feed chamber 112 from the feed port, it will first collide with the second frame plate 1150, so that the wood to be crushed is dispersed and falls into the avoidance chamber 114 more evenly, and then enters the crushing chamber, thereby effectively improving the crushing efficiency of the wood.

[0041] In one embodiment, the edges of the first protrusion 1122 and the second protrusion 1132 are at an angle of 90 degrees. It can be understood that the first arc plate 1120 includes a plurality of first connecting plates 1120a, and the plurality of first connecting plates 1120a are sequentially superimposed and connected, and the connection between two adjacent first connecting plates 1120a forms a stepped first protrusion 1122, and the step edge of the first protrusion 1122 forms a natural first fixed knife. The second arc plate 1130 includes a plurality of second connecting plates 1130a, and the plurality of second connecting plates 1130a are sequentially superimposed and connected, and the connection between two adjacent second connecting plates 1130a forms a stepped second protrusion 1132, and the step edge of the second protrusion 1132 forms a natural second fixed knife. The pulverizing tool that rotates when the rotor in the pulverizing moving knife assembly is the moving knife. When the wood pulverizing device is in operation, the wood is continuously impacted and sheared between the moving knife and the first fixed knife and the second fixed knife, thereby greatly improving the pulverizing efficiency and increasing the pulverizing output. In this embodiment, the edges of the first protrusion 1122 and the second protrusion 1132 are at an angle of 90 degrees, so that when the wood rotates with the crushing tool, it can collide with the first protrusion 1122 and the second protrusion 1132 over the maximum area, thereby improving the crushing efficiency of the wood and crushing the wood more thoroughly.

[0042] like Figure 1 and Figure 4 As shown, in one embodiment, the first arc plate 1120 is provided with a first auxiliary stopper 1160, the first auxiliary stopper 1160 is located in the avoidance cavity 114 and connected to the first arc plate 1120, and the first auxiliary stopper 1160 is arranged toward the circumference of the crushing movable blade assembly 300. The first arc plate 1120 is provided with a first auxiliary stopper 1160, the first auxiliary stopper 1160 is located in the avoidance cavity 114 and connected to the first arc plate 1120, and the first auxiliary stopper 1160 is arranged toward the circumference of the crushing movable blade assembly 300. It can be understood that when the wood crushing device 10 crushes smaller pieces of wood, it is not easy to shear the smaller pieces of wood because the distance between the crushing tool 320 and the first arc plate 1120 is large. In this embodiment, the first arc plate 1120 is provided with a first auxiliary stopper 1160, the first auxiliary stopper 1160 is located in the avoidance cavity 114 and connected to the first arc plate 1120, and the first auxiliary stopper 1160 is arranged toward the circumference of the crushing movable knife assembly 300. The first arc plate 1120 is provided with a first auxiliary stopper 1160, the first auxiliary stopper 1160 is located in the avoidance cavity 114 and connected to the first arc plate 1120, and the first auxiliary stopper 1160 is arranged toward the circumference of the crushing movable knife assembly 300. In this way, a fixed knife closer to the crushing tool 320 than the first protrusion is formed on the first arc plate 1120, and the first auxiliary stopper 1160 is arranged toward the circumference of the crushing movable knife assembly 300, so that the smaller wood passing between the first arc plate 1120 and the crushing tool 320 is further crushed, thereby effectively improving the crushing effect of the wood.

[0043] like Figure 1 and Figure 4 As shown, in one embodiment, the second arc plate 1130 is provided with a second auxiliary stopper 1170, the second auxiliary stopper 1170 is located in the avoidance cavity 114 and connected to the second arc plate 1130, and the second auxiliary stopper 1170 is arranged toward the circumference of the crushing movable blade assembly 300. It can be understood that when the wood crushing device 10 crushes smaller pieces of wood, it is not easy to shear the smaller pieces of wood due to the large spacing between the crushing tool 320 and the second arc plate 1130. In this embodiment, the second arc plate 1130 is provided with a second auxiliary stopper 1170, the second auxiliary stopper 1170 is located in the avoidance cavity 114 and connected to the second arc plate 1130, and the second auxiliary stopper 1170 is arranged toward the circumference of the crushing movable blade assembly 300. In this way, a fixed knife is formed on the second arc plate 1130 which is closer to the crushing tool 320 than the second protrusion, and the second auxiliary stopper 1170 is arranged toward the circumference of the crushing movable knife assembly 300, so that smaller wood passing between the second arc plate 1130 and the crushing tool 320 can be further crushed, thereby effectively improving the crushing effect of the wood.

[0044] like Figure 1 As shown, in one embodiment, the hopper 200 is provided with a feed port 214 and a feed port 216, the feed port 216 is provided on one side of the hopper 200 and is communicated with the feed cavity 112 and the placement cavity 212 respectively, the feed port 214 is provided on the other side of the hopper 200 and is communicated with the placement cavity 212, and the feed direction of the feed port 214 is perpendicular to the discharge direction of the feed port 216, as shown in FIG. Figure 1 As shown, f is the feeding direction. It can be understood that the wood to be crushed enters the feeding chamber 212 of the feeding hopper 200 through the feed port 214, and then enters the crushing chamber through the feed chamber 112 for crushing operation. Due to the centrifugal force of the crushing tool 320, the wood to be crushed added from the front is easily thrown away directly, thereby affecting the feeding and crushing effect. In this embodiment, the feeding hopper 200 is provided with a feed port 214 and a feed port 216, the feed port 216 is opened on one side of the feeding hopper 200 and is respectively connected to the feed chamber 112 and the feeding chamber 212, the feed port 214 is opened on the other side of the feeding hopper 200 and is connected to the feeding chamber 212, and the feeding direction of the feed port 214 is perpendicular to the discharging direction of the feed port 216. Furthermore, a buffer plate 210 is provided between the feed port 214 and the feed inlet 216 , so that the wood to be crushed can slowly slide from the feed port 214 into the feed cavity 112 and be crushed, thereby making the feeding more uniform and stable.

[0045] In one embodiment, the pulverizing mechanism 300 further includes a fastening assembly, and the pulverizing tool 320 is connected to the rotating cylinder 310 through the fastening assembly. It is understandable that as the number of uses increases, the pulverizing tool 320 is prone to wear, and the pulverizing tool 320 needs to be replaced when necessary. In this embodiment, the pulverizing mechanism 300 further includes a fastening assembly, and the pulverizing tool 320 is connected to the rotating cylinder 310 through the fastening assembly, so that the pulverizing tool 320 is more secure during operation. In addition, when the pulverizing tool 320 is worn, the pulverizing tool 320 can be disassembled from the rotating cylinder 310 through the fastening assembly, thereby making the replacement of the pulverizing tool 320 more convenient.

[0046] In one embodiment, the fastening assembly includes a bolt and a nut, a tool holder is provided on the outer peripheral wall of the rotating cylinder, the tool holder is provided with a first through hole, one end of the crushing tool is provided with a second through hole, the bolt is sequentially passed through the first through hole, the second through hole and the nut, and the crushing tool is fixed to the tool holder by rotating the nut. When the tool is replaced, the worn crushing tool 320 can be easily removed from the tool holder by unscrewing the nut from the bolt, thereby making the replacement of the crushing tool 320 more convenient. Furthermore, the fastening assembly also includes a gasket, the gasket is provided with a third through hole, the bolt is sequentially passed through the first through hole, the second through hole, the third through hole and the nut, so that the gasket is fixed between the tool holder and the nut, thereby reducing the wear between the tool holder and the nut, and making the connection between the tool holder and the nut more stable.

[0047] In one embodiment, the screen 500 is detachably connected to the second frame 120. It is understandable that the screen 500 is arranged on the inner wall of the second frame 120, and a second fixed knife is arranged on the side of the screen 500 close to the crushing tool 320. The screen 500 can not only filter the wood, but also when the crushing tool 320 in the crushing chamber rotates with the rotating cylinder 310 to form a moving knife, the wood to be crushed is hit and sheared between the moving knife and the second fixed knife, thereby further improving the crushing efficiency, increasing the crushing output, and making the wood crushing more thorough. In this embodiment, the screen 500 is detachably connected to the second frame 120, which can facilitate the replacement and assembly of the screen 500 on the second frame 120.

[0048] like Figure 1 and Figure 5 As shown, in one embodiment, the screen 500 is arc-shaped, and the curvature of the screen 500 is the same as the motion trajectory of the crushing tool 320. It can be understood that the screen 500 is arranged on the inner wall of the second frame 120, and a second fixed knife is arranged on the side of the screen 500 close to the crushing tool 320. When the crushing tool 320 in the crushing chamber rotates with the rotating cylinder 310 to form a moving knife, the wood to be crushed is impacted and sheared between the moving knife and the second fixed knife, thereby further improving the crushing efficiency. In this embodiment, the screen 500 is arc-shaped, and the curvature of the screen 500 is the same as the motion trajectory of the crushing tool 320, thereby further increasing the contact area between the wood and the second fixed knife, further improving the crushing efficiency, increasing the crushing output, and making the wood crush more thorough.

[0049] like Figure 1 , Figure 4 and Figure 5As shown, in one embodiment, the screen monomer 510 is a straight screen plate, and both sides of the straight screen plate are planes and parallel to each other. It can be understood that by connecting two adjacent screen monomers 510, multiple screen monomers 510 can be conveniently combined and connected into an arc as needed, so that the shape of the screen is adapted to the movement trajectory of the hammer knife, so that the collision and shearing of the wood between the hammer knife and the fixed knife are more sufficient, and then the wood is crushed more thoroughly, greatly improving the crushing efficiency of the wood and increasing the crushing output. In this embodiment, the screen monomer 510 is a straight screen plate, and both sides of the straight screen plate are planes and parallel to each other. A plurality of the screen monomers 510 are sequentially stacked and connected, so that a step-shaped second fixed knife is formed at the connection between two adjacent screen monomers 510, and the crushing knife of the crushing knife 320 forms a moving knife as the rotor rotates. In this way, the wood can continuously collide and shear between the moving knife and the second fixed knife, thereby greatly improving the crushing efficiency of the wood and increasing the crushing output. At the same time, after being sheared by the moving knife, the wood continues to collide and shear on the fixed knife, so that the wood can be crushed more thoroughly, thereby effectively avoiding blockage of the screen holes 512 in the screen plate.

[0050] In one embodiment, two adjacent screen monomers 510 are welded, that is, any two adjacent screen monomers 510 are fixed by welding. It is understandable that the screen 500 includes a plurality of screen monomers 510, and the plurality of screen monomers 510 are sequentially superimposed and connected, so that the connection between the two adjacent screen monomers 510 forms a stepped second fixed knife. In this embodiment, two adjacent screen monomers 510 are welded, and the plurality of screen monomers 510 can be conveniently combined and welded into an arc as needed, so that the shape of the screen is adapted to the motion trajectory of the crushing tool 320, so that the collision and shearing of the wood between the crushing tool 320 and the fixed knife are more sufficient, and then the wood is crushed more thoroughly, which greatly improves the crushing efficiency of the wood and increases the crushing output. In addition, since the screen 500 is composed of a plurality of flat screen plates superimposed, the use of welding can improve the integrity of the screen 500 and save welding materials.

[0051] In one embodiment, the gap between the crushing tool and each screen monomer 510 is 5 mm to 10 mm. It is understandable that in order to prevent the crushing tool from colliding with the screen 500, the crushing tool of the crusher is usually designed to have a certain gap from the surface of the screen 500. However, if the gap between the crushing tool 320 and the surface of the screen 500 is large, thinner wood is very easy to be brought into the surface of the screen 500 by the high-speed crushing tool 320. Since the gap between the crushing tool 320 and the surface of the screen 500 is too large, the thinner wood may not only fail to be crushed, but may even get stuck on the surface of the screen 500, causing material jamming and machine blocking. In this embodiment, the gap between the crushing tool 320 and each screen monomer 510 is 5 mm, which enables the crushing tool 320 to effectively shear thinner wood. At the same time, a step-shaped protrusion is formed at the connection between the straight screen plates, and the step edge of the protrusion forms a natural fixed knife, so that the wood sheared by the crushing tool 320 is collided and sheared again at the fixed knife before falling into the screen hole 512 of the screen 500, so that the wood is crushed more thoroughly, thereby effectively preventing the wood from getting stuck on the surface of the screen 500.

[0052] In one embodiment, the thickness of each screen monomer 510 is 5 mm to 20 mm. It is understandable that a plurality of screen monomers 510 are welded to form the screen 500, and the connection between the screen monomers 510 forms a stepped protrusion, and the step edge of the protrusion forms a natural fixed knife. The wood to be crushed constantly collides with the fixed knife under the rotation of the crushing tool, so that the screen 500 wears faster. In this embodiment, the thickness of the screen monomer 510 is 15 mm, which can effectively improve the wear resistance of the screen 500, and at the same time increase the contact area between the wood to be crushed and the protrusion, thereby further improving the crushing efficiency of the wood and increasing the crushing output.

[0053] like Figures 1 to 3 As shown, in one embodiment, the wood crusher also includes a frame 600, which is connected to the second frame body 120. The second frame body 120 is provided with a discharge port connected to the crushing chamber. The frame 600 is provided with a receiving chamber, which is connected to the discharge port. The discharge port is used to discharge the crushed wood in the crushing chamber. The receiving chamber is connected to the discharge port, so as to facilitate further centralized processing of the wood discharged from the discharge port.

[0054] like Figure 1 and Figure 4As shown, in one embodiment, the second frame 120 includes a main frame 1220, a first bracket 1230 and a second bracket 1240, the first bracket 1230 is connected to one end of the main frame 1220, the second bracket 1240 is connected to one end of the main frame 1220 away from the first bracket 1230, the main frame 1220, the first bracket 1230 and the second bracket 1240 are connected to form a accommodating cavity, and the flat screen plate is arranged in the accommodating cavity.

[0055] like Figure 4 As shown, further, the discharge port is further provided with a first baffle 1250 and a second baffle 1260, which are respectively arranged on both sides of the discharge port, the first baffle 1240 is connected to the first bracket, and the first baffle 1250 and the first bracket 1230 form an angle of 30 to 60 degrees, and the second baffle 1260 is connected to the second bracket 1240, and the second baffle 1250 and the second bracket form an angle of 30 to 60 degrees. In this way, when the crushed wood leaks out of the sieve hole 512 of the screen 500, the first baffle 1250 and the second baffle 1260 collide with the wood, causing the wood to slide to the middle of the discharge port, which is conducive to collecting the crushed wood.

[0056] like Figures 1 to 3 As shown, in one embodiment, the wood crusher 10 further includes a discharging device 700, which is disposed in the accommodating cavity, and the discharging device 700 is disposed corresponding to the discharging port. The discharging device 700 is used to discharge the crushed wood, so that the crushed wood is discharged through the discharging device 700. In this embodiment, the discharging device 700 is an auger, that is, a spiral conveying device. When the spiral shaft rotates, due to the gravity of the wood and the friction between the wood and the wall of the trough body, the wood moves forward along the bottom of the trough of the spiral conveying device under the push of the blades. The spiral conveying device can realize sealed conveying, so as to prevent the crushed wood from flying into the external environment during the discharging process. At the same time, the wood can be further ground during the conveying process, thereby effectively improving the degree of crushing of the wood.

[0057] When the existing wood is crushed and discharged, wood chips are often directly sprayed into the environment, and large dust is often generated during operation. At the same time, when the surrounding wind is strong, the wood often cannot be piled together and needs to be collected manually. In order to effectively remove dust in the air and facilitate the collection of wood after crushing. In one embodiment, the wood crusher 10 also includes a dust removal bag, which is connected to the discharge device 700. Through the action of the blower and the control of the wind force of the blower, the granular wood cannot be blown up, and the dust-containing air is continuously blown to the dust removal bag by the blower. The air is discharged from the wood crusher 10 after dust removal by the bag, and the wood is discharged through the discharge port of the spiral conveyor. Furthermore, the wind generated by the blower is hot air, so that the wood can be dried while removing dust, which is convenient for further processing of the wood.

[0058] In one embodiment, the protrusion is arranged toward the circumference of the rotor. It is understandable that the crushing tool of the crushing tool assembly 320 forms a moving knife as the rotor rotates, and the step edge of the protrusion forms a natural fixed knife. The wood can continuously collide and shear between the moving knife and the fixed knife, thereby greatly improving the crushing efficiency of the wood and increasing the crushing output. In this embodiment, the protrusion is arranged toward the circumference of the rotor, so that the collision area of ​​the wood between the moving knife and the fixed knife can be maximized, thereby further improving the crushing efficiency of the wood, increasing the crushing output, and making the degree of crushing of the wood higher.

[0059] Compared with the prior art, the present invention has at least the following advantages:

[0060] 1. Since the body of the wood crusher of the present invention includes a first frame and a second frame, the first frame is connected to the second frame, the first frame is provided with a connected feeding chamber and a first avoidance chamber, the second frame is provided with a second avoidance chamber, the second avoidance chamber and the first avoidance chamber are connected to form a crushing chamber, and a first fixed knife is arranged inside the first frame. When the crushing tool in the crushing chamber rotates with the rotating cylinder to form a moving knife, the wood to be crushed is collided and sheared between the moving knife and the first fixed knife, thereby greatly improving the crushing efficiency and increasing the crushing output.

[0061] 2. Since the screen of the wood crusher of the present invention is arranged on the inner wall of the second frame, the screen includes a plurality of screen monomers, which are sequentially superimposed and connected, so that the connection between two adjacent screen monomers forms a stepped second fixed knife, and each screen monomer is provided with a plurality of screen holes. When the crushing cutter in the crushing chamber rotates with the rotating cylinder to form a moving knife, the wood to be crushed is impacted and sheared between the moving knife and the second fixed knife, thereby further improving the crushing efficiency, increasing the crushing output, making the wood crushing more thorough, and preventing the wood from being blocked in the screen holes.

[0062] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A wood crusher, characterized in that: include: The machine body comprises a first frame body and a second frame body, the first frame body is connected to the second frame body, the first frame body is provided with a feeding cavity and a first avoidance cavity which are connected to each other, the second frame body is provided with a second avoidance cavity, the second avoidance cavity and the first avoidance cavity are connected to form a crushing cavity, and a first fixed knife is provided inside the first frame body; A feeding hopper, the feeding hopper is connected to the first frame, the feeding hopper is provided with a material placement cavity, and the material placement cavity is connected with the crushing cavity through the feeding cavity; A pulverizing mechanism, the pulverizing mechanism comprising a rotating cylinder and a pulverizing cutter, the rotating cylinder being located in the pulverizing chamber and being rotatably connected to the machine body, the pulverizing cutter being arranged on the outer peripheral wall of the rotating cylinder; the pulverizing mechanism further comprising a fastening assembly, the pulverizing cutter being connected to the rotating cylinder via the fastening assembly; A driving device, wherein the driving device is arranged on the machine body, a power output end of the driving device is connected to the rotating cylinder, and the driving device is used to drive the rotating cylinder to rotate relative to the machine body; The screen is arranged on the inner wall of the second frame, and the screen includes a plurality of screen monomers, and the plurality of screen monomers are sequentially stacked and connected so that the connection between two adjacent screen monomers forms a stepped second fixed knife, and each of the screen monomers is provided with a plurality of sieve holes, and the screen monomer is a straight screen plate, and both sides of the straight screen plate are flat and parallel to each other.

2. The wood crusher according to claim 1, characterized in that: The first frame body and the second frame body are detachably connected.

3. The wood crusher according to claim 1, characterized in that: The feeding hopper is provided with a feeding port and an inlet. The inlet is provided on one side of the feeding hopper and is respectively connected with the feeding cavity and the placing cavity. The feeding port is provided on the other side of the feeding hopper and is connected with the placing cavity. The feeding direction of the feeding port is perpendicular to the discharging direction of the inlet.

4. The wood crusher according to claim 1, characterized in that: The fastening assembly includes bolts and nuts. A tool holder is provided on the outer peripheral wall of the rotating cylinder. The tool holder is provided with a first through hole. A second through hole is provided at one end of the crushing tool. The bolts are sequentially passed through the first through hole, the second through hole and the nut. The crushing tool is fixed to the tool holder by rotating the nut.

5. The wood crusher according to claim 1, characterized in that: The screen is detachably connected to the second frame.

6. The wood crusher according to claim 1, characterized in that: The screen is arc-shaped, and the curvature of the screen is the same as the movement trajectory of the crushing tool.

7. The wood crusher according to any one of claims 1 to 6, characterized in that: It also includes a frame, which is connected to the second frame body, the second frame body is provided with a discharge port connected to the crushing chamber, and the frame is provided with a receiving chamber, which is connected to the discharge port.

8. The wood crusher according to claim 7, characterized in that: It also includes a discharging device, which is arranged through the accommodating cavity and is arranged corresponding to the discharging port. The discharging device is used to discharge the crushed wood.

9. The wood crusher according to claim 8, characterized in that: It also includes a dust removal bag, which is connected to the discharging device.

Images