A PVC profile crushing device

Abstract

The invention relates to the technical field of PVC crushing, and specifically provides a PVC profile crushing device, the crushing device comprising: a shell, a vortex partition is arranged in the shell to form a vortex channel, a crushing chamber is arranged at the center of the vortex partition, an arc-shaped separation sheet is arranged in the port of the vortex channel close to the inner wall of the shell to form two separation channels, the separation channel located on the outer side is provided with a feed outlet at the lower end of the shell, the separation channel located on the inner side is provided with an air outlet at the upper end of the shell, and the upper end of the shell is also provided with a feed inlet; a crushing component rotatably connected to the crushing chamber, the crushing component comprises a rotating shaft and a plurality of crushing sheets arranged divergently in the circumferential direction, the crushing sheets are eccentrically connected to the outer side, and a plurality of serrated crushing blades are arranged on the side of the crushing sheet close to the feed inlet; a motor, used for driving the crushing component to rotate; the invention has a smaller volume and lower energy consumption.

Description

Technical Field

[0001] The invention relates to the technical field of PVC crushing, in particular to a PVC profile crushing device. Background Art

[0002] During the processing of PVC profiles, there will be profiles with poor quality, such as incorrect drilling positions and cutting lengths. These profiles with poor quality need to be crushed for secondary use. In order to facilitate transportation, traditional PVC crushing devices need to crush PVC profiles into granules.

[0003] The current PVC profile crushing device includes a crushing structure (for crushing), a cyclone separation structure (for separating particles and air), and a negative pressure generator (for establishing negative pressure in the cyclone separation structure to absorb PVC particles in the crushing structure), which makes the PVC crushing device occupy a large area. At the same time, due to the provision of multiple power structures, the crushing device consumes a lot of energy. Therefore, the present application proposes a PVC profile crushing device. Summary of the invention

[0004] The purpose of the present invention is to provide a PVC profile crushing device to solve the problem of high energy consumption of the current PVC profile crushing device.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A PVC profile crushing device, the crushing device comprising:

[0007] A shell, wherein a vortex partition is arranged in the shell to form a vortex channel, a crushing chamber is arranged at the center of the vortex partition, and an arc-shaped separation sheet is arranged in the port of the vortex channel close to the inner wall of the shell to form two separation channels, wherein the separation channel located on the outer side is provided with a feed outlet at the lower end of the shell, and the separation channel located on the inner side is provided with an air outlet at the upper end of the shell, and the upper end of the shell is also provided with a feed inlet;

[0008] A crushing assembly rotatably connected to the crushing chamber, the crushing assembly comprising a rotating shaft and a plurality of crushing pieces divergently arranged in the circumferential direction, the crushing pieces eccentrically connected to the outer side to form a turbine blade structure, and a plurality of serrated crushing blades are arranged on one side of the crushing piece close to the feed inlet;

[0009] A motor, wherein the output end of the motor is fixedly connected to the rotating shaft to drive the crushing assembly to rotate.

[0010] Furthermore, a plurality of the vortex baffles are provided, and the plurality of the vortex baffles are evenly distributed around the axis of the outer shell in the circumferential direction, and the plurality of vortex baffles are arranged in a form of being nested with each other.

[0011] Furthermore, an arc-shaped baffle is also provided in the separation channel, and the arc-shaped baffle is located at the feed inlet and the air outlet of the separation channel.

[0012] Furthermore, the pulverizing device further comprises:

[0013] The upper shell is a cylindrical shape with an opening, an air outlet cavity is formed on the outer shell of the upper shell, the air outlet is located in the air outlet cavity, and a first air outlet pipe is fixedly connected to the upper shell.

[0014] Furthermore, a feed pipe is fixedly connected to the upper shell, and the pulverizing device further comprises:

[0015] The feeding assembly is used to drive the PVC profile into the crushing chamber.

[0016] Further, the feed pipe is tiltedly arranged on the upper shell, and the feed assembly is provided with two groups, and the two groups of the feed assemblies are respectively fixed to the two sides of the feed pipe, and the feed assembly includes:

[0017] A feed shell, the feed shell is fixed to the feed pipe, and the feed shell is communicated with the feed pipe;

[0018] The feed impeller is an impeller-shaped structure, comprising a feed shaft and flexible blades, the feed shaft is rotatably connected to the feed shell, the flexible blades are fixed to the feed shaft in a divergent shape, and when feeding, the PVC profile is inserted between the two flexible blades.

[0019] Furthermore, the pulverizing device further comprises:

[0020] The lower shell is fixedly connected to the outer shell to form a material discharge cavity, and the material discharge port is located in the material discharge cavity.

[0021] Furthermore, the lower shell includes a straight section and a tapered section, the straight section and the tapered section are fixedly connected, and a discharge port is provided at the small end of the tapered section.

[0022] Furthermore, the inner side of the lower shell is also provided with a core tube fixedly connected to the outer shell, and the core tube is also connected to the outside through the second air outlet pipe. The pulverizing device also includes

[0023] The discharge assembly is used to intermittently open the discharge port to perform secondary separation of the crushed particles and air.

[0024] Further, the discharge port is a cylindrical structure with openings at both ends, one end of the discharge port is closed by a sheet-shaped plug, and a fan-shaped material port is provided on the sheet-shaped plug. The discharge assembly includes:

[0025] A reducer, wherein the reducer is fixedly connected to the core tube, and an input end of the reducer is fixedly connected to the pulverizing assembly;

[0026] A transmission shaft, the transmission shaft being fixedly connected to an output end of the reducer;

[0027] The rotating baffle is a disc structure, and a fan-shaped notch is arranged on the rotating baffle. The rotating baffle is fixedly connected to the end of the transmission shaft away from the reducer to rotate with the crushing assembly. When the rotating baffle rotates, the fan-shaped notch and the fan-shaped material opening overlap intermittently.

[0028] In summary, the present invention has the following beneficial effects compared with the prior art:

[0029] The PVC profile crushing device disclosed in the embodiment of the present invention drives a crushing component with a turbine blade structure to rotate through a motor, and the crushing component can simultaneously crush the PVC profile and drive the crushed particles to perform circular motion in a vortex channel in the shell. Under the action of centrifugal force, the particles and air are separated in the vortex channel and discharged from the discharge port and the feed port respectively. Compared with the traditional crushing device, the present invention has a smaller volume and lower energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of a PVC profile crushing device disclosed in an embodiment of the present invention.

[0031] Figure 2 It is a front view of the PVC profile crushing device disclosed in an embodiment of the present invention.

[0032] Figure 3 for Figure 2 Sectional view of AA.

[0033] Figure 4 for Figure 3 Cross-sectional view of BB.

[0034] Figure 5 for Figure 2 Cross-sectional view of CC.

[0035] Figure 6 The present invention is a schematic diagram of the connection between the middle shell, the partition and the lower shell of the PVC profile crushing device disclosed in the embodiment of the present invention.

[0036] Figure 7 The present invention is a schematic diagram of the connection between the middle shell and the crushing assembly of the PVC profile crushing device disclosed in the embodiment of the present invention.

[0037] Figure 8 It is a schematic diagram of the lower shell and the internal structure of the PVC profile crushing device disclosed in an embodiment of the present invention.

[0038] Reference numerals:

[0039] 100, shell; 110, middle shell; 111, crushing chamber; 112, feed port; 120, partition; 121, air outlet; 130, upper shell; 131, air outlet chamber; 132, feed port; 133, first air outlet pipe; 140, lower shell; 141, feed chamber; 142, straight section; 143, conical section; 144, core tube; 145, second air outlet pipe; 146, feed port; 150, feed pipe; 160, vortex partition Plate; 170, separation piece; 180, arc-shaped baffle; 190, motor seat; 200, crushing assembly; 210, crushing piece; 211, crushing blade; 220, rotating shaft; 230, strength plate; 300, motor; 400, unloading assembly; 410, rotating baffle; 420, transmission shaft; 430, reducer; 500, feeding assembly; 510, feeding impeller; 511, feeding shaft; 512, flexible blade; 520, feeding shell. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0041] Figures 1 to 7 As shown, an embodiment of the present invention provides a PVC profile crushing device, the crushing device comprising:

[0042] A housing 100, wherein a vortex partition 160 is disposed in the housing 100 to form a vortex channel, a crushing chamber 111 is disposed at the center of the vortex partition 160, and an arc-shaped separation sheet 170 is disposed in a port of the vortex channel close to the inner wall of the housing 100 to form two separation channels, wherein the separation channel located on the outer side is provided with a feed opening 112 at the lower end of the housing 100, and the separation channel located on the inner side is provided with an air outlet 121 at the upper end of the housing 100, and the upper end of the housing 100 is also provided with a feed opening 132;

[0043] A crushing assembly 200 rotatably connected to the crushing chamber 111, the crushing assembly 200 includes a rotating shaft 220 and a plurality of crushing pieces 210 divergently arranged in the circumferential direction, the crushing pieces 210 are eccentrically connected to the outer side of the rotating shaft 220 to form a turbine blade structure, and a plurality of serrated crushing blades 211 are arranged on one side of the crushing piece 210 close to the feed port 132;

[0044] The motor 300 has an output end fixedly connected to the rotating shaft 220 to drive the crushing assembly 200 to rotate.

[0045] In this embodiment, when the PVC profile is crushed, the motor 300 is started, and the motor 300 drives the crushing assembly 200 to rotate, and one end of the PVC profile is fed into the crushing chamber 111 from the feed port 132. When the crushing assembly 200 rotates, the crushing blade 211 gradually crushes the PVC into particles. At the same time, the crushing assembly 200 also draws external air into the crushing chamber 111 through the feed port 132. The air entering the crushing chamber 111 is transported to the vortex channel by the crushing assembly 200. At the same time, the crushing assembly 200 brings The particles after dynamic crushing rotate and are carried by the air into the vortex channel. The air and the crushed particles make circular motion in the vortex channel. The crushed particles adhere to the inner wall of the vortex channel near the outside under the action of centrifugal force, and the air is concentrated in the area near the inside of the vortex channel. When the air carries the crushed particles to the separation sheet 170, the separation sheet 170 separates the particles and part of the air into the separation channel near the outside and is discharged from the discharge port 112. The remaining air enters the separation channel near the inside and is discharged from the feed port 132, thereby completing the crushing and separation work. In the present invention, the crushing structure and separation structure of the PVC profile are integrated in the housing 100, so that the crushing device is small in size and occupies a small space. At the same time, the crushing and separation work is achieved by only one power source (motor 300), saving energy consumption.

[0046] The PVC profile crushing device disclosed in the embodiment of the present invention drives the crushing component 200 with a turbine blade structure to rotate through the motor 300. The crushing component 200 can simultaneously crush the PVC profile and drive the crushed particles to perform circular motion in the vortex channel in the shell 100. Under the action of centrifugal force, the particles and air are separated in the vortex channel and discharged from the discharge port 112 and the feed port 132 respectively. Compared with the traditional crushing device, the present invention has a smaller size and lower energy consumption.

[0047] Specifically, in this embodiment, if Figure 1 and Figure 3 As shown, the housing 100 includes a middle shell 110 and a partition 120 covering the upper end of the middle shell 110, the middle shell 110 is a cylindrical structure with an opening at one end, the partition 120 is a disc-shaped structure, the partition 120 is fixedly connected to the middle shell 110 by bolts, the vortex partition 160 and the separation sheet 170 are fixedly connected to the middle shell 110 by welding, the feed port 112 is a through-hole structure provided at the bottom of the middle shell 110, and the air outlet 121 is a through-hole structure provided on the partition 120;

[0048] In this embodiment, the middle shell 110 and the partition 120 are fixedly connected by bolts. The outer sides of the middle shell 110 and the partition 120 are both provided with cylindrical protrusions for installing bolts. The middle shell 110 is provided with threaded holes, and the partition 120 is provided with through holes. The bolts pass through the through holes and are fixed in the threaded holes. The middle shell 110 and the partition 120 form a flat, cylindrical structure.

[0049] As a preferred implementation in this embodiment, an upper shell 130 is further provided on the partition 120. The upper shell 130 is in the shape of a cylinder with an opening at one end. The upper shell 130 is fixed to the partition 120 by bolts. The upper shell 130 covers the partition 120 to form an air outlet cavity 131. The air outlet 121 is located in the air outlet cavity 131, so that the air discharged from the air outlet 121 is located in the air outlet cavity 131. The upper shell 130 is also fixedly connected to a first air outlet pipe 133 by welding.

[0050] The air discharged through the air outlet 121 enters the upper housing 130 and is discharged from the first air outlet pipe 133. In some examples, the first air outlet pipe 133 may be connected to an exhaust gas treatment device for treating dust generated by crushing.

[0051] In this embodiment, the upper shell 130 is fixedly connected to the middle shell 110 by bolts, and the bolts used to fix the middle shell 110 and the partition 120 pass through the through-hole structure located on the outer side of the upper shell 130;

[0052] The feed port 132 is opened on the partition 120 and the upper shell 130. The feed port 132 is not connected to the interior of the upper shell 130. It is isolated by the retaining edge structure located on the partition 120 and the upper shell 130. The retaining edge structures located on the partition 120 and the upper shell 130 are mutually nested to form a feed channel.

[0053] Preferably, the upper shell body 130 is also fixedly connected to a motor base 190 by bolts or welding, and the motor 300 is fixedly connected to the motor base 190 by bolts. The motor base 190 is a bracket structure or a cylindrical structure, and the output shaft of the motor 300 passes through the motor base 190 and is fixedly connected to the rotating shaft 220 by a coupling.

[0054] As a preferred implementation in this embodiment, Figure 1 and Figure 3As shown, the housing 100 further includes a lower housing 140, which is fixedly connected to one end of the middle housing 110 away from the partition 120 by bolts, and a material discharge cavity 141 is provided in the lower housing 140, and particles discharged from the material discharge port 112 enter the material discharge cavity 141;

[0055] The lower shell 140 includes a straight section 142 and a conical section 143, and the straight section 142 and the conical section 143 are fixedly connected by welding. The small end of the conical section 143 is provided with a discharge port 146, and the particles discharged through the discharge port 112 enter the discharge chamber 141 and are discharged from the discharge port 146. When the vortex baffle 160 is provided in plurality, the discharge port 112 is provided in plurality, and the particles discharged from the plurality of the discharge ports 112 are collected by providing the lower shell 140, and are discharged from the discharge port 146 in a concentrated manner.

[0056] like Figure 7 As shown, the vortex partition 160 is formed by bending a long strip sheet structure, the vortex partition 160 is fixedly connected to the middle shell 110 by welding, and one end located on the outside of the vortex partition 160 is fixed to the inner wall of the middle shell 110, the separation sheet 170 is formed by bending a long strip sheet structure, and one end and the bottom side of the separation sheet 170 are fixedly connected to the middle shell 110 by welding, and the separation sheet 170 separates the part of the vortex channel close to the outside into two separation channels. Under the action of centrifugal force, the crushed particles and part of the air enter the separation channel located on the outside, and the remaining air enters the separation channel located on the inside;

[0057] Preferably, the vortex baffles 160 are provided in plurality, and the plurality of vortex baffles 160 are evenly distributed around the axis of the middle shell 110 in the circumferential direction, and the plurality of vortex baffles 160 are provided in a mutually nested form, so that the inner and outer walls of the vortex channel are composed of adjacent vortex baffles 160;

[0058] Preferably, an arc-shaped baffle 180 is also provided in the separation channel, and the arc-shaped baffle 180 is used to block the crushed particles to prevent the crushed particles from being stuck between the vortex baffle 160 and the separation sheet 170. The arc-shaped baffle 180 is arc-shaped, and the two sides of the arc-shaped baffle 180 are fixedly connected to the vortex baffle 160 and the separation sheet 170 by welding. The radius of the curved surface of the arc-shaped baffle 180 is larger than the crushed particles. The arc-shaped baffle 180 is welded at the feed port 112 and the air outlet 121, and the particles and air intercepted by the arc-shaped baffle 180 are discharged from the feed port 112 and the air outlet 121 respectively.

[0059] like Figure 7As shown, the crushing piece 210 is a long strip sheet structure, a plurality of the crushing pieces 210 are connected by a strength plate 230, the crushing piece 210 is fixed to the strength plate 230 in a divergent shape, the crushing piece 210 and the strength plate 230 are fixedly connected by welding, the strength plate 230 is a disc structure, the crushing pieces 210 are arranged on the strength plate 230 in a divergent shape, the rotating shaft 220 is fixedly connected to the strength plate 230 by welding, when the rotating shaft 220 rotates, the rotating shaft 220 drives the crushing piece 210 to rotate through the strength plate 230, and when the crushing piece 210 rotates, the crushing blade 211 crushes the PVC profile;

[0060] The rotating shaft 220 is fixedly connected to the center of the divergent structure formed by the crushing pieces 210 by welding, and the rotating shaft 220 passes through the partition 120 and the upper shell 130 and is fixedly connected to the output shaft of the motor 300 by a coupling. The partition 120 is also provided with an isolation sleeve in the upper shell 130 to isolate the rotating shaft 220, thereby preventing the upper shell 130 from communicating with the crushing chamber 111;

[0061] It should be noted that the crushing blades 211 and the sawtooth grooves formed by the crushing blades 211 are distributed on the same circumference, so as to prevent the formation of grooves on the PVC profile and affect the crushing efficiency.

[0062] As a preferred implementation in this embodiment, Figure 3 and Figure 8 As shown, a core tube 144 is further provided inside the lower shell 140, and the core tube 144 is fixedly connected to the middle shell 110. The core tube 144 is also connected to the outside through a second air outlet pipe 145. The pulverizing device also includes:

[0063] The material discharge assembly 400 is used to intermittently open the discharge port 146 to perform secondary separation of the crushed particles and air;

[0064] Specifically, in the present embodiment, the discharge port 146 is a cylindrical structure with openings at both ends, one end of the discharge port 146 is closed by a sheet-like plug, a fan-shaped material port is provided on the sheet-like plug, the unloading assembly 400 includes a rotating baffle 410, a transmission shaft 420 and a reducer 430, the reducer 430 is fixedly connected to the core tube 144, the input end of the reducer 430 is fixedly connected to the crushing assembly 200, the output end of the reducer 430 is connected to the rotating baffle 410 through the transmission shaft 420, the rotating baffle 410 is a disc structure, a fan-shaped notch is provided on the rotating baffle 410, when the crushing assembly 200 rotates, the crushing assembly 200 drives the rotating baffle 410 to rotate slowly, when the rotating baffle 410 rotates, the fan-shaped notch and the fan-shaped material port overlap intermittently;

[0065] When crushing the PVC profile, the crushing component 200 rotates and drives the transmission shaft 420 to rotate slowly through the reducer 430. When the transmission shaft 420 rotates, the fan-shaped notch on the transmission shaft 420 and the fan-shaped material opening on the sheet plug gradually overlap. When the two do not overlap, the crushed particles fall to the bottom of the lower shell 140, and the air is discharged from the core tube 144 and the second air outlet pipe 145. When the two have overlapping parts, the particles located at the bottom of the lower shell 140 are discharged from the overlapping part of the two. At the same time, the air entering the lower shell 140 can also squeeze the crushed particles to make them discharge smoothly.

[0066] As a preferred implementation in this embodiment, a vortex partition plate 160 is fixedly connected to the upper shell 130, and the pulverizing device further includes:

[0067] The feeding assembly 500 is used to drive the PVC profile into the grinding chamber 111;

[0068] Specifically, the feed pipe 150 is tiltedly arranged on the upper shell 130, and the feed assembly 500 is provided with two groups, and the two groups of the feed assembly 500 are respectively fixed to the two sides of the feed pipe 150, and the feed assembly 500 includes a feed impeller 510 and a feed shell 520, and the feed shell 520 is fixed to the feed pipe 150, and the feed shell 520 is communicated with the feed pipe 150, and the feed impeller 510 is an impeller-shaped structure, and the feed impeller 510 includes a feed shaft 511 and flexible blades 512, and the feed shaft 511 is rotatably connected to the feed shell 520, and the flexible blades 512 are rubber sheets, and the flexible blades 512 are fixed to the feed shaft 511 in a divergent shape;

[0069] In this embodiment, during feeding, the PVC profile is inserted between the two flexible blades 512. When the pulverizing assembly 200 rotates, the outside air enters the pulverizing chamber 111 from the vortex partition 160. When the air enters the pulverizing chamber 111 from the feeding pipe 150, it drives the feeding impeller 510 to rotate. When the feeding impeller 510 rotates, the feeding impeller 510 applies an inward force to the PVC profile, thereby driving the PVC profile to enter the pulverizing chamber 111. The feeding shaft 511 is a hard plastic roller, and the flexible blades 512 are rubber sheets. When the PVC profile is inserted into the vortex partition 160, the flexible blades 512 on both sides are deformed and clamp the PVC profile, and the flexible blades 512 block the vortex partition 160. The air drives the feeding impeller 510 to rotate, and the flexible blades 512 drive the PVC profile to move.

[0070] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "the" and "the" used in the present invention and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0071] It should be understood that although the terms first, second, third, etc. may be used in the present invention to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0072] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PVC profile crushing device, characterized in that: The pulverizing device comprises: A shell, wherein a vortex partition is arranged in the shell to form a vortex channel, a crushing chamber is arranged at the center of the vortex partition, and an arc-shaped separation sheet is arranged in the port of the vortex channel close to the inner wall of the shell to form two separation channels, wherein the separation channel located on the outer side is provided with a feed opening at the lower end of the shell, and the separation channel located on the inner side is provided with an air outlet at the upper end of the shell, and the upper end of the shell is also provided with a feed opening; an arc-shaped baffle is also arranged in the separation channel, and the arc-shaped baffle is located at the feed opening and the air outlet of the separation channel; A crushing assembly rotatably connected to the crushing chamber, the crushing assembly comprising a rotating shaft and a plurality of crushing pieces divergently arranged in the circumferential direction, the crushing pieces eccentrically connected to the outer side to form a turbine blade structure, and a plurality of serrated crushing blades are arranged on one side of the crushing piece close to the feed inlet; A motor, wherein the output end of the motor is fixedly connected to the rotating shaft to drive the crushing assembly to rotate.

2. The PVC profile crushing device according to claim 1, characterized in that: There are multiple spiral baffles, which are evenly distributed around the axis of the shell in the circumferential direction. The multiple spiral baffles are arranged in a mutually nested form.

3. The PVC profile crushing device according to claim 1 or 2, characterized in that: The pulverizing device also includes: The upper shell is a cylindrical shape with an opening, an air outlet cavity is formed on the outer shell of the upper shell, the air outlet is located in the air outlet cavity, and a first air outlet pipe is fixedly connected to the upper shell.

4. The PVC profile crushing device according to claim 3, characterized in that: The upper shell is also fixedly connected with a feed pipe, and the pulverizing device further comprises: The feeding assembly is used to drive the PVC profile into the crushing chamber.

5. The PVC profile crushing device according to claim 4, characterized in that: The feed pipe is tiltedly arranged on the upper shell, and the feed assembly is provided with two groups, and the two groups of the feed assemblies are respectively fixed to the two sides of the feed pipe, and the feed assembly includes: A feed shell, the feed shell is fixed to the feed pipe, and the feed shell is communicated with the feed pipe; The feed impeller is an impeller-shaped structure, comprising a feed shaft and flexible blades, the feed shaft is rotatably connected to the feed shell, the flexible blades are fixed to the feed shaft in a divergent shape, and when feeding, the PVC profile is inserted between the two flexible blades.

6. The PVC profile crushing device according to claim 1 or 2, characterized in that: The pulverizing device also includes: The lower shell is fixedly connected to the outer shell to form a material discharge cavity, and the material discharge port is located in the material discharge cavity.

7. The PVC profile crushing device according to claim 6, characterized in that: The lower shell includes a straight section and a tapered section, the straight section and the tapered section are fixedly connected, and a discharge port is arranged at the small end of the tapered section.

8. The PVC profile crushing device according to claim 7, characterized in that: The inner side of the lower shell is also provided with a core tube fixedly connected to the outer shell, and the core tube is also connected to the outside through the second air outlet pipe. The pulverizing device also includes The discharge assembly is used to intermittently open the discharge port to perform secondary separation of the crushed particles and air.

9. The PVC profile crushing device according to claim 8, characterized in that: The discharge port is a cylindrical structure with openings at both ends, one end of the discharge port is closed by a sheet-shaped plug, and a fan-shaped material port is provided on the sheet-shaped plug. The discharge assembly includes: A reducer, wherein the reducer is fixedly connected to the core tube, and an input end of the reducer is fixedly connected to the pulverizing assembly; A transmission shaft, the transmission shaft being fixedly connected to an output end of the reducer; The rotating baffle is a disc structure, and a fan-shaped notch is arranged on the rotating baffle. The rotating baffle is fixedly connected to the end of the transmission shaft away from the reducer to rotate with the crushing assembly. When the rotating baffle rotates, the fan-shaped notch and the fan-shaped material opening overlap intermittently.

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