Pulverizing equipment of powder coating pulverizer

Abstract

The invention belongs to the technical field of powder coating processing equipment, and particularly relates to powder coating pulverizer pulverizing equipment which comprises a pulverizing box body, a pre-pulverizing mechanism, a secondary pulverizing mechanism and a transmission mechanism, and a top plate is arranged at the top of the pulverizing box body; the pre-crushing mechanism is used for pre-crushing the powder coating and is arranged above the top plate, supporting columns are arranged at the four ends of the pre-crushing mechanism, and the pre-crushing mechanism is connected with the top plate through the supporting columns; the second-stage crushing mechanism is used for further crushing the powder coating, a bearing frame is arranged at the position, corresponding to the second-stage crushing mechanism, of the crushing box body, a stabilizing frame is arranged at the bottom of the bearing frame, and the second-stage crushing mechanism is arranged at the top of the bearing frame and extends into the crushing box body. According to the equipment, the pre-crushing mechanism is arranged, so that the equipment has a pretreatment function, raw materials can be primarily crushed, meanwhile, the secondary crushing mechanism composed of crushing teeth which are spirally and alternately arranged is arranged, the raw materials are secondarily treated, and the crushing efficiency of the equipment is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of powder coating processing equipment, in particular to a powder coating pulverizer pulverizing equipment. Background Art

[0002] Powder coating is a solid powdered synthetic resin coating composed of solid resin, pigment, filler and additives. Unlike ordinary solvent-based coatings and water-based coatings, its dispersion medium is air instead of solvent and water. It has the characteristics of no solvent pollution, 100% film formation and low energy consumption. Powder coatings are divided into two categories: thermoplastic and thermosetting. Thermoplastic powder coatings have poor coating appearance (gloss and leveling) and poor adhesion to metal, so they are rarely used in the field of automotive painting. Automotive painting generally uses thermosetting powder coatings. Thermosetting powder coatings use thermosetting synthetic resins as film-forming substances. During the drying process, the resin first melts and then solidifies into a smooth and hard coating film after chemical cross-linking. The appearance of the paint film, various mechanical properties and corrosion resistance formed by this type of coating can meet the requirements of automotive finishing;

[0003] It is widely used in many fields such as home appliances, automobiles, and construction through spraying and curing processes. However, in the production process of powder coatings, crushing the particles of powder coatings is very important, which directly affects the uniformity, fluidity and quality of the coating.

[0004] The prior art has the following defects or problems: The prior art has a publication number of: CN105381835B A powder coating pulverizer pulverizing mechanism includes a pulverizing frame, a fixed pulverizing frame, a dynamic pulverizing frame, an adjustment device, a reset device and a drive system;

[0005] During the use of the above device, longitudinally extending concave-convex patterns are arranged on the surface of the dynamic crushing plate, and the concave-convex patterns on the dynamic crushing plate and the concave-convex patterns on the top crushing plate are arranged in a staggered manner. By using the crushing device of the present invention, the crushing effect is good and the service life of the crushing device is long;

[0006] The above content only performs a single crushing process on the powder coating without a pre-processing process, and its overall crushing efficiency is low. At the same time, the specifications of the raw materials after crushing cannot be controlled and there is no screening function.

[0007] It should be noted that the above contents belong to the technical knowledge of the inventor and do not necessarily constitute prior art. Summary of the invention

[0008] In view of the deficiencies in the prior art, the present invention provides a powder coating pulverizer pulverizing device to solve the existing problems.

[0009] To achieve the above object, the present invention provides the following technical solution: a powder coating pulverizer pulverizing device, comprising:

[0010] A crushing box, wherein a top plate is arranged on the top of the crushing box, a bottom plate is arranged on the bottom of the crushing box, a bellows is arranged on one side of the top end surface of the bottom plate, a support frame is arranged at the bottom of the bottom plate, and a feeding end is arranged at the top of the back of the crushing box;

[0011] A pre-crushing mechanism, which is used for pre-crushing powder coatings, is arranged above the top plate, and pillars are arranged at four ends of the pre-crushing mechanism, and the pre-crushing mechanism is connected to the top plate through the pillars;

[0012] A secondary crushing mechanism, the secondary crushing mechanism is used to further crush the powder coating, the crushing box is provided with a bearing frame at a position corresponding to the secondary crushing mechanism, a stabilizing frame is provided at the bottom of the bearing frame, and the secondary crushing mechanism is provided on the top of the bearing frame and extends into the crushing box;

[0013] A transmission mechanism, the transmission mechanism is used to form a transmission structure, and the transmission mechanism is arranged on the other side of the crushing box;

[0014] A screening mechanism, which is used to screen the powder and is arranged inside the pulverizing box and below the secondary pulverizing mechanism;

[0015] The storage mechanism is used to collect the crushed paint powder and is arranged below the screening mechanism.

[0016] In some of the embodiments, the power source of the pre-crushing mechanism is a hydraulic device, and a control rod is movably connected to its output end. The two groups of control rods are controlled by the hydraulic device to achieve synchronous up and down movement. The two groups of control rods pass through the top plate and the top of the crushing box and extend into the crushing box.

[0017] In some embodiments, the pre-crushing mechanism further comprises:

[0018] A crushing plate, the crushing plate is fixedly installed inside the crushing box, the upper and lower end surfaces of the crushing plate are provided with crushing grooves, and the end surface is provided with crushing holes, the crushing holes are provided in several groups, and are arranged according to the requirements of powder coating crushing;

[0019] The pressure plate is located above the inside of the crushing box, and its end face is connected to the two groups of control rods. The pressure plate moves with the movement of the two groups of control rods. The bottom end face of the pressure plate is fixedly connected with a contact end, and the size of the contact end is consistent with the crushing trough.

[0020] In some embodiments, a circulating fan is fixedly connected inside the bellows, and its output end and input end are respectively connected to an exhaust air duct and a return air duct, the other end of the exhaust air duct is connected to the top of the crushing box, and the other end of the return air duct is connected to the bottom of the crushing box.

[0021] In some embodiments, the secondary crushing mechanism includes:

[0022] A driving motor, the driving motor is arranged on the top end surface of the carrier frame, and the outer cover is provided with a protective shell, the output end of the driving motor is movably connected with a coupling, the driving motor is movably connected with a driving shaft through the coupling, the top of the driving shaft is fixedly connected with a driving toothed disc, a transmission shaft is arranged on one side of the driving shaft, a transmission toothed disc is fixedly connected on one side of the transmission shaft, the driving toothed disc is meshed with the transmission toothed disc, and the transmission shaft runs through the crushing box;

[0023] Connecting shaft seats, the connecting shaft seats are arranged at corresponding positions of the inner wall of the crushing box, and a driven shaft is inserted between the connecting shaft seats;

[0024] The driving shaft and the two groups of driven shafts are sleeved with supporting cylinders on their outer sides, and mounting plates are fixedly connected on both sides, and crushing teeth are fixedly connected between the two groups of mounting plates.

[0025] In some embodiments, the crushing teeth are arranged in a spiral coil, the outer crushing teeth of the driving shaft are arranged at the bottom, and two groups of outer crushing teeth of the driven shaft are arranged above the crushing teeth at the end of the driving shaft, and the three groups are arranged in a staggered manner.

[0026] In some embodiments, the transmission shaft and one end of the driven shaft both pass through the crushing box and are connected to the transmission mechanism;

[0027] The transmission mechanism includes a stable connection part, which is provided with three groups and is respectively sleeved on one side of the transmission shaft and the driven shaft. The outer sides of the three groups of stable connection parts are fixedly connected with transmission teeth, and a transmission rack is sleeved with the transmission teeth.

[0028] In some embodiments, the front end face of the crushing box is provided with an opening, and slots are provided on both sides, and a screening mechanism is detachably connected inside, a screening net is fixedly connected to the top end face of the screening mechanism, and both sides are screening slopes, blocks are fixedly connected to both sides of the screening mechanism, and the two groups of blocks are consistent in size with the slots, and handles are fixedly connected to both sides of the front end face of the screening mechanism;

[0029] The front end surface of the crushing box is provided with a storage port below the opening, the storage mechanism is inserted into the storage port, the end surface of the storage mechanism is provided with a storage groove, the front end surface of the storage mechanism is fixedly connected with a lining plate, and the front end surface of the lining plate is fixedly connected with a handle.

[0030] Compared with the prior art, the present invention provides a powder coating pulverizer pulverizing device, which has the following beneficial effects:

[0031] The powder coating pulverizer pulverizing equipment is provided with a pre-crushing mechanism. The raw materials first enter the end face of the crushing plate. The hydraulic device controls two sets of control rods to operate synchronously, driving the pressing plate to move along the inner wall of the crushing box toward the crushing plate below, squeezing the raw materials that fall into the end face of the crushing plate. The crushed raw materials can fall into the post-processing mechanism through the crushing hole, so that the equipment has a pre-processing function and can perform preliminary crushing on the raw materials, thereby improving the crushing efficiency of the equipment;

[0032] By setting up a two-stage crushing structure, when the pre-crushing mechanism starts to operate, the driving motor operates, which can drive the driving shaft to rotate through the coupling, and the transmission shaft can rotate along with it during this process. Since a transmission mechanism is provided on one side of the equipment, the transmission shaft and one side of the driven shaft are both connected with a stable connection part, and the three are connected through a transmission rack;

[0033] The transmission mechanism is set up so that the driven shaft can move along with the transmission shaft during its rotation. During the rotation of the transmission shaft and the driven shaft, the crushing teeth arranged on the outside can perform fine secondary crushing treatment on the raw materials. The three groups of crushing teeth are arranged in a spiral shape and staggered with each other, which can effectively improve the crushing efficiency of the equipment and can perform more effective crushing treatment on the raw materials.

[0034] In addition, since the raw materials are pre-treated, no large particles of raw materials will appear in the secondary processing process, which can effectively improve the processing efficiency of the secondary crushing mechanism;

[0035] After the secondary crushing process, the raw materials fall into the screening mechanism under the influence of gravity. During this process, the staff holds the handle and moves the screening mechanism horizontally along the opening position. The setting of the screening slope can effectively prevent the raw materials from being scattered during this process. The raw materials are screened through the screening net. The raw materials that meet the requirements enter the storage groove on the end face of the storage mechanism for storage. The raw materials that do not meet the requirements are accumulated on the surface of the screening net. The staff can remove the screening mechanism, pour out the raw materials that do not meet the requirements on the end face, and crush them again. The manual screening is more refined, which can effectively improve the screening effect, and can realize integrated storage and collection, thereby improving the subsequent preparation efficiency of powder coatings.

[0036] After completing the above steps, start the fan inside the bellows. The fan adopts a circulating fan structure. Air can be exhaled through the exhaust pipe and air can be returned through the return pipe. The crushing box can be effectively cleaned after operation. It should be noted that the screening mechanism and the storage mechanism are withdrawn during this process, which can effectively avoid blockage of raw materials and affect the normal operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0038] Figure 2 It is a schematic diagram of another viewing angle of the overall structure of the present invention;

[0039] Figure 3 It is a side view schematic diagram of the overall structure of the present invention;

[0040] Figure 4 It is a three-dimensional schematic diagram of the structure of the pre-crushing mechanism of the present invention;

[0041] Figure 5 It is a three-dimensional schematic diagram of the structure of the secondary crushing mechanism of the present invention;

[0042] Figure 6 It is a schematic diagram of the structure of the secondary crushing mechanism of the present invention from another perspective;

[0043] Figure 7 It is a schematic diagram of the screening mechanism and storage mechanism structure of the present invention.

[0044] In the figure: 1. crushing box; 2. top plate; 3. pre-crushing mechanism; 31. control rod; 32. support; 33. pressure plate; 34. contact end; 35. crushing plate; 36. crushing hole; 4. bellows; 41. air duct; 42. return air duct; 5. bearing frame; 51. stabilizing frame; 6. secondary crushing mechanism; 61. driving motor; 62. coupling; 63. driving shaft; 64. transmission shaft; 65. supporting cylinder; 66. mounting plate; 67. crushing teeth; 68. connecting shaft seat; 69. driven shaft; 7. transmission mechanism; 71. stabilizing connection part; 72. transmission rack; 8. bottom plate; 9. supporting frame; 10. screening mechanism; 101. screening slope; 102. screening net; 103. block; 104. handle; 11. storage mechanism; 111. storage slot; 112. lining plate; 13. handle. DETAILED DESCRIPTION

[0045] 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.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] See also Figure 1-3In this embodiment: a powder coating pulverizer pulverizing device, comprising:

[0048] A pulverizing box 1, a top plate 2 is arranged on the top of the pulverizing box 1, a bottom plate 8 is arranged on the bottom of the pulverizing box 1, a bellows 4 is arranged on one side of the top end surface of the bottom plate 8, a support frame 9 is arranged at the bottom of the bottom plate 8, and a feeding end is arranged on the top of the back of the pulverizing box 1;

[0049] The crushing box 1 can be effectively cleaned after operation. It should be noted that the screening mechanism 10 and the storage mechanism 11 are withdrawn during this process, which can effectively avoid the blockage of raw materials and affect the normal operation of the equipment;

[0050] The pre-crushing mechanism 3 is used for pre-crushing the powder coating, and is arranged above the top plate 2. The four ends of the pre-crushing mechanism 3 are provided with pillars 32, and the pre-crushing mechanism 3 is connected to the top plate 2 through the pillars 32;

[0051] A secondary crushing mechanism 6 is used to further crush the powder coating. A bearing frame 5 is provided at the position of the crushing box 1 corresponding to the secondary crushing mechanism 6. A stabilizing frame 51 is provided at the bottom of the bearing frame 5. A secondary crushing mechanism 6 is provided at the top of the bearing frame 5 and extends into the crushing box 1.

[0052] Transmission mechanism 7, which is used to form a transmission structure, and is arranged on the other side of the crushing box 1;

[0053] The screening mechanism 10 is used for screening powder, and is arranged inside the pulverizing box 1 and below the secondary pulverizing mechanism 6;

[0054] The storage mechanism 11 is used to collect the crushed coating powder and is arranged below the screening mechanism 10 .

[0055] In this embodiment, Figure 1-4 As shown, the power source of the pre-crushing mechanism 3 is a hydraulic device, and its output end is movably connected with a control rod 31. The two groups of control rods 31 are controlled by the hydraulic device to achieve synchronous up and down movement. The two groups of control rods 31 penetrate the top plate 2 and the top of the crushing box 1 and extend into the crushing box 1.

[0056] The pre-crushing mechanism 3 also includes:

[0057] The crushing plate 35 is fixedly installed inside the crushing box 1. The upper and lower end surfaces of the crushing plate 35 are provided with crushing grooves, and the end surface is provided with crushing holes 36. The crushing holes 36 are provided in several groups and are arranged according to the crushing requirements of the powder coating;

[0058] The pressing plate 33 is located above the inside of the crushing box 1, and the end surface of the pressing plate 33 is connected to the two groups of control rods 31. The pressing plate 33 moves with the movement of the two groups of control rods 31. The bottom end surface of the pressing plate 33 is fixedly connected with a contact end 34, and the size of the contact end 34 is consistent with that of the crushing tank;

[0059] This enables the equipment to have a pre-treatment function and to perform preliminary crushing on the raw materials, thereby improving the crushing efficiency of the equipment.

[0060] In this embodiment, Figure 1-3 As shown, a circulating fan is fixedly connected inside the wind box 4, and its output end and input end are respectively connected to an exhalation pipe 41 and a return air pipe 42, the other end of the exhalation pipe 41 is connected to the top of the pulverizing box 1, and the other end of the return air pipe 42 is connected to the bottom of the pulverizing box 1;

[0061] The crushing box 1 can be effectively cleaned after operation. It should be noted that the screening mechanism 10 and the storage mechanism 11 are withdrawn during this process, which can effectively avoid clogging of raw materials and affecting the normal operation of the equipment.

[0062] In this embodiment, Figure 3 and Figure 5-6 As shown, the secondary crushing mechanism 6 includes:

[0063] A driving motor 61 is provided on the top end surface of the carrier frame 5, and a protective shell is provided on the outer cover. A coupling 62 is movably connected to the output end of the driving motor 61. The driving motor 61 is movably connected to a driving shaft 63 through the coupling 62. A driving gear plate is fixedly connected to the top of the driving shaft 63. A transmission shaft 64 is provided on one side of the driving shaft 63. A transmission gear plate is fixedly connected to one side of the transmission shaft 64. The driving gear plate meshes with the transmission gear plate. The transmission shaft 64 runs through the crushing box 1.

[0064] A connecting shaft seat 68 is arranged at a corresponding position of the inner wall of the crushing box 1, and a driven shaft 69 is inserted between the connecting shaft seats 68;

[0065] The driving shaft 63 and the two sets of driven shafts 69 are sleeved with support cylinders 65 on the outside, and both sides are fixedly connected with mounting plates 66, and crushing teeth 67 are fixedly connected between the two sets of mounting plates 66;

[0066] The crushing teeth 67 are arranged in a spiral coil, the crushing teeth 67 outside the driving shaft 63 are arranged below, and two groups of crushing teeth 67 outside the driven shaft 69 are arranged above the crushing teeth 67 at the end of the driving shaft 63, and the three groups are arranged in a staggered manner.

[0067] One end of the transmission shaft 64 and the driven shaft 69 both penetrate the crushing box 1 and are connected to the transmission mechanism 7;

[0068] The transmission mechanism 7 includes a stable connection part 71, which is provided with three groups and is respectively sleeved on one side of the transmission shaft 64 and the driven shaft 69. The outer sides of the three groups of stable connection parts 71 are fixedly connected with transmission teeth, and a transmission rack 72 is sleeved with the transmission teeth.

[0069] It can effectively improve the crushing efficiency of the equipment and can crush the raw materials more effectively. At the same time, since the raw materials are pre-treated, no large particles of raw materials will appear in the secondary processing process, which can effectively improve the processing efficiency of the secondary crushing mechanism 6.

[0070] In this embodiment, Figure 7 As shown, the front end face of the crushing box 1 is provided with an opening, and slots are provided on both sides, and a screening mechanism 10 is detachably connected inside, a screening net 102 is fixedly connected to the top end face of the screening mechanism 10, and both sides are screening slopes 101, and blocks 103 are fixedly connected to both sides of the screening mechanism 10, and the two groups of blocks 103 are consistent in size with the slots, and handles 104 are fixedly connected to both sides of the front end face of the screening mechanism 10;

[0071] The front end surface of the crushing box 1 is provided with a storage opening below the opening, the storage mechanism 11 is inserted into the storage opening, the end surface of the storage mechanism 11 is provided with a storage groove 111, the front end surface of the storage mechanism 11 is fixedly connected with a lining plate 112, and the front end surface of the lining plate 112 is fixedly connected with a handle 113;

[0072] The process of scattering raw materials can be effectively avoided. The raw materials are screened through the screening net 102. The raw materials that meet the requirements enter the storage groove 111 at the end face of the storage mechanism 11 for storage. The raw materials that do not meet the requirements are accumulated on the surface of the screening net 102. The staff can remove the screening mechanism 10, pour out the raw materials that do not meet the requirements on the end face, and crush them again. The manual screening is more refined, which can effectively improve the screening effect, and can realize integrated storage and collection, thereby improving the subsequent preparation efficiency of powder coatings.

[0073] The working principle and use process of the present invention are as follows: the raw material first enters the end face of the crushing plate 35, and the two groups of control rods 31 are controlled by the hydraulic device to operate synchronously, driving the pressing plate 33 to move along the inner wall of the crushing box 1 toward the crushing plate 35 below, squeezing the raw material falling into the end face of the crushing plate 35, and the crushed raw material can fall into the rear processing mechanism through the crushing hole 36. During the above operation, the driving motor 61 operates, which can drive the driving shaft 63 to rotate through the coupling 62, and the transmission shaft 64 can rotate with it during this process. Since a transmission mechanism 7 is provided on one side of the device, a stable connection part 71 is connected to one side of the transmission shaft 64 and the driven shaft 69, and the three are connected by a transmission rack 72;

[0074] The transmission mechanism 7 is set so that the driven shaft 69 can move along with the rotation of the transmission shaft 64. During the rotation of the transmission shaft 64 and the driven shaft 69, the crushing teeth 67 arranged on the outer side thereof can perform fine secondary crushing processing on the raw materials. The three groups of crushing teeth 67 are all arranged in a spiral shape and staggered with each other, so as to perform more effective and fine crushing on the raw materials. After the secondary crushing processing, the raw materials fall into the screening mechanism 10 under the influence of gravity. During this process, the staff holds the handle 104 and can move the screening mechanism 10 horizontally along the opening position. The setting of the screening slope 101 can effectively prevent the raw materials from being scattered during this process. The raw materials are screened through the screening net 102. The raw materials that meet the requirements enter the end surface storage groove 111 of the storage mechanism 11 for storage. The raw materials that do not meet the requirements are accumulated on the surface of the screening net 102. The staff can remove the screening mechanism 10, pour out the raw materials that do not meet the requirements on its end surface, and crush them again. The manual screening is more refined.

[0075] After the above steps are completed, the fan inside the bellows 4 is started. The fan adopts a circulating fan structure. The air can be exhaled through the air exhaust pipe 41 and the air can be returned through the air return pipe 42. The crushing box 1 can be effectively cleaned after operation.

[0076] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0077] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A powder coating pulverizer pulverizing device, characterized in that, include: A pulverizing box (1), wherein a top plate (2) is arranged on the top of the pulverizing box (1), a bottom plate (8) is arranged on the bottom of the pulverizing box (1), a bellows (4) is arranged on one side of the top end surface of the bottom plate (8), a support frame (9) is arranged at the bottom of the bottom plate (8), and a feeding end is arranged at the top end of the back of the pulverizing box (1); A pre-crushing mechanism (3), the pre-crushing mechanism (3) is used to pre-crush the powder coating, and is arranged above the top plate (2). The four ends of the pre-crushing mechanism (3) are all provided with pillars (32), and the pre-crushing mechanism (3) is connected to the top plate (2) via the pillars (32); A secondary pulverizing mechanism (6), the secondary pulverizing mechanism (6) is used to further pulverize the powder coating, the pulverizing box (1) is provided with a carrier frame (5) at a position corresponding to the secondary pulverizing mechanism (6), a stabilizing frame (51) is provided at the bottom of the carrier frame (5), and the secondary pulverizing mechanism (6) is provided at the top of the carrier frame (5) and extends into the interior of the pulverizing box (1); A transmission mechanism (7), the transmission mechanism (7) is used to form a transmission structure, and the transmission mechanism (7) is arranged on the other side of the crushing box (1); A screening mechanism (10), the screening mechanism (10) is used for screening powder, and is arranged inside the pulverizing box (1) and below the secondary pulverizing mechanism (6); A storage mechanism (11) is used to collect the pulverized coating powder and is arranged below the screening mechanism (10).

2. The powder coating pulverizer pulverizing device according to claim 1, characterized in that: The power source of the pre-crushing mechanism (3) is a hydraulic device, and a control rod (31) is movably connected to the output end thereof. The two groups of control rods (31) are controlled by the hydraulic device and can realize synchronous up and down movement. The two groups of control rods (31) penetrate the top plate (2) and the top of the crushing box (1) and extend into the interior of the crushing box (1).

3. A powder coating pulverizer pulverizing device according to claim 2, characterized in that: The pre-crushing mechanism (3) further comprises: A crushing plate (35), the crushing plate (35) is fixedly installed inside the crushing box (1), the upper and lower end surfaces of the crushing plate (35) are both provided with crushing grooves, and the end surface is provided with crushing holes (36), and the crushing holes (36) are provided in a plurality of groups, and are arranged according to the requirements for crushing the powder coating; A pressure plate (33), the pressure plate (33) is located above the inside of the crushing box (1), and the end surface is connected to the two groups of control rods (31), the pressure plate (33) moves with the movement of the two groups of control rods (31), and the bottom end surface of the pressure plate (33) is fixedly connected with a contact end (34), and the size of the contact end (34) is consistent with that of the crushing tank.

4. The powder coating pulverizer pulverizing device according to claim 1, characterized in that: A circulating fan is fixedly connected inside the wind box (4), and the output end and input end thereof are respectively connected to an air exhalation pipe (41) and an air return pipe (42); the other end of the air exhalation pipe (41) is connected to the top of the pulverizing box (1), and the other end of the air return pipe (42) is connected to the bottom of the pulverizing box (1).

5. The powder coating pulverizer pulverizing device according to claim 1, characterized in that: The secondary crushing mechanism (6) comprises: A driving motor (61), the driving motor (61) being arranged on the top end surface of the carrier frame (5), and having an outer cover provided with a protective shell, the output end of the driving motor (61) being movably connected with a coupling (62), the driving motor (61) being movably connected with a driving shaft (63) through the coupling (62), the top of the driving shaft (63) being fixedly connected with a driving toothed disc, a transmission shaft (64) being arranged on one side of the driving shaft (63), a transmission shaft (64) being fixedly connected with a transmission toothed disc on one side of the transmission shaft (64), the driving toothed disc being meshed with the transmission toothed disc, and the transmission shaft (64) passing through the crushing box (1); A connecting shaft seat (68), wherein the connecting shaft seat (68) is arranged at a corresponding position of the inner side wall of the crushing box (1), and a driven shaft (69) is inserted between the connecting shaft seats (68); The driving shaft (63) and the two groups of driven shafts (69) are sleeved with supporting cylinders (65) on their outer sides, and mounting plates (66) are fixedly connected on both sides, and crushing teeth (67) are fixedly connected between the two groups of mounting plates (66).

6. A powder coating pulverizer pulverizing device according to claim 5, characterized in that: The crushing teeth (67) are arranged in a spiral coil, the crushing teeth (67) outside the driving shaft (63) are arranged below, and two groups of crushing teeth (67) outside the driven shaft (69) are arranged above the crushing teeth (67) at the end of the driving shaft (63), and the three groups are arranged in a staggered manner.

7. The powder coating pulverizer pulverizing device according to claim 5, characterized in that: One end of the transmission shaft (64) and the driven shaft (69) both penetrate the crushing box (1) and are connected to the transmission mechanism (7); The transmission mechanism (7) comprises a stable connection part (71), wherein three groups of the stable connection parts (71) are provided and are respectively sleeved on one side of the transmission shaft (64) and the driven shaft (69), and transmission teeth are fixedly connected to the outside of the three groups of the stable connection parts (71), and a transmission rack (72) is sleeved via the transmission teeth.

8. The powder coating pulverizer pulverizing device according to claim 1, characterized in that: The front end surface of the crushing box (1) is provided with an opening, and slots are provided on both sides, and a screening mechanism (10) is detachably connected therein; a screening net (102) is fixedly connected to the top end surface of the screening mechanism (10), and both sides are screening inclined surfaces (101); both sides of the screening mechanism (10) are fixedly connected with blocks (103), and the two groups of blocks (103) are of the same size as the slots; and both sides of the front end surface of the screening mechanism (10) are fixedly connected with handles (104); The front end surface of the crushing box (1) is provided with a storage opening below the opening, the storage mechanism (11) is plugged into the storage opening, the end surface of the storage mechanism (11) is provided with a storage groove (111), the front end surface of the storage mechanism (11) is fixedly connected to a lining plate (112), and the front end surface of the lining plate (112) is fixedly connected to a handle (113).

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