Polystyrene foaming device

Abstract

The present invention provides a polystyrene foaming device, comprising a workbench, a foaming tank, a butt joint tube, a first hinged rod, a second hinged rod and a cleaning assembly, wherein the foaming tank is arranged on the workbench, and a discharge pipe is arranged at the lower part of the foaming tank, and a limit plate protruding toward the periphery is arranged at the outer end of the discharge pipe; the butt joint tube is arranged at the outer end of the discharge pipe, and a sliding sleeve is arranged on the outer periphery of the butt joint tube; the first hinged rod is hinged at the end of the butt joint tube, and a hook for hooking on the inner end surface of the limit plate is connected to the first hinged rod; the second hinged rod is hinged between the first hinged rod and the sliding sleeve, and the sliding sleeve can move toward the end of the butt joint tube and drive the first hinged rod to swing until the hook hooks on the inner end surface of the limit plate; the cleaning assembly is arranged on the butt joint tube, and a cleaning brush is arranged on the cleaning assembly for sliding along the axial direction of the butt joint tube. The polystyrene foaming device provided by the present invention can slide the sliding sleeve in a direction away from the discharge pipe to quickly disassemble the cleaning assembly, thereby improving the disassembly efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of polystyrene foaming, and more specifically, relates to a polystyrene foaming device. Background Art

[0002] Polystyrene foam is a lightweight porous polymer. Its manufacturing method is to add a foaming agent to the polystyrene resin, generate bubbles in the resin after heating, and form a closed honeycomb structure. The foaming device is usually used for foaming.

[0003] In order to be able to clean the foaming agent solution in the discharge pipe in time and prevent it from solidifying and clogging the discharge pipe, the foaming device in the prior art is often equipped with a cleaning assembly to facilitate cleaning. However, the cleaning assembly is often connected to the foaming device by multiple bolts. When the cleaning assembly needs to be replaced, the bolts need to be removed one by one, which reduces the disassembly efficiency. Summary of the invention

[0004] The embodiment of the present invention provides a polystyrene foaming device, which can slide a sleeve in a direction away from a discharge pipe to quickly disassemble a cleaning component, thereby improving disassembly efficiency.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a polystyrene foaming device is provided, comprising a workbench, a foaming tank, a butt joint tube, a first hinged rod, a second hinged rod and a cleaning assembly, the foaming tank is arranged on the workbench, and a discharge pipe is arranged at the lower part of the foaming tank, and a limit plate protruding toward the outer periphery is arranged at the outer end of the discharge pipe; the butt joint tube is arranged at the outer end of the discharge pipe, and a sliding sleeve is arranged on the outer periphery of the butt joint tube; the first hinged rod is hinged to the end of the butt joint tube, and a hook is connected to the first hinged rod, and the first hinged rod can swing toward the side close to the discharge pipe so that the hook is hooked on the inner end surface of the limit plate; the second hinged rod is hinged between the first hinged rod and the sliding sleeve, and the sliding sleeve can move toward the end of the butt joint tube and drive the first hinged rod to swing until the hook is hooked on the inner end surface of the limit plate; the cleaning assembly is arranged on the butt joint tube, and the cleaning assembly has a cleaning brush located at the outer end of the butt joint tube and capable of sliding along the axial direction of the butt joint tube, and the cleaning brush can extend into the discharge pipe to clean the inner peripheral wall of the discharge pipe.

[0006] In one possible implementation, the inner end surface of the limit plate is provided with a limit column extending along the axial direction of the discharge pipe, and the hook is penetrated by a limit groove for accommodating the limit column. The hook can swing vertically until the limit column enters the limit groove to limit the circumferential position of the docking tube and the discharge pipe.

[0007] In a possible implementation, a mounting platform protruding toward the outer circumference is provided at the end of the butt-joint pipe, the sliding sleeve is located on the inner side of the mounting platform, and the first hinged rod is hinged to the mounting platform.

[0008] In some embodiments, the sliding sleeve is an iron component, and a magnet for adsorbing the sliding sleeve is provided on the inner end surface of the mounting platform.

[0009] In some embodiments, the cleaning assembly includes two sliding rods, two guide sleeves and an extension rod, wherein the two sliding rods are symmetrically arranged on both sides of the docking tube and extend outward along the axial direction of the docking tube; the two guide sleeves are respectively and one-to-one slidably sleeved on the outer periphery of the two sliding rods; the extension rod is arranged between the two sliding rods and is respectively connected to the two guide sleeves, and the extension rod extends toward the docking tube along the axial direction of the docking tube; the cleaning brush is connected to the extended end of the extension rod, and is used to penetrate the docking tube and extend into the discharge pipe under the drive of the extension rod to clean the inner circumferential wall of the discharge pipe.

[0010] In some embodiments, a hinge seat is provided on the outer peripheral wall of the docking tube, the sliding rod and the hinge seat are hinged by a rotating shaft extending horizontally in a direction perpendicular to the main axis of the docking tube, the sliding rod can swing vertically, and a locking member for limiting the swinging position of the sliding rod is provided on the hinge seat, and a limit block is slidably connected to the locking member. When the sliding rod swings to a horizontal state, the limit block can move to the bottom of the sliding rod to limit the swinging position of the sliding rod.

[0011] In some embodiments, the locking member includes a connecting shell and an elastic member. The connecting shell is connected to the hinge seat and is located on the outside of the sliding rod. The connecting shell has a sliding cavity with an opening toward the docking tube, and the limit block is slidably connected in the sliding cavity. One end of the elastic member is connected to the inner bottom wall of the sliding cavity and the other end is connected to the limit block, so as to elastically push the limit block toward the direction close to the docking tube.

[0012] In some embodiments, the inner end of the limit block is connected to a guide column that horizontally penetrates the inner bottom wall of the sliding cavity and slidably cooperates with the connecting shell, and the elastic member is sleeved on the outer periphery of the guide column.

[0013] In some embodiments, the hinged end of the slide rod is connected to a limiting member, and when the slide rod swings to a horizontal state, the limiting member can press against the inner end surface of the slide sleeve to limit the axial displacement of the slide sleeve.

[0014] In some embodiments, a threaded cap is provided on the outer end threaded sleeve of the slide rod, and the threaded cap is used to contact and cooperate with the guide sleeve to limit the axial displacement of the guide sleeve.

[0015] Compared with the prior art, the polystyrene foaming device provided in this embodiment only requires sliding the sleeve away from the limit plate when the cleaning component needs to be disassembled, so that the hook can be disengaged from the limit plate, thereby releasing the lock between the docking tube and the discharge pipe, thereby realizing rapid disassembly of the cleaning component and improving disassembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 A schematic diagram of the structure of a polystyrene foaming device provided in an embodiment of the present invention;

[0018] Figure 2 A schematic diagram of the structure of a polystyrene foaming device provided in an embodiment of the present invention without a workbench and a foaming tank;

[0019] Figure 3 For the embodiment of the present invention Figure 2 The schematic diagram of the local enlarged structure at position Ⅰ in the middle;

[0020] Figure 4 A schematic diagram of the disassembled structure of the polystyrene foaming device provided in an embodiment of the present invention without the workbench and the foaming tank;

[0021] Figure 5 For the embodiment of the present invention Figure 4 Schematic diagram of the local enlarged structure at II in the middle;

[0022] Figure 6 A schematic diagram of the disassembled structure of the polystyrene foaming device provided in an embodiment of the present invention with the workbench and the foaming tank removed from another perspective;

[0023] Figure 7 For the embodiment of the present invention Figure 6 The schematic diagram of the local enlarged structure at point III in the middle;

[0024] Figure 8 For the embodiment of the present invention Figure 7 Schematic diagram of the front cross-sectional structure of the middle locking member.

[0025] Among them, the reference numerals in the figure are:

[0026] 10. Workbench; 20. Foaming tank; 21. Discharge pipe; 211. Annular groove; 22. Limit plate; 221. Limit column; 30. Butt tube; 31. Sliding sleeve; 32. First hinge rod; 33. Hook; 331. Limit groove; 34. Second hinge rod; 35. Mounting table; 36. Insert sleeve; 37. Articulated seat; 40. Cleaning assembly; 41. Sliding rod; 411. Rotating shaft; 42. Guide sleeve; 43. Extension rod; 44. Cleaning brush; 50. Magnet; 60. Locking piece; 61. Limit block; 611. Guide column; 612. Abutment table; 613. Guide slope; 62. Connecting shell; 621. Sliding cavity; 63. Elastic piece; 70. Limit piece; 71. Bending part; 80. Threaded cap. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on another element or indirectly on another element. It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0029] See also Figures 1 to 8The polystyrene foaming device provided by the present invention is now described. The polystyrene foaming device comprises a workbench 10, a foaming tank 20, a butt joint tube 30, a first hinged rod 32, a second hinged rod 34 and a cleaning assembly 40. The foaming tank 20 is arranged on the workbench 10, and a discharge pipe 21 is arranged at the lower part of the foaming tank 20. The outer end of the discharge pipe 21 is provided with a limit plate 22 protruding toward the periphery; the butt joint tube 30 is arranged at the outer end of the discharge pipe 21, and the outer peripheral sliding sleeve of the butt joint tube 30 is provided with a sliding sleeve 31; the first hinged rod 32 is hinged to the end of the butt joint tube 30, and a hook 33 is connected to the first hinged rod 32. The first hinged rod 32 can be moved toward the outer periphery. The side close to the discharge pipe 21 is swung so that the hook 33 is hooked on the inner end surface of the limit plate 22; the second hinged rod 34 is hinged between the first hinged rod 32 and the sliding sleeve 31, and the sliding sleeve 31 can move toward the end of the docking tube 30 and drive the first hinged rod 32 to swing until the hook 33 is hooked on the inner end surface of the limit plate 22; the cleaning component 40 is arranged on the docking tube 30, and the cleaning component 40 has a cleaning brush 44 located at the outer end of the docking tube 30 and capable of sliding along the axial direction of the docking tube 30, and the cleaning brush 44 can extend into the discharge pipe 21 to clean the inner circumferential wall of the discharge pipe 21.

[0030] Furthermore, one end of the second hinged rod 34 is hinged to the extended end of the first hinged rod 32 , and the other end is hinged to the sliding sleeve 31 .

[0031] Furthermore, the sliding sleeve 31 is slidably connected to the butt joint 30 , so as to limit the rotation of the sliding sleeve 31 relative to the butt joint 30 .

[0032] Furthermore, a plurality of first hinge rods 32 are provided at intervals in the circumferential direction of the butt joint tube 30 , and a plurality of second hinge rods 34 are provided, and are arranged one-to-one corresponding to the plurality of first hinge rods 32 .

[0033] Furthermore, an annular groove 211 is coaxially arranged with the discharge pipe 21 on the outer end surface of the discharge pipe 21, and a plug sleeve 36 is provided on the end surface of the butt joint pipe 30 to be plugged into the annular groove 211, and the plug sleeve 36 is coaxially arranged with the butt joint pipe 30. This facilitates the butt joint pipe 30 and the discharge pipe 21 to be quickly positioned and plugged.

[0034] The embodiment of the present application provides a polystyrene foaming device. During its actual use, after the resin is foamed in the foaming tank 20, it is discharged through the discharge pipe 21 and the docking pipe 30 in turn. When the discharge pipe 21 needs to be cleaned, the cleaning brush 44 only needs to be inserted into the discharge pipe 21 and repeatedly moved axially.

[0035] When the cleaning assembly 40 needs to be disassembled, the sleeve 31 only needs to be slid away from the limiting disk 22 to disengage the hook 33 from the limiting disk 22, thereby releasing the lock between the docking tube 30 and the discharge tube 21, thereby achieving rapid disassembly of the cleaning assembly 40 and improving disassembly efficiency.

[0036] When it is necessary to install the cleaning component 40, the docking tube 30 is pressed against the outer end of the discharge tube 21, and the sleeve 31 is slid toward the direction close to the limit plate 22, so that the hook 33 can be hooked on the inner end surface of the limit plate 22, thereby completing the relative locking of the docking tube 30 and the discharge tube 21, and realizing the quick installation of the cleaning component 40.

[0037] Compared with the prior art, the polystyrene foaming device provided in this embodiment only requires sliding the sleeve 31 away from the limiting disk 22 when it is necessary to disassemble the cleaning component 40, so that the hook 33 can be disengaged from the limiting disk 22, thereby releasing the lock between the docking tube 30 and the discharge tube 21, thereby realizing rapid disassembly of the cleaning component 40 and improving disassembly efficiency.

[0038] In a possible implementation, the limit plate 22 is configured as follows: Figures 2 to 7 The structure shown, see Figures 2 to 7 The inner end surface of the limit plate 22 is provided with a limit column 221 extending along the axial direction of the discharge pipe 21, and the hook 33 is penetrated by a limit groove 331 for accommodating the limit column 221. The hook 33 can swing vertically until the limit column 221 enters the limit groove 331 to limit the circumferential position of the docking tube 30 and the discharge pipe 21.

[0039] Specifically, when the cleaning assembly 40 needs to be installed, the docking tube 30 is pressed against the outer end of the discharge tube 21, and the sleeve 31 is slid toward the direction close to the limit plate 22, so that the hook 33 can be hooked on the inner end surface of the limit plate 22, and the limit column 221 can enter the limit groove 331 at the same time, which not only completes the relative locking of the docking tube 30 and the discharge tube 21, but also limits the rotation of the docking tube 30 relative to the discharge tube 21.

[0040] In a possible implementation, the above-mentioned butt joint pipe 30 is adopted as follows Figures 2 to 7 The structure shown, see Figures 2 to 7 A mounting platform 35 protruding toward the outer circumference is provided at the end of the butt-jointed pipe 30 , the sliding sleeve 31 is located on the inner side of the mounting platform 35 , and the first hinge rod 32 is hinged on the mounting platform 35 .

[0041] Specifically, the arrangement of the mounting platform 35 not only facilitates the installation of the first hinge rod 32, but also can limit the sliding sleeve 31 to prevent the sliding sleeve 31 from detaching from the docking tube 30 during the process of moving toward one end of the docking tube 30 close to the limiting plate 22, and when the sliding sleeve 31 abuts against the mounting platform 35, the hook 33 is just hooked on the end surface of the limiting plate 22 away from the docking tube 30, thereby improving practicality.

[0042] In some embodiments, see Figure 5 The sliding sleeve 31 is an iron component, and a magnet 50 for adsorbing the sliding sleeve 31 is provided on the inner end surface of the mounting platform 35 .

[0043] Specifically, when it is necessary to install the cleaning assembly 40, the docking tube 30 is pressed against the outer end of the discharge tube 21 to release the sleeve 31. The sleeve 31 slides toward the limit plate 22 under the attraction of the magnet 50, so that the hook 33 can be hooked on the inner end surface of the limit plate 22 to complete the relative locking of the docking tube 30 and the discharge tube 21. Under the adsorption of the magnet 50 on the sleeve 31, the axial position of the sleeve 31 is stably locked to prevent the sleeve 31 from being separated from the magnet 50 due to unexpected situations such as vibration.

[0044] In some embodiments, see Figure 1 , Figure 2 , Figure 4 and Figure 6 The cleaning assembly 40 includes two slide bars 41, two guide sleeves 42 and an extension rod 43. The two slide bars 41 are symmetrically arranged on both sides of the docking tube 30 and extend outward along the axial direction of the docking tube 30; the two guide sleeves 42 are slidably sleeved on the outer periphery of the two slide bars 41 in a one-to-one correspondence; the extension rod 43 is arranged between the two slide bars 41 and is respectively connected to the two guide sleeves 42. The extension rod 43 extends toward the docking tube 30 along the axial direction of the docking tube 30. The cleaning brush 44 is connected to the extended end of the extension rod 43, and is used to penetrate the docking tube 30 and extend into the discharge tube 21 under the drive of the extension rod 43 to clean the inner circumferential wall of the discharge tube 21.

[0045] Specifically, when it is necessary to discharge the material, it is only necessary to slide the extension rod 43 to drive the cleaning brush 44 away from the docking tube 30. When it is necessary to clean the discharge pipe 21 after the discharge is completed, it is only necessary to slide the extension rod 43 to make the guide sleeve 42 reciprocate along the axial direction of the slide rod 41, that is, to drive the cleaning brush 44 to reciprocate in the discharge pipe 21 to clean the inner circumferential wall of the discharge pipe 21, thereby completing the cleaning of the discharge pipe 21.

[0046] When cleaning is not required, the guide sleeve 42 is slid to drive the cleaning brush 44 away from the butt joint 30 .

[0047] In some embodiments, see Figures 1 to 8 A hinge seat 37 is provided on the outer peripheral wall of the butt joint tube 30. The slide bar 41 is hinged to the hinge seat 37 through a rotating shaft 411 extending horizontally in a direction perpendicular to the main axis of the butt joint tube 30. The slide bar 41 can swing vertically. A locking piece 60 for limiting the swing position of the slide bar 41 is provided on the hinge seat 37. A limit block 61 is slidably connected to the locking piece 60. When the slide bar 41 swings to a horizontal state, the limit block 61 can move to the bottom of the slide bar 41 to limit the swing position of the slide bar 41.

[0048] Specifically, when not cleaning, the slide bar 41 is swung downward to make the cleaning brush 44 swing to the bottom of the butt joint tube 30 to avoid the butt joint tube 30 and facilitate the discharge of the butt joint tube 30 .

[0049] When it is necessary to clean the discharge pipe 21, the slide bar 41 is swung upward to a horizontal state, and the limit block 61 is slid to the bottom of the slide bar 41 to limit the slide bar 41, and the slide bar 41 is released. The slide bar 41 is placed on the limit block 61, and the slide bar 41 is always kept in a horizontal state. This state just makes the cleaning brush 44 face the docking tube 30, and the extension rod 43 is slid to make the guide sleeve 42 slide back and forth along the axial direction of the slide bar 41, that is, the cleaning brush 44 is driven to move back and forth in the discharge pipe 21 to clean the inner circumferential wall of the discharge pipe 21, thereby completing the cleaning of the discharge pipe 21.

[0050] In some embodiments, see Figures 1 to 8 The locking member 60 includes a connecting shell 62 and an elastic member 63. The connecting shell 62 is connected to the hinge seat 37 and is located on the outer side of the slide rod 41. The connecting shell 62 has a sliding cavity 621 with an opening toward the docking tube 30. The limit block 61 is slidably connected in the sliding cavity 621. One end of the elastic member 63 is connected to the inner bottom wall of the sliding cavity 621 and the other end is connected to the limit block 61, so as to elastically push the limit block 61 toward the direction close to the docking tube 30.

[0051] Specifically, when not cleaning, the slide bar 41 is swung downward to make the cleaning brush 44 swing to the bottom of the butt joint tube 30 to avoid the butt joint tube 30 and facilitate the discharge of the butt joint tube 30 .

[0052] When it is necessary to clean the discharge pipe 21, first press the limit block 61 into the sliding cavity 621. At this time, the limit block 61 compresses the elastic member 63, swings the slide bar 41 upward to a horizontal state, and releases the limit block 61. The limit block 61 slides to the bottom of the slide bar 41 under the push of the elastic member 63, so that it limits the slide bar 41, releases the slide bar 41, and the slide bar 41 is placed on the top of the limit block 61, so that the slide bar 41 is always in a horizontal state. This state just makes the cleaning brush 44 face the docking tube 30, and slides the extension rod 43 to make the guide sleeve 42 slide back and forth along the axial direction of the slide bar 41, that is, drives the cleaning brush 44 to move back and forth in the discharge pipe 21 to clean the inner circumferential wall of the discharge pipe 21, thereby completing the cleaning of the discharge pipe 21.

[0053] Furthermore, the end of the limit block 61 close to the butt joint pipe 30 has a guide slope 613 extending obliquely downward, and the guide slope 613 gradually moves away from the butt joint pipe 30 from top to bottom. The setting of the guide slope 613 can directly swing up the slide bar 41, so that the slide bar 41 contacts the guide slope 613, thereby gradually pushing the limit block 61 into the sliding cavity 621. After the slide bar 41 swings up to the top of the limit block 61, the limit block 61 slides to the bottom of the slide bar 41 under the push of the elastic member 63 to limit the slide bar 41. During the swing-up process of the slide bar 41, there is no need to manually press the limit block 61, thereby improving the swing-up efficiency of the slide bar 41.

[0054] In some embodiments, see Figure 8The inner end of the limit block 61 is connected to a guide column 611 which horizontally penetrates the inner bottom wall of the sliding cavity 621 and is slidably matched with the connecting shell 62 , and the elastic member 63 is sleeved on the outer periphery of the guide column 611 .

[0055] Specifically, the outer end of the guide column 611 is connected to an abutment platform 612 for abutting against the outer wall of the connecting shell 62. When the limit of the sliding rod 41 needs to be released, it is only necessary to pull the abutment platform 612 to drive the limit block 61 to retract into the sliding cavity 621, thereby improving practicality.

[0056] In some embodiments, see Figures 2 to 7 The hinged end of the slide rod 41 is connected to the limiting member 70 . When the slide rod 41 swings to a horizontal state, the limiting member 70 can press against the inner end surface of the slide sleeve 31 to limit the axial displacement of the slide sleeve 31 .

[0057] Specifically, the stopper 70 has a bent portion 71 extending horizontally toward the butt joint pipe 30. When the slide bar 41 swings to the horizontal state, the bent portion 71 approaches and presses against the end of the sleeve 31 away from the mounting platform 35 to limit the axial movement of the sleeve 31, so that the hook 33 is stably hooked on the limit plate 22 to prevent the butt joint pipe 30 from being separated from the discharge pipe 21.

[0058] Furthermore, a flexible pad is provided on the end surface of the sliding sleeve 31 close to the magnet 50 to adapt to the deformation amount generated in the process of the bending portion 71 squeezing the sliding sleeve 31 and avoid damage to the limiter 70 and the sliding sleeve 31.

[0059] In some embodiments, see Figure 1 , Figure 2 , Figure 4 and Figure 6 The outer end threaded sleeve of the slide rod 41 is provided with a threaded cap 80 , and the threaded cap 80 is used to contact and cooperate with the guide sleeve 42 to limit the axial displacement of the guide sleeve 42 .

[0060] Specifically, the setting of the threaded cap 80 can be used to limit the guide sleeve 42 to prevent the guide sleeve 42 from being separated from the slide rod 41. At the same time, after the threaded cap 80 is removed, the guide sleeve 42 can be separated from the slide rod 41, even if the cleaning brush 44 is removed and replaced separately, thereby improving practicality.

[0061] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A polystyrene foaming device, characterized in that: include: Workbench; A foaming tank is arranged on the workbench, and a discharge pipe is provided at the lower part of the foaming tank, and a limiting plate protruding toward the outer circumference is provided at the outer end of the discharge pipe; A butt joint pipe is arranged at the outer end of the discharge pipe, and a sliding sleeve is arranged on the outer peripheral sliding sleeve of the butt joint pipe; A first hinged rod, hinged to the end of the butt-jointed tube, a hook connected to the first hinged rod, and the first hinged rod can swing toward a side close to the discharge tube so that the hook is hooked on the inner end surface of the limit plate; A second hinged rod is hinged between the first hinged rod and the sliding sleeve, and the sliding sleeve can move toward the end of the butt-jointed tube and drive the first hinged rod to swing until the hook is hooked on the inner end surface of the limiting plate; A cleaning assembly is arranged on the butt joint pipe, and the cleaning assembly has a cleaning brush located at the outer end of the butt joint pipe and capable of sliding along the axial direction of the butt joint pipe, and the cleaning brush can extend into the discharge pipe to clean the inner peripheral wall of the discharge pipe; The end of the butt joint pipe is provided with a mounting platform protruding toward the outer circumference, the sliding sleeve is located on the inner side of the mounting platform, and the first hinged rod is hinged to the mounting platform; The sliding sleeve is an iron component, and a magnet for adsorbing the sliding sleeve is provided on the inner end surface of the mounting platform; The cleaning assembly includes two slide bars, two guide sleeves and an extension rod, the two slide bars are symmetrically arranged on both sides of the butt joint tube and extend outward along the axial direction of the butt joint tube; the two guide sleeves are slidably sleeved on the outer periphery of the two slide bars in a one-to-one correspondence; the extension rod is arranged between the two slide bars and is respectively connected to the two guide sleeves, the extension rod extends toward the butt joint tube along the axial direction of the butt joint tube, the cleaning brush is connected to the extension end of the extension rod, and is used to penetrate the butt joint tube and extend into the discharge tube under the drive of the extension rod to clean the inner peripheral wall of the discharge tube; A hinge seat is provided on the outer peripheral wall of the butt joint tube, the slide bar is hinged to the hinge seat through a rotating shaft extending horizontally in a direction perpendicular to the main axis of the butt joint tube, the slide bar can swing vertically, a locking piece for limiting the swing position of the slide bar is provided on the hinge seat, a limiting block is slidably connected to the locking piece, and when the slide bar swings to a horizontal state, the limiting block can move to the bottom of the slide bar to limit the swing position of the slide bar; and The hinged end of the slide rod is connected to a limiting member, and when the slide rod swings to a horizontal state, the limiting member can press against the inner end surface of the slide sleeve to limit the axial displacement of the slide sleeve.

2. The polystyrene foaming device according to claim 1, characterized in that: The inner end surface of the limit plate is provided with a limit column extending along the axial direction of the discharge pipe, and the hook is penetrated by a limit groove for accommodating the limit column. The hook can swing vertically until the limit column enters the limit groove to limit the circumferential position of the docking tube and the discharge pipe.

3. The polystyrene foaming device according to claim 1, characterized in that: The locking member comprises: A connecting shell connected to the hinge seat and located outside the sliding rod, the connecting shell having a sliding cavity opening toward the butt joint tube, the limit block being slidably connected in the sliding cavity; and An elastic member, one end of which is connected to the inner bottom wall of the sliding cavity and the other end of which is connected to the limit block, is used to elastically push the limit block toward the direction close to the butt joint pipe.

4. The polystyrene foaming device according to claim 3, characterized in that: The inner end of the limit block is connected with a guide column which horizontally penetrates the inner bottom wall of the sliding cavity and is slidably matched with the connecting shell, and the elastic member is sleeved on the outer periphery of the guide column.

5. The polystyrene foaming device according to claim 1, characterized in that: The outer end threaded sleeve of the slide rod is provided with a threaded cap, and the threaded cap is used for contacting and cooperating with the guide sleeve to limit the axial displacement of the guide sleeve.

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