Novel feeding and pressing device of internal mixer

Abstract

The invention discloses a novel internal mixer feeding and pressing device, and relates to the technical field of internal mixers.The novel internal mixer feeding and pressing device comprises a feeding cylinder, the top of the feeding cylinder is connected with a transition plate, and the two sides of the feeding cylinder are each connected with an upper ram oil cylinder; the cross beam is connected with the telescopic ends of the two top peg oil cylinders; the bottom of the piston rod is connected with an upper top bolt, the upper top bolt is connected with a hose, the outer side of the hose is sleeved with a protective sleeve, the protective sleeve and the upper end of the piston rod both penetrate through the transition plate in a sliding mode, a first sealing assembly is arranged between the protective sleeve and the transition plate, and the top end of the piston rod is connected with the cross beam; a buffering assembly is fixed to the top of the transition plate. Through the arrangement of the buffering assembly, buffering can be carried out when the position of the cross beam falls to the lowest position, large impact sound and damage to equipment are avoided, and through the arrangement of the sealing assembly and the connecting assembly, material leakage and equipment abrasion are reduced, and environmental pollution is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of internal mixers, in particular to a new type of internal mixer feeding and pressing device. BACKGROUND

[0002] In the production process of rubber, plastic and chemical products, the internal mixer is a commonly used mixing equipment for uniformly mixing various raw materials. The feeding and pressing device is a key component of the internal mixer, which realizes the conveying, pressing and sealing of materials through the coordinated work of mechanical structures, and its performance directly affects the mixing efficiency and quality of the rubber compound.

[0003] The traditional internal mixer feeding and pressing device usually adopts a simple mechanical structure, lacks effective buffering and sealing design, and is prone to leakage and wear under high pressure operating conditions, thereby affecting the mixing quality and service life of the equipment. In addition, the traditional device often uses rigid connection when connecting parts, which lacks flexibility and stability, and is prone to looseness and damage during long-term operation. SUMMARY

[0004] The purpose of the present application is to provide a new type of internal mixer feeding and pressing device to solve the problems raised in the background art.

[0005] In order to achieve the above purpose, the present application provides the following technical scheme: a new type of internal mixer feeding and pressing device, comprising: A feeding cylinder, a transition plate is connected to the top of the feeding cylinder, and an upper jack oil cylinder is connected to both sides of the feeding cylinder, and the cylinder body of the upper jack oil cylinder is fixedly penetrated through the transition plate; A cross beam is located above the transition plate, the cross beam is connected to the telescopic ends of the two upper jack oil cylinders, and a first connection assembly is provided between the telescopic ends of the upper jack oil cylinders and the cross beam; A piston rod is nested in the feeding cylinder, an upper jack is connected to the bottom of the piston rod, a second connection assembly is provided between the upper jack and the piston rod, a hose is connected to the upper jack, a sheath is sleeved on the outside of the hose, the sheath and the upper end of the piston rod are both slidingly penetrated through the transition plate, a first sealing assembly is provided between the sheath and the transition plate, a second sealing assembly is provided between the piston rod and the transition plate, the top end of the piston rod is connected to the cross beam, and an upper jack stroke switch is installed on the sheath. A buffer assembly is fixed to the top of the transition plate, and the buffer assembly is sleeved on the outside of the piston rod.

[0006] Further, the first connecting assembly comprises a first flange, a first copper sleeve and a second transition joint, the first flange and the second transition joint are sequentially installed on the end of the upper jack cylinder telescopic end, the first copper sleeve is installed between the first flange and the second transition joint, the first flange is connected with the crossbeam, the end of the second transition joint adopts a circular arc structure, and the outer circle of the second transition joint adopts an approximate elliptical shape, so that the swing of the crossbeam in the movement does not damage the upper jack cylinder, and the stress concentration point can be concentrated outside the cylinder rod, and the grease is injected at the contact position of the second transition joint and the crossbeam; Through the design of the first connecting assembly, the connection stability between the crossbeam and the upper jack cylinder is ensured, the loosening under high pressure is prevented, the grease is injected at the contact position of the second transition joint and the crossbeam, the friction is reduced, and the service life is prolonged.

[0007] Further, the two sides of the feeding cylinder are provided with cylinder supports corresponding to the bottom end position of the cylinder body of the upper jack cylinder, the cylinder supports are connected with the bottom end of the cylinder body of the upper jack cylinder, and the stable support of the cylinder body of the upper jack cylinder is prevented from being deformed and damaged under high pressure.

[0008] Further, the upper jack is a water passing structure, water inlets and water outlets are respectively arranged on the left side and the right side of the upper jack, and a first transition joint is connected between the water inlet of the upper jack and a hose; The first sealing assembly comprises a packing seat, a first O-shaped ring is arranged between the lower end of the packing seat and the sheath, a second O-shaped ring is arranged between the lower part of the outer side of the packing seat and the transition plate, a pressing ring is arranged between the upper end of the packing seat and the sheath, a first packing is arranged on the outer side of the upper end of the packing seat, and a packing gland is nested on the end of the packing seat; The first transition joint is connected with the hose to enter cold water and discharge hot water, so that cooling is performed, deformation and damage under high temperature are prevented, the hose also has a buffering effect, water leakage in the movement is avoided, the sheath is sleeved outside the hose and is used for protecting the hose and assisting positioning of the upper jack in the movement, and the first sealing assembly ensures the sealing performance between the sheath and the transition plate and prevents material leakage.

[0009] Further, the second connecting assembly comprises a second flange, the lower end of the piston rod is connected with the upper jack through the second flange, a cover plate is arranged above the second flange, an oil seal is arranged between the cover plate and the piston rod, an upper baffle is arranged above the cover plate, and the upper part of the upper baffle adopts an inclined surface design to avoid dust accumulation; The second connecting assembly ensures the connection stability between the piston rod and the upper jack and prevents loosening under high pressure, the oil seal is designed to ensure the sealing performance between the cover plate and the piston rod and prevent grease leakage and pollution of the rubber material.

[0010] Further, the lower end of the piston rod is provided with a conical structure, which is convenient for processing and bears force evenly, increases the contact area when swinging, and the connecting cavity of the piston rod and the upper jack is injected with lubricating grease, which reduces friction and prolongs service life.

[0011] Further, the upper end of the piston rod is provided with a nut, the rod body of the piston rod in the crossbeam is provided with a third copper sleeve, which reduces friction and prolongs service life.

[0012] Further, the second sealing assembly comprises a copper pressing sleeve and a second copper sleeve, the copper pressing sleeve is located below the second copper sleeve, a second packing is arranged between the second copper sleeve and the copper pressing sleeve, and the contact position of the second copper sleeve and the piston rod is injected with lubricating grease, which reduces friction and wear of the piston rod, the design of the second sealing assembly ensures the sealing performance between the piston rod and the transition plate, prevents material leakage, and avoids the entry of lubricating grease into the rubber.

[0013] Further, the feeding cylinder comprises a rear wall plate, a front wall lower part, a left wall plate, a front wall upper part and a right wall plate, the rear wall plate, the front wall lower part, the left wall plate, the front wall upper part and the right wall plate are fixed by welding, and each part of the feeding cylinder is made of steel plate, which ensures the structural strength of the device and prevents deformation and damage under high pressure. The top end of the front wall lower part is provided with a feeding door, the front wall upper part is provided with an exhaust port, the front wall upper part is provided with an exhaust cover corresponding to the exhaust port, the exhaust cover is connected with a dust removal cover, the dust removal cover is connected with an external exhaust system, and the exhaust cover and the dust removal cover cooperate to suck away the smoke dust in the internal mixer, thereby achieving good dust removal effect. The inclined surface sealing structure between the feeding door and the front wall upper part ensures the sealing performance between the feeding door and the front wall upper part, and prevents material leakage. The upper jack is slidingly nested in the feeding cylinder, the contact surface of the upper jack in the feeding cylinder is sprayed with a 1mm thick wear-resistant alloy, and the four corners of the upper jack are stacked with a stainless steel layer, so that the whole is more wear-resistant and the service life is prolonged.

[0014] Further, the buffer assembly comprises a spring seat, a butterfly spring, a clasp ring, a shaft retainer, a clamping sleeve and a nylon buffer pad, a plurality of butterfly springs are arranged on the spring seat, the upper end of the spring seat is provided with a clasp ring and a shaft retainer, the nylon buffer pad is located on the upper side of the clasp ring, and the nylon buffer pad is fixed on the transition plate through the clamping sleeve. The buffer assembly can buffer when the crossbeam position falls to the lowest, avoid loud impact sound, and damage the equipment. The buffer assembly absorbs pressure and impact through the butterfly spring and the nylon buffer pad, has a longer service life, and has a better effect.

[0015] The technical effects and advantages provided by the present invention in the above technical solution are as follows: 1. The top plug is a water-passing structure. The top plug has an inlet and an outlet on its left and right sides, respectively. The inlet of the top plug is connected to the hose through the first transition joint to allow cold water to enter and hot water to exit, thus cooling the plug and preventing deformation and damage at high temperatures. The hose also acts as a buffer to prevent water leakage during movement. The sheath is fitted on the outside of the hose to protect it and to assist in positioning the top plug during movement. The first sealing component ensures the sealing performance between the sheath and the transition plate to prevent material leakage. 2. The telescopic end of the upper jack cylinder is connected to the crossbeam through the first connecting assembly. The first copper sleeve in the first connecting assembly is used to absorb the impact during movement. The end of the second transition joint in the first connecting assembly adopts an arc structure. The outer circle of the second transition joint adopts an approximately elliptical shape so that the swing of the crossbeam during movement will not damage the upper jack cylinder. It can also concentrate the force on the outside of the cylinder rod to avoid the second transition joint and the upper jack cylinder from breaking and being damaged. 3. The piston rod and the upper plug are connected by a second connecting assembly, which is simple and convenient and avoids the risk of piston rod breakage. The piston rod head adopts a conical structure, which is easy to process and distributes the force evenly, increasing the contact area during swinging. The cavity where it connects with the upper plug is filled with grease to reduce damage to the piston rod. The top is sealed with an oil seal to prevent leakage and contamination of the rubber material. 4. All components of the feeding cylinder are made of steel plates, and the wall panels are fixed by welding to ensure the structural strength of the device and prevent deformation and damage under high pressure. The contact surface between the feeding cylinder and the top bolt is sprayed with a 1mm thick wear-resistant alloy, and the four corners of the top bolt are overlaid with stainless steel, making the whole device more wear-resistant and extending its service life. 5. The feeding cylinder is equipped with an exhaust hood, which is connected to a dust collector hood. The dust collector hood is connected to an external ventilation system. The exhaust hood and the dust collector hood work together to remove smoke and dust from inside the internal mixer, resulting in good dust removal effect. 6. At the sliding joint between the piston rod and the transition plate, the second copper sleeve is used for lubrication to reduce piston rod wear. In addition, the lower copper pressure sleeve and the second packing provide further sealing to prevent grease from entering the rubber material and to prevent internal dust from leaking out at this point. 7. The piston rod and the crossbeam are connected and fixed by nuts. A third copper sleeve is added in the middle to buffer the impact and facilitate subsequent disassembly, preventing the piston rod from jamming directly with the crossbeam. 8. A buffer assembly is fixed to the top of the transition plate, which can buffer when the crossbeam is at its lowest position, avoiding loud impact noise and damage to the equipment. The buffer assembly absorbs pressure and impact through a disc spring and a nylon buffer pad, resulting in a longer service life and better performance. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a side sectional view of the present invention; Figure 3 For the present invention Figure 1 Enlarged view of part A; Figure 4 For the present invention Figure 1 Enlarged view of part B; Figure 5 For the present invention Figure 2 Enlarged view of part C; Figure 6 For the present invention Figure 2 Enlarged view of part D; Figure 7 This is a cross-sectional view of the feeding cylinder of the present invention; Figure 8 This is a top view of the feeding cylinder of the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Top bolt; 2. First transition joint; 3. Hoses; 4. Sheath; 5. Packing seat; 6. First O-ring; 7. Second O-ring; 8. Pressure ring; 9. First packing; 10. Packing gland; 11. Top bolt cylinder; 12. First flange; 13. First copper sleeve; 14. Second transition joint; 15. Second flange; 16. Cover plate; 17. Oil seal; 18. Upper baffle; 19. Piston rod; 20. Feed cylinder; 21. Transition plate; 22. Copper pressure sleeve; 23. 24. Second copper sleeve; 25. Buffer assembly; 26. Crossbeam; 27. Third copper sleeve; 28. Nut; 29. ​​Feeding door; 30. Exhaust hood; 31. Dust hood; 32. Top bolt limit switch; 33. Cylinder support; 34. Rear wall panel; 35. Lower part of front wall; 36. Left wall panel; 37. Upper part of front wall; 38. Right wall panel; 39. Spring seat; 40. Butterfly spring; 41. Snap ring; 42. Shaft retaining ring; 43. Sleeve; 44. Nylon buffer pad. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0020] This invention provides a novel feeding and pressing device for an internal mixer, such as... Figure 1 ,Figure 2 , Figure 4 and Figure 6 As shown, it includes: The feeding cylinder 20 has a transition plate 21 connected to its top, and upper top bolt cylinders 11 are connected to both sides of the feeding cylinder 20. The cylinder body of the upper top bolt cylinder 11 is fixed through the transition plate 21. The crossbeam 26 is located above the transition plate 21 and is connected to the telescopic ends of the two upper top bolt cylinders 11. Piston rod 19 is nested inside feed cylinder 20. The bottom of piston rod 19 is connected to upper top bolt 1. A second connecting assembly is provided between upper top bolt 1 and piston rod 19. A hose 3 is connected to upper top bolt 1. A sheath 4 is sleeved on the outside of hose 3. The sheath 4 and the upper end of piston rod 19 both slide through transition plate 21. A first sealing assembly is provided between sheath 4 and transition plate 21. A second sealing assembly is provided between piston rod 19 and transition plate 21. The top of piston rod 19 is connected to crossbeam 26. Upper top bolt limit switch 32 is installed on sheath 4. The top plug 1 is a water-passing structure. The left and right sides of the top plug 1 are respectively provided with water inlet and water outlet. The water inlet of the top plug 1 is connected to the hose 3 by a first transition joint 2. The first sealing assembly includes a packing seat 5, a first O-ring 6 between the lower end of the packing seat 5 and the sheath 4, a second O-ring 7 between the lower outer part of the packing seat 5 and the transition plate 21, a pressure ring 8 between the upper end of the packing seat 5 and the sheath 4, a first packing 9 on the outer side of the upper end of the packing seat 5, and a packing gland 10 nested at the end of the packing seat 5. The first transition joint 2 is connected to the hose 3 to allow cold water to enter and hot water to exit, thus cooling the hose and preventing deformation and damage at high temperatures. The hose 3 also acts as a buffer to prevent water leakage during movement. The sheath 4 is fitted onto the outside of the hose 3 to protect it and to assist in positioning the top bolt 1 during movement. The first sealing assembly ensures the sealing performance between the sheath 4 and the transition plate 21 to prevent material leakage.

[0021] The second connecting assembly includes a second flange 15. The lower end of the piston rod 19 is connected to the upper bolt 1 through the second flange 15. A cover plate 16 is provided above the second flange 15. An oil seal 17 is provided between the cover plate 16 and the piston rod 19. An upper baffle 18 is provided above the cover plate 16. The upper part of the upper baffle 18 is designed with a slope to avoid dust accumulation. The second connecting component ensures the stability of the connection between the piston rod 19 and the upper bolt 1, preventing loosening under high pressure. The design of the oil seal 17 ensures the sealing performance between the cover plate 16 and the piston rod 19, preventing grease leakage and contamination of the adhesive.

[0022] The lower end of the piston rod 19 has a conical head, which is easy to process and distributes force evenly, increasing the contact area during swinging. The connection cavity between the piston rod 19 and the upper plug 1 is filled with grease, which reduces friction and extends service life.

[0023] The upper end of the piston rod 19 is threaded through the crossbeam 26 and fitted with a nut 28. The piston rod 19, which is inside the crossbeam 26, is fitted with a third copper sleeve 27, which reduces friction and extends service life.

[0024] The second sealing assembly includes a copper pressure sleeve 22 and a second copper sleeve 24. The copper pressure sleeve 22 is located below the second copper sleeve 24. A second packing 23 is provided between the second copper sleeve 24 and the copper pressure sleeve 22. The contact area between the second copper sleeve 24 and the piston rod 19 is filled with grease to reduce friction and reduce wear on the piston rod 19. Through the design of the second sealing assembly, the sealing performance between the piston rod 19 and the transition plate 21 is ensured, preventing material leakage and avoiding grease from entering the adhesive.

[0025] like Figure 1 and Figure 3 As shown, a first connecting assembly is provided between the telescopic end of the upper jack cylinder 11 and the crossbeam 26. The first connecting assembly includes a first flange 12, a first copper sleeve 13, and a second transition joint 14. The first flange 12 and the second transition joint 14 are sequentially installed at the ends of the telescopic end of the upper jack cylinder 11. The first copper sleeve 13 is installed between the first flange 12 and the second transition joint 14. The first flange 12 is connected to the crossbeam 26. The end of the second transition joint 14 adopts an arc structure. The outer circle of the second transition joint 14 adopts an approximately elliptical shape. Lubricating grease is injected at the contact point between the second transition joint 14 and the crossbeam 26.

[0026] On both sides of the feeding cylinder 20, corresponding to the bottom of the cylinder body of the upper top bolt cylinder 11, cylinder supports 33 are installed, and the cylinder supports 33 are connected to the bottom of the cylinder body of the upper top bolt cylinder 11.

[0027] The cylinder support 33 provides stable support for the upper jack cylinder 11, preventing deformation and damage under high pressure. The design of the first connecting component ensures the connection stability between the crossbeam 26 and the upper jack cylinder 11, preventing loosening under high pressure. Lubricating grease is injected at the contact point between the second transition joint 14 and the crossbeam 26 to reduce friction and extend service life. The end of the second transition joint 14 adopts an arc structure, and the outer circle of the second transition joint 14 adopts an approximately elliptical shape to ensure that the swing of the crossbeam 26 during movement will not damage the upper jack cylinder 11, and the force concentration point is also on the outside of the cylinder rod.

[0028] like Figure 2 , Figure 7 and Figure 8As shown, the feeding cylinder 20 includes a rear wall plate 34, a lower front wall 35, a left wall plate 36, an upper front wall 37, and a right wall plate 38. The rear wall plate 34, the lower front wall 35, the left wall plate 36, the upper front wall 37, and the right wall plate 38 are fixed by welding. All components of the feeding cylinder 20 are made of steel plates, which ensures the structural strength of the device and prevents deformation and damage under high pressure. A feeding door 29 is installed at the top of the lower part 35 of the front wall. The feeding door 29 and the upper part 37 of the front wall adopt a beveled sealing structure to ensure the sealing performance between the feeding door 29 and the upper part 37 of the front wall and prevent material leakage. The upper top bolt 1 is slidably nested inside the feeding cylinder 20. The contact surface between the upper top bolt 1 and the feeding cylinder 20 is sprayed with a 1mm thick wear-resistant alloy. The four corners of the upper top bolt 1 are overlaid with stainless steel layers, making the whole more wear-resistant and extending its service life.

[0029] like Figure 2 As shown, an exhaust port is provided on the upper part 37 of the front wall, and an exhaust hood 30 is installed on the upper part 37 of the front wall corresponding to the exhaust port. The exhaust hood 30 is connected to a dust removal hood 31, and the dust removal hood 31 is connected to an external ventilation system. The exhaust hood 30 and the dust removal hood 31 work together to remove smoke and dust from inside the internal mixer, resulting in a good dust removal effect.

[0030] like Figure 2 and Figure 5 As shown, a buffer assembly 25 is fixed to the top of the transition plate 21. The buffer assembly 25 is sleeved on the outside of the piston rod 19. The buffer assembly 25 includes a spring seat 39, a butterfly spring 40, a retaining ring 41, a shaft retaining ring 42, a sleeve 43, and a nylon buffer pad 44. Multiple butterfly springs 40 are provided and are installed on the spring seat 39. The upper end of the spring seat 39 is equipped with a retaining ring 41 and a shaft retaining ring 42. The nylon buffer pad 44 is located on the upper side of the retaining ring 41 and is fixed to the transition plate 21 by the sleeve 43.

[0031] The buffer assembly 25 is designed to cushion the impact when the crossbeam 26 is at its lowest position, preventing loud impact noise and damage to the equipment. The buffer assembly 25 absorbs pressure and impact through the disc spring 40 and the nylon buffer pad 44, resulting in a longer service life and better performance.

[0032] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. 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and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston rod and piston ​ ​ ​ ​ 2. A new type of feeding and pressing device for an internal mixer according to claim 1, characterized in that: ​ 3. A new type of feeding and pressing device for an internal mixer according to claim 1, characterized in that: ​ 4. A new type of feeding and pressing device for an internal mixer according to claim 1, characterized in that: ​ ​ 5. A new type of feeding and pressing device for an internal mixer according to claim 1, characterized in that: The second connecting assembly comprises a second flange (15), the lower end of the piston rod (19) is connected with the jacking bolt (1) through the second flange (15), a cover plate (16) is arranged above the second flange (15), an oil seal (17) is arranged between the cover plate (16) and the piston rod (19), an upper baffle (18) is arranged above the cover plate (16), and the upper portion of the upper baffle (18) is designed in a slope.

6. A new type of feeding and pressing device for an internal mixer according to claim 1, characterized in that: The lower end head of the piston rod (19) is designed in a conical structure, and the connecting cavity of the piston rod (19) and the jacking bolt (1) is injected with lubricating grease.

7. A new type of feeding and pressing device for an internal mixer according to claim 1, characterized in that: The upper end of the piston rod (19) is threadedly sleeved with a nut (28) penetrating through the cross beam (26), and the rod body of the piston rod (19) in the cross beam (26) is sleeved with a third copper sleeve (27).

8. A new type of feeding and pressing device for an internal mixer according to claim 1, characterized in that: The second sealing assembly comprises a copper pressing sleeve (22) and a second copper sleeve (24), the copper pressing sleeve (22) is located below the second copper sleeve (24), a second packing (23) is arranged between the second copper sleeve (24) and the copper pressing sleeve (22), and the contact position of the second copper sleeve (24) and the piston rod (19) is injected with lubricating grease.

9. A new type of feeding and pressing device for an internal mixer according to claim 1, characterized in that: The feeding cylinder (20) comprises a rear wall plate (34), a front wall lower portion (35), a left wall plate (36), a front wall upper portion (37) and a right wall plate (38), the rear wall plate (34), the front wall lower portion (35), the left wall plate (36), the front wall upper portion (37) and the right wall plate (38) are fixed by welding, the components of the feeding cylinder (20) are made of steel plates, the top end of the front wall lower portion (35) is provided with a feeding door (29), the front wall upper portion (37) is provided with an exhaust port, the front wall upper portion (37) is provided with an exhaust cover (30) corresponding to the position of the exhaust port, the exhaust cover (30) is connected with a dust removal cover (31), and the dust removal cover (31) is connected with an external air extraction system. An inclined sealing structure is arranged between the feeding door (29) and the front wall upper portion (37). The jacking bolt (1) is slidingly nested in the feeding cylinder (20), the contact surface of the jacking bolt (1) in the feeding cylinder (20) is sprayed with a 1mm-thick wear-resistant alloy, and a stainless steel layer is built up on the four corners of the jacking bolt (1).

10. A new type of feeding and pressing device for an internal mixer according to claim 1, characterized in that: The buffer assembly (25) comprises a spring seat (39), a butterfly spring (40), a snap ring (41), a shaft retaining ring (42), a clamping sleeve (43) and a nylon buffer pad (44), a plurality of butterfly springs (40) are arranged on the spring seat (39), the upper end of the spring seat (39) is provided with the snap ring (41) and the shaft retaining ring (42), the nylon buffer pad (44) is located on the upper side of the snap ring (41), and the nylon buffer pad (44) is fixed on the transition plate (21) through the clamping sleeve (43).

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