A device for replacing a screen in a horizontal extruder

Abstract

The utility model discloses a horizontal extruding machine screen cloth replacement's device, including being used for with the special tooling backing plate of horizontal extruding machine's main part, gate valve and cooperation of hoisting device, the special tooling backing plate is detachably arranged between main part and gate valve under the screen cloth replacement state, the gate valve includes valve plate and frame, and the frame sets up on the main part upside, is equipped with the valve plate insertion slot of being suitable for the shape of valve plate in the main part inside, and the valve plate sets up in the valve plate insertion slot, and is equipped with the guide structure between valve plate and frame, and the hoisting device includes drive link and power source, and the frame is equipped with the first connecting hole of being suitable for drive link, and the valve plate is equipped with the first connecting piece, and one end of drive link passes through first connecting hole and is fixedly connected with first connecting piece. Through hoisting device and lift the gate valve, detachably fixed special tooling backing plate between main part and gate valve, realize the replacement of screen cloth, and it utilizes horizontal extruding machine self part, need not special hoisting equipment, can more convenient and fast replacement screen cloth.

Description

Technical Field

[0001] This utility model mainly relates to the field of horizontal extrusion presses, specifically a device for replacing the screen of a horizontal extrusion press. Background Technology

[0002] The maintenance and replacement of wear parts in the discharge screen of a horizontal extruder has always been a major challenge for designers and maintenance personnel. Chinese patent document CN105618505A discloses a device and its method for assisting in the replacement of the extrusion cylinder in a horizontal extruder. However, the replacement of internal parts in a horizontal extruder requires the assistance of other equipment. Similarly, replacing the screen of a horizontal extruder also requires specialized lifting equipment. However, due to the compact structure of horizontal extruders and the complex actual production environment, lifting equipment often lacks sufficient operating space, increasing the difficulty of screen disassembly and replacement. Furthermore, due to space and structural limitations, existing technologies have consistently used integrated screen assemblies. When internal wear parts need replacement, the only option is complete disassembly and replacement of reinforcing ribs, barrel bars, flanges, etc., increasing production costs. Utility Model Content

[0003] To solve the aforementioned technical problems, the technical solution of this utility model is to provide a device for screen replacement using components of a horizontal extruder, the specific solution of which is as follows:

[0004] A device for replacing the screen of a horizontal extruder includes a special tooling pad for cooperating with the main body of the horizontal extruder, a gate valve, and a lifting device. When replacing the screen, the special tooling pad is detachably installed between the main body and the gate valve. The gate valve includes a valve plate and a frame. The frame is located on the upper side of the main body of the horizontal extruder, and fasteners are provided between the frame and the main body. The main body has a valve plate slot adapted to the shape of the valve plate, and the valve plate is disposed within the valve plate slot. A guide structure is provided between the valve plate and the frame. The lifting device includes a drive rod and a power source. The frame has a first connecting hole adapted to the drive rod, and the valve plate has a first connecting member. One end of the drive rod passes through the first connecting hole and is fixedly connected to the first connecting member.

[0005] The gate valve is raised and lowered by a lifting device. When the gate valve rises to the designated position, a special tooling pad is set between the main body and the frame to realize the replacement of the screen.

[0006] Furthermore, the main body includes a screen assembly, which includes a screen and a screen frame. The screen frame is fitted over the screen, and the outer wall size of the screen is adapted to the inner wall size of the screen frame. The screen includes a first end face and a second end face. A valve plate is pressed against the first end face, and the screen frame is provided with a retaining ring, which is pressed against the second end face.

[0007] By making the screen and screen frame detachable, the screen can be disassembled and assembled more easily, and the screen frame and other parts that are not easily damaged can continue to be used, thus reducing costs.

[0008] Furthermore, the guiding structure includes a guide rod, the frame has a second connecting hole adapted to the guide rod, the valve plate has a second connecting member, and the guide rod passes through the second connecting hole and is fixedly connected to the second connecting member. Alternatively, the guiding structure includes a guide groove, which is disposed inside the frame, and the shape of the guide groove is adapted to the side shape of the valve plate.

[0009] The inclusion of guide rods or guide grooves makes the valve plate and frame more stable during lifting and lowering, reducing swaying.

[0010] Furthermore, it also includes fasteners that, when the screen is being replaced, detachably fix the special tooling pad to the frame and the main body.

[0011] The fasteners enhance safety by preventing the lifted gate valve from accidentally falling during the installation and removal of the screen.

[0012] Furthermore, it also includes a support column for a special tooling pad, one end of which is fixedly connected to the frame. The main body has a slot that matches the support column, and the support column slides into the slot. When the screen is being replaced, the other end of the support column is detachably connected to the main body by fasteners.

[0013] By fixing the support column to the frame, the support column can rise and fall together with the frame. Workers only need to disassemble and assemble the fasteners, which saves more time and effort.

[0014] Furthermore, fasteners are screws with threaded holes, or pins with pin holes, or clamps.

[0015] Furthermore, the power source is a fluid pump, and the lifting device also includes a cylinder and a piston. The cylinder is fastened to the frame, and the other end of the drive rod is connected to the piston, which is located inside the cylinder.

[0016] Furthermore, the power source is an electric motor, and the lifting device also includes a transmission mechanism, through which the motor and the drive rod are connected.

[0017] Different types of horizontal extrusion presses can use different lifting devices depending on the actual situation.

[0018] Furthermore, the special tooling pad is either a two-piece structure, or a single-piece structure, or a single-piece structure that can be disassembled into multiple pieces, with the valve plate positioned in the middle of the special tooling pad.

[0019] Different specialized tooling pad structures can be used flexibly according to the actual situation.

[0020] The advantages and beneficial effects of this utility model are as follows:

[0021] 1. No lifting equipment is needed. The equipment can be self-lifted using its original power unit. The screen can be disassembled and replaced using a special tooling pad. The operation is convenient and saves labor.

[0022] 2. It adopts a detachable screen assembly. When replacing, only the screen needs to be replaced. The undamaged parts such as the screen frame can continue to be used, saving costs.

[0023] 3. In actual production, if the device of this utility model is used, there is no need to reserve space for lifting and hoisting equipment, and more production equipment can be used in the same space, thereby increasing output. Attached Figure Description

[0024] Figure 1 This is an overall structural diagram of the main components of this utility model;

[0025] Figure 2 This is a front view of the gate valve of this utility model before it is lifted.

[0026] Figure 3 This is a front view of the gate valve of this utility model after it has been raised.

[0027] Figure 4 This is a structural diagram of the detachable screen assembly of this utility model;

[0028] Figure 5 This is a structural diagram of the valve plate of this utility model;

[0029] Figure 6 This is a structural diagram of the framework of this utility model;

[0030] Figure 7 This is a structural diagram of the split-type special tooling pad of this utility model;

[0031] Figure 8 This is a structural diagram of the integral special tooling pad of this utility model;

[0032] Figure 9 This is a partial enlarged view of Embodiment 2 of this utility model.

[0033] In the diagram: 1. Main body; 11. Screen assembly; 111. Screen; 112. Screen frame; 12. First end face; 13. Second end face; 2. Special tooling pad; 21. Support column; 22. Fastener; 3. Gate valve; 31. Valve plate; 311. First connector; 312. Second connector; 32. Frame; 321. First connecting hole; 322. Second connecting hole; 33. Guide rod; 34. Guide groove; 4. Lifting device; 41. Drive rod. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0035] Example 1

[0036] like Figures 1-3 As shown, a device for replacing the screen of a horizontal extruder includes a special tooling plate 2, which is used to cooperate with the main body 1 of the horizontal extruder, a gate valve 3, and a lifting device 4. The gate valve 3 includes a valve plate 31 and a frame 32. The frame 32 is disposed on the upper side of the main body 1 of the horizontal extruder and is connected to the main body 1 by fasteners. The main body 1 has a valve plate slot that matches the shape of the valve plate 31. The valve plate 31 slides up and down within the valve plate slot. The fit between the valve plate slot and the valve plate 31 ensures that the valve plate 31 does not wobble during its sliding motion. During normal production, the lifting device 4 controls the raising and lowering of the valve plate 31 in the gate valve 3 for production or material discharge. When the screen needs to be replaced, remove the fasteners between the frame 32 and the main body 1. Use the lifting device 4 to lift the gate valve 3 as a whole. Then, place a special tooling pad 2 between the frame 32 and the main body 1 in the gate valve 3. Secure the special tooling pad 2 to the main body 1 and the frame 32 using fasteners 22. Afterward, perform the screen replacement operation. The fastener 22 can be a screw and threaded hole, a pin and pin hole, a clamp, or other fastening device.

[0037] A guide rod 33 is provided between the valve plate 31 and the frame 32, such as Figure 5 As shown, the valve plate 31 is provided with a first connecting member 311 and a second connecting member 312, such as Figure 6As shown, the frame 32 has a first connecting hole 321 adapted to the drive rod 41 and a second connecting hole 322 adapted to the guide rod 33. One end of the drive rod 41 passes through the first connecting hole 321 and is fixedly connected to the first connecting member 311; the guide rod 33 passes through the second connecting hole 322 and is fixedly connected to the second connecting member 312. The guide rod 33 prevents the frame 32 from shaking when it is raised or lowered, and combined with the valve plate slot inside the main body 1 that is adapted to the shape of the valve plate 31, it ensures that the entire gate valve 3 does not shake during the raising and lowering process.

[0038] The lifting device 4 is a hydraulic or pneumatic cylinder system. The lifting device 4 includes a drive rod 41, a fluid pump, a cylinder body, and a piston. The other end of the drive rod 41 is connected to the piston, which is located inside the cylinder body. The cylinder body is fastened to the frame 32.

[0039] like Figure 4 As shown, the main body 1 includes a screen assembly 11, which includes a screen 111 and a screen frame 112. The screen frame 112 is fitted over the screen 111. A retaining ring is provided on the side of the screen frame 112 away from the valve plate 31. After the screen 111 is installed, the retaining ring presses against the second end face 13 of the screen 111. During production, the valve plate 31 descends, and the valve plate 31 presses against the first end face 12 of the screen 111, thus ensuring that the screen 111 does not wobble back and forth during operation. The outer wall size of the screen 111 is adapted to the inner wall size of the screen frame 112, which ensures that the screen 111 is more stable during operation. The screen assembly 11 is designed as a detachable structure, which makes the replacement of the screen 111 more convenient and also saves costs.

[0040] Valve plate 31 is positioned in the middle of special tooling pad 2. For example... Figure 7 and Figure 8 As shown, the special tooling pad 2 can be a two-piece structure or a single piece. The single piece can be a single, indivisible structure or a structure that can be disassembled into multiple pieces. The structure of the special tooling pad 2 can be flexibly selected according to the actual situation.

[0041] When the screen needs to be replaced, first disconnect the power, remove the fasteners between the main body 1 and the frame 32, then start the fluid pump, press the piston and drive rod 41 downwards. The drive rod 41 drives the valve plate 31 to move downwards. After the valve plate 31 reaches the bottom, under the action of the reaction force, the cylinder drives the frame 32 to move upwards along the guide rod 33. After the frame 32 is lifted to the designated position, place the special tooling pad 2 between the main body 1 and the frame 32, and fix the special tooling pad 2 to the main body 1 and the special tooling pad 2 to the frame 32 with the fasteners 22. Start the fluid pump, pull the piston and drive rod 41 upwards, and the drive rod 41 drives the valve plate 31 to move upwards until the top of the valve plate 31 contacts the frame 32. Then, replace the screen.

[0042] After the screen replacement is completed, remove the fasteners 22 between the special tooling pad 2 and the main body 1, and between the special tooling pad 2 and the frame 32. Start the fluid pump, so that the drive rod 41 drives the valve plate 31 to move downward. After the valve plate 31 reaches the bottom, under the action of the reaction force, the cylinder drives the frame 32 to lift upward. Remove the special tooling pad 2, turn off the fluid pump, and under the action of the weight of the cylinder and the frame 32, the cylinder and the frame 32 fall back downward together. After the frame 32 contacts the top surface of the main body 1, it is fixed with fasteners, and the production task continues.

[0043] Example 2

[0044] like Figure 9 As shown, based on Embodiment 1, the special tooling pad 2 is a support column 21 structure. The main body 1 has a slot adapted to the support column 21. The support column 21 is slidably set in the slot and fixedly connected to the frame 32. The support column 21 and the frame 32 can be directly welded together or fixedly connected together by fasteners. The support column 21 rises and falls together with the frame 32. When the frame 32 drives the support column 21 to the designated position, the support column 21 is fastened to the main body 1 by fasteners 22, and then the screen 111 is replaced.

[0045] The advantage of this solution is that workers only need to install the fasteners 22 after the support column 21 reaches the designated position, making the operation more convenient. Positioning lines can also be set on the support column 21 to make the installation and positioning of the fasteners 22 more precise.

[0046] Example 3

[0047] like Figure 6 As shown, based on the above embodiment, the guide rod 33 can be replaced by a guide groove 34. The guide groove 34 is located inside the frame 32, and its shape matches the side shape of the valve plate 31. This also makes the movement of the overall gate valve 3 more stable.

[0048] Example 4

[0049] Based on the above embodiments, if the lifting device 4 is replaced with a motor system, the lifting device 4 includes a drive rod 41, a motor and a transmission mechanism, and the motor and the drive rod 41 are connected through the transmission mechanism.

[0050] The motor and transmission mechanism directly drive the drive rod 41 to rise and fall, which in turn drives the valve plate 31 to rise and fall, and the valve plate 31 drives the frame 32 to rise and fall. For small horizontal extruders, the motor system offers more convenient maintenance, faster response, and higher efficiency.

[0051] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for replacing the screen of a horizontal extruder, characterized in that: Includes a special tooling pad (2), which is used to cooperate with the main body (1) of the horizontal extruder, the gate valve (3) and the lifting device (4); The special tooling pad (2) is detachably installed between the main body (1) and the gate valve (3) when the screen is being replaced; The gate valve (3) includes a valve plate (31) and a frame (32); the frame (32) is disposed on the upper side of the main body (1), and fasteners are provided between the frame (32) and the main body (1); the main body (1) is provided with a valve plate slot that matches the shape of the valve plate (31), the valve plate (31) is disposed in the valve plate slot, and a guide structure is provided between the valve plate (31) and the frame (32); The lifting device (4) includes a drive rod (41) and a power source; the frame (32) is provided with a first connection hole (321) that is adapted to the drive rod (41), the valve plate (31) is provided with a first connector (311), and one end of the drive rod (41) passes through the first connection hole (321) and is fixedly connected to the first connector (311).

2. The device for replacing the screen of a horizontal extruder according to claim 1, characterized in that: The main body (1) includes a screen assembly (11), which includes a screen (111) and a screen frame (112). The screen frame (112) is fitted outside the screen (111), and the outer wall size of the screen (111) is adapted to the inner wall size of the screen frame (112). The screen (111) includes a first end face (12) and a second end face (13). The valve plate (31) is pressed against the first end face (12). The screen frame (112) is provided with a retaining ring, which is pressed against the second end face (13).

3. The device for replacing the screen of a horizontal extruder according to claim 1, characterized in that: The guide structure includes a guide rod (33), a frame (32) is provided with a second connecting hole (322) adapted to the guide rod (33), a valve plate (31) is provided with a second connector (312), and the guide rod (33) passes through the second connecting hole (322) and is fixedly connected to the second connector (312).

4. The device for replacing the screen of a horizontal extruder according to claim 1, characterized in that: The guiding structure includes a guide groove (34), which is located inside the frame (32). The shape of the guide groove (34) is adapted to the side shape of the valve plate (31).

5. The device for replacing the screen of a horizontal extruder according to claim 1, characterized in that: It also includes fasteners (22), which detachably connect the special tooling pad (2) and the frame (32) when the screen is being replaced, and detachably connect the special tooling pad (2) and the main body (1).

6. The device for replacing the screen of a horizontal extruder according to claim 1, characterized in that: It also includes a support column (21) of a special tooling pad (2), one end of which is fixedly connected to the frame (32). The main body (1) has a slot that is compatible with the support column (21). The support column (21) slides with the slot. When the screen is being replaced, the other end of the support column (21) is detachably connected to the main body (1) by a fastener (22).

7. The device for replacing the screen of a horizontal extruder according to claim 5 or 6, characterized in that: Fasteners (22) are screws and threaded holes, or pins and pin holes, or clamps.

8. The device for replacing the screen of a horizontal extruder according to claim 1, characterized in that: The power source is a fluid pump. The lifting device (4) also includes a cylinder and a piston. The cylinder is fastened to the frame (32). The other end of the drive rod (41) is connected to the piston, which is located inside the cylinder.

9. The device for replacing the screen of a horizontal extruder according to claim 1, characterized in that: The power source is an electric motor, and the lifting device (4) also includes a transmission mechanism. The electric motor and the drive rod (41) are connected through the transmission mechanism.

10. The device for replacing the screen of a horizontal extruder according to claim 5, characterized in that: The special tooling pad (2) is a two-piece split structure, or a single integral structure, or an integral structure that can be disassembled into multiple pieces. The valve plate (31) is set in the middle of the special tooling pad (2).

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