A device for cleaning precipitates from pipe production

Abstract

The present invention discloses a device for cleaning precipitates produced in pipe production, comprising a cutter disc mechanism and a cutter disc driving mechanism. The cutter disc mechanism comprises an annular cutter disc body, which is sleeved on the outer side of the extruded pipe, and the cutter disc driving mechanism is installed on a sizing sleeve. The cutter disc driving mechanism is transmission-connected to the annular cutter disc body, and the cutter disc driving mechanism can push the annular cutter disc body to move toward the die seat of the extruder to cut off precipitates. The present invention further installs an annular cutter disc between the die seat and the sizing sleeve. Under the pushing action, the annular cutter disc can move to the extrusion outlet position of the die seat, and can effectively cut off the precipitate layer. The annular cutter disc of the present invention has a melting function, and can recycle the precipitate after melting. Therefore, the annular cutter disc can be used for a long time. After the annular cutter disc is used to regularly clean the precipitate layer, the extruder can work continuously without having to stop to process the precipitate, which can greatly improve production efficiency, effectively reduce the scrap rate, and reduce the pipe production cost.

Description

Technical Field

[0001] The invention relates to the technical field of PE pipe production equipment, and in particular to a device for cleaning precipitates produced during pipe production. Background Art

[0002] PE pipe generally refers to polyethylene pipe, which is widely used in municipal, water conservancy, gas and other fields. The color of PE pipe is mainly white and black, which is determined by the different masterbatch components added to the material. PE pipe is generally produced by extrusion molding, as shown in the attached figure of the manual. Figure 1 and Figure 2 As shown, in the production of PE pipes, there will be a section of exposed pipe between the extruder die seat and the sizing sleeve (the pipe is extruded from the die seat and moves to the sizing sleeve). This exposed section is to form a stretching effect on the pipe and can naturally cool the newly extruded pipe so that the surface of the pipe can be initially hardened, which is convenient for the subsequent shaping process. Since there are inevitably some impurities in the production materials of PE pipes, when the PE pipe is extruded from the extruder die seat, the impurities will form a precipitation effect. The precipitation of impurities will form a circle of precipitate layer at the exit position of the extruder die seat. As the extrusion production proceeds, the precipitate layer will be accumulated thicker and thicker, and the area will gradually increase. At this time, the precipitate layer will form a hardening effect under natural cooling. After hardening, the precipitate layer will scratch the extruded pipe, causing quality problems on the surface of the pipe. Some hardened precipitates will even fall off naturally and adhere to the pipe wall, causing the pipe to be scrapped. The instruction manual is attached. Figure 1 It is the precipitation situation of the die seat position after the extruder has been in continuous production for 1-2 hours. Figure 2 It is the precipitation situation at the die seat position after the extruder has been in continuous production for 4-6 hours. After the extruder has been in continuous production for 4-6 hours, the precipitation layer has become larger. At present, the shutdown cleaning mode is adopted. After the extruder is shut down, the precipitation layer is manually cleaned. In this mode, the production continuity of the extruder is destroyed, the production efficiency is not high, and each time the extruder is started, a certain amount of waste will be generated. Frequent shutdown and startup will cause an increase in waste and a high material waste rate. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a device for cleaning precipitates produced during pipe production.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A device for cleaning precipitates in pipe production is installed between the die base and the sizing sleeve of an extruder and is used for cleaning precipitates at the outlet end of the die base of the extruder. The device comprises a cutter disc mechanism and a cutter disc drive mechanism. The cutter disc mechanism comprises an annular cutter disc body, which is sleeved on the outside of the extruded pipe. The cutter disc drive mechanism is installed on the sizing sleeve and is in transmission connection with the annular cutter disc body. The cutter disc drive mechanism can push the annular cutter disc body toward the die base of the extruder to remove precipitates.

[0006] The annular cutter disc body is a hollow structure, and the side end face of the annular cutter disc body facing the extruder die seat is set to be open. A circle of blades is connected to the inner wall edge of the open end of the annular cutter disc body, and a circle of sealing seats is connected to the outer wall edge of the open end of the annular cutter disc body, and a sealing ring is installed on the sealing seat.

[0007] The cutter disc driving mechanism comprises a plurality of cutter disc pushing components, and the plurality of cutter disc pushing components are evenly connected to the sizing sleeve.

[0008] The cutter disc pushing assembly includes a push cylinder mounting frame and a push cylinder, the push cylinder mounting frame is obliquely connected to the sizing sleeve, the push cylinder is installed on the push cylinder mounting frame, and the cutter disc driving mechanism also includes a flexible connecting seat and a linkage rod, the flexible connecting seat is connected to the end of the push cylinder piston rod, one end of the linkage rod is connected to the flexible connecting seat, and the other end is connected to the outer wall of the annular cutter disc body.

[0009] The flexible connecting seat includes a seat body, a buffer spring and a guide piston. A spring hole is provided in the seat body, and the buffer spring and the guide piston are installed in the spring hole. A piston tail shaft is connected to the guide piston, and the piston tail shaft is also connected to the end of the push cylinder piston rod.

[0010] A precipitate hot melt recovery component is installed on the annular cutter disc body, and the precipitate hot melt recovery component includes a heating plate, a heat-conducting column and a waste liquid recovery pipe. Several of the heating plates are evenly installed on the outer wall of the annular cutter disc body, and several of the heat-conducting columns are fixedly connected to the annular cutter disc body. The heating plates and the heat-conducting columns are arranged in a one-to-one correspondence. The heat-conducting columns are installed close to the blade, and the waste liquid recovery pipe is connected to the bottom low point of the annular cutter disc body.

[0011] The beneficial effects of the present invention are as follows: an annular cutter disc is installed between the die base and the sizing sleeve, and the annular cutter disc is arranged on the outside of the tube wall of the extruded pipe. Under the pushing action, the annular cutter disc can move to the extrusion port position of the die base, and can effectively cut off the precipitate layer. The annular cutter disc of the present invention has a melting function, and can melt the precipitate and then recycle it, so the annular cutter disc can be used for a long time. After using the annular cutter disc to regularly clean the precipitate layer, the extruder can work continuously without having to stop to deal with the precipitate, which can greatly improve production efficiency, effectively reduce the scrap rate, and reduce the production cost of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is the precipitation situation when the extruder runs for 1-2 hours;

[0013] Figure 2 This is the precipitation situation when the extruder runs for 4-6 hours;

[0014] Figure 3 This is the installation front view of the present invention;

[0015] Figure 4 Schematic diagram of the internal structure and transmission structure of the cutter head mechanism of the present invention;

[0016] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0017] Figure 6 It is a structural schematic diagram of the flexible connecting seat of the present invention.

[0018] In the figure: extruder die base 100, sizing sleeve 200, cutter disc mechanism 1, annular cutter disc body 11, blade 12, sealing seat 13, sealing ring 14, cutter disc drive mechanism 2, cutter disc pushing assembly 21, push cylinder mounting frame 211, push cylinder 212, flexible connecting seat 22, seat body 221, spring hole 222, buffer spring 223, guide piston 224, piston tail shaft 225, linkage rod 23, precipitate hot melt recovery assembly 3, heating plate 31, heat conducting column 32, waste liquid recovery pipe 33. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The descriptions of "left" and "right" in the present invention are all based on Figure 1 For reference direction:

[0020] like Figures 3 to 6As shown, a device for cleaning precipitates from pipe production is installed between the extruder die base 100 and the sizing sleeve 200, and is used for cleaning precipitates at the outlet end of the extruder die base 100. The device comprises a cutter disc mechanism 1 and a cutter disc drive mechanism 2. The cutter disc mechanism 1 comprises an annular cutter disc body 11, which is sleeved on the outside of the extruded pipe. The cutter disc drive mechanism 2 is installed on the sizing sleeve 200, and the cutter disc drive mechanism 2 is connected to the annular cutter disc body 11 in a transmission manner. The cutter disc drive mechanism 2 can push the annular cutter disc body 11 toward the extruder die base 100. 00 direction movement to cut off the precipitates. The present invention is started once every 1 hour to quickly cut and clean up the precipitates at the outlet end of the extruder die base 100. After installing the present invention, there is no need to stop the machine for cleaning. With regular cleaning, there is no longer a large amount of precipitates accumulating to form a precipitate layer, and the extruder can work normally and continuously. Since the extruder can work continuously, its production efficiency is greatly improved, and the waste generated by stopping and restarting will be avoided, which helps to reduce the total waste rate of production and helps to reduce the production cost of pipes.

[0021] like Figure 5 As shown, the annular cutter disc body 11 is a hollow structure to accommodate the precipitate removed. The side end face of the annular cutter disc body 11 facing the extruder die base 100 is set to be open. A circle of blades 12 are connected to the inner wall edge of the open end of the annular cutter disc body 11. The blades 12 are used to remove precipitates. A circle of sealing seats 13 are connected to the outer wall edge of the open end of the annular cutter disc body 11. The sealing seat 13 is equipped with a sealing ring 14, which can prevent the removed precipitate from falling out of the annular cutter disc body 11, especially preventing the precipitate liquid from flowing out after melting. During the cutting operation, the blade 12 is in contact with the side wall of the extruder die base 100, and the sealing ring 14 is also in contact with the side wall of the extruder die base 100, ensuring that the cut precipitate can fall back into the annular cutter disc body 11 and be held. A gap should be left between the inner wall of the annular cutter disc body 11 and the outer wall of the extruded pipe so as not to affect the stretching and conveying of the pipe.

[0022] like Figure 3 As shown, the cutter disc driving mechanism 2 includes a plurality of cutter disc pushing components 21, and the plurality of cutter disc pushing components 21 are evenly connected to the sizing sleeve 200 to form a uniform pushing effect.

[0023] like Figure 3 and Figure 4As shown, the cutter disc pushing assembly 21 includes a push cylinder mounting frame 211 and a push cylinder 212. The push cylinder mounting frame 211 is connected obliquely to the sizing sleeve 200, and the push cylinder 212 is installed on the push cylinder mounting frame 211. Since the push cylinder mounting frame 211 is connected obliquely, an inclined pushing direction can be formed to match the tensile shape of the exposed section of the pipe between the extruder die base 100 and the sizing sleeve 200, so that the annular cutter disc body 11 can move along the outer wall of the pipe without touching the outer wall of the pipe. The cutter disc driving mechanism 2 It also includes a flexible connecting seat 22 and a linkage rod 23. The flexible connecting seat 22 is connected to the piston rod end of the push cylinder 212. One end of the linkage rod 23 is connected to the flexible connecting seat 22, and the other end is connected to the outer wall of the annular cutter disc body 11. When the push cylinder 212 is extended or retracted, the linkage rod 23 can drive the movement of the annular cutter disc body 11 to perform the precipitate removal operation. The flexible connecting seat 22 plays a role of flexible pressure to prevent the blade 12 from quickly colliding with the side wall of the extruder die base 100 and causing blade chipping.

[0024] like Figure 6 As shown, the flexible connecting seat 22 includes a seat body 221, a buffer spring 223 and a guide piston 224. A spring hole 222 is provided in the seat body 221, and the buffer spring 223 and the guide piston 224 are installed in the spring hole 222. The guide piston 224 is connected to a piston tail shaft 225, and the piston tail shaft 225 is also connected to the piston rod end of the push cylinder 212. The guide piston 224 plays a pushing and guiding role. When the blade 12 touches the side wall of the extruder die base 100, the buffer spring 223 will be compressed, so that the blade 12 is in a gradually pressurized process, which can not only meet the needs of cutting off precipitates, but also reduce the contact impact between the blade 12 and the side wall of the extruder die base 100, thereby protecting the blade 12.

[0025] like Figure 5As shown, a precipitate hot melt recovery component 3 is installed on the annular cutter head 11, and the precipitate hot melt recovery component 3 includes a heating plate 31, a heat-conducting column 32 and a waste liquid recovery pipe 33. Several heating plates 31 are evenly installed on the outer wall of the annular cutter head 11, and several heat-conducting columns 32 are fixedly connected to the annular cutter head 11. The heating plates 31 and the heat-conducting columns 32 are arranged in a one-to-one correspondence. The heat-conducting columns 32 are installed close to the blade 12, and the waste liquid recovery pipe 33 is connected to the bottom low point of the annular cutter head 11. The precipitates removed by the annular cutter head 11 will accumulate on the blade 12. If they are not handled, the accumulation at the blade 12 position will increase, and there is a risk of them falling onto the extruded pipe. Therefore, the present invention designs a precipitate hot melt recovery component 31. The melting recovery component 3 is used to solve the above problem, so that the precipitate can be discharged quickly. After the blade 12 cuts off the precipitate, the heating plate 31 takes effect and can form a heating effect on the annular cutter disc body 11, especially through the heat conduction column 32 to the blade 12, so that a hot melting effect can be formed on the precipitate, turning it into a liquid. Due to the existence of the slope inside the annular cutter disc body 11, the liquid precipitate will flow back to the low point position in the annular cutter disc body 11, and then be promptly pumped out through the waste liquid recovery pipe 33. The above design can solve the problem of precipitate accumulation on the blade 12, so that the annular cutter disc body 11 can work continuously without frequent cleaning (just clean it at the end of each shift), which can greatly reduce the maintenance burden to maintain production continuity.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for cleaning precipitates in pipe production, installed between an extruder die base (100) and a sizing sleeve (200), for cleaning precipitates at the outlet end of the extruder die base (100), characterized by: The invention comprises a cutter disc mechanism (1) and a cutter disc drive mechanism (2), wherein the cutter disc mechanism (1) comprises an annular cutter disc body (11), the annular cutter disc body (11) is sleeved on the outside of the extruded pipe, the cutter disc drive mechanism (2) is installed on the sizing sleeve (200), the cutter disc drive mechanism (2) is in transmission connection with the annular cutter disc body (11), the cutter disc drive mechanism (2) can push the annular cutter disc body (11) to move toward the extruder die seat (100) to cut off precipitates, the annular cutter disc body (11) is a hollow structure, the side end face of the annular cutter disc body (11) facing the extruder die seat (100) is set to be open, the inner wall edge of the open end of the annular cutter disc body (11) is connected with a circle of blades (12), and the annular cutter disc A sealing seat (13) is connected to the outer wall edge of the open end of the body (11), and a sealing ring (14) is installed on the sealing seat (13). A precipitate hot melt recovery component (3) is installed on the annular cutter disc body (11), and the precipitate hot melt recovery component (3) includes a heating plate (31), a heat-conducting column (32) and a waste liquid recovery pipe (33). Several of the heating plates (31) are evenly installed on the outer wall of the annular cutter disc body (11), and several of the heat-conducting columns (32) are fixedly connected to the annular cutter disc body (11). The heating plates (31) and the heat-conducting columns (32) are arranged in a one-to-one correspondence. The heat-conducting columns (32) are installed close to the blade (12), and the waste liquid recovery pipe (33) is connected to the bottom lowest point of the annular cutter disc body (11).

2. The device for cleaning precipitates from pipe production according to claim 1, characterized in that: The cutter disc driving mechanism (2) comprises a plurality of cutter disc pushing assemblies (21), and the plurality of cutter disc pushing assemblies (21) are evenly connected to the sizing sleeve (200).

3. The device for cleaning precipitates from pipe production according to claim 2, characterized in that: The cutter disc pushing assembly (21) includes a push cylinder mounting frame (211) and a push cylinder (212), wherein the push cylinder mounting frame (211) is obliquely connected to the sizing sleeve (200), and the push cylinder (212) is mounted on the push cylinder mounting frame (211). The cutter disc driving mechanism (2) also includes a flexible connecting seat (22) and a linkage rod (23), wherein the flexible connecting seat (22) is connected to the piston rod end of the push cylinder (212), and one end of the linkage rod (23) is connected to the flexible connecting seat (22), and the other end is connected to the outer wall of the annular cutter disc body (11).

4. The device for cleaning precipitates from pipe production according to claim 3, characterized in that: The flexible connection seat (22) includes a seat body (221), a buffer spring (223) and a guide piston (224). A spring hole (222) is provided in the seat body (221). The buffer spring (223) and the guide piston (224) are installed in the spring hole (222). A piston tail shaft (225) is connected to the guide piston (224). The piston tail shaft (225) is also connected to the piston rod end of the push cylinder (212).

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