Candle type backflush screen changer

Abstract

The application discloses a candle type backwashing screen changer and relates to the technical field of screen changers. The candle type backwashing screen changer comprises a shell assembly, filter assemblies, material guide pipes and flushing pipes. The filter assemblies are arranged in two groups and are arranged inside the shell assembly. The shell assembly is arranged inside the shell assembly. The two groups of filter assemblies can slide horizontally. Two groups of material guide pipes and flushing pipes are arranged on both sides of the shell assembly. The material guide pipes can be used for conveying materials to complete the filtration of the materials. The flushing pipes can convey cleaning agents into the filter assemblies to realize the flushing of the filter assemblies. Therefore, the filter assemblies can effectively solve the blockage problem during use. The conveying pipelines of the materials and the cleaning agents are realized through the translation of the filter assemblies. Therefore, the switching of the device in different working modes is facilitated, and the operation and use of the device are facilitated while the working stability of the device is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of screen changer, in particular to a candle type backflushing screen changer. BACKGROUND

[0002] A screen changer is a manual or automatic switching device comprising one or more filter screens for filtering out foreign particles and impurities when a plastic material flows through the filter screen. The filter screen is supported by an alloy perforated plate which is mounted on a plate or column carrier which can be moved to switch between an operating position in a system and an offline non-operating position. The screen changer can be installed on any new or existing extruder, melt pump, reactor or other extrusion line. It can be used to filter any type of polymer, rubber or ceramic melt. The existing screen changer of the extruder is mainly divided into two types, one is a manual screen changer: the other is a hydraulic pull type screen changer. The operation mode of the manual screen changer is to stop the extruder first, then take out the filter screen in the screen changer for replacement: and the hydraulic pull type screen changer changes the filter screen by pushing and pulling left and right, which causes the extrusion material on the extruder to be interrupted during the replacement of the filter screen, causing the continuous production to be interrupted, that is, directly affecting the normal production of the extruder, and also causing a certain amount of waste.

[0003] A column type screen changer with publication number CN219114751U includes a double column double station and an oil cylinder mechanism, one side of the double column double station is provided with a double column sealing mechanism, and one side of the double column sealing mechanism is installed with an integrated sealing frame, the oil cylinder mechanism is arranged on one side of the integrated sealing frame, the inside of the oil cylinder mechanism is installed with an internal hydraulic rod, and the lower part of the internal hydraulic rod is installed with an internal column oil cylinder, one side of the internal column oil cylinder is penetrated with an anti-leakage frame, one side of the anti-leakage frame is installed with an internal double screen double channel mechanism, and one side of the internal double screen double channel mechanism is provided with a screen changing pipe. The column type screen changer effectively penetrates and fits the anti-leakage frame of the hollow structure inside one side of the internal hydraulic rod and the internal column oil cylinder, so that the internal double screen double channel mechanism component is sealed inside the anti-leakage frame, which is convenient for screen changing, dismounting and replacing.

[0004] The above technical scheme ensures the continuous operation of the equipment during the ring screen process by adopting the double channel structure, but the technical scheme is difficult to solve the problems of filter screen blockage and pipeline switching during filter screen replacement in actual application, and the actual application effect is limited.

[0005] Therefore, it is necessary to invent a candle type backflushing screen changer to solve the above problems. SUMMARY

[0006] The purpose of the present application is to provide a candle type backflushing screen changer to solve the problems raised in the background art.

[0007] To achieve the above object, the present application provides the following technical scheme: candle backwash screen changer, including shell assembly, filter assembly, guide pipe and flushing pipe, the filter assembly is provided with two groups, and two groups of filter assembly are arranged in the inside of shell assembly, the guide pipe and flushing pipe are provided with two groups, and two groups of guide pipe and flushing pipe are respectively arranged in the middle of both sides of shell assembly;

[0008] The shell assembly includes a shell, and two hydraulic cylinders are arranged on one side of the shell.

[0009] The filter assembly includes a plunger and a cylinder, the cylinder is arranged at one end of the plunger, and the cylinder and the plunger are both arranged as hollow structures and arranged in the inside of the shell.

[0010] The guide pipe is arranged as a three-way pipe, and both ends of the guide pipe on the inside are arranged through the inner wall of the shell.

[0011] Preferably, two sliding grooves are formed in the inner walls of both sides of the shell, and one end of the guide pipe and the flushing pipe on the inside extends to the inner wall of the sliding groove.

[0012] One end of the guide pipe is fixedly provided with a sliding block, the outer side wall of the sliding block is fixedly provided with a sealing plate, one end of the guide pipe extends to the outer side wall of the sealing plate, and the sealing plate is arranged in the inside of the sliding groove.

[0013] Preferably, one end of one of the guide pipes is fixedly provided with a feed pipe, one end of the feed pipe extends to the inside of the plunger, one end of the other guide pipe is fixedly provided with a discharge pipe, one end of the discharge pipe is fixedly provided with a fixing cover, and the fixing cover is arranged in the inside of the plunger.

[0014] Preferably, the inside of the fixing cover is provided with a guide seat, a plurality of extension covers are arranged through the middle of the guide seat, the extension covers are arranged as horn-shaped structures, a plurality of filter screens are arranged on one side of the extension covers, one end of the filter screen is provided with a positioning seat, the positioning seat is arranged in the inside of the cylinder, and a plurality of positioning covers corresponding to the filter screens are fixedly arranged on one side of the positioning seat.

[0015] Preferably, one end of the cylinder is provided with an end cover, an adjusting bolt is arranged in the threaded hole formed in the middle of the end cover, and one end of the adjusting bolt is movably arranged on the outer side wall of the positioning seat through a bearing.

[0016] Preferably, a slag discharge groove is arranged through the bottom end of the outer side wall of the end cover, a backwashing sewage valve is fixedly arranged at the notch of the slag discharge groove, and the backwashing sewage valve is arranged on the outside of the end cover.

[0017] Preferably, the plunger and the barrel are fixedly provided with clamping blocks at the end close to each other, the clamping blocks are arranged in annular structure, the cross section of the clamping block is arranged in right trapezoidal structure, and the outer side of the clamping block is provided with a clamp.

[0018] Preferably, the cross section of the filter screen is arranged in annular wave shape structure.

[0019] Preferably, the sealing plate is arranged in rubber material, and the outer side wall of the sealing plate is attached to the groove bottom of the sliding groove.

[0020] Preferably, the hydraulic cylinder is fixedly provided with a mounting seat at one end, a plurality of supporting bolts are fixedly arranged between the mounting seat and the shell, one end of the plunger is fixedly provided with a connecting seat, and the connecting seat is fixedly arranged on the output end of the hydraulic cylinder.

[0021] The technical effects and advantages of the present application are as follows:

[0022] 1、The present application sets up the shell assembly, the inside of the shell assembly is provided with two groups of filter assemblies, and the two groups of filter assemblies can slide horizontally, two groups of material guiding pipes and flushing pipes are arranged on the two sides of the shell assembly respectively, the material guiding pipes can be used for conveying materials to complete the filtration of the materials, and the flushing pipes can convey cleaning agents to the inside of the filter assemblies to realize the flushing of the filter assemblies, so that the blockage of the filter assemblies during use can be effectively solved, and the conveying pipelines of the materials and the cleaning agents are realized by the translation of the filter assemblies, so that the switching of the device in different working modes is facilitated, and the operation and use of the device are facilitated while the working stability of the device is ensured.

[0023] 2、The present application sets up the filter assembly, the filter assembly comprises a plunger and a barrel, the inside of the plunger and the barrel is provided with a filter screen, and the cross section of the filter screen is arranged in annular wave shape structure, the arrangement of the annular wave shape structure improves the surface area of the filter screen, so that the filtering effect of the filter screen is improved, the material guiding seat and the positioning seat are arranged in the inside of the plunger and the barrel respectively, the material guiding seat and the positioning seat cooperate to realize the clamping and fixing of the filter screen, when the filter screen needs to be replaced, the barrel and the plunger are separated, and the filter screen can be replaced, so that the replacement efficiency of the filter screen is improved, and the working efficiency of the equipment is ensured.

[0024] 3、The application can realize the switching of the pipeline connected with the filtering assembly and the switching of the working state of the device by setting the sliding slot in the inner wall of the shell, setting the guide pipe at one end of the plunger, setting the sliding block at one end of the guide pipe, and setting the sealing plate outside the sliding block, and the one end of the guide pipe can coincide or be staggered with the guide pipe and the flushing pipe when the sliding block slides in the sliding slot, thereby the sealing effect of the pipeline can be effectively improved to ensure the stability of the device during working. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the overall structure schematic diagram of the application.

[0026] Figure 2 It is the overall structure cross-sectional view schematic diagram of the application.

[0027] Figure 3 It is the shell assembly structure schematic diagram of the application.

[0028] Figure 4 It is the shell body structure cross-sectional view schematic diagram of the application.

[0029] Figure 5 It is the filtering assembly structure schematic diagram of the application.

[0030] Figure 6 It is the filtering assembly structure explosion diagram of the application.

[0031] Figure 7 It is the plunger structure cross-sectional view schematic diagram of the application.

[0032] Figure 8 It is the barrel structure schematic diagram of the application.

[0033] Figure 9 It is the filtering assembly flushing state schematic diagram of the application.

[0034] Figure 10 It is the filtering assembly ring network state schematic diagram of the application.

[0035] In the figure: 1, shell assembly; 2, filtering assembly; 3, guide pipe; 4, flushing pipe; 101, shell; 102, hydraulic cylinder; 103, mounting seat; 104, support bolt; 105, sliding slot; 201, plunger; 202, barrel; 203, connecting seat; 204, guide pipe; 205, sliding block; 206, sealing plate; 207, feed pipe; 208, discharge pipe; 209, fixed cover; 210, guide seat; 211, extension cover; 212, filter screen; 213, positioning seat; 214, positioning cover; 215, end cover; 216, adjusting bolt; 217, deslagging groove; 218, backwashing sewage valve; 219, clamping block; 220, clamp. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] This invention provides, for example Figures 1 to 10 The candle-type backwash screen changer shown includes a housing assembly 1, a filter assembly 2, a feed pipe 3, and a flushing pipe 4. The filter assembly 2 is provided in two sets, and both sets of filter assemblies 2 are located inside the housing assembly 1. The feed pipe 3 and the flushing pipe 4 are each provided in two sets, and the two sets of feed pipe 3 and flushing pipe 4 are respectively installed through the middle of both sides of the housing assembly 1.

[0038] The housing assembly 1 includes a housing 101, and two hydraulic cylinders 102 are provided on one side of the housing 101;

[0039] Specifically, two grooves 105 are provided on both sides of the inner wall of the housing 101, and the inner ends of the guide pipe 3 and the flushing pipe 4 extend to the inner wall of the groove 105.

[0040] More specifically, a mounting base 103 is fixedly provided at one end of the hydraulic cylinder 102, and a plurality of support bolts 104 are fixedly provided between the mounting base 103 and the housing 101. A connecting seat 203 is fixedly provided at one end of the plunger 201, and the connecting seat 203 is fixedly provided at the output end of the hydraulic cylinder 102. The hydraulic cylinder 102 can drive the connecting seat 203 to slide horizontally, so as to adjust the position of the filter component 2, and thus adjust the working state of the device.

[0041] The filter assembly 2 includes a plunger 201 and a cylinder 202. The cylinder 202 is disposed at one end of the plunger 201. Both the cylinder 202 and the plunger 201 are hollow structures and are disposed inside the housing 101.

[0042] Specifically, two guide tubes 204 are fixedly provided at one end of the plunger 201, a slider 205 is fixedly provided at one end of the guide tube 204, a sealing plate 206 is fixedly provided on the outer wall of the slider 205, and one end of the guide tube 204 extends to the outer wall of the sealing plate 206. The sealing plate 206 is located inside the slide groove 105.

[0043] More specifically, the sealing plate 206 is made of rubber material, and the outer side wall of the sealing plate 206 is attached to the groove bottom of the sliding groove 105. The rubber material has good ductility, so as to ensure the sealing effect between the sliding block 205 and the sliding groove 105, thereby ensuring the sealing performance of the device during pipeline switching;

[0044] Furthermore, one end of one conduit 204 is fixedly provided with a feeding pipe 207, and one end of the feeding pipe 207 extends into the inside of the plunger 201. One end of the other conduit 204 is fixedly provided with a discharging pipe 208, and one end of the discharging pipe 208 is fixedly provided with a fixing cover 209, and the fixing cover 209 is arranged in the inside of the plunger 201.

[0045] Furthermore, the inside of the fixing cover 209 is provided with a material guiding seat 210, a plurality of extension covers 211 are arranged in the middle of the material guiding seat 210, and the extension covers 211 are arranged in a horn shape. The horn-shaped structure facilitates the exchange of raw materials between the filter screen 212 and the conduit 204. One side of the extension cover 211 is provided with a plurality of filter screens 212, one end of the filter screen 212 is provided with a positioning seat 213, the positioning seat 213 is arranged in the inside of the cylinder body 202, and a plurality of positioning covers 214 corresponding to the filter screen 212 are fixedly arranged on one side of the positioning seat 213. The positioning cover 214 can realize accurate positioning of the filter screen 212, so as to ensure the installation effect of the filter screen 212.

[0046] Furthermore, the cross section of the filter screen 212 is arranged in a ring-shaped wave shape. The surface of the filter screen 212 is full of wrinkles, so that the contact area between the filter screen 212 and the raw materials is improved, and the filtering effect of the device is improved.

[0047] Furthermore, one end of the cylinder body 202 is provided with an end cover 215, a threaded hole is arranged in the middle of the end cover 215, and an adjusting bolt 216 is arranged in the threaded hole. One end of the adjusting bolt 216 is movably arranged on the outer side wall of the positioning seat 213 through a bearing. The end cover 215 is installed on one end of the cylinder body 202 through a bolt. The end cover 215 can be removed by removing the bolt. When the adjusting bolt 216 rotates, the positioning seat 213 can be driven to move, so as to adjust the position of the positioning seat 213, thereby realizing the compression of the filter screen 212.

[0048] Furthermore, a residue discharging groove 217 is arranged in the bottom end of the outer side wall of the end cover 215, and a backwashing sewage valve 218 is fixedly arranged in the groove opening of the residue discharging groove 217. The backwashing sewage valve 218 is arranged outside the end cover 215. The cleaning agent can enter the inside of the filter screen 212 through the flushing pipe 4, the conduit 204 and the discharging pipe 208 in sequence, so as to flush the clogged waste residue on the filter screen 212. The flushed waste residue and the cleaning agent can be discharged through the residue discharging groove 217 and the backwashing sewage valve 218 on the end cover 215.

[0049] Moreover, the plunger 201 and the barrel 202 are fixedly provided with clamping blocks 219 at the end close to each other, the clamping blocks 219 are provided in an annular structure, and the cross section of the clamping blocks 219 is provided in a right-angled trapezoidal structure, the outer side of the right-angled trapezoidal structure is provided in an inclined structure, the inclined surface of the outer side of the clamping blocks 219 is extruded in the locking process, so that the two clamping blocks 219 are close to each other, thereby the position between the barrel 202 and the plunger 201 can be fixed, the outer side of the clamping blocks 219 is provided with clamps 220, the clamps 220 can realize the fastening function through the bolts, so as to realize the locking of the position between the two clamping blocks 219, thereby the position between the plunger 201 and the barrel 202 can be locked;

[0050] The material guide pipe 3 is provided as a three-way pipe, and the two ends of the material guide pipe 3 located on the inner side are both provided to penetrate the inner wall of the shell 101, the material guide pipe 3 can divide the raw material entering the device into two parts, and the two parts of raw material enter the inside of the two groups of filter assemblies 2 respectively.

[0051] In summary, when the device is used, the discharge pipeline of the equipment can be connected with the end of the material guide pipe 3 located on the outside of the device through the flange, the cleaning agent pipeline for cleaning the equipment can be connected with one end of the flushing pipe 4, during the use of the device, the raw material in the discharge pipeline of the equipment can enter the inside of the filter assembly 2 through the material guide pipe 3, and the filtered raw material can be discharged through the other material guide pipe 3, thereby the filtration of the raw material can be realized;

[0052] After the device is used for a period of time, the filter screen 212 in the filter assembly 2 is blocked due to continuous filtration, at this time, the hydraulic cylinder 102 in the shell assembly 1 can drive the filter assembly 2 to move horizontally, so that the filter assembly 2 slides horizontally in the shell assembly 1, at this time, the inlet of one filter assembly 2 is separated from the material guide pipe 3 and is coincided with the flushing pipe 4, at this time, the cleaning agent can be transported to the inside of the filter assembly 2 through the flushing pipe 4 to flush the filter screen in the filter assembly 2, the flushed cleaning agent and waste residue can be discharged through one end of the filter assembly 2, after the cleaning is completed, the filter assembly 2 is reset by horizontal movement, thereby the cleaning of the filter assembly 2 can be realized, the two groups of filter assemblies 2 can be cleaned in an intermittent manner to ensure the continuous operation of the device;

[0053] The filter screen 212 in the filter assembly 2 needs to be replaced after a certain number of times of cleaning, at this time the filter assembly 2 is horizontally slid under the action of the hydraulic cylinder 102, at this time the feed inlet of the filter assembly 2 is dislocated with the material guide pipe 3 and the flushing pipe 4, at this time the raw material in the filter assembly 2 stops entering, at this time the clamp 220 connecting the plunger 201 and the cylinder 202 in the filter assembly 2 can be removed, at this time the limiting between the plunger 201 and the cylinder 202 is released, at this time the cylinder 202 can drive the positioning seat 213 to move, so that the positioning seat 213 releases the limiting of one end of the filter screen 212, at this time the filter screen 212 can be removed and replaced, after the filter screen 212 is replaced, the plunger 201 and the cylinder 202 are connected through the clamp 220, and the position of the positioning seat 213 is adjusted by rotating the adjusting bolt 216, so that the positioning seat 213 tightly presses one end of the filter screen 212, at this time the installation of the filter screen 212 can be completed, then the position of the filter assembly 2 is adjusted, so that the filter assembly 2 is reset, at this time the filter screen replacement work of the filter screen 212 can be completed;

[0054] In the process of cleaning the filter assembly 2, the cleaning agent can enter the inside of the filter screen 212 through the flushing pipe 4, the guide pipe 204 and the discharge pipe 208 in turn, so as to realize the flushing of the blocked waste slag on the filter screen 212, the waste slag and the cleaning agent can be discharged through the slag discharge groove 217 on the end cover 215 and the backwashing sewage valve 218, after the cleaning work is completed, the compressed gas pipeline can be connected to the flushing pipe 4, so that the compressed gas enters the inside of the filter assembly 2, the compressed gas cooperates with the cleaning agent, which can realize more thorough cleaning effect, at the same time, the cleaning agent can be injected from the discharge direction of the device, so that the cleaning agent flows reversely in the filter assembly 2, to achieve the purpose of backwashing, so as to realize more thorough cleaning of the filter screen 212.

[0055] Finally, it should be noted that: the above only describes the preferred embodiments of the present application and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. Candle backflush screen changer, characterized in that The device includes a housing assembly, a filter assembly, a feed pipe, and a flushing pipe. Two sets of filter assemblies are provided, both located inside the housing assembly. Two sets of feed pipes and flushing pipes are also provided, extending through the middle of both sides of the housing assembly. The housing assembly includes a shell, with two hydraulic cylinders located on one side. The filter assembly includes a plunger and a cylinder, with the cylinder located at one end of the plunger. Both the cylinder and the plunger are hollow structures and located inside the shell. The feed pipe is a three-way pipe, with both ends extending through the inner wall of the shell. Two grooves are formed on both inner walls of the shell. The inner ends of the guide pipe and the flushing pipe extend to the inner wall of the groove. Two guide tubes are fixedly installed at one end of the plunger. A slider is fixedly installed at one end of the guide tube. A sealing plate is fixedly installed on the outer wall of the slider. One end of the guide tube extends to the outer wall of the sealing plate. The sealing plate is located inside the groove. A feed pipe is fixedly installed at one end of one guide tube. One end of the feed pipe extends to the inside of the plunger. A discharge pipe is fixedly installed at one end of the other guide tube. A fixed cover is fixedly installed at one end of the discharge pipe. The fixed cover is located inside the plunger. A guide seat is set inside the fixed cover. Multiple extension covers are arranged through the middle of the guide seat. The extension covers are designed as trumpet-shaped structures. Multiple filter screens are set on one side of the extension covers. A positioning seat is set at one end of the filter screen. The positioning seat is located inside the cylinder. Multiple positioning covers corresponding to the filter screens are fixedly installed on one side of the positioning seat. When the slider slides in the groove, one end of the guide tube coincides with or is misaligned with the guide pipe and the flushing pipe, respectively, to realize the switching of the pipeline connected to the filter assembly.

2. The candle backflush screen changer of claim 1, wherein: An end cap is provided at one end of the cylinder, and an adjusting bolt is provided in the screw hole in the middle of the end cap. One end of the adjusting bolt is movably mounted on the outer wall of the positioning seat through a bearing.

3. The candle backflush screen changer of claim 2, wherein: A slag discharge trough is provided through the bottom of the outer wall of the end cap, and a backwash drain valve is fixedly installed at the opening of the slag discharge trough. The backwash drain valve is located on the outside of the end cap.

4. The candle backflush screen changer of claim 3, wherein: Both the plunger and the cylinder are fixedly equipped with a locking block at their respective ends. The locking block is a ring structure with a right-angled trapezoidal cross-section and a clamp on the outside of the locking block.

5. The candle backflush screen changer of claim 4, wherein: The cross-section of the filter screen is designed with a ring-shaped wavy structure.

6. The candle type backflushing screen changer according to claim 5, characterized in that: The sealing plate is made of rubber, and its outer wall fits against the bottom of the groove.

7. The candle backflush screen changer of claim 6, wherein: A mounting base is fixedly installed at one end of the hydraulic cylinder, and multiple support bolts are fixedly installed between the mounting base and the housing. A connecting base is fixedly installed at one end of the plunger, and the connecting base is fixedly installed at the output end of the hydraulic cylinder.

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