Double-cylinder type filtering device of sheet inserting machine

Abstract

The invention relates to the technical field of semiconductor industrial production, in particular to a double-cylinder type filter device of a wafer inserting machine, which comprises a connecting sleeve and a hollow filter cylinder, a communicating hole, a circulating hole, a water inlet and outlet hole, a redirection valve seat, a valve core and a top cover are arranged in the connecting sleeve, a fluted disc is arranged on the valve core, a filter mechanism is arranged in the hollow filter cylinder, and the filter mechanism comprises a C-shaped filter plate and a bearing. A filter cartridge top seal is arranged on the C-shaped filter plate; a bevel gear is arranged on the bottom side of the filter cartridge top seal; a change-over valve is arranged in the circulating hole. The direction of water flow is changed through the redirection valve seat, circulating water enters the hollow filter cartridge on one side of the connecting sleeve, makes contact with the C-shaped filter plate on the bottom side of the hollow filter cartridge to enter the circulating hole, and then flows into the hollow filter cartridge on the other side through the sunken part in the bottom side of the change-over valve to be filtered again; the water level in the hollow filter cartridges rises to the position of the communicating hole and enters the inlet hole in the other side of the redirection valve seat, so that the utilization rate of the two hollow filter cartridges is improved, and the cleanliness of circulating water can be improved through two times of filtration.

Description

Technical Field

[0001] The invention relates to a filtering device, in particular to a double-cylinder filtering device for a chip inserting machine, and belongs to the technical field of semiconductor industrial production. Background Art

[0002] Wafer inserters are equipment used in the semiconductor industry to process silicon wafers and insert them into appropriate carriers for subsequent processing and manufacturing. Cleaning during silicon wafer processing is a very important part of the semiconductor manufacturing process. It can ensure that the surface of the silicon wafer is clean, free of impurities and meets the requirements of the manufacturing process. The circulating water used for cleaning needs to pass through a filtration device to remove the silicon powder inside to improve the cleanliness of the silicon wafer.

[0003] According to a double-barrel filter device for a sheet inserting machine disclosed in a Chinese patent document with announcement number CN207871654U, a double filter barrel circulation filtration system and a corresponding pipeline arrangement are adopted. The double filter barrels are used interchangeably, and the filter device does not need to be shut down for cleaning, thereby ensuring continuous production, improving production efficiency, increasing production capacity, and saving labor costs.

[0004] Based on the search of the above patents and combined with the equipment in the prior art, it is found that when cleaning silicon wafers, not only solid impurities such as silicon powder and dust on the surface need to be cleaned, but also organic solvents, acidic and alkaline solutions, cleaning agents, etc. that dissolve grease or oxides on the surface need to be cleaned. Therefore, the circulating water contains a small amount of organic matter or impurity ions soluble in water, which needs to be filtered multiple times. However, the above patent can only use one of the filter cartridges for filtering while the other is idle by switching the pneumatic valve between the two barrels, which will cause a waste of resources, and only solid filtration will reduce the cleanliness of the circulating water.

[0005] Therefore, it is urgent to improve the double-cylinder filter device of the inserting machine to solve the above-mentioned problems. Summary of the invention

[0006] The purpose of the present invention is to provide a double-cylinder filter device for an inserting machine, which changes the direction of water flow through a redirecting valve seat, so that circulating water enters the hollow filter cartridge on one side of the connecting sleeve, contacts the C-type filter plate at the bottom side of the hollow filter cartridge and enters the circulation hole, and then flows into the hollow filter cartridge on the other side through the depression on the bottom side of the conversion valve for filtration again. The water level in the hollow filter cartridge rises to the position of the connecting hole and enters the inlet hole on the other side of the redirecting valve seat, thereby improving the utilization rate of the two hollow filter cartridges. After two filtrations, the cleanliness of the circulating water can also be improved.

[0007] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0008] A double-barrel filter device for a sheet inserting machine, comprising a connecting sleeve and hollow filter cartridges fixedly arranged at both ends of the connecting sleeve, wherein a connecting sleeve is provided with a communicating hole and a circulation hole, wherein the hollow filter cartridges on both sides of the connecting sleeve are connected with the circulation hole through the communicating hole, wherein the connecting sleeve is provided with a water inlet and outlet hole at a position corresponding to the communicating hole, wherein the water inlet and outlet hole penetrates both sides of the connecting sleeve and is connected with the communicating hole, wherein a reversing valve seat is fixedly arranged at a position where the communicating hole and the water inlet and outlet hole intersect, wherein a valve core is rotatably arranged inside the reversing valve seat, wherein the valve core penetrates the reversing valve seat and the connecting sleeve and extends to the top of the connecting sleeve;

[0009] A top cover is fixedly installed on the top of the connecting sleeve by bolts, the valve core extends to the top of the top cover, a toothed disc is fixedly installed on the valve core, the toothed disc is rotatably arranged on the bottom side of the top cover, the toothed disc is rotatably arranged on the connecting sleeve through the toothed disc, a filtering mechanism is rotatably arranged inside the hollow filter cartridge, the filtering mechanism comprises two C-type filter plates distributed up and down and a bearing fixedly arranged between the two C-type filter plates, a filter cartridge top seal is fixedly connected to the upper end of the C-type filter plate, the bottom side of the filter cartridge top seal is rotatably connected to the upper end of the hollow filter cartridge, the C-type filter plate corresponds to the connecting hole and the circulation hole respectively, a bevel gear is fixedly arranged on the bottom side of the filter cartridge top seal, and the bevel gear is meshed with the toothed disc;

[0010] A conversion valve is rotatably arranged inside the circulation hole, a depression is provided on the bottom side of the conversion valve, two ends of the circulation hole are connected through the depression, a valve stem is fixedly mounted on the conversion valve, and the valve stem extends to the outside of the connecting sleeve.

[0011] Preferably, during the rotation of the valve core, the rotation directions of the filtering mechanisms inside the hollow filter cartridges on both sides are opposite, the arrangement directions of the C-type filter plates on both sides of the connecting sleeve are the same, and during the rotation of the filter cartridge top seal, the filtering mechanism is rotatably arranged inside the hollow filter cartridge through the bearing.

[0012] Preferably, the connecting sleeve is provided with a water outlet pipe at a position corresponding to the conversion valve, and the water outlet pipe is arranged below the water inlet and outlet holes. The conversion valve is provided with an L-shaped drainage hole, and the L-shaped drainage hole extends to the interior of the water outlet pipe. A rubber ring is fixedly provided at one end of the valve stem away from the water outlet pipe, and when the depression is facing downward, the rubber ring abuts against the inner wall of the circulation hole.

[0013] Preferably, a flange is fixedly installed on the connection sleeve at a position corresponding to the water inlet and outlet holes, the flange is distributed on both sides of the connection sleeve, and a plurality of evenly distributed screw holes are fixedly provided on the flange.

[0014] Preferably, one end of the recess away from the water outlet pipe is fixedly connected to a second handle, and the second handle is rotatably arranged below the flange.

[0015] Preferably, the bottom side of the hollow filter cartridge is screwed and connected with a filter cartridge bottom seal through a thread, a vertical rod is fixedly provided on the filter cartridge bottom seal, the vertical rod extends to the bottom side of the filter cartridge top seal, a plurality of evenly distributed filter elements are fixedly installed on the vertical rod, and the filter elements are arranged inside the C-type filter plate.

[0016] Preferably, ultrafiltration membranes are fixedly installed on the upper and lower sides of the filter element, and ion exchange resin is fixedly arranged inside the ultrafiltration membrane.

[0017] Preferably, a cross four-way groove is provided inside the redirecting valve seat, and the ports of the cross four-way groove are respectively connected to the connecting hole and the water inlet and outlet holes, and an elliptical baffle is fixedly connected to the bottom end of the valve core, and the elliptical baffle is rotatably arranged inside the cross four-way groove, and during the rotation of the elliptical baffle, the edge of the elliptical baffle is against the corner of the cross four-way groove.

[0018] Preferably, a damping plate is fixedly mounted on the top cover, the valve core extends above the damping plate, a first handle is fixedly connected to the upper end of the valve core, the first handle extends above the hollow filter cartridge, and a direction mark is fixedly provided on the top cover, the arrow of the direction mark is consistent with the outlet direction of the water outlet pipe.

[0019] Preferably, limiting pin holes are fixedly provided on both sides of the hollow filter cartridge, and limiting grooves are provided on the filter cartridge top seal at positions corresponding to the limiting pin holes, and the limiting pin holes and the limiting grooves are used to limit the filtering mechanism.

[0020] The present invention has at least the following beneficial effects:

[0021] 1. The present invention changes the direction of water flow through the redirecting valve seat. The circulating water enters the hollow filter cartridge on one side of the connecting sleeve, contacts the C-type filter plate at the bottom side of the hollow filter cartridge and enters the circulation hole. Then, it flows into the hollow filter cartridge on the other side through the depression on the bottom side of the conversion valve to be filtered again. The water level in the hollow filter cartridge rises to the position of the connecting hole and enters the inlet hole on the other side of the redirecting valve seat, thereby improving the utilization rate of the two hollow filter cartridges. After two filtrations, the cleanliness of the circulating water can also be improved.

[0022] 2. When the valve core of the present invention rotates, the toothed disc rotates on the connecting sleeve, and the top seal of the filter cartridge rotates through the bevel gear. At this time, the C-type filter plate rotates with the top seal of the filter cartridge, so that the circulating water will not be blocked by the C-type filter plate when it flows into the hollow filter cartridge. When the circulating water flows out of the hollow filter cartridge, it needs to be filtered by the C-type filter plate. Therefore, the C-type filter plate can selectively block the two ends of the connecting hole and the circulation hole as the inflow direction of the circulating water changes, which can not only prevent impurities from remaining in the connecting hole and the circulation hole to cause blockage, but also allow impurities and suspended particles to remain in the interior of the hollow filter cartridge for easy cleaning.

[0023] 3. When the filter device in the left hollow filter cartridge is replaced by the present invention, the circulating water is introduced into the right hollow filter cartridge by rotating the valve core, and the second handle is rotated clockwise to drive the L-shaped drainage hole to be opposite to the right hollow filter cartridge. After the circulating water is filtered by the filter device on the right, it flows into the circulation hole, and then enters the outlet pipe through the guidance of the L-shaped drainage hole and flows into the water outlet bin of the inserting machine. At this time, the filter device on the left can be replaced, and the filter device on the right is replaced by the reverse operation, thereby realizing the non-stop operation of replacing the double-cylinder filter device, thereby improving production efficiency.

[0024] 4. The bottom seal of the filter cartridge of the present invention is used to seal the hollow filter cartridge, and can also be used to install and support the vertical rod and the filter element. The filter element is arranged inside the C-type filter plate. When the filter device needs to be replaced or cleaned, the inflow direction of the circulating water is changed by the valve core and the conversion valve, and the bottom seal of the filter cartridge is removed from the bottom side of the hollow filter cartridge. At this time, the filter element and the filter device can be cleaned, which is simple and quick.

[0025] 5. Ultrafiltration membranes are fixedly installed on the upper and lower sides of the filter element of the present invention, and ion exchange resins are fixedly arranged inside the ultrafiltration membranes. The ultrafiltration membranes are used to remove tiny particles, organic matter, bacteria and other microorganisms in the water. The ion exchange resins can remove impurity ions in the water through ion exchange. Through the ion exchange, cations or anions in the water are fixed on the resin, and the released hydrogen ions or hydroxide ions are combined with OH- ions in the water to generate water, thereby completing the water purification.

[0026] 6. The arrow of the direction indicator of the present invention is consistent with the outlet direction of the water outlet pipe, which prevents the staff from confusing the input direction when docking the flange. The first handle is convenient for the staff to operate and also has a pointing function. When the first handle is rotated 180 degrees, the elliptical baffle and the corner on the other side of the cross four-way groove are offset, so that the first handle can point to the hollow filter cartridge into which the circulating water flows, which is convenient for the replacement of the filtering mechanism, thereby improving the installation efficiency and the replacement efficiency of the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0028] Figure 1 The overall elevation diagram provided by the present invention;

[0029] Figure 2 A longitudinal cross-sectional schematic diagram provided by the present invention;

[0030] Figure 3 A longitudinal sectional elevation view provided by the present invention;

[0031] Figure 4 A transverse cross-sectional elevation view provided by the present invention;

[0032] Figure 5 A schematic diagram of the filtering mechanism provided by the present invention;

[0033] Figure 6 A sectional elevation view of a redirecting valve seat provided by the present invention;

[0034] Figure 7 A schematic diagram of the valve core operation provided by the present invention;

[0035] Figure 8 A cross-sectional elevation view of a conversion valve provided by the present invention;

[0036] Fig. 9 A schematic diagram of the operation of the conversion valve provided by the present invention;

[0037] Fig.10 This is a schematic diagram of the filter element structure provided by the present invention.

[0038] In the figure, 1, connecting sleeve; 2, hollow filter cartridge; 21, limit pin hole; 3, connecting hole; 4, circulation hole; 5, water inlet and outlet hole; 6, redirecting valve seat; 61, cross four-way groove; 7, valve core; 71, gear plate; 72, elliptical baffle; 73, first handle; 8, top cover; 81, damping plate; 82, direction indicator; 9, filtering mechanism; 91, C-type filter plate; 92, bearing; 93, filter cartridge top seal; 94, bevel gear; 95, limit groove; 10, conversion valve; 101, depression; 102, valve stem; 103, L-type drainage hole; 104, rubber ring; 105, second handle; 11, water outlet pipe; 12, filter cartridge bottom seal; 121, vertical pole; 122, filter element; 123, ultrafiltration membrane; 124, ion exchange resin; 13, flange; 131, screw hole. DETAILED DESCRIPTION

[0039] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0040] like Figure 1-Figure 10 As shown, the insert machine double-barrel filter device provided in this embodiment includes a connecting sleeve 1 and hollow filter cartridges 2 fixedly arranged at both ends of the connecting sleeve 1, the connecting sleeve 1 is used to fix the two hollow filter cartridges 2, the connecting sleeve 1 is provided with a connecting hole 3 and a circulation hole 4, the hollow filter cartridges 2 on both sides of the connecting sleeve 1 are connected with the circulation hole 4 through the connecting hole 3, the connecting sleeve 1 is provided with a water inlet and outlet hole 5 at the position corresponding to the connecting hole 3, the water inlet and outlet hole 5 runs through both sides of the connecting sleeve 1 and is connected with the connecting hole 3, the water inlet and outlet hole 5 is used to guide the inlet and outlet of circulating water, the position where the communicating hole 3 and the water inlet and outlet hole 5 intersect is fixedly provided with a redirecting valve seat 6, the interior of the redirecting valve seat 6 is rotatably provided with a valve core 7, the valve core 7 runs through the redirecting valve seat 6 and the connecting sleeve 1 and extends to the top of the connecting sleeve 1, the valve core 7 and the redirecting valve seat 6 are used to change the flow direction of the circulating water;

[0041] The top of the connecting sleeve 1 is fixedly installed with a top cover 8 by bolts, the valve core 7 extends to the top of the top cover 8, a toothed disc 71 is fixedly installed on the valve core 7, the toothed disc 71 is rotatably arranged on the bottom side of the top cover 8, the toothed disc 71 is rotatably arranged on the connecting sleeve 1 through the toothed disc 71, and a filtering mechanism 9 is rotatably arranged inside the hollow filter cartridge 2, the filtering mechanism 9 includes two C-type filter plates 91 distributed up and down and a bearing 92 fixedly arranged between the two C-type filter plates 91, and the upper end of the C-type filter plate 91 is fixedly connected with a filter cartridge top seal 93, the bottom side of the filter cartridge top seal 93 is rotatably connected to the upper end of the hollow filter cartridge 2, the C-type filter plate 91 corresponds to the connecting hole 3 and the circulation hole 4 respectively, a bevel gear 94 is fixedly arranged on the bottom side of the filter cartridge top seal 93, and the bevel gear 94 is meshed with the toothed disc 71; a conversion valve 10 is rotatably arranged inside the circulation hole 4, a recess 101 is opened on the bottom side of the conversion valve 10, and the two ends of the circulation hole 4 are connected through the recess 101, and a valve stem 102 is fixedly installed on the conversion valve 10, and the valve stem 102 extends to the outside of the connecting sleeve 1;

[0042] Among them, the circulating water enters the redirecting valve seat 6 through the water inlet and outlet hole 5 on one side of the connecting sleeve 1. The rotating valve core 7 can change the direction of the water flow through the redirecting valve seat 6, guide the circulating water into one of the hollow filter cartridges 2, and contact with the C-type filter plate 91 on the bottom side of the hollow filter cartridge 2 to enter the circulation hole 4, and then flow into the hollow filter cartridge 2 on the other side through the recess 101 on the bottom side of the conversion valve 10 for filtration again. The water level in the hollow filter cartridge 2 rises to the position of the connecting hole 3 and enters the inlet hole on the other side of the redirecting valve seat 6, and flows into the outlet of the water inlet and outlet hole 5 through the inlet hole on the other side of the redirecting valve seat 6, thereby achieving the purpose of circulating cleaning of the two hollow filter cartridges 2, thereby improving the utilization rate of the two hollow filter cartridges 2, and the cleanliness of the circulating water can also be improved after two filtrations.

[0043] In order to solve the problem of residual impurities at the entrance of the hollow filter cartridge 2, during the rotation of the valve core 7, the rotation directions of the filter mechanisms 9 inside the hollow filter cartridges 2 on both sides are opposite, the upper and lower C-type filter plates 91 in the filter mechanism 9 are symmetrically distributed in the horizontal direction, and the C-type filter plates 91 on both sides of the connecting sleeve 1 are arranged in the same direction. During the rotation of the filter cartridge top seal 93, the filter mechanism 9 is rotated by the bearing 92 and is arranged inside the hollow filter cartridge 2. When the valve core 7 rotates, the toothed disc 71 rotates on the connecting sleeve 1 and drives the filter cartridge top seal 93 to rotate through the bevel gear 94. At this time, The C-type filter plate 91 rotates with the filter cartridge top seal 93, so that the circulating water will not be blocked by the C-type filter plate 91 when flowing into the hollow filter cartridge 2, and the circulating water needs to be filtered through the C-type filter plate 91 when flowing out of the hollow filter cartridge 2. Therefore, the C-type filter plate 91 can selectively block the two ends of the connecting hole 3 and the circulating hole 4 as the inflow direction of the circulating water changes, which can not only prevent impurities from remaining in the connecting hole 3 and the circulating hole 4 to cause blockage, but also allow impurities and suspended particles to remain in the hollow filter cartridge 2 for easy cleaning.

[0044] Further, such as Figure 1-Figure 10As shown, the connection sleeve 1 is provided with a water outlet pipe 11 at a position corresponding to the conversion valve 10. The water outlet pipe 11 is used to deal with the problem of non-stop drainage during the replacement of the filter mechanism 9. The water outlet pipe 11 is arranged below the water inlet and outlet holes 5. The conversion valve 10 is provided with an L-shaped drainage hole 103. The L-shaped drainage hole 103 extends to the inside of the water outlet pipe 11. During the rotation of the conversion valve 10 through the valve stem 102, the L-shaped drainage hole 103 is used to guide the water of the circulation hole 4 into the water outlet pipe 11. A rubber ring 104 is fixedly provided at one end of the L-shaped drainage hole 103 away from the water outlet pipe 11. When the depression 101 is downward, the rubber ring 104 abuts against the inner wall of the circulation hole 4. The rubber ring 104 is used to increase the L The sealing performance of the inlet of the drainage hole 103 is improved. A flange 13 is fixedly installed at the position of the connecting sleeve 1 corresponding to the water inlet and outlet hole 5. The flanges 13 are distributed on both sides of the connecting sleeve 1. The flange 13 is used for docking with the water pump pipe. The outlet pipe 11 and the flange 13 on the upper side of the outlet pipe 11 can be docked with the water inlet bin or the water inlet pipe of the inserting machine. A plurality of evenly distributed screw holes 131 are fixedly arranged on the flange 13, which can improve the sealing performance of the double-cylinder filter device. The end of the valve stem 102 away from the outlet pipe 11 is fixedly connected with a second handle 105. The second handle 105 is rotatably arranged below the flange 13. The second handle 105 is used to drive the conversion valve 10 to rotate through the valve stem 102;

[0045] Among them, when replacing the filter mechanism 9 in the left hollow filter cartridge 2, the circulating water is introduced into the right hollow filter cartridge 2 by rotating the valve core 7, and at the same time, the second handle 105 is rotated clockwise by 90 degrees to rotate the L-shaped drainage hole 103 to be opposite to the right hollow filter cartridge 2. After the circulating water is filtered by the filter mechanism 9 on the right, it flows into the circulation hole 4, and then enters the outlet pipe 11 through the guidance of the L-shaped drainage hole 103 and flows into the water outlet bin of the inserting machine. At this time, the filter mechanism 9 on the left can be replaced, and the filter mechanism 9 on the right is replaced by the reverse operation, thereby realizing the non-stop operation of replacing the filter mechanism 9 of the double-cylinder filter device, thereby improving production efficiency.

[0046] Furthermore, if Figure 1-Figure 10 As shown, the bottom side of the hollow filter cartridge 2 is screwed and connected with a filter cartridge bottom seal 12 through a thread, and a vertical rod 121 is fixedly arranged on the filter cartridge bottom seal 12, and the vertical rod 121 extends to the bottom side of the filter cartridge top seal 93, and a plurality of evenly distributed filter elements 122 are fixedly installed on the vertical rod 121. The filter cartridge bottom seal 12 is used to seal the hollow filter cartridge 2, and can also be used to install and support the vertical rod 121 and the filter element 122. The filter element 122 is arranged inside the C-type filter plate 91. When the filter mechanism 9 needs to be replaced or cleaned, the inflow direction of the circulating water is changed through the valve core 7 and the conversion valve 10, and the filter cartridge bottom seal 12 is removed from the bottom side of the hollow filter cartridge 2. At this time, the filter element 122 and the filter mechanism 9 can be cleaned, which is simple and quick.

[0047] In order to solve the problem of residual impurity ions in the circulating water, ultrafiltration membranes 123 are fixedly installed on the upper and lower sides of the filter element 122, and ion exchange resins 124 are fixedly arranged inside the ultrafiltration membrane 123. The ultrafiltration membrane 123 is used to remove tiny particles, organic matter, bacteria and other microorganisms in the water. The ion exchange resin 124 can remove impurity ions in the water through ion exchange. The ion exchange resin 124 in the filter element 122 in the hollow filter cartridge 2 on the left is a cation exchange resin, and the functional group of the cation exchange resin is carboxyl (R-COOH) and exchanges and removes part of the impurity ions; taking the removal of calcium ions in circulating water as an example, the specific exchange reaction formula is:

[0048] R-COOH+Ca^2+->R-Ca^2++H^+;

[0049] Among them, the ion exchange resin 124 in the filter element 122 of the hollow filter cartridge 2 on the right is an anion exchange resin, and the functional group of the anion exchange resin is an amine group (-NH2) and exchanges and removes part of the impurity ions; taking the removal of chloride ions in circulating water as an example, the specific exchange reaction formula is:

[0050] R-NH2+Cl^-+H^+->R-NH3^+Cl-;

[0051] Through this ion exchange, the cations or anions in the water are fixed on the resin, and the released hydrogen ions or hydroxide ions combine with the OH- ions in the water to generate water, thereby completing the water purification.

[0052] Further, if Figure 1-Figure 10 As shown, a cross four-way groove 61 is provided inside the redirection valve seat 6, and the ports of the cross four-way groove 61 are respectively connected to the connecting hole 3 and the water inlet and outlet hole 5. An elliptical baffle 72 is fixedly connected to the bottom end of the valve core 7. The elliptical baffle 72 is rotatably arranged inside the cross four-way groove 61. During the rotation of the elliptical baffle 72, its edge abuts against the corner of the cross four-way groove 61. A damping plate 81 is fixedly installed on the top cover 8. The valve core 7 extends to the top of the damping plate 81. The damping plate 81 limits the elliptical baffle 72 to a rotation angle of 180 degrees at one time. A first handle 73 is fixedly connected to the upper end of the valve core 7. The first handle 73 extends to the top of the hollow filter cartridge 2, and a direction mark 82 is fixedly provided on the top cover 8. The arrow of the direction mark 82 is consistent with the outlet direction of the water outlet pipe 11, so as to prevent the staff from confusing the input direction when docking the flange 13. The first handle 73 is convenient for the staff to operate and also has a directional function. When the first handle 73 is rotated 180 degrees, the elliptical baffle 72 and the other side corner of the cross four-way groove 61 are offset, so that the first handle 73 can be pointed to the hollow filter cartridge 2 where the circulating water flows in, so as to facilitate the replacement of the filtering mechanism 9, thereby improving the installation efficiency and the replacement efficiency of the filter element 122.

[0053] Furthermore, if Figure 1-Figure 10 As shown, limit pin holes 21 are fixedly provided on both sides of the hollow filter cartridge 2, and a limit groove 95 is provided at the position of the limit pin hole 21 at the filter cartridge top seal 93. The limit pin hole 21 and the limit groove 95 are used to limit the filtering mechanism 9. When the double-cylinder filter device is working normally, pins can be inserted into the limit pin hole 21 and the limit groove 95 to improve the stability of the double-cylinder filter device when in use.

[0054] like Figure 1-Figure 10 As shown, the principle of the double-barrel filter device for the inserting machine provided in this embodiment is as follows:

[0055] Circulating water enters the reversing valve seat 6 through the water inlet and outlet hole 5 on one side of the connecting sleeve 1. The rotating valve core 7 can change the direction of the water flow by reversing the valve seat 6, guiding the circulating water to enter one of the hollow filter cartridges 2, and contacting the C-type filter plate 91 at the bottom side of the hollow filter cartridge 2 to enter the circulation hole 4, and then flows into the hollow filter cartridge 2 on the other side through the depression 101 on the bottom side of the conversion valve 10 for filtration again. The water level in the hollow filter cartridge 2 rises to the position of the connecting hole 3 and enters the inlet hole on the other side of the reversing valve seat 6, and flows into the outlet of the water inlet and outlet hole 5 through the inlet hole on the other side of the reversing valve seat 6, thereby achieving the purpose of circulating cleaning of the two hollow filter cartridges 2. When the valve core 7 rotates, the toothed disk 71 rotates on the connecting sleeve 1, and drives the filter cartridge top seal 93 to rotate through the bevel gear 94. At this time, the C-type filter plate 91 rotates with the filter cartridge top seal 93, so that no matter when the circulating water flows into the hollow filter cartridge 2, it will not be blocked by the C-type filter plate 91, and when the circulating water flows out of the hollow filter cartridge 2, it needs to pass through The C-type filter plate 91 is used for filtering, so the C-type filter plate 91 can selectively block the two ends of the connecting hole 3 and the circulating hole 4 as the circulating water inflow direction changes, which can not only prevent impurities from remaining in the connecting hole 3 and the circulating hole 4 to cause blockage, but also allow impurities and suspended particles to remain in the hollow filter cartridge 2. When replacing the filter mechanism 9 in the left hollow filter cartridge 2, the circulating water is introduced into the hollow filter cartridge 2 on the right by rotating the valve core 7, and at the same time, the second handle 105 is rotated 90 degrees clockwise to drive the L-shaped drainage hole 103 to be opposite to the hollow filter cartridge 2 on the right. After the circulating water is filtered by the filter mechanism 9 on the right, it flows into the circulating hole 4, and then enters the outlet pipe 11 through the guidance of the L-shaped drainage hole 103 and flows into the water outlet bin of the inserting machine. At this time, the filter mechanism 9 on the left can be replaced, and the replacement of the filter mechanism 9 on the right is the reverse operation, thereby realizing the non-stop operation of replacing the filter mechanism 9 of the double-cylinder filter device.

[0056] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0057] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0058] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A double-cylinder filter device for a sheet inserter, comprising a connecting sleeve (1) and hollow filter cartridges (2) fixedly arranged at both ends of the connecting sleeve (1), characterized in that: The connecting sleeve (1) is provided with a connecting hole (3) and a circulation hole (4) inside. The hollow filter cartridges (2) on both sides of the connecting sleeve (1) are connected to each other through the connecting hole (3) and the circulation hole (4). The connecting sleeve (1) is provided with a water inlet and outlet hole (5) at a position corresponding to the connecting hole (3). The water inlet and outlet hole (5) passes through both sides of the connecting sleeve (1) and is connected to the connecting hole (3). A reversing valve seat (6) is fixedly provided at a position where the connecting hole (3) and the water inlet and outlet hole (5) intersect. A valve core (7) is rotatably provided inside the reversing valve seat (6). The valve core (7) passes through the reversing valve seat (6) and the connecting sleeve (1) and extends to the top of the connecting sleeve (1). A top cover (8) is fixedly mounted on the top of the connecting sleeve (1) by bolts, the valve core (7) extends to the top of the top cover (8), a toothed disc (71) is fixedly mounted on the valve core (7), the toothed disc (71) is rotatably arranged on the bottom side of the top cover (8), the toothed disc (71) is rotatably arranged on the connecting sleeve (1) through the toothed disc (71), and a filtering mechanism (9) is rotatably arranged inside the hollow filter cartridge (2), the filtering mechanism (9) comprising two C-shaped filtering plates ( 91) and a bearing (92) fixedly arranged between the two C-type filter plates (91), the upper end of the C-type filter plate (91) is fixedly connected with a filter cartridge top seal (93), the bottom side of the filter cartridge top seal (93) is rotatably connected to the upper end of the hollow filter cartridge (2), the C-type filter plate (91) corresponds to the connecting hole (3) and the circulation hole (4) respectively, the bottom side of the filter cartridge top seal (93) is fixedly arranged with a bevel gear (94), and the bevel gear (94) is meshed with the toothed disc (71); A conversion valve (10) is rotatably arranged inside the circulation hole (4), a recess (101) is provided on the bottom side of the conversion valve (10), and the two ends of the circulation hole (4) are connected through the recess (101). A valve stem (102) is fixedly mounted on the conversion valve (10), and the valve stem (102) extends to the outside of the connecting sleeve (1).

2. A double-tube filter device for a sheet inserting machine according to claim 1, characterized in that: During the rotation of the valve core (7), the filter mechanisms (9) inside the hollow filter cartridges (2) on both sides rotate in opposite directions, the C-type filter plates (91) on both sides of the connecting sleeve (1) are arranged in the same direction, and during the rotation of the filter cartridge top seal (93), the filter mechanism (9) is rotatably arranged inside the hollow filter cartridge (2) via the bearing (92).

3. The double-tube filter device for inserting a sheet machine according to claim 1, characterized in that: The connection sleeve (1) is provided with a water outlet pipe (11) at a position corresponding to the conversion valve (10), and the water outlet pipe (11) is arranged below the water inlet and outlet hole (5). The conversion valve (10) is provided with an L-shaped drainage hole (103), and the L-shaped drainage hole (103) extends into the interior of the water outlet pipe (11). A rubber ring (104) is fixedly provided at one end of the valve stem (102) away from the water outlet pipe (11), and when the depression (101) faces downward, the rubber ring (104) abuts against the inner wall of the circulation hole (4).

4. A double-tube filter device for a sheet inserting machine according to claim 3, characterized in that: The connection sleeve (1) is fixedly provided with a flange (13) at a position corresponding to the water inlet and outlet hole (5); the flange (13) is distributed on both sides of the connection sleeve (1); and a plurality of evenly distributed screw holes (131) are fixedly provided on the flange (13).

5. A double-tube filter device for a sheet inserting machine according to claim 4, characterized in that: A second handle (105) is fixedly connected to one end of the recess (101) away from the water outlet pipe (11), and the second handle (105) is rotatably arranged below the flange (13).

6. The double-tube filter device for inserting a sheet machine according to claim 1, characterized in that: The bottom side of the hollow filter cartridge (2) is screwed and connected to a filter cartridge bottom seal (12) via a thread, a vertical rod (121) is fixedly arranged on the filter cartridge bottom seal (12), the vertical rod (121) extends to the bottom side of the filter cartridge top seal (93), a plurality of evenly distributed filter elements (122) are fixedly mounted on the vertical rod (121), and the filter elements (122) are arranged inside the C-type filter plate (91).

7. A double-tube filter device for a sheet inserting machine according to claim 6, characterized in that: Ultrafiltration membranes (123) are fixedly mounted on the upper and lower sides of the filter element (122), and an ion exchange resin (124) is fixedly arranged inside the ultrafiltration membrane (123).

8. The double-tube filter device for a sheet inserting machine according to claim 3, characterized in that: A cross-shaped four-way groove (61) is provided inside the redirecting valve seat (6), and the ports of the cross-shaped four-way groove (61) are respectively connected to the connecting hole (3) and the water inlet and outlet hole (5). An elliptical baffle (72) is fixedly connected to the bottom end of the valve core (7), and the elliptical baffle (72) is rotatably arranged inside the cross-shaped four-way groove (61). During the rotation of the elliptical baffle (72), the edge of the elliptical baffle (72) abuts against the corner of the cross-shaped four-way groove (61).

9. The double-tube filter device for a sheet inserting machine according to claim 1, characterized in that: A damping plate (81) is fixedly mounted on the top cover (8), the valve core (7) extends above the damping plate (81), a first handle (73) is fixedly connected to the upper end of the valve core (7), the first handle (73) extends above the hollow filter cartridge (2), and a direction indicator (82) is fixedly arranged on the top cover (8), the arrow of the direction indicator (82) being consistent with the outlet direction of the water outlet pipe (11).

10. The double-tube filter device for a sheet inserting machine according to claim 1, characterized in that: Limiting pin holes (21) are fixedly provided on both sides of the hollow filter cartridge (2), and limiting grooves (95) are provided on the filter cartridge top seal (93) at positions corresponding to the limiting pin holes (21). The limiting pin holes (21) and the limiting grooves (95) are used to limit the filter mechanism (9).

Images