High pressure bidirectional line filter

Abstract

The utility model relates to hydraulic pressure filtration system technical field, especially in kind of high pressure two -way pipeline filter, including oil -conduction valve body, oil -conduction valve body is provided with filter element, check valve, pressure switch, oil -conduction valve body is six surface structural members, is provided with external pipeline oil inlet and outlet connection mouth, check valve plug -in hole, oil -conduction valve body and filter element between oil inlet and outlet port, pressure switch plug -in hole and each other intercommunication oil circuit hole, external pipeline connection mouth includes first pipeline connection mouth, second pipeline connection mouth, is used for with external pipeline connection, oil -conduction valve body and filter element between oil inlet and outlet port includes first working oil port, second working oil port, filter element includes oil filter chamber, clean oil chamber, oil filter chamber end part sets up oil filter chamber import, clean oil chamber end part sets up clean oil chamber export, second working oil port and oil filter chamber import intercommunication, first working oil port and clean oil chamber export intercommunication.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic system filter technology, and in particular to a high-pressure bidirectional pipeline filter. Background Technology

[0002] Filters are used in hydraulic system pressure lines to filter out mechanical impurities mixed in with hydraulic oil and colloids produced by the chemical reactions of the oil itself, thereby reducing the occurrence of hydraulic component failures and extending their service life.

[0003] Currently, most filters used in hydraulic pump stations are unidirectional filters, commonly used in hydraulic systems requiring unidirectional flow protection, such as for specific hydraulic circuits or component protection. In these scenarios, the flow direction of the hydraulic fluid is fixed. However, in actual hydraulic systems, the flow direction of the hydraulic oil needs to be frequently changed, such as when multiple hydraulic actuators work together. In these scenarios, due to the frequent changes in flow direction, using unidirectional filters may lead to poor filtration or increased system complexity, failing to provide adequate filtration, insufficient protection for the various actuators in the hydraulic system, and increased maintenance costs. Summary of the Invention

[0004] To overcome the shortcomings and deficiencies of existing technologies, the purpose of this utility model is to provide a high-pressure bidirectional pipeline filter. This utility model proposes a bidirectional pipeline high-pressure filter that solves the problem in related technologies where micro-particles in the pipeline between the actuator cylinder and the reversing valve are subjected to pressure impact and travel back and forth in the reversing valve guide groove, and then pass through the pressure regulating overflow valve into the oil tank. Obviously, under the continuous impact of high-pressure oil flow, the particles in this oil pipeline often get stuck between the reversing valve guide shaft and the guide groove. This phenomenon often causes the hydraulic oil pump station to malfunction in oil pressure, fail to increase pressure, and cause the operating state to become out of control and unable to be used normally.

[0005] The technical solution adopted by this utility model is: A high-pressure bidirectional pipeline filter includes an oil guide valve body, on which a filter element, a check valve, and a pressure switch are disposed. The oil guide valve body is provided with an external pipeline inlet / outlet connection port, a check valve insertion hole, an inlet / outlet port between the oil guide valve body and the filter element, a pressure switch insertion hole, and interconnected oil passages.

[0006] The external pipeline inlet and outlet oil connection ports include a first pipeline connection port and a second pipeline connection port. The oil inlet and outlet ports between the oil guide valve body and the filter element include a first working oil port and a second working oil port. The filter element includes an oil filter chamber and a clean oil chamber. An oil filter chamber inlet is provided at the end of the oil filter chamber, and a clean oil chamber outlet is provided at the end of the clean oil chamber. The second working port is connected to the inlet of the filter chamber, and the first working port is connected to the outlet of the clean oil chamber. External hydraulic oil enters the guide valve body through the first pipeline connection port, passes through a check valve and interconnected oil passages, and finally enters the filter chamber and clean oil chamber through the second working port and the filter chamber inlet. From the clean oil chamber outlet and the first working port, it enters the guide valve body, passes through a check valve and interconnected oil passages, and finally enters the external pipeline through the second pipeline connection port. External hydraulic oil enters the guide valve body through the second pipeline connection port, passes through a check valve and interconnected oil passages, and finally enters the filter chamber and clean oil chamber through the second working port and the filter chamber inlet. From the clean oil chamber outlet and the first working port, it enters the guide valve body, passes through a check valve and interconnected oil passages, and finally enters the external pipeline through the first pipeline connection port.

[0007] The oil guide valve body is a six-sided structure. A mounting boss is located at the center of the bottom of the oil guide valve body, and a mounting hole is provided within the mounting boss. A first working oil port is located at the center of the bottom of the mounting hole, and a second working oil port is located on the side of the first working oil port. A sixteenth channel is also provided at the bottom of the mounting hole. Four sets of one-way valve mounting holes are evenly distributed in a matrix on the top end face of the oil guide valve body: a first one-way valve insertion hole, a second one-way valve insertion hole, a third one-way valve insertion hole, and a fourth one-way valve insertion hole. A second channel is provided between the first and second one-way valve insertion holes, a third channel is provided between the second and third one-way valve insertion holes, and a first channel is provided between the first and fourth one-way valve insertion holes. A thirteenth channel is provided between them; a set of opposite side end faces of the oil guide valve body: a first side end face and a second side end face, a first pipeline connection port is provided on the first side end face, a second pipeline connection port is provided on the second side end face, the second pipeline connection port is opposite to the first pipeline connection port, a seventh channel is also provided on the first side end face, and an eighth channel is also provided on the second side end face; another set of opposite side end faces of the oil guide valve body: a third side end face and a fourth side end face, a pressure switch insertion hole is provided at the center of the third side end face, a twelfth channel is provided above the pressure switch insertion hole, a fifth channel is provided below the pressure switch insertion hole, and a fourth channel and a sixth channel are provided on both sides; a ninth channel is provided at the center of the fourth side end face, and a tenth channel and an eleventh channel are provided on both sides below the ninth channel.

[0008] The sixth channel penetrates the middle of the fourth check valve insert hole and connects to the middle of the first channel; the eleventh channel connects to the bottom of the first channel and the first check valve insert hole; the ninth channel connects to the middle of the second channel, the second working port connects to the bottom of the second channel, and the fifth channel connects to the first working port; the fourth channel penetrates the middle of the third check valve insert hole and connects to the middle of the third channel; the tenth channel connects to the bottom of the second check valve insert hole and the third channel; the seventh channel connects to the bottom of the third check valve insert hole and the fourth check valve insert hole; the first pipeline connection port connects to the first channel, and the second pipeline connection port connects to the third channel; the eighth channel penetrates the middle of the second check valve insert hole and connects to the middle of the first check valve insert hole.

[0009] The pressure switch insertion hole has a seventeenth channel at the bottom, the twelfth channel is connected to the upper part of the second channel, the thirteenth channel passes through the twelfth channel and is connected to the pressure switch insertion hole, and the sixteenth channel passes through the fifth channel and is connected to the seventeenth channel.

[0010] The walls of the first check valve insertion hole, the fourth check valve insertion hole, the second check valve insertion hole, and the third check valve insertion hole are provided with fastening screw holes.

[0011] The mounting hole inside the mounting boss also has a bypass valve mounting hole at the bottom, which is connected to the fifth channel.

[0012] The first pipe connection port is provided with a second mounting hole around its perimeter, and the second pipe connection port is provided with a fourth mounting hole around its perimeter.

[0013] The top end face of the oil guide valve body has four first mounting holes at the four corners, and the bottom end face has four third mounting holes at the four corners.

[0014] The beneficial effects of this utility model are: This utility model discloses a bidirectional pipeline high-pressure filter, including an oil guide valve body, a filter element, and a one-way valve. The oil guide valve body has an external pipeline inlet / outlet connection port, a one-way valve insertion hole, and an inlet / outlet port between the oil guide valve body and the filter element. The external pipeline inlet / outlet connection port includes a first pipeline connection port and a second pipeline connection port for connecting to an external oil pipeline. A one-way valve is installed in the one-way valve insertion hole to prevent backflow and ensure that the hydraulic oil flows only in one direction. The inlet / outlet port between the oil guide valve body and the filter element includes a first working oil port and a second working oil port. The second working oil port connects to the filter chamber of the filter element. The first working oil port is connected to the outlet of the clean oil chamber of the filter element. The oil guide valve body has several oil passages for connecting external pipeline inlet / outlet ports, a check valve insert, and inlet / outlet ports between the oil guide valve body and the filter element. This ensures that regardless of whether external oil enters the oil guide valve body from the first or second pipeline connection port, the hydraulic oil, controlled by the check valve and flowing through the various oil passages, enters the filter element's filter chamber from the second working oil port, then flows from the filter element's clean oil chamber outlet through the first working oil port into the oil guide valve body, and finally flows out from either the first or second pipeline connection port, achieving bidirectional filtration of the hydraulic oil. The oil guide valve body is also equipped with a pressure switch to monitor the filter element's blockage in real time, preventing abnormal system pressure caused by filter element blockage and ensuring stable operation of the hydraulic system and equipment safety. A bypass valve is also installed on the oil guide valve body, primarily to ensure a continuous supply of hydraulic oil when the filter element is blocked, preventing damage to the actuator. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure; Figure 2 Schematic diagram of the bidirectional control body structure Figure 1 ; Figure 3 Schematic diagram of the bidirectional control body structure Figure 2 ; Figure 4 for Figure 2 A bottom view; Figure 5 for Figure 2 Top view; Figure 6 for Figure 5 Cross-sectional view along section line AA; Figure 7 for Figure 5 Cross-sectional view along section line BB; Figure 8 for Figure 5 Cross-sectional view along section line CC; Figure 9 for Figure 5Cross-sectional view along section line DD; Figure 10 for Figure 5 Cross-sectional view along section line EE; Figure 11 for Figure 5 Cross-sectional view along section line FF; Figure 12 for Figure 1 Top view; Figure 13 for Figure 12 Cross-sectional structure diagram along section line GG; Figure 14 for Figure 12 Cross-sectional view along section line HH; Figure 15 This is a schematic diagram of hydraulic oil flow when the first working oil port is the oil inlet. Figure 16 This is a schematic diagram of hydraulic oil flow when the second working oil port is the oil inlet.

[0016] In the diagram: 1-Filter element, 101-Filter cartridge, 102-Oil filtration chamber, 103-Filter element, 104-Clean oil chamber, 105-Oil filtration chamber inlet, 106-Clean oil chamber outlet. 2-Oil guide valve body; 201-First pipeline connection port; 202-Second pipeline connection port; 203-First check valve insertion hole; 204-Second check valve insertion hole; 205-Third check valve insertion hole; 206-Fourth check valve insertion hole; 207-First channel; 208-Second channel; 209-Third channel; 210-Fourth channel; 211-Fifth channel; 212-Sixth channel; 213-Seventh channel; 214-Eighth channel; 215-Ninth channel; 216-Tenth channel; 217-Eleventh channel. 218 - Pressure switch insertion hole; 219 - Twelfth channel; 220 - Thirteenth channel; 221 - Fastening screw hole; 222 - First mounting hole; 223 - Second mounting hole; 224 - Mounting boss; 225 - First working oil port; 226 - Second working oil port; 227 - Sixteenth channel; 228 - Bypass valve mounting hole; 229 - Third mounting hole; 230 - Fourth mounting hole; 231 - First side end face; 232 - Second side end face; 233 - Third side end face; 234 - Fourth side end face; 235 - Seventeenth channel. 3-Check valve, 4-Pressure switch. Detailed Implementation

[0017] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, this utility model will be further described in detail. It should be understood that the specific embodiments described herein are only for explaining this utility model and are not intended to limit this utility model.

[0018] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0019] like Figure 1 As shown, a high-pressure bidirectional pipeline filter includes an oil guide valve body 2, on which a filter element 1, a one-way valve 3, and a pressure switch 4 are provided.

[0020] like Figure 14 As shown, the filter element 1 includes a filter cartridge 101 and a filter element 103. The filter element 103 is disposed inside the filter cartridge 101. The cavity between the filter cartridge 101 and the filter element 103 is the oil filtration chamber 102. The cavity inside the filter element 103 is the clean oil chamber 104. The oil filtration chamber 102 is provided with an oil filtration chamber inlet 105 at its end, and the clean oil chamber 104 is provided with a clean oil chamber outlet 106 at its end. The hydraulic oil in the external pipeline enters the oil filtration chamber 102 through the oil guide valve body 2 from the oil filtration chamber inlet 105, enters the clean oil chamber 104 through the filter element 103, and then enters the oil guide valve body 2 from the clean oil chamber outlet 106, and enters the external pipeline through the oil guide valve body 2.

[0021] like Figure 2-4 , Figure 14As shown, the oil guide valve body 2 is equipped with an external pipeline inlet / outlet connection port, a one-way valve insert hole, an inlet / outlet port between the oil guide valve body 2 and the filter element 1, a pressure switch insert hole, and interconnected oil passages. The external pipeline inlet / outlet connection port includes a first pipeline connection port 201 and a second pipeline connection port 202, used to connect to external oil pipelines. Hydraulic fluid in the external oil passages can be introduced into the oil guide valve body 2 through the first pipeline connection port 201 or the second pipeline connection port 202, filtered by the filter element 1, and then discharged out of the oil guide valve body 2 through the first pipeline connection port 201 or the second pipeline connection port 202. A one-way valve 3 is installed in the one-way valve insert hole to prevent liquid backflow, ensure that the hydraulic oil flows only in one direction, and improve system stability and safety. A pressure switch 4 is installed in the pressure switch insert hole to monitor the filter element's blockage in real time, preventing abnormal system pressure caused by filter element blockage, ensuring stable operation of the hydraulic system and equipment safety. The oil inlet and outlet ports between the oil guide valve body 2 and the filter element 1 include a first working oil port 225 and a second working oil port 226. The second working oil port 226 is connected to the oil filter chamber inlet 105, and the first working oil port 225 is connected to the clean oil chamber outlet 106. The oil in the external pipeline enters the oil filter chamber 102 through the second working oil port 226 and the oil filter chamber inlet 105 via the oil guide valve body 2, enters the clean oil chamber 104 through the filter element 103, and then enters the oil guide valve body 2 through the first working oil port 225 via the clean oil chamber outlet 106, and enters the external pipeline through the oil guide valve body 2.

[0022] like Figure 2-4 As shown, the oil guide valve body 2 is a six-sided structure. A mounting boss 224 is provided at the bottom of the oil guide valve body 2, and the mounting boss 224 is located at the center of the bottom, as shown. Figure 14 As shown, the mounting boss 224 has a mounting hole, and the filter element 1 is installed in the mounting hole. A first working oil port 225 is provided at the center of the bottom of the mounting hole in the mounting boss 224. A second working oil port 226 is provided on the side of the first working oil port 225. The second working oil port 226 is connected to the oil filter chamber inlet 105, and the first working oil port 225 is connected to the clean oil chamber outlet 106. A sixteenth channel 227 is also provided at the bottom of the mounting hole in the mounting boss 224. A third mounting hole 229 is provided at the four corners of the bottom end face of the oil guide valve body 2. The third mounting hole 229 is used to install the filter on other equipment.

[0023] like Figure 2-4As shown, the top end face of the oil guide valve body 2 is evenly provided with four sets of one-way valve mounting holes: a first one-way valve insertion hole 203, a second one-way valve insertion hole 204, a third one-way valve insertion hole 205, and a fourth one-way valve insertion hole 206; wherein, a second channel 208 is provided between the first one-way valve insertion hole 203 and the second one-way valve insertion hole 204, a third channel 209 is provided between the second one-way valve insertion hole 204 and the third one-way valve insertion hole 205, a first channel 207 is provided between the first one-way valve insertion hole 203 and the fourth one-way valve insertion hole 206, and a thirteenth channel 220 is provided between the third one-way valve insertion hole 205 and the fourth one-way valve insertion hole 206; and a first mounting hole 222 is provided at the four corners of the top end face of the oil guide valve body 2, the first mounting hole 222 being used to install the filter on other equipment.

[0024] like Figure 2-4 As shown, a set of opposing side end faces of the oil guide valve body 2: a first pipe connection port 201 and a second pipe connection port 202 are provided at the center of the first side end face 231 and the second side end face 232, respectively. The second pipe connection port 202 is positioned opposite to the first pipe connection port 201. The first pipe connection port 201 is located on the first side end face 231, and the second pipe connection port 202 is located on the second side end face 232. The first pipe connection port 201 is provided with second mounting holes 223 around its perimeter for installing external pipe connectors. The first side end face 231 is also provided with a seventh channel 213. The second pipe connection port 202 is provided with fourth mounting holes 230 around its perimeter for installing external pipe connectors. The second side end face 232 is also provided with an eighth channel 214.

[0025] like Figure 2-4 As shown, the other set of opposite side end faces of the oil guide valve body 2 are: third side end face 233 and fourth side end face 234. The third side end face 233 is provided with a pressure switch insertion hole 218 at its center. The pressure switch insertion hole 218 is provided with a twelfth channel 219 above it, a fifth channel 211 below it, and a fourth channel 210 and a sixth channel 212 on both sides. The fourth side end face 234 is provided with a ninth channel 215 at its center. The ninth channel 215 is provided with a tenth channel 216 and an eleventh channel 217 on both sides below it.

[0026] like Figure 5 , Figure 6 As shown, the fourth one-way valve insertion hole 206, the first channel 207, the first one-way valve insertion hole 203, the sixth channel 212, and the eleventh channel 217 are arranged on the same cross-sectional plane. The sixth channel 212 passes through the middle of the fourth one-way valve insertion hole 206 and communicates with the middle of the first channel 207. The eleventh channel 217 communicates with the bottom of the first channel 207 and the first one-way valve insertion hole 203.

[0027] like Figure 5 , Figure 7 As shown, the second channel 208, the thirteenth channel 220, the pressure switch insertion hole 218, the twelfth channel 219, the fifth channel 211, the sixteenth channel 227, the first working oil port 225, the second working oil port 226, and the ninth channel 215 are arranged on the same cross-sectional plane. The ninth channel 215 is connected to the middle of the second channel 208, the second working oil port 226 is connected to the bottom of the second channel 208, the fifth channel 211 is connected to the first working oil port 225, the twelfth channel 219 is connected to the upper part of the second channel 208, the thirteenth channel 220 passes through the twelfth channel 219 and is connected to the pressure switch insertion hole 218, the seventeenth channel 235 is provided at the bottom of the pressure switch insertion hole 218, and the sixteenth channel 227 passes through the fifth channel 211 and is connected to the seventeenth channel 235.

[0028] like Figure 14 As shown, a pressure switch 4 is inserted into the pressure switch insertion hole 218. The oil filter chamber 102 is connected to the pressure switch 4 through the oil filter chamber inlet 105, the second working oil port 226, the second channel 208, the twelfth channel 219, and the thirteenth channel 220. The clean oil chamber 104 is connected to the pressure switch 4 through the first working oil port 225, the fifth channel 211, the sixteenth channel 227, and the seventeenth channel 235. The pressure switch 4 is used to monitor the clogging of the filter element in real time, prevent abnormal system pressure caused by filter element clogging, and ensure the stable operation of the hydraulic system and the safety of the equipment.

[0029] like Figure 5 , Figure 8 As shown, the second one-way valve insertion hole 204, the third one-way valve insertion hole 205, the third channel 209, the fourth channel 210, and the tenth channel 216 are arranged in the same cross-sectional plane. The fourth channel 210 passes through the middle of the third one-way valve insertion hole 205 and communicates with the middle of the third channel 209. The tenth channel 216 communicates with the bottom of the second one-way valve insertion hole 204 and the third channel 209.

[0030] like Figure 5 , Figure 9 As shown, the third one-way valve insertion hole 205, the fourth one-way valve insertion hole 206, and the seventh channel 213 are arranged in the same cross-sectional plane, wherein the seventh channel 213 is connected to the bottom of the third one-way valve insertion hole 205 and the fourth one-way valve insertion hole 206.

[0031] like Figure 5 , Figure 10As shown, the first channel 207, the third channel 209, the first pipe connection port 201, and the second pipe connection port 202 are arranged on the same cross-sectional plane. The first pipe connection port 201 is connected to the first channel 207, and the second pipe connection port 202 is connected to the third channel 209.

[0032] like Figure 5 , Figure 11 As shown, the first one-way valve insertion hole 203, the second one-way valve insertion hole 204, and the eighth channel 214 are arranged in the same cross-sectional plane. The eighth channel 214 passes through the middle of the second one-way valve insertion hole 204 and communicates with the middle of the first one-way valve insertion hole 203.

[0033] All the external ports of the channels on the oil guide valve body 2 are equipped with plugs to seal the external ports and prevent hydraulic oil leakage inside the oil guide valve body 2.

[0034] like Figure 6 , Figure 8 As shown, the walls of the first check valve insertion hole 203, the fourth check valve insertion hole 206, the second check valve insertion hole 204, and the third check valve insertion hole 205 are provided with fastening screw holes 221. The fastening screw holes 221 are used to tighten the set screws to further secure the check valves installed in the first check valve insertion hole 203, the fourth check valve insertion hole 206, the second check valve insertion hole 204, and the third check valve insertion hole 205, so that the check valves are firmly installed and not easily loosened.

[0035] like Figure 2 ,like Figure 4 , Figure 12 , Figure 13 As shown, a bypass valve mounting hole 228 is also provided at the bottom of the mounting hole provided in the mounting boss 224. The bypass valve mounting hole 228 is connected to the fifth channel 211. A bypass valve is provided in the bypass valve mounting hole 228. When the filter element 103 in the filter element 1 is blocked due to excessive impurities, the bypass valve will open, and the hydraulic oil will flow directly from the oil guide valve body 2 into the hydraulic equipment without passing through the filter element 103, providing a buffer time for the maintenance of the hydraulic equipment, thereby avoiding major failures of the hydraulic equipment.

[0036] like Figure 15As shown, when hydraulic oil from outside the hydraulic pipeline enters the oil guide valve body 2 from the first pipeline connection port 201, the hydraulic oil travels along the following path: external pipeline → first pipeline connection port 201 → first channel 207 → eleventh channel 217 → check valve 3 installed in the first check valve insertion hole 203 → second channel 208 → second working oil port 226 → filter chamber inlet 105 → filter element 1 → clean oil chamber outlet 106 → first working oil port 225 → fifth channel 211 → seventh channel 213 → check valve 3 installed in the third check valve insertion hole 205 → fourth channel 210 → third channel 209 → second pipeline connection port 202 → external pipeline.

[0037] like Figure 16 As shown, when hydraulic oil from outside the hydraulic pipeline enters the oil guide valve body 2 from the first pipeline connection port 201, the hydraulic oil travels along the following path: external pipeline → second pipeline connection port 202 → third channel 209 → tenth channel 216 → check valve 3 installed in the second check valve insertion hole 204 → second channel 208 → second working oil port 226 → filter chamber inlet 105 → filter element 1 → clean oil chamber outlet 106 → first working oil port 225 → fifth channel 211 → check valve 3 installed in the fourth check valve insertion hole 206 → sixth channel 212 → first channel 207 → first pipeline connection port 201 → external pipeline.

[0038] When the filter of this bidirectional pipeline is installed in the hydraulic equipment, the hydraulic system can automatically switch the direction of hydraulic oil supply to achieve hydraulic oil filtration, without the need for disassembly and reversal as with conventional filters.

Claims

1. A high-pressure bidirectional pipeline filter, comprising an oil guide valve body (2), wherein the oil guide valve body (2) is provided with a filter element (1), a one-way valve (3), and a pressure switch (4), characterized in that: The oil guide valve body (2) is provided with an external pipeline inlet and outlet oil connection port, a one-way valve insertion hole, an oil inlet and outlet port between the oil guide valve body (2) and the filter element (1), a pressure switch insertion hole, and interconnected oil passages. The external pipeline inlet and outlet oil connection ports include a first pipeline connection port (201) and a second pipeline connection port (202). The oil inlet and outlet ports between the oil guide valve body (2) and the filter element (1) include a first working oil port (225) and a second working oil port (226). The filter element (1) includes an oil filter chamber (102) and a clean oil chamber (104). An oil filter chamber inlet (105) is provided at the end of the oil filter chamber (102), and a clean oil chamber outlet (106) is provided at the end of the clean oil chamber (104). The second working oil port (226) is connected to the oil filter chamber inlet (105), and the first working oil port (225) is connected to the clean oil chamber outlet (106); Hydraulic oil from the external pipeline enters the oil guide valve body (2) through the first pipeline connection port (201), and finally enters the filter chamber (102) and clean oil chamber (104) through the second working oil port (226) and the filter chamber inlet (105) via the check valve (3) and the interconnected oil passages. From the clean oil chamber outlet (106) and the first working oil port (225), it enters the oil guide valve body (2), and finally enters the external pipeline through the second pipeline connection port (202) via the check valve (3) and the interconnected oil passages. The hydraulic oil from the external pipeline enters the oil guide valve body (2) through the second pipeline connection port (202), and finally enters the oil filter chamber (102) and clean oil chamber (104) through the second working oil port (226) and the oil filter chamber inlet (105) through the check valve (3) and the interconnected oil passages. From the clean oil chamber outlet (106) and the first working oil port (225), it enters the oil guide valve body (2), and finally enters the external pipeline through the first pipeline connection port (201) through the check valve (3) and the interconnected oil passages.

2. The high-pressure bidirectional pipeline filter according to claim 1, characterized in that: The oil guide valve body (2) is a six-sided structure. A mounting boss (224) is provided at the center of the bottom of the oil guide valve body (2). A mounting hole is provided in the mounting boss (224). A first working oil port (225) is provided at the center of the bottom of the mounting hole. A second working oil port (226) is provided on the side of the first working oil port (225). A sixteenth channel (227) is also provided at the bottom of the mounting hole. Four sets of one-way valve mounting holes are evenly distributed on the top end face of the oil guide valve body (2): a first one-way valve insertion hole (203), a second one-way valve insertion hole (204), and a sixth one-way valve insertion hole (225). A third check valve insertion hole (205) and a fourth check valve insertion hole (206) are provided. A second channel (208) is provided between the first check valve insertion hole (203) and the second check valve insertion hole (204). A third channel (209) is provided between the second check valve insertion hole (204) and the third check valve insertion hole (205). A first channel (207) is provided between the first check valve insertion hole (203) and the fourth check valve insertion hole (206). A tenth channel is provided between the third check valve insertion hole (205) and the fourth check valve insertion hole (206). Three-channel (220); a set of opposing side end faces of the oil guide valve body (2): a first side end face (231) and a second side end face (232), a first pipeline connection port (201) is provided on the first side end face (231), a second pipeline connection port (202) is provided on the second side end face (232), the second pipeline connection port (202) is opposite to the first pipeline connection port (201), a seventh channel (213) is also provided on the first side end face (231), and an eighth channel (214) is also provided on the second side end face (232); the oil guide valve body (2) Another set of opposite side faces: third side face (233), fourth side face (234), the third side face (233) has a pressure switch insertion hole (218) at the center, the pressure switch insertion hole (218) has a twelfth channel (219) above it, a fifth channel (211) below it, and a fourth channel (210) and a sixth channel (212) on both sides; the fourth side face (234) has a ninth channel (215) at the center, and a tenth channel (216) and an eleventh channel (217) on both sides below the ninth channel (215).

3. A high-pressure bidirectional pipeline filter according to claim 2, characterized in that: The sixth channel (212) penetrates the middle of the fourth check valve insert hole (206) and communicates with the middle of the first channel (207); the eleventh channel (217) communicates with the bottom of the first channel (207) and the first check valve insert hole (203); the ninth channel (215) communicates with the middle of the second channel (208); the second working port (226) communicates with the bottom of the second channel (208); the fifth channel (211) communicates with the first working port (225); the fourth channel (210) penetrates the middle of the third check valve insert hole (205) and communicates with the middle of the first channel (207). The third channel (209) is connected to the middle position; the tenth channel (216) is connected to the bottom position of the second check valve insertion hole (204) and the third channel (209); the seventh channel (213) is connected to the bottom position of the third check valve insertion hole (205) and the fourth check valve insertion hole (206); the first pipeline connection port (201) is connected to the first channel (207); the second pipeline connection port (202) is connected to the third channel (209); the eighth channel (214) passes through the middle of the second check valve insertion hole (204) and is connected to the middle of the first check valve insertion hole (203).

4. A high-pressure bidirectional pipeline filter according to claim 3, characterized in that: The pressure switch insertion hole (218) has a seventeenth channel (235) at the bottom, a twelfth channel (219) that is connected to the upper part of the second channel (208), a thirteenth channel (220) that passes through the twelfth channel (219) and is connected to the pressure switch insertion hole (218), and a sixteenth channel (227) that passes through the fifth channel (211) and is connected to the seventeenth channel (235).

5. A high-pressure bidirectional pipeline filter according to claim 2, characterized in that: The first one-way valve insertion hole (203), the fourth one-way valve insertion hole (206), the second one-way valve insertion hole (204), and the third one-way valve insertion hole (205) are provided with fastening screw holes (221) on their walls.

6. A high-pressure bidirectional pipeline filter according to claim 2, characterized in that: The mounting hole provided in the mounting boss (224) is also provided with a bypass valve mounting hole (228) at the bottom, and the bypass valve mounting hole (228) is connected to the fifth channel (211).

7. A high-pressure bidirectional pipeline filter according to claim 2, characterized in that: The first pipe connection port (201) is provided with a second mounting hole (223) around its perimeter, and the second pipe connection port (202) is provided with a fourth mounting hole (230) around its perimeter.

8. A high-pressure bidirectional pipeline filter according to claim 2, characterized in that: The oil guide valve body (2) has a first mounting hole (222) at the four corners of the top end face and a third mounting hole (229) at the four corners of the bottom end face.

Images