Hydraulic pipe joint

Abstract

The invention provides a hydraulic pipe joint, and belongs to the technical field of pipe fittings. The hydraulic pipe joint solves the problems that an existing hydraulic pipe joint does not have a non-return function in the using process, and hydraulic oil backflow can cause pollution. The hydraulic pipe joint comprises a hydraulic pipe joint body, the hydraulic pipe joint body is composed of a first joint body and a second joint body, the first joint body is provided with a water inlet part used for being connected with a pipeline, the second joint body is provided with a water outlet part used for being connected with the pipeline, and a joint inner core is arranged in a water passing cavity. Water passing holes are formed in the upper end and the lower end of the connector inner core respectively, a filtering piece is fixedly arranged in the connector inner core and composed of a fixing base and a filtering sleeve, a water inlet hole used for water inflow is formed in the fixing base, a plug is arranged outside the filtering piece, and a non-return assembly is arranged at the water inlet portion of the second connector. The filter has the advantages of filtering and non-return functions and convenience in cleaning.

Description

Technical Field

[0001] The invention belongs to the technical field of pipe fittings and relates to a hydraulic pipe joint, in particular to a hydraulic pipe joint. Background Art

[0002] Hydraulic pipe joints are detachable connectors between oil pipes and oil pipes, and between oil pipes and hydraulic components. They can connect several different components to form a closed-loop hydraulic system. Since the pressure and impact force generated when the hydraulic oil flows through the connection are relatively strong, the requirements for the hydraulic pipe joints at the connection are also very high. On the one hand, the hydraulic pipe joint bears various pressures and impact forces at the connection of components, and on the other hand, it ensures smooth connection between various components. It is one of the particularly important components in mechanical equipment.

[0003] However, after the components connected to the hydraulic pipe joints have been used for a certain period of time, various impurities will flow with the hydraulic oil in the entire hydraulic system, causing pipe blockage and eventually leading to hydraulic system failure. In addition, the hydraulic pipe joints do not have a check function during use, and the reflux of hydraulic oil will cause pollution. Summary of the invention

[0004] The purpose of the present invention is to provide a hydraulic pipe joint which has filtering and non-return functions and is easy to clean in view of the above problems existing in the prior art.

[0005] The objective of the present invention can be achieved through the following technical solutions: a hydraulic pipe joint, comprising a hydraulic pipe joint body, characterized in that the hydraulic pipe joint body is composed of a first joint and a second joint, the first joint and the second joint have cavities therein, and the two form a water passage cavity for water passing, the first joint is provided with a water inlet for connecting a pipe, the second joint is provided with a water outlet for connecting a pipe, a joint inner core is provided in the water passage cavity, water passage holes are respectively provided at the upper and lower ends of the joint inner core, a filter is fixedly provided in the joint inner core, the filter is composed of a fixing seat and a filter sleeve, the fixing seat is provided with a water inlet hole for water inlet, a plug is provided outside the filter, and a check component with a check function is provided at the water inlet of the second joint.

[0006] In the above-mentioned hydraulic pipe joint, the check assembly includes a check plate, a sliding rod, a check piece 1, a check piece 2 and a reset spring. The check plate is fixedly arranged at the water outlet of the second joint. The check plate is provided with a plurality of water holes for passing water. The check piece 1 is arranged at the lower end of the check plate and is used for sealing the water outlet. The check piece 2 is arranged at the upper end of the check plate and is used for sealing the water holes on the check plate.

[0007] In the above-mentioned hydraulic pipe joint, the water hole arranged at the upper end of the joint inner core corresponds to the water inlet of the first joint, and the water hole arranged at the lower end of the joint inner core corresponds to the water outlet of the second joint.

[0008] In the above-mentioned hydraulic pipe joint, a clamping portion is provided on the first joint, and the clamping portion extends into the second joint. The first joint and the second joint are clamped with each other and can rotate separately.

[0009] In the above-mentioned hydraulic pipe joint, the hydraulic pipe joint body is arranged in a Z-shaped structure as a whole.

[0010] Compared with the prior art, the hydraulic pipe joint of the present invention divides the hydraulic pipe joint body into a first joint and a second joint, provides a filter inside the hydraulic pipe joint, and provides a check assembly at the water outlet of the second joint, so that the entire joint has filtering and double check functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the present invention.

[0012] Figure 2 It is a cross-sectional structural schematic diagram of the present invention.

[0013] Figure 3 It is a structural schematic diagram of the inner core of the joint in the present invention.

[0014] Figure 4 It is a schematic diagram of the structure of the filter element in the present invention.

[0015] In the figure, 1. hydraulic pipe joint body; 2. first joint; 3. second joint; 4. water inlet; 5. water outlet; 6. joint inner core; 7. filter element; 8. fixing seat; 9. filter sleeve; 10. plug; 11. check assembly; 12. check plate; 13. sliding rod; 14. check element 1; 15. check element 2; 16. reset spring; 17. clamping part; 18. water hole. DETAILED DESCRIPTION

[0016] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0017] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the rotary hydraulic pipe joint includes a hydraulic pipe joint body 1, which is composed of a first joint 2 and a second joint 3. The first joint 2 and the second joint 3 have cavities therein, and the two form a water passage cavity for water passing through. The first joint 2 is provided with a water inlet portion 4 for connecting a pipe, and the second joint 3 is provided with a water outlet portion 5 for connecting a pipe. A joint inner core 6 is provided in the water passage cavity, and water passage holes 18 are respectively provided at the upper and lower ends of the joint inner core 6. A filter element 7 is fixedly provided in the joint inner core 6, and the filter element 7 is composed of a fixing seat 8 and a filter sleeve 9. The fixing seat 8 is provided with a water inlet hole for water inlet, and a plug 10 is provided outside the filter element 7. A check component 11 with a check function is provided at the water inlet portion 4 of the second joint 3.

[0018] To further explain, the check assembly 11 includes a check plate 12, a sliding rod 13, a check piece 14, a check piece 2 15 and a reset spring 16. The check plate 12 is fixedly arranged at the water outlet of the second joint 3. The check plate 12 is provided with a plurality of water holes 18 for passing water. The check piece 14 is arranged at the lower end of the check plate 12 and is used for closing the water outlet. The check piece 2 15 is arranged at the upper end of the check plate 12 and is used for closing the water holes 18 on the check plate 12.

[0019] To further elaborate, the liquid flows into the hydraulic pipe joint body 1 from the water inlet 4 of the first joint 2, and is filtered through the filter sleeve 9, and then flows out from the water outlet 5 of the second joint 3. Before the liquid circulates, the check piece 14 abuts against the water outlet 5 of the second joint 3, and the check piece 2 15 abuts against the upper end of the check plate 12. When the liquid circulates, the check piece 14 is subjected to pressure and moves upward, the sliding rod 13 slides on the check plate 12, the reset spring 16 is in a compressed state, and pushes the check piece 2 15 to move upward, and the water outlet 5 of the second joint 3 is in a flowing state. When the liquid stops flowing, the reset spring 16 rebounds, the check piece 14 abuts against the water outlet 5 of the second joint 3 again, and the check piece 2 15 abuts against the check plate 12, closing the water outlet 5 to prevent the liquid from stopping, and having a double check function.

[0020] To elaborate further, after long-term use, scale and other impurities will accumulate on the filter sleeve 9, and the filter sleeve 9 needs to be cleaned. There are two ways. One is to remove the filter element 7 as a whole from the hydraulic pipe joint body 1, and then clean the filter sleeve 9. The other is to let water into the filter sleeve 9 through the water inlet hole in the fixed seat 8, clean the scale and other impurities in the filter sleeve 9, and place them outside the filter sleeve 9, and the impurities flow out from the water hole 18 of the joint inner core 6.

[0021] In further detail, the water hole 18 disposed at the upper end of the joint inner core 6 corresponds to the water inlet 4 of the first joint 2 , and the water hole 18 disposed at the lower end of the joint inner core 6 corresponds to the water outlet 5 of the second joint 3 .

[0022] In further detail, a clamping portion 17 is provided on the first joint 2, and the clamping portion 17 extends into the second joint 3. The first joint 2 and the second joint 3 are clamped with each other and can be rotated at a certain angle respectively. The first joint 2 and the second joint 3 are both connected to the external connecting pipe. The rotatable setting of the joint can be used to connect pipes from different directions, which is convenient for users to use during work.

[0023] To further elaborate, the hydraulic pipe joint body 1 is arranged in a Z-shaped structure as a whole.

[0024] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0025] Although the terms such as hydraulic pipe joint body 1, first joint 2, second joint 3, water inlet 4, water outlet 5, joint inner core 6, filter 7, fixing seat 8, filter sleeve 9, plug 10, check assembly 11, check plate 12, sliding rod 13, check piece 14, check piece 2 15, reset spring 16, clamping part 17, water hole 18, etc. are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A hydraulic pipe joint, comprising a hydraulic pipe joint body (1), characterized in that: The hydraulic pipe joint body (1) is composed of a first joint (2) and a second joint (3), wherein the first joint (2) and the second joint (3) have cavities therein and the two joints form a water passage cavity for water to flow through. The first joint (2) is provided with a water inlet portion (4) for connecting to a pipeline, and the second joint (3) is provided with a water outlet portion (5) for connecting to a pipeline. A joint inner core (6) is provided in the water passage cavity, and water passage holes (18) are respectively provided at the upper and lower ends of the joint inner core (6). A filter element (7) is fixedly provided in the joint inner core (6), and the filter element (7) is composed of a fixing seat (8) and a filter sleeve (9). The fixing seat (8) is provided with a water inlet hole for water to flow through. A plug (10) is provided outside the filter element (7), and a non-return component (11) with a non-return function is provided at the water inlet portion (4) of the second joint (3).

2. A hydraulic pipe joint according to claim 1, characterized in that: The check assembly (11) comprises a check plate (12), a sliding rod (13), a check piece 1 (14), a check piece 2 (15) and a reset spring (16); the check plate (12) is fixedly arranged at the water outlet of the second joint (3); the check plate (12) is provided with a plurality of water holes (18) for passing water; the check piece 1 (14) is arranged at the lower end of the check plate (12) and is used for sealing the water outlet; the check piece 2 (15) is arranged at the upper end of the check plate (12) and is used for sealing the water holes (18) on the check plate (12).

3. A hydraulic pipe joint according to claim 1, characterized in that: The water hole (18) provided at the upper end of the joint inner core (6) corresponds to the water inlet (4) of the first joint (2), and the water hole (18) provided at the lower end of the joint inner core (6) corresponds to the water outlet (5) of the second joint (3).

4. A hydraulic pipe joint according to claim 1, characterized in that: The first joint (2) is provided with a clamping portion (17), and the clamping portion (17) extends into the second joint (3); the first joint (2) and the second joint (3) are clamped to each other and can rotate separately.

5. A hydraulic pipe joint according to claim 1, characterized in that: The hydraulic pipe joint body (1) is arranged in a Z-shaped structure as a whole.

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