High-pressure sealing structure of hydraulic filter

Abstract

The high-pressure sealing structure of the hydraulic filter comprises a rear installation frame and a flow outlet, two sets of inner fixing holes used for being fixed with an external fixing piece through bolts are formed in the left side of the rear installation frame, and the upper end and the lower end of the right side of the rear installation frame are each provided with a set of clamping rings used for clamping a high-pressure filtering tank. The two groups of clamping rings are arranged on the rear mounting frame, the two groups of clamping rings and the rear mounting frame are of an integrated structure, the cross section of each clamping ring is of a three-quarter circle structure when the clamping rings are overlooked, and a group of high-pressure filtering tanks used for filtering high-pressure liquid are arranged on the inner sides of the two groups of clamping rings. High-pressure liquid is uniformly guided in through the branch guide ports, the high-pressure liquid is filtered through the inner filter pipes, and the upper connecting rotary seat and the lower connecting rotary seat are convenient for workers to disassemble and take out a plurality of groups of inner filter pipes for replacement.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-pressure filtration, and relates to a high-pressure sealing structure of a hydraulic filter. Background Art

[0002] A hydraulic filter is a crucial component in a hydraulic system. Its main function is to filter and remove impurities in the oil fluid to ensure the normal operation of the hydraulic system and extend the service life of the equipment. When the oil fluid flows through the filter, the design of its high-pressure sealing structure ensures the cleanliness of the hydraulic oil and the stable operation of the system. However, when the filter element becomes blocked, if the hydraulic filter cannot be quickly disassembled, a series of serious problems will occur. The blockage of the filter element will cause the working pressure of the hydraulic system to increase. In the prior art, it is difficult to disassemble the high-sealing hydraulic filter when the filter element needs to be replaced, and the single filter element shortens the blockage cycle of the filter element, which also means that the high-sealing hydraulic filter needs to be disassembled frequently. At the same time, as the filter element gradually becomes blocked, the flow resistance of the hydraulic oil increases, and the system needs a greater pressure to push the hydraulic oil to flow. This will not only increase the load on the hydraulic pump but also may cause an overload phenomenon, damaging the system. Therefore, there is an urgent need for a high-pressure sealing structure of a hydraulic filter to solve the above problems. Summary of the Utility Model

[0003] Aiming at the deficiencies existing in the prior art, the purpose of the utility model is to provide a high-pressure sealing structure of a hydraulic filter to solve the problems mentioned in the above background art.

[0004] The utility model is realized through the following technical solutions: A high-pressure sealing structure of a hydraulic filter, comprising: a rear mounting frame and an outlet. Two inner fixing holes for fixing with external fixing parts by bolts are arranged inside the left side of the rear mounting frame. At both the upper and lower ends on the right side of the rear mounting frame, a clamping ring for clamping a high-pressure filter tank is arranged.

[0005] Both of the two clamping rings are of an integral structure with the rear mounting frame. The cross-section of the clamping ring in a top view is a three-quarter circle structure. Inside the two clamping rings, a high-pressure filter tank for filtering high-pressure liquid is arranged. The inside of the high-pressure filter tank includes a diversion port and a lower filter plate.

[0006] A upper tank threadedly connected to the inner tank is arranged outside the diversion port. A lower end of the upper tank is provided with an inner tank for filtering high-pressure liquid. A lower end of the inner tank is provided with a lower tank threadedly connected to the inner tank. A drainage pipe for discharging high-pressure liquid is arranged at the lower end of the lower tank, and the high-pressure liquid can be filtered by using the high-pressure filter tank.

[0007] As a preferred embodiment, a group of fixing seats for fitting and fixing the inner side of the high-pressure filter tank are provided on the outer side of the lower tank, and five groups of branch guide ports for introducing high-pressure liquid are provided on the upper end of the inner tank body. The five groups of branch guide ports are distributed in an annular structure, and the five groups of branch guide ports have the same specifications, so that the high-pressure liquid can be evenly introduced by using the branch guide ports.

[0008] As a preferred embodiment, a group of inner filter tubes for filtering high-pressure liquid is provided at the lower end of each group of branch outlets, columnar filter cotton is provided inside the inner filter tubes, and several groups of inner filter holes for discharging the filtered high-pressure liquid are evenly distributed on the outside of the inner filter tubes, so that the high-pressure liquid can be filtered by using the inner filter tubes.

[0009] As a preferred embodiment, a group of lower filter plates are provided at the lower ends of the five groups of inner filter tubes for allowing the filtered high-pressure liquid to seep downward, and the lower filter plates are installed on the inner side of the upper end of the lower tank. The upper tank and the lower tank are respectively connected to the upper and lower sides of the inner tank body by threads.

[0010] As a preferred embodiment, the upper end of the high-pressure filter tank is provided with a group of upper connecting rotary seats for introducing external high-pressure liquid, a group of flow inlets are provided in the middle position of the upper end of the upper connecting rotary seats, a group of flow inlet pipes are provided inside the flow inlets, and the lower ends of the flow inlet pipes are sealed and connected to the inside of the guide port.

[0011] As a preferred embodiment, a group of lower connecting rotary seats for guiding the filtered high-pressure liquid out are provided at the lower end of the high-pressure filter tank. The lower connecting rotary seats have the same specifications as the upper connecting rotary seats and are symmetrically arranged in the middle position of the high-pressure filter tank. The upper connecting rotary seats and the lower connecting rotary seats are respectively connected to the upper and lower sides of the high-pressure filter tank through threaded sealing. By using the upper connecting rotary seats and the lower connecting rotary seats, it is convenient for staff to disassemble and take out several groups of inner filter tubes for replacement.

[0012] As a preferred embodiment, the upper connecting rotary seat, the lower connecting rotary seat and the high-pressure filter tank are all made of aluminum alloy material, the lower tank is fitted with the inner side of the lower connecting rotary seat, and the drainage pipe passes through the inside of the outlet and is sealed and connected to the external high-pressure liquid recovery pipe.

[0013] After adopting the above technical scheme, the beneficial effects of the utility model are: by using the high-pressure filter tank to filter the high-pressure liquid, by using the branch port to evenly introduce the high-pressure liquid, by using the inner filter tube to filter the high-pressure liquid, by using the upper connecting rotary seat and the lower connecting rotary seat, it is convenient for the staff to disassemble and take out several groups of inner filter tubes for replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a front view structural schematic diagram of a high-pressure sealing structure of a hydraulic filter of the present invention;

[0016] Figure 2 It is a front view structural schematic diagram of the inner tank body in a high-pressure sealing structure of a hydraulic filter of the present invention;

[0017] Figure 3 It is a front-side top view structural schematic diagram of the distribution of five-component guide ports in a high-pressure sealing structure of a hydraulic filter of the present invention;

[0018] Figure 4 It is a front-side top view structural schematic diagram of five groups of inner filter pipes in a high-pressure sealing structure of a hydraulic filter of the present invention;

[0019] In the figure: 100 - rear mounting frame, 110 - clamping ring, 120 - high-pressure filter tank, 130 - upper connecting swivel base, 140 - inlet, 150 - lower connecting swivel base, 160 - outlet;

[0020] 12a - diversion port, 12b - upper tank, 12c - inner tank body, 12d - fixing seat, 12e - drainage pipe, 12f - sub-guide port, 12g - inner filter pipe, 12h - inner filter hole, 12i - lower filter plate. Detailed implementation manners

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0022] Please refer to Figures 1 - 4 , a high-pressure sealing structure of a hydraulic filter, including: a rear mounting frame 100, a high-pressure filter tank 120, and an outlet 160. There are two inner fixing holes for fixing with external fixing parts by bolts inside the left side of the rear mounting frame 100, and a clamping ring 110 for clamping the high-pressure filter tank 120 is provided at both the upper and lower ends on the right side of the rear mounting frame 100;

[0023] The two sets of clamp rings 110 are integrated with the rear mounting frame 100. The cross section of the clamp ring 110 is a three-quarter circle structure when viewed from above. A set of high-pressure filter tanks 120 for filtering high-pressure liquid are arranged inside the two sets of clamp rings 110. The high-pressure filter tanks 120 include a guide port 12a and a lower filter plate 12i.

[0024] An upper tank 12b threadedly connected to the inner tank body 12c is provided on the outside of the guide port 12a, an inner tank body 12c for filtering the high-pressure liquid is provided at the lower end of the upper tank 12b, a lower tank threadedly connected to the inner tank body 12c is provided at the lower end of the inner tank body 12c, and a drainage pipe 12e for discharging the high-pressure liquid is provided at the lower end of the lower tank, so that the high-pressure liquid can be filtered by using the high-pressure filter tank 120.

[0025] A group of fixing seats 12d are provided on the outside of the lower tank for fitting and fixing the inner side of the high-pressure filter tank 120. Five groups of branch guide ports 12f are provided on the upper end of the inner tank body 12c for introducing high-pressure liquid. The five groups of guide ports 12f are distributed in a ring structure, and the five groups of guide ports 12f have the same specifications. The high-pressure liquid can be evenly introduced by using the branch guide ports 12f.

[0026] A group of lower filter plates 12i are provided at the lower ends of the five groups of inner filter tubes 12g for allowing the filtered high-pressure liquid to seep downward. The lower filter plates 12i are installed on the inner side of the upper end of the lower tank. The upper tank 12b and the lower tank are respectively connected to the upper and lower sides of the inner tank body 12c through threads.

[0027] A group of upper connecting rotary seats 130 for introducing external high-pressure liquid is provided at the upper end of the high-pressure filter tank 120, a group of inlet ports 140 are provided in the middle position of the upper end of the upper connecting rotary seat 130, a group of inlet pipes are provided inside the inlet ports 140, and the lower ends of the inlet pipes are sealed and connected to the inside of the guide port 12a.

[0028] A group of lower connecting rotary seats 150 for guiding the filtered high-pressure liquid is provided at the lower end of the high-pressure filter tank 120. The lower connecting rotary seats 150 have the same specifications as the upper connecting rotary seats 130 and are symmetrically arranged in the middle position of the high-pressure filter tank 120. The upper connecting rotary seats 130 and the lower connecting rotary seats 150 are respectively connected to the upper and lower sides of the high-pressure filter tank 120 through threaded sealing. By using the upper connecting rotary seats 130 and the lower connecting rotary seats 150, it is convenient for staff to disassemble and take out several groups of inner filter tubes 12g for replacement.

[0029] The upper connecting rotary seat 130, the lower connecting rotary seat 150 and the high-pressure filter tank 120 are all made of aluminum alloy material. The lower tank fits the inner side of the lower connecting rotary seat 150, and the drainage pipe 12e passes through the outlet 160 and is sealed and connected to the external high-pressure liquid recovery pipe.

[0030] See also Figures 1 - 4, as the first embodiment of the present utility model: When the staff needs to replace the filter element, first stop the use of the hydraulic filter, and then take out the high-pressure filter tank 120 from the inside of the two sets of clamping rings 110. Since the upper connecting swivel base 130 and the lower connecting swivel base 150 are respectively threadedly and hermetically connected to the upper and lower sides of the high-pressure filter tank 120, and the upper tank 12b and the lower tank are respectively threadedly connected to the upper and lower sides of the inner tank body 12c, after the staff rotates and takes out the upper connecting swivel base 130 and the lower connecting swivel base 150, the five sets of inner filter pipes 12g inside the inner tank body 12c can be taken out and replaced. Subsequently, the staff needs to reapply and even out the sealant at the threaded connections between the upper tank 12b and the inner tank body 12c, and between the upper connecting swivel base 130 and the high-pressure filter tank 120, and then rotate and screw them on to quickly complete the replacement work of the inner filter pipes 12g.

[0031] Please refer to Figures 1 - 4 , as the second embodiment of the present utility model: Based on the description in the above embodiment, further, since there are five sets of diversion ports 12f for introducing high-pressure liquid provided at the upper end of the inner tank body 12c, the five sets of diversion ports 12f are distributed in an annular structure, and there is a set of inner filter pipes 12g for filtering the high-pressure liquid provided at the lower end of each set of diversion ports 12f. Columnar filter cotton is provided inside the inner filter pipes 12g, and a number of inner filter holes 12h for discharging the filtered high-pressure liquid are evenly distributed on the outer side of the inner filter pipes 12g. The high-pressure liquid can be filtered by using the inner filter pipes 12g. When the high-pressure liquid evenly passes through the five sets of diversion ports 12f, the annularly distributed inner filter pipes 12g reduce the accumulation of high-pressure liquid impurities compared with a single filter element, thereby prolonging the replacement cycle of the filter element and effectively reducing the frequency of equipment disassembly.

[0032] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A hydraulic filter high pressure sealing structure, comprising: A rear mounting frame (100), a high-pressure filter tank (120), and an outlet (160), characterized in that: the left side of the rear mounting frame (100) is internally provided with two groups of internal fixing holes for fixing with external fixing members by means of bolts, and the right side of the rear mounting frame (100) is provided with a group of clamping rings (110) for clamping the high-pressure filter tank (120) at both upper and lower ends; The two groups of clamp rings (110) are integrally structured with the rear mounting frame (100); the cross-section of the clamp rings (110) in a plan view is a three-quarter circular structure; a group of high-pressure filter tanks (120) for filtering high-pressure liquid are provided inside the two groups of clamp rings (110); the high-pressure filter tanks (120) include a guide port (12a) and a lower filter plate (12i); An upper tank (12b) threadedly connected to the inner tank body (12c) is provided on the outside of the guide port (12a); an inner tank body (12c) for filtering high-pressure liquid is provided at the lower end of the upper tank (12b); a lower tank threadedly connected to the inner tank body (12c) is provided at the lower end of the inner tank body (12c); a drainage pipe (12e) for discharging the high-pressure liquid is provided at the lower end of the lower tank.

2. A hydraulic filter high pressure sealing structure according to claim 1, characterized in that: The outer side of the lower tank is provided with a group of fixing seats (12d) for fitting and fixing the inner side of the high-pressure filter tank (120), and the upper end of the inner tank body (12c) is provided with five groups of branch guide ports (12f) for introducing high-pressure liquid, the five groups of branch guide ports (12f) are distributed in a ring structure, and the five groups of branch guide ports (12f) have the same specifications.

3. A hydraulic filter high pressure sealing structure according to claim 2, characterized in that: A group of inner filter tubes (12g) for filtering high-pressure liquid is provided at the lower end of each group of branch outlets (12f), columnar filter cotton is provided inside the inner filter tubes (12g), and a plurality of groups of inner filter holes (12h) for discharging filtered high-pressure liquid are evenly distributed on the outside of the inner filter tubes (12g).

4. A hydraulic filter high pressure sealing structure according to claim 3, characterized in that: A group of lower filter plates (12i) for allowing filtered high-pressure liquid to seep downward are provided at the lower ends of the five groups of inner filter tubes (12g); the lower filter plates (12i) are installed on the inner side of the upper end of the lower tank; the upper tank (12b) and the lower tank are respectively connected to the upper and lower sides of the inner tank body (12c) by screw thread engagement.

5. A hydraulic filter high pressure sealing structure according to claim 2, characterized in that: The upper end of the high-pressure filter tank (120) is provided with a group of upper connecting rotary seats (130) for introducing external high-pressure liquid, and the middle position of the upper end of the upper connecting rotary seat (130) is provided with a group of inlet ports (140), and the interior of the inlet ports (140) is provided with a group of inlet pipes, and the lower ends of the inlet pipes are sealedly connected to the interior of the guide port (12a).

6. A hydraulic filter high pressure sealing structure according to claim 5, characterized in that: A group of lower connecting rotary seats (150) for guiding filtered high-pressure liquid is provided at the lower end of the high-pressure filter tank (120); the lower connecting rotary seats (150) have the same specifications as the upper connecting rotary seats (130) and are symmetrically arranged at the middle position of the high-pressure filter tank (120); the upper connecting rotary seats (130) and the lower connecting rotary seats (150) are respectively connected to the upper and lower sides of the high-pressure filter tank (120) in a sealing manner by screw thread engagement.

7. A hydraulic filter high pressure sealing structure according to claim 6, characterized in that: The upper connecting rotary seat (130), the lower connecting rotary seat (150) and the high-pressure filter tank (120) are all made of aluminum alloy material; the lower tank fits the inner side of the lower connecting rotary seat (150); the drainage pipe (12e) passes through the inside of the outlet (160) and is sealed and connected to an external high-pressure liquid recovery pipe.

Images