Hydraulic control one-way valve with filter screen replacement structure

Abstract

The utility model relates to the technical field of hydraulic control one-way valves, and discloses a hydraulic control one-way valve with a filter screen replacing structure, which comprises a hydraulic control one-way valve main body, a connecting port is fixedly connected outside the hydraulic control one-way valve main body, and a sealing limiting mechanism is arranged at the top of the hydraulic control one-way valve main body. An auxiliary filtering mechanism is arranged in the hydraulic control one-way valve body, in the using process, through rotation of an arranged worm and cooperation of the worm gear, it is convenient to achieve uniform abutting connection of a sealing ring till the sealing ring makes contact with a threaded connection pipe, and the sealing effect is improved; according to the hydraulic control one-way valve, the threaded connection pipe is conveniently limited, so that the situation that the threaded connection pipe and the hydraulic control one-way valve body are loosened in the using process is avoided, the service life is prolonged, limiting installation of the filter screen is conveniently achieved through movement of the sliding rod and cooperation of the spring, and workers can conveniently conduct the follow-up installation and disassembly process.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic check valves, and particularly relates to a hydraulic check valve with a filter screen replacement structure. Background Technique

[0002] The hydraulic check valve is a commonly used fluid control element, and its main function is to control the flow direction of the fluid in the pipeline. Currently, the hydraulic check valve has been widely used in hydraulic machinery, petrochemical industry, chemical fertilizer, metallurgy, mining, machinery and construction and other fields.

[0003] According to a hydraulic check valve disclosed on the patent network (the authorized announcement number is: CN 221300505 U), it is described that "the utility model relates to the technical field of hydraulic check valves, specifically a hydraulic check valve, including a hydraulic check valve body. The upper end surface of the hydraulic check valve body is respectively provided with an oil inlet and an oil outlet. The inside of the oil inlet is threadedly connected with a first threaded connection pipe, and the outer surface of the first threaded connection pipe is wound with raw material tape. By using the corrosion resistance and sealing performance of the raw material tape, the sealing performance of the hydraulic check valve can be improved. At the same time, by rotating the movable turning plate, the extrusion block squeezes and limits the rubber sealing ring, and the rubber sealing ring seals the hydraulic check valve, thereby improving the sealing performance of the hydraulic check valve. By using the elastic force of the connecting spring, the support plate clamps and fixes the filtering circular plate, so that the filtering circular plate can filter the oil in the oil inlet, extend the service life of the hydraulic check valve, and at the same time, the gasket on the filtering circular plate can also play a sealing role".

[0004] Regarding the above description content, the applicant believes that there are the following problems:

[0005] During the use of this utility model, by winding the raw material tape around the threaded part of the first threaded connection pipe, then sleeving the rubber sealing ring onto the outer surface of the first threaded connection pipe, and then threadedly installing the first threaded connection pipe onto the hydraulic check valve body. In the actual use process, when the device presses the sealing ring, only the extrusion block contacts the sealing ring, which is prone to uneven extrusion force and oil leakage. At the same time, the connecting pipe of the device is connected by threads, and it is prone to looseness and other situations during long-term use, increasing the risk of oil leakage. Therefore, it is necessary to improve a hydraulic check valve with a filter screen replacement structure to solve the above problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide a hydraulic check valve with a filter screen replacement structure to solve the problems raised in the above background technique.

[0007] To achieve the above object, the present utility model provides the following technical solutions: A hydraulic check valve with a filter screen replacement structure, including a hydraulic check valve main body, an interface is fixedly connected to the outside of the hydraulic check valve main body, a sealing and limiting mechanism is arranged on the top of the hydraulic check valve main body, and an auxiliary filtering mechanism is arranged inside the hydraulic check valve main body;

[0008] The sealing and limiting mechanism includes a sealing component and a limiting component. The sealing component is arranged on the top of the hydraulic check valve main body, and the limiting component is arranged on the top of the hydraulic check valve main body.

[0009] Preferably, the sealing component includes a connecting frame fixedly connected to the top of the hydraulic check valve main body. A worm is rotatably connected inside the connecting frame, a gear column is rotatably connected inside the connecting frame, a worm gear is fixedly connected to the outside of the gear column, a base is fixedly connected to the top of the hydraulic check valve main body, a clamping plate is slidably connected inside the base, a cover plate is rotatably connected to the outside of the base, and a sealing ring is arranged inside the hydraulic check valve main body, which is convenient for uniformly abutting against the sealing ring until it contacts the threaded connecting pipe, increasing the sealing effect.

[0010] Preferably, the clamping plate contacts the sealing ring, the worm meshes with the worm gear, the gear column meshes with the cover plate, and grooves are formed at the corresponding positions of the cover plate and the clamping plate, and the cover plate contacts the clamping plate, which is convenient for a more stable sealing process.

[0011] Preferably, the limiting component includes a connecting platform fixedly connected to the top of the hydraulic check valve main body. A bidirectional threaded rod is rotatably connected inside the connecting platform, a limiting rod is fixedly connected inside the connecting platform, a movable block is slidably connected to the outside of the limiting rod, and a clamping block is fixedly connected to the outside of the movable block, which is convenient for limiting the threaded connecting pipe, thereby avoiding loosening between the threaded connecting pipe and the hydraulic check valve main body during use and increasing the service life.

[0012] Preferably, the movable block is threadedly connected to the bidirectional threaded rod, and grooves are formed at the corresponding positions of the connecting platform and the movable block, and the movable block is slidably connected inside the grooves, which is convenient for a more stable limiting process.

[0013] Preferably, the auxiliary filtering mechanism includes a threaded connecting pipe threadedly connected inside the hydraulic check valve main body. A filter screen is arranged inside the threaded connecting pipe, a connecting box is fixedly connected to the outside of the threaded connecting pipe, a spring is fixedly connected inside the connecting box, a pressing block is fixedly connected to the end of the spring away from the connecting box, and a sliding rod is fixedly connected to the end of the pressing block close to the spring, which is convenient for limiting and installing the filter screen and facilitating the subsequent installation and disassembly process for the staff.

[0014] Preferably, a groove is provided at the corresponding position of the connection box and the pressing block, and the pressing block is slidably connected inside the groove. The sliding rod is slidably connected to the connection box, the pressing block is slidably connected to the threaded connection pipe, the pressing block is in contact with the filter screen, the sealing ring is in contact with the threaded connection pipe, and the clamping block is in contact with the threaded connection pipe, facilitating a more stable use process.

[0015] Compared with the prior art, the present utility model provides a hydraulic check valve with a filter screen replacement structure, having the following beneficial effects:

[0016] For the hydraulic check valve with a filter screen replacement structure, through the provided sealing and limiting mechanism, during use, by rotating the provided worm and cooperating with the worm gear, it is convenient to uniformly abut the sealing ring until it contacts the threaded connection pipe, increasing the sealing effect. By rotating the provided bidirectional threaded rod and cooperating with the limiting rod, it is convenient to limit the threaded connection pipe, thereby preventing loosening between the threaded connection pipe and the main body of the hydraulic check valve during use and increasing the service life.

[0017] For the hydraulic check valve with a filter screen replacement structure, through the provided auxiliary filtering mechanism, during use, by the movement of the provided sliding rod and cooperating with the spring, it is convenient to limit and install the filter screen, facilitating the subsequent installation and disassembly process for the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings:

[0019] Figure 1 It is a front view structural diagram of the present utility model;

[0020] Figure 2 It is a structural diagram of the sealing component of the present utility model;

[0021] Figure 3 It is an internal structural diagram of the sealing component of the present utility model;

[0022] Figure 4 It is a structural diagram of the limiting component of the present utility model;

[0023] Figure 5 It is an internal structural diagram of the limiting component of the present utility model;

[0024] Figure 6 It is a structural diagram of the auxiliary filtering mechanism of the present utility model;

[0025] Figure 7 This is a schematic diagram of the internal structure of the auxiliary filtering mechanism of the present utility model.

[0026] In the figure: 1. Main body of the hydraulic control check valve; 2. Connection port; 3. Sealing and limiting mechanism; 31. Sealing component; 311. Connection frame; 312. Worm; 313. Sealing ring; 314. Cover plate; 315. Clamping plate; 316. Gear column; 317. Worm gear; 318. Base; 32. Limiting component; 321. Connection platform; 322. Bidirectional threaded rod; 323. Clamping block; 324. Limiting rod; 325. Movable block; 4. Auxiliary filtering mechanism; 41. Threaded connecting pipe; 42. Filter net; 43. Connection box; 44. Slide bar; 45. Spring; 46. Pressing block. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] In the present utility model, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0029] Embodiment 1: Please refer to Figures 1-5 , the present utility model provides a technical solution: a hydraulic control check valve with a filter screen replacement structure, including a main body 1 of the hydraulic control check valve, a connection port 2 fixedly connected to the outside of the main body 1 of the hydraulic control check valve, a sealing and limiting mechanism 3 arranged on the top of the main body 1 of the hydraulic control check valve, and an auxiliary filtering mechanism 4 arranged inside the main body 1 of the hydraulic control check valve;

[0030] The sealing and limiting mechanism 3 includes a sealing component 31 and a limiting component 32. The sealing component 31 is arranged on the top of the main body 1 of the hydraulic control check valve, and the limiting component 32 is arranged on the top of the main body 1 of the hydraulic control check valve.

[0031] Further, the sealing assembly 31 includes a connecting frame 311, the connecting frame 311 is fixedly connected to the top of the pilot-operated check valve body 1, a worm 312 is rotatably connected inside the connecting frame 311, a gear column 316 is rotatably connected inside the connecting frame 311, a worm gear 317 is fixedly connected to the outside of the gear column 316, a base 318 is fixedly connected to the top of the pilot-operated check valve body 1, a clamping plate 315 is slidably connected inside the base 318, a cover plate 314 is rotatably connected to the outside of the base 318, and a sealing ring 313 is arranged inside the pilot-operated check valve body 1, which is convenient for uniformly abutting against the sealing ring 313 until it contacts the threaded connecting pipe 41, thereby increasing the sealing effect.

[0032] Further, the clamping plate 315 contacts the sealing ring 313, the worm 312 meshes with the worm gear 317, the gear column 316 meshes with the cover plate 314, grooves are formed at the corresponding positions of the cover plate 314 and the clamping plate 315, and the cover plate 314 contacts the clamping plate 315, which is convenient for the sealing process to be more stable.

[0033] Further, the limiting assembly 32 includes a connecting platform 321, the connecting platform 321 is fixedly connected to the top of the pilot-operated check valve body 1, a bidirectional threaded rod 322 is rotatably connected inside the connecting platform 321, a limiting rod 324 is fixedly connected inside the connecting platform 321, a movable block 325 is slidably connected to the outside of the limiting rod 324, and a clamping block 323 is fixedly connected to the outside of the movable block 325, which is convenient for limiting the threaded connecting pipe 41, thereby avoiding loosening between the threaded connecting pipe 41 and the pilot-operated check valve body 1 during use and increasing the service life.

[0034] Further, the movable block 325 is threadedly connected to the bidirectional threaded rod 322, grooves are formed at the corresponding positions of the connecting platform 321 and the movable block 325, and the movable block 325 is slidably connected inside the grooves, which is convenient for the limiting process to be more stable.

[0035] Embodiment 2: Please refer to Figures 6-7 and, in combination with Embodiment 1, it is further obtained that the auxiliary filtering mechanism 4 includes a threaded connecting pipe 41, the threaded connecting pipe 41 is threadedly connected inside the pilot-operated check valve body 1, a filter screen 42 is arranged inside the threaded connecting pipe 41, a connecting box 43 is fixedly connected to the outside of the threaded connecting pipe 41, a spring 45 is fixedly connected inside the connecting box 43, a pressing block 46 is fixedly connected to one end of the spring 45 away from the connecting box 43, and a sliding rod 44 is fixedly connected to one end of the pressing block 46 close to the spring 45, which is convenient for limiting and installing the filter screen 42 and facilitating the subsequent installation and disassembly process for the staff.

[0036] Furthermore, a groove is provided at the corresponding position of the connection box 43 and the pressing block 46, and the pressing block 46 is slidably connected inside the groove. The sliding rod 44 is slidably connected to the connection box 43, the pressing block 46 is slidably connected to the threaded connection pipe 41, the pressing block 46 contacts the filter screen 42, the sealing ring 313 contacts the threaded connection pipe 41, and the clamping block 323 contacts the threaded connection pipe 41, which facilitates a more stable use process.

[0037] During the actual operation process, when this device is used, first, the operator rotates the threaded connection pipe 41 to connect and limit the threaded connection pipe 41 with the main body 1 of the hydraulic control check valve. The operator pulls the sliding rod 44. Through the movement of the set sliding rod 44 and in cooperation with the spring 45, the pressing block 46 moves, thereby realizing the limit between the threaded connection pipe 41 and the filter screen 42. After the installation is completed, the operator rotates the worm 312. Through the rotation of the set worm 312 and in cooperation with the worm gear 317, the gear column 316 rotates, so that the cover plate 314 rotates outside the base 318, and thus the clamping plate 315 slides inside the base 318 until it contacts the sealing ring 313. After the sealing of the sealing ring 313 is completed, the operator rotates the bidirectional threaded rod 322. Through the rotation of the set bidirectional threaded rod 322 and in cooperation with the limit rod 324, the movable block 325 moves, so that the clamping block 323 moves until it contacts and limits the threaded connection pipe 41.

[0038] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

Claims

1. A hydraulically controlled one-way valve with a filter replacement structure, comprising a hydraulically controlled one-way valve body (1), characterized in that: The hydraulically controlled one-way valve body (1) is fixedly connected to a connection port (2) on the outside, a sealing limit mechanism (3) is provided on the top of the hydraulically controlled one-way valve body (1), and an auxiliary filtering mechanism (4) is provided inside the hydraulically controlled one-way valve body (1); The sealing and limiting mechanism (3) comprises a sealing component (31) and a limiting component (32); the sealing component (31) is arranged on the top of the hydraulically controlled one-way valve body (1); and the limiting component (32) is arranged on the top of the hydraulically controlled one-way valve body (1).

2. A hydraulically controlled one-way valve with a filter replacement structure according to claim 1, characterized in that: The sealing assembly (31) comprises a connecting frame (311), the connecting frame (311) being fixedly connected to the top of the hydraulically controlled one-way valve body (1), a worm (312) being rotatably connected inside the connecting frame (311), a gear column (316) being rotatably connected inside the connecting frame (311), a worm wheel (317) being fixedly connected outside the gear column (316), a base (318) being fixedly connected to the top of the hydraulically controlled one-way valve body (1), a clamping plate (315) being slidably connected inside the base (318), a cover plate (314) being rotatably connected outside the base (318), and a sealing ring (313) being arranged inside the hydraulically controlled one-way valve body (1).

3. A hydraulically controlled one-way valve with a filter replacement structure according to claim 2, characterized in that: The clamping plate (315) contacts the sealing ring (313), the worm (312) meshes with the worm wheel (317), the gear column (316) meshes with the cover plate (314), grooves are provided at corresponding positions of the cover plate (314) and the clamping plate (315), and the cover plate (314) and the clamping plate (315) are in contact.

4. A hydraulically controlled one-way valve with a filter replacement structure according to claim 2, characterized in that: The limit assembly (32) comprises a connecting platform (321), the connecting platform (321) being fixedly connected to the top of the hydraulically controlled one-way valve body (1), the connecting platform (321) being internally rotatably connected to a bidirectional threaded rod (322), the connecting platform (321) being internally fixedly connected to a limit rod (324), the limit rod (324) being externally slidably connected to a movable block (325), and the movable block (325) being externally fixedly connected to a clamping block (323).

5. A hydraulically controlled one-way valve with a filter replacement structure according to claim 4, characterized in that: The movable block (325) is threadedly connected to the bidirectional threaded rod (322); grooves are provided at corresponding positions of the connecting platform (321) and the movable block (325), and the movable block (325) is slidably connected inside the groove.

6. The hydraulically controlled one-way valve with a filter replacement structure according to claim 4, characterized in that: The auxiliary filtering mechanism (4) comprises a threaded connection pipe (41), the threaded connection pipe (41) being threadedly connected to the inside of the hydraulically controlled one-way valve body (1), a filter screen (42) being arranged inside the threaded connection pipe (41), a connection box (43) being fixedly connected to the outside of the threaded connection pipe (41), a spring (45) being fixedly connected to the inside of the connection box (43), a pressure block (46) being fixedly connected to one end of the spring (45) away from the connection box (43), and a sliding rod (44) being fixedly connected to one end of the pressure block (46) close to the spring (45).

7. A hydraulically controlled one-way valve with a filter replacement structure according to claim 6, characterized in that: Grooves are provided at corresponding positions of the connection box (43) and the pressing block (46), and the pressing block (46) is slidably connected inside the groove, the sliding rod (44) is slidably connected to the connection box (43), the pressing block (46) is slidably connected to the threaded connection pipe (41), the pressing block (46) is in contact with the filter screen (42), the sealing ring (313) is in contact with the threaded connection pipe (41), and the clamping block (323) is in contact with the threaded connection pipe (41).

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