Double-core one-way valve of hydraulic system

Abstract

The utility model relates to the technical field of hydraulic systems, in particular to a hydraulic system double-core one-way valve which comprises a valve body, a liquid inlet is formed in the end, close to the upper portion, of the valve body, a liquid outlet is formed in the end, close to the right side, of the valve body, and threaded holes are symmetrically formed in the positions, close to the left side and the right side, of the end, close to the lower portion, of the valve body. A sealing cover sleeves the end, close to the lower portion, of the valve body, the bottom of the inner wall of the sealing cover is tightly attached to the end, close to the lower portion, of the valve body, fixing bolts are symmetrically connected to the left end and the right end of the sealing cover in a threaded mode and are in threaded connection with threaded holes corresponding to the fixing bolts in position, and a sealing ring is fixedly bonded to the bottom of the inner wall of the sealing cover through glue. The outer side surface of the sealing ring is tightly attached to the inner wall side surface of the valve body; according to the double-core one-way valve of the hydraulic system, the sealing cover, the fixing bolt and the sealing ring are arranged, so that a maintainer can conveniently disassemble and replace the main valve core and the auxiliary valve core, and the working efficiency of the maintainer is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic systems, in particular to a double-core one-way valve for a hydraulic system. Background Art

[0002] A one-way valve is a valve that controls the direction of oil flow in a hydraulic system. Its main function is to control the flow of oil in one direction. When the oil flows in the opposite direction, the valve port must be well sealed and leak-free, and there should be no vibration, impact, or noise during operation. The structure and working principle of the one-way valve are relatively simple, but it is one of the most widely used components in hydraulic systems. Existing one-way valves are divided into two types: ball valve type and cone valve type. In terms of reverse sealing, the cone valve type has good guidance and reliable sealing, but its pressure loss is greater. Therefore, studying how to reduce the pressure loss of the cone valve type one-way valve plays an important role in the working efficiency of the hydraulic system. In addition, the existing one-way valve cannot be easily disassembled and replaced when the internal valve core is damaged, which makes the maintenance personnel's work efficiency low. In view of this, we propose a hydraulic system double-core one-way valve. Utility Model Content

[0003] The purpose of the utility model is to provide a double-core one-way valve for a hydraulic system to solve the problems raised in the above background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A double-core one-way valve for a hydraulic system includes a valve body, wherein the end of the valve body near the top is provided with a liquid inlet, the end of the valve body near the right is provided with a liquid outlet, the end of the valve body near the bottom and symmetrically provided with threaded holes near the left and right sides, the end of the valve body near the bottom is sleeved with a sealing cover, the bottom of the inner wall of the sealing cover is tightly fitted with the end of the valve body near the bottom, the left and right ends of the sealing cover are symmetrically threaded with fixing bolts, the fixing bolts are threadedly connected to the threaded holes corresponding to their positions, the bottom of the inner wall of the sealing cover is fixed with a sealing ring by glue, and the outer surface of the sealing ring is tightly fitted with the side surface of the inner wall of the valve body.

[0006] Preferably, a main valve core is provided above the sealing cover, the main valve core is slidably connected to the inner wall of the valve body, and a through hole is opened on the top of the main valve core.

[0007] Preferably, a liquid guide hole is provided at the right end of the main valve core, and the liquid guide hole is communicated with the through hole.

[0008] Preferably, a first housing is symmetrically provided below the main valve core near the left and right sides, and the first housing is fixedly connected to the bottom of the inner wall of the sealing cover by bolts.

[0009] Preferably, a first sliding block is slidably connected to the inner wall of the first shell, and a first connecting rod is fixedly connected to the top of the first sliding block by a bolt.

[0010] Preferably, the top end of the first connecting rod passes through the top of the first housing corresponding to its position and is fixedly connected to the bottom of the main valve core by bolts, and the bottom of the first sliding block is fixedly connected to the first spring.

[0011] Preferably, the inner wall of the through hole is slidably connected to a secondary valve core, the bottom of the secondary valve core is fixedly connected to a second outer shell by bolts, and the inner wall of the second outer shell is slidably connected to a second slider.

[0012] Preferably, the bottom of the second slider is fixedly connected to a second connecting rod by bolts, the bottom end of the second connecting rod passes through the bottom of the second shell and is fixedly connected to the bottom of the inner wall of the sealing cover by bolts, and the top of the second slider is fixedly connected to a second spring.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The hydraulic system double-core one-way valve is equipped with a sealing cover, fixing bolts and sealing ring, which allows maintenance personnel to easily disassemble and replace the main valve core and auxiliary valve core, thereby improving the work efficiency of maintenance personnel;

[0015] 2. The double-core one-way valve of the hydraulic system is provided with an auxiliary valve core so that when the pressure loss of the hydraulic oil is large, the auxiliary valve core is pushed open and the hydraulic oil flows out from the liquid guide hole, thereby reducing its pressure loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the valve body in the present utility model;

[0019] Figure 4 This is a structural diagram of the main valve core in the utility model;

[0020] The meaning of each title in the figure is:

[0021] 1. Valve body; 11. Liquid inlet; 12. Liquid outlet; 13. Threaded hole; 14. Sealing cover; 15. Fixing bolt; 16. Sealing ring;

[0022] 2. Main valve core; 21. Through hole; 22. Liquid guide hole; 23. First housing; 24. First slider; 25. First connecting rod; 26. First spring;

[0023] 3. Auxiliary valve core; 31. Second housing; 32. Second slider; 33. Second connecting rod; 34. Second spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figures 1-4 , the utility model provides a technical solution:

[0026] A double-core one-way valve for a hydraulic system includes a valve body 1. A liquid inlet 11 is provided at the upper end of the valve body 1 for introducing hydraulic oil. A liquid outlet 12 is provided at the right end of the valve body 1 for draining the hydraulic oil. Threaded holes 13 are symmetrically provided at the lower end of the valve body 1 and near the left and right sides.

[0027] As a preference of this embodiment, a sealing cover 14 is sleeved on the lower end of the valve body 1 , and the bottom of the inner wall of the sealing cover 14 fits tightly with the lower end of the valve body 1 to seal the lower end of the valve body 1 .

[0028] Specifically, the left and right ends of the sealing cover 14 are symmetrically threaded with fixing bolts 15 , and the fixing bolts 15 are threadedly connected to the threaded holes 13 corresponding to their positions to define the relative position between the sealing cover 14 and the valve body 1 .

[0029] It should be added that a sealing ring 16 is fixed to the bottom of the inner wall of the sealing cover 14 by glue, and the outer surface of the sealing ring 16 is tightly fitted with the side surface of the inner wall of the valve body 1 to play a sealing role.

[0030] Furthermore, a main valve core 2 is provided above the sealing cover 14, and the main valve core 2 is slidably connected to the inner wall of the valve body 1. A through hole 21 is opened on the top of the main valve core 2, and a liquid guide hole 22 is opened at the right end of the main valve core 2. The liquid guide hole 22 is connected to the through hole 21 and is used to drain the hydraulic oil in the through hole 21.

[0031] Specifically, a first housing 23 is symmetrically provided below the main valve core 2 near the left and right sides. The first housing 23 is fixedly connected to the bottom of the inner wall of the sealing cover 14 by bolts to limit the moving direction of the first slider 24.

[0032] Specifically, the inner wall of the first outer shell 23 is slidably connected to the first slider 24, and the top of the first slider 24 is fixedly connected to the first connecting rod 25 by bolts. The top of the first connecting rod 25 passes through the top of the first outer shell 23 corresponding to its position and is fixedly connected to the bottom of the main valve core 2 by bolts, so as to drive the first slider 24 to move.

[0033] Specifically, a first spring 26 is fixedly connected to the bottom of the first slider 24 to limit the position of the first slider 24 .

[0034] Furthermore, the inner wall of the through hole 21 is slidably connected to the auxiliary valve core 3, and the bottom of the auxiliary valve core 3 is fixedly connected to the second shell 31 by bolts for compressing the second spring 34. The inner wall of the second shell 31 is slidably connected to the second slider 32.

[0035] Specifically, the bottom of the second slider 32 is fixedly connected to the second connecting rod 33 by bolts. The bottom end of the second connecting rod 33 passes through the bottom of the second shell 31 and is fixedly connected to the bottom of the inner wall of the sealing cover 14 by bolts for installing the second slider 32.

[0036] Specifically, a second spring 34 is fixedly connected to the top of the second slider 32 to limit the position of the second housing 31 .

[0037] During specific use, when the main valve core 2 and the auxiliary valve core 3 need to be replaced, the user first rotates the two fixing bolts 15 to move them away from the sealing cover 14 until the two fixing bolts 15 are no longer threadedly connected to the two threaded holes 13, and then moves the sealing cover 14 downward, thereby driving the second connecting rod 33 and the two first housings 23 to move downward;

[0038] After the main valve core 2 and the auxiliary valve core are taken out from the valve body 1, the new main valve core 2 and the auxiliary valve core are inserted into the inner cavity of the valve body 1 until the bottom of the inner wall of the sealing cover 14 with the new main valve core 2 and the auxiliary valve core is tightly fitted with the end near the bottom of the valve body 1, and the two fixing bolts 15 corresponding to their positions are rotated until the two fixing bolts 15 are respectively threadedly connected with the two threaded holes 13. The main valve core 2 and the auxiliary valve core are replaced.

[0039] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-core one-way valve for a hydraulic system, comprising a valve body (1), characterized in that: The valve body (1) is provided with a liquid inlet (11) at the end near the top, and a liquid outlet (12) at the end near the right side. The valve body (1) is provided with threaded holes (13) symmetrically at the end near the bottom and near the left and right sides. The valve body (1) is provided with a sealing cover (14) at the end near the bottom. The bottom of the inner wall of the sealing cover (14) is tightly fitted with the end near the bottom of the valve body (1). The left and right ends of the sealing cover (14) are symmetrically threaded with fixing bolts (15). The fixing bolts (15) are threadedly connected to the threaded holes (13) corresponding to their positions. The bottom of the inner wall of the sealing cover (14) is fixed with a sealing ring (16) by glue. The outer surface of the sealing ring (16) is tightly fitted with the side surface of the inner wall of the valve body (1).

2. The hydraulic system dual-core one-way valve according to claim 1, characterized in that: A main valve core (2) is provided above the sealing cover (14), the main valve core (2) is slidably connected to the inner wall of the valve body (1), and a through hole (21) is provided on the top of the main valve core (2).

3. The hydraulic system dual-core one-way valve according to claim 2, characterized in that: A liquid guide hole (22) is provided at the right end of the main valve core (2), and the liquid guide hole (22) is communicated with the through hole (21).

4. The hydraulic system dual-core one-way valve according to claim 3, characterized in that: A first housing (23) is symmetrically provided below the main valve core (2) near the left and right sides. The first housing (23) is fixedly connected to the bottom of the inner wall of the sealing cover (14) by bolts.

5. The hydraulic system dual-core one-way valve according to claim 4, characterized in that: The inner wall of the first housing (23) is slidably connected to a first slider (24), and the top of the first slider (24) is fixedly connected to a first connecting rod (25) via bolts.

6. The hydraulic system dual-core one-way valve according to claim 5, characterized in that: The top end of the first connecting rod (25) passes through the top of the first housing (23) corresponding to its position and is fixedly connected to the bottom of the main valve core (2) via bolts. The bottom of the first sliding block (24) is fixedly connected to a first spring (26).

7. The hydraulic system dual-core one-way valve according to claim 2, characterized in that: The inner wall of the through hole (21) is slidably connected to a secondary valve core (3), the bottom of the secondary valve core (3) is fixedly connected to a second housing (31) via bolts, and the inner wall of the second housing (31) is slidably connected to a second slider (32).

8. The hydraulic system dual-core one-way valve according to claim 7, characterized in that: The bottom of the second slider (32) is fixedly connected to a second connecting rod (33) by means of bolts. The bottom end of the second connecting rod (33) passes through the bottom of the second housing (31) and is fixedly connected to the bottom of the inner wall of the sealing cover (14) by means of bolts. The top of the second slider (32) is fixedly connected to a second spring (34).

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