Energy-saving differential valve for mine

Abstract

The utility model discloses an energy-saving type differential valve for a mine, and relates to the technical field of hydraulic control, the energy-saving type differential valve for the mine is provided with a first valve core assembly, a second valve core assembly, a first plug, a second plug, a first check ring, a first O-shaped sealing ring, a second check ring and a second O-shaped sealing ring; gaps between the first valve element assembly, the second valve element assembly, the first plug, the second plug and the connector base and the valve body can be sealed, so that the sealing performance of the whole valve body is improved, two valve elements of the first valve element assembly and the second valve element assembly are arranged and can operate at the same time, and meanwhile the connector base can be used for being connected with an external pipeline. And the installation is very convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic control, in particular to an energy-saving differential valve for mines. Background Art

[0002] At present, most of the differential valves used in mines are operated by hydraulic control systems. Due to the harsh mining environment and high dust content, dust easily accumulates on mining equipment. If dust penetrates into the differential valve, it will cause the differential valve to get stuck, affecting its normal use.

[0003] For example, CN 114922876 A discloses an electromagnetic differential valve, including a driving hydraulic cylinder and a differential valve body, wherein a differential oil chamber P is arranged in the differential valve body, wherein the differential valve body is provided with an inlet P, an oil outlet B and an oil return port T connected to the differential oil chamber P, wherein a reversing valve core is slidably arranged in the differential oil chamber P, wherein the reversing valve core is provided with a reversing oil return passage, wherein a driving assembly for driving the reversing valve core to slide is arranged in the differential valve body, wherein the driving hydraulic cylinder includes an upper cavity and a lower cavity, wherein the lower cavity is provided with a piston rod, wherein the upper cavity is connected with a Y oil pipe, wherein the inlet P is connected with the Y oil pipe, and the oil outlet B is connected with the lower cavity, wherein the electromagnetic differential valve is provided with a electromagnetic differential valve, wherein the electromagnetic differential valve can make good use of the cylinder differential principle and play an energy-saving role;

[0004] The differential valve in this patent has fewer sealing structures inside. During subsequent use, surrounding dust can easily penetrate into the differential valve, causing the differential valve to become stuck and unable to work normally. The sealing performance is not very good. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides an energy-saving differential valve for mining, which solves the problem of poor sealing performance.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: an energy-saving differential valve for mining, comprising a valve body, a first valve core assembly is fixedly mounted on the valve body, a second valve core assembly is arranged on the side of the first valve core assembly, a first plug is evenly distributed on one side of the valve body, a second plug corresponding to the first plug is arranged on one side of the valve body, a first retaining ring is arranged outside the first plug and the second plug, a first O-ring is arranged inside the first retaining ring, a joint seat is arranged at the lower side of the first plug, a valve seat is arranged inside the joint seat, a guide sleeve is fixedly mounted outside the valve seat, a second retaining ring is arranged between the joint seat and the valve body, a second O-ring is arranged inside the second retaining ring, and a third plug is installed at the lower end of the valve body.

[0007] Preferably, the third plug is arranged on the lower side of the joint seat, a third retaining ring is arranged at the intersection of the third plug and the valve body, and a third O-ring is arranged inside the third retaining ring.

[0008] Preferably, three groups of the first plugs and the second plugs are respectively provided, and the first plugs and the second plugs are respectively installed outside the first valve core assembly and the second valve core assembly.

[0009] Preferably, a fourth retaining ring is fixedly installed on the outside of the first valve core assembly and the second valve core assembly, and a fourth O-ring is arranged inside the fourth retaining ring.

[0010] Furthermore, the fourth retaining ring and the fourth O-ring are provided in four groups respectively, and the fourth retaining ring is attached to the inner wall of the valve body.

[0011] Furthermore, the first retaining ring, the second retaining ring, the third retaining ring and the fourth retaining ring are made of polytetrafluoroethylene, and the first O-ring, the second O-ring, the third O-ring and the fourth O-ring are made of polyurethane.

[0012] Beneficial Effects

[0013] The utility model provides an energy-saving differential valve for mining. Compared with the prior art, it has the following beneficial effects:

[0014] The energy-saving differential valve for mining can seal the gap between the first valve core assembly, the second valve core assembly, the first plug, the second plug, the first retaining ring, the first O-ring, the second retaining ring and the second O-ring, thereby improving the sealing performance of the entire valve body. Two sets of valve cores, the first valve core assembly and the second valve core assembly, are provided, which can operate simultaneously, and the connector seat can be used to connect to external pipelines, and installation is also very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a front view of the utility model;

[0017] Figure 3 It is a three-dimensional diagram of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the first valve core component in the utility model.

[0019] In the figure: 1. valve body; 2. first valve core assembly; 201. fourth retaining ring; 202. fourth O-ring; 3. second plug; 4. first O-ring; 5. first retaining ring; 6. valve seat; 7. guide sleeve; 8. second O-ring; 9. second retaining ring; 10. connector seat; 11. second valve core assembly; 12. first plug; 13. third plug. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 The utility model provides a technical solution: an energy-saving differential valve for mining, comprising a valve body 1, a first valve core assembly 2 is fixedly mounted on the valve body 1, a second valve core assembly 11 is arranged on the side of the first valve core assembly 2, a uniformly distributed first plug 12 is arranged on one side of the valve body 1, a second plug 3 corresponding to the first plug 12 is arranged on one side of the valve body 1, a first retaining ring 5 is arranged outside the first plug 12 and the second plug 3, a first O-ring 4 is arranged inside the first retaining ring 5, a joint seat 10 is arranged at the lower side of the first plug 12, a valve seat 6 is arranged inside the joint seat 10, a guide sleeve 7 is fixedly mounted outside the valve seat 6, a second retaining ring 9 is arranged between the joint seat 10 and the valve body 1, a second O-ring 8 is arranged inside the second retaining ring 9, a third plug 13 is installed at the lower end of the valve body 1, and the position of the joint seat 10 can be fixed by the arrangement of the third plug 13.

[0022] The third plug 13 is arranged at the lower side of the joint seat 10, a third retaining ring is arranged at the intersection of the third plug 13 and the valve body 1, a third O-ring is arranged inside the third retaining ring, three groups of the first plug 12 and the second plug 3 are arranged respectively, the first plug 12 and the second plug 3 are respectively installed outside the first valve core assembly 2 and the second valve core assembly 11, a fourth retaining ring 201 is fixedly installed outside the first valve core assembly 2 and the second valve core assembly 11, a fourth O-ring 201 is arranged inside the fourth retaining ring 201 2. Four groups of fourth retaining rings 201 and fourth O-rings 202 are respectively provided. The fourth retaining ring 201 is attached to the inner wall of the valve body 1. The first retaining ring 5, the second retaining ring 9, the third retaining ring and the fourth retaining ring 201 are made of polytetrafluoroethylene, and the first O-ring 4, the second O-ring 8, the third O-ring and the fourth O-ring 202 are made of polyurethane. By providing various O-rings and retaining rings, a double sealing effect can be achieved to seal various interfaces of the valve body 1.

[0023] During operation, first fix each O-ring and retaining ring on the outside of the corresponding connecting component, and then install the first valve core assembly 2, the second valve core assembly 11, the first plug 12, the second plug 3, the third plug 13 and the joint seat 10 on the valve body 1, and then connect the external pipeline and equipment to make the differential valve work normally. By setting the first valve core assembly 2, the second valve core assembly 11, the first plug 12, the second plug 3, the first retaining ring 5, the first O-ring 4, the second retaining ring 9 and the second O-ring 8, the gap between the first valve core assembly 2, the second valve core assembly 11, the first plug 12, the second plug 3 and the joint seat 10 and the valve body 1 can be sealed, thereby improving the sealing performance of the entire valve body 1. Two sets of valve cores, the first valve core assembly 2 and the second valve core assembly 11, are set, which can operate at the same time. At the same time, the joint seat 10 can be used to connect to the external pipeline, and the installation is also very convenient.

[0024] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. An energy-saving differential valve for use in mines, comprising a valve body (1), characterized in that: A first valve core assembly (2) is fixedly mounted on the valve body (1), a second valve core assembly (11) is arranged on the side of the first valve core assembly (2), a uniformly distributed first plug (12) is arranged on one side of the valve body (1), a second plug (3) corresponding to the first plug (12) is arranged on one side of the valve body (1), a first retaining ring (5) is arranged outside the first plug (12) and the second plug (3), a first O-type sealing ring (4) is arranged inside the first retaining ring (5), a joint seat (10) is arranged at the lower side of the first plug (12), a valve seat (6) is arranged inside the joint seat (10), a guide sleeve (7) is fixedly mounted outside the valve seat (6), a second retaining ring (9) is arranged between the joint seat (10) and the valve body (1), a second O-type sealing ring (8) is arranged inside the second retaining ring (9), and a third plug (13) is mounted at the lower end of the valve body (1).

2. The energy-saving differential valve for mining according to claim 1, characterized in that: The third plug (13) is arranged on the lower side of the joint seat (10), a third retaining ring is arranged at the intersection of the third plug (13) and the valve body (1), and a third O-ring is arranged inside the third retaining ring.

3. The energy-saving differential valve for mining according to claim 1, characterized in that: The first plug (12) and the second plug (3) are respectively provided in three groups, and the first plug (12) and the second plug (3) are respectively installed outside the first valve core assembly (2) and the second valve core assembly (11).

4. The energy-saving differential valve for mining according to claim 1 is characterized in that: A fourth retaining ring (201) is fixedly mounted on the outside of the first valve core assembly (2) and the second valve core assembly (11), and a fourth O-type sealing ring (202) is arranged inside the fourth retaining ring (201).

5. The energy-saving differential valve for mining according to claim 4, characterized in that: Four groups of the fourth retaining ring (201) and the fourth O-ring (202) are respectively provided, and the fourth retaining ring (201) is fitted on the inner wall of the valve body (1).

6. The energy-saving differential valve for mining according to claim 5, characterized in that: The material of the first retaining ring (5), the second retaining ring (9), the third retaining ring and the fourth retaining ring (201) is polytetrafluoroethylene, and the material of the first O-type sealing ring (4), the second O-type sealing ring (8), the third O-type sealing ring and the fourth O-type sealing ring (202) is polyurethane.

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