Sealed type multi-way valve body

Abstract

The utility model discloses a sealed multi-way valve body, and relates to the technical field of multi-way valves. The valve comprises a valve body, a plurality of oil way connectors are arranged on the valve body, fixing rings are arranged on the peripheral sides of the oil way connectors, sealing covers are arranged on the oil way connectors in a threaded mode, positioning rings are arranged on the peripheral sides of the sealing covers, the positioning rings and the sealing covers are in butt joint with the fixing rings in an abutting mode, and annular grooves are formed in the fixing rings. A main sealing ring matched with the annular groove in an inserted mode is arranged on the positioning ring. The mode that in the prior art, the oil way connector is pressed, clamped and sealed through a plastic protective cover is abandoned, the phenomenon that in the long-term use process, the plastic protective cover is loosened or falls off due to frequent pressing and clamping can be avoided, the possibility that sundries enter the valve body through the oil way connector is reduced, normal use is guaranteed, and the service life of the valve body is prolonged. Therefore, durability is improved.

Description

Technical Field

[0001] The present application relates to the technical field of multi-way valves, and in particular to a sealed multi-way valve body. Background Art

[0002] A multi-way valve is a control valve widely used in engineering machinery, agricultural machinery, industrial automation and other fields. It can control the actions of multiple actuators and realize complex system control. In engineering machinery, it is mainly used for the lifting arm of a crane and the bucket of an excavator. A multi-way valve usually includes a valve body, a valve core, a seal, an operating mechanism, etc. A plurality of oil circuit interfaces are arranged on the valve body. In the prior art, when the oil circuit interface is closed, the oil circuit interface is mostly pressed and engaged by a plastic protective cover. During long-term use, the plastic protective cover is easily loosened or fallen off due to frequent pressing and engaging, thereby causing debris to pass through the oil circuit interface into the valve body, affecting normal use. Therefore, a sealed multi-way valve body is proposed. Utility Model Content

[0003] The purpose of the present application is to solve the technical problem that when the oil circuit interface is closed, the oil circuit interface is mostly pressed and locked by a plastic protective cover. During long-term use, the plastic protective cover is easily loosened or falls off due to frequent pressing and locking, thereby causing debris to pass through the oil circuit interface into the valve body and affect normal use. The present application provides a sealed multi-way valve body.

[0004] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0005] A sealed multi-way valve body comprises a valve body, wherein a plurality of oil circuit interfaces are arranged on the valve body, a fixing ring is arranged on the outer peripheral side of the oil circuit interface, a sealing cover is threadedly arranged on the oil circuit interface, a positioning ring is arranged on the outer peripheral side of the sealing cover and both of them are in contact with and overlap the fixing ring, an annular groove is opened on the fixing ring, and a main sealing ring which is plugged into and matched with the annular groove is arranged on the positioning ring.

[0006] Furthermore, a sealing ring is provided on the sealing cover, and the sealing ring is in contact and overlapped with the inner side wall of the oil circuit interface.

[0007] Furthermore, a sealing groove in an annular shape is provided on the sealing cover, and a fixed sealing ring plugged and matched with the sealing groove is provided on the oil circuit interface.

[0008] Furthermore, a positioning groove in an annular structure is provided on the main sealing ring, and a secondary sealing ring plugged and matched with the positioning groove is arranged in the annular groove.

[0009] Furthermore, the fixing ring and the positioning ring are provided with reinforcement pieces for improving the connection strength between the fixing ring and the positioning ring.

[0010] Furthermore, the reinforcement member includes two arc-shaped plates that are hingedly matched and enclose an annular structure. The fixing ring and the positioning ring are both provided with an annular limiting groove, and the two limiting grooves form a sealing groove. The arc-shaped plate is provided with an arc-shaped sealing ring that is plugged into the sealing groove. The two arc-shaped plates are locked or unlocked by a locking member.

[0011] Furthermore, the locking member includes a fixing plate arranged on one of the arc plates, the fixing plate is provided with a notch, and the other arc plate is hinged with a screw rod which is plugged into the notch, and the screw rod is threaded with a locking nut which overlaps with the fixing plate.

[0012] Furthermore, the main sealing ring, the sealing ring, the fixed sealing ring, the auxiliary sealing ring and the arc-shaped sealing ring are all configured with inwardly contracted guiding inclined surfaces.

[0013] The beneficial effects of the present application are as follows: the present application abandons the method of pressing and locking the oil circuit interface with a plastic protective cover in the prior art, which can avoid the loosening or falling of the plastic protective cover due to frequent pressing and locking during long-term use, reduce the possibility of debris entering the valve body through the oil circuit interface, ensure normal use, and therefore is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the structure of this application;

[0015] Figure 2 It is an exploded perspective view of some structures of this application;

[0016] Figure 3 This application Figure 2 The enlarged view of point A in the middle;

[0017] Figure 4 This application Figure 2 A three-dimensional cross-sectional view of

[0018] Figure 5 This application Figure 4 The enlarged view of point B in the middle;

[0019] Figure 6 This application Figure 4 Enlarged view of point C in the middle.

[0020] Figure numerals: 1. valve body; 2. oil circuit interface; 3. fixing ring; 4. sealing cover; 5. positioning ring; 6. annular groove; 7. main sealing ring; 8. sealing ring; 9. sealing groove; 10. fixing sealing ring; 11. positioning groove; 12. auxiliary sealing ring; 13. arc plate; 14. limiting groove; 15. arc sealing ring; 16. fixing plate; 17. notch; 18. screw; 19. locking nut. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0022] like Figure 1-Figure 6 As shown, a sealed multi-way valve body proposed in an embodiment of the present application includes a valve body 1, a plurality of oil circuit interfaces 2 are arranged on the valve body 1, the oil circuit interfaces 2 are fixedly arranged on the valve body 1, a fixing ring 3 is arranged on the outer peripheral side of the oil circuit interface 2, the fixing ring 3 is fixedly arranged on the outer peripheral side of the oil circuit interface 2 and the two are coaxially distributed, a sealing cover 4 is threadedly arranged on the oil circuit interface 2, a positioning ring 5 is arranged on the outer peripheral side of the sealing cover 4 and both are in contact with and overlapped with the fixing ring 3, the positioning ring 5 is fixedly arranged on the outer peripheral side of the sealing cover 4 and the two are coaxially distributed, an annular groove 6 is opened on the fixing ring 3, the annular groove 6 is coaxially distributed with the fixing ring 3, a main sealing ring 7 plug-fitting with the annular groove 6 is arranged on the positioning ring 5, and the main sealing ring 7 is fixedly arranged on the positioning ring 5 and the two are coaxially distributed;

[0023] In the initial state, the oil circuit interface 2 is not closed. When in use, the sealing cover 4 is tightened onto the oil circuit interface 2 until the sealing cover 4 and the positioning ring 5 are both in contact with the fixing ring 3, and the sealing cover 4 can be positioned by the fixing ring 3. During this process, the main sealing ring 7 is inserted and completely located in the annular groove 6 to close the oil circuit interface 2 and improve the sealing performance. Conversely, the sealing cover 4 is loosened to be away from the oil circuit interface 2, the sealing cover 4 and the positioning ring 5 are away from the fixing ring 3, and the main sealing ring 7 is withdrawn from the annular groove 6 to release the oil circuit interface 2.

[0024] To sum up, the present application abandons the method of pressing and locking the oil circuit interface 2 by a plastic protective cover in the prior art, which can avoid the loosening or falling of the plastic protective cover due to frequent pressing and locking during long-term use, reduce the possibility of debris entering the valve body 1 through the oil circuit interface 2, ensure normal use, and therefore is more practical.

[0025] like Figure 5 As shown, in some embodiments, a sealing ring 8 is provided on the sealing cover 4, the sealing ring 8 is fixed on the sealing cover 4 and the two are coaxially distributed, and the sealing ring 8 is in contact with and overlaps the inner side wall of the oil circuit interface 2;

[0026] Referring to the above, when the sealing cover 4 is tightened onto the oil circuit interface 2, the sealing ring 8 is inserted and completely located in the oil circuit interface 2. The sealing performance is further improved through the contact and overlap between the sealing ring 8 and the inner wall of the oil circuit interface 2. Conversely, when the sealing cover 4 is loosened away from the oil circuit interface 2, the sealing ring 8 withdraws from the oil circuit interface 2.

[0027] like Figure 2-Figure 5As shown, in some embodiments, a sealing groove 9 with an annular structure is provided on the sealing cover 4, and the sealing groove 9 is coaxially distributed with the sealing cover 4. A fixed sealing ring 10 plugged and matched with the sealing groove 9 is provided on the oil circuit interface 2, and the fixed sealing ring 10 is fixedly arranged at the free end of the oil circuit interface 2 and coaxially distributed therewith;

[0028] Referring to the above, when the sealing cover 4 is tightened onto the oil circuit interface 2, the fixed sealing ring 10 is inserted and completely enters the sealing groove 9. The sealing performance is further improved through the cooperation between the fixed sealing ring 10 and the sealing groove 9. Conversely, when the sealing cover 4 is loosened away from the oil circuit interface 2, the fixed sealing ring 10 withdraws from the sealing groove 9.

[0029] like Figure 5-Figure 6 As shown, in some embodiments, a positioning groove 11 with an annular structure is provided on the main sealing ring 7, and the positioning groove 11 is coaxially distributed with the main sealing ring 7. A secondary sealing ring 12 plugged and matched with the positioning groove 11 is provided in the annular groove 6, and the secondary sealing ring 12 is fixed in the annular groove 6 and the two are coaxially distributed;

[0030] Referring to the above, when the main sealing ring 7 is inserted and completely located in the annular groove 6, the secondary sealing ring 12 is inserted and completely enters the positioning groove 11. The sealing performance is further improved through the cooperation between the secondary sealing ring 12 and the positioning groove 11. Conversely, when the main sealing ring 7 withdraws from the annular groove 6, the secondary sealing ring 12 withdraws from the positioning groove 11.

[0031] like Figure 2-Figure 3 As shown, in some embodiments, a reinforcement member is provided on the fixing ring 3 and the positioning ring 5, which is used to improve the connection strength between the fixing ring 3 and the positioning ring 5;

[0032] Referring to the above, when the positioning ring 5 is in contact with and overlapped with the fixing ring 3, the reinforcing member is used to increase the connection strength between the fixing ring 3 and the positioning ring 5, thereby reducing the possibility of the sealing cover 4 loosening due to vibration, thereby improving the stability in use.

[0033] like Figure 2 As shown, in some embodiments, the reinforcement member includes two arc-shaped plates 13 that are hinged and enclosed in an annular structure, and a limiting groove 14 with an annular structure is provided on the fixing ring 3 and the positioning ring 5. The limiting groove 14 is coaxially distributed with the fixing ring 3 or the positioning ring 5, and the two limiting grooves 14 form a sealing groove. An arc-shaped sealing ring 15 that is plugged and matched with the sealing groove is provided on the arc-shaped plate 13. The arc-shaped sealing ring 15 is fixedly arranged on the inner side wall of the arc-shaped plate 13 and the two are coaxially distributed. The two arc-shaped plates 13 are locked or unlocked by a locking member;

[0034] Referring to the above, when the positioning rings 5 ​​are in contact with and overlap the fixing ring 3, the two limiting grooves 14 form a sealing groove, so that the two arc plates 13 are enclosed in an annular structure and are in contact with and overlap the fixing ring 3 and the positioning ring 5. The two arc sealing rings 15 are inserted and completely located in the sealing groove, and then the two arc plates 13 are locked by the locking member. Through the cooperation of the arc sealing rings 15 and the sealing groove, not only the possibility of loosening of the sealing cover 4 due to vibration can be reduced, but also the sealing performance can be further improved. Conversely, the two arc plates 13 are unlocked by the locking member, so that the two arc plates 13 are away from the fixing ring 3 and the positioning ring 5, and the arc sealing rings 15 withdraw from the sealing groove.

[0035] like Figure 3 As shown, in some embodiments, the locking member includes a fixing plate 16 disposed on one of the arc-shaped plates 13, the fixing plate 16 is fixed on the arc-shaped plate 13, a notch 17 is provided on the fixing plate 16, a screw 18 is hingedly connected to the other arc-shaped plate 13 and plugged into the notch 17, and a locking nut 19 is threadedly provided on the screw 18 and overlapped with the fixing plate 16;

[0036] Referring to the above, when the two arc plates 13 are enclosed in an annular structure and are in contact and overlap with the fixing ring 3 and the positioning ring 5, the screw 18 is rotated to be located in the notch 17, and the locking nut 19 is tightened to be in contact and overlap with the fixing plate 16. At this time, the screw 18 cannot be rotated to exit the notch 17, that is, the two arc plates 13 cannot move, thereby locking the two arc plates 13. Conversely, the locking nut 19 is loosened to move away from the fixing plate 16, and the screw 18 is able to rotate to exit the notch 17, thereby unlocking the two arc plates 13.

[0037] like Figure 2-Figure 6 As shown, in some embodiments, the main sealing ring 7, the sealing ring 8, the fixed sealing ring 10, the auxiliary sealing ring 12 and the arc-shaped sealing ring 15 are all configured with an inwardly contracted guiding inclined surface;

[0038] Referring to the above, when in use, through the setting of the guiding inclined surface, it is convenient for the main sealing ring 7 to enter the annular groove 6, the sealing ring 8 to enter the oil circuit interface 2, the fixed sealing ring 10 to enter the sealing groove 9, the auxiliary sealing ring 12 to enter the positioning groove 11, and the arc-shaped sealing ring 15 to enter the sealing groove, thereby avoiding movement interference and making it more convenient to use.

[0039] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sealed multi-way valve body, comprising a valve body (1), wherein the valve body (1) is provided with a plurality of oil circuit interfaces (2), characterized in that: A fixing ring (3) is arranged on the outer peripheral side of the oil circuit interface (2), a sealing cover (4) is threadedly arranged on the oil circuit interface (2), a positioning ring (5) is arranged on the outer peripheral side of the sealing cover (4), and both are in contact with and overlapped with the fixing ring (3), an annular groove (6) is provided on the fixing ring (3), and a main sealing ring (7) is arranged on the positioning ring (5) and is plugged into and matched with the annular groove (6).

2. The sealed multi-way valve body according to claim 1, characterized in that: The sealing cover (4) is provided with a sealing ring (8), and the sealing ring (8) is in contact with and overlaps the inner wall of the oil circuit interface (2).

3. The sealed multi-way valve body according to claim 2, characterized in that: The sealing cover (4) is provided with a sealing groove (9) in an annular structure, and the oil circuit interface (2) is provided with a fixed sealing ring (10) which is plugged into and matched with the sealing groove (9).

4. The sealed multi-way valve body according to claim 3, characterized in that: The main sealing ring (7) is provided with an annular positioning groove (11), and the annular groove (6) is provided with a secondary sealing ring (12) which is plugged into and matched with the positioning groove (11).

5. The sealed multi-way valve body according to claim 4, characterized in that: The fixing ring (3) and the positioning ring (5) are provided with reinforcement pieces, which are used to improve the connection strength between the fixing ring (3) and the positioning ring (5).

6. The sealed multi-way valve body according to claim 5, characterized in that: The reinforcing member comprises two arc-shaped plates (13) which are hingedly matched and enclose an annular structure. The fixing ring (3) and the positioning ring (5) are both provided with an annular limiting groove (14). The two limiting grooves (14) form a sealing groove. The arc-shaped plate (13) is provided with an arc-shaped sealing ring (15) which is plugged into the sealing groove. The two arc-shaped plates (13) are locked or unlocked by a locking member.

7. The sealed multi-way valve body according to claim 6, characterized in that: The locking member comprises a fixing plate (16) arranged on one of the arc-shaped plates (13), a notch (17) being provided on the fixing plate (16), a screw rod (18) being hingedly connected to the other arc-shaped plate (13) and plugging and cooperating with the notch (17), and a locking nut (19) being threadedly arranged on the screw rod (18) and contacting and overlapping with the fixing plate (16).

8. The sealed multi-way valve body according to claim 6, characterized in that: The main sealing ring (7), the sealing ring (8), the fixed sealing ring (10), the auxiliary sealing ring (12) and the arc-shaped sealing ring (15) are all configured with inwardly contracted guiding inclined surfaces.

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