CN201531646U - System integrated oil circuit switch - Google Patents

Abstract

A system-integrated oil circuit switch, comprising: an adapter assembly, a reversing valve assembly, and the adapter assembly further includes: an adapter valve body, one end of which is a conversion connection end and the other end is connected to an external oil storage tank, and the valve body is provided with a first elastic body; the adapter spool is arranged in the valve body and is located between the connection end and the first elastic body, on which there is a push piece extending outward from the connection end; the adapter fixing piece is arranged on the outer wall of the valve body; The reversing valve assembly includes: a reversing valve body, one end is a reversing connection end and the other end is a closed end. Body, the inlet and outlet of the oil tank connected to the equipment are arranged axially on the wall of the valve body; the reversing valve core is arranged in the valve body and is located between the connecting end and the second elastic body, and the connecting end of the valve core is provided with a pushing valve. Corresponding plugging column. The utility model has the characteristics of automatically switching the oil circuit when it is connected and disconnected, and has the characteristics that it is not easy to leak and not easy to disengage.

Description

System integrated oil circuit switch

technical field

The utility model relates to the field of hydraulic technology, in particular to a system-integrated oil circuit switch applied to hydraulic system switching.

Background technique

Oil circuit (or oil source) switching is a problem that is often encountered in the field of hydraulic systems, especially large-scale engineering hydraulic equipment. Due to its large size, a large equipment is often divided into several parts for the convenience of transportation. When in use, the various components are assembled and connected together, and hoses and quick connectors are often used to connect the oil circuits of various components. If it is only the oil circuit connection, it is enough to use a quick connector; if it is the connection and switching between two oil sources, it is not enough to use a quick connector, and the isolation between the two oil sources and the resulting Security measures, resulting in a large number of system components, complex design, take up a lot of space.

Utility model content

The technical problem to be solved by the utility model is to provide a system-integrated oil circuit switch that integrates oil circuit isolation and leakage prevention, and can satisfy system reliability, safety, and high integration.

In order to achieve the above purpose, the utility model provides a system integrated oil circuit switch, which is used to switch the oil circuit of the equipment, which is characterized in that it includes:

An adapter assembly, further comprising:

An adapter valve body, which is a hollow cylinder, one end is a conversion connection end, and the other end is connected to an oil storage device outside the equipment, and a first elastic body is provided in the adapter valve body adjacent to the connection end;

An adapter valve core, which is arranged in the adapter valve body and is located between the conversion connection end and the first elastic body, and the adapter valve core is provided with a pusher extending outward from the adapter connection end pieces;

An adapter fixing part, having a fixing structure, arranged on the outer wall of the valve body of the adapter;

A reversing valve assembly, connected to the adapter assembly through the adapter fixing piece, including:

A reversing valve body, which is a hollow cylinder, one end is a reversing connection end, and the other end is a closed end. The reversing connection end is provided with a fixing structure matching the transfer fixing piece. A second elastic body is arranged from the closed end to the connecting end, and the oil liquid inlet and the oil liquid outlet of the oil tank connected to the equipment are arranged axially on the wall surface of the reversing valve body and located in the area where the second elastic body is installed;

A reversing valve core, arranged in the reversing valve body and between the reversing connection end and the second elastic body, the upward connection end of the reversing valve core is provided with a valve corresponding to the push piece. The blocking column.

The above-mentioned system-integrated oil circuit switch is characterized in that the inner hole of the port of the conversion connection end is a tapered surface hole, and the mating surface of the adapter valve core and the conversion connection end is a conical surface with the same taper.

The above-mentioned system-integrated oil circuit switch is characterized in that the maximum outer diameter of the adapter valve core is smaller than the maximum inner diameter of the adapter valve body.

The above-mentioned system-integrated oil circuit switch is characterized in that the reversing valve body has a first inner diameter section, and the connecting end of the reversing valve body has a second inner diameter section, and the first inner diameter is larger than the second inner diameter, The inner end of the reversing valve core is in contact with the second elastic body, and its outer diameter closely fits with the first inner diameter, and the outer diameter of the outer end of the reversing valve core closely fits with the second inner diameter.

The above-mentioned system-integrated oil circuit switch is characterized in that an oil channel is provided on the reversing valve core.

The above-mentioned system-integrated oil circuit switch is characterized in that the adapter fixing member is a nut fixed on the outer wall of the adapter valve body, and the outer surface of the adapter connection end is provided with an outer surface matching the nut. thread.

The above-mentioned system-integrated oil circuit switch is characterized in that the first elastic body is a spring, and its spring seat is fixed on the inner wall of the adapter valve body, and the second elastic body is a spring, and its spring seat is fixed closed end in the reversing valve body.

The above-mentioned system-integrated oil circuit switch is characterized in that seals are respectively provided on the outer tapered surface of the adapter valve core and the outer diameter of the inner end of the reversing valve core.

The above-mentioned system-integrated oil circuit switch is characterized in that the sealing member is vulcanized integrally with the adapter valve core and the reversing valve core.

The above-mentioned system-integrated oil circuit switch is characterized in that the outer end of the reversing valve core has a concave hole, and the plugging column is arranged in the concave hole.

The beneficial effect of the utility model is that: the system integrated oil circuit switch disclosed by the utility model integrates the advantages of the quick connector, and also has the feature of automatically switching the oil circuit when it is connected or disconnected, similar to a mechanical limit shuttle valve; At the same time, it overcomes the shortcoming that the quick joint is easy to leak at zero pressure; the oil circuit switch adopts a thread locking method, which avoids the shortcoming that the quick joint is easy to disengage due to negligence.

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the utility model.

Description of drawings

Fig. 1 is a structural diagram of the closed state of the system integrated oil circuit switch of the utility model;

Fig. 2 is a structural diagram of the system integrated oil circuit switch of the utility model in an open state.

Among them, reference signs

10 adapter assembly

11 Adapter valve body

12 The first spring seat

13 Adapter spool

14 Fixed connection nut

15 first spring

16 push piece

17 Fasteners

18 tubing

  19   Positioning column

20 Reversing valve assembly

21 Blocking column

  22  Reversing spool

  23   Reversing valve body

24 Second spring

25 screw plug

  26  Oil channel

27 Second spring seat

28 recessed hole

29 Seals

A, B Connect the inlet and outlet of the oil tank of the equipment

C Connect to the external oil storage port of the equipment

Detailed ways

Below in conjunction with accompanying drawing, structural principle and working principle of the present utility model are specifically described:

In the specific embodiment described in FIG. 1 and FIG. 2 , the utility model discloses a system-integrated oil circuit switch, which includes: an adapter assembly 10 and a reversing valve assembly 20 . By connecting and disconnecting the adapter assembly 10 and the reversing valve assembly 20, switching of the oil circuit system of the equipment is realized.

Please continue to refer to Figure 1 and Figure 2, as shown in the figure:

The adapter assembly 10 is a one-way control valve, comprising: an adapter valve body 11 , an adapter valve core 13 , a first spring seat 12 , a first spring 15 , and a fixed connection nut 14 .

The adapter valve body 11 is a hollow cylinder, one end is a conversion connection end, and the other end is fixedly connected to an oil pipe 18 through a fastener 17. The oil pipe 18 is connected to the oil storage port C outside the equipment, and the inner wall adjacent to the connection end in the valve body is fixed with The first spring seat 12, the first spring 15 is arranged between the first spring seat 12 and the connecting end, and the inner hole of the port at the connecting end of the adapter is a tapered surface hole.

The adapter spool 13 is arranged in the adapter valve body and is located between the connection end and the first spring 15. The mating surface of the adapter spool 13 and the conversion connection end is a conical surface with the same taper, and the taper surface of the adapter spool 13 A pusher 16 is extended upward to the body of the adapter valve body. The maximum outer diameter of the adapter valve core 13 is smaller than the maximum inner diameter of the adapter valve body 11. A positioning position is also provided at the contact point between the adapter valve core 13 and the first spring 15. The column 19 is inserted in the first spring 15 for effective positioning when the adapter valve core 13 is pushed.

The transfer fixing part 14 is used for fixed connection with the reversing assembly. The fixing structure of the transfer fixing part 14 can be selected in various forms. On the outer wall of the adapter valve body.

The reversing valve assembly 20 includes: a reversing valve core 22 , a reversing valve body 23 , a second spring 24 , a screw plug 25 , and a second spring seat 27 .

The reversing valve body 23 is a hollow cylinder, one end is a reversing connection end, and the other end is a closed end. The inner hole of the valve body is closed by a screw plug 25. Connection structure, the outer surface of the reversing valve body 23 of the present utility model is provided with the external thread that matches with the connecting nut 14, the inner diameter of the reversing valve body is two sections of different sizes, the connection end port is the second inner diameter, from the second inner diameter To the closed end is the first inner diameter, the first inner diameter is greater than the second inner diameter, that is, the inner diameter of the connecting end port of the reversing valve body is smaller than the inner diameter from the port to the closed end, and the second spring seat 27 is fixed on the screw in the reversing valve body. On the plug 25, the second spring 24 is set from the second spring seat 27 to the connecting end, and on the wall of the reversing valve body, the oil inlet and the oil outlet A and B of the oil tank connected to the equipment are arranged axially in the second spring setting area. .

The reversing valve core 22 is arranged in the reversing valve body, between the reversing connection end port and the second spring, the inner end of the reversing valve core 22 is against the second spring 24, and its outer diameter is the same as that of the reversing valve body. The first inner diameter is closely matched, and the outer diameter of the outer end of the reversing valve core 22 is closely matched with the second inner diameter of the reversing valve body. The outer end of the reversing valve core 22 has a concave hole 28, and the concave hole 28 is inwardly facing the reversing connection end. The port is provided with a blocking post 21 corresponding to the push piece 16, the top surface of the blocking post 21 is lower than the end face of the reversing connection end, and an oil channel 26 is also provided on the reversing valve core.

Seals 29 are respectively provided on the outer cone surface of the adapter spool 13 of the utility model and the outer diameter of the reversing valve core 22 and the second spring. vulcanized into one. In order to prevent the conical surface seal from oil leakage at zero pressure, a radial seal is also provided on the contact surface between the reversing valve body 23 and the adapter valve body 11, which can effectively prevent zero pressure leakage. Radial seals can also be vulcanized.

Both the first elastic member and the second elastic member of the present invention are selected as springs, but not limited thereto, and other elastic parts can also be selected to achieve the purpose of the present invention.

As shown in Figure 1, it is the closed state of the integrated oil circuit switch of the utility model, that is, the state where the adapter assembly and the reversing valve assembly are disengaged, and the reversing valve core is pushed to the reversing connection end by the second spring (referred to in the figure) The position shown) closes the reversing connection port, and the oil flow state is shown in the figure. A circuit is formed by connecting the oil inlet, oil outlet A, B of the oil tank of the equipment and the set oil tank.

As shown in Figure 2, it is the open state of the system integrated oil circuit switch of the utility model. The pusher pushes the blocking column on the reversing spool to move the reversing spool to the right. When the nut is screwed in to the bottom, the reversing spool is pushed to the open position, and the spool of the adapter also presses the first spring Move to the left. At this time, the reversing connection port and the adapter connection port are opened at the same time. The oil flow state is shown in the figure. A circuit is formed to the connection port, the connection port of the adapter, the valve body of the adapter and the oil storage port C outside the equipment.

In summary, the system-integrated oil circuit switch provided by the utility model integrates the advantages of quick joints, and also has the characteristics of automatically switching the oil circuit when it is connected and disconnected, similar to a mechanical limit shuttle valve; at the same time, it overcomes the The shortcoming that the quick joint is easy to leak at zero pressure; the oil circuit switch adopts the thread locking method, which avoids the shortcoming that the quick joint is easy to disengage due to negligence.

Of course, the utility model can also have other various embodiments, and those skilled in the art can make various corresponding changes and deformations according to the utility model without departing from the spirit and essence of the utility model, but These corresponding changes and deformations should all belong to the protection scope of the appended claims of the present utility model.

Claims (10)

1. A system-integrated oil circuit switch for switching the oil circuit of equipment, characterized in that the system-integrated oil circuit switch includes: An adapter assembly, further comprising: An adapter valve body, which is a hollow cylinder, one end is a conversion connection end, and the other end is connected to an oil storage device outside the equipment, and a first elastic body is provided in the adapter valve body adjacent to the connection end; An adapter valve core, which is arranged in the adapter valve body and is located between the conversion connection end and the first elastic body, and the adapter valve core is provided with a pusher extending outward from the adapter connection end pieces; A transfer fixing part, having a fixing structure, is arranged on the outer wall of the valve body of the transfer joint; and, A reversing valve assembly, which is connected to the adapter assembly through the adapter fixing piece, further includes: A reversing valve body, which is a hollow cylinder, one end is a reversing connection end, and the other end is a closed end. The reversing connection end is provided with a fixing structure matching the transfer fixing piece. A second elastic body is arranged from the closed end to the connecting end, and the oil liquid inlet and the oil liquid outlet of the oil tank connected to the equipment are arranged axially on the wall surface of the reversing valve body and located in the area where the second elastic body is installed; A reversing valve core, arranged in the reversing valve body and between the reversing connection end and the second elastic body, the upward connection end of the reversing valve core is provided with a valve corresponding to the push piece. The blocking column. 2. The system-integrated oil circuit switch according to claim 1, characterized in that the inner hole of the port of the conversion connection end is a tapered surface hole, and the mating surface of the adapter valve core and the conversion connection end is tapered Consistent cone. 3. The system-integrated oil circuit switch according to claim 2, wherein the maximum outer diameter of the adapter valve core is smaller than the maximum inner diameter of the adapter valve body. 4. The system-integrated oil circuit switch according to claim 1, wherein the reversing valve body has a first inner diameter section, the connecting end of the reversing valve body has a second inner diameter section, and the first inner diameter section One inner diameter is larger than the second inner diameter, the inner end of the reversing valve core is against the second elastic body, and its outer diameter is closely matched with the first inner diameter, and the outer diameter of the outer end of the reversing valve core is in line with the second elastic body. The second inner diameter is a tight fit. 5. The system-integrated oil circuit switch according to claim 4, wherein an oil channel is provided on the reversing valve core. 6. The system-integrated oil circuit switch according to claim 1, 2, 3, 4 or 5, wherein the adapter fixing member is a nut fixed on the outer wall of the adapter valve body, so The outer surface of the conversion connection end is provided with an external thread matched with the nut. 7. The system-integrated oil circuit switch according to claim 1, 2, 3, 4 or 5, wherein the first elastic body is a spring, and its spring seat is fixed on the inner wall of the adapter valve body Above, the second elastic body is a spring, and its spring seat is fixed at the closed end of the reversing valve body. 8. The system-integrated oil circuit switch according to claim 2 or 4, characterized in that seals are provided on the outer tapered surface of the adapter valve core and the outer diameter of the inner end of the reversing valve core. pieces. 9 . The system-integrated oil circuit switch according to claim 8 , wherein the sealing member is vulcanized integrally with the adapter valve core and the reversing valve core. 10 . 10 . The system-integrated oil circuit switch according to claim 4 , wherein the outer end of the reversing valve core has a concave hole, and the plugging column is arranged in the concave hole. 11 .

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