CN218000009U - Lifting valve and vehicle - Google Patents

Abstract

The utility model relates to a lifting valve and a vehicle, which comprises a valve body, a first lifting piston component, a second lifting piston component, a first descending piston component, a second descending piston component and a switching component; the valve body is provided with a first ascending cavity, a second ascending cavity, a first descending cavity, a second descending cavity, a first air inlet cavity, a second air inlet cavity and an air inlet hole; the first ascending piston assembly is used for controlling the connection and disconnection of the first ascending cavity and the first air inlet cavity; the second ascending piston is used for controlling the on-off of the second ascending cavity and the second air inlet cavity; the first descending piston assembly is used for controlling the connection and disconnection of the first descending cavity and the first air inlet cavity; the second descending piston assembly is used for controlling the on-off of the second descending cavity and the second air inlet cavity; the switching assembly is used for selectively communicating one of the first air inlet cavity and the second air inlet cavity with the air inlet hole. The utility model discloses a lift valve is equivalent to be in the same place two current lift valve integrations, can realize controlling two target object, has improved the suitability of the valve of lifting.

Description

Lifting valve and vehicle

Technical Field

The utility model belongs to gas accuse device field relates to a lift valve and vehicle.

Background

Existing lift valves typically include a valve body, a lift piston assembly, a lower piston assembly, and a handle assembly. The valve body is provided with an ascending cavity, a descending cavity, an air inlet cavity, a first communicating hole, a second communicating hole and an air inlet hole. The first communicating hole penetrates from the bottom surface of the ascending cavity to the top surface of the air inlet cavity, the second communicating hole penetrates from the bottom surface of the descending cavity to the top surface of the air inlet cavity, and the air inlet hole penetrates from the outer surface of the valve body to the inner surface of the air inlet cavity. The ascending piston assembly is arranged in the ascending cavity and used for controlling the on-off of the ascending cavity and the air inlet cavity; the descending piston assembly is arranged in the descending cavity and used for controlling the on-off of the descending cavity and the air inlet cavity.

When the pneumatic control hydraulic valve is used, the ascending cavity and the descending cavity are communicated with two control ends of the pneumatic control hydraulic valve respectively, the air inlet hole is communicated with the air inlet cavity, and the air inlet hole is communicated with an air source. When the ascending cavity is communicated with the air inlet cavity, the air of the air source can enter a control end of the pneumatic control hydraulic valve through the air inlet hole, the air inlet cavity and the ascending cavity to control the action of the pneumatic control hydraulic valve, so that the corresponding target object is ascended; when the descending cavity is communicated with the air inlet cavity, the air of the air source can enter the other control end of the pneumatic control hydraulic valve through the air inlet hole, the air inlet cavity and the descending cavity to control the action of the pneumatic control hydraulic valve, and then the descending of the corresponding target object is realized. The principle of this type of lift valve can be referred to chinese utility model patent application No. CN 200620148842.2.

However, the lifting valve only can control one pneumatic control hydraulic valve, is poor in applicability and cannot meet actual requirements. For example, for a vehicle which needs to control the lifting of two target objects through two pneumatic control hydraulic valves, two lifting valves are needed to control the two pneumatic control hydraulic valves respectively, which not only causes difficulty in arrangement of the lifting valves and related pipelines, but also increases operation difficulty of users.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: aiming at the problem that a lifting valve in the prior art can only control one pneumatic control hydraulic valve, the lifting valve and a vehicle are provided.

In order to solve the above technical problem, an embodiment of the present invention provides a lift valve, including a valve body, a first lift piston assembly, a second lift piston assembly, a first lower piston assembly, a second lower piston assembly, and a switching assembly; the valve body is provided with a first ascending cavity, a second ascending cavity, a first descending cavity, a second descending cavity, a first air inlet cavity, a second air inlet cavity and an air inlet hole; the first ascending piston assembly is arranged in the first ascending cavity and used for controlling the on-off of the first ascending cavity and the first air inlet cavity; the second ascending piston assembly is arranged in the second ascending cavity and used for controlling the on-off of the second ascending cavity and the second air inlet cavity; the first descending piston assembly is arranged in the first descending cavity and used for controlling the connection and disconnection of the first descending cavity and the first air inlet cavity; the second descending piston assembly is arranged in the second descending cavity and used for controlling the on-off of the second descending cavity and the second air inlet cavity; the switching assembly is movably mounted on the valve body so as to selectively communicate one of the first air inlet cavity and the second air inlet cavity with the air inlet hole.

Optionally, the valve body is further provided with a mounting hole, a first air inlet channel and a second air inlet channel; the first air inlet channel is communicated with the mounting hole and the first air inlet cavity; the second air inlet channel is communicated with the mounting hole and the second air inlet cavity; the switching assembly is installed in the installation hole, an air channel is arranged in the switching assembly, and a first opening and a second opening are formed in the air channel on the outer surface of the switching assembly; the first opening is communicated with the air inlet hole; when the switching component moves relative to the valve body, the second opening can be communicated with the first air inlet channel or the second air inlet channel.

Optionally, the switching assembly comprises a valve rod and a force application member; the valve rod is positioned in the mounting hole, the air channel is arranged on the valve rod, and the first opening and the second opening are arranged at intervals along the axial direction of the valve rod; the force application part is connected with the valve rod and is positioned on the outer side of the valve body.

Optionally, the switching assembly further includes a first sealing ring, a second sealing ring, a third sealing ring and a fourth sealing ring; the first sealing ring, the second sealing ring, the third sealing ring and the fourth sealing ring are all sleeved on the valve rod and are sequentially spaced along the axial direction of the valve rod; the first sealing ring and the second sealing ring are respectively positioned on two sides of the first opening, and the third sealing ring and the fourth sealing ring are respectively positioned on two sides of the second opening; when the second opening is communicated with the first air inlet channel, an opening formed on the inner surface of the mounting hole by the first air inlet channel is positioned between the third sealing ring and the fourth sealing ring, and an opening formed on the inner surface of the mounting hole by the second air inlet channel is positioned between the second sealing ring and the third sealing ring; the second opening with during the second intake duct intercommunication, the second intake duct is in the opening that forms on the internal surface of mounting hole is located between third sealing washer and the fourth sealing washer, the first intake duct is in the opening that forms on the internal surface of mounting hole is located the fourth sealing washer deviates from one side of third sealing washer.

Optionally, an annular groove is further formed in the valve rod, the annular groove is located between the third sealing ring and the fourth sealing ring, and the second opening is located on the bottom surface of the annular groove.

Optionally, the switching assembly may perform linear motion relative to the valve body, so that the second opening is communicated with the first air inlet channel or the second air inlet channel.

Optionally, be equipped with first limit structure on the valve rod, be equipped with second limit structure on the internal surface of mounting hole, first limit structure with the cooperation of second limit structure, in order to avoid the valve rod is relative the valve body rotates.

Optionally, the first air inlet cavity and the second air inlet cavity are respectively located at two sides of the mounting hole.

Optionally, the lifting valve further comprises a handle assembly, and the handle assembly is rotatably connected to the valve body to realize switching among a first position, a second position and a third position; when the handle assembly rotates from a first position to a second position, the handle assembly can drive the first ascending piston assembly and the second ascending piston assembly to move, so that the first ascending cavity is communicated with the first air inlet cavity, and the second ascending cavity is communicated with the second air inlet cavity; when the handle assembly rotates from the first position to the third position, the handle assembly can drive the first descending piston assembly and the second descending piston assembly to move, so that the first descending cavity is communicated with the first air inlet cavity, and the second descending cavity is communicated with the second air inlet cavity.

In order to solve the technical problem, an embodiment of the present invention further provides a vehicle, including the lifting valve as described in any one of the above.

The embodiment of the utility model provides an among lift valve and the vehicle, through corresponding piston assembly and switching module's setting for the inlet port can with first rise chamber, second rise chamber, first decline chamber and second decline a certain of the chamber intercommunication, and then control the control end of the gas accuse hydraulic valve of connecting in this chamber, with the ascending or decline of the target object that realizes being connected with this gas accuse hydrovalve. The first ascending cavity, the second ascending cavity, the first descending cavity and the second descending cavity can be connected with control ends of the two pneumatic control hydraulic valves so as to control actions of the two pneumatic control hydraulic valves, and the ascending and descending of one target object can be controlled through one pneumatic control hydraulic valve, so that the ascending and descending of the two target objects can be controlled through the ascending valve of the embodiment respectively. Meanwhile, the switching assembly can also select which target object is controlled to ascend and descend, so that the lifting valve can be suitable for different control requirements of users, and the applicability of the lifting valve is improved.

In addition, the lifting valve provided by the embodiment is equivalent to integrating two existing lifting valves together, so that the arrangement of the lifting valve and related management thereof can be simplified, and the operation of a user on the lifting valve can be facilitated. For example, for more than two pneumatic control hydraulic valves, more than two lifting valves are required to control the pneumatic control hydraulic valves respectively, which not only causes difficulty in arrangement of the lifting valves and related pipelines, but also increases operation difficulty of users.

Drawings

Fig. 1 is a schematic structural view of a lift valve according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a lift valve according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of a lift valve according to an embodiment of the present invention;

fig. 4 is a schematic view of a valve body of a lift valve according to an embodiment of the present invention;

fig. 5 is a schematic bottom view of a lift valve according to an embodiment of the present invention;

fig. 6 is a schematic cross-sectional view of a valve body of a lift valve according to an embodiment of the present invention;

fig. 7 is a schematic sectional view of a valve body of a lift valve according to an embodiment of the present invention;

fig. 8 is a schematic cross-sectional view three of a valve body of a lift valve according to an embodiment of the present invention;

fig. 9 is a schematic view of a switching assembly of a lift valve according to an embodiment of the present invention;

fig. 10 is a schematic cross-sectional view of a switching assembly of a lift valve according to an embodiment of the present invention;

fig. 11 is a first schematic view of a handle assembly of a lift valve according to an embodiment of the present invention;

fig. 12 is a second schematic view of a handle assembly of a lift valve according to an embodiment of the present invention;

fig. 13 is a schematic view of a cover of a lift valve according to an embodiment of the present invention.

The reference numerals in the specification are as follows:

100. a lift valve;

1. a valve body; 11. a first rising chamber; 111. a first chamber; 112. a first air outlet hole; 12. a second lifting cavity; 121. a second chamber; 122. a second air outlet; 13. a first descending cavity; 131. a third chamber; 132. a second air outlet; 14. a second descending chamber; 141. a fourth chamber; 142. a fourth air outlet; 15. a first air intake chamber; 151. a first sub-cavity; 152. a second subchamber; 16. a second air intake chamber; 161. a third subchamber; 162. a fourth subchamber; 17. an air inlet; 18a, a first connection hole; 18b, a second connection hole; 18c, a third connecting hole; 18d, a fourth connection hole; 19a, a first vent; 19b, a second vent hole; 19c, a third vent hole; 19d, a fourth vent hole; 20. mounting holes; 30. a first air inlet channel; 40. a second air inlet channel;

2. a first lift piston assembly; 21. a piston rod; 22. a gasket; 23. a spring; 24. a gasket;

3. a second lift piston assembly;

4. a first descending piston assembly;

5. a second descending piston assembly;

6. a switching component; 61. an air duct; 62. a first opening; 63. a second opening; 64. a valve stem; 65. a force application member; 66a, a first sealing ring; 66b, a second seal ring; 66c, a third seal ring; 66d, a fourth seal ring; 67. an annular groove; 68. a first limit structure;

7. a handle assembly; 71. a rotating shaft; 72. briquetting; 73. a handle bar; 74. a handle cap;

8. a cover; 81. a chute.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 to 5, in one embodiment, the lift valve 100 includes a valve body 1, a first lift piston assembly 2, a second lift piston assembly 3, a first lower piston assembly 4, a second lower piston assembly 5, and a switching assembly 6. The valve body 1 is provided with a first ascending cavity 11, a second ascending cavity 12, a first descending cavity 13, a second descending cavity 14, a first air inlet cavity 15, a second air inlet cavity 16 and an air inlet 17. The first ascending piston assembly 2 is arranged in the first ascending cavity 11 to control the connection and disconnection of the first ascending cavity 11 and the first air inlet cavity 15; the second ascending piston assembly 3 is arranged in the second ascending cavity 12 and is used for controlling the connection and disconnection of the second ascending cavity 12 and the second air inlet cavity 16; the first descending piston assembly 4 is arranged in the first descending cavity 13 and used for controlling the connection and disconnection of the first descending cavity 13 and the first air inlet cavity 15; the second descending piston assembly 5 is arranged in the second descending cavity 14 and is used for controlling the connection and disconnection between the second descending cavity 14 and the second air inlet cavity 16; the switching assembly 6 is movably mounted on the valve body 1 for selectively communicating one of the first and second inlet chambers 15, 16 with the inlet aperture 17. In this embodiment, controlling the opening and closing of the two chambers by a piston assembly comprises: the two chambers are transitioned from a communicating state to a disconnected and non-communicating state by the piston assembly, and from a non-communicating state to a communicating state by the piston assembly. When the two chambers are in communication, gas can flow alternately between the two chambers; when the two chambers are not in communication, gas cannot flow between the two alternately.

When the air inlet hole 17 is communicated with the first air inlet cavity 15 and the first air inlet cavity 15 is communicated with the first ascending cavity 11, the air inlet hole 17 is communicated with the first ascending cavity 11; when the air inlet hole 17 is communicated with the first air inlet cavity 15 and the first air inlet cavity 15 is communicated with the first descending cavity 13, the air inlet hole 17 is communicated with the first descending cavity 13; when the air inlet hole 17 is communicated with the second air inlet cavity 16 and the second air inlet cavity 16 is communicated with the second ascending cavity 12, the air inlet hole 17 is communicated with the second ascending cavity 12; when the air intake hole 17 communicates with the second air intake chamber 16 and the second air intake chamber 16 communicates with the second descent chamber 14, the air intake hole 17 communicates with the second descent chamber 14.

When the air inlet 17 is communicated with one of the first ascending cavity 11, the second ascending cavity 12, the first descending cavity 13 and the second descending cavity 14, the control end of the pneumatic control hydraulic valve connected with the cavity can be controlled, and then the ascending or descending of a target object connected with the pneumatic control hydraulic valve is realized.

The lifting valve 100 of the present embodiment can control the operation of two pneumatic control hydraulic valves, and one pneumatic control hydraulic valve can control the ascending and descending of one target object, so that the lifting valve 100 of the present embodiment can control the ascending and descending of two target objects, respectively. Meanwhile, through the switching assembly 6, the ascending and descending of the target object can be controlled selectively, so that the lifting valve 100 can be suitable for different control requirements of users. In addition, the lifting valve 100 provided in this embodiment is equivalent to integrating two existing lifting valves together, which not only simplifies the arrangement of the lifting valve 100 and its related management, but also facilitates the operation of the lifting valve by the user.

As shown in fig. 2 and 3, in an embodiment, the first ascending piston assembly 2 can move up and down in the first ascending cavity 11, so as to control the connection and disconnection between the first ascending cavity 11 and the first air inlet cavity 15; the second ascending piston assembly 3 can move up and down in the second ascending cavity 12, so that the on-off of the second ascending cavity 12 and the second air inlet cavity 16 is controlled; the first descending piston assembly 4 can move up and down in the first descending cavity 13, so that the connection and disconnection of the first descending cavity 13 and the first air inlet cavity 15 are controlled; the second descending piston assembly 5 can move up and down in the second descending cavity 14, and therefore the on-off of the second descending cavity 14 and the second air inlet cavity 16 is controlled. As shown in fig. 1, the lift valve 100 further includes a handle assembly 7, and the up-and-down movement of the four piston assemblies is controlled by the handle assembly 7.

As shown in fig. 2, in an embodiment, the first lift chamber 11 includes a first chamber 111 and a first air outlet 112, and the first lift piston assembly 2 is installed in the first chamber 111 for controlling the connection and disconnection between the first chamber 111 and the first air inlet chamber 15; a first air outlet hole 112 penetrates from the inner surface of the first chamber 111 to the outer surface of the valve body 1, the first air outlet hole 112 is used for connecting with one control end of the air-operated hydraulic valve, wherein the first air outlet hole 112 generally extends to the bottom surface of the valve body 1. When the first air inlet cavity 15 is communicated with the first cavity 111, the first air inlet cavity 15 is communicated with the first air outlet 112, and at this time, if the air inlet hole 17 is communicated with the first air inlet cavity 15, the air of the air source can enter the control end of the air control hydraulic valve through the air passage formed by the air inlet hole 17, the first air inlet cavity 15, the first cavity 111 and the first air outlet hole 112.

Similarly, as shown in fig. 2 and 3, the second lift cavity 12 includes a second chamber 121 and a second air outlet 122, and the second lift piston assembly 3 is installed in the second chamber 121 and is used for controlling the connection and disconnection between the second chamber 121 and the second air inlet cavity 16; the second air outlet 122 penetrates from the inner surface of the second chamber 121 to the outer surface of the valve body 1; the first descending cavity 13 comprises a third chamber 131 and a third air outlet 132, and the first descending piston assembly 4 is installed in the third chamber 131 and used for controlling the connection and disconnection between the third chamber 131 and the first air inlet cavity 15; the third air outlet 132 penetrates from the inner surface of the third chamber 131 to the outer surface of the valve body 1; the second descending cavity 14 comprises a fourth cavity 141 and a fourth air outlet 142, and the second descending piston assembly 5 is installed in the fourth cavity 141 and used for controlling the connection and disconnection between the fourth cavity 141 and the second air inlet cavity 16; the fourth outlet hole 142 penetrates from the inner surface of the fourth chamber 141 to the outer surface of the valve body 1.

As shown in fig. 6 and 7, the valve body 1 may further have a first connection hole 18a, a second connection hole 18b, a third connection hole 18c and a fourth connection hole 18d, wherein the first connection hole 18a is used for communicating the first ascending chamber 11 and the first air inlet chamber 15, the second connection hole 18b is used for communicating the second ascending chamber 12 and the second air inlet chamber 16, the third connection hole 18c is used for communicating the first descending chamber 13 and the first air inlet chamber 15, and the fourth connection hole 18d is used for communicating the second descending chamber 14 and the second air inlet chamber 16. In addition, both the first rising chamber 11 and the first descending chamber 13 may be located above the first intake chamber 15, and both the second rising chamber 12 and the second descending chamber 14 may be located above the second intake chamber 16. At this time, the first connection hole 18a penetrates from the lower surface of the first chamber 111 to the upper surface of the first intake chamber 15, the third connection hole 18c penetrates from the lower surface of the third chamber 131 to the upper surface of the first intake chamber 15, the second connection hole 18b penetrates from the lower surface of the second chamber 121 to the upper surface of the second intake chamber 16, and the fourth connection hole 18d penetrates from the lower surface of the fourth chamber 141 to the upper surface of the second intake chamber 16.

In operation, the first rising piston assembly 2 can open or close the first connection hole 18a to connect or disconnect the first rising chamber 11 and the first chamber 111, and thus the first rising chamber 11 and the first rising chamber 11. Similarly, the second rising piston assembly 3 can be used for realizing the connection or disconnection between the second rising chamber 12 and the second air inlet chamber 16 by opening or closing the second connecting hole 18 b; the first descending piston assembly 4 can be connected or disconnected with the first descending cavity 13 and the first air inlet cavity 15 by opening or closing the third connecting hole 18 c; the second descending piston assembly 5 can be switched on or off the second descending chamber 14 and the second inlet chamber 16 by opening or closing the fourth connecting hole 18 d. The piston assemblies may be arranged in the same manner, and the structure of each piston assembly will be described below by taking the first ascending piston assembly 2 as an example.

As shown in fig. 2, the first rising piston assembly 2 includes a piston rod 21, a packing 22, and a spring 23. Wherein the piston rod 21 is located in the first chamber 111, and the lower end of the piston rod 21 passes through the first connection hole 18a. The sealing gasket 22 is located in the first air inlet cavity 15 and connected to the bottom end of the piston rod 21, and when the piston rod 21 moves upward, the sealing gasket 22 may be driven to approach the first ascending cavity 11, and finally the sealing gasket 22 abuts against the upper surface of the first air inlet cavity 15 to close the first connection hole 18a; when the piston rod 21 moves downward, the sealing gasket 22 can be moved away from the first ascending chamber 11 to open the first connection hole 18a. The spring 23 is compressed between the sealing gasket 22 and the bottom surface of the first air inlet chamber 15, and in an initial state, the piston rod 21 and the sealing gasket 22 can be lifted to the uppermost position under the action of the spring 23, so that the sealing gasket 22 abuts against the upper surface of the first air inlet chamber 15 to close the first connection hole 18a. Wherein, the arrangement of each piston assembly can adopt the prior art.

It should be understood that the first ascending chamber 11, the first descending chamber 13, the first connecting hole 18a, the third connecting hole 18c, the first air inlet chamber 15 and the air inlet hole 17 may constitute a chamber system of the lifting valve 100 in the prior art, and the second ascending chamber 12, the second descending chamber 14, the second connecting hole 18b, the fourth connecting hole 18d, the second air inlet chamber 16 and the air inlet hole 17 may also constitute a chamber system of the lifting valve 100 in the prior art, in this embodiment, the two chamber systems are integrated together, and the operation of which chamber system is selected by the switching assembly 6. In addition, the first rising chamber 11, the second rising chamber 12, the first falling chamber 13, the second falling chamber 14, the first air inlet chamber 15, the second air inlet chamber 16, the air inlet hole 17, the first connection hole 18a, the second connection hole 18b, the third connection hole 18c, and the fourth connection hole 18d may be configured and shaped in accordance with the conventional design.

As shown in fig. 2 and 3, in an embodiment, the valve body 1 is further provided with a first exhaust hole 19a, a second exhaust hole 19b, a third exhaust hole 19c and a fourth exhaust hole 19d. The first exhaust hole 19a penetrates from the outer surface of the valve body 1 to the inner surface of the first chamber 111, the second exhaust hole 19b penetrates from the outer surface of the valve body 1 to the inner surface of the second chamber 121, the third exhaust hole 19c penetrates from the outer surface of the valve body 1 to the inner surface of the third chamber 131, and the fourth exhaust hole 19d penetrates from the outer surface of the valve body 1 to the inner surface of the fourth chamber 141. The gas in the corresponding chamber can be exhausted through the exhaust holes.

As shown in fig. 2, the first rising piston assembly 2 further has a sealing member 24, and the sealing member 24 is fitted over the piston rod 21 for sealing the piston rod 21 with the side surface of the first chamber 111. The first air outlet hole 19a is located above the first air outlet hole 112, and the distance therebetween in the up-down direction is larger than the thickness of the seal member 24. Initially, the piston rod 21 is located at the uppermost position, and at this time, the first vent hole 19a is located below the sealing pad 22, and the first vent hole 19a and the first vent hole 112 may communicate through the first rising chamber 11; in normal operation, the sealing member 24 is located between the first exhaust hole 19a and the first exhaust hole 112, and at this time, the gas in the first inlet chamber 15 enters the space between the sealing member 24 and the bottom surface of the first rising chamber 11 and is exhausted through the first exhaust hole 112. In addition, when the piston rod 21 moves downward to the maximum position, the sealing member 24 is also located between the first discharge hole 19a and the first discharge hole 112. Similarly, other piston assemblies, chambers, exhaust ports and exhaust ports may be similarly designed, and this embodiment will not be described in further detail herein.

As shown in fig. 2 and 3, in an embodiment, the valve body 1 is further provided with a mounting hole 20, a first air inlet channel 30 and a second air inlet channel 40; the first air inlet passage 30 is communicated with the mounting hole 20 and the first air inlet cavity 15; the second air inlet passage 40 communicates with the mounting hole 20 and the second air inlet chamber 16.

As shown in fig. 8 to 10, the switching block 6 is mounted in the mounting hole 20, and an air duct 61 is provided in the switching block 6, and the air duct 61 forms a first opening 62 and a second opening 63 on an outer surface of the switching block 6. Wherein, the first opening 62 is communicated with the air inlet 17, and when the switching assembly 6 moves relative to the valve body 1, the first opening 62 is also communicated with the air inlet 17; in addition, the second opening 63 can be communicated with the first air inlet passage 30 or the second air inlet passage 40 when the switching assembly 6 moves relative to the valve body 1. When the second opening 63 is communicated with the first air inlet channel 30, the first air inlet chamber 15 can be communicated with the air inlet hole 17 through the first air inlet channel 30 and the air duct 61; when the second opening 63 is communicated with the second air inlet passage 40, the second air inlet chamber 16 can be communicated with the air inlet hole 17 through the second air inlet passage 40 and the air duct 61.

In one embodiment, the switching assembly 6 can move linearly relative to the valve body 1 to communicate the second opening 63 with the first inlet passage 30 or the second inlet passage 40.

As shown in fig. 9 and 10, in one embodiment, the switching assembly 6 includes a valve stem 64 and a biasing member 65. The valve stem 64 is located in the mounting hole 20, and the air duct 61 is provided on the valve stem 64. The first opening 62 and the second opening 63 are spaced apart in the axial direction of the valve stem 64. The urging member 65 is connected to the valve rod 64 and is located outside the valve body 1. The user can apply force to the force applying member 65, and the valve rod 64 is driven to move by the force applying member 65. Wherein, the force applying member 65 may be a handwheel, which is more convenient for the user to apply force.

As shown in fig. 9, the switching assembly 6 further includes a first sealing ring 66a, a second sealing ring 66b, a third sealing ring 66c, and a fourth sealing ring 66d, the first sealing ring 66a, the second sealing ring 66b, the third sealing ring 66c, and the fourth sealing ring 66d are all sleeved on the valve rod 64, and the four sealing rings are sequentially arranged at intervals along the axial direction of the valve rod 64, and are all used for achieving the sealing connection between the valve rod 64 and the inner surface of the mounting hole 20. The first seal 66a and the second seal 66b are located on both sides of the first opening 62, and the third seal 66c and the fourth seal 66d are located on both sides of the second opening 63.

After assembly, the first and second seal rings 66a and 66b are always maintained at both sides of the intake port 17. When the second opening 63 communicates with the first air inlet passage 30, the opening of the first air inlet passage 30 formed on the inner surface of the mounting hole 20 is located between the third seal ring 66c and the fourth seal ring 66d, and the opening of the second air inlet passage 40 formed on the inner surface of the mounting hole 20 is located between the second seal ring 66b and the third seal ring 66 c; this prevents gas that passes into the inlet holes 17 from entering the second inlet chamber 16. In addition, when the second opening 63 communicates with the second air inlet duct 40, the opening formed on the inner surface of the second air inlet duct 40 in the installation is located between the third seal ring 66c and the fourth seal ring 66d, and the opening formed on the inner surface of the first air inlet duct 30 in the installation is located on the side of the fourth seal ring 66d away from the third seal ring 66c, so that the air introduced from the air inlet hole 17 can be prevented from entering the first air inlet chamber 15.

In one embodiment, as shown in fig. 9 and 10, the valve rod 64 is further provided with an annular groove 67, the annular groove 67 is located between the third sealing ring 66c and the fourth sealing ring 66d, and the second opening 63 is located at the bottom surface of the annular groove 67, so that the gas flow is more smooth.

As shown in fig. 8, in an embodiment, the valve rod 64 is provided with a first limit structure 68, the inner surface of the mounting hole 20 is provided with a second limit structure, and the first limit structure 68 is matched with the second limit structure to prevent the valve rod 64 from rotating relative to the valve body 1. The first position-limiting structure 68 is a protrusion, and the second position-limiting structure is a groove. Of course, in other embodiments, the first position-limiting structure 68 may be a groove, and the second position-limiting structure may be a bump.

As shown in fig. 8, in an embodiment, the first inlet chamber 15 and the second inlet chamber 16 are respectively located at two sides of the mounting hole 20, and in this case, the first inlet passage 30 and the second inlet passage 40 are also respectively located at two sides of the mounting hole 20, which is more beneficial for opening these chambers and holes on the valve body 1.

As shown in fig. 8, in an embodiment, the first air intake chamber 15 includes a first sub-chamber 151 and a second sub-chamber 152 which are arranged at intervals, the first connection hole 18a penetrates from the bottom surface of the first chamber 111 to the top surface of the first sub-chamber 151, and the third connection hole 18c penetrates from the bottom surface of the third chamber 131 to the top surface of the second sub-chamber 152. The first intake duct 30 includes a first hole penetrating from the inner surface of the mounting hole 20 to communicate with the first chamber 111, and a second hole penetrating from the inner side surface of the first hole to communicate with the third chamber 131. Of course, the first air inlet 30 may also be disposed in other ways to communicate the first sub-chamber 151 and the second sub-chamber 152 with the mounting hole 20.

As shown in fig. 8, the second air intake chamber 16 includes a third sub-chamber 161 and a fourth sub-chamber 162 which are arranged at intervals, the first connection hole 18a penetrates from the bottom surface of the second chamber 121 to the top surface of the third sub-chamber 161, and the third connection hole 18c penetrates from the bottom surface of the fourth chamber 141 to the top surface of the fourth sub-chamber 162. The second inlet duct 40 includes a third hole penetrating from the inner surface of the mounting hole 20 to communicate with the third sub-chamber 161, and a fourth hole penetrating from the inner side surface of the third hole to communicate with the fourth sub-chamber 162. Of course, the second air inlet duct 40 may also adopt other arrangements to communicate the third sub-chamber 161 and the fourth sub-chamber 162 with the mounting hole 20.

As shown in FIG. 1, in one embodiment, the handle assembly 7 is rotatably coupled to the valve body 1, wherein the handle assembly 7 can have a first position, a second position, and a third position when rotated relative to the valve body 1. In fig. 1, the handle 7 is in a first position when the handle 7 is in the intermediate position; when the handle 7 is at the leftmost position, the handle 7 is at the second position; when the handle 7 is in the rightmost position, the handle 7 is in the third position.

When the handle assembly 7 rotates from the first position to the second position, the handle assembly 7 can drive the first ascending piston assembly 2 and the second ascending piston assembly 3 to move, so that the first ascending cavity 11 is communicated with the first air inlet cavity 15, and the second ascending cavity 12 is communicated with the second air inlet cavity 16; when the handle assembly 7 rotates from the first position to the third position, the handle assembly 7 can drive the first descending piston assembly 4 and the second descending piston assembly 5 to move, so that the first descending cavity 13 is communicated with the first air inlet cavity 15, and the second descending cavity 14 is communicated with the second air inlet cavity 16; when the handle assembly 7 is located at the first position, the first ascending cavity 11 and the first descending cavity 13 are not communicated with the first air inlet cavity 15, and the second ascending cavity 12 and the second descending cavity 14 are not communicated with the second air inlet cavity 16.

As shown in fig. 11 and 12, handle assembly 7 includes a rotating shaft 71, a pressing piece 72, and a handle lever 73; the rotating shaft 71 is rotatably connected with the valve body 1, the pressing block 72 is arranged on the rotating shaft 71, the handle rod 73 is arranged on the rotating shaft 71, and the handle rod 73 can be rotated between the second position and the third position by pulling the handle rod 73, so that the rotating shaft 71 can drive the pressing block 72 to rotate. When the rotating shaft 71 rotates clockwise (at this time, the handle lever 73 rotates from the first position to the second position), the pressing block 72 can press the first rising piston assembly 2 and the second rising piston assembly 3 to move downward, so that the first rising cavity 11 is communicated with the first air inlet cavity 15, and the second rising cavity 12 is communicated with the second air inlet cavity 16; when the rotating shaft 71 rotates counterclockwise (at this time, the handle lever 73 rotates from the first position to the third position), the pressing block 72 may press the first and second descending piston assemblies 4 and 5 to move downward, so that the first descending cavity 13 is communicated with the first air inlet cavity 15, and the second descending cavity 14 is communicated with the second air inlet cavity 16.

As shown in fig. 13, in an embodiment, the lift valve 100 further includes a cover 8, the cover 8 is disposed on the valve body 1 and located on one side of the upper surface of the valve body 1, and the cover 8 and the valve body 1 enclose a receiving space, and each piston assembly is located in the receiving space. In addition, the cover 8 is provided with a sliding groove 81, one end of the handle assembly 7 is positioned in the accommodating space, and the other end of the handle assembly extends out of the accommodating space from the sliding groove 81, so that the handle assembly is convenient for a user to operate.

As shown in fig. 12, the handle assembly 7 further includes a handle sleeve 74, a handle cap 75, and a handle spring. The handle sleeve 74 is fitted over the handle stem 73, the handle cap 75 is secured to the end of the handle stem 73 facing away from the axis of rotation 71, and the handle spring is compressed between the handle cap 75 and the handle sleeve 74. Wherein, handle cover 74 is provided with a projection 741, the inner surface of chute 81 is provided with three gaps, and the three gaps are all upwards penetrated to the outer surface of cover 8. When the user does not apply force, the handle sleeve 74 is positioned at the lowest end under the action of the spring 23, the projection 741 is positioned in one of the notches, and the handle lever 73 can be prevented from rotating by the cooperation of the projection 741 and the notch. When it is desired to rotate the handle, the handle sleeve 74 may be initially forced upwardly to disengage the projection 741 from the notch, and then the handle lever 73 may be operated to rotate. The three notches correspond to three positions respectively, and when the projection 741 is matched with the first notch, the handle assembly 7 is located at the first position; when the projection 741 is engaged with the second notch, the handle assembly 7 is in the second position; when the projection 741 is engaged with the third indentation, the handle assembly 7 is in the third position. It will be appreciated that in other embodiments, the projection 741 may be provided on the cover 8 with a notch provided in the handle sleeve 74.

In addition, be equipped with third limit structure on the shroud 8, be equipped with fourth limit structure on the handle components 7, through the cooperation of third limit structure and fourth limit structure, can inject the biggest turned angle of handle components 7. Wherein the third limiting structure may be two stoppers arranged in the cover 8, and the fourth limiting structure may be the pressing block 72 itself. When the rotor rotates clockwise, the pressing block 72 can be abutted against one of the stoppers to limit the maximum angle of clockwise rotation of the rotating shaft 71; when the rotor rotates counterclockwise, the pressing piece 72 may interfere with another stopper to limit the maximum angle of counterclockwise rotation of the rotating shaft 71.

The embodiment of the utility model provides a still provide a vehicle, this vehicle has used above-mentioned arbitrary embodiment lift valve, wherein, the vehicle can be the vehicle that needs carry out the self-discharging such as dregs car.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims (10)

1. A lifting valve is characterized by comprising a valve body, a first lifting piston assembly, a second lifting piston assembly, a first descending piston assembly, a second descending piston assembly and a switching assembly;

the valve body is provided with a first ascending cavity, a second ascending cavity, a first descending cavity, a second descending cavity, a first air inlet cavity, a second air inlet cavity and an air inlet hole;

the first ascending piston assembly is arranged in the first ascending cavity and used for controlling the connection and disconnection of the first ascending cavity and the first air inlet cavity;

the second ascending piston assembly is arranged in the second ascending cavity and used for controlling the connection and disconnection of the second ascending cavity and the second air inlet cavity;

the first descending piston assembly is arranged in the first descending cavity and used for controlling the connection and disconnection of the first descending cavity and the first air inlet cavity;

the second descending piston assembly is arranged in the second descending cavity and used for controlling the second descending cavity and the second air inlet cavity to be connected and disconnected;

the switching assembly is movably mounted on the valve body so as to selectively communicate one of the first air inlet cavity and the second air inlet cavity with the air inlet hole.

2. The lift valve of claim 1, wherein the valve body further comprises a mounting hole, a first inlet channel and a second inlet channel;

the first air inlet channel is communicated with the mounting hole and the first air inlet cavity;

the second air inlet channel is communicated with the mounting hole and the second air inlet cavity;

the switching assembly is installed in the installation hole, an air channel is arranged in the switching assembly, and a first opening and a second opening are formed in the air channel on the outer surface of the switching assembly;

the first opening is communicated with the air inlet hole;

when the switching component moves relative to the valve body, the second opening can be communicated with the first air inlet channel or the second air inlet channel.

3. The lift valve of claim 2, wherein the switching assembly includes a valve stem and a force applying member;

the valve rod is positioned in the mounting hole, the air channel is arranged on the valve rod, and the first opening and the second opening are arranged at intervals along the axial direction of the valve rod;

the force application part is connected with the valve rod and is positioned on the outer side of the valve body.

4. The lift valve of claim 3, wherein the switching assembly further comprises a first seal, a second seal, a third seal, and a fourth seal;

the first sealing ring, the second sealing ring, the third sealing ring and the fourth sealing ring are sleeved on the valve rod and are sequentially spaced along the axial direction of the valve rod;

the first sealing ring and the second sealing ring are respectively positioned at two sides of the first opening, and the third sealing ring and the fourth sealing ring are respectively positioned at two sides of the second opening;

when the second opening is communicated with the first air inlet channel, an opening formed on the inner surface of the mounting hole by the first air inlet channel is positioned between the third sealing ring and the fourth sealing ring, and an opening formed on the inner surface of the mounting hole by the second air inlet channel is positioned between the second sealing ring and the third sealing ring;

the second opening with during the second intake duct intercommunication, the second intake duct is in the opening that forms on the internal surface of mounting hole is located between third sealing washer and the fourth sealing washer, the first intake duct is in the opening that forms on the internal surface of mounting hole is located the fourth sealing washer deviates from one side of third sealing washer.

5. The lift valve of claim 4, further comprising an annular groove in the valve stem, the annular groove being located between the third seal and the fourth seal, the second opening being located in a bottom surface of the annular groove.

6. A lift valve according to any of claims 3 to 5, wherein the switch assembly is linearly movable relative to the valve body to communicate the second opening with the first inlet passage or the second inlet passage.

7. A lift valve according to claim 6, wherein a first stop structure is provided on the valve stem and a second stop structure is provided on an inner surface of the mounting bore, the first stop structure cooperating with the second stop structure to prevent rotation of the valve stem relative to the valve body.

8. The lift valve of claim 2, wherein the first inlet chamber and the second inlet chamber are located on opposite sides of the mounting hole.

9. The lift valve of claim 1, further comprising a handle assembly rotatably coupled to the valve body to effect switching between the first position, the second position, and the third position;

when the handle assembly rotates from a first position to a second position, the handle assembly can drive the first ascending piston assembly and the second ascending piston assembly to move, so that the first ascending cavity is communicated with the first air inlet cavity, and the second ascending cavity is communicated with the second air inlet cavity;

when the handle assembly rotates from the first position to the third position, the handle assembly can drive the first descending piston assembly and the second descending piston assembly to move, so that the first descending cavity is communicated with the first air inlet cavity, and the second descending cavity is communicated with the second air inlet cavity.

10. A vehicle comprising a lift valve according to any one of claims 1 to 9.

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