CN217429919U

CN217429919U - Switch valve and base station with same

Info

Publication number: CN217429919U
Application number: CN202220727222.3U
Authority: CN
Inventors: 王强; 韦明祥; 李德来; 王晨阳; 张旭东; 郑军妹
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2022-09-16
Anticipated expiration: 2032-03-30

Abstract

The utility model relates to a switch valve and a base station with the switch valve, wherein the switch valve comprises a connecting pipe, at least one part of which is a flexible pipe section which can be deformed; the pushing piece is positioned on the peripheral side of the soft pipe section, is arranged to be close to or far away from the soft pipe section, and can enable the soft pipe section to be locally deformed to block an internal flow passage of the soft pipe section when moving towards the direction close to the soft pipe section; the inner part of the shell is provided with a cavity, and at least part of the soft pipe section and the pushing piece are positioned in the cavity; and an inlet of the vacuum pump can be respectively communicated with an outlet of the connecting pipe and the cavity, and a flow channel of the flexible pipe section is in an open state when the pushing piece moves towards the direction far away from the flexible pipe section and the negative pressure value of the inner cavity of the connecting pipe is not less than the negative pressure value of the inner cavity of the cavity. The situation that the flexible pipe section cannot be opened due to overlarge negative pressure in the flexible pipe section is prevented, and the opening reliability of the flexible pipe section is improved.

Description

Switch valve and base station with same

Technical Field

The utility model belongs to the control valve field, concretely relates to ooff valve and have basic station of this ooff valve.

Background

Current cleaners are used to draw into their interior a mixture of dirt, etc. mixed with moisture on the floor. In order to timely discharge garbage in an inner cavity of a cleaning machine or clean a brush head of the cleaning machine and a storage cavity of a separation module, a base station is generally arranged, for example, a dust collecting conduction structure and a mobile cleaning system with the dust collecting conduction structure are disclosed in the Chinese patent application, namely, the invention patent application No. CN202010287258.X (application publication No. CN111419124A) discloses a dust collecting conduction structure which is used for automatically discharging dust collected in a mobile robot and comprises a dust discharging port, wherein the dust discharging port is arranged on the side part or the bottom part of the mobile robot and is communicated with the interior of a dust box arranged in the mobile robot; the dust collection port is arranged on the base and used for receiving dust discharged from the dust discharge port, and the base is used for receiving the mobile robot; the mobile robot comprises a dust exhaust port, a dust suction port, a telescopic connecting channel and a dust exhaust port, wherein the dust exhaust port is opposite to the dust suction port in a dust exhaust state of the mobile robot, and the dust exhaust port is communicated with the dust suction port through the telescopic connecting channel. The connecting channel between the dust collection port and the dust collection device is usually provided with an electric ball valve to control the on-off of the connecting channel, and the position provided with the electric ball valve is easy to have a clean dead angle and cause blockage.

In order to solve the above technical problems, for example, in the chinese utility model "a base station for a cleaning machine and a cleaning machine system having the same" previously applied by the applicant, patent No. ZL202120707784.7 (publication No. CN215534021U) discloses that a flexible pipe section capable of being deformed is adopted as a connecting pipe, and a pushing member moves in a direction approaching or departing from the flexible pipe section to block or open a flow passage inside the flexible pipe section, but the flexible pipe section may be crushed by a large negative pressure and cannot be opened.

Therefore, further improvements to existing on-off valves are needed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a first technical problem that will solve is to above-mentioned prior art's current situation, provides a switch valve that soft pipeline section internal flow channel is reliably opened.

The utility model discloses the second technical problem that will solve provides one kind and enables bulky rubbish and pass through in order to reach the basic station that reduces the pipe blockage risk purpose.

The utility model provides a technical scheme that above-mentioned first technical problem adopted does: an on-off valve comprising:

the connecting pipe is at least partially a flexible pipe section which can be deformed;

the pushing piece is positioned on the peripheral side of the soft pipe section, is arranged to be close to or far away from the soft pipe section, and can locally deform the soft pipe section to block an internal flow channel of the soft pipe section when moving towards the direction close to the soft pipe section;

it is characterized by also comprising:

the inner part of the shell is provided with a cavity, and at least part of the soft pipe section and the pushing piece are positioned in the cavity;

and the inlet of the vacuum pump can be respectively communicated with the outlet of the connecting pipe and the cavity, and the flow channel of the flexible pipe section is in an open state when the pushing piece moves towards the direction far away from the flexible pipe section and the negative pressure value in the inner cavity of the connecting pipe is not less than the negative pressure value in the cavity.

The negative pressure value refers to the value of negative pressure, namely, if the negative pressure value of the inner cavity of the connecting pipe is-10 Pa, the negative pressure value of the cavity is-10 Pa or < -10 Pa.

The flexible tube section may be partially located in the cavity (e.g. the peripheral wall of the flexible tube section is partially located outside the cavity) or may be entirely located in the cavity, but preferably the flexible tube section is located in the cavity, and the side wall of the flexible tube section facing away from the pushing member is connected to the corresponding inner wall of the housing.

The connecting pipe can be in the form of a whole flexible pipe section or a local flexible pipe section, but preferably, the connecting pipe further comprises two rigid pipe sections communicated with the flexible pipe section, the rigid pipe sections are located outside the shell, and the flexible pipe sections are located between the two rigid pipe sections.

The pushing member can be manually driven to move back and forth, or the driving mechanism can be used for driving the pushing member to move actively, but from the viewpoint of operational reliability and convenience, the flexible pipe joint further comprises a driving mechanism for driving the pushing member to move towards the direction close to or away from the flexible pipe section, and the power output end of the driving mechanism is in driving connection with the pushing member.

The driving mechanism has various structural forms, and can be in the form of a push rod motor only or in the form of matching of the motor and a transmission assembly, but preferably, the driving mechanism comprises the motor and the transmission assembly, the transmission assembly is positioned in the cavity, the power output end of the motor is in driving connection with the power input end of the transmission assembly, and the power output end of the transmission assembly is in driving connection with the pushing piece.

The transmission assembly may be in a form of a gear and rack combination (i.e., the gear is mounted on the output shaft of the motor, the rack extends along the moving direction of the pushing member and is engaged with the gear, and the rack is connected with the pushing member), or in a form of a screw and nut combination, but preferably, the transmission assembly includes a screw and a nut, the screw extends along the moving direction of the pushing member, is connected with the output shaft of the motor and rotates around the axis thereof under the driving of the motor, and the nut is in threaded connection with the screw and is fixed relative to the pushing member.

The nut and the pushing member are fixed relatively in various manners, and may be in a form of fixedly connecting the nut and the pushing member, for example, (the nut and the pushing member are in an integral form, or in a form of fixedly connecting the nut and the pushing member by using a buckle or a screw), or in other manners.

The direction of movement of the pushing member may be perpendicular to the flexible tube section or may intersect the flexible tube section, but preferably the direction of movement of the pushing member is perpendicular to the flexible tube section.

In order to store the gas exhausted through the connecting pipe, the gas storage tank is also provided with an inlet communicated with the outlet of the connecting pipe in a fluid mode and an outlet communicated with the inlet of the vacuum pump.

The utility model provides a technical scheme that above-mentioned second technical problem adopted does: the base station with the switch valve is characterized by further comprising a base and a sewage draining part communicated with the outlet of the connecting pipe in a fluid mode, wherein the connecting pipe is located on the base.

One of the forms adopted by the blowdown member is: the blowdown spare is for setting up the dirty case of collection on the base.

The second form adopted by the blowdown part is as follows: the blowdown spare is the blow off pipe that is linked together with the sewer, the blow off pipe sets up on the base.

Compared with the prior art, the utility model has the advantages of: the shell of the switch valve is internally provided with a cavity, at least part of the soft pipe section and the pushing part are positioned in the cavity, when the pushing part moves towards the direction far away from the soft pipe section, the pushing part can be separated from the state of being in contact with the soft pipe section, at the moment, gas in the cavity of the cavity and the inner cavity of the connecting pipe is sucked through the vacuum pump, so that the negative pressure value in the inner cavity of the connecting pipe is larger than or equal to the negative pressure value in the cavity, the soft pipe section deforms under the action of the elasticity of the soft pipe section and restores to enable the flow channel of the soft pipe section to be in an open state, the pressure in the inner cavity of the connecting pipe and the cavity is balanced, the situation that the soft pipe section cannot be opened due to overlarge negative pressure in the soft pipe section is prevented, and the opening reliability of the soft pipe section is improved. In addition, the caliber of the flexible pipe section is not limited, large-size garbage can pass through the flexible pipe section conveniently, and the risk of blockage of the flexible pipe section is reduced.

Drawings

FIG. 1 is a partial schematic structural view of a flow passage inside a flexible pipe section in a closed state in the switching valve of the present embodiment;

FIG. 2 is a schematic structural diagram of the on-off valve of the present embodiment in which the internal flow passage of the flexible pipe section is in an open state;

FIG. 3 is a cross-sectional view of FIG. 1;

fig. 4 is a sectional view of a part of the structure of the base station of the present embodiment.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 4, the on-off valve of the present embodiment includes a connection pipe 1, a push member 2, a housing 3, a driving mechanism 4, a vacuum pump 5, and a storage tank 6.

As shown in fig. 1 to 3, at least a part of the connecting pipe 1 is a flexible pipe section 11 capable of deforming; specifically, the connecting pipe 1 includes a flexible pipe section 11 and two rigid pipe sections 12 connected to the flexible pipe section 11, and the flexible pipe section 11 is located between the two rigid pipe sections 12.

As shown in fig. 2 and 3, the housing 3 has a cavity 30 therein, and the housing 3 is opened with an air outlet 301 communicating with the cavity 30. The flexible tube segment 11 is located in the cavity 30, and a side wall of the flexible tube segment 11 facing away from the pushing member 2 is connected with a corresponding inner wall of the shell 3. While the rigid pipe section 12 is located outside the housing 3. The pushing member 2 is located in the cavity 30 and around the flexible pipe segment 11, and can be driven by the driving mechanism 4 to move close to or away from the flexible pipe segment 11, and the moving direction of the pushing member 2 of this embodiment is perpendicular to the flexible pipe segment 11. When the pushing member 2 moves towards the direction close to the flexible pipe section 11, the flexible pipe section 11 can be locally deformed to block the internal flow passage 111 of the flexible pipe section 11.

As shown in fig. 2, the inlet 51 of the vacuum pump 5 is connected to the outlet of the connecting pipe 1 and the air outlet 301 of the cavity 30 through pipes. The outlet of the connecting pipe 1 is connected to the inlet 51 of the vacuum pump 5 through the storage tank 6, and specifically, the storage tank 6 has an inlet 61 in fluid communication with the outlet of the connecting pipe 1 and an outlet 62 in communication with the inlet 51 of the vacuum pump 5. Therefore, the vacuum pump 5 can suck the air in the cavity 30 and the cavity of the connecting pipe 1, and negative pressure is generated in the flexible pipe section due to the change of the flow rate, so that negative pressure is formed in the cavity of the connecting pipe 1 and the cavity 30. In the state that the pushing member 2 moves away from the flexible pipe section 11 to be in non-contact with the flexible pipe section 11, and in the state that the negative pressure value in the inner cavity of the connecting pipe 1 is greater than or equal to the negative pressure value in the cavity 30 (i.e. in the state that the absolute value of the negative pressure value in the inner cavity of the connecting pipe 1 is not greater than the absolute value of the negative pressure value in the cavity 30), the flexible pipe section 11 can be restored to the state that the internal flow channel 111 of the flexible pipe section 11 is in an open state under the self-elastic action, in the embodiment, preferably, the negative pressure in the inner cavity of the connecting pipe 1 is equal to the negative pressure in the cavity, i.e. the pressures in the inner cavity and the cavity of the connecting pipe 1 are balanced, the situation that the flexible pipe section cannot be opened due to the excessive negative pressure in the flexible pipe section is prevented, and the reliability of opening of the flexible pipe section is improved.

As shown in fig. 1 to 3, the power output end of the driving mechanism 4 is in driving connection with the pushing member 2. The driving mechanism 4 comprises a motor 41 and a transmission assembly, the transmission assembly is located in the cavity 30, a power output end of the motor 41 is in driving connection with a power input end of the transmission assembly, and a power output end of the transmission assembly is in driving connection with the pushing member 2. The transmission assembly of the present embodiment includes a screw rod 42 and a nut 43, and the extension direction of the output shaft of the motor 41 is consistent with the length direction of the screw rod 42. The screw 42 in this embodiment extends along the moving direction of the pushing member 2, is connected with the output shaft of the motor 41, and is driven by the motor 41 to rotate around the axis thereof, and the nut 43 is connected to the screw 42 in a threaded manner and is fixed relative to the pushing member 2. In order to realize the relative fixation of the nut 43 and the pushing member 2, the pushing member 2 is provided with a slot 21 for the screw rod 42 to penetrate through, and the pushing member 2 is provided with a mounting groove 22 communicated with the slot 21 for the nut 43 to be limited therein. Thus, when the nut 43 is limited in the mounting groove 22, the nut 43 moves back and forth along the screw rod 42 to drive the pushing member 2 to move back and forth synchronously.

As shown in fig. 4, the base station of the present embodiment includes a base 8, a switch valve and a drainage member, the switch valve is disposed on the base 8, the drainage member is in fluid communication with the outlet of the connection pipe 1 of the switch valve, and specifically, the outlet of the connection pipe 1 is in fluid communication with the storage tank 6 and the drainage member respectively. The drain member of the present embodiment is a drain tank 81 provided on the base 8. In addition, the drain may also be a drain (not shown) in communication with a sewer, the drain being disposed on the base 8.

The term "fluid communication" as used herein refers to a spatial relationship between two components or portions (hereinafter collectively referred to as a first portion and a second portion), i.e., a fluid (gas, liquid or a mixture of both) can flow along a flow path from the first portion or/and be transported to the second portion, and may be directly communicated between the first portion and the second portion, or indirectly communicated between the first portion and the second portion via at least one third member, which may be a fluid passage such as a pipe, a channel, a duct, a flow guide, a hole, a groove, or a chamber allowing the fluid to flow therethrough, or a combination thereof.

Claims

1. An on-off valve comprising:

a connecting pipe (1) which is at least partially a flexible pipe section (11) capable of deforming;

the pushing piece (2) is positioned on the peripheral side of the flexible pipe section (11), can be close to or far away from the flexible pipe section (11), and can enable the flexible pipe section (11) to be locally deformed to block an internal flow passage (111) of the flexible pipe section (11) when moving towards the direction close to the flexible pipe section (11);

it is characterized by also comprising:

a housing (3) having a cavity (30) therein, at least part of the flexible tube segment (11) and the pusher (2) being located within the cavity (30);

and an inlet (51) of the vacuum pump (5) can be respectively communicated with an outlet of the connecting pipe (1) and the cavity (30), and the flow channel (111) of the flexible pipe section (11) is in an open state when the pushing piece (2) moves towards the direction far away from the flexible pipe section (11) and the negative pressure value of the inner cavity of the connecting pipe (1) is more than or equal to the negative pressure value in the cavity (30).

2. The switching valve according to claim 1, wherein: the flexible pipe section (11) is positioned in the cavity (30), and the side wall of the flexible pipe section (11) departing from the pushing piece (2) is connected with the corresponding inner wall of the shell (3).

3. The switching valve according to claim 1, wherein: the connecting pipe (1) further comprises hard pipe sections (12) communicated with the soft pipe sections (11), the hard pipe sections (12) are located outside the shell (3), the number of the hard pipe sections (12) is two, and the soft pipe sections (11) are located between the two hard pipe sections (12).

4. The switching valve according to claim 1, wherein: the flexible pipe joint is characterized by further comprising a driving mechanism (4) used for driving the pushing member (2) to move towards the direction close to or far away from the flexible pipe section (11), and a power output end of the driving mechanism (4) is in driving connection with the pushing member (2).

5. The switching valve according to claim 4, wherein: the driving mechanism (4) comprises a motor (41) and a transmission assembly, the transmission assembly is located in the cavity (30), a power output end of the motor (41) is in driving connection with a power input end of the transmission assembly, and a power output end of the transmission assembly is in driving connection with the pushing piece (2).

6. The switching valve according to claim 5, wherein: the transmission assembly comprises a screw rod (42) and a nut (43), the screw rod (42) extends along the movement direction of the pushing piece (2), is connected with an output shaft of the motor (41) and rotates around the axis of the screw rod under the driving of the motor (41), and the nut (43) is in threaded connection with the screw rod (42) and is relatively fixed with the pushing piece (2).

7. The switching valve according to claim 6, wherein: the pushing piece (2) is provided with a slot (21) for the screw rod (42) to penetrate through, and the pushing piece (2) is provided with a mounting groove (22) communicated with the slot (21) for the nut (43) to be limited in.

8. The switching valve according to claim 1, wherein: the movement direction of the pushing piece (2) is vertical to the soft pipe section (11).

9. The switching valve according to any one of claims 1 to 8, wherein: the vacuum pump further comprises a storage tank (6), wherein the storage tank (6) is provided with an inlet (61) communicated with the outlet of the connecting pipe (1) in a fluid mode and an outlet (62) communicated with the inlet (51) of the vacuum pump (5).

10. A base station having a switch valve according to any one of claims 1 to 9, further comprising a base (8) and a waste in fluid communication with an outlet of the connecting pipe (1), the connecting pipe (1) being located on the base (8).

11. The base station of claim 10, wherein: the sewage discharging part is a sewage collecting box (81) arranged on the base (8).

12. The base station of claim 10, wherein: the sewage discharging piece is a sewage discharging pipe communicated with a sewer, and the sewage discharging pipe is arranged on the base (8).