CN110778736A

CN110778736A - Safety throttling ball valve

Info

Publication number: CN110778736A
Application number: CN201910905484.7A
Authority: CN
Inventors: 赵金燕
Original assignee: Ningbo Haishu Guangyun Electromechanical Engineering Co Ltd
Current assignee: Ningbo Haishu Guangyun Electromechanical Engineering Co Ltd
Priority date: 2019-09-24
Filing date: 2019-09-24
Publication date: 2020-02-11

Abstract

The invention discloses a safety throttling ball valve, which comprises a valve body 1, wherein a valve cavity is arranged in the valve body 1, the valve cavity is provided with a water inlet 81 and a water outlet 82, a valve core 2 is arranged in the valve body 1, and a control device is arranged on the valve core 2, and the safety throttling ball valve is characterized in that: a horizontally penetrating throttling channel 21 is arranged in the valve core 2, the control device controls the throttling channel 21 to be communicated with the water inlet 81 and the water outlet 82, a time-limited throttling device is arranged in the throttling channel 21 and comprises a first rack 53 and a second rack 54, and the first rack 53 and the second rack 54 are connected in a sealing manner through permanent magnets to close the throttling channel 21; the control device controls the first rack 53 and the second rack 54 to separate and open the throttling channel 21; the invention can effectively throttle, prolong the service life of the sealing element and is provided with the locking mechanism to prevent the switch from being opened by accidental touch.

Description

Safety throttling ball valve

Technical Field

The invention relates to the technical field of control valves, in particular to a safety throttling ball valve.

Background

The ball valve is a valve which drives a spherical valve core to rotate around the axis of a valve rod through the valve rod, and is provided with a valve body for opening and closing a flow path, a ball seat arranged in a mode of surrounding the valve body and a pressing ring arranged on the ball seat; ball valves can also be used for fluid regulation and control, mainly for cutting off or connecting media in pipelines, and are widely used in various industries.

The ball valve provided at present can not realize throttling and flow control, and can not freely adjust a throttling mode and a common mode, people usually only need a certain large-flow water flow at first, but do not have high utilization rate to the water flow of the second half section, thereby causing great waste.

In certain situations and in certain water outlet devices, the switch is often accidentally activated by a person causing a great deal of accidental injury, and a safety lock is needed to prevent such accidents.

Disclosure of Invention

The invention mainly aims to provide a safe throttling ball valve which is used for solving the problems that the ball valve in the prior art cannot realize throttling and water is saved in the rear half section of a pressing type water outlet, and the problem that a switch is opened due to accidental touch is prevented.

In order to achieve the above purposes, the technical scheme adopted by the invention is as follows: the utility model provides a safe throttling ball valve, includes the valve body, be equipped with the valve pocket in the valve body, the valve pocket is equipped with water inlet and delivery port, be equipped with the ball valve in the valve body, be equipped with controlling means, its characterized in that on the ball valve: a horizontally-penetrating throttling channel is arranged in the valve core, the control device controls the throttling channel to be communicated with the water inlet and the water outlet, a time-limited throttling device is arranged in the throttling channel and comprises a first rack and a second rack, and the first rack and the second rack are connected in a sealing manner through a permanent magnet to seal the throttling channel; the control device controls the first rack and the second rack to be separated to open the throttling channel; the valve body is provided with a locking mechanism for preventing the control device from operating, and the locking mechanism limits the operation of the control device through the clamping groove of the clamping block.

As an improvement, a first throttling hole is arranged in the throttling channel, a first insertion groove and a second insertion groove which are communicated with the side face of the first throttling hole are arranged in the valve core, and the first insertion groove and the second insertion groove are positioned in the same plane and are vertical to the length direction of the first throttling hole; the first rack is connected in the first inserting groove in a sliding manner, and the second rack is connected in the second inserting groove in a sliding manner; the lower end of the first rack is provided with a first permanent magnet, the upper end of the second rack is provided with a second permanent magnet, and the magnetic poles of the first permanent magnet and the second permanent magnet are opposite.

As an improvement, the control device comprises a screw rod, a steering gear, a first spring, a first gear, a second gear and a first rack, a third insertion groove communicated with the axis of the first gear is arranged in the valve core, and the third insertion groove is positioned above the main flow hole and is vertical to the length direction of the main flow hole; the screw rod is connected in the third inserting groove in a sliding mode, and a steering gear fixedly connected with the top end of the screw rod is arranged at the top end of the screw rod; the lower end part of the screw rod is in threaded connection with the first gear, and the screw rod can enable the first gear to rotate positively and negatively through up-and-down sliding; the lower end of the third inserting groove is provided with a first spring which forces the screw rod to move upwards; a second gear meshed with the first rack is arranged on the right side of the second inserting groove, and the second gear can drive the first rack to slide up and down through rotation; and a first gear vertically meshed with the second gear is arranged on the right side of the second gear.

As an improvement, a sealing element is arranged in the valve body and is positioned between the valve body and the valve core, and the sealing element is used for sealing a gap between the valve core and the valve body.

As an improvement, a second throttling hole is arranged in the throttling channel, a throttling valve is arranged in the second throttling hole, and the throttling valve comprises a throttling valve core, a drainage channel, a second spring and a throttling valve seat; a throttle valve hole which penetrates through the second throttle hole in the length direction is formed in the throttle valve seat; the throttle valve core is connected to the left side of the throttle valve seat in a sliding manner, and a second spring for forcing the throttle valve core to move leftwards is arranged on the left side of the throttle valve seat; and when the throttling valve core slides to the bottom rightwards, liquid can flow into the valve cavity from the left opening of the drainage channel.

As an improvement, the locking mechanism comprises a screw rod, a third spring, a fourth spring, a first slider, a second slider, a third slider and an obstructing inclined block, a clamping groove matched with the obstructing inclined block in size is arranged in the screw rod, the clamping groove and the obstructing inclined block are located on the same plane and perpendicular to the length direction of the screw rod, the second slider is arranged on the right side of the obstructing inclined block, the fourth spring forcing the second slider to move leftwards is arranged on the right side of the second slider, the third slider and the first slider are arranged at the upper end and the lower end of the second slider respectively, and the third spring forcing the first slider to move upwards is arranged at the lower end of the first slider.

As an improvement, a clamping groove is formed in the left side of the first insertion groove and used for limiting the first rack to slide downwards, and clamping grooves are formed in the left side and the right side of the second insertion groove and used for limiting the second rack to slide upwards.

As an improvement, the screw rod is connected with the valve core spline in a hinged mode, and the screw rod can slide up and down in the third inserting groove under the pressure of external force.

The time-limited throttling device consisting of the first rack and the second rack has the function of time-limited sealing throttling channels, the permanent magnets at the lower end of the first rack and the upper end of the second rack are controlled to be opened and closed through the relative distance between the permanent magnets, and when the first rack slides to the bottom, the permanent magnets at the upper end of the second rack can drive the second rack to move upwards under the action of magnetic force, so that a certain time delay effect can be caused in the interval; the screw rod is pressed downwards to open the throttling channel, and meanwhile, the throttling channel is automatically closed after being opened for a certain time through the cooperation of the first spring and the screw rod; the sealing element is tightly attached to the valve core and the valve body, so that the sealing performance is greatly improved; the throttle valve arranged in the second throttle hole can output larger water quantity when the throttle passage is in an open state, and output smaller water quantity after the throttle passage is closed, so that the waste of unnecessary water is reduced; the locking mechanism reduces accidents caused by accidental touch of people by increasing operation steps; meanwhile, the screw rod is matched with the valve core through a spline, and the bottom of the screw rod is in threaded connection with the first gear connecting part, so that the control screw rod can simultaneously control the valve core to open the communication between the throttling channel or the main flow channel and the water inlet and the water outlet, and open and close the throttling channel inward extending device.

Compared with the prior art, the invention has the advantages that:

1. the closing and opening of the first rack and the second rack are controlled by the attraction of the magnetic force between the permanent magnets, and the permanent magnets have certain time delay performance and can be used for a user for a longer time.

2. The safety throttle valve is provided with a throttle passage, a first throttle hole and a second throttle hole are respectively arranged in the throttle passage, and the two throttle holes respectively have a time-delay closing effect and a throttling effect.

3. The sealing element is tightly attached between the valve core and the valve body, so that the sealing property is greatly improved.

4. The sealing device has certain time delay, so that the use time of a user is prolonged when the pressing type hand washing is used.

5. The throttle valve can effectively restrain the subsequent water flow after the channel is closed by the sealing mechanism, and waste caused by subsequent unnecessary water flow is avoided.

6. The locking mechanism can effectively prevent unnecessary accidents caused by people touching the control device accidentally.

7. The clamping grooves at the first inserting groove and the second inserting groove can limit the movement positions of the first rack and the second rack, so that the first rack and the second rack cannot exceed the movement range of the first rack and the second rack along with the action of magnetic force.

8. The screw rod can slide up and down through the spline to control the opening of the throttle channel switch, and meanwhile, the screw rod can be rotated to control the communication of the main flow channel or the interception channel with the water inlet and the water outlet.

Drawings

FIG. 1 is a schematic view of the safety throttle valve of the present invention in an open state;

FIG. 2 is a schematic view of the safety throttle valve of FIG. 1 in a configuration to unlock the deadlocking mechanism;

FIG. 3 is a schematic view of the structure of FIG. 2 when water is used to press the screw;

FIG. 4 is an enlarged partial schematic view of the structure A shown in FIG. 2;

FIG. 5 is an enlarged schematic view of portion B of the structure shown in FIG. 3;

FIG. 6 is an enlarged schematic view of a portion C of the structure shown in FIG. 1;

FIG. 7 is an enlarged schematic view of a portion D of the structure shown in FIG. 3;

fig. 8 is a cross-sectional view of the valve cartridge of the structure shown in fig. 2.

The names of the parts corresponding to the respective reference numerals are: the throttle valve comprises a valve body 1, a valve core 2, a throttle passage 21, a first throttle hole 22, a second throttle hole 23, a screw 31, a steering gear 32, a first spring 33, a third insertion groove 34, a throttle valve 4, a throttle valve core 41, a throttle valve core hole 42, a drainage passage 43, a second spring 44, a throttle valve seat 45, a first gear 51, a second gear 52, a first rack 53, a first permanent magnet 231, a second rack 54, a second permanent magnet 541, a sealing member 6, a water inlet 81, a water outlet 82, a third spring 91, a fourth spring 92, a first sliding block 93, a second sliding block 94, a third sliding block 95 and a blocking inclined block 96.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

9. The invention comprises a valve body 1, wherein a valve cavity is arranged in the valve body 1, the valve cavity is provided with a water inlet 81 and a water outlet 82, a valve core 2 is arranged in the valve body 1, and a control device is arranged on the valve core 2, and the invention is characterized in that: a horizontally penetrating throttling channel 21 is arranged in the valve core 2, the control device controls the throttling channel 21 to be communicated with the water inlet 81 and the water outlet 82, a time-limited throttling device is arranged in the throttling channel 21 and comprises a first rack 53 and a second rack 54, and the first rack 53 and the second rack 54 are connected in a sealing manner through permanent magnets to close the throttling channel 21; the control device controls the first rack 53 and the second rack 54 to separate and open the throttling channel 21; the valve body 1 is provided with a locking mechanism for preventing the control device from operating, and the locking mechanism limits the operation of the control device through the clamping groove of the clamping block.

Specifically, the first throttle hole 21 is arranged in the throttle passage 21, the first insertion groove 55 and the second insertion groove 56 which are communicated with the side surface of the first throttle hole 21 are arranged in the valve core 2, and the first insertion groove 55 and the second insertion groove 56 are positioned in the same plane and are perpendicular to the length direction of the first throttle hole 23; the first rack 53 is slidably connected in the first insertion groove 55, and the second rack 54 is slidably connected in the second insertion groove 56; the cross section areas of the first rack 53 and the second rack 54 are consistent with the cross section size of the throttling channel; the lower end of the first rack 53 is provided with a first permanent magnet 531, the upper end of the second rack 54 is provided with a second permanent magnet 541, and the magnetic poles of the first permanent magnet 531 and the second permanent magnet 541 are opposite.

Specifically, the control device comprises a screw 31, a steering gear 32, a first spring 33, a first gear 51, a second gear 52 and a first rack 53, a third insertion groove 34 communicated with the axis of the first gear 51 is arranged in the valve core 2, and the third insertion groove 34 is positioned above the main flow hole 21 and is vertical to the length direction of the main flow hole 23; the screw rod 31 is slidably connected in the third inserting groove 34, and a steering gear 32 fixedly connected is arranged at the top end of the screw rod 31; the lower end part of the screw rod 31 is in threaded connection with the first gear 51, and the screw rod 31 can enable the first gear 34 to rotate positively and negatively by sliding up and down; the lower end of the third inserting groove 34 is provided with a first spring 33 which forces the screw rod 31 to move upwards; a second gear 52 meshed with the first rack 53 is arranged on the right side of the second inserting groove 56, and the second gear 52 can drive the first rack 53 to slide up and down through rotation; a first gear 51 vertically meshed with the second gear 52 is arranged on the right side of the second gear 52; the valve body 1 is provided with a locking mechanism for preventing the control device from operating, and the locking mechanism limits the operation of the control device through the clamping groove of the clamping block.

Specifically, a sealing element 6 is arranged in the valve body 1, the sealing element 6 is located between the valve body 1 and the valve core 2, and the sealing element 6 is used for sealing a gap between the valve core 2 and the valve body 1.

Specifically, a second throttle hole 23 is arranged in the throttle passage 21, a throttle valve 4 is arranged in the second throttle hole 23, and the throttle valve 4 comprises a throttle valve core 41, a drainage passage 43, a second spring 44 and a throttle valve seat 45; a throttle valve hole 42 penetrating in the longitudinal direction of the second throttle hole 23 is formed in the throttle valve seat 45; the throttle valve core 41 is connected to the left side of the throttle valve seat 45 in a sliding manner, and the left side of the throttle valve seat 46 is provided with a second spring 44 for forcing the throttle valve core 41 to move leftwards; and two sides of the throttle valve seat 45 are provided with drainage channels 43 communicated with the valve cavity 8, left openings of the drainage channels 43 are arranged on two sides of the left end of the throttle valve core 41, and when the throttle valve core 41 slides rightwards to the bottom, liquid can flow into the valve cavity 8 from the left openings of the drainage channels 43.

Specifically, the locking mechanism comprises a screw 31, a third spring 91, a fourth spring 92, a first sliding block 93, a second sliding block 94, a third sliding block 95 and an obstructing inclined block 96, a clamping groove with the size matched with that of the obstructing inclined block 96 is arranged in the screw 31, the clamping groove and the obstructing inclined block 96 are located on the same plane and are perpendicular to the length direction of the screw 31, the second sliding block 94 is arranged on the right side of the obstructing inclined block 96, the fourth spring 92 forcing the second sliding block 94 to move leftwards is arranged on the right side of the second sliding block, the third sliding block 95 and the first sliding block 93 are respectively arranged at the upper end and the lower end of the second sliding block 94, and the third spring 91 forcing the first sliding block 93 to move upwards is arranged at the lower end of the first sliding block 93.

Specifically, a clamping groove is formed in the left side of the first insertion groove 55 and used for limiting the first rack 53 to slide downwards, and clamping grooves are formed in the left side and the right side of the second insertion groove 56 and used for limiting the second rack 54 to slide upwards; the clamping groove can prevent the first rack from sliding down to the second insertion groove under the action of gravity and can also prevent the second rack from sliding up to the first insertion groove under the action of magnetic force.

Specifically, the screw 31 is splined with the valve core 2, and the screw 31 can be pressed by external force to slide up and down in the third inserting groove 34; the screw 31 is in spline fit with the connecting part of the valve core 2.

When the driving device, namely the screw rod, is rotated to the position shown in figure 1, the valve core main flow hole 21 is connected with the valve cavity, the pressing ball valve is in an opening state at the moment, and water flows out of the water outlet 82 from the valve cavity through the main flow hole 21 so as to achieve the purpose of water supply; when the other mode, namely the pressing type water supply mode, needs to be switched, only the steering gear 32 needs to be rotated, so that the steering gear 32 drives the screw 31 to rotate by 90 °, and the internal structure of the safety throttle valve is as shown in fig. 2, at this time, the first throttle hole 22 and the second throttle hole 23 are communicated with the water inlet 81 and the water outlet 82, and the time-delay throttle device, namely the first rack 53 and the second rack 54, blocks the first throttle hole 22.

When water is needed, a user only needs to press the screw 31 to the bottom, at this time, the screw 31 is pressed down, because the first gear 51 is in threaded fit with the screw 31, the first gear 51 rotates counterclockwise, the first gear 51 and the second gear 52 are vertically engaged with each other, the second gear 52 rotates clockwise to drive the first rack to slide up to the bottom, the lower end of the first rack 53 and the upper end of the second rack 54 are respectively provided with a first permanent magnet 531 and a second permanent magnet 541, the magnetic poles of the first permanent magnet 531 and the second permanent magnet 541 are opposite, when the first rack 53 slides to the uppermost end of the first inserting groove 55, as shown in fig. 3, along with the increasing distance between the first permanent magnet 531 and the second permanent magnet 541, when the mutual attraction force is smaller than the gravity of the second rack 54, the second rack 54 slides to the bottom of the second inserting groove 541 under the action of gravity; at this time, the water flows through the first orifice 22 to the second orifice 23; one part of the water path is communicated to the outlet through the throttle valve core hole 42, and at this time, the pressure of the water flow on the left side of the throttle valve core 41 is greater than that of the water flow on the right side of the throttle valve core 41, so that the throttle valve core 41 can press the third spring 44 to slide rightwards under the action of the water flow until the left opening of the drainage channel 43 is connected with the second throttle hole, and at this time, the water flow can also be communicated to the outlet through the drainage channels on the two sides of;

when the user cancels the stress on the screw 31, the screw 31 slowly rises under the action of the first spring 33, the screw 31 is in threaded fit with the first gear 51, at this time, the first gear 51 rotates clockwise, because the first gear 51 and the second gear 52 are vertically meshed with each other, the second gear 52 rotates counterclockwise, the first rack 53 slowly slides downwards to the bottom, as the first rack 53 slides to the bottom, the relative distance between the first permanent magnet 531 and the second permanent magnet 541 is continuously reduced, when the attractive force between the first permanent magnet 541 and the second permanent magnet 542 is greater than the gravity of the second rack 54, the second rack 54 is connected to the first rack 53 under the action of the attractive force of the second permanent magnet 541 to complete the sealing of the first throttle hole 22, at this time, no water flows to the second throttle hole 23 from the first throttle hole 22, the water flow pressure on the left side of the second throttle hole 23 is gradually reduced, therefore, the throttle valve core 41 slides to the left under the action of the second spring 44, and at this time, the left opening of the drainage channel 43 is blocked by the throttle valve core 41, and the water flow can only flow out from the throttle valve core hole 42, so that the water flow out from the water outlet 82 is gradually reduced, and the water outlet amount used by a user at one time only needs to be a little from the beginning, thereby avoiding the waste of the subsequent water flow.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a safe throttling ball valve, includes valve body (1), be equipped with the valve pocket in valve body (1), the valve pocket is equipped with water inlet (81) and delivery port (82), be equipped with case (2) in valve body (1), be equipped with controlling means on case (2), its characterized in that: a horizontally penetrating throttling channel (21) is arranged in the valve core (2), the control device controls the throttling channel (21) to be communicated with the water inlet (81) and the water outlet (82), a time-limited throttling device is arranged in the throttling channel (21), the time-limited throttling device comprises a first rack (53) and a second rack (54), and the first rack (53) and the second rack (54) are connected in a sealing mode through a permanent magnet to close the throttling channel (21); the control device controls the first rack (53) and the second rack (54) to separate and open the throttling channel (21); the valve body (1) is provided with a locking mechanism for preventing the control device from operating, and the locking mechanism limits the operation of the control device through the clamping groove of the clamping block.

2. A safety throttling ball valve as claimed in claim 1, wherein: a first throttling hole (21) is formed in the throttling channel (21), a first inserting groove (55) and a second inserting groove (56) which are communicated with the side face of the first throttling hole (21) are formed in the valve core (2), and the first inserting groove (55) and the second inserting groove (56) are located in the same plane and are perpendicular to the length direction of the first throttling hole (23); the first rack (53) is connected in a first inserting groove (55) in a sliding manner, and the second rack (54) is connected in a second inserting groove (56) in a sliding manner; the lower end of the first rack (53) is provided with a first permanent magnet (531), the upper end of the second rack (54) is provided with a second permanent magnet (541), and the magnetic poles of the first permanent magnet (531) and the second permanent magnet (541) are opposite.

3. A safety throttling ball valve as claimed in claim 1, wherein: the control device comprises a screw rod (31), a steering gear (32), a first spring (33), a first gear (51), a second gear (52) and a first rack (53), a third insertion groove (34) communicated with the axis of the first gear (51) is arranged in the valve core (2), and the third insertion groove (34) is positioned above the main flow hole (21) and is vertical to the length direction of the main flow hole (23); the screw rod (31) is connected in the third inserting groove (34) in a sliding mode, and a steering gear (32) fixedly connected is arranged at the top end of the screw rod (31); the lower end part of the screw rod (31) is in threaded connection with the first gear (51), and the screw rod (31) can enable the first gear (34) to rotate positively and negatively by sliding up and down; the lower end of the third inserting groove (34) is provided with a first spring (33) for forcing the screw rod (31) to move upwards; a second gear (52) meshed with the first rack (53) is arranged on the right side of the second inserting groove (56), and the second gear (52) can drive the first rack (53) to slide up and down through rotation; and a first gear (51) vertically meshed with the second gear (52) is arranged on the right side of the second gear (52).

4. A safety throttling ball valve as claimed in claim 1, wherein: the sealing device is characterized in that a sealing piece (6) is arranged in the valve body (1), the sealing piece (6) is located between the valve body (1) and the valve core (2), and the sealing piece (6) is used for sealing a gap between the valve core (2) and the valve body (1).

5. A safety throttling ball valve as claimed in claim 1, wherein: a second throttle hole (23) is formed in the throttle passage (21), a throttle valve (4) is formed in the second throttle hole (23), and the throttle valve (4) comprises a throttle valve core (41), a drainage passage (43), a second spring (44) and a throttle valve seat (45); a throttle valve hole (42) penetrating along the length direction of the second throttle hole (23) is arranged in the throttle valve seat (45); the throttle valve core (41) is connected to the left side of the throttle valve seat (45) in a sliding manner, and a second spring (44) for forcing the throttle valve core (41) to move leftwards is arranged on the left side of the throttle valve seat (46); and drainage channels (43) communicated with the valve cavity (8) are arranged on two sides of the throttle valve seat (45), openings on the left side of the drainage channels (43) are arranged on two sides of the left end of the throttle valve core (41), and when the throttle valve core (41) slides to the bottom rightwards, liquid can flow into the valve cavity (8) from the opening on the left side of the drainage channels (43).

6. A safety throttling ball valve as claimed in claim 1, wherein: the locking mechanism comprises a screw rod (31), a third spring (91), a fourth spring (92), a first sliding block (93), a second sliding block (94), a third sliding block (95) and an obstructing inclined block (96), wherein a clamping groove matched with the obstructing inclined block (96) in size is arranged in the screw rod (31), the clamping groove and the obstructing inclined block (96) are located on the same plane and are perpendicular to the length direction of the screw rod (31), the second sliding block (94) is arranged on the right side of the obstructing inclined block (96), the fourth spring (92) forcing the second sliding block (94) to move leftwards is arranged on the right side of the second sliding block (94), the third sliding block (95) and the first sliding block (93) are arranged at the upper end and the lower end of the second sliding block (94) respectively, and the third spring (91) forcing the first sliding block (93) to move upwards is arranged at the lower end of the first.

7. A safety throttle valve according to claim 2, characterized in that: the left side of the first insertion groove (55) is provided with a clamping groove for limiting the first rack (53) to slide downwards, and the left side and the right side of the second insertion groove (56) are provided with clamping grooves for limiting the second rack (54) to slide upwards.

8. A safety throttling ball valve as claimed in claim 3, wherein: the screw rod (31) is in spline connection with the valve core (2), and the screw rod (31) can be pressed by external force to slide up and down in the third inserting groove (34).