CN112032340A

CN112032340A - Throttle valve with overflow function

Info

Publication number: CN112032340A
Application number: CN202010902121.0A
Authority: CN
Inventors: 初乐锟
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-01
Filing date: 2020-09-01
Publication date: 2020-12-04

Abstract

The invention discloses a throttling valve with an overflow function, which comprises a valve body, wherein a cover body is fixedly arranged at the top of the valve body, a flow channel is formed in the valve body, a connecting column is movably arranged in the cover body, a hand wheel is fixedly arranged at the top of the connecting column, a sleeve rod is fixedly arranged in the connecting column, a spring is sleeved on the periphery of the sleeve rod, a limiting block is fixedly arranged at one end of the spring, and a sealing plug is arranged on the periphery of the connecting column. According to the throttling valve, the throttling effect is achieved by changing the shape of the opening on the inner sliding block, the mode that the limiting block is combined with the spring to be matched with the clamping groove is utilized to replace the mode that the threaded rod is matched with the thread, the problem that the thread on the threaded rod is broken to influence the whole normal use of the throttling valve is effectively solved, the throttling valve has overflow capacity to deal with the damage of pressure generated when excessive fluid passes through the throttling valve by being matched with the overflow pipe, meanwhile, the overflow valve is not required to be arranged, and the cost is saved.

Description

Throttle valve with overflow function

Technical Field

The invention relates to the technical field of throttle valves, in particular to a throttle valve with an overflow function.

Background

A throttle valve is a valve that controls the flow of fluid by changing the throttle section or throttle length. The throttle valve and the one-way valve are connected in parallel to form the one-way throttle valve. The throttle valve and the one-way throttle valve are simple flow control valves, and in a constant displacement pump hydraulic system, the throttle valve and an overflow valve are matched to form three throttling speed regulating systems, namely an oil inlet path throttling speed regulating system, an oil return path throttling speed regulating system and a bypass throttling speed regulating system. The throttle valve has no flow negative feedback function, cannot compensate speed instability caused by load change, and is generally only used in occasions with small load change or low requirement on speed stability.

The existing throttle valve has the following problems in assembly and use:

1. the thread groove of seting up on the inside inner wall of current choke valve all through the threaded rod cooperation valve body, and the position of controlling inside case through hand wheel cooperation screw thread effect, and then reach the size of the inside valve port of regulating valve body, reach flow control's purpose, however along with long-term use, when the fluid passes through, the fluid can produce certain pressure to the case impact and cause the threaded rod to rock, can lead to the screw thread fracture on the threaded rod, lead to interlock becoming loose between threaded rod and the inside thread groove of valve body, thereby cause the case to be unstable inadequately inside the valve body, influence the normal use of choke valve.

2. When the flow rate of the fluid passing through the inside of the throttling valve exceeds the limit of the throttling valve, the pressure generated by the fluid can damage the inside of the throttling valve due to the overflow effect of the inside of the throttling valve.

Disclosure of Invention

The present invention is directed to a throttle valve with an overflow function to solve the problems of the background art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a choke valve with overflow function, includes the valve body, the top fixed mounting of valve body has the lid, the runner has been seted up to the inside of valve body, the inside movable mounting of lid has the spliced pole, the top fixed mounting of spliced pole has the hand wheel, the inside fixed mounting of spliced pole has the loop bar, the peripheral cover of loop bar is equipped with the spring, the one end fixed mounting of spring has the stopper, the periphery of spliced pole is provided with the sealing plug, the bottom fixed mounting of spliced pole has first slider, the bottom movable mounting of first slider has the second slider, the lateral wall fixed mounting of valve body inner chamber has sealed the pad, the sealed lateral wall fixed mounting who fills up has the wearing layer, the surface intercommunication of valve body has the overflow pipe, the both ends fixed mounting of valve.

Preferably, the first slider and the second slider are both cylinders, the bottom of the first slider is fixedly provided with a circular-ring-shaped convex block, and the inside of the side wall of the top end of the second slider is provided with a circular groove matched with the bottom of the first slider.

Preferably, the side wall of the first sliding block is provided with three openings in different shapes, the inside of the side wall of the second sliding block is provided with a rectangular opening, and the length of the bottom edge of the opening on the first sliding block is equal to the length of the top edge of the rectangular opening on the side wall of the second sliding block.

Preferably, the mounting position of the interface is arranged at one end of the flow channel, and the mounting position of the sealing gasket is arranged on the side walls of the two sides of the inner cavity of the valve body, which are not provided with the flow channel, and is in contact with the first sliding block and the second sliding block through the wear-resistant layer.

Preferably, the valve body and the cover body are both provided with a cavity matched with the outer diameters of the connecting column, the first sliding block and the second sliding block, and the cover body is provided with an annular groove matched with the limiting block in the cavity.

Preferably, the number of the limiting blocks is two, the limiting blocks are arc-shaped blocks and are symmetrically arranged in the connecting column through the sleeve rods, the through holes matched with the sleeve rods are formed in the connecting column, and grooves matched with the limiting blocks are formed in two sides of the through holes.

Preferably, the overflow pipe runs through the inside of the valve body and is respectively communicated with the flow channels arranged in the valve body, and the position of the overflow pipe, which is positioned in the inner cavity part of the valve body, is arranged on one side of the sealing plug and is positioned above the sealing gasket.

Preferably, a circular opening is formed in the side wall of the second sliding block opposite to the side wall provided with the rectangular opening, and the arrangement directions of the two openings formed in the second sliding block are opposite to the arrangement direction of the flow channel in the valve body.

Preferably, the inside of the sealing gasket is provided with a plurality of regular hexagon through holes with hollow inside, and the sealing gasket is made of rubber.

Compared with the prior art, the invention has the beneficial effects that: this choke valve with overflow function, moreover, the steam generator is simple in structure, change inside slider upper shed's shape through rotating the hand wheel, thereby realize the throttle effect, utilize the form that the stopper combines the spring fit draw-in groove in addition, replace the form of threaded rod cooperation screw thread, the problem that the whole normal use of choke valve is influenced in the thread fracture on the threaded rod has effectively been avoided, through the cooperation overflow pipe, make this choke valve possess overflow capacity and come to respond to the destruction of excess fluid production pressure to throttle valve inner structure when passing through, also need not to be equipped with the overflow valve simultaneously, the cost is saved.

Drawings

FIG. 1 is a schematic front view of the internal structure of the present invention;

FIG. 2 is a right-side view of the internal structure of the present invention;

FIG. 3 is a schematic view of the internal structure of the portion A in FIG. 1;

FIG. 4 is a schematic view of the first slider and the second slider having openings and the connection relationship therebetween;

FIG. 5 is a schematic view of a stopper of the present invention;

FIG. 6 is a schematic diagram of the positional relationship of the connecting column, the first slider, the second slider and the limiting block of the present invention;

fig. 7 is a schematic view of the gasket structure of the present invention.

In the figure: 1 valve body, 2 lid, 3 runners, 4 spliced poles, 5 hand wheels, 6 loop bars, 7 springs, 8 stopper, 9 sealing plugs, 10 first slider, 11 second slider, 12 sealed pad, 13 wearing layer, 14 overflow pipe, 15 interfaces.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, an embodiment of the present invention is shown: a throttle valve with an overflow function comprises a valve body 1, a cover body 2 is fixedly installed at the top of the valve body 1, the bottom of the cover body 2 is fixedly connected with the top of the valve body 1 in a welding mode, the valve body 1 and the cover body 2 are communicated with each other, a flow channel 3 is formed in the valve body 1, the valve body 1 is cylindrical, meanwhile, two ends of the valve body are communicated with a cylinder, the flow channel 3 is arranged in the cylinder at the two ends, round corners are arranged on one sides, close to a first slide block 10 and a second slide block 11, of the flow channel 3, a connecting column 4 is movably installed in the cover body 2, a hand wheel 5 is fixedly installed at the top of the connecting column 4, a sleeve rod 6 is fixedly installed in the connecting column 4, a spring 7 is sleeved on the periphery of the sleeve rod 6, two limiting blocks 8 are fixedly installed at one end of the spring 7, the two limiting blocks 8 are, the connecting column 4 is internally provided with a through hole matched with the loop bar 6, two sides of the through hole are provided with grooves matched with the limit block 8, the limit block 8 compresses the spring 7 firstly, then the limit block 8 is pushed into the grooves arranged in the cover body 2 under the action of the spring 7, the impact force generated by impacting the first slide block 10 and the second slide block 11 to the fluid by the limit block 8 is utilized, the whole stability of the connecting column 4 is kept, the service life of the whole throttle valve is prolonged, and the use stability is enhanced, the periphery of the connecting column 4 is provided with a sealing plug 9, the installation position of the sealing plug 9 is positioned below the limit block 8 and above the first slide block 10, the bottom of the connecting column 4 is fixedly provided with a first slide block 10, the bottom of the first slide block 10 is movably provided with a second slide block 11, the first slide block 10 and the second slide block 11 are both cylindrical, and the bottom of the, the inner part of the side wall of the top end of the second slide block 11 is provided with a circular groove which is matched with the bottom of the first slide block 10 by a lug, the side wall of the first slide block 10 is provided with three open holes with different shapes, the inner part of the side wall of the second slide block 11 is provided with a rectangular opening, and the openings face to the input end of the valve body 1, when the flow is required to be adjusted, the first slide block 10 slides in the valve body 1 by holding the hand wheel 5 and rotating the hand wheel 5 along with the rotation of the hand wheel 5, when the opening arranged on the side wall of the first slide block 10 is butted with the opening arranged on the second slide block 11, through holes with different areas are formed at the output end of the valve body 1, thereby achieving the purpose of throttling, when the different openings arranged on the first slide block 10 are butted with the opening arranged on the second slide block 11, because the areas of the openings are different, thereby achieving the effect of throttling, a circular opening is arranged on the second sliding block 11 and inside the opposite side wall with the rectangular opening side wall, the circular opening faces the output end of the valve body 1, meanwhile, the position of the circular opening is lower than the position of the rectangular opening arranged on the second sliding block 11, the arrangement direction of the two openings arranged on the second sliding block 11 is respectively opposite to the flow channel 3 arranged inside the valve body 1, the bottom edge of the opening arranged on the first sliding block 10 is equal to the length of the top edge of the rectangular opening arranged on the side wall of the second sliding block 11, cavities matched with the outer diameters of the connecting column 4, the first sliding block 10 and the second sliding block 11 are arranged inside the valve body 1 and the cover body 2, an annular groove matched with the limiting block 8 is arranged inside the cavity arranged on the cover body 2, a sealing gasket 12 is fixedly arranged on the side wall of the inner cavity of the valve body 1, and a plurality of hollow regular hexagon, the sealing gasket 12 is made of rubber, the sealing effect is achieved by utilizing the hydrophobic property of the rubber, the wear-resistant layer 13 is fixedly installed on the side wall of the sealing gasket 12, when the first sliding block 10 rotates, the elasticity of the sealing gasket 12 is utilized to be matched with the through hole arranged on the first sliding block 10, after the opening on the first sliding block 10 is moved away from the input end and the output end of the valve body 1, the sealing gasket 12 enters the opening of the first sliding block 10 and seals a gap caused by the opening to form sealing, when the pressure given by the first sliding block 10 is higher, the filling effect is more obvious, the sealing effect is better, the outer surface of the valve body 1 is communicated with the overflow pipe 14, when the internal passing flow exceeds the maximum capacity allowed in the valve body 1, the fluid overflows at the input end of the valve body 1 through the overflow pipe 14 and directly flows to the output end of the valve body 1, the overflow pipe 14 penetrates through the inside of the valve body 1 and, and the overflow pipe 14 is arranged at one side of the sealing plug 9 at the position of the inner cavity part of the valve body 1 and is arranged above the sealing gasket 12, the two ends of the valve body 1 are fixedly provided with the interfaces 15, the installation position of the interface 15 is arranged at one end of the flow channel 3, and the installation position of the sealing gasket 12 is arranged on the side walls of the two sides of the inner cavity of the valve body 1, which are not provided with the flow channel 3, and is contacted with the first slide block 10 and the second slide block 11 through the wear-.

Example 1, according to figures 1-3, 5-6, during assembly, after the connecting post 4 has been placed inside the cover 2, with the connecting column 4 being put in, the limiting block 8 firstly compresses the spring 7 and moves in the cavity arranged in the cover body 2, when the limiting block 8 moves to the groove arranged in the cover body 2, the limiting block 8 is pushed into the groove arranged in the cover body 2 under the action of the spring 7, the connecting column 4 is fixed in the cover body 2, meanwhile, a first slide block 10 and a second slide block 11 are placed in a cavity arranged in the valve body 1, openings arranged on the first slide block 10 and the second slide block 11 respectively correspond to the flow channel 3 arranged on the valve body 1, and the positions of the first slide block 10 and the second slide block 11 are determined according to the orientation of the input end and the output end, and finally the cover body 2 is connected with the valve body 1 in a welding mode.

Embodiment 2, according to fig. 1-4 and 6-7, when the valve body 1 is used and the throttle adjustment is needed, the hand wheel 5 is rotated to rotate the first slider 10 above the second slider 11, and along with the change of the angle of the first slider 10, when the openings with different shapes are arranged on the first slider 10 and the openings are arranged on the second slider 11 to be butted, the positions of the openings are located at the input end of the valve body 1, and further the openings with different cross-sectional areas achieve the throttle effect, and the throttle valve has the overflow function by arranging the overflow pipe above the input end and the output end of the valve body 1.

Embodiment 3, according to fig. 2, 4, 6 and 7, when the first slider 10 rotates, the opening formed on the first slider 10 inevitably moves to the side walls of the valve body 1 at both ends of the flow channel, so if the opening is not treated, a leakage situation may occur inside the valve body 1, at this time, the rubber elasticity is used by the arranged gasket 12, when the first slider 10 contacts the gasket 12, the gasket 12 is pressed, and after the gasket 12 is pressed, the opening formed inside the first slider 10 is blocked and the opening is filled, and when the pressure applied by the first slider 10 is larger, the filling effect is more obvious, and the sealing effect is better.

Embodiment 4, according to fig. 1, 5-6, when using, stopper 8 moves in 2 inside setting up the recess of lid all the time, and then through the wall thickness of design stopper 8, improves stopper 8 and strikes the impact force that first slider 10 and second slider 11 produced to the fluid, keeps the holistic stability of spliced pole 4, prolongs the holistic life of this choke valve and strengthens stability in use.

The working principle is as follows: assembling the throttle valve, after the connecting column 4 is placed in the cover body 2, along with the placing of the connecting column 4, the limiting block 8 firstly compresses the spring 7, then the limiting block 8 is pushed into the groove formed in the cover body 2 under the action of the spring 7, the connecting column 4 is fixed in the cover body 2, meanwhile, the first slider 10 and the second slider 11 are placed in the cavity formed in the valve body 1, then the cover body 2 is connected with the valve body 1 in a welding mode, finally, after the throttle valve is connected to a target device through the interface 15 arranged on the valve body 1, when the throttle valve is used, when the flow is required to be adjusted, the hand wheel 5 is held by hands, the hand wheel 5 is rotated, the first slider 10 slides in the valve body 1 along with the rotation of the hand wheel 5, and when the opening formed on the side wall of the first slider 10 is butted with the opening formed on the second slider 11, and then form the through-hole that passes through the area difference at the output of valve block 1, thus reach the purpose of throttling, when the inside through-flow exceeds the maximum capacity that the inside of valve block 1 allows, the fluid overflows through overflow pipe 14 at the input of valve block 1, and the direct output that flows to valve block 1.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or scope of the present invention. Accordingly, the embodiments of the invention are exemplary, but not limiting. The scope of the invention is indicated by the appended claims rather than by the foregoing description, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a choke valve with overflow function, includes valve body (1), its characterized in that: the top fixed mounting of valve body (1) has lid (2), runner (3) have been seted up to the inside of valve body (1), the inside movable mounting of lid (2) has spliced pole (4), the top fixed mounting of spliced pole (4) has hand wheel (5), the inside fixed mounting of spliced pole (4) has loop bar (6), the peripheral cover of loop bar (6) is equipped with spring (7), the one end fixed mounting of spring (7) has stopper (8), the periphery of spliced pole (4) is provided with sealing plug (9), the bottom fixed mounting of spliced pole (4) has first slider (10), the bottom movable mounting of first slider (10) has second slider (11), the lateral wall fixed mounting of valve body (1) inner chamber has sealed pad (12), the lateral wall fixed mounting of sealed pad (12) has wearing layer (13), the outer surface of the valve body (1) is communicated with an overflow pipe (14), and two ends of the valve body (1) are fixedly provided with connectors (15).

2. The throttle valve with overflow function according to claim 1, wherein: the shape of first slider (10) and second slider (11) is the cylinder, the bottom fixed mounting of first slider (10) has the ring form lug, the inside of second slider (11) top lateral wall has the circular recess that sets up lug looks adaptation with the bottom of first slider (10).

3. The throttle valve with overflow function according to claim 1, wherein: the side wall of the first sliding block (10) is provided with three open holes in different shapes, a rectangular opening is formed in the side wall of the second sliding block (11), and the length of the bottom edge of the open hole formed in the first sliding block (10) is equal to the length of the top edge of the rectangular opening formed in the side wall of the second sliding block (11).

4. The throttle valve with overflow function according to claim 1, wherein: the mounting position of interface (15) sets up in the one end of runner (3), the mounting position of sealed pad (12) sets up and does not be provided with the both sides lateral wall of runner (3) in valve body (1) inner chamber and contacts through wearing layer (13) with first slider (10) and second slider (11).

5. The throttle valve with overflow function according to claim 1, wherein: the cavity that matches with spliced pole (4), first slider (10) and second slider (11) external diameter is all seted up in the inside of valve body (1) and lid (2), and lid (2) set up the inside of cavity and seted up the annular groove with stopper (8) looks adaptation.

6. The throttle valve with overflow function according to claim 1, wherein: the quantity of stopper (8) is two, two stopper (8) shape is the arc piece and is the symmetry form and installs in the inside of spliced pole (4) through loop bar (6), the recess with stopper (8) looks adaptation is seted up with the through-hole of loop bar (6) looks adaptation and the both sides of through-hole to the inside of spliced pole (4).

7. The throttle valve with overflow function according to claim 1, wherein: the overflow pipe (14) runs through the inside of the valve body (1) and is respectively communicated with the flow channel (3) formed inside the valve body (1), and the position of the overflow pipe (14) located in the inner cavity part of the valve body (1) is arranged on one side of the sealing plug (9) and located above the sealing gasket (12).

8. The throttle valve with overflow function according to claim 2, wherein: the second sliding block (11) is provided with a round opening in the side wall opposite to the side wall provided with the rectangular opening, and the arrangement directions of the two openings formed in the second sliding block (11) are opposite to the arrangement direction of the flow channel (3) in the valve body (1).

9. The throttle valve with overflow function according to claim 1, wherein: the inside of sealed pad (12) is provided with a plurality of inside for hollow regular hexagon through-holes, just sealed pad (12) use the material to be rubber.