A kind of many retaining valves
Technical field
The utility model belongs to valve technology field, relates to a kind of many retaining valves.
Background technique
Ball valve is a kind of switch gear that is widely used on the medium pipelines such as metallurgy, electric power, petrochemical industry, steam, air, coal gas, inflammable gas and plumbing.It has been generally acknowledged that the ball valve optimum is directly done open and close to use, but recent development becomes to make it have the usefulness of throttling and control flow rate with ball valve design.Present existing ball valve mainly comprises valve body, valve rod and spool, has the water port on the spherical valve core, and valve rod drives valve core rotation, thereby realizes the switch of spool.And on the valve body of being everlasting dial is installed, and the flow of ball valve is quantized, make things convenient for fluid flow accurately to regulate.
In the single-pass ball valve, only be provided with a water port on the spool of ball valve, when spool revolves when turning 90 degrees, ball valve just can be realized the conversion between all-pass and the full cut-off two states.Though this class ordinary ball valve structure is comparatively simple, but also exist the not high problem of degree of regulation, the rotational travel of handle and the water-flowing amount of ball valve are closely related, when valve body medium discharge value requires less, the MEDIA FLOW variations of flux hour, the stroke that handle rotates shortens accordingly, and the difficulty that this has just increased operation greatly also can't reach required validity simultaneously.
Summary of the invention
The purpose of this utility model is at the existing the problems referred to above of existing valve, and has proposed a kind of degree of regulation height, and has the valve of different circulation gears.
The purpose of this utility model can realize by following technical proposal: a kind of many retaining valves, comprise spool, valve rod and the valve body that has water intake and water outlet, spool is positioned at valve body, the inner of valve rod links to each other with spool, the outer end of valve rod is stretched out valve body and is provided with handle, be provided with seal ring between valve rod and the valve body, it is characterized in that, have the water port that several are used to be communicated with water intake and water outlet on the described spool, the maximum water flowing aperture of above-mentioned each water port varies in size, and when valve is in opening state, only there is one of them water port to be in and is communicated with water intake and water outlet state.
One of them water port is in when being communicated with water intake and water outlet state on the spool, and all the other water ports all are in closed condition, and this moment, medium flowed into from the water intake of valve body, discharges from water outlet after passing this water port.Handle with sleeve, drive valve core rotation and come the open and-shut mode of control valve, in the rotation process, each water port is realized from full cut-off successively to the conversion the standard-sized sheet two states, but when valve body is in the water flowing state, remains and have only a water port to be in conducting.And in the valve core rotation process, the spool part between adjacent two water ports all can block water intake and water outlet fully, thereby blocks flowing of medium.
Because the maximum water flowing aperture of each water port varies in size, promptly representing the peak rate of flow difference of each water port simultaneously, the user can select different water ports to regulate use according to concrete needs.And handle is when rotating the stroke of identical size, and less its changes in flow rate of water port in maximum water flowing aperture is minimum; Changes in flow rate is identical conversely speaking,, and the handle stroke that the water port of maximum water flowing aperture minimum need be rotated is maximum, and this helps manual operation.
In above-mentioned a kind of many retaining valves, be provided with dial between described valve body and the handle, dial is marked with plurality of sections and represents that respectively above-mentioned each water port opens and closes the scale of degree.When handle is in adjacent two sections scales centre, represent that promptly the spool part between adjacent two water ports has blocked water intake and water outlet fully, spool is in closed condition, and flowing of medium blocked.Each water port homogeneous phase on dial should have one section with oneself the coupling scale, each water port when in running order, the rotational travel of handle drop on the corresponding scale in this water port on.
In above-mentioned a kind of many retaining valves, the two ends of described dial are respectively equipped with towards the outstanding block of handle orientations.Block carries out spacing to handle, handle when handle turns to the transition point at dial two ends, is stopped by block respectively between two blocks.
In above-mentioned a kind of many retaining valves, the angular range that described handle rotates is 0~90 degree.
In above-mentioned a kind of many retaining valves, described each water port is interconnected.Each water flowing all can be communicated with water intake and water outlet in the valve core rotation process, also is interconnected between each water port simultaneously.
In above-mentioned a kind of many retaining valves, the quantity of described water port is two.
In above-mentioned a kind of many retaining valves, described spool is spherical in shape, and the center line of above-mentioned each water port all intersects with the centre of sphere.The utility model is applicable to the ball valve of spheroid as spool.
In above-mentioned a kind of many retaining valves, described spool is cylindric.
The rotation that these many retaining valves utilize handle to drive spool comes the open and-shut mode of control valve, compared with prior art, have the water port that several are used for water flowing on the spool of these many retaining valves, and the maximum water flowing aperture of each water port varies in size, and the user can freely select the water port of different gears to regulate, control flow rate.And when working in use water port, small aperture wherein, it also has the degree of regulation height, the advantage of easy-to-operat.
Description of drawings
Fig. 1 is the structural representation of these many retaining valves.
Fig. 2 is the sectional structure schematic representation of these many retaining valves.
Fig. 3 is the structural representation of spool in these many retaining valves.
Fig. 4 is the sectional structure schematic representation of spool in these many retaining valves.
Fig. 5 is the indication schematic representation of handle on dial in these many retaining valves.
Among the figure, 1, valve body; 2, valve rod; 3, spool; 31, groove; 32a, water port one; 32b, water port two; 4, water intake; 5, water outlet; 6, handle; 7, seal ring; 8, dial; 81, block.
Embodiment
Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As depicted in figs. 1 and 2, these many retaining valves are ball valve, comprise spool 3, valve rod 2 and have water intake 4 and the valve body 1 of water outlet 5, spool 3 is positioned at valve body 1, the inner of valve rod 2 links to each other with spool 3, and the outer end of valve rod 2 is stretched out valve body 1 and is provided with handle 6, is provided with seal ring 7 between valve rod 2 and the valve body 1.Be provided with dial 8 between valve body 1 and the handle 6, the two ends of dial 8 are respectively equipped with towards the outstanding block 81 of handle 6 directions, and handle 6 is between two blocks 81.
As shown in Figure 3 and Figure 4, the spool 3 in the present embodiment is spherical in shape, and the surface has the groove 31 that is used for valve rod 2 grafting, and on spool 3, have a water port 32 that several apertures vary in size, in the present embodiment, the quantity of water port 32 is two, is respectively water port one 32a and water port two 32b.The aperture of water port one 32a is bigger, and is interconnected with water port two 32b, and their center line all intersects with the centre of sphere.
As shown in Figure 5, dial 8 is marked with scale, the opening degree of expression water port.When handle 6 indicating positions were positioned between scale " 1 " and " 2 ", expression water port one 32a was in the water flowing state; When handle 6 indicating positions were positioned between scale " 3 " and " 4 ", expression water port two 32b were in the water flowing state; When handle 6 indicating positions were positioned between scale " 3 " and " 4 ", expression water port one 32a and water port two 32b all were in closed condition.When handle 6 rotated on dial 8 and stopped by two blocks 81, its indicating positions was just indicated respectively on scale " 2 " and " 4 ".In the present embodiment, the angular range that handle 6 rotates is 0~90 degree.
When water port one 32a is in when being communicated with water intake 4 and water outlet 5 states, water port two 32b are in closed condition, and medium flows into from the water intake 4 of valve body 1, discharge from water outlet 5 after passing water port one 32a.This moment, handle 6 indications were between scale " 1 ", " 2 ", handle 6 turns in the process that scale " 1 " locates from scale " 2 ", the opening degree of water port one 32a reduces gradually, and handle 6 indicating positions arrive scale " 1 " when locating, and the water-flowing amount of water port one 32a is zero.When handle 6 indications were between scale " 1 ", " 3 ", spool 3 surfaces between water port one 32a and water port two 32b blocked water intake 4 and water outlet 5, and flowing of medium blocked.Handle 6 continues to locate to rotate toward dial 8 high scales " 3 ", when the indicating positions of handle 6 is crossed scale " 3 ", water port two 32b enter opening state, handle 6 turns to scale " 4 " process from scale " 3 ", the opening degree of water port two 32b increases gradually, and when handle 6 indicating positions arrived scale " 4 ", it is maximum that the water-flowing amount of water port two 32b reaches, in this process, water port one 32a is in buttoned-up status all the time.
This valve of blocking utilizes handle 6 to drive the open and-shut mode that spool 3 rotates control valve more, the indicating positions of handle 6 forwards to scale " 4 " process from scale " 2 ", has realized that successively water port one 32a is from the standard-sized sheet to the full cut-off and the conversion of water port two 32b from the full cut-off to the standard-sized sheet.And when valve body 1 is in the water flowing state, have only a water port to be on state all the time.And in spool 3 rotation processes, spool 3 surface energies between water port one 32a and water port two 32b block water intake 4 and water outlet 5 fully, block flowing of medium.
Because the maximum water flowing aperture of water port one 32a and water port two 32b varies in size, and is promptly representing the peak rate of flow difference of each water port, the user can select different water ports to regulate use according to concrete needs.
Handle 6 is when rotating the stroke of identical size, and the changes in flow rate of water port two 32b is littler than the changes in flow rate of water port one 32a; Changes in flow rate is identical conversely speaking,, and handle 6 strokes that water port two 32b need rotate are longer, make things convenient for manual operation.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.