CN213393829U

CN213393829U - Novel two-way throttle valve

Info

Publication number: CN213393829U
Application number: CN202022369286.4U
Authority: CN
Inventors: 罗逢; 冉龙明; 赵柯润; 马小军
Original assignee: Yibin Sanjiang Machinery Co Ltd
Current assignee: Yibin Sanjiang Machinery Co Ltd
Priority date: 2020-10-22
Filing date: 2020-10-22
Publication date: 2021-06-08
Anticipated expiration: 2030-10-22

Abstract

The utility model discloses a novel two-way throttle valve, which belongs to the technical field of aviation and comprises a shell, wherein a piston cavity is arranged in the shell, and a liquid inlet and a liquid outlet are respectively arranged at two ends of the piston cavity; the piston cavity is also internally provided with a slidable valve core, one end of the valve core is provided with a plug for plugging the liquid inlet or the liquid outlet, the valve core is also provided with a central hole and a side hole in a penetrating manner, the central hole is coaxially arranged with the liquid inlet and the liquid outlet, one end of the side hole close to the plug deviates from the liquid inlet or the liquid outlet, and one end of the side hole far away from the plug converges with the central hole. The utility model discloses make the medium flow to the throttle characteristic of product right-hand member and the throttle characteristic of hydraulic pressure flow to the product left end from the product left end inequality, realize setting for of two positive and negative direction medium flow.

Description

Novel two-way throttle valve

Technical Field

The utility model belongs to the technical field of the aviation, particularly, relate to a novel two-way choke valve.

Background

With the progress of society, scientific development and wide application of mechanical equipment, various liquid and gas pipelines are required in various industries; in many cases, a throttle valve needs to be arranged in the fluid pipelines to control the flow of the pipelines and realize throttling and pressure reduction of the fluid in the pipelines.

At present, the throttle valves do not have a flow negative feedback function and cannot compensate the unstable speed of an oil circuit caused by load change, so that two one-way throttle valves are mostly adopted to be reversely connected in series to meet the requirement of back-and-forth throttling and speed regulation of an execution element, and accordingly the oil flow in positive and negative directions is set to change the advancing and retreating speed of the execution element.

Although the setting of positive and negative two direction fluid flow can be realized to above-mentioned mode, because two one-way choke valves carry out the reverse series connection installation, not only make the installation and the maintenance of choke valve inconvenient, and make the noise too big in the working process, make equipment service environment's comfort level greatly reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel two-way choke valve makes the medium flow to the throttling characteristic of product right-hand member and hydraulic pressure from the throttling characteristic of product right-hand member flow direction product left end inequality, realizes setting for of two positive and negative direction medium flow.

For realizing the purpose of the utility model, the technical proposal adopted is that: a novel bidirectional throttle valve comprises a shell, wherein a piston cavity is formed in the shell, and a liquid inlet and a liquid outlet are respectively formed in two ends of the piston cavity; the piston cavity is also internally provided with a slidable valve core, one end of the valve core is provided with a plug for plugging the liquid inlet or the liquid outlet, the valve core is also provided with a central hole and a side hole in a penetrating manner, the central hole is coaxially arranged with the liquid inlet and the liquid outlet, one end of the side hole close to the plug deviates from the liquid inlet or the liquid outlet, and one end of the side hole far away from the plug converges with the central hole.

Furthermore, the plug is conical.

Furthermore, the diameter of the central hole is smaller than the diameter of the liquid outlet or the diameter of the liquid inlet close to the plug.

Furthermore, the side holes are multiple, and one ends of the side holes close to the plugs are dispersed around the valve core.

Furthermore, the valve core is hollow, one end of the valve core, which is far away from the plug, is open, and one ends of the central hole and the side holes, which are far away from the plug, are communicated with the interior of the valve core.

Furthermore, a valve and a valve seat are further arranged in the shell, a piston cavity is formed between the valve and the valve seat, and the liquid inlet and the liquid outlet are respectively positioned on the valve and the valve seat.

Furthermore, the opposite surfaces of the valve and the valve seat are provided with inserting pipes, and the two inserting pipes are inserted and fixed.

Further, still install two filter screen subassemblies in the casing, and two filter screen subassemblies are located the inlet outside and the liquid outlet outside respectively.

Furthermore, a limiting ring for limiting one of the filter screen assemblies and a pressing head for pressing the other filter screen assembly are arranged in the shell.

Furthermore, the pressing head and the shell are fixedly connected through threads.

The utility model has the advantages that,

the utility model discloses in, through the pressure differential of inlet and liquid outlet, drive the valve core and remove, when the medium pressure of inlet is greater than the medium pressure of liquid outlet, then the valve core removes to the liquid outlet, and make the end cap carry out the shutoff to the liquid outlet, at this moment, the medium that gets into through the inlet can only get into the liquid outlet through the centre bore, when the medium pressure of liquid outlet is greater than the medium pressure of inlet, then the valve core removes to the inlet, at this moment, side opening and centre bore simultaneously with the liquid outlet intercommunication, the medium that gets into through the liquid outlet then can get into the inlet through centre bore and side opening simultaneously.

The utility model makes the throttling characteristic that the medium flows from the left end of the product to the right end of the product different from the throttling characteristic that the hydraulic pressure flows from the right end of the product to the left end of the product, and realizes the setting of medium flow in the positive and negative directions; and simultaneously, the utility model discloses cancelled the use of spring, moved through medium difference drive valve core, made the removal of case sensitive rapidly more.

Through all installing the filter screen subassembly in inlet and liquid outlet outside, make the medium when getting into inlet back liquid outlet, the filter screen subassembly can effectively filter the medium to effectively prevent the case jam.

The utility model discloses simple structure, inner structure are compact, and throttle effectual, and are adapted to throttle speed governing return circuit or system, and the reliability is high.

Drawings

Fig. 1 is a structural diagram of the novel bidirectional throttle valve provided by the present invention.

Reference numbers and corresponding part names in the drawings:

1. the device comprises a shell, 2, a plug, 3, a valve core, 4, a valve, 5, a valve seat, 6, a filter screen assembly, 7, a piston cavity, 8, a liquid inlet, 9, a liquid outlet, 10, a central hole, 11, a side hole, 12, a plug pipe, 13, a limiting ring, 14 and a pressing head.

Detailed Description

The present invention will be described in further detail below with reference to specific embodiments and with reference to the accompanying drawings.

As shown in fig. 1, the utility model provides a pair of novel two-way choke valve, including casing 1, the external screw thread has all been seted up at the both ends of casing 1 outer wall, makes the utility model discloses installing can directly installing on the pipeline through threaded connection promptly, making the utility model discloses an installation is more convenient.

A piston cavity 7 is arranged in the shell 1, a liquid inlet 8 is arranged at one end of the piston cavity 7, a liquid outlet 9 is arranged at the other end of the piston cavity 7, a medium can flow to the liquid outlet 9 through the liquid inlet 8 and can also flow into the liquid inlet 8 through the liquid outlet 9, and the diameter of the liquid inlet 8 is different from that of the liquid outlet 9; still install slidable case 3 in the piston chamber 7, the inner wall of case 3 and the chamber wall sliding seal cooperation in piston chamber 7, the one end of case 3 has end cap 2 of shutoff inlet 8 or liquid outlet 9, end cap 2 and case 3 structure as an organic whole, and when case 3 removed in piston chamber 7, end cap 2 was close to or kept away from inlet 8 or liquid outlet 9, made inlet 8 open completely or by the shutoff.

The valve core 3 is also provided with a central hole 10 and a side hole 11 in a penetrating manner, and two ends of the central hole 10 and the side hole 11 both penetrate two end faces of the valve core 3, so that when the valve core 3 is positioned in the middle of the piston cavity 7, the liquid inlet 8 is communicated with the liquid outlet 9 through the central hole 10 and the side hole 11; the central hole 10 is coaxially arranged with the liquid inlet 8 and the liquid outlet 9, that is, the central axis of the central hole 10 is in the same straight line with the central axes of the liquid inlet 8 and the liquid outlet 9, so that even if the plug 2 plugs the liquid inlet 8 or the liquid outlet 9, the liquid inlet 8 and the liquid outlet 9 can be communicated through the central hole 10, and the medium can still flow.

The one end that side opening 11 is close to end cap 2 deviates from inlet 8 or liquid outlet 9, and the one end that side opening 11 kept away from end cap 2 converges with centre bore 10, makes end cap 2 when carrying out the shutoff to inlet 8 or liquid outlet 9, and the one end that side opening 11 is close to end cap 2 cuts off with inlet 8 or liquid outlet 9, and at this moment, the medium of inlet 8 and liquid outlet 9 then can not flow through side opening 11.

In the use process of the utility model, if the plug 2 on the valve core 3 is used for plugging the liquid outlet 9, then, when the medium pressure of the liquid inlet 8 is greater than the medium pressure of the liquid outlet 9, the valve core 3 moves to the liquid outlet 9 through the pressure difference, at the moment, the plug 2 plugs the liquid outlet 9, the outlet end of the side hole 11 is separated from the liquid outlet 9, the medium entering the piston cavity 7 through the liquid inlet 8 can only enter the liquid outlet 9 through the central hole 10, and the liquid outlet 9 flows; when the medium pressure of the liquid inlet 8 is smaller than the medium pressure of the liquid outlet 9, the valve core 3 moves towards the liquid inlet 8 through pressure difference, the plug 2 is far away from the liquid outlet 9, the outlet end of the side hole 11 is communicated with the liquid outlet 9, and at the moment, the medium of the liquid outlet 9 enters the piston cavity 7 and then simultaneously enters the liquid inlet 8 through the central hole 10 and the side hole 11 and flows along the liquid inlet 8.

The utility model discloses a common cooperation of end cap 2, side opening 11, centre bore 10 makes the medium flow to the throttle characteristic of product right-hand member and the throttle characteristic of hydraulic pressure from the product right-hand member flow direction product left end inequality from the product left end, realizes setting for of two positive and negative direction medium flow.

The plug 2 is conical, so that the plug 2 has a better plugging effect on the liquid inlet 8 or the liquid outlet 9, and the side hole 11 has a better cutting effect. The diameter of the central hole 10 is smaller than the diameter of the liquid outlet 9 or the diameter of the liquid inlet 8 close to the plug 2, so that the situation that the plug 2 cannot effectively plug the liquid inlet 8 or the liquid outlet 9 due to the fact that the diameter of the central hole 10 is too large is effectively avoided.

The side holes 11 are multiple, a plurality of side heads are uniformly distributed at intervals along the circumferential direction of the valve core 3, and one ends of the side holes 11, which are close to the plug 2, are dispersed around the valve core 3, so that the medium is effectively prevented from generating eddy currents when passing through the side holes 11, the resistance of the medium is smaller when the medium flows through the side holes 11, and the medium flows more smoothly.

The inside hollow form that is of case 3, the one end that end cap 2 was kept away from to case 3 is open and describes, and the one end that end cap 2 was kept away from to centre bore 10 and side opening 11 all with the inside intercommunication of case 3, the one end that makes centre bore 10 and side opening 11 converge has a cavity, is cut between side opening 11 and the inlet 8 when effectively avoiding case 3 to keep away from end cap 2 one end to support tightly at the exit end of inlet 8 to guarantee that the medium accessible side opening 11 communicates between inlet 8 and the liquid outlet 9 when the reverse flow.

A valve 4 and a valve seat 5 are further installed in the shell 1, a piston cavity 7 is formed between the valve 4 and the valve seat 5, and a liquid inlet 8 and a liquid outlet 9 are respectively located on the valve 4 and the valve seat 5; the opposite surfaces of the valve 4 and the valve seat 5 are provided with the inserting pipes 12, the inserting pipe 12 on the valve 4 and the valve 4 are integrally formed, the inserting pipe 12 on the valve seat 5 and the valve seat 5 are integrally formed, one of the inserting pipes 12 is inserted into the other inserting pipe 12, so that the inside of the inserting pipe 12 inserted into the other inserting pipe 12 is the piston cavity 7, the sealing performance of the piston cavity 7 is better, the installation positions of the valve 4 and the valve seat 5 are more conveniently fixed, and the assembly of the utility model is more convenient; meanwhile, the two insertion pipes 12 can be fixedly connected through threads, so that the connection between the valve 4 and the valve seat 5 is more stable.

Still install two filter screen subassemblies 6 in the casing 1, and two filter screen subassemblies 6 are located 8 outsides of inlet and 9 outsides of liquid outlet respectively, make the medium when getting into inlet 8 or liquid outlet 9, the medium can filter through filter screen subassembly 6, effectively prevents that impurity in the medium from causing the jam to central hole 10 or side opening 11 in entering into central hole 10 or side opening 11, makes the utility model discloses a life is longer.

Still have the spacing ring 13 of restriction one of them filter screen subassembly 6 in the casing 1 and compress tightly the clamp head 14 of another filter screen subassembly 6, make a filter screen subassembly 6 compressed tightly between spacing ring 13 and valve seat 5, another is compressed tightly between clamp head 14 and valve 4, makes the installation and the dismantlement of two filter screen subassemblies 6 more convenient, and is more convenient when making filter screen subassembly 6 need change.

The clamp head 14 is fixed through threaded connection with casing 1, has seted up the external screw thread on the clamp head 14 promptly, has seted up the internal thread on the 1 inner wall of casing, screws up clamp head 14 on casing 1, makes clamp head 14 realize fixed, and clamp head 14 is when screwing up, and clamp head 14 is compressed tightly between spacing ring 13 and clamp head 14 to two filter component, valve 4, valve seat 5 gradually, makes filter component, valve 4, valve seat 5's installation more convenient, and makes the utility model discloses an equipment is more convenient. In order to make the installation of the pressing head 14 more stable, after the pressing head 14 is screwed, punching points can be performed at the edge of the end face of the pressing head 14, so that the pressing effect of the pressing head 14 is better.

The utility model discloses when the equipment, earlier put into valve seat 5 with case 3 in, then peg graft on valve seat 5 with grafting pipe 12 on valve 4 on the grafting pipe 12, accomplish the assembly of 3 subassemblies of case, put into casing 1 with first filter assembly after that to in putting into casing 1 with 3 subassemblies of case, second filter assembly in proper order, it can to screw up the clamp head 14 at last.

The utility model discloses when using, the utility model discloses an installation direction and case 3's installation direction all can adjust according to the in-service use condition.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel bidirectional throttle valve is characterized by comprising a shell (1), wherein a piston cavity (7) is arranged in the shell (1), and a liquid inlet (8) and a liquid outlet (9) are respectively arranged at two ends of the piston cavity (7); still install slidable case (3) in piston chamber (7), the one end of case (3) has end cap (2) of shutoff inlet (8) or liquid outlet (9), and still runs through centre bore (10) and side opening (11) of seting up on case (3), centre bore (10) and inlet (8), liquid outlet (9) are coaxial arranges, the one end deviation inlet (8) or liquid outlet (9) that side opening (11) are close to end cap (2), the one end that end cap (2) were kept away from in side opening (11) converges with centre bore (10).

2. The new bidirectional throttling valve according to claim 1, characterized in that said plug (2) is conical.

3. A novel two-way throttle valve according to claim 1 or 2, characterized in that the diameter of the central hole (10) is smaller than the diameter of the liquid outlet (9) or the diameter of the liquid inlet (8) close to the plug (2).

4. The novel two-way throttle valve according to claim 1, characterized in that the side holes (11) are multiple, and one ends of the side holes (11) close to the choke plug (2) are all dispersed to the periphery of the valve core (3).

5. The novel two-way throttle valve according to claim 1, characterized in that the valve core (3) is hollow, one end of the valve core (3) far away from the choke plug (2) is open, and the ends of the central hole (10) and the side holes (11) far away from the choke plug (2) are communicated with the inside of the valve core (3).

6. The novel two-way throttle valve according to claim 1, characterized in that a valve (4) and a valve seat (5) are further installed in the housing (1), a piston cavity (7) is formed between the valve (4) and the valve seat (5), and the liquid inlet (8) and the liquid outlet (9) are respectively located on the valve (4) and the valve seat (5).

7. The novel two-way throttle valve according to claim 6, characterized in that the opposite surfaces of the valve (4) and the valve seat (5) are provided with insertion pipes (12), and the two insertion pipes (12) are inserted and fixed.

8. The novel two-way throttling valve according to claim 1, characterized in that two filter screen assemblies (6) are further installed in the housing (1), and the two filter screen assemblies (6) are respectively positioned outside the liquid inlet (8) and the liquid outlet (9).

9. A novel two-way throttling valve according to claim 8, characterized in that the housing (1) is also internally provided with a limiting ring (13) for limiting one of the screen assemblies (6) and a pressing head (14) for pressing the other screen assembly (6).

10. The novel two-way throttle valve according to claim 9, characterized in that the said compression head (14) is fixed with the housing (1) by screw thread connection.