CN212297098U

CN212297098U - Bidirectional throttle valve

Info

Publication number: CN212297098U
Application number: CN202022149116.5U
Authority: CN
Inventors: 薛传林
Original assignee: Jiangsu World High Tech Agricultural Equipment Co Ltd
Current assignee: Jiangsu World High Tech Agricultural Equipment Co Ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2021-01-05
Anticipated expiration: 2030-09-27

Abstract

The utility model provides a two-way throttle valve, which comprises a valve body and a valve core arranged in the valve body in a sliding way; the two ends of the valve core are respectively provided with a first throttling part and a second throttling part; a first throttling groove is formed in the outer side wall of the first throttling part; a second throttling groove is formed in the outer side wall of the second throttling part; the first throttling groove and the second throttling groove are distributed along the axial direction of the valve core. The utility model provides a two-way choke valve sets up two throttle grooves respectively through the both ends at the case to throttle through the throttle groove of difference respectively in two fluid flow directions, consequently set up respectively through the size to two throttle grooves, can realize controlling two ascending throttles, and then make hydraulic system have different throttle effects in the flow direction of difference.

Description

Bidirectional throttle valve

Technical Field

The utility model relates to a throttle technical field particularly, relates to a two-way choke valve.

Background

The hydraulic system usually controls the element by throttling, and the hydraulic system is throttled by a throttle hole at present; although the existing throttling hole can play a throttling role, the throttling hole is fixed in size, so that different throttling effects of liquid in different flow directions cannot be achieved.

SUMMERY OF THE UTILITY MODEL

The utility model provides a problem be that the orifice among the present hydraulic system can't realize having different throttle effects on different flow.

In order to solve the above problems, the utility model provides a two-way throttle valve, which comprises a valve body and a valve core arranged inside the valve body in a sliding way; wherein,

a first throttling part and a second throttling part are respectively arranged at two ends of the valve core;

a first throttling groove is formed in the outer side wall of the first throttling part;

a second throttling groove is formed in the outer side wall of the second throttling part;

the first throttling groove and the second throttling groove are distributed along the axial direction of the valve core. The first throttling groove and the second throttling groove are used for throttling the fluids in different flow directions respectively, so that the bidirectional throttling valve can have different throttling effects on the fluids in different flow directions by designing the first throttling groove and the second throttling groove respectively.

Optionally, the valve element further includes a flow guide portion, two ends of the flow guide portion are respectively connected to the first throttling portion and the second throttling portion, at least one fluid channel is arranged on an outer side wall of the flow guide portion, and the fluid channels are distributed along an axial direction of the valve element. Through set up fluid passage on the water conservancy diversion portion for fluid can get into corresponding throttle portion through the water conservancy diversion portion, throttles.

Optionally, when the number of the fluid channels is multiple, the multiple fluid channels are uniformly distributed on the outer side wall of the flow guide portion.

Optionally, the first throttling part and the second throttling part are both conical structures.

Optionally, a communicating portion is provided in the valve body, and an inner side wall of the communicating portion is adapted to be matched with an outer side wall of the valve core, so that the valve core is slidably disposed in the communicating portion.

Optionally, the flow guide is of cylindrical configuration.

Optionally, a first connection port and a second connection port are respectively arranged at two ends of the valve body, and the first connection port and the second connection port are both communicated with the communication part; the outer side wall of the first throttling part is suitable for being abutted against the inner side wall of the first connecting port, and the outer side wall of the second throttling part is suitable for being abutted against the inner side wall of the second connecting port, so that throttling in two directions is realized respectively.

Optionally, the valve further comprises a joint, wherein the joint is suitable for being inserted into the second connecting port to realize the connection of the joint and the valve body; a through hole is formed in the joint, and the outer side wall of the second throttling part is suitable for being abutted to the inner side wall of the through hole so as to achieve throttling.

Optionally, a first annular sealing structure is arranged on the first throttling part, and the first annular sealing structure is suitable for the first connecting port to be matched so as to improve the sealing effect between the first throttling part and the first connecting port; and a second annular sealing structure is arranged on the second throttling part and is suitable for the matching of the through holes so as to improve the sealing effect between the second throttling part and the through holes.

Optionally, a sealing gasket is further arranged between the joint and the valve body.

Compared with the prior art, the utility model provides a two-way choke valve has following advantage:

the utility model provides a two-way choke valve sets up two throttle grooves respectively through the both ends at the case to throttle through the throttle groove of difference respectively in two fluid flow directions, consequently set up respectively through the size to two throttle grooves, can realize controlling two ascending throttles, and then make hydraulic system have different throttle effects in the flow direction of difference.

Drawings

Fig. 1 is a schematic structural diagram of a two-way throttle valve when throttling is performed in a first throttling groove according to the present invention;

fig. 2 is a schematic structural diagram of a two-way throttle valve when throttling is performed in the second throttling groove according to the present invention;

fig. 3 is a schematic structural diagram of the valve core of the present invention;

fig. 4 is a cross-sectional view of the valve body and guide assembly structure of the present invention;

fig. 5 is a hydraulic schematic diagram of the two-way throttle valve of the present invention.

Description of reference numerals:

1-a valve body; 11-a communication portion; 12-a first connection port; 13-a second connection port; 2-a valve core; 21-a first throttle; 211-a first throttling groove; 212 — a first annular seal structure; 22-a second restriction; 221-a second throttle groove; 222 — a second annular seal structure; 23-a flow guide part; 231-a fluid channel; 3-a linker; 31-a through hole; 4-sealing gasket.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention, and all other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "first" and "second" are used merely for simplifying the description, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present disclosure, unless otherwise expressly stated or limited, a first feature "on" or "under" a first feature may comprise the first feature and a second feature in direct contact, or may comprise the first feature and the second feature not in direct contact but in contact with each other through another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. The first feature being "under," "below," and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or merely indicates that the first feature is at a lower level than the second feature.

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

In order to solve the problem that the throttle holes in the existing hydraulic system cannot achieve different throttling effects in different flow directions, the utility model provides a two-way throttle valve, which is shown in fig. 1 and 2 and comprises a valve body 1 and a valve core 2 arranged inside the valve body 1 in a sliding manner; the two ends of the valve core 2 are respectively provided with a first throttling part 21 and a second throttling part 22, so that the valve core 2 slides to corresponding positions in the valve body 1, and the first throttling part 21 and the second throttling part 22 at the two ends are respectively throttled to realize bidirectional throttling; specifically, a first throttle groove 211 is provided on the outer side wall of the first throttle section 21, a second throttle groove 221 is provided on the outer side wall of the second throttle section 22, and the fluid is throttled by passing through the first throttle groove 211 and the second throttle groove 221, respectively; in the present application, the first throttling groove 211 and the second throttling groove 221 are both distributed along the axial direction of the valve core 2, so that the fluid can be output from the valve body 1 after passing through the first throttling groove 211 and the second throttling groove 221 respectively; since the first throttle groove 211 and the second throttle groove 221 respectively throttle the two fluid flows in the two directions, the first throttle groove 211 and the second throttle groove 221 are preferably different in size, so that the bidirectional throttle valve has different throttling capacities for the two fluid flows in the two different directions.

Referring to fig. 1, when fluid flows in a direction from the second throttling part 22 to the first throttling part 21, the valve body 2 slides in the direction of the first throttling part 21 in the valve body 1 under the pushing of the fluid until the first throttling part 21 abuts against the valve body 1, and the fluid flows out of the valve body 1 through the first throttling groove 211 on the outer side wall of the first throttling part 21, namely, the throttling is realized through the first throttling groove 211.

Similarly, referring to fig. 2, when fluid flows in a direction from the first throttle portion 21 to the second throttle portion 22, the valve body 2 slides in the valve body 1 in a direction toward the second throttle portion 22 under the urging of the fluid until the second throttle portion 22 abuts against the valve body 1, and the fluid flows out of the valve body 1 through the second throttle groove 221 on the outer side wall of the second throttle portion 22, that is, the fluid is throttled by the second throttle groove 221.

It can be seen that the first throttling groove 211 and the second throttling groove 221 respectively throttle the fluid in two flowing directions, wherein the throttling effect in a certain direction is determined according to the sectional area of the throttling groove corresponding to the direction; because the first throttling groove 211 and the second throttling groove 221 are two groove-shaped structures which are independently arranged, the shapes and the sizes of the first throttling groove 211 and the second throttling groove 221 can be independently arranged according to the throttling requirements in the flowing direction of the fluid, and the shapes and the sizes, namely the sizes of the cross sections, of the first throttling groove 211 and the second throttling groove 221 can be the same or different; to achieve different throttling effects in different fluid flow directions, it is preferred that the cross-sectional areas of the first throttling groove 211 and the second throttling groove 221 are different.

The utility model provides a two-way choke valve sets up two throttle grooves respectively through the both ends at case 2 to throttle through the throttle groove of difference respectively in two fluid flow directions, consequently set up respectively through the size to two throttle grooves, can realize controlling two ascending throttles, and then make hydraulic system have different throttle effects in the flow direction of difference.

Referring to fig. 3, the valve element 2 in the present application further includes a flow guiding portion 23, two ends of the flow guiding portion 23 are respectively connected to the first throttling portion 21 and the second throttling portion 22, at least one fluid channel 231 is disposed on an outer side wall of the flow guiding portion 23, and the fluid channels 231 are distributed along an axial direction of the valve element 2, so that after entering the valve body 1, a fluid enters a corresponding throttling groove through the flow guiding portion 23 to realize throttling; in the present application, the cross-sectional area of the fluid channel 231 is preferably larger than the cross-sectional areas of the first throttle groove 211 and the second throttle groove 221, so that there is no throttling effect when the fluid passes through the fluid channel 231, and the throttling can be controlled by controlling the structures and the sizes of the first throttle groove 211 and the second throttle groove 221; in addition, by increasing the sectional area of the fluid passage 231, clogging of the two-way throttle valve during throttling can also be avoided.

In order to improve the throttling effect, when the number of the fluid passages 231 is plural, the plural fluid passages 231 are uniformly distributed on the outer side wall of the flow guide portion 23.

Wherein the specific number of the fluid passages 231 is determined according to the requirement of the two-way throttle valve and the sectional area of the fluid passages 231, the number of the fluid passages 231 is preferably 3 in the present application.

In order to ensure the throttling effect, the first throttling part 21 and the second throttling part 22 are preferably in a conical structure, so that the cross sectional area of each of the first throttling part 21 and the second throttling part 22 is smaller and smaller in the direction away from the flow guide part 23.

In order to realize that case 2 slides in valve body 1, be provided with intercommunication portion 11 in the valve body 1 in this application, the inside wall of this intercommunication portion 11 is suitable for and cooperatees with the lateral wall of case 2 to make case 2 slide and set up in intercommunication portion 11.

Specifically, when the first throttling portion 21 and the second throttling portion 22 are both conical structures, the inner side wall of the communicating portion 11 is adapted to be matched with the outer side wall of the flow guiding portion 23 in the valve element 2, as shown in fig. 4, when the valve element 2 slides in the communicating portion 11, the outer side wall of the flow guiding portion 23 is attached to the inner side wall of the communicating portion 11, and the fluid flows through the fluid channel 231 on the flow guiding portion 23.

The shape of the flow guide part 23 is matched with the shape of the inner wall of the communication part 11; the flow guide portion 23 is preferably cylindrical, and the communication portion 11 is also cylindrical.

Further, in the present application, a first connection port 12 and a second connection port 13 are respectively disposed at two ends of the valve body 1, and both the first connection port 12 and the second connection port 13 are communicated with the communication portion 11; the outer side wall of the first throttling part 21 is suitable for abutting against the inner side wall of the first connecting port 12, and the outer side wall of the second throttling part 22 is suitable for abutting against the inner side wall of the second connecting port 13, so that throttling in two directions is realized respectively.

Wherein fluid can enter the valve body 1 from the first connecting port 12 and can also enter the valve body 1 from the second connecting port 13; meanwhile, the distribution direction of the valve core 2 in the valve body 1 can be set randomly; in the present application, it is preferable that the valve body 1 is provided with the valve body 2, the first throttling portion 21 is provided at an end close to the first connection port 12, and the second throttling portion 22 is provided at an end close to the second connection port 13; when fluid enters from the second connecting port 13, the valve core 2 is pushed to slide towards one end close to the first connecting port 12 until the outer side wall of the second throttling part 22 on the valve core 2 is abutted with the inner side wall of the first connecting port 12, and the valve core 2 stops sliding; at this time, the fluid is throttled by the first throttling groove 211; when fluid enters from the first connecting port 12, the valve core 2 is pushed to slide towards one end close to the second connecting port 13 until the outer side wall of the first throttling part 21 on the valve core 2 is abutted with the inner side wall of the second connecting port 13, and the valve core 2 stops sliding; at this time, the fluid is throttled by the second throttle groove 221.

In order to facilitate connection with other components, the two-way throttle valve provided by the application further comprises a joint 3, wherein the joint 3 is suitable for being inserted into the second connecting port 13 to realize connection of the joint 3 with the valve body 1; a through hole 31 is provided in the joint 3, and an outer side wall of the second throttling part 22 is adapted to abut against an inner side wall of the through hole 31 to realize throttling.

In a specific throttling process, referring to fig. 1, when fluid flows in a direction from the second throttling part 22 to the first throttling part 21, the valve element 2 slides in the communicating part 11 in the direction of the first throttling part 21 under the pushing of the fluid until the outer side wall of the first throttling part 21 is contacted with the inner side wall of the first connecting port 12, the second throttling part 22 is not contacted with the through hole 31, and the second throttling groove 221 on the second throttling part 22 does not play a throttling role; after passing through the second throttling part 22, the fluid passes through the fluid channel 231 on the flow guide part 23 and enters the first throttling part 21; since the outer side wall of the first throttle portion 21 abuts against the inner side wall of the first connection port 12, the fluid can only pass through the first throttle groove 211, and thus the throttling is performed by the first throttle groove 211.

Similarly, referring to fig. 2, when the fluid flows in the direction from the first throttle portion 21 to the second throttle portion 22, the valve body 2 slides in the direction of the second throttle portion 22 in the communication portion 11 under the urging of the fluid until the outer side wall of the second throttle portion 22 abuts against the inner side wall of the through hole 31, the first throttle portion 21 does not abut against the first connection port 12, and the first throttle groove 211 in the first throttle portion 21 does not perform the throttling function; after passing through the first throttling part 21, the fluid enters the second throttling part 22 after passing through the fluid channel 231 on the flow guide part 23; since the outer side wall of the second throttle portion 22 abuts against the inner side wall of the through hole 31, the fluid can pass only through the second throttle groove 221, and the throttle is realized by the second throttle groove 221.

The abutting position of the first throttling part 21 and the first connecting port 12 and the abutting position of the second throttling part 22 and the through hole 31 are determined according to the shape of the first throttling part 21, the size of the first connecting port 12, the shape of the second throttling part 22 and the size of the through hole 31, and a first annular sealing structure 212 is preferably arranged at the position, abutting against the first connecting port 12, of the first throttling part 21, and the first annular sealing structure 212 is suitable for being matched with the first connecting port 12 to improve the sealing effect between the first throttling part 21 and the first connecting port 12; the second throttling part 22 is provided with a second annular sealing structure 222 at a position abutting against the through hole 31, and the second annular sealing structure 222 is adapted to cooperate with the through hole 31 to improve the sealing effect between the second throttling part 22 and the through hole 31.

Further, the present application preferably further provides a sealing gasket 4 between the joint 3 and the valve body 1, so as to increase the sealing performance between the joint 3 and the valve body 1 through the sealing gasket.

To sum up, see that fig. 5 shows, the utility model provides a two-way choke valve through first throttle portion 21 and the second throttle portion 22 of designing the toper structure respectively at the both ends of case 2 to set up first throttle groove 211 and second throttle groove 221 respectively on first throttle portion 21 and second throttle portion 22, throttle for the ascending fluid of two flow directions respectively through first throttle groove 211 and second throttle groove 221, thereby make the utility model provides a two-way choke valve can design through respectively first throttle groove 211 and second throttle groove 221, realizes carrying out the independent control to the fluidic throttle in two flow directions, improves the flexibility of using, enlarges application range.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and such changes and modifications will fall within the scope of the present invention.

Claims

1. The bidirectional throttle valve is characterized by comprising a valve body (1) and a valve core (2) arranged in the valve body (1) in a sliding manner; wherein,

a first throttling part (21) and a second throttling part (22) are respectively arranged at two ends of the valve core (2);

a first throttling groove (211) is formed in the outer side wall of the first throttling part (21);

a second throttling groove (221) is formed in the outer side wall of the second throttling part (22);

the first throttling groove (211) and the second throttling groove (221) are distributed along the axial direction of the valve core (2).

2. The two-way throttle valve according to claim 1, wherein the spool (2) further comprises a flow guide portion (23), both ends of the flow guide portion (23) are respectively connected to the first throttling portion (21) and the second throttling portion (22), at least one fluid passage (231) is provided on an outer side wall of the flow guide portion (23), and the fluid passages (231) are distributed along an axial direction of the spool (2).

3. The two-way throttle valve according to claim 2, wherein when the number of the fluid passages (231) is plural, the plural fluid passages (231) are uniformly distributed on the outer side wall of the flow guide portion (23).

4. The two-way throttle valve according to claim 2 or 3, characterized in that the first throttle section (21) and the second throttle section (22) are both of conical configuration.

5. The two-way throttle valve according to claim 4, characterized in that a communication portion (11) is provided in the valve body (1), and the inner side wall of the communication portion (11) is adapted to cooperate with the outer side wall of the valve spool (2) so that the valve spool (2) is slidably provided in the communication portion (11).

6. The two-way throttle valve according to claim 5, characterized in that the flow guide (23) is of cylindrical configuration.

7. The two-way throttle valve according to claim 6, characterized in that a first connecting port (12) and a second connecting port (13) are respectively arranged at two ends of the valve body (1), and the first connecting port (12) and the second connecting port (13) are communicated with the communicating part (11); the outer side wall of the first throttling part (21) is suitable for being abutted against the inner side wall of the first connecting port (12), and the outer side wall of the second throttling part (22) is suitable for being abutted against the inner side wall of the second connecting port (13), so that throttling in two directions is realized respectively.

8. The two-way throttle valve according to claim 7, characterized by further comprising a joint (3), said joint (3) being adapted to be inserted into said second connection port (13) to effect the connection of said joint (3) with said valve body (1); a through hole (31) is formed in the joint (3), and the outer side wall of the second throttling part (22) is suitable for being abutted to the inner side wall of the through hole (31) so as to realize throttling.

9. The two-way throttle valve according to claim 8, characterized in that a first annular sealing structure (212) is provided on said first throttle section (21), said first annular sealing structure (212) being adapted to cooperate with said first connection port (12) to enhance the sealing effect between said first throttle section (21) and said first connection port (12); and a second annular sealing structure (222) is arranged on the second throttling part (22), and the second annular sealing structure (222) is suitable for the matching of the through hole (31) so as to improve the sealing effect between the second throttling part (22) and the through hole (31).

10. The two-way throttle valve according to claim 8, characterized in that a sealing gasket (4) is further arranged between the joint (3) and the valve body (1).