CN210949938U

CN210949938U - Precision proportional valve

Info

Publication number: CN210949938U
Application number: CN201921309379.9U
Authority: CN
Inventors: 罗勋华
Original assignee: Wenzhou Omar Automatic Control Equipment Manufacturing Co ltd
Current assignee: Wenzhou Omar Automatic Control Equipment Manufacturing Co ltd
Priority date: 2019-08-13
Filing date: 2019-08-13
Publication date: 2020-07-07
Anticipated expiration: 2029-08-13

Abstract

The utility model relates to a precision proportional valve, including cylinder, support, valve body, case and valve rod, the cylinder passes through the support setting on the valve body, and the one end of valve rod stretches into in the valve pocket of valve body and links to each other with the case, and the other end links to each other with the output shaft of cylinder, is equipped with the discharge gate with the valve pocket intercommunication on the valve body, and the valve pocket bottom is provided with the connector that has the internal screw thread, the connector on threaded connection have the inlet pipe that has feedstock channel, feedstock channel's upper end is equipped with the valve port, the case includes linkage segment and the case main part of lower extreme of upper end, is equipped with the dovetail on the linkage segment, the dovetail is embedded to have the sealing ring, when. The valve core is provided with the sealing ring, when the valve is closed, the sealing ring can just block the discharge hole and is in sealing fit with the valve core and the valve port, the double sealing effect is achieved, medium leakage is avoided, and the sealing performance point of the invention is improved.

Description

Precision proportional valve

Technical Field

The utility model relates to a proportional valve, concretely relates to precision proportional valve.

Background

The proportional valve is generally used before product assembly, is a novel valve body for timing, quantifying, accurately filling and coating grease at the positions of a shaft, a bearing, a gear, a cam and the like with friction pairs, and has the characteristics of high integration level, convenience in installation, simplicity and convenience in maintenance, high automation degree, low labor intensity, stable performance, convenience in oil filling and the like. The electric toy is widely applied to assembly production lines of electric toys, electric tools, household appliances, automobile parts and the like at present.

The existing proportional valve mainly depends on a valve port and a valve core which are matched with each other, when the proportional valve is applied to pressure liquid or gas, the problem of leakage is easy to occur by a single sealing means, and the sealing performance is difficult to guarantee.

SUMMERY OF THE UTILITY MODEL

To the not enough in the background art, the utility model provides a precision ration valve.

The utility model adopts the technical proposal that: the utility model provides a precision proportional valve, includes cylinder, support, valve body, case and valve rod, the cylinder pass through the support setting on the valve body, the one end of valve rod stretch into in the valve pocket of valve body and link to each other with the case, the other end links to each other with the output shaft of cylinder, the valve body on be equipped with the discharge gate with the valve pocket intercommunication, valve pocket bottom be provided with and have the internal screw thread connector, the connector on threaded connection have the inlet pipe that has feedstock channel, feedstock channel's upper end is equipped with the valve port, the case include linkage segment and the case main part of lower extreme of upper end, the linkage segment on be equipped with the dovetail, the dovetail is embedded to have the sealing ring, when the case is gone down the proportional valve and is in the closed condition, above.

Furthermore, the valve port and the valve core main body are in a conical structure or a bowl-shaped structure.

Furthermore, a first flange plate is arranged at the top of the connecting section, and a second flange plate is arranged at one end, extending into the valve cavity, of the valve rod.

Further, the sealing ring comprises a dovetail connecting ring of the inner ring and a sealing ring of the outer ring, and the outer end face of the sealing ring is of an arc-shaped structure.

Further, the sealing ring is made of elastic rubber.

The utility model has the advantages that: the utility model discloses a set up the sealing washer on the case, when the valve was closed, the discharge gate just in time can be plugged up to the sealing washer, with the sealed cooperation of case and valve port, played the double seal effect, avoided the medium leakage, improved the sealing performance of invention, had simple structure, advantage convenient to use.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided.

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

Drawings

Fig. 1 is a schematic view of a valve closed state.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is a schematic view of the valve in an open state.

In the figure: 1. a cylinder; 2. a support; 3. a valve body; 4. a valve core; 5. a valve stem; 6. a discharge port; 7, a connecting port; 8. a feed channel; 9. a feed pipe; 10. a valve port; 11. a connecting section; 12. a valve core main body; 13. a dovetail groove; 14. a seal ring; 15. a first method is connected with a disc; 16. a second flange plate; 17. dovetail connection rings; 18. and (4) a sealing ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

The utility model provides a precision proportional valve.

In this embodiment, referring to fig. 1 to 3, the precision proportional valve includes a cylinder 1, a support 2, a valve body 3, a valve core 4 and a valve rod 5, the cylinder 1 is disposed on the valve body 3 through the support 2, one end of the valve rod extends into a valve cavity of the valve body and is connected to the valve core, the other end of the valve rod is connected to an output shaft of the cylinder, the valve body is provided with a discharge port 6 communicated with the valve cavity, a connection port 7 with an internal thread is disposed at the bottom of the valve cavity, the connection port 7 is in threaded connection with a feed pipe 9 with a feed channel 8, and the upper end of the feed channel is provided with a valve port 10;

the valve is after long-term, and last valve port of charge channel and the long-term effect of case, and the valve port is worn and torn easily to sealing performance between valve port and the case descends, appears leaking the problem, because the inlet pipe of the valve among the prior art is the integrated into one piece structure with the valve body, the inlet pipe can not be changed, leads to whole valve to scrap, the utility model discloses integrate the valve port on the inlet pipe to adopt threaded connection with inlet pipe and valve body, can change the inlet pipe alone, avoid causing the unnecessary loss.

The valve core 4 comprises a connecting section 11 at the upper end and a valve core main body 12 at the lower end, wherein a dovetail groove 13 is arranged on the connecting section 11, a sealing ring 14 is embedded in the dovetail groove 13, and when the valve core drives the proportional valve to be in a closed state, the sealing ring just plugs the discharge hole.

The upper end of the valve core is prolonged, the sealing ring is additionally arranged on the valve core, when the valve is closed, the sealing ring on the valve core is just blocked on the discharge hole, the double sealing effect is achieved through the sealing matching of the sealing ring and the valve core, and the problem of medium leakage is avoided.

Specifically, the valve port and the valve core main body are in a conical structure or a bowl-shaped structure. The valve core of the conical structure can play a good guiding role, and the smoothness of the valve closing is improved.

Specifically, a first flange 15 is arranged at the top of the connecting section 11, and a second flange 16 is arranged at one end of the valve rod extending into the valve cavity. Present case and valve rod adopt welded form more, and the case can not follow the trade, the utility model discloses adopt the ring flange to be connected between case and the valve rod, the change after the case wearing and tearing of being convenient for.

Specifically, the sealing ring comprises a dovetail connecting ring 17 of an inner ring and a sealing ring 18 of an outer ring, and the outer end surface of the sealing ring is of an arc structure; the sealing ring is made of elastic rubber. The outer end face of the arc-shaped structure is convenient for the sealing ring to slide in and out from the discharge hole, and the smoothness of the opening and closing of the valve is improved.

The utility model discloses a set up the sealing washer on the case, when the valve was closed, the discharge gate just in time can be plugged up to the sealing washer, with the sealed cooperation of case and valve port, played the double seal effect, avoided the medium leakage, improved the sealing performance of invention, had simple structure, advantage convenient to use.

The skilled person should understand that: although the present invention has been described in terms of the above embodiments, the inventive concepts are not limited to the embodiments, and any modifications that utilize the inventive concepts are intended to be included within the scope of the appended claims.

Claims

1. The utility model provides a precision proportional valve, includes cylinder, support, valve body, case and valve rod, the cylinder pass through the support setting on the valve body, the one end of valve rod stretch into in the valve pocket of valve body and link to each other with the case, the other end links to each other with the output shaft of cylinder, the valve body on be equipped with the discharge gate that communicates with the valve pocket, its characterized in that: the valve cavity bottom be provided with the connector that has the internal screw thread, the connector on threaded connection have the inlet pipe that has feedstock channel, feedstock channel's upper end is equipped with the valve port, the case include linkage segment and the case main part of lower extreme of upper end, the linkage segment on be equipped with the dovetail, the dovetail is embedded to have the sealing ring, when the case is down to use the proportional valve in the closed condition, above-mentioned discharge gate is just in time blocked up to the sealing ring.

2. Precision dosing valve according to claim 1, characterized in that: the valve port and the valve core main body are in a conical structure or a bowl-shaped structure.

3. Precision dosing valve according to claim 2, characterized in that: the top of linkage segment is equipped with first ring flange, the valve rod stretch into one of valve intracavity and serve and be equipped with the second ring flange.

4. Precision dosing valve according to any of claims 1-3, characterized in that: the sealing ring comprises a dovetail connecting ring of an inner ring and a sealing ring of an outer ring, and the outer end face of the sealing ring is of an arc-shaped structure.

5. Precision dosing valve according to claim 4, characterized in that: the sealing ring is made of elastic rubber.