CN220396512U - Micro flow regulating valve - Google Patents

Abstract

The utility model discloses a micro flow regulating valve, which relates to the technical field of flow regulating valves, and comprises a valve body and a valve core rod, wherein connecting ports are arranged at two ends of the valve body, an inner cavity is arranged in the valve body, and after the valve core rod is matched with a valve seat, the valve core rod moves up and down to cause the area of a V-shaped port on the valve core rod to change, so that flow control is realized; the valve body and the valve cover adopt a fastening structure in a threaded and spigot positioning mode, so that the matching precision is high; the guide sleeve and the valve cover are in a hot-mounting mode, the guide sleeve is fixed in the valve cover, and the guide sleeve and the valve cover are synchronously processed, so that the concentricity is high; the valve body and the valve cage adopt a fastening structure in a threaded and spigot positioning mode, so that the matching precision is high; the valve cage is internally and fixedly connected with the valve cage through a fixing ring in a threaded manner, the spring is further compressed, the pre-tightening force of the spring acts on the valve seat pressing cover and is transmitted to the valve seat, so that the valve core rod is tightly matched with the valve seat to achieve sealing; the valve core rod is superfinished, and the valve core rod is matched with the valve seat to realize reliable sealing, thereby achieving zero leakage.

Description

Micro flow regulating valve

Technical Field

The utility model relates to the technical field of flow regulating valves, in particular to a micro flow regulating valve.

Background

A device for opening, closing or partially blocking one or more openings or passages by means of a movable member, allowing a liquid, air or other gas flow or bulk material to flow out, block or be conditioned; also referred to as a valve cartridge, the movable part of this device;

in the utility model with the publication number of CN218236166U, a regulating valve which is convenient to regulate and use is designed, a driving motor is used for driving a rotary rod to rotate, a worker does not need to manually rotate the rotary rod, and the worker can conveniently regulate the opening and closing size of a convection opening of the device according to the use condition, but in the process of using a valve body, the regulation of micro flow is needed, so that the regulation between a sealing plug and the convection hole in the regulating valve in the prior art is caused to control the circulation of fluid in a large opening and closing mode, the fluid flow cannot be controlled in a micro regulation mode, and when the rotary rod rotates, the rotary rod cannot achieve good sealing, and the fluid is leaked in the valve body.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a micro flow regulating valve, which solves the technical problems that the flow of fluid is controlled in a large opening and closing mode by regulating a sealing plug and a convection hole in the existing regulating valve, the flow of the fluid cannot be controlled in a micro regulating mode, and a rotating rod cannot achieve good sealing when rotating, so that the fluid is leaked in a valve body.

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the utility model provides a micro flow control valve, includes valve body and valve core bar, the valve body both ends are equipped with the connection port, be equipped with the inner chamber in the valve body, the valve body upper end is equipped with the port, the port communicates with each other with the inner chamber, a pair of connecting channel has been seted up in the valve body, connecting channel intercommunication connection port and inner chamber, be equipped with the valve cage subassembly in the inner chamber, the port screwed connection has the valve gap, the lower extreme is equipped with the uide bushing in the valve gap, the valve gap upper end is open structure, be equipped with the packing pad in the valve gap upper end, the packing pad has been packed on the packing pad, the valve gap upper end cover is equipped with the packing gland, the case pole runs through packing gland, packing, valve gap, uide bushing, valve cage subassembly, the case pole lower extreme is equipped with V type mouth.

Preferably, the valve cage assembly comprises a valve cage, the valve cage is screwed in the inner cavity, a valve seat is arranged in the valve cage, a valve seat gland is arranged on the valve seat, a fixing ring is screwed at the upper end of the valve cage, a spring is arranged between the fixing ring and the valve seat gland, and the spring is sleeved on the valve core rod.

Preferably, a valve cage sealing gasket is arranged between the inner cavity and the valve cage.

Preferably, balance holes are formed in the guide sleeve, and the balance holes are formed in two sides of the valve core rod.

Preferably, a valve cover sealing gasket is arranged between the valve cover and the valve body.

Preferably, the connecting channels are obliquely arranged in the valve body, and a pair of the connecting channels are parallel to each other.

Advantageous effects

The utility model provides a micro flow regulating valve, which solves the technical problems that the flow of fluid is controlled in a large opening and closing mode by regulating a sealing plug and a convection hole in the existing regulating valve, the flow of the fluid cannot be controlled in a micro regulating mode, and when a rotary rod rotates, good sealing is not achieved, so that the fluid leaks in a valve body; the valve body and the valve cover adopt a fastening structure in a threaded and spigot positioning mode, so that the matching precision is high; the guide sleeve and the valve cover are in a hot-mounting mode, the guide sleeve is fixed in the valve cover, and the guide sleeve and the valve cover are synchronously processed, so that the concentricity is high; the valve body and the valve cage adopt a fastening structure in a threaded and spigot positioning mode, so that the matching precision is high; the valve cage is internally and fixedly connected with the valve cage through a fixing ring in a threaded manner, the spring is further compressed, the pre-tightening force of the spring acts on the valve seat pressing cover and is transmitted to the valve core rod, and the valve core rod is tightly matched with the valve seat to achieve sealing; the valve core rod is superfinished, and the valve core rod is matched with the valve seat to realize reliable sealing, thereby achieving zero leakage.

Drawings

Fig. 1 is a schematic structural diagram of a micro flow regulating valve according to the present utility model.

FIG. 2 is a schematic view of a cage assembly of a micro flow control valve according to the present utility model.

Fig. 3 is a schematic diagram of a guide sleeve structure of a micro flow control valve according to the present utility model.

Fig. 4 is a schematic view of the V-shaped port structure of the valve core rod of the micro flow regulating valve according to the present utility model.

In the figure: 1. a valve body; 2. a guide sleeve; 3. a valve cover gasket; 4. a valve cover; 5. a valve core rod; 6. a filler pad; 7. a filler; 8. a packing gland; 9. a valve cage; 10. a fixed ring (11) and a spring; 12. a valve seat gland; 13. a valve seat; 14. a cage seal; 51. valve core rod V-shaped port; 52. balance holes.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution: the utility model provides a micro flow control valve, includes valve body 1 and case pole 5, valve body 1 both ends are equipped with the connection port, be equipped with the inner chamber in the valve body 1, valve body 1 upper end is equipped with the port, the port communicates with each other with the inner chamber, a pair of connecting channel has been seted up in the valve body 1, connecting channel intercommunication connection port and inner chamber, be equipped with the valve cage subassembly in the inner chamber, the port screwed connection has valve gap 4, the lower extreme is equipped with uide bushing 2 in the valve gap 4, valve gap 4 upper end is open structure, be equipped with packing pad 6 in the valve gap 4 upper end, packing 7 has been packed on the packing pad 6, valve gap 4 upper end cover is equipped with packing gland 8, case pole 5 runs through packing gland 8, packing 7, valve gap 4, uide bushing 2, valve cage subassembly, the case pole lower extreme is equipped with V type mouth 51.

The embodiment is further arranged in that the valve cage assembly comprises a valve cage 9, the valve cage 9 is screwed in an inner cavity, a valve seat 13 is arranged in the valve cage 9, a valve seat gland 12 is arranged on the valve seat 13, a fixed ring 10 is screwed at the upper end of the valve cage 9, a spring 11 is arranged between the fixed ring 10 and the valve seat gland 12, and the spring 11 is sleeved on the valve core rod 5;

the pre-tightening force is increased between the valve seat gland and the fixed ring by adopting the spring, and the pressure is provided for the spring by continuously applying the screw tightening force of the fixed ring, so that the valve seat gland can continuously provide the pressure for the valve seat, and the tight sealing between the valve seat and the valve core rod is ensured.

The present embodiment is further configured such that a cage seal 14 is mounted between the inner chamber and the cage 9.

The present embodiment is further configured that a balance hole 52 is provided in the guide sleeve 2, and the balance hole 52 is located at two sides of the valve core rod 5.

The embodiment is further provided that a valve cover sealing gasket 3 is arranged between the valve cover 4 and the valve body.

The embodiment is further configured such that the connecting channels are obliquely arranged in the valve body 1, and a pair of the connecting channels are parallel to each other.

The detailed connection means are known in the art, and the following mainly describes the working principle and process, and the specific work is as follows.

Examples: according to the attached drawings, when the valve is used, the height of the valve core rod is regulated (the height regulation of the valve core rod belongs to the technical common sense known by the person skilled in the art, the valve core rod can be driven by an external electric or pneumatic actuator), the valve core rod moves upwards, the valve seat tightly holds the valve core rod under the downward pressure of the fixed ring, the spring and the valve seat gland, and a gap is formed between a V-shaped opening of the valve core rod on the valve core rod and the valve seat along with the upward movement of the valve core rod, so that the flow control is realized through the area change of the V-shaped opening on the valve core rod.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

Claims (6)

1. The utility model provides a small flow control valve, includes valve body (1) and case pole (5), its characterized in that, valve body (1) both ends are equipped with the connection port, be equipped with the inner chamber in valve body (1), valve body (1) upper end is equipped with the port, the port communicates with each other with the inner chamber, a pair of connecting channel has been seted up in valve body (1), connecting channel intercommunication connection port and inner chamber, be equipped with valve cage subassembly in the inner chamber, the valve gap (4) have been connect soon to the port, the lower extreme is equipped with uide bushing (2) in valve gap (4), valve gap (4) upper end is open structure, be equipped with packing pad (6) in valve gap (4) upper end, packing (7) have been packed on packing pad (6), valve gap (4) upper end cover is equipped with packing gland (8), case pole (5) run through packing gland (8), packing (7), valve gap (4), uide bushing (2), valve cage subassembly, the valve core pole lower extreme is equipped with V type mouth (51).

2. The micro flow regulating valve according to claim 1, wherein the valve cage assembly comprises a valve cage (9), the valve cage (9) is screwed in the inner cavity, a valve seat (13) is installed in the valve cage (9), a valve seat gland (12) is installed on the valve seat (13), a fixing ring (10) is screwed at the upper end of the valve cage (9), a spring (11) is installed between the fixing ring (10) and the valve seat gland (12), and the spring (11) is sleeved on the valve core rod (5).

3. A micro-valve as claimed in claim 2, wherein a cage seal (14) is provided between the inner chamber and the cage (9).

4. The micro flow regulating valve according to claim 1, wherein the guide sleeve (2) is internally provided with balance holes (52), and the balance holes (52) are positioned at two sides of the valve core rod (5).

5. A micro-flow regulating valve according to claim 1, characterized in that a valve cover gasket (3) is mounted between the valve cover (4) and the valve body (1).

6. A micro flow regulating valve according to claim 1, wherein said connecting channels are obliquely opened in the valve body (1), and a pair of said connecting channels are parallel to each other.