Flow control check valve

Abstract

The utility model relates to a flow control check valve, including valve seat, valve body, valve core and flow sheet, be equipped with valve port and conical intercepting port in valve seat, valve body includes the sleeve joint of can be covered on valve seat, the sliding core part of sliding valve core in it, and the fluid pipe connecting part for with fluid pipe sleeve joint, sliding core part and fluid pipe connecting part form the valve core stop platform for limiting the maximum stroke when valve core opens flow at junction, valve core sets in the sliding core part of the valve body and can axial sliding along the hole wall of the sliding core part, valve core is hollow cavity shape, including conical head and valve core body, conical head includes the intercepting part that can enter the intercepting port and can block in the intercepting port, and the discharge part that is blocked outside intercepting port, be equipped with discharge hole on the discharge part, flow sheet is fixed in valve seat, and it is with valve core and is located the two sides of valve port respectively, be equipped with flow hole on flow sheet. The utility model discloses more reasonable structure, help to reduce cost when producing various flow specifications check valve.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration technology, specifically to a flow control check valve used in refrigeration equipment. Background Technology

[0002] Flow-controlled check valves are commonly used in various refrigeration equipment to control fluid flow. A typical flow-controlled check valve consists of a valve body, a valve core, and a valve seat. The valve seat is fixed within the valve body, while the valve core is movable within the valve body. When the valve core rests against the valve seat, it seals and isolates both sides of the valve body, achieving flow control. When the valve core moves away from the valve seat, the fluid flows through the valve seat's orifice to the valve body, achieving unidirectional fluid control. It can be seen that the fluid flow rate is mainly determined by the size of the valve seat's orifice. Therefore, for refrigeration equipment with varying flow requirements, valve seats with different orifice sizes must be manufactured to meet the needs. Because the valve seat is relatively complex to manufacture, the production cost of check valves with multiple flow rate specifications is high. Therefore, it is necessary to improve the current check valve structure. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a flow control check valve with a more reasonable structure that helps reduce costs when producing check valves with various flow specifications.

[0004] To solve the aforementioned technical problems, this utility model adopts the following technical solution:

[0005] A flow control check valve includes a valve seat, a valve body, a valve core, and a flow vane, wherein:

[0006] The valve seat is provided with a valve port and a conical shut-off port;

[0007] The valve body is tubular and includes a sleeve portion that can be fitted onto the valve seat, a sliding core portion that allows the valve core to slide within it, and a fluid pipe connection portion for fitting with a fluid pipe; the sleeve portion and the sliding core portion have the same orifice diameter, but the sliding core portion has a larger orifice diameter than the fluid pipe connection portion; the sliding core portion and the fluid pipe connection portion form a valve core stop at the joint to limit the maximum stroke of the valve core when it is open.

[0008] The valve core is disposed within the sliding core portion of the valve body and can slide axially along the hole wall of the sliding core portion; the valve core is a hollow cavity shape, which includes a conical head and a valve core body; the conical head includes a choking portion that can enter the choking port and block the choking port, and a drain portion that is blocked outside the choking port; a drain hole is provided on the drain portion;

[0009] The flow plate is fixed inside the valve seat, and it and the valve core are located on opposite sides of the valve port; the flow plate is provided with flow holes.

[0010] In the improved version of the above-mentioned flow control check valve, the flow plate is fixed inside the valve seat and then attached to the valve port.

[0011] In the improved version of the flow control check valve, the flow orifice of the flow plate is smaller than the valve port.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: Since a flow plate with a flow orifice is provided in the valve seat, and the flow plate has a simple structure and is easy to manufacture, flow plates with different flow orifice sizes can be used to produce check valves with various flow specifications. This is simpler and easier than producing check valves with various flow specifications by processing valve seats with different valve orifice sizes. Therefore, the structure of this utility model is more reasonable and helps to reduce costs when producing check valves with various flow specifications.

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments: Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0015] Figure 2 This is a three-dimensional schematic diagram of an embodiment of the present utility model. Figure 1 ;

[0016] Figure 3 This is a three-dimensional schematic diagram of an embodiment of the present utility model. Figure 2 ;

[0017] Figure 4 This is an assembly diagram of an embodiment of the present utility model. Detailed Implementation

[0018] This utility model is a flow control check valve, such as Figures 1 to 4 As shown, it includes a valve seat 1, a valve body 2, a valve core 3, and a flow plate 4, wherein:

[0019] The valve seat 1 is provided with a valve port 11 and a conical shut-off port 12;

[0020] The valve body 1 is tubular and includes a sleeve portion 21 that can be fitted onto the valve seat 1, a sliding core portion 22 for the valve core 3 to slide within it, and a fluid pipe connection portion 23 for fitting with a fluid pipe; the sleeve portion 21 and the sliding core portion 22 have the same orifice diameter, but the sliding core portion 22 has a larger orifice diameter than the fluid pipe connection portion 23; the sliding core portion 22 and the fluid pipe connection portion 23 form a valve core stop 24 at the joint to limit the maximum stroke of the valve core when it is open;

[0021] The valve core 3 is disposed within the sliding core portion 22 of the valve body 2 and can slide axially along the hole wall of the sliding core portion 22; the valve core 3 is a hollow cavity, which includes a conical head 31 and a valve core body 32; the conical head 31 includes a flow-blocking portion 311 that can enter the flow-blocking port 12 and block the flow-blocking port 12, and a flow-draining portion 312 that is blocked outside the flow-blocking port 12; a flow-draining hole 3121 is provided on the flow-draining portion 312;

[0022] The flow plate 4 is fixed inside the valve seat 1, and it and the valve core 3 are located on opposite sides of the valve port 11; a flow hole 41 is provided on the flow plate 4.

[0023] As can be seen from the above, since a flow plate 4 with a flow orifice 41 is provided in the valve seat 1, and the flow plate has a simple structure and is easy to manufacture, flow plates with different flow orifice sizes can be used to produce check valves with various flow specifications. The valve seat, valve body and valve core can be shared. This is simpler and easier than producing check valves with various flow specifications by processing valve seats with different valve orifice sizes. Therefore, the structure of this utility model is more reasonable and helps to reduce costs when producing check valves with various flow specifications.

[0024] In this embodiment, as Figure 1 As shown, after the flow meter 4 is fixed inside the valve seat 1, it is attached to the valve port 11, which facilitates the fixation of the flow meter. Preferably, the flow hole 41 of the flow meter 4 is smaller than the valve port 11.

[0025] In the description of this utility model, it should be understood that terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that various changes or modifications can be made to the present invention without departing from the principles and spirit of the present invention as defined by the claims. Therefore, the detailed description of the embodiments in this disclosure is for explanation only and not for limiting the present invention, but rather the scope of protection is defined by the content of the claims.

Claims

1. A flow-controlled check valve, characterized in that, Includes valve seat, valve body, valve core, and flow meter, wherein: The valve seat is provided with a valve port and a conical shut-off port; The valve body is tubular and includes a sleeve portion that can be fitted onto the valve seat, a sliding core portion that allows the valve core to slide within it, and a fluid pipe connection portion for fitting with a fluid pipe; the sleeve portion and the sliding core portion have the same orifice diameter, but the sliding core portion has a larger orifice diameter than the fluid pipe connection portion; the sliding core portion and the fluid pipe connection portion form a valve core stop at the joint to limit the maximum stroke of the valve core when it is open. The valve core is disposed within the sliding core portion of the valve body and can slide axially along the hole wall of the sliding core portion; the valve core is a hollow cavity shape, which includes a conical head and a valve core body; the conical head includes a choking portion that can enter the choking port and block the choking port, and a drain portion that is blocked outside the choking port; a drain hole is provided on the drain portion; The flow plate is fixed inside the valve seat, and it and the valve core are located on opposite sides of the valve port; the flow plate is provided with flow holes.

2. The flow control check valve according to claim 1, characterized in that, The flow meter is fixed inside the valve seat and then attached to the valve port.

3. The flow control check valve according to claim 2, characterized in that, The flow meter's flow orifice is smaller than the valve port.

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