Magnetic locking valve with dynamic balance adjustment function

Abstract

The utility model relates to a magnetic lock -closed valve with dynamic balance adjusting function, this magnetic lock -closed valve is ball valve, installs magnetic lock head at the valve rod place of setting valve body, and magnetic lock head includes inner and outer sleeve, is equipped with lock spring between inner and outer sleeve, the through -hole is opened on the inner sleeve lateral wall, is equipped with lock pearl between the outer sleeve lateral wall and inner sleeve, and lock pearl can retractable move along the through -hole, the outer wall of valve body where the valve rod is at is provided with annular groove, and lock pearl is embedded in annular groove, the water inlet one end of valve body is connected with the valve cap subassembly, and the inside of valve cap subassembly is equipped with adjusting spring and movable sleeve, and adjusting spring can push movable sleeve and move along the water flow direction, and the circumferential lateral wall of movable sleeve is provided with a plurality of water -passing holes, the utility model has magnetic lock -closed function and flow dynamic adjusting function, can prevent the unauthorized operation of valve, still can realize to the dynamic balance adjustment of water flow.

Description

Technical Field

[0001] This utility model relates to a pipeline valve, specifically a magnetic locking valve with dynamic balance adjustment function. Background Technology

[0002] In northern my country, most homes have heating pipes, which are typically equipped with ball valves to control the flow of hot water. During winter heating, the ball valve is opened to allow hot water to flow through the pipes; when the weather warms up and heating is stopped, the ball valve is closed to stop the flow of hot water. Normally, the ball valve is operated by staff. To prevent unauthorized operation, existing technology usually incorporates a locking mechanism on the ball valve, requiring a special key to operate it.

[0003] In heating pipelines, water circulation exhibits a bias, with higher circulation volume where pipeline resistance is low and lower volume where resistance is high. This results in hydraulic imbalance within the heating system. This imbalance leads to higher indoor temperatures for users near the network's edge and lower indoor temperatures for users at the network's edge. Current technologies typically require the installation of additional flow regulation devices on the pipeline to address this issue. Utility Model Content

[0004] This utility model discloses a magnetic locking valve with dynamic balance adjustment function, which can not only prevent the valve from being operated without authorization, but also ensure that each pipeline outlet can maintain its required design flow rate.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A magnetic locking valve with dynamic balance adjustment function includes a valve body, a valve seat, a valve stem, a valve ball, and a magnetic locking head. The valve body has open ends at both opposite ends and the top. The valve seat is located inside the valve body in a cavity below the top open end. The valve ball is located at the valve seat, and the valve stem is located at the top open end of the valve body. The bottom end of the valve stem is fixedly connected to the valve ball, and the top end of the valve stem extends out of the valve body. A sealing ring is provided between the valve stem and the valve body. An annular groove is provided on the outer wall of the top open end of the valve body. The magnetic locking head includes an inner sleeve and an outer sleeve. A locking spring is provided between the top of the inner sleeve and the outer sleeve. Through holes are spaced apart on the circumferential side wall of the inner sleeve, and locking beads are provided on the circumferential inner wall of the outer sleeve corresponding to the through holes of the inner sleeve. The lock head is fitted onto the open end of the valve body. The locking ball is embedded in the annular groove, allowing the magnetic lock head to rotate only relative to the valve body. One open end of the valve body is fixedly connected to the valve cap assembly. The valve cap assembly includes a hollow outer shell with open ends on both sides. One end of the outer shell is the water inlet, and the other end of the outer shell communicates with the inner cavity of the valve body. An adjusting spring and a movable sleeve are provided in the inner cavity of the outer shell. The adjusting spring is located near the valve ball, and the movable sleeve is located near the water inlet. The movable sleeve is open at the end near the adjusting spring and has a flange on its edge. The adjusting spring abuts against the flange of the movable sleeve. The movable sleeve forms a closed end near the water inlet. Multiple water passage holes are provided on the circumferential sidewall of the movable sleeve, and the movable sleeve can move axially.

[0006] Furthermore, the closed end of the movable sleeve is provided with a through circular hole.

[0007] Furthermore, the water passage includes a circular hole and a curved hole, with the circular hole located on the side closer to the water inlet and the curved hole located on the side farther from the water inlet.

[0008] Furthermore, the water passage area of ​​the curved hole gradually increases from the water inlet direction to the water outlet direction.

[0009] Furthermore, the inner cavity of the outer shell near the water inlet is formed into a flared opening that is wider on the outside and narrower on the inside.

[0010] The ball valve designed in this invention has a magnetic locking function and a dynamic flow regulation function. The magnetic lock head is installed on the valve body at the valve stem, so the valve ball cannot be rotated by operating the valve stem without the use of a special key, thereby preventing unauthorized operation of the valve. This invention also has a valve cap assembly with flow regulation function installed at the water inlet end of the ball valve. The extension and retraction length of the movable sleeve can be controlled according to the pressure difference, thereby adjusting the water flow area and keeping the flow rate constant, thus achieving dynamic balance regulation of the water flow. Attached Figure Description

[0011] Figure 1 This is a front view of the magnetic locking valve in the embodiment; Figure 2 for Figure 1A longitudinal sectional view.

[0012] Figure label: 1. Valve body; 2. Magnetic lock head; 3. Inlet; 4. Outlet; 5. Valve stem; 6. Sealing ring; 7. Valve ball; 8. Valve seat; 9. Valve cap assembly; 10. Locking ball; 11. Locking spring; 12. Movable sleeve; 13. Water passage hole; 14. Adjusting spring. Detailed Implementation

[0013] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0014] This embodiment discloses a magnetic locking valve with dynamic balance adjustment function, such as... Figure 1 and Figure 2 As shown, this embodiment takes a ball valve as an example. Its structure mainly includes a valve body 1, a valve seat 8, a valve stem 5, a valve ball 7, and a magnetic lock head 2. Figure 2 As shown, the left end of the valve body 1 is the outlet 4, and the right end is the inlet 3. A valve stem 5 is installed at the open top end of the valve body 1. The interior of the valve body 1 forms a cavity that communicates with both the inlet 3 and the outlet 4. A valve seat 8 is installed in this cavity, and a valve ball 7 is placed on the valve seat 8. Symmetrical water-permeable holes are provided on the valve ball 7. The bottom end of the valve stem 5 is fixedly connected to the valve ball 7, and the top end of the valve stem 5 extends out of the valve body 1. A sealing ring 6 is provided between the valve stem 5 and the valve body 1. This structure is the general structure of a ball valve. When the valve stem 5 is rotated and the water-permeable holes on the valve ball 7 are connected to the inlet 3, water can flow from the inlet 3 into the inner cavity of the valve body 1 and out from the outlet 4. When the valve stem 5 is rotated and the water-permeable holes on the valve ball 7 are not connected to the inlet 3, water flow into the inner cavity of the valve body 1 is prevented.

[0015] In this embodiment, to prevent unauthorized operation of the valve, a magnetic lock head 2 is installed at the open end of the valve body to achieve a magnetic locking function. Magnetic locking technology is a mature existing technology, typically involving a magnetic lock head 2 and a special key. The special key has magnetic tumblers that match the lock beads on the magnetic lock head 2. This embodiment only provides a brief description. Figure 2The structure of the magnetic lock head 2 shown is illustrated. In this embodiment, the magnetic lock head 2 includes an inner sleeve and an outer sleeve nested together. A lock spring 11 is provided between the top of the inner sleeve and the outer sleeve; pressing the outer sleeve allows it to move axially relative to the inner sleeve. Four through holes are spaced apart on the circumferential sidewall of the inner sleeve, and a locking bead 10 is provided on the circumferential inner wall of the outer sleeve corresponding to the through holes of the inner sleeve. To facilitate the installation of the magnetic lock head 2, an annular groove is provided on the outer wall of the open end of the valve body 1 in this embodiment. After the magnetic lock head 2 is installed at the open end of the valve body 1, the locking bead 10 extends from the through hole of the inner sleeve and embeds into the annular groove, preventing the magnetic lock head 2 from being removed from the valve body 1. At this time, the magnetic lock head 2 can only rotate, covering the valve stem 5. Without authorization, the rotation of the valve ball 7 cannot be controlled by rotating the valve stem 5. When the special key is placed on the magnetic lock head 2 and the outer sleeve is pressed firmly, the lock ball 10 will retract and disengage from the annular groove. At this point, the magnetic lock head 2 can be removed, and the valve stem 5 can be rotated. The magnetic locking structure is existing technology and is not a technical improvement of this utility model. The specific structural principle will not be described in detail in this embodiment (refer to CN220102259U for a description of the structural principle).

[0016] In this embodiment, a valve cap assembly 9 with flow regulation function is installed at the water inlet end of the valve body 1. Figure 2 The valve cap assembly 9 is screwed and fixed to the inlet end of the valve body 1. The valve cap assembly 9 includes an outer shell, an adjusting spring 14, a track ring (not shown in the figure), a fixed sleeve (not shown in the figure), and a movable sleeve 12. The outer shell is hollow inside and open at both ends. The inner cavity of the outer shell is divided into two parts: the cavity near the valve ball 7 is cylindrical, and the cavity near the inlet 3 is shaped like a flared mouth, wider on the outside and narrower on the inside. These two cavities are interconnected. The fixed sleeve is installed in the cylindrical cavity. The diameter of the movable sleeve 12 is smaller than the inner diameter of the fixed sleeve. The movable sleeve 12 is located near the inlet 3. One end of the movable sleeve 12 is closed, and the other end is open. The edge of the open end of the movable sleeve 12 is flanged. The track ring is set between the fixed sleeve and the movable sleeve 12. The open end of the movable sleeve 12 faces the fixed sleeve, and the track ring limits the flange of the movable sleeve 12. An adjusting spring 14 is installed inside the fixed sleeve. One end of the adjusting spring 14 abuts against the limiting ring of the fixed sleeve, and the other end abuts against the flange of the movable sleeve 12. Compressing the adjusting spring 14 can push the movable sleeve 12 to move axially. A through circular hole is opened at the center of the closed end of the movable sleeve 12, and multiple water passage holes 13 are opened on the circumferential sidewall of the movable sleeve 12. In this embodiment, the water passage holes 13 include circular holes and curved holes. The circular holes are located on the side closer to the water inlet 3, and the curved holes are located on the side farther away from the water inlet 3. The water passage area of ​​the curved holes gradually increases from the water inlet direction to the water outlet direction.

[0017] The flow regulation process of the valve cap assembly 9 in this embodiment is described as follows: When water enters from the inlet 3, the pressure difference between the inlet end of the movable sleeve 12 and the outlet end of the fixed sleeve increases. The water flow pushes the movable sleeve 12 towards the fixed sleeve, and the adjusting spring 14 is continuously compressed. During the movement, the area of ​​the exposed water passage hole 13 on the movable sleeve 12 continuously decreases. According to the formula... (G-flow, - Flow coefficient, A - Water flow area As can be seen from the pressure difference, the flow rate G remains constant. When the pressure difference between the inlet end of the movable sleeve 12 and the outlet end of the fixed sleeve decreases, the elastic force of the adjusting spring 14 is continuously released and pushes the movable sleeve 12 to move closer to the inlet 3. The area of ​​the water passage hole 13 exposed on the movable sleeve 12 continuously increases, but according to the above flow rate formula, its flow rate G remains constant, thereby achieving dynamic balance regulation of the water flow.

[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A magnetic locking valve with dynamic balance adjustment function, comprising a valve body, a valve seat, a valve stem, a valve ball, and a magnetic locking head, wherein the valve body has open ends at both opposite ends and the top; the valve seat is disposed inside the valve body in a cavity below the top open end; the valve ball is disposed at the valve seat; the valve stem is disposed at the top open end of the valve body; the bottom end of the valve stem is fixedly connected to the valve ball; the top end of the valve stem extends out of the valve body; and a sealing ring is disposed between the valve stem and the valve body, characterized in that: An annular groove is provided on the outer wall of the open end of the valve body. The magnetic lock head includes an inner sleeve and an outer sleeve. A lock spring is provided between the top of the inner sleeve and the outer sleeve. Through holes are opened at intervals on the circumferential side wall of the inner sleeve. A locking ball is provided on the circumferential inner wall of the outer sleeve corresponding to the through holes of the inner sleeve. The magnetic lock head is sleeved on the open end of the valve body. The locking ball is embedded in the annular groove, allowing the magnetic lock head to rotate only relative to the valve body. One open end of the valve body is fixedly connected to a valve cap assembly. The valve cap assembly includes a hollow structure with two opposite ends. The outer shell is open, with one end serving as the water inlet and the other end connecting to the inner cavity of the valve body. The inner cavity of the outer shell contains an adjusting spring and a movable sleeve. The adjusting spring is located near the valve ball, and the movable sleeve is located near the water inlet. The movable sleeve is open at the end near the adjusting spring and has a flange on its edge. The adjusting spring rests against the flange of the movable sleeve, and the side of the movable sleeve near the water inlet forms a closed end. The circumferential sidewall of the movable sleeve has multiple water passage holes, and the movable sleeve can move axially.

2. A magnetic locking valve with dynamic balance adjustment function according to claim 1, characterized in that: The closed end of the movable sleeve has a through hole.

3. A magnetic locking valve with dynamic balance adjustment function according to claim 1, characterized in that: The water passage includes a circular hole and a curved hole, with the circular hole located on the side closer to the water inlet and the curved hole located on the side farther from the water inlet.

4. A magnetic locking valve with dynamic balance adjustment function according to claim 3, characterized in that: The water passage area of ​​the curved hole gradually increases from the water inlet direction to the water outlet direction.

5. A magnetic locking valve with dynamic balance adjustment function according to claim 1, characterized in that: The inner cavity of the outer shell forms a flared opening that is wider on the outside and narrower on the inside near the water inlet.

Images