Magnetic opening and closing structure for valve

Abstract

The utility model relates to the technical field of valve parts, in particular to a magnetic opening and closing structure for a valve, which comprises a valve shaft and a gland sleeved outside the valve shaft, and is characterized in that a magnetic protective cover component is detachably arranged at the top end of the gland; the magnetic protection cover assembly comprises an inner cover arranged at the top end of the gland in a sleeving mode and an outer cover arranged outside the inner cover in a matched sleeving mode, magnetic blocks are arranged on the top face of the inner cover and the top face of the outer cover, the magnetic blocks on the top face of the inner cover and the magnetic blocks on the top face of the outer cover attract each other, and a locking assembly matched with the gland is arranged on the inner cover. The outer cover is matched with the locking assembly to drive locking switching of the magnetic protection cover assembly. Through the design of the locking assembly, the magnetic protective cover assembly can be firmly locked at the upper end of the gland, the valve shaft is effectively prevented from being accidentally operated or polluted, and therefore the safety of the whole system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valve parts, in particular to a magnetic opening and closing structure for a valve. Background Art

[0002] The valve shaft, as an important component connecting the inside and outside of the pipeline, plays a key role in driving the valve disc or ball valve to rotate. Through its operation, we can easily control the connection and closure of the pipeline. It is usually made of solid metal and tightly integrated with the fixed components inside the pipeline to ensure the integrity of the structure and the stability of operation. The part of the valve shaft exposed outside the pipeline, especially its regular square or hexagonal bolt head, is convenient for workers to use tools such as handwheels for rotation operations. However, the valve shaft is exposed to the external environment for a long time and is easily eroded by natural factors such as wind, rain, dust, and corrosion, which causes its surface to wear, rust or damage, thereby affecting the normal operation of the valve. In addition, it may cause the pipeline system to be opened or closed accidentally, causing safety accidents or causing economic losses. Utility Model Content

[0003] The utility model provides a magnetic opening and closing structure for a valve, so as to solve the technical problems in the prior art that the valve shaft has low safety and shortens its service life when in use.

[0004] In order to solve the above problems, the magnetic opening and closing structure for valves provided by the utility model adopts the following technical solutions:

[0005] It includes a valve shaft and a pressure cover placed outside the valve shaft, the top of the pressure cover is detachably provided with a magnetic protection cover assembly, the magnetic protection cover assembly includes an inner cover placed on the top of the pressure cover and an outer cover matched with the inner cover, the top surfaces of the inner cover and the outer cover are both provided with magnetic blocks, and the magnetic blocks on the top surface of the inner cover and the top surface of the outer cover attract each other, the inner cover is provided with a locking assembly that cooperates with the pressure cover, and the locking switch of the magnetic protection cover assembly is driven by the outer cover cooperating with the locking assembly.

[0006] Furthermore, the locking assembly includes a pin shaft that slides through the side wall of the inner cover, a limit plate is provided at the end of the pin shaft opposite to the outer cover, a lock plate is provided at the other end of the pin shaft, and a slot that cooperates with the lock plate is circumferentially provided on the outer wall of the upper end portion of the pressure cover, and the pin shaft drives the lock plate to move by axial movement.

[0007] Furthermore, a universal ball bearing is provided on the side surface of the limit plate opposite to the outer cover, the inner side surface of the bottom of the outer cover is a guide slope, and a spring is sleeved on the pin shaft and is located between the limit plate and the side wall of the inner cover.

[0008] Furthermore, a boss is formed on the outer side surface of the bottom of the inner cover, and the outer side surface of the boss is a slope surface that fits with the guide slope surface.

[0009] Furthermore, the side surface of the locking plate is a convex arc surface.

[0010] Furthermore, the outer surface of the outer cover is provided with anti-slip grooves.

[0011] Furthermore, the cross-section of the upper end portion of the valve shaft is pentagonal.

[0012] The beneficial effects of the magnetic opening and closing structure for valves provided by the utility model are as follows: the utility model is easy to use. Firstly, the magnetic protection cover assemblies attract each other through the magnetic blocks, so that the inner cover and the outer cover can be quickly and conveniently combined or separated without the use of additional tools or complicated operations, which greatly improves the convenience of use. Furthermore, through the design of the locking assembly, the magnetic protection cover assembly can be firmly locked on the upper end of the pressure cover, effectively preventing the valve shaft from being accidentally operated or contaminated, thereby improving the safety of the entire system. Among them, the pin shaft, limit plate, lock plate and other components in the locking assembly are tightly matched, the operation is stable, and it is not easy to fail. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present invention will become easy to understand. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0014] Figure 1 It is a schematic diagram of the magnetic opening and closing structure of the valve of the utility model;

[0015] Figure 2 It is a cross-sectional view of the magnetic opening and closing structure for a valve of the utility model;

[0016] Figure 3 for Figure 2 A partial enlarged view of the middle area A;

[0017] Figure 4 It is a structural schematic diagram of the cooperation between the valve shaft and the pressure cover in the utility model.

[0018] Description of reference numerals:

[0019] 1. Valve shaft; 2. Pressure cover; 21. Slot; 3. Magnetic protective cover assembly; 31. Inner cover; 311. Boss; 32. Outer cover; 321. Guide slope; 4. Locking structure; 41. Pin shaft; 42. Limit plate; 43. Lock plate; 44. Universal ball; 45. Spring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0021] Any number of elements in the drawings is for illustration and not limitation, and any naming is for distinction only and does not have any limiting meaning.

[0022] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0023] Embodiment 1 of the magnetic opening and closing structure for a valve provided by the utility model:

[0024] like Figures 1 to 4 As shown,

[0025] It includes a valve shaft 1 and a pressure cover 2 which is placed outside the valve shaft 1. The top of the pressure cover 2 is detachably provided with a magnetic protection cover assembly 3. The magnetic protection cover assembly 3 includes an inner cover 31 which is placed on the top of the pressure cover 2 and an outer cover 32 which is matched and placed outside the inner cover 31. The top surfaces of the inner cover 31 and the outer cover 32 are both provided with magnetic blocks, and the magnetic blocks on the top surface of the inner cover 31 and the magnetic blocks on the top surface of the outer cover 32 attract each other. The inner cover 31 is provided with a locking assembly 4 which cooperates with the pressure cover 2, and the locking switch of the magnetic protection cover assembly 3 is driven by the outer cover 32 cooperating with the locking assembly 4.

[0026] The cross section of the upper end of the valve shaft 1 is pentagonal.

[0027] In order to improve the convenience of operation, the outer surface of the outer cover 32 is provided with anti-slip grooves.

[0028] Specifically, the magnetic protective cover assembly 3 is composed of an inner cover 31 and an outer cover 32, providing double protection for the valve shaft 1. The inner cover 31 and the outer cover 32 attract each other through the magnetic block, ensuring a close fit between the two, effectively preventing foreign matter from entering the valve shaft 1, thereby extending the service life of the valve.

[0029] The magnetic protection cover assembly 3 is closely matched with the pressure cover 2 through the locking assembly 4, thereby realizing closed protection of the valve shaft 1. When the magnetic protection cover assembly 3 is locked, the valve shaft 1 is completely closed to prevent accidental touch and other operations, thereby improving the safety of the system.

[0030] In this embodiment, the locking assembly 4 includes a pin shaft 41 that slides through the side wall of the inner cover 31, and a limit plate 42 is provided at the end of the pin shaft 41 opposite to the outer cover 32, and a lock plate 43 is provided at the other end of the pin shaft 41. The outer wall of the upper end portion of the pressure cover 2 is circumferentially provided with a slot 21 that cooperates with the lock plate 43, and the pin shaft 41 drives the lock plate 43 to move by axial movement.

[0031] A universal ball 44 is provided on the side of the limit plate 42 opposite to the outer cover 32 , the inner side surface of the bottom of the outer cover 32 is a guide slope 321 , and a spring 45 is sleeved on the pin 41 and is located between the limit plate 42 and the side wall of the inner cover 31 .

[0032] A boss 311 is formed on the outer side surface of the bottom of the inner cover 31 , and the outer side surface of the boss 311 is a slope surface that fits with the guide slope 321 .

[0033] The side surface of the locking plate 43 is a convex arc surface.

[0034] Specifically, the unlocking and locking processes of the locking assembly are very simple and convenient. By moving the outer cover 32 upward, the pin 41 can be easily pushed outward under the action of the restoring force of the spring 45, so that the lock plate 43 is disengaged from the slot 21 to achieve unlocking. Conversely, when the outer cover 32 is placed on the inner cover 31, the interaction between the guide bevel 321 and the universal ball 44 can easily push the pin 41 inward, so that the lock plate 43 is inserted into the slot 21 to achieve locking. This design does not require the use of additional tools or complicated operations, which improves the convenience of use.

[0035] During specific use, when it is necessary to remove the magnetic protection cover assembly 3 to operate the valve shaft 1 to control the valve, first act on the outer cover 32 to lift the outer cover 32 upwards. At this time, the pin shaft 41 moves to the side away from the pressure cover 2 under the action of the restoring force of the spring 45, and at the same time drives the lock plate 43 to disengage from the slot 21. At this time, the magnetic protection cover assembly 3 is unlocked as a whole, and the inner cover 31 can be removed.

[0036] On the contrary, when the magnetic protection cover assembly 3 needs to be locked to the upper end of the pressure cover 2, the inner cover 31 is first put on the upper end of the pressure cover 2, and then the outer cover 32 is put on the inner cover 31. During the process of putting the outer cover 32 down, the guide inclined surface 321 and the universal ball 44 are used to push the pin 41 gradually to the side close to the pressure cover 2, and at the same time compress the spring 45, and finally the locking plate 43 is inserted into the slot 21, so that the magnetic protection cover assembly 3 is locked to the upper end of the pressure cover 2 as a whole, and the valve shaft 1 can be closed and protected without human supervision.

[0037] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "width", "horizontal", "top", "bottom", "inside", "outside" and other terms indicating orientation or position relationship are based on the orientation or position relationship shown in the drawings of this specification, which are only for the purpose of facilitating the explanation of the scheme of the utility model and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or position relationship terms cannot be understood or interpreted as limitations on the scheme of the utility model.

[0038] In addition, in the description of this specification, “plurality” means at least two, for example, two, three or more, etc., unless otherwise clearly and specifically defined.

Claims

1. A magnetic opening and closing structure for a valve, comprising a valve shaft (1) and a gland (2) sleeved outside the valve shaft (1), characterized in that: The top of the pressure cover (2) is detachably provided with a magnetic protective cover assembly (3), and the magnetic protective cover assembly (3) comprises an inner cover (31) which is placed on the top of the pressure cover (2) and an outer cover (32) which is placed on the outside of the inner cover (31). The top surfaces of the inner cover (31) and the outer cover (32) are both provided with magnetic blocks, and the magnetic blocks on the top surfaces of the inner cover (31) and the outer cover (32) attract each other. The inner cover (31) is provided with a locking assembly (4) which cooperates with the pressure cover (2), and the locking switch of the magnetic protective cover assembly (3) is driven by the outer cover (32) cooperating with the locking assembly (4).

2. The magnetic opening and closing structure for a valve according to claim 1, characterized in that: The locking assembly (4) includes a pin shaft (41) which slides through the side wall of the inner cover (31); a limit plate (42) is provided at one end of the pin shaft (41) opposite to the outer cover (32); a locking plate (43) is provided at the other end of the pin shaft (41); a slot (21) which cooperates with the locking plate (43) is circumferentially provided on the outer wall of the upper end portion of the pressure cover (2); and the pin shaft (41) drives the locking plate (43) to move by axial movement.

3. The magnetic opening and closing structure for a valve according to claim 2, characterized in that: A universal ball (44) is provided on the side of the limit plate (42) opposite to the outer cover (32); the inner side surface of the bottom of the outer cover (32) is a guide slope (321); and a spring (45) is sleeved on the pin shaft (41) and is located between the side wall of the limit plate (42) and the inner cover (31).

4. The magnetic opening and closing structure for a valve according to claim 3, characterized in that: A boss (311) is formed on the outer side surface of the bottom of the inner cover (31), and the outer side surface of the boss (311) is a slope surface that fits the guide slope surface (321).

5. The magnetic opening and closing structure for a valve according to claim 2, characterized in that: The side surface of the locking plate (43) is a convex arc surface.

6. The magnetic opening and closing structure for a valve according to claim 1, characterized in that: The outer surface of the outer cover (32) is provided with anti-slip grooves.

7. The magnetic opening and closing structure for a valve according to claim 1, characterized in that: The cross section of the upper end portion of the valve shaft (1) is pentagonal.

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