Precise multi-mode magnetic control anti-theft locking valve

Abstract

The utility model relates to the related field of valves, in particular to a precise multi-mode magnetic control anti-theft locking valve which comprises a valve body, a lock cap, a valve rod, a connecting sleeve, a polygonal positioning rod, a magnetic piece, a polygonal positioning groove and the like. By arranging the polygonal positioning rod, the spring, the magnetic piece and the polygonal positioning groove, the polygonal positioning rod is driven by the magnetic piece to move upwards to enter the polygonal positioning groove, the lock cap, the connecting sleeve and the valve rod can be driven to rotate when the hand wheel is rotated, and when the hand wheel is taken down, the polygonal positioning rod is contracted into the groove, so that the valve rod is locked. At the moment, the connecting sleeve is separated from the lock cap, the valve rod cannot be driven to rotate through the lock cap, locking of the valve rod is achieved, the number of used parts is small, the valve assembling difficulty is low, assembling is easy, external tools are not needed, and the valve assembling efficiency can be improved. The number of used parts is small, the situation that the valve cannot be smoothly popped out or retracted due to corrosion or clamping of foreign matter is reduced, and the stability of the valve in the using process is facilitated.

Description

Technical Field

[0001] The utility model relates to valve-related fields, and in particular to a precision multi-mode magnetically controlled anti-theft locking valve. Background Art

[0002] A valve is an important component in a fluid control system. It is used to control the flow of fluid (which can be liquid, gas or slurry). It adjusts the flow, pressure and direction of the fluid by changing the size of its internal channel or completely blocking the channel. Valves are widely used in many fields such as industry, housing, commerce, water conservancy, energy, etc., and play the role of switching, regulating, throttling, checking, diverting or diverting.

[0003] The existing publication number is: CN201547284U, which provides a valve with a magnetic lock, including a valve body, a valve bonnet and a handwheel. A valve core and a valve stem are arranged in the valve body, one end of the valve stem is connected to the valve core, and the other end passes through the valve bonnet and is fixedly connected to a lock cap, the bottom surface of the lock cap is against the top surface of the valve bonnet, a pin groove is arranged on the bottom surface of the lock cap and a magnetic body 1 is arranged in the pin groove; the top surface of the valve bonnet is provided with a pin and a locking mechanism that can allow the pin part to pass through the pin groove and fix the valve bonnet and the lock cap circumferentially; the handwheel is fixedly connected with a magnetic body 2, when the handwheel and the lock cap are circumferentially fixed and detachably connected, the magnetic body 1 and the magnetic body 2 repel each other and can cause the pin to leave the pin groove, which has the advantages of stable performance, high locking firmness, long service life and high anti-destruction performance.

[0004] The valve of the existing patent locks the valve stem by means of a pin cooperating with a slot. However, in order to improve the stability of the valve stem when locked, the existing patent sets a large number of pins, and the number of matching components such as magnetic body 1, magnetic body 2, and return spring also increases accordingly. This not only increases the difficulty of assembling the valve during production, but also easily increases the subsequent maintenance cost. It is also necessary to use external tools to install the positioning pins to connect the valve stem and the locking cap, which easily reduces the assembly efficiency of the valve. In addition, when a large number of pins are set, it is also easy for some pins to be unable to pop out or retract smoothly due to rust or foreign matter getting stuck, which easily adds uncertainty to the opening and closing of the valve. Summary of the invention

[0005] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a precision multi-mode magnetically controlled anti-theft locking valve to solve the above-mentioned technical problems.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a precision multi-mode magnetically controlled anti-theft locking valve, comprising a valve body, a valve cap fixedly mounted on the top of the valve body, a valve plate slidably mounted in the valve body, a locking cap rotatably mounted on the upper end of the valve cap, and a valve stem rotatably mounted in the valve cap, the valve stem is threadedly connected to the valve plate, the locking cap is made of stainless iron, a connecting sleeve located above the valve stem is movably inserted in the valve cap, and a square block is arranged on the top surface of the valve stem;

[0007] The bottom end face of the connecting sleeve is provided with a square groove adapted to the square block, and the top edge of the connecting sleeve is movably attached to the inner top end face of the lock cap;

[0008] A groove is provided in the middle of the top end face of the connecting sleeve, and a polygonal positioning rod is movably installed in the groove. The polygonal positioning rod is connected to the inner bottom of the groove by a spring, and a magnetic member is installed on the top end face of the polygonal positioning rod. When the spring is in a natural state, the magnetic member is completely retracted into the groove;

[0009] The inner top end face of the lock cap is provided with a polygonal positioning groove adapted to the polygonal positioning rod.

[0010] Preferably, the magnetic member is a magnet sheet, and the magnetic attraction force generated by the magnet sheet on the lock cap is less than the elastic force of the spring.

[0011] Preferably, the magnetic member is an electromagnet, and the magnetic attraction force generated by the electromagnet on the lock cap after being energized is greater than the sum of the elastic force of the spring and the gravity of the polygonal positioning rod.

[0012] Preferably, a rubber sheet is pasted on the inner top end face of the polygonal positioning groove.

[0013] Preferably, the upper end portion of the connecting sleeve protrudes from the top end face of the connecting sleeve, and a label is pasted on the side surface of the connecting sleeve above the connecting sleeve. A transparent plate is embedded in the side surface of the lock cap, and the transparent plate faces the label.

[0014] Preferably, the transparent plate is flush with the side surface of the lock cap, and the transparent plate is made of transparent polycarbonate material.

[0015] Preferably, the outer diameter of the spring is smaller than the inner diameter of the groove.

[0016] The beneficial effects of the present utility model:

[0017] The utility model realizes the locking of the valve stem by setting a polygonal positioning rod, a spring, a magnetic part and a polygonal positioning groove. When the handwheel is sleeved on the lock nut, the magnet pre-installed on the handwheel cooperates with the magnet sheet to drive the polygonal positioning rod to move upward in the groove, or the magnetic part made of an electromagnet can be controlled to drive the polygonal positioning rod to move upward. The polygonal positioning rod moves upward and is inserted into the polygonal positioning groove. At this time, when the handwheel is rotated, the lock nut, the connecting sleeve and the valve stem can be driven to rotate. When the handwheel is removed, the polygonal positioning rod contracts into the groove under the elastic force of the spring. At this time, the connecting sleeve is separated from the lock nut, and the valve stem cannot be driven to rotate by the lock nut, thus realizing the locking of the valve stem. Only one polygonal positioning rod cooperates with the polygonal positioning groove to realize the locking of the valve stem. The number of parts used is small, the assembly difficulty of the valve is low, and when assembling, the connecting sleeve is directly driven to sleeved on the square block with the square groove, and the assembly is simple without the aid of external tools, which is beneficial to improving the valve assembly efficiency. Using fewer polygonal positioning rods is also beneficial to reducing the situation of being unable to pop out or retract smoothly due to rust or foreign objects jamming, which is beneficial to the stability during the use of the valve. Brief Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of the utility model;

[0019] Figure 2 is a schematic front sectional structural diagram of the valve of the utility model;

[0020] Figure 3 is of the utility model Figure 2 enlarged schematic diagram of the structure at A in;

[0021] Figure 4 is a schematic top view structural diagram of the connecting sleeve of the utility model;

[0022] Figure 5 is a schematic structural diagram of the working state of the magnetic part of the utility model;

[0023] Figure 6 is a schematic structural diagram of the electromagnet connection of the utility model.

[0024] Wherein: valve body - 1, valve cap - 2, lock nut - 3, valve plate - 4, valve stem - 5, connecting sleeve - 6, square block - 7, square groove - 8, groove - 9, polygonal positioning rod - 10, spring - 11, magnetic part - 12, magnet sheet - 12a, electromagnet - 12b, polygonal positioning groove - 13, rubber sheet - 14, transparent plate - 15, label - 16. Detailed Embodiment

[0025] In order to further explain the technical solution of the utility model, the following is elaborated in detail through specific embodiments.

[0026] Such as Figure 1As shown in the figure, the utility model provides a precision multi-mode magnetically controlled anti-theft lock valve, which includes a valve body 1, a valve cap 2 locked and fixed on the top of the valve body 1, a valve plate 4 slidably installed in the valve body 1. The valve plate 4 can move up and down in the valve body 1 to realize the opening and closing of the valve, a lock cap 3 rotatably installed at the upper end of the valve cap 2, and a valve rod 5 rotatably installed in the valve cap 2. The valve rod 5 is threadedly connected to the valve plate 4. The valve rod 5 can horizontally rotate in the valve cap 2 to drive the valve plate 4 to vertically move on the valve body 1. The lock cap 3 is made of non-ferrous iron material;

[0027] As Figures 1 to 3 shown in the figure, in this embodiment, a connecting sleeve 6 is movably inserted into the valve cap 2 above the valve rod 5, and a square block 7 is integrally arranged in the middle of the top end surface of the valve rod 5;

[0028] A square groove 8 adapted to the square block 7 is opened in the middle of the bottom end surface of the connecting sleeve 6, and the top edge of the connecting sleeve 6 is movably attached to the inner top end surface of the lock cap 3;

[0029] A groove 9 is vertically opened in the middle of the top end surface of the connecting sleeve 6, and a polygonal positioning rod 10 is movably installed in the groove 9. The polygonal positioning rod 10 in this embodiment is a regular hexagon, and can also be adjusted according to actual needs, such as a regular quadrilateral or a regular octagon, and the polygonal positioning groove 13 in the lock cap 3 is adjusted accordingly;

[0030] The bottom end surface of the polygonal positioning rod 10 is connected to the inner bottom of the groove 9 through a spring 11, and a magnetic part 12 is locked and fixed on the top end surface of the polygonal positioning rod 10. When the spring 11 is in a natural state, the magnetic part 12 is completely retracted into the groove 9 to realize the separation of the lock cap 3 and the connecting sleeve 6, and further realize the separation of the lock cap 3 and the valve rod 5;

[0031] The outer diameter of the spring 11 is smaller than the inner diameter of the groove 9, which is convenient for the spring 11 to be elastically compressed in the groove 9;

[0032] A polygonal positioning groove 13 matching the polygonal positioning rod 10 is opened on the inner top end surface of the lock cap 3;

[0033] In this embodiment, a rubber sheet 14 is pasted on the inner top end surface of the polygonal positioning groove 13 to reduce the collision force between the magnetic part 12 and the inner top of the polygonal positioning groove 13;

[0034] In this embodiment, the upper end of the connecting sleeve 6 protrudes from the top end surface of the connecting sleeve 6, and a label 16 is pasted on the side surface of the connecting sleeve 6 above the connecting sleeve 6. A transparent plate 15 is embedded in the side surface of the lock cap 3, and the transparent plate 15 faces the label 16. It is convenient to observe the label 16 through the transparent plate 15 to obtain the position of the valve rod 5, and then determine the state of the valve plate 4. And when the lock cap 3 is rotated to drive the transparent plate 15 to face the label 16, it indicates that the polygonal positioning rod 10 is aligned with the polygonal positioning groove 13, which is beneficial to the subsequent operation of the handwheel;

[0035] Among them, the transparent plate 15 is flush with the side surface of the lock cap 3, and the transparent plate 15 is made of transparent polycarbonate material, which has good transparency, high strength, and long service life;

[0036] Specifically, when assembling the valve, the connecting sleeve 6 drives the square groove 8 to be sleeved on the square block 7 to realize the placement of the connecting sleeve 6 on the valve stem 5. Then, the valve stem 5 is installed on the valve cap 2, and the valve cap 2 drives the valve stem 5 to be installed on the valve body 1. The valve stem 5 is connected to the valve plate 4 in the valve body 1. Then, the lock cap 3 is sleeved on the valve cap 2, and the top end surface of the connecting sleeve 6 is abutted when the lock cap 3 is sleeved and installed to complete the assembly of the valve.

[0037] As Figure 4 shown, in this embodiment, the magnetic member 12 is a magnet sheet 12a, and the magnetic attraction force generated by the magnet sheet 12a on the lock cap 3 is less than the elastic force of the spring 11, which is convenient for the magnet sheet 12a to cooperate with the magnet pre-installed on the handwheel to drive the polygonal positioning rod 10 to move upward into the polygonal positioning groove 13. When the handwheel is not placed, the magnet sheet 12a enters the groove 9 under the elastic force of the spring 11 to separate the lock cap 3 from the valve stem 5;

[0038] When it is necessary to open or close the valve, the handwheel with a magnet can be sleeved on the lock cap 3. The magnet pre-installed on the handwheel and the magnet sheet 12a are set with opposite polarities. After the handwheel is placed, the magnet at the bottom of the handwheel generates a suction force on the magnet sheet 12a. The magnet sheet 12a receives the suction force and drives the polygonal positioning rod 10 to move upward. The upper end of the polygonal positioning rod 10 moves upward into the polygonal positioning groove 13. The spring 11 is elastically stretched under the pulling force of the polygonal positioning rod 10. Then, the handwheel can be rotated to drive the valve cap 3 to rotate. The valve cap 3 drives the connecting sleeve 6, the square block 7, and the valve stem 5 to rotate. The valve stem 5 drives the valve plate 4 to move up and down to open and close the valve. After the adjustment is completed, the handwheel is removed. The polygonal positioning rod 10 moves downward under the elastic force of the spring 11 and is placed in the pressing grass 9. The connecting sleeve 6 is separated from the lock cap 3, that is, the valve stem 5 is separated from the lock cap 3. At this time, when the lock cap 3 is rotated, it will not drive the valve stem 5 to rotate. At this time, the lock cap 3 rotates idly, realizing the locking of the valve stem 5 to prevent the medium controlled by the valve from being stolen at will. The removal of the handwheel on the valve can also effectively prevent theft.

[0039] As Figure 5 shown, in this embodiment, the magnetic member 12 is an electromagnet 12b. After the electromagnet 12b is energized, the magnetic attraction force generated on the lock cap 3 is greater than the sum of the elastic force of the spring 11 and the gravity of the polygonal positioning rod 10;

[0040] Specifically, during use, compared with the magnet sheet 12a provided, the electromagnet 12b can be connected to an external controller. The handwheel sleeved on the lock cap 3 does not need to be installed with a magnet, and the electromagnet 12b can also be remotely controlled to be energized to cooperate with the lock cap 3 made of austenitic iron material to drive the polygonal positioning rod 10 to move upward into the polygonal positioning groove 13, completing the connection between the lock cap 2 and the valve stem 5. When the electromagnet 12b is controlled to be powered off, the polygonal positioning rod 10 is separated from the polygonal positioning groove 13, completing the locking of the valve stem 5, so as to realize the anti-theft locking of the valve in multiple modes and improve the flexibility during the use of the valve.

[0041] The above are only the preferred examples of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A precision multi-mode magnetically controlled anti-theft locking valve, comprising a valve body, a valve cap fixed on the top of the valve body, a valve plate slidably mounted in the valve body, a lock cap rotatably mounted on the upper end of the valve cap, and a valve stem rotatably mounted in the valve cap, the valve stem is threadedly connected to the valve plate, and the lock cap is made of stainless iron; It is characterized in that A connecting sleeve located above the valve stem is movably inserted into the valve cap, and a square block is provided on the top surface of the valve stem; The bottom end surface of the connecting sleeve is provided with a square groove adapted to the square block, and the top edge of the connecting sleeve is movably fitted to the top end surface of the inner side of the locking cap; A groove is provided in the middle of the top surface of the connecting sleeve, a polygonal positioning rod is movably installed in the groove, the polygonal positioning rod is connected to the inner bottom of the groove through a spring, and a magnetic piece is installed on the top surface of the polygonal positioning rod, and the magnetic piece is completely retracted in the groove when the spring is in the natural state; The inner top end surface of the lock cap is provided with a polygonal positioning groove matched with the polygonal positioning rod.

2. According to claim 1, a precision multi-mode magnetically controlled anti-theft locking valve is characterized in that: The magnetic member is a magnet sheet, and the magnetic attraction force generated by the magnet sheet on the lock cap is smaller than the elastic force of the spring.

3. According to claim 1, a precision multi-mode magnetically controlled anti-theft locking valve is characterized in that: The magnetic part is an electromagnet. When the electromagnet is energized, the magnetic attraction force generated on the lock cap is greater than the sum of the elastic force of the spring and the gravity of the polygonal positioning rod.

4. According to claim 1, a precision multi-mode magnetically controlled anti-theft locking valve is characterized in that: A rubber sheet is pasted on the inner top end surface of the polygonal positioning groove.

5. According to claim 1, a precision multi-mode magnetically controlled anti-theft locking valve is characterized in that: The upper end of the connecting sleeve protrudes from the top end surface of the connecting sleeve, and a label located above the connecting sleeve is pasted on the side surface of the connecting sleeve. A transparent plate is embedded in the side surface of the locking cap, and the transparent plate faces the label.

6. According to claim 5, a precision multi-mode magnetically controlled anti-theft locking valve is characterized in that: The transparent plate is flush with the side surface of the lock cap, and the transparent plate is made of transparent polycarbonate material.

7. According to claim 1, a precision multi-mode magnetically controlled anti-theft locking valve is characterized in that: The outer diameter of the spring is smaller than the inner diameter of the groove.

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