Valve cover and anti-theft valve

Abstract

The utility model discloses a valve cover and an anti-theft valve with the valve cover, which can ensure that the valve can only be opened by a key under the condition that the normal disassembly and assembly of the valve cover are ensured, and water cannot be stolen by other conventional disassembly and assembly means under the condition that valve parts are not damaged, so that an anti-theft water effect is achieved. The valve cover comprises an anti-theft unit, and the anti-theft unit is in a concave / convex shape, is formed on the outer surface of the valve cover and is used for being matched with a special tool to disassemble and assemble the valve cover.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical connection technical field, especially a valve cover and the theftproof valve door with the valve cover can prevent theft. BACKGROUND

[0002] Because of various reasons (such as: water fee is owed, etc.), water company needs to carry out unilateral water supply control to end user, if using traditional valve, user can open valve at will and carry out water use.

[0003] In order to prevent this problem, the prior art designs the opening and closing handle random opening and closing structure into the existing theftproof structure on the basis of conventional manual valve, designs the traditional opening and closing handle of valve into special key, must use special key to promote or press down the function of valve core, makes valve unable to open normally under the condition of not having special key, and user also cannot privately connect water source.

[0004] The above structure is relatively convenient, but it has the following technical problems:

[0005] I. the valve cover has the condition that the user can rotate the valve cover from the valve body with a wrench under the condition that the gate is closed, removes the valve core, and then twists and rotates the valve cover and the valve body, by this method, the user can privately use water without damaging the valve and leaving no trace, causing the management difficulty of water company.

[0006] II. the outer surface of the wrench opening area forms a hexagonal plane matched with the wrench, and the inside needs to be matched with the valve body to form a cylindrical cavity channel, so that the wall thickness of the wrench opening area is uneven, and the wall thickness of the weak point needs to be increased to increase the overall thickness and size of the wrench opening area, so that the overall weight and volume of the valve cover are large, and more materials are consumed. INVENTION CONTENTS

[0007] The utility model provides a valve connecting structure, which aims to overcome at least one problem of the prior art.

[0008] To achieve this purpose, the utility model adopts the following technical solutions:

[0009] The utility model discloses a valve cover in the first aspect, including theftproof unit, theftproof unit has concave / convex shape and forms in the outer surface of valve cover, is used for with special tool cooperation dismouting valve cover, the outer surface of valve cover forms a plurality of theftproof units, a plurality of theftproof units are arranged along the circumference of valve cover, and the theftproof unit is convex rib and / or recess.

[0010] As an optional technical solution, the outer surface of the valve cover is circular. On the one hand, compared with the wrench plane, the circular surface can make the wall thickness of the valve cover uniform, thereby reducing the volume and weight of the valve cover and saving costs. On the other hand, the circular outer surface also makes it more difficult to use traditional wrenches and other tools to tighten the valve cover, and the special tool can be clamped and fixed with the anti-theft unit on the outer surface of the valve cover to tighten the valve cover, and the anti-theft effect is better.

[0011] As an optional technical solution, the anti-theft unit is arranged in the axial direction of the valve cover. Arranging the ribs or grooves in the axial direction of the valve cover can increase the area that can be matched and tightened in the axial direction, prevent the special tool from being removed due to axial movement during tightening, and increase the stability of the special tool during the matching and tightening process with the anti-theft unit.

[0012] As an optional technical solution, the anti-theft unit is a rib, and the rib is arranged in the axial direction of the valve cover and inclined away from / near the outer surface of the valve cover. The rib arranged in the axial direction can increase the stability of the special tool during the matching and tightening process with the anti-theft unit, and the anti-theft unit is inclined in the axial direction away from / near the outer surface of the valve cover, so that the wrench clamped on the rib will slide out along the inclined direction of the rib, further reducing the possibility of users disassembling the valve cover with a wrench, and improving the anti-theft performance of the valve cover.

[0013] As an optional technical solution, the valve cover includes a valve cover body, a cover body, and a valve body connecting end, wherein the cover body is arranged on one side of the valve cover body, the outer diameter of the cover body is larger than the outer diameter of the valve cover body, and the valve body connecting end is arranged at the end of the cover body away from the valve cover body. The valve body connecting end is used to connect with the valve body. The valve cover is tightly fixed with the valve body through the valve body connecting end. In order to reduce costs, the valve cover will not be set to the same size as the valve body interface, but will expand the outer diameter at the position close to the valve body connecting end to form a cover body.

[0014] As an optional technical solution, the anti-theft unit is a rib, and the rib extends from the outer surface of the valve cover body to the outer surface of the cover body. One end of the rib is arranged on the cover body. On the one hand, the cover body is closer to the valve body connecting end, which can reduce the torque when disassembling the valve cover. On the other hand, the connection position of the cover body and the valve cover body may have a weak point due to stress concentration, and the rib can improve the strength of the connection position.

[0015] As an optional technical solution, the valve cover body further comprises a connecting portion formed at one end of the valve cover body close to the cover body, the connecting portion has a step and / or a curved surface with gradually increasing outer diameter, and the protruding ribs extend from the outer surface of the connecting portion to the outer surface of the cover body. Due to the difference in outer diameter between the cover body and the valve cover body, it may be difficult to ensure the strength of the connection position in direct connection, and therefore the variable-diameter connection can be performed through the connecting portion. The connecting portion can be a step portion with increasing outer diameter or an excessively curved surface with gradually increasing outer diameter, and the protruding ribs are arranged on the connecting portion and the surface of the cover body, so that the strengthening effect on the connection position is good, the anti-theft effect is good, and the structure of the valve cover as a whole is compact, the material consumption of the protruding ribs is small, the space occupancy is also small, which is beneficial to reducing the volume and weight of the valve body and reducing the cost.

[0016] The utility model provides a kind of anti-theft valve according to the second aspect of the utility model, with the valve cover in any of the above technical solutions.

[0017] The utility model has the beneficial effects that:

[0018] According to the valve cover and the anti-theft valve provided by the utility model, the anti-theft unit with concave / convex shape will damage the continuity of the outer surface of the valve cover. The inner surface of conventional tools (such as wrenches, pliers, etc.) is generally a continuous surface such as a curved surface or a plane, which cannot be completely matched with the outer surface of the valve cover with the anti-theft unit, and cannot be clamped with the anti-theft unit with concave / convex shape. The special tool has a notch or protrusion corresponding to the anti-theft unit with concave / convex shape, which can be clamped with the anti-theft unit on the outer surface of the valve cover to rotate the valve cover. Therefore, under the condition of ensuring the normal disassembly of the valve cover, the valve can only be opened by a key, and cannot be stolen by other conventional disassembly methods without damaging the valve components, which plays a role in preventing water theft.

[0019] In order to rotate the valve cover more efficiently, the special tool will be clamped with the anti-theft unit on the valve cover along the circumference of the valve cover. Therefore, arranging multiple anti-theft units along the circumference of the valve cover can make the stress of multiple anti-theft units uniform during rotation, reducing the risk of deformation and damage of a single anti-theft unit due to excessive stress.

[0020] The protruding rib and the groove structure are simple, and the special tool corresponding to the protruding rib or the groove only needs to have a notch or protrusion structure corresponding to the protruding rib and the groove along the circumference, which can be clamped with the protruding rib and the groove to rotate the valve cover, and is more convenient for processing and manufacturing. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a cross-sectional view of a valve cover provided by the first embodiment of the utility model.

[0022] Figure 2 is another cross-sectional view of a valve cover provided by the first embodiment of the utility model.

[0023] Figure 3 is a structure schematic view of a valve cover provided in the second embodiment of the utility model.

[0024] Figure 4 is a structure schematic view of a special tool corresponding to the valve cover provided in the second embodiment of the utility model.

[0025] Figure 5 is an axial sectional view of a valve cover provided in the third embodiment of the utility model.

[0026] Figure 6 is a structure schematic view of a valve cover provided in the fourth embodiment of the utility model.

[0027] Figure 7 is an axial sectional view of a theftproof valve provided in the fifth embodiment of the utility model.

[0028] Explanation of reference signs:

[0029] 1-valve cover; 11-valve cover main body; 111-connection part; 12-cover body; 13-valve body connection end; 2-theftproof unit; 21-convex rib; 3-special tool; 31-sleeve joint; 32-hand holding part; 33-notch; 4-valve body; 5-valve core; 6-valve rod. DETAILED DESCRIPTION

[0030] The utility model will be further described in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the parts related to the utility model are shown in the drawings, not all structures.

[0031] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0032] In the description of the embodiment, the terms "upper", "lower", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, which is only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0033] In the utility model, the valve cover has the original continuous outer surface, the continuous outer surface can be a plane or a curved surface, and the "convex shape" refers to the structure protruding from the outer surface of the valve cover, such as a convex point, a convex rib, a convex platform and the like. Correspondingly, the "concave shape" refers to the structure recessed in the outer surface of the valve cover, such as a concave point, a concave groove, a concave surface and the like. Embodiment

[0034] Figure 1 is a cross-sectional view of a valve cover provided in the first embodiment of the utility model. Figure 2 is another cross-sectional view of a valve cover provided in the first embodiment of the utility model. In combination with Figure 1 and Figure 2 , the outer surface of the valve cover 1 provided in the embodiment has an anti-theft unit 2.

[0035] The valve generally comprises at least a valve cover 1, a valve body 4 (see Figure 7 ) and a valve core 5 (see Figure 7 ), and the valve cover 1 and the valve body 4 are often fixed by screwing through threads. The conventional tool used for screwing and installing the valve cover 1 is a wrench, and correspondingly, the outer surface of the valve cover 1 has a wrench opening area plane matched with the wrench. When disassembling, the wrench is only needed to be attached and clamped with the wrench opening area to screw the valve cover 1 for disassembly. Therefore, even if the key (switch handle) of the valve is taken away, the user can directly disassemble the valve cover 1 by using the conventional tool (wrench, pliers, etc.) capable of being screwed with the plane to open the valve core 5 without damaging the valve body 4.

[0036] To this end, the embodiment provides a valve cover 1, one or more anti-theft units 2 with concave-convex shapes are additionally arranged on the outer surface of the valve cover 1. The anti-theft unit 2 with the concave-convex shape will destroy the continuity of the outer surface of the valve cover 1, so that the inner surface of the conventional tool (such as a wrench, pliers, etc.) cannot be completely attached with the outer surface of the valve cover 1 with the anti-theft unit 2, and cannot be clamped with the anti-theft unit 2 with the concave / convex shape. The special tool 3 (see Figure 4 ) can have a notch or protrusion corresponding to the anti-theft unit 2 with the concave / convex shape, and can be clamped with the anti-theft unit 2 on the outer surface of the valve cover 1 to screw the valve cover 1, so as to ensure the normal disassembly of the valve cover 1, and make the valve only be opened by the key and cannot be stolen by other conventional disassembly means without damaging the valve components, thereby playing a role of preventing water theft.

[0037] Wherein, the shape structure of the valve cover 1 is not limited here, the outer surface of the valve cover 1 can be a curved surface ( Figure 1 ) or a plane ( Figure 2 ), or can also be formed with a curved surface and a plane at the same time in different regions. Preferably, as Figure 1As shown, in order to facilitate processing while saving costs, the outer surface of the valve cover 1 is formed as a circular surface, compared with the flat surface, the wall thickness of the valve cover 1 of the circular surface is more uniform, thereby reducing the volume and weight of the valve cover 1, saving costs. In addition, the circular surface can further prevent users from disassembling the valve cover 1 using a wrench or other conventional tools with a flat inner surface, and the convex or concave anti-theft unit 2 on the circular surface can be matched with the special tool 3, thereby achieving the effect that the valve cover 1 can be screwed and disassembled by using the special tool 3, and cannot be screwed and disassembled by using the conventional tool.

[0038] The anti-theft unit 2 can include convex points, convex ribs, convex bosses, grooves, concave surfaces, and other concave / convex shapes. The outer surface of the valve cover 1 can be provided with one or more anti-theft units 2, which are not limited herein. In addition, the outer surface of the valve cover 1 can also be provided with a single anti-theft unit 2, or multiple anti-theft units 2 can exist at the same time, all of which belong to the protection scope of the present application.

[0039] In some embodiments, as shown, Figure 2 As shown, since the valve cover 1 has a flat outer surface, it is easier to be screwed and disassembled by a conventional tool such as a wrench, therefore, the outer surface of the valve cover 1 can be further provided with at least one convex anti-theft unit 2. Compared with the concave shape, the convex shape can better damage the fitting surface of the conventional tool (such as a wrench, pliers, etc.) and the flat outer surface of the valve cover 1, so that the conventional tool cannot screw the valve cover 1 by fitting the outer surface of the valve cover 1, thereby achieving better anti-theft effect.

[0040] In the present embodiment, through the provision of the anti-theft unit 2, the conventional tool cannot completely fit the outer surface of the valve cover 1 for screwing, and the special tool 3 can be matched with the anti-theft unit 2 to screw and disassemble the valve cover 1, thereby ensuring the normal disassembly of the valve cover 1, making the valve only be opened by a key, and cannot be stolen by other conventional disassembly means without damaging the valve parts, thereby achieving the effect of preventing water theft. Embodiment

[0041] In the second embodiment of the present application, a more specific structure of the anti-theft unit 2 is provided, and other structures are the same as those of the first embodiment, which will not be repeated here.

[0042] Figure 3 is a structural schematic view of a valve cover provided in the second embodiment of the present application. Figure 4 is a structural schematic view of a special tool 3 corresponding to the valve cover provided in the second embodiment of the present application. In combination with Figure 3 and Figure 4 , it can be seen that the anti-theft unit 2 can be a convex rib 21 and / or a groove. In order to facilitate description, Figure 3In the embodiment, only the case that the anti-theft unit 2 is formed as the protrusions 21 is exemplarily shown, and those skilled in the art can understand that the case that the anti-theft unit 2 is formed as all protrusions 21, all recesses, or both protrusions 21 and recesses is also applicable to the embodiment.

[0043] By arranging the protrusions 21 or recesses on the surface of the valve cover 1, it is difficult for a conventional tool to cooperate with the outer surface of the valve cover 1 to be screwed, and the structure of the special tool 3 matched with the outer surface of the valve cover 1 is not limited, for example, the special tool 3 can have a sleeve part 31 and a hand-held part 32, the sleeve part 31 is formed as a hollow ring, and the inner surface of the sleeve part 31 is formed with notches 33 or protrusions corresponding to the protrusions 21 or recesses. Figure 4 In the embodiment, only the case that the special tool 3 is formed with the notches 33 is exemplarily shown, the notches 33 on the special tool 3 can be clamped and fixed with the protrusions 21 on the outer surface of the valve cover 1, and then the hand-held part 32 is rotated circumferentially to screw and disassemble the valve cover 1, thereby realizing the function of preventing the water from being stolen while ensuring the convenience of disassembling the valve cover 1. Moreover, the protrusions 21 and recesses are simple in structure and easy to process, and correspondingly, the special tool 3 matched with the protrusions 21 or recesses only needs to have notches 33 or protrusions corresponding to the protrusions 21 or recesses in the circumferential direction, which is more convenient for processing and manufacturing.

[0044] In the embodiment, only the case that the special tool 3 is formed with the notches 33 is exemplarily shown, the notches 33 on the special tool 3 can be clamped and fixed with the protrusions 21 on the outer surface of the valve cover 1, and then the hand-held part 32 is rotated circumferentially to screw and disassemble the valve cover 1, thereby realizing the function of preventing the water from being stolen while ensuring the convenience of disassembling the valve cover 1. Moreover, the protrusions 21 and recesses are simple in structure and easy to process, and correspondingly, the special tool 3 matched with the protrusions 21 or recesses only needs to have notches 33 or protrusions corresponding to the protrusions 21 or recesses in the circumferential direction, which is more convenient for processing and manufacturing.

[0045] Further, in order to more efficiently screw the valve cover 1, the number of clamping positions of the special tool 3 and the anti-theft unit 2 on the surface of the valve cover 1 can be increased, that is, the number of anti-theft units 2 on the outer surface of the valve cover 1 is increased, so that the outer surface of the valve cover 1 is formed with a plurality of anti-theft units 2. Further, in order to make the plurality of anti-theft units 2 bear force uniformly and reduce the risk of deformation and damage of a single anti-theft unit 2 due to excessive force, the plurality of anti-theft units 2 can be arranged in an array along the circumferential direction of the valve cover 1.

[0046] It should be noted that, in the "arranging the plurality of anti-theft units 2 in a circumferential array along the valve cover 1", the plurality of anti-theft units 2 can include both the grooves and the convex ribs 21, and it does not mean that the grooves are arranged in a circumferential array alone or the convex ribs 21 are arranged in a circumferential array alone. Preferably, when the number of the grooves and the convex ribs 21 in the plurality of anti-theft units 2 is equal, the grooves and the convex ribs 21 can be arranged alternately and spaced apart, so that the grooves and the convex ribs 21 are arranged in a circumferential array along the valve cover 1.

[0047] The number of the anti-theft units 2 on the outer surface of the valve cover 1 is not limited, Figure 3 The outer surface of the valve cover 1 is provided with four anti-theft units 2, but the utility model is not limited to this. Increasing the number of the anti-theft units 2 can increase the clamping points of the special tool 3 and the valve cover 1, thereby evenly dispersing the torque generated during screwing and reducing the damage risk of a single anti-theft unit 2. However, too many anti-theft units 2 will increase the material cost and the processing cost, and therefore, the number of the anti-theft units 2 is controlled within 2-6 (including 2 and 6), which can improve the structural stability of the anti-theft units 2 and save costs. Embodiment

[0048] The valve cover 1 with the inclined convex rib 21 is provided in the third embodiment of the utility model, and other structures are the same as those in the first embodiment and / or the second embodiment, which will not be repeated here.

[0049] Figure 5 It is a structure schematic view of the axial section of the valve cover provided in the third embodiment of the utility model. The anti-theft unit 2 in the second embodiment is formed as the convex rib 21 or the groove along the axial direction, which is more conducive to processing. However, when all the anti-theft units 2 are the convex ribs 21 and the number is even, a clamping surface can be formed between two adjacent convex ribs 21, so that the wrench plane can clamp two adjacent convex ribs 21 at the same time to achieve the purpose of screwing the valve cover 1.

[0050] In the present embodiment, as shown in Figure 5 The convex rib 21 is arranged in the axial direction of the valve cover 1 and inclined to the direction away from / near the outer surface of the valve cover 1, that is, the convex rib 21 extends in the upward / downward direction in the drawing and is inclined inwardly or outwardly. When the wrench is clamped on the convex rib 21, it will slide upwardly or downwardly along the inclined direction of the convex rib 21, which further reduces the possibility of the user disassembling the valve cover 1 by using the wrench and improves the anti-theft performance of the valve cover 1. Embodiment

[0051] Another valve cover 1 with an inclined convex rib 21 is provided in the fourth embodiment of the utility model, and other structures are the same as those in the first embodiment and / or the second embodiment, which will not be repeated here.

[0052] Figure 6is a structural schematic view of a valve cover provided in the fourth embodiment of the utility model. As shown in Figure 6 The valve cover 1 comprises a valve cover main body 11, a cover body 12 and a valve body connecting end 13. The cover body 12 is formed on one side of the valve cover main body 11, and the valve body connecting end 13 is arranged at the end of the cover body 12 away from the valve cover main body 11.

[0053] The valve cover 1 is screwed and fixed with the threads on the valve body 4 through the threads of the valve body connecting end 13. Since the connecting port of the valve body 4 is generally circular, the inner surface of the valve body connecting end 13 also forms a cylindrical cavity. In addition, in order to control the volume and weight of the valve cover 1, the outer diameter of the valve cover main body 11 is generally smaller than the outer diameter of the cover body 12 for connecting the valve body 4.

[0054] In addition, due to the difference in the outer diameters of the cover body 12 and the valve cover main body 11, the direct connection may not guarantee the strength of the connection position. In some preferred embodiments, the valve cover main body 11 also has a connecting portion 111 arranged at the end of the valve cover main body 11 close to the cover body 12, so as to gradually expand the outer diameter of the valve cover main body 11 and the cover body 12 to more smoothly connect them together. The specific way of expanding the outer diameter of the connecting portion 111 is not limited herein, and can be one or a combination of stepped diameter change, inclined surface diameter change or curved surface diameter change. Figure 6 For example, the connecting portion 111 is a combination of stepped diameter change and curved surface diameter change, which is more convenient for processing and can reduce the amount of material while guaranteeing the strength of the connection position of the valve cover main body 11 and the cover body 12, thereby saving costs.

[0055] In the present embodiment, the anti-theft unit 2 is a protruding rib 21, and the protruding rib 21 is at least partially arranged on the valve cover main body 11. Specifically, in some embodiments, the protruding rib 21 can be directly arranged on the surface of the valve cover main body 11, and preferably can be arranged on the connecting portion 111 (as shown in Figure 5 ), or in other embodiments, one end of the protruding rib 21 can be arranged on the surface of the cover body 12 and the other end can be arranged on the surface of the valve cover main body 11 (as shown in Figure 6 ). Considering that there may be stress concentration and weak points at the variable diameter structure (the connection position of the valve cover main body 11 and the cover body 12, and the connecting portion 111), the protruding rib 21 is arranged corresponding to the connection position and / or the connecting portion 111, which can play the role of a reinforcing rib and improve the strength of the region. Further, the cover body 12 is closer to the valve body connecting end 13, and one end of the protruding rib 21 is arranged on the cover body 12, so that the valve cover 1 can be screwed at a position closer to the valve body connecting end 13 during disassembly, thereby reducing the torque generated during disassembly of the valve cover 1.

[0056] Further preferably, the protruding rib 21 extends from the outer surface of the connecting portion 111 to the outer surface of the cover body 12, Figure 6In the preferred case, the upper end of the convex rib 21 is fixed to the surface of the minimum outer diameter of the connecting portion 111 (i.e. the uppermost edge of the connecting portion 111), the lower end of the convex rib 21 is fixed to the surface of the maximum outer diameter of the cover body 12 (i.e. the edge near the lower edge of the cover body 12, or the edge of the connecting portion between the cover body 12 and the valve body connecting end 13), and the outer surface of the convex rib 21 extends linearly from the upper end to the lower end. In this way, the length of the convex rib 21 can be increased, the reinforcing effect of the convex rib 21 can be improved, and the matching area of the special tool 3 can be increased.

[0057] It should be noted that the upper end of the convex rib 21 is arranged at any position on the outer surface of the valve cover body 11, and the lower end of the convex rib 21 is arranged at any position on the outer surface of the cover body 12, or the upper end and the lower end of the convex rib 21 are arranged on the surface of the valve cover body 11, which also belongs to the protection scope of the present application.

[0058] In the present embodiment, due to the variable diameter of the connecting position of the valve cover body 11 and the cover body 12, the convex rib 21 only needs to extend linearly to form an inclined convex rib, so that the structure of the valve cover 1 is more compact, the anti-theft effect of the inclined convex rib 21 is better, the material consumption of the convex rib 21 is small, the space occupation ratio is also small, which is beneficial to reduce the volume and weight of the valve body 4 and reduce the cost. Embodiment

[0059] In the fifth embodiment of the present application, a theft-proof valve with the valve cover 1 in any of the above embodiments is provided, wherein the structure of the valve cover 1 can be the same as any of the above embodiments, which will not be repeated here.

[0060] Figure 7 is the axial sectional view of the theft-proof valve provided in the fifth embodiment of the present application. As shown in Figure 7 The valve body 4 is connected with the valve cover 1 through threads, and the valve cover 1 is tightened with the valve body 4 when it rotates in the first direction. The valve core 5 is arranged in the valve body 4, the valve rod 6 is fixed relative to the valve cover 1 and is connected with the valve core 5 through threads, and the valve rod 6 drives the valve core 5 to rise when it rotates in the first direction. The anti-theft unit 2 arranged on the valve cover 1 can effectively prevent users from disassembling the valve cover 1 by using conventional tools, but the valve cover 1 can still be slightly twisted by using conventional tools, and the valve rod 6 can be rotated when the valve cover 1 is twisted, which finally causes the valve core 5 to rise.

[0061] It should be noted that the "first direction" can be clockwise or counterclockwise (i.e. the circumference of the bonnet 1) as viewed from the top end of the bonnet 1 downward, which is not limited herein, and in the present embodiment, the "first direction" is used to define the thread structure of the bonnet 1 and the valve body 4, and the thread structure of the valve stem 6 and the valve core 5, so that when the valve body 4 and the valve stem 6 rotate simultaneously in the first direction, the bonnet 1 is tightened and the valve core 5 is raised, and for the same reason, when the valve body 4 and the valve stem 6 rotate simultaneously in the second direction, the bonnet 1 is loosened and the valve core 5 is lowered.

[0062] In the present embodiment, by designing the threads between the bonnet 1 and the valve body 4, and the valve stem 6 and the valve core 5, so that when the bonnet 1 rotates in the first direction, it is tightened with the valve body 4, and when the valve stem 6 rotates in the first direction, it drives the valve core 5 to rise, so that even if the bonnet 1 is loosened, the valve core 5 cannot be lifted, thereby enhancing the anti-theft performance of the valve.

[0063] Obviously, the above embodiments of the present application are merely examples for clear illustration of the present application, and are not a limitation on the embodiments of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the scope of the present application. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent substitution and improvement within the spirit and principles of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A valve cover, characterized in that: include: The anti-theft unit (2) has a concave / convex shape and is formed on the outer surface of the valve cover (1), and is used for disassembling and assembling the valve cover (1) in cooperation with a special tool (3). The outer surface of the valve cover (1) is formed with a plurality of anti-theft units (2), and the plurality of anti-theft units (2) are arranged in a circumferential array along the valve cover (1). The anti-theft units (2) are convex ribs (21) and / or grooves.

2. The valve cover according to claim 1, wherein: The outer surface of the valve cover (1) is in the shape of a circular ring.

3. The valve cover according to claim 1, wherein: The anti-theft unit (2) is arranged along the axial direction of the valve cover (1).

4. The valve cover according to claim 1, wherein: The anti-theft unit (2) is a convex rib (21), and the convex rib (21) is arranged in an inclined manner in the axial direction of the valve cover (1) in a direction away from / close to the outer surface of the valve cover (1).

5. The valve cover according to claim 4, characterized in that include: Valve cover body (11); a cover body (12) disposed at one end of the valve cover body (11), wherein the outer diameter of the cover body (12) is greater than the outer diameter of the valve cover body (11); The valve body connecting end (13) is arranged at an end of the cover body (12) away from the valve cover main body (11) and is used for connecting to the valve body.

6. The valve cover according to claim 5, characterized in that The convex rib (21) extends from the outer surface of the valve cover body (11) to the outer surface of the cover body (12).

7. The valve cover according to claim 5, characterized in that The valve cover body (11) further includes: A connecting portion (111) is formed at one end of the valve cover body (11) close to the cover body (12), the connecting portion (111) having a step and / or a curved surface with a gradually expanding outer diameter, and the rib (21) extends from the outer surface of the connecting portion (111) to the outer surface of the cover body (12).

8. An anti-theft valve, characterized in that: A valve cover (1) according to any one of claims 1 to 7.

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