Mistaken touch prevention valve structure

Abstract

The utility model relates to the technical field of valves, and discloses a mistaken touch prevention valve structure which comprises a valve body, a valve ball is installed in the valve body, a valve rod is installed in the middle of the upper portion in the valve body, and the bottom end of the valve rod is fixedly connected to the middle of the top of the valve ball. The top end of the valve rod extends to the position above the valve body and is fixedly provided with a worm and gear hand wheel, and a mistaken touch prevention mechanism is arranged in the middle of the top of the valve body. Through the cooperation of the protective cover, the limiting cover, the iron limiting block, the guide sliding groove, the lower magnetic sheet and the upper magnetic sheet, the height position of the protective cover can be conveniently and vertically adjusted, the iron limiting block and the upper magnetic sheet in the guide sliding groove are magnetically attracted together, the protective cover can be conveniently positioned, and the working efficiency is improved. And the worm and gear hand wheel is sleeved with the interior of the protective cover, so that the worm and gear hand wheel is conveniently protected, the worm and gear hand wheel cannot rotate at the moment, the mistaken touch prevention function of the valve is added, and the situation that the opening and closing state of the valve is easily changed due to the fact that a worker accidentally touches the worm and gear hand wheel is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and more particularly to a valve structure for preventing accidental touching. Background Art

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and regulate and control the parameters of the conveyed medium (temperature, pressure, and flow). Valves are control components in fluid conveying systems, performing functions such as shutoff, regulation, diversion, backflow prevention, pressure stabilization, diversion, or overflow pressure relief. Valves can be categorized by their function as shutoff valves, check valves, and regulating valves. Valves used in fluid control systems come in a wide variety of types and specifications, from the simplest shutoff valves to the most complex valves used in automatic control systems. Valves can be used to control the flow of various types of fluids, including air, water, steam, various corrosive media, mud, oil, liquid metal, and radioactive media.

[0003] When the valve is currently in use, staff can use the worm gear handwheel to rotate the valve stem and valve ball to change the position of the valve ball and adjust the valve's opening and closing state. However, the worm gear handwheel of the existing valve is usually directly exposed to the outside world. At certain times, staff may inadvertently touch the worm gear handwheel, thereby changing the valve's opening and closing state and affecting the normal operation of the valve. This needs to be improved. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a valve structure for preventing accidental touch to solve the problems existing in the above-mentioned background technology.

[0005] When the cam is opened, the valve body is locked and the valve stem is fixedly installed in the middle of the top of the valve ball, and the top of the valve stem extends to the upper part of the valve body and is fixedly installed with a worm gear handwheel. The middle part of the top of the valve body is provided with an anti-touch mechanism, and the anti-touch mechanism includes a limit cover, the bottom of the limit cover is fixedly connected to the middle part of the top of the valve body, the limit cover is located below the worm gear handwheel, the outer wall of the valve stem is rotatably sleeved on the inside of the limit cover, the outer wall of the limit cover is provided with a protective cover, the lower part of the inner wall of the protective cover is movably sleeved on the outer wall of the limit cover, the four sides of the lower inner wall of the protective cover are fixedly connected with an iron limit block, the outer wall of the limit cover is provided with a guide slot around the outer wall of the limit cover, the outer wall of the iron limit block is slidably connected to the inside of the guide slot, and a protective cover is provided on the right side of the protective cover.

[0006] Furthermore, a lower magnetic piece is fixedly embedded in the lower part of the guide slot, and an upper magnetic piece is fixedly embedded in the upper part of the guide slot.

[0007] Furthermore, one side of the iron limit block is located on one side of the lower magnetic sheet, and the iron limit block is magnetically connected to the lower magnetic sheet.

[0008] Furthermore, an annular groove is opened above the outer wall of the protective cover, and the inner sliding connection of the annular groove is connected to a limit slider, one side of the limit slider is fixedly connected to a connecting rope, and one end of the connecting rope is fixedly connected to one side of the protective cover.

[0009] Furthermore, an internal thread is provided on the upper portion of the interior of the protective cover, and an external thread matching the interior of the protective cover is provided on the outer wall of the protective cover.

[0010] Technical effects and advantages of this utility model:

[0011] 1. The utility model adopts the cooperation of a protective cover, a limit cover, an iron limit block, a guide slide, a lower magnetic piece and an upper magnetic piece to facilitate vertical adjustment of the height position of the protective cover, and makes the iron limit block magnetically adsorbed with the upper magnetic piece inside the guide slide, so as to facilitate positioning of the protective cover, and the inside of the protective cover is sleeved on the outside of the worm gear handwheel, so as to facilitate protection of the worm gear handwheel. At this time, the worm gear handwheel cannot be rotated, thereby increasing the anti-accidental touch function of the valve and preventing the staff from accidentally touching the worm gear handwheel and easily changing the opening and closing state of the valve.

[0012] 2. When the utility model protects the worm gear handwheel through the protective cover, the staff can screw the protective cover to the upper part of the protective cover to facilitate sealing the upper part of the protective cover and further protect the worm gear handwheel. The protective cover can be easily protected by the cooperation of the connecting rope, the limit slider and the annular slide groove, which can prevent the protective cover from being lost when not in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0014] Figure 2 This is a schematic cross-sectional view of the protective cover and limiting cover structure of the present invention.

[0015] Figure 3 This is a schematic cross-sectional view of the protective cover and the limiting cover of the utility model from above.

[0016] Figure 4 This is a schematic diagram of the protective cover and annular chute structure of the utility model.

[0017] Figure 5 This is a structural schematic diagram of the anti-accidental-touch mechanism of the present invention protecting the worm gear handwheel.

[0018] The accompanying drawings are marked as follows: 1. valve body; 2. valve ball; 3. valve stem; 4. worm gear handwheel; 5. anti-accidental touch mechanism; 51. protective cover; 52. limit cover; 53. iron limit block; 54. guide slide; 55. lower magnetic plate; 56. upper magnetic plate; 57. protective cover; external thread; 58. connecting rope; 59. limit slider; 591. annular slide. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the drawings in the present invention. In addition, the forms of the various structures described in the following embodiments are merely examples. The anti-accidental-touch valve structure involved in the present invention is not limited to the various structures described in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] Example 1:

[0021] like Figure 1-5 As shown, a valve structure for preventing accidental touch is shown, comprising a valve body 1, a valve ball 2 is installed inside the valve body 1, a valve stem 3 is installed in the middle of the upper part of the valve body 1, the bottom end of the valve stem 3 is fixedly connected to the middle of the top of the valve ball 2, the top end of the valve stem 3 extends to the top of the valve body 1 and is fixedly installed with a worm gear handwheel 4, an anti-accidental touch mechanism 5 is provided in the middle of the top of the valve body 1, the anti-accidental touch mechanism 5 includes a limiting cover 52, the bottom of the limiting cover 52 is fixedly connected to the middle of the top of the valve body 1, the limiting cover 52 is located below the worm gear handwheel 4, the outer wall of the valve stem 3 is rotatably sleeved on the inside of the limiting cover 52, and the limiting A protective cover 51 is provided on the outer wall of the cover 52, and the lower part of the interior of the protective cover 51 is movably connected to the outer wall of the limit cover 52. Iron limit blocks 53 are fixedly connected to the four sides of the lower part of the inner wall of the protective cover 51, and guide grooves 54 are provided around the outer wall of the limit cover 52. The outer wall of the iron limit block 53 is slidably connected to the inside of the guide groove 54, and a lower magnetic piece 55 is fixedly inlaid at the lower part of the guide groove 54, and an upper magnetic piece 56 is fixedly inlaid at the upper part of the guide groove 54. One side of the iron limit block 53 is located on one side of the lower magnetic piece 55, and the iron limit block 53 and the lower magnetic piece 55 are magnetically connected.

[0022] In this embodiment, by moving the protective cover 51 upward, the protective cover 51 drives the iron limit block 53 to slide inside the guide groove 54. At this time, the cooperation of the iron limit block 53 and the guide groove 54 is utilized to facilitate vertical guidance of the protective cover 51. The iron limit block 53 can be moved to one side of the upper magnetic piece 56, and the iron limit block 53 and the upper magnetic piece 56 are magnetically connected together to facilitate positioning of the protective cover 51, so that the protective cover 51 can be moved upward and sleeved on the outside of the worm gear handwheel 4, so as to facilitate protection of the worm gear handwheel 4. At this time, the worm gear handwheel 4 cannot rotate, thereby increasing the anti-accidental touch function of the valve.

[0023] Example 2:

[0024] like Figure 1-5 As shown, a protective cover 57 is provided on the right side of the protective cover 51, and an annular groove 591 is provided above the outer wall of the protective cover 51. The internal sliding connection of the annular groove 591 is connected to a limiting slider 59, and one side of the limiting slider 59 is fixedly connected to a connecting rope 58. One end of the connecting rope 58 is fixedly connected to one side of the protective cover 57. An internal thread is provided above the inside of the protective cover 51, and an external thread compatible with the inside of the protective cover 51 is provided on the outer wall of the protective cover 57.

[0025] In this embodiment, the provision of the connecting rope 58 facilitates the connection between the protective cover 57 and the limiting slider 59, preventing the protective cover 57 from being lost when not in use. When the worm gear handwheel 4 is protected by the protective cover 51, the staff can spirally connect the protective cover 57 to the top of the protective cover 51. The protective cover 57 can also drive the limiting slider 59 to slide inside the annular groove 591 through the connecting rope 58, so that the protective cover 57 can close the top of the protective cover 51 and make the protective cover 57 located above the worm gear handwheel 4, further protecting the worm gear handwheel 4.

[0026] In summary, if Figure 1-5As shown, this anti-accidental-touch valve structure, when in use, if the worm gear handwheel 4 of the valve needs to be operated to prevent accidental touch, the staff can move the protective cover 51 upwards and sleeve it on the outer wall of the worm gear handwheel 4, and the protective cover 51 simultaneously drives the iron limit block 53 to slide upward inside the guide slot 54, so that the iron limit block 53 disengages from one side of the lower magnetic plate 55 and moves the iron limit block 53 to one side of the upper magnetic plate 56, and uses the magnetic attraction force between the upper magnetic plate 56 and the iron limit block 53 to position the protective cover 51 so that the inside of the protective cover 51 can be sleeved on the outside of the worm gear handwheel 4, and the staff then spirally connects the protective cover 57 to the top of the protective cover 51. At the same time, the protective cover 57 drives the limit slider 59 to slide inside the annular slot 591 through the connecting rope 58, so that the protective cover 57 can close the top of the protective cover 51 and further protect the worm gear handwheel 4.

[0027] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0028] Secondly: The drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the utility model can be combined with each other.

[0029] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A valve structure for preventing accidental touch, comprising a valve body (1), characterized in that: A valve ball (2) is installed inside the valve body (1), a valve stem (3) is installed in the middle of the upper part of the valve body (1), the bottom end of the valve stem (3) is fixedly connected to the middle of the top of the valve ball (2), the top end of the valve stem (3) extends to the top of the valve body (1) and is fixedly installed with a worm gear handwheel (4), an anti-accidental touch mechanism (5) is provided in the middle of the top of the valve body (1), the anti-accidental touch mechanism (5) includes a limit cover (52), the bottom of the limit cover (52) is fixedly connected to the middle of the top of the valve body (1), and the limit cover (52) is located at the worm gear handwheel (4), the outer wall of the valve stem (3) is rotatably sleeved on the inside of the limit cover (52), the outer wall of the limit cover (52) is provided with a protective cover (51), the lower part of the inside of the protective cover (51) is movably sleeved on the outer wall of the limit cover (52), the four sides of the lower part of the inner wall of the protective cover (51) are fixedly connected with an iron limit block (53), the four sides of the outer wall of the limit cover (52) are provided with a guide slot (54), the outer wall of the iron limit block (53) is slidably connected to the inside of the guide slot (54), and a protective cover (57) is provided on the right side of the protective cover (51).

2. The anti-accidental-touch valve structure according to claim 1, characterized in that: A lower magnetic piece (55) is fixedly embedded in the lower portion of the guide chute (54), and an upper magnetic piece (56) is fixedly embedded in the upper portion of the guide chute (54).

3. The anti-accidental-touch valve structure according to claim 1, characterized in that: One side of the iron limit block (53) is located on one side of the lower magnetic piece (55), and the iron limit block (53) and the lower magnetic piece (55) are magnetically connected.

4. The anti-accidental-touch valve structure according to claim 1, characterized in that: An annular sliding groove (591) is provided above the outer wall of the protective cover (51), and a limiting slider (59) is slidably connected inside the annular sliding groove (591), and a connecting rope (58) is fixedly connected to one side of the limiting slider (59), and one end of the connecting rope (58) is fixedly connected to one side of the protective cover (57).

5. The anti-accidental-touch valve structure according to claim 1, characterized in that: An internal thread is provided on the upper portion of the interior of the protective cover (51), and an external thread matching the interior of the protective cover (51) is provided on the outer wall of the protective cover (57).

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