Labor-saving valve rod of regulating valve

Abstract

The utility model discloses a labor-saving valve rod of a regulating valve, which belongs to the technical field of regulating valves and comprises a valve rod mounted in the regulating valve, and a turntable is fixed at the top end of the valve rod; a hollow containing cavity is formed in the valve rod, a first rod handle and a second rod handle are placed in the containing cavity, the first rod handle and the second rod handle are rotationally connected through a connecting pin, and the first rod handle is located above the second rod handle. The length of the first rod handle is larger than the radius of the rotary disc, and two screws penetrate through the rotary disc in a matched mode. According to the labor-saving valve rod of the adjusting valve, the first rod handle can be pulled out of the containing cavity, the first rod handle is limited between the two screws by rotating the first rod handle, the screw rod can be easily rotated by holding the first rod handle, at the moment, the selected rotating force arm is long, and more labor is saved when the valve rod is rotated.

Description

Technical Field

[0001] The utility model relates to the technical field of regulating valves, in particular to a labor-saving valve stem of a regulating valve. Background Art

[0002] Control valve is a general term for valves. Most of the control valves on the market are flow-adjustable control valves.

[0003] Existing regulating valves all adjust the flow by rotating the valve stem. After long-term use, the threads of the valve stem exposed to the air are prone to rust. At this time, it is very difficult to rotate the valve stem, and it may even be impossible to rotate the valve stem. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a labor-saving valve stem of a regulating valve, wherein the handle of the labor-saving valve stem of the regulating valve can be pulled out of the storage cavity, and is limited between two screws by rotating the handle. The screw can be easily rotated by holding the handle. At this time, the force arm of rotation is longer, which will save more effort when rotating the valve stem.

[0005] In order to solve the above technical problems, the technical solution of the utility model is achieved as follows:

[0006] A labor-saving valve stem of a regulating valve comprises a valve stem installed in the regulating valve, a turntable being fixed to the top end of the valve stem; a hollow receiving chamber is provided inside the valve stem, a rod handle 1 and a rod handle 2 are placed in the receiving chamber, the rod handle 1 and the rod handle 2 are rotatably connected by a connecting pin, and the rod handle 1 is located above the rod handle 2; the length of the rod handle 1 is greater than the radius of the turntable, and two screws are penetrated and fitted on the turntable; wherein the rod handle 1 can be pulled out of the receiving chamber, and by rotating the rod handle 1 and confined between the two screws, the screw can be easily rotated by holding the rod handle 1.

[0007] By adopting the above solution, when directly rotating the turntable cannot drive the valve stem to rotate, the handle can be pulled out of the storage cavity and limited between the two screws by rotating the handle. The screw can be easily rotated by holding the handle. At this time, the force arm of rotation is longer, which will save more effort when rotating the valve stem.

[0008] As a preferred embodiment of a labor-saving valve stem of a regulating valve, the diameters of the first and second rods are equal, but the length of the first rod is greater than the length of the second rod.

[0009] In order to ensure that handle 1 is more labor-saving when rotating, the length of handle 1 is designed to be greater than that of handle 2. Since both handles 1 and 2 are placed in the storage cavity, the depth of the storage cavity is constant, and the total length of handle 1 and handle 2 is constant. Therefore, the shorter handle 2 is, the longer handle 1 will be, which will save more labor when rotating handle 1.

[0010] As an optimal implementation of a labor-saving valve stem of a regulating valve, the bottom end of the second handle is fixedly connected to a limiting ball, and a screw sleeve used in conjunction with the limiting ball is threadedly installed at the opening of the storage cavity; when the first handle is pulled out of the storage cavity, the limiting ball is just stuck by the screw sleeve; the first handle and the second handle are both located in the screw sleeve.

[0011] By adopting the above solution, in order to prevent the second rod handle from being pulled out of the storage cavity by the first rod handle, the first rod handle and the second rod handle are pulled out of the storage cavity from the screw sleeve. At this time, the screw sleeve is used to clamp the limiting ball to prevent the second rod handle from being pulled out of the storage cavity by the first rod handle.

[0012] As a preferred embodiment of a labor-saving valve stem of a regulating valve, a threaded head is fixed to the bottom end of the second handle, and the threaded head is engaged in the limiting ball through a thread.

[0013] With the above solution, in order to facilitate the installation and removal of the limiting ball, the second handle and the limiting ball are installed through a thread head, which makes installation and removal more convenient.

[0014] As a preferred embodiment of the labor-saving valve stem of a regulating valve, the diameter of the stem handle 1 is equal to the minimum distance between the two screws.

[0015] By adopting the above solution, in order to ensure that the handle 1 is just clamped between the two screws, the diameter of the handle 1 is designed to be equal to the minimum distance between the two screws. At this time, the handle 1 can be clamped between the two screws, and it will be more stable when rotating the handle 1.

[0016] As a preferred embodiment of the labor-saving valve stem of a regulating valve, both screws are installed upward from the lower surface of the rotary disk.

[0017] By adopting the above solution, in order to prevent the screw from interfering with the rotation of the turntable, the screw can be rotated to the bottom of the turntable when the turntable is rotated to prevent the screw from protruding from the upper surface of the turntable, thereby preventing the screw from interfering with the rotation of the turntable.

[0018] After adopting the above technical solution, the beneficial effects of the utility model are:

[0019] 1. When directly rotating the turntable cannot drive the valve stem to rotate, you can pull the handle out of the storage chamber and limit it between the two screws by rotating the handle. You can easily rotate the screw by holding the handle. At this time, the longer the rotation arm is, the more effort it will take to rotate the valve stem.

[0020] 2. To ensure that handle 1 is more labor-saving when rotating, handle 1 is designed to be longer than handle 2. Since both handles 1 and 2 are placed in the storage cavity, the depth of the storage cavity is constant, and the total length of handle 1 and handle 2 is constant. Therefore, the shorter handle 2 is, the longer handle 1 will be, which will save more labor when rotating handle 1.

[0021] 3. To prevent the second handle from being pulled out of the storage chamber by the first handle, pull the first and second handles out of the storage chamber from the screw sleeve. At this time, use the screw sleeve to clamp the limiting ball to prevent the second handle from being pulled out of the storage chamber by the first handle.

[0022] 4. In order to facilitate the installation and removal of the limit ball, the handle 2 and the limit ball are installed through a screw head, which will be more convenient during installation and removal;

[0023] 5. To ensure that the handle fits perfectly between the two screws, the diameter of the handle is designed to be equal to the minimum distance between the two screws. This way, the handle can fit perfectly between the two screws, making it more stable when rotating.

[0024] 6. In order to prevent the screw from interfering with the rotation of the turntable, the screw can be rotated to the bottom of the turntable when rotating the turntable to prevent the screw from protruding from the upper surface of the turntable, thereby preventing the screw from interfering with the rotation of the turntable. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0026] Figure 1 This is the three-dimensional structure of the utility model when not in use Figure 1 ;

[0027] Figure 2 This is the three-dimensional structure of the utility model when not in use Figure 2 ;

[0028] Figure 3 For display Figure 1 Internal three-dimensional structure diagram;

[0029] Figure 4 for Figure 1 Three-dimensional structural diagram applied to regulating valve;

[0030] Figure 5 For display Figure 4 Internal three-dimensional structure diagram;

[0031] Figure 6 The three-dimensional structure of the utility model when in use Figure 1 ;

[0032] Figure 7 The three-dimensional structure of the utility model when in use Figure 2 ;

[0033] Figure 8 For display Figure 6 Internal three-dimensional structure diagram;

[0034] Figure 9 for Figure 8 A partial enlarged view of point A in the middle;

[0035] Figure 10 for Figure 6 Three-dimensional structural diagram applied to regulating valve;

[0036] Figure 11 For display Figure 10 Internal three-dimensional structure diagram;

[0037] Markings in the figure: 1-regulating valve; 2-valve stem; 3-turntable; 4-storage chamber; 5-handle 1; 6-handle 2; 7-connecting pin; 8-screw; 9-limiting ball; 10-screw sleeve; 11-thread head. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] like Figures 1 to 11 As shown, a labor-saving valve stem for a regulating valve includes a valve stem 2 installed in a regulating valve 1, with a turntable 3 fixed to the top of the valve stem 2. The valve stem 2 has a hollow storage chamber 4 formed inside, within which are placed a lever handle 5 and a lever handle 6. The lever handle 5 and the lever handle 6 are rotatably connected by a connecting pin 7, with the lever handle 5 positioned above the lever handle 6. The length of the lever handle 5 is greater than the radius of the turntable 3, and the turntable 3 is penetrated by two screws 8. The lever handle 5 can be pulled out of the storage chamber 4. By rotating the lever handle 5 and confining it between the two screws 8, the screw can be easily rotated by holding the lever handle 5. If directly rotating the turntable 3 fails to rotate the valve stem 2, the lever handle 5 can be pulled out of the storage chamber 4. By rotating the lever handle 5 and confining it between the two screws 8, the screw can be easily rotated by holding the lever handle 5. In this case, the lever arm for rotation is longer, which reduces the effort required to rotate the valve stem 2.

[0040] like Figure 3As shown, the diameters of handle 1 5 and handle 2 6 are equal, but handle 1 5 is longer than handle 2 6. To ensure that handle 1 5 is more labor-efficient when rotating, handle 1 5 is designed to be longer than handle 2 6. Since both handle 1 5 and handle 2 6 are placed within storage cavity 4, the depth of storage cavity 4 is constant, and the total length of handle 1 5 and handle 2 6 is constant. Therefore, the shorter handle 2 6 is, the longer handle 1 5 will be, saving more effort when rotating handle 1 5.

[0041] like Figures 8 and 9 As shown, the bottom end of the second handle 6 is fixedly connected to the limiting ball 9, and the opening of the storage chamber 4 is threadedly installed with a screw sleeve 10 for use with the limiting ball 9; when the first handle 5 is pulled out of the storage chamber 4, the limiting ball 9 is just caught by the screw sleeve 10; the first handle 5 and the second handle 6 are both located inside the screw sleeve 10. In order to prevent the second handle 6 from being pulled out of the storage chamber 4 by the first handle 5, the first handle 5 and the second handle 6 are pulled out of the screw sleeve 10, at which time the screw sleeve 10 is used to catch the limiting ball 9, thereby preventing the second handle 6 from being pulled out of the storage chamber 4 by the first handle 5.

[0042] like Figure 9 As shown, a thread head 11 is fixed to the bottom end of the handle 2 6, and the thread head 11 is threadedly engaged in the limiting ball 9. In order to facilitate the installation and removal of the limiting ball 9, the handle 2 6 and the limiting ball 9 are installed through the thread head 11, which is more convenient during installation and removal.

[0043] like Figure 6 As shown, the diameter of the handle 5 is equal to the minimum distance between the two screws 8. To ensure that the handle 5 is precisely engaged between the two screws 8, the diameter of the handle 5 is designed to be equal to the minimum distance between the two screws 8. In this way, the handle 5 can be engaged between the two screws 8, making the handle 5 more stable when rotating.

[0044] like Figure 2 、 Figure 7 As shown, the two screws 8 are mounted upward from the lower surface of the turntable 3. To prevent the screws 8 from interfering with the rotation of the turntable 3, the screws 8 can be rotated to the bottom of the turntable 3 when the turntable 3 is rotated to prevent the screws 8 from protruding from the upper surface of the turntable 3, thereby preventing the screws 8 from interfering with the rotation of the turntable 3.

[0045] The working principle of this utility model:

[0046] During installation, first place the limiting ball 9 in the receiving cavity 4, then install the screw sleeve 10 at the opening of the receiving cavity 4. Then, place the connection between the first handle 5 and the second handle 6 in the receiving cavity 4, with the second handle 6 located below the first handle. By rotating the second handle 6 and connecting it to the limiting ball 9 using the screw head 11, the installation of the structure is completed.

[0047] During application, when directly rotating the turntable 3 cannot drive the valve stem 2 to rotate, the handle 5 can be pulled out of the storage chamber 4. By rotating the handle 5 and limiting it between the two screws 8, the screw can be easily rotated by holding the handle 5. At this time, the force arm of rotation is longer, which will save more effort when rotating the valve stem 2.

[0048] The above are only preferred embodiments of the present invention and are 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 labor-saving valve stem for a regulating valve, comprising a valve stem (2) installed in a regulating valve (1), wherein a rotary disk (3) is fixed to the top end of the valve stem (2); Its characteristics are: A hollow receiving chamber (4) is provided inside the valve stem (2), and a rod handle 1 (5) and a rod handle 2 (6) are placed in the receiving chamber (4). The rod handle 1 (5) and the rod handle 2 (6) are rotatably connected via a connecting pin (7), and the rod handle 1 (5) is located above the rod handle 2 (6); The length of the handle (5) is greater than the radius of the turntable (3), and two screws (8) are fitted through the turntable (3); wherein the handle (5) can be pulled out of the storage chamber (4), and by rotating the handle (5) and limiting it between the two screws (8), the screw can be easily rotated by holding the handle (5).

2. The labor-saving valve stem of the regulating valve according to claim 1, characterized in that: The diameters of the first handle (5) and the second handle (6) are equal, but the length of the first handle (5) is greater than the length of the second handle (6).

3. The labor-saving valve stem of the regulating valve according to claim 2, characterized in that: The bottom end of the second handle (6) is fixedly connected to a limiting ball (9), and a screw sleeve (10) used in conjunction with the limiting ball (9) is installed at the opening of the receiving cavity (4) through a thread.

4. The labor-saving valve stem of the regulating valve according to claim 3, characterized in that: When the handle 1 (5) is pulled out of the receiving chamber (4), the limiting ball (9) is just caught by the screw sleeve (10).

5. The labor-saving valve stem of the regulating valve according to claim 4, characterized in that: The rod handle 1 (5) and the rod handle 2 (6) are both located in the threaded sleeve (10).

6. The labor-saving valve stem of the regulating valve according to claim 5, characterized in that: A thread head (11) is fixed to the bottom end of the second handle (6), and the thread head (11) is engaged in the limiting ball (9) through a thread.

7. The labor-saving valve stem of the regulating valve according to claim 1, characterized in that: The diameter of the handle (5) is equal to the minimum distance between the two screws (8).

8. The labor-saving valve stem of a regulating valve according to any one of claims 1 to 7, characterized in that: The two screws (8) are both mounted upwardly in cooperation with the lower surface of the turntable (3).

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