An alloy valve body screw that prevents loosening

Abstract

The utility model belongs to the technical field of valve body screws, and specifically relates to an anti-loosening alloy valve body screw, including a valve body, the interior of the valve body is connected with a screw by a thread, the upper end of the screw is welded with a top plate, an anti-loosening mechanism is provided on the screw, a plug is slidably connected to the interior of the top plate, an oil passage is opened inside the screw, and an oil outlet mechanism is provided inside the screw. The utility model introduces oil into the screw through the oil passage, and through the cooperation of the thread on the screw and the thread on the valve body, the thread on the valve body squeezes the top block, so that the lubricating oil can enter the thread, lubricate the threaded connection, and prevent the thread from rusting and getting stuck due to long-term use of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of valve body screws, in particular to an alloy valve body screw that is anti-loosening. Background Art

[0002] The utility model patent with announcement number CN211314154U discloses a double-cylinder valve body oil production screw pump rod breakage prevention device, including: an upper joint, a connecting sleeve, a lower joint, and a split spring valve system, the split spring valve system is composed of a first half valve body, a second half valve body, two thrust springs and two matching spring support seats that cooperate with each other, the first half valve body and the second half valve body have a mutually symmetrical 1 / 4 cylinder on the upper part, the double-cylinder structure can make the first half valve body and the second half valve body cooperate to automatically close or open when the light rod is lifted and dropped, and when the oil production screw suddenly breaks, the light rod channel is closed in time and automatically to prevent the underground oil from spraying and leaking to the ground, avoiding serious pollution to the ground environment; at the same time, the device has the characteristics of convenient replacement of parts and maintenance of equipment, which is conducive to improving production efficiency. In actual production, it also has the advantages of low cost, compact structure, stable operation, and reliable operation. The device adjusts the inside of the valve body by rotating the screw, but the screw on the valve body is easy to loosen during use, and the screw is easy to rust and get stuck after long-term use. Therefore, improvement is needed. Utility Model Content

[0003] The utility model aims to provide an alloy valve body screw rod that prevents loosening, thereby solving the problem that the screw rod on the valve body is easy to loosen when in use and is easy to rust and get stuck after long-term use.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-loosening alloy valve body screw, comprising a valve body, the interior of the valve body is connected to a screw via a thread, a top plate is welded to the upper end of the screw, an anti-loosening mechanism is arranged on the screw, a plug is slidably connected to the interior of the top plate, an oil channel is opened inside the screw, and an oil outlet mechanism is arranged inside the screw.

[0005] Preferably, the anti-loosening mechanism comprises a slip ring, the slip ring is slidably connected to the screw, a slider is welded inside the slip ring, a spring is arranged outside the screw, a connecting rod is welded at the lower end of the slip ring, a rack is welded at the lower end of the connecting rod, a tooth groove is provided at the upper end of the valve body, and the tooth groove and the rack are slidably connected. The spring acts on the slip ring, so that the slip ring is pressed down, and then the rack at the end of the connecting rod is pressed tightly in the tooth groove, so that the slip ring is limited, and the screw is limited, so as to prevent the screw from reversing and loosening after long-term use of the device.

[0006] Preferably, a slide groove is provided on the outer side of the screw rod, and the slide groove is slidably connected to the slider. The slide groove is provided to guide the movement of the slider.

[0007] Preferably, one end of the spring is welded to the top plate, and the other end of the spring is welded to the slip ring. By providing the spring, the slip ring is easy to reset.

[0008] Preferably, the oil outlet mechanism includes a retaining ring, the retaining ring is fixedly connected to the screw, a sealing block is slidably connected inside the screw, a compression spring is arranged inside the screw, one end of the sealing block away from the compression spring is fixedly connected to a top block, and the top block is slidably connected to the screw. Oil is introduced into the screw through the oil passage, and the threads on the screw cooperate with the threads on the valve body so that the threads on the valve body squeeze the top block, so that the lubricating oil can enter the threads to lubricate the threaded connection, thereby preventing the threads from rusting and getting stuck due to long-term use of the device.

[0009] Preferably, one end of the compression spring is fixedly connected to the sealing block, and the other end of the compression spring is fixedly connected to the retaining ring. By providing the compression spring, the sealing block is easy to reset.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] 1. The utility model acts on the slip ring through the spring, so that the slip ring is pressed down, and then the rack at the end of the connecting rod is pressed tightly in the tooth groove, so that the slip ring is limited, and the screw is limited to prevent the screw from reversing and loosening when the device is used for a long time.

[0012] 2. The utility model introduces oil into the screw through the oil channel, and through the cooperation between the thread on the screw and the thread on the valve body, the thread on the valve body squeezes the top block, so that the lubricating oil can enter the thread to lubricate the threaded connection, avoiding rust and jamming of the thread after long-term use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0014] Figure 2 For this utility model Figure 1 Schematic diagram of slip ring;

[0015] Figure 3 For this utility model Figure 1 A partial formal cross-sectional view of the screw;

[0016] Figure 4 For this utility model Figure 3 Enlarged view of point A.

[0017] In the figure: 1. valve body; 2. screw; 3. top plate; 4. anti-loosening mechanism; 5. plug; 6. oil channel; 7. oil outlet mechanism; 41. slip ring; 42. slider; 43. slide groove; 44. spring; 45. connecting rod; 46. rack; 47. tooth groove; 71. retaining ring; 72. sealing block; 73. compression spring; 74. top block. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1 , Figure 3 An alloy valve body screw for preventing loosening comprises a valve body 1, a screw 2 is connected to the inside of the valve body 1 through a thread, a top plate 3 is welded to the upper end of the screw 2, an anti-loosening mechanism 4 is arranged on the screw 2, a plug 5 is slidably connected to the inside of the top plate 3, an oil passage 6 is opened in the screw 2, and an oil outlet mechanism 7 is arranged in the screw 2.

[0020] See also Figure 1 , Figure 2 , Figure 3 The anti-loosening mechanism 4 includes a slip ring 41, which is slidably connected to the screw rod 2. A slider 42 is welded inside the slip ring 41, and a slide groove 43 is provided on the outer side of the screw rod 2. The slide groove 43 and the slider 42 are slidably connected. By setting the slide groove 43, the movement of the slider 42 is guided. A spring 44 is provided on the outer side of the screw rod 2. One end of the spring 44 is welded to the top plate 3, and the other end of the spring 44 is welded to the slip ring 41. By setting the spring 44, the slip ring 41 is easy to reset. A connecting rod 45 is welded to the lower end of the slip ring 41, and a rack 46 is welded to the lower end of the connecting rod 45. A tooth groove 47 is provided at the upper end of the valve body 1. The tooth groove 47 and the rack 46 are slidably connected. The spring 44 acts on the slip ring 41, so that the slip ring 41 is pressed down, and then the rack 46 at the end of the connecting rod 45 is pressed tightly in the tooth groove 47, so that the slip ring 41 is limited, so that the screw rod 2 is limited, and the device is prevented from being reversed and loosened after long-term use.

[0021] See also Figure 1 , Figure 4The oil outlet mechanism 7 includes a retaining ring 71, which is fixedly connected to the screw rod 2. A sealing block 72 is slidably connected inside the screw rod 2. A compression spring 73 is provided inside the screw rod 2. One end of the compression spring 73 is fixedly connected to the sealing block 72, and the other end of the compression spring 73 is fixedly connected to the retaining ring 71. By providing the compression spring 73, the sealing block 72 is easy to reset. The sealing block 72 is fixedly connected to one end away from the compression spring 73 with a top block 74. The top block 74 is slidably connected to the screw rod 2, and oil is introduced into the screw rod 2 through the oil passage 6. The thread on the screw rod 2 cooperates with the thread on the valve body 1, so that the thread on the valve body 1 squeezes the top block 74, so that the lubricating oil can enter the thread, lubricate the threaded connection, and prevent the thread from rusting and getting stuck after long-term use of the device.

[0022] The specific implementation process of the utility model is as follows: when the screw rod 2 is rotated, the slip ring 41 is manually moved upward, the slip ring 41 moves upward to squeeze the spring 44, the slip ring 41 moves upward to drive the connecting rod 45 to move upward, the connecting rod 45 drives the rack 46 to move upward and disengage from the tooth groove 47, and then the screw rod 2 and the valve body 1 are rotated to make a threaded motion. After the rotation is completed, the slip ring 41 is loosened, the spring 44 is reset to reset the slip ring 41, and the spring 44 acts on the slip ring 41, so that the slip ring 41 is pressed downward, thereby causing the end of the connecting rod 45 to The rack 46 is pressed into the tooth groove 47, so that the slip ring 41 is limited, and the screw 2 is limited to prevent the screw 2 from reversing and loosening during long-term use of the device. The thread on the screw 2 cooperates with the thread on the valve body 1, so that the thread on the valve body 1 squeezes the top block 74, causing the top block 74 to move into the screw 2, thereby disengaging the sealing block 72 and the screw 2, so that the lubricating oil can enter the thread to lubricate the threaded connection, thereby preventing the thread from rusting and getting stuck due to long-term use of the device.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An alloy valve body screw that prevents loosening, comprising a valve body (1), characterized in that: The interior of the valve body (1) is connected to a screw rod (2) via a thread, a top plate (3) is welded to the upper end of the screw rod (2), an anti-loosening mechanism (4) is provided on the screw rod (2), a plug (5) is slidably connected to the interior of the top plate (3), an oil passage (6) is opened inside the screw rod (2), and an oil outlet mechanism (7) is provided inside the screw rod (2).

2. The anti-loosening alloy valve body screw according to claim 1, characterized in that: The anti-loosening mechanism (4) comprises a slip ring (41), the slip ring (41) and the screw rod (2) are slidably connected, a slider (42) is welded inside the slip ring (41), a spring (44) is arranged on the outside of the screw rod (2), a connecting rod (45) is welded at the lower end of the slip ring (41), a rack (46) is welded at the lower end of the connecting rod (45), a tooth groove (47) is provided at the upper end of the valve body (1), and the tooth groove (47) and the rack (46) are slidably connected.

3. The anti-loosening alloy valve body screw according to claim 2, characterized in that: A sliding groove (43) is provided on the outer side of the screw rod (2), and the sliding groove (43) is slidably connected to the sliding block (42).

4. The anti-loosening alloy valve body screw according to claim 2, characterized in that: One end of the spring (44) is welded to the top plate (3), and the other end of the spring (44) is welded to the slip ring (41).

5. The anti-loosening alloy valve body screw according to claim 1, characterized in that: The oil outlet mechanism (7) comprises a retaining ring (71), the retaining ring (71) is fixedly connected to the screw (2), a sealing block (72) is slidably connected inside the screw (2), a compression spring (73) is arranged inside the screw (2), one end of the sealing block (72) away from the compression spring (73) is fixedly connected to a top block (74), and the top block (74) is slidably connected to the screw (2).

6. The anti-loosening alloy valve body screw according to claim 5, characterized in that: One end of the compression spring (73) is fixedly connected to the sealing block (72), and the other end of the compression spring (73) is fixedly connected to the retaining ring (71).

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