Gate valve rod with protection mechanism

Abstract

The utility model discloses a gate valve rod with a protection mechanism, which belongs to the technical field of valve rods and comprises a valve rod body, a protection sleeve is arranged on the surface of the upper end of the valve rod body, fixing components are arranged on two sides of the protection sleeve, pin holes are arranged on two sides of the valve rod body, and external threads are arranged on the surface of the lower end of the valve rod body. The fixing assembly is arranged, the limiting block is pulled to enable the fixing pin to be retracted into the sleeve, the reset spring is compressed, the protective sleeve is arranged on the surface of the valve rod body in a sleeved mode, the limiting block is loosened, the fixing pin moves back under the elastic force effect of the reset spring, the fixing pin is inserted into the pin hole, and the valve rod body is fixed. The clamping block is clamped into the second limiting groove, the limiting rod abuts against the side edge of the limiting block, the limiting block cannot move, it is guaranteed that the fixing pin cannot be disengaged from the pin hole, and it is guaranteed that the protective sleeve is fixed firmly.

Description

Technical Field

[0001] This utility model belongs to the field of valve stem technology, specifically relating to a gate valve stem with a protection mechanism. Background Technology

[0002] The valve stem is an important component of a valve. It connects to the actuator or handle at the top and directly drives the valve core to move or rotate at the bottom, so as to realize the valve opening and closing or regulation. In the process of opening and closing a gate valve, the valve stem is not only a moving part and a force-bearing part, but also a sealing part.

[0003] Chinese Patent Application No. 202420350644.2 discloses a gate valve stem with an external protective structure. This gate valve stem includes a stem body with an external thread on its arc-shaped surface and an annular groove on the same surface. A sealing element is engaged within the annular groove. A protective device is provided at one end of the stem body, including an embedded groove. A protective sleeve is fitted onto one end of the stem body, and a lead screw is fixedly connected to one end of the protective sleeve. An embedded block and a reinforcing block are fixedly connected to the top of the inner wall of the protective sleeve, and a fixing block is fixedly connected to one end of the lead screw. The embedded block, fixedly connected to the top of the inner wall of the protective sleeve, is installed inside the embedded groove. When the protective sleeve rotates, it can drive the stem body to rotate together, effectively preventing damage to the stem body caused by rainwater and environmental factors.

[0004] The aforementioned patents have the following drawbacks when in use: the protective cover is difficult to install, time-consuming and laborious, causing inconvenience; and when the valve handle is damaged, the valve can be closed by turning the fixing block with a wrench, thus limiting its use. Utility Model Content

[0005] To address the problems mentioned in the background section, this utility model provides a gate valve stem with a protective mechanism, featuring convenient installation and removal of the protective sleeve and easy valve closure.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a gate valve stem with a protection mechanism, comprising a valve stem body, a protective sleeve provided on the upper surface of the valve stem body, fixing components provided on both sides of the protective sleeve, pin holes provided on both sides of the valve stem body, an external thread provided on the lower surface of the valve stem body, a lead screw provided at the upper end of the protective sleeve, and a fixing block provided at the upper end of the lead screw.

[0007] Preferably, the fixing component includes a limiting mechanism, a sleeve, a limiting block, a return spring, a limiting ring, and a fixing pin. The fixing pin is slidably connected to the middle of the sleeve. A limiting block is provided at the end of the fixing pin away from the protective sleeve. A limiting ring is provided at the end of the fixing pin close to the protective sleeve. A return spring is nested on the surface of the fixing pin between the limiting ring and the inner wall of the sleeve. A limiting mechanism is provided on the outer side of the sleeve.

[0008] Preferably, the sleeve and the protective sleeve are connected by a threaded engagement, and the fixing pin is always inserted into the pin hole under the elastic force of the return spring.

[0009] Preferably, the limiting mechanism includes a locking block, a limiting rod, a first limiting groove, and a second limiting groove. The locking block is connected to the side of the limiting rod, the first limiting groove is provided on one end of the sleeve surface near the limiting block, and the second limiting groove is provided on the other end of the sleeve surface.

[0010] Preferably, the protective sleeve has storage slots on both sides, and a rotating rod is rotatably connected to the middle shaft pin of the storage slot.

[0011] Preferably, damping rubber pads are provided on both sides of the rotating rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model is equipped with a fixing component. Pulling the limiting block causes the fixing pin to retract into the sleeve, the return spring is compressed, and the protective sleeve is placed on the surface of the valve stem body. When the limiting block is released, the fixing pin moves back under the elastic force of the return spring and inserts into the pin hole, so that the protective sleeve is quickly fixed. The locking block is locked into the second limiting groove, and the limiting rod abuts against the side of the limiting block, so that the limiting block cannot move, ensuring that the fixing pin will not come out of the pin hole and ensuring that the protective sleeve is securely fixed.

[0014] 2. This utility model is equipped with a rotating rod. The rotating rod is opened by rotating it from the storage slot, so that the rotating rod rotates 90 degrees. By holding the rotating rod and rotating it, the rotating rod drives the protective sleeve to rotate, which in turn makes the valve stem body rotate. The valve stem body can be rotated without a wrench, making adjustment and use convenient. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the fixing component structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the limiting mechanism structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the rotating rod structure of this utility model;

[0019] In the diagram: 1. Fixing block; 2. Lead screw; 3. Protective sleeve; 4. Fixing assembly; 41. Limiting mechanism; 411. Locking block; 412. Limiting rod; 413. Limiting groove one; 414. Limiting groove two; 42. Sleeve; 43. Limiting block; 44. Return spring; 45. Limiting ring; 46. Fixing pin; 5. Pin hole; 6. Valve stem body; 7. External thread; 8. Rotating rod; 9. Receiving groove; 10. Damping rubber pad. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0021] Please see Figure 1-4 The present invention provides the following technical solution: a gate valve stem with a protection mechanism, comprising a valve stem body 6, a protective sleeve 3 provided on the upper surface of the valve stem body 6, fixing components 4 provided on both sides of the protective sleeve 3, pin holes 5 provided on both sides of the valve stem body 6, an external thread 7 provided on the lower surface of the valve stem body 6, a lead screw 2 provided on the upper end of the protective sleeve 3, and a fixing block 1 provided on the upper end of the lead screw 2.

[0022] Specifically, the fixing component 4 includes a limiting mechanism 41, a sleeve 42, a limiting block 43, a return spring 44, a limiting ring 45, and a fixing pin 46. The fixing pin 46 is slidably connected in the middle of the sleeve 42. The end of the fixing pin 46 away from the protective sleeve 3 is provided with a limiting block 43. The end of the fixing pin 46 near the protective sleeve 3 is provided with a limiting ring 45. The surface of the fixing pin 46 between the limiting ring 45 and the inner wall of the sleeve 42 is nested with a return spring 44. The limiting mechanism 41 is provided on the outer side of the sleeve 42.

[0023] By adopting the above technical solution, pulling the limiting block 43 causes the fixing pin 46 to retract into the sleeve 42, the return spring 44 is compressed, the protective sleeve 3 is fitted onto the surface of the valve stem body 6, the limiting block 43 is released, the fixing pin 46 moves back under the elastic force of the return spring 44, the fixing pin 46 is inserted into the pin hole 5, and the protective sleeve 3 is quickly fixed.

[0024] Specifically, the sleeve 42 and the protective sleeve 3 are connected by threaded engagement, and the fixing pin 46 is always inserted into the pin hole 5 under the elastic force of the return spring 44.

[0025] By adopting the above technical solution, the fixing pin 46 moves back under the elastic force of the return spring 44, and the fixing pin 46 is inserted into the pin hole 5, so that the protective sleeve 3 is quickly fixed.

[0026] Specifically, the limiting mechanism 41 includes a locking block 411, a limiting rod 412, a first limiting groove 413, and a second limiting groove 414. The locking block 411 is connected to the side of the limiting rod 412. The surface of the sleeve 42 is provided with a first limiting groove 413 at one end near the limiting block 43, and the other end of the surface of the sleeve 42 is provided with a second limiting groove 414.

[0027] By adopting the above technical solution, the locking block 411 is inserted into the limiting groove 414, and the limiting rod 412 abuts against the side of the limiting block 43, so that the limiting block 43 cannot move, ensuring that the fixing pin 46 will not come out of the pin hole 5, and ensuring that the protective sleeve 3 is securely fixed.

[0028] In this embodiment, when the limiting block 43 is pulled, the fixing pin 46 is retracted into the sleeve 42, the return spring 44 is compressed, and the protective sleeve 3 is placed on the surface of the valve stem body 6. When the limiting block 43 is released, the fixing pin 46 moves back under the elastic force of the return spring 44 and inserts into the pin hole 5, so that the protective sleeve 3 is quickly fixed. The locking block 411 is locked into the limiting groove 414, and the limiting rod 412 abuts against the side of the limiting block 43, so that the limiting block 43 cannot move, ensuring that the fixing pin 46 will not come out of the pin hole 5, ensuring that the protective sleeve 3 is firmly fixed. The protective sleeve 3 improves the protection of the valve stem and facilitates long-term use. Example 2

[0029] The difference between this embodiment and embodiment 1 is that: storage slots 9 are provided on both sides of the protective sleeve 3, and a rotating rod 8 is rotatably connected to the middle shaft pin of the storage slot 9.

[0030] By adopting the above technical solution, the rotating rod 8 can be rotated open from the storage slot 9, causing the rotating rod 8 to rotate 90 degrees. By holding the rotating rod 8 and rotating it, the rotating rod 8 drives the protective sleeve 3 to rotate, which in turn causes the valve stem body 6 to rotate. The valve stem body 6 can be rotated without a wrench, making adjustment and use convenient.

[0031] Specifically, damping rubber pads 10 are provided on both sides of the rotating rod 8.

[0032] By adopting the above technical solution, it is ensured that the rotating rod 8 will not easily unfold when it is retracted into the storage slot 9.

[0033] In this embodiment, the rotating rod 8 is opened by rotating it from the storage slot 9, so that the rotating rod 8 rotates 90 degrees. The rotating rod 8 is rotated by hand, and the rotating rod 8 drives the protective sleeve 3 to rotate, which in turn makes the valve stem body 6 rotate. The valve stem body 6 can be rotated without a wrench, making adjustment and use convenient.

[0034] The working principle and usage process of this utility model are as follows: When using this utility model, pull the limiting block 43 to retract the fixing pin 46 into the sleeve 42, compress the return spring 44, and put the protective sleeve 3 on the surface of the valve stem body 6. Release the limiting block 43, and the fixing pin 46 moves back under the elastic force of the return spring 44. The fixing pin 46 is inserted into the pin hole 5, so that the protective sleeve 3 is quickly fixed. The locking block 411 is locked into the limiting groove 414, and the limiting rod 412 abuts against the side of the limiting block 43, so that the limiting block 43 cannot move, ensuring that the fixing pin 46 will not come out of the pin hole 5, and ensuring that the protective sleeve 3 is firmly fixed. The protective sleeve 3 improves the protection of the valve stem and facilitates long-term use. Rotate the rotating rod 8 from the storage groove 9 to open it, so that the rotating rod 8 rotates 90 degrees. By holding the rotating rod 8, the rotating rod 8 drives the protective sleeve 3 to rotate, which in turn makes the valve stem body 6 rotate. The valve stem body 6 can be rotated without a wrench, making adjustment and use convenient.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gate valve stem with a protection mechanism, comprising a stem body (6), characterized in that: The upper surface of the valve stem body (6) is provided with a protective sleeve (3), the two sides of the protective sleeve (3) are provided with fixing components (4), the two sides of the valve stem body (6) are provided with pin holes (5), the lower surface of the valve stem body (6) is provided with external threads (7), the upper end of the protective sleeve (3) is provided with a screw (2), and the upper end of the screw (2) is provided with a fixing block (1).

2. The valve stem of a gate valve with a protection mechanism according to claim 1, characterized in that: The fixing component (4) includes a limiting mechanism (41), a sleeve (42), a limiting block (43), a return spring (44), a limiting ring (45), and a fixing pin (46). The fixing pin (46) is slidably connected in the middle of the sleeve (42). A limiting block (43) is provided at the end of the fixing pin (46) away from the protective sleeve (3). A limiting ring (45) is provided at the end of the fixing pin (46) close to the protective sleeve (3). A return spring (44) is nested on the surface of the fixing pin (46) between the limiting ring (45) and the inner wall of the sleeve (42). A limiting mechanism (41) is provided on the outer side of the sleeve (42).

3. The valve stem of a gate valve with a protection mechanism according to claim 2, characterized in that: The sleeve (42) and the protective sleeve (3) are connected by threaded engagement, and the fixing pin (46) is always inserted into the pin hole (5) under the elastic force of the return spring (44).

4. The valve stem of a gate valve with a protection mechanism according to claim 2, characterized in that: The limiting mechanism (41) includes a locking block (411), a limiting rod (412), a first limiting groove (413), and a second limiting groove (414). The side of the locking block (411) is connected to the limiting rod (412). The surface of the sleeve (42) near the end of the limiting block (43) is provided with a first limiting groove (413), and the other end of the surface of the sleeve (42) is provided with a second limiting groove (414).

5. The valve stem of a gate valve with a protection mechanism according to claim 1, characterized in that: The protective sleeve (3) has storage slots (9) on both sides, and a rotating rod (8) is rotatably connected to the middle shaft pin of the storage slot (9).

6. The valve stem of a gate valve with a protection mechanism according to claim 5, characterized in that: Damping rubber pads (10) are provided on both sides of the rotating rod (8).

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