Valve rod extension rod assembly

Abstract

The utility model relates to the technical field of valve rods, and discloses a valve rod extension rod assembly which is characterized in that a first sliding groove is formed in one side in a protection block, a second sliding groove is formed in the other side in the protection block, and the side, away from a first rack, of a first sliding block is connected into the first sliding groove in a sliding mode; the side, away from the second rack, of the second sliding block is slidably connected into the second sliding groove. According to the utility model, by rotating the knob, the gear rotates, so that the rack II drives the sliding block II to move along the sliding chute II, the rack II moves to drive the connecting block I to move, the connecting block drives the valve rod II to move towards the outer side along the sliding chute III, and the valve rod II moves towards the outer side along the groove II; the first valve rod and the second valve rod move outwards, so that the overall length can be increased, the situation that the using effect is affected due to the fact that the lengths of the first valve rod and the second valve rod are inconvenient to adjust is avoided, the first valve rod and the second valve rod can be adjusted according to different lengths, and therefore the first valve rod and the second valve rod are higher in flexibility during application.

Description

Technical Field

[0001] The utility model relates to the technical field of valve stems, in particular to a valve stem extension rod assembly. Background Art

[0002] The valve stem is an important component of the valve, mainly used for transmission. It is connected to the actuator or handle on the top and directly drives the valve core to move or rotate on the bottom to realize the opening or closing or regulating function of the valve. The valve stem belongs to the shaft part. The material of the valve stem is usually selected from copper alloy, carbon steel, stainless steel, etc. to ensure that it has sufficient strength, good impact toughness, abrasion resistance and corrosion resistance at the specified temperature.

[0003] The prior art has the following shortcomings: most of the traditional valve stems are integral, which makes it difficult to adjust the length of the valve stem, so that the valve stem cannot be adjusted according to the required length. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a valve stem extension rod assembly.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a valve stem extension rod assembly, comprising a protective block and an extension mechanism, wherein one side of the protective block is rotatably connected to a rotating shaft, one side of the rotating shaft is fixedly connected to a knob, and the other side of the rotating shaft is fixedly connected to a gear, one side of the gear is meshedly connected to a rack 1, a sliding block 1 is fixedly connected to the rack 1, a side of the rack 1 away from the sliding block 1 is fixedly connected to a connecting block 2, the other side of the gear is meshedly connected to a rack 2, a sliding block 2 is fixedly connected to the rack 2, and a side of the rack 2 away from the sliding block 2 is fixedly connected to the connecting block 1, a sliding groove 1 is provided on one side of the protective block, and a sliding groove 2 is provided on the other side of the protective block, a side of the sliding block 1 away from the rack 1 is slidably connected to the sliding groove 1, and a side of the sliding block 2 away from the rack 2 is slidably connected to the sliding groove 2.

[0006] As a further description of the above technical solution:

[0007] The rack 1, rack 2, sliding block 1, sliding block 2, gear, connecting block 1, connecting block 2, slide groove 1, and slide groove 2 are all arranged in the protective block, the sliding block 1 and sliding block 2 are arranged in parallel, and the rack 1 and rack 2 are respectively arranged on both sides of the gear.

[0008] As a further description of the above technical solution:

[0009] The extension mechanism comprises a knob, a rotating shaft, a rack 1, a rack 2, a sliding block 1, a sliding block 2, a gear, a connecting block 1, a connecting block 2, a sliding groove 1, and a sliding groove 2.

[0010] As a further description of the above technical solution:

[0011] One side of the protection block is provided with a groove 1, and the other side of the protection block is provided with a groove 2.

[0012] As a further description of the above technical solution:

[0013] The side of the sliding block 1 away from the rack 1 is fixedly connected to the valve stem 1, the protection block is slidably connected to the valve stem 2, the valve stem 1 is provided with a sliding groove 3, the sliding block 2 is slidably connected in the sliding groove 3, and the valve stem 2 is fixedly connected to the sliding block 2.

[0014] As a further description of the above technical solution:

[0015] The valve stem 1 is slidably connected in the groove 1, and the valve stem 2 is slidably connected in the groove 2.

[0016] As a further description of the above technical solution:

[0017] A connecting plate is fixedly connected to one side of the valve stem 2, and a mounting hole is arranged on the connecting plate. There are four mounting holes arranged around the connecting plate.

[0018] As a further description of the above technical solution:

[0019] A threaded block is fixedly connected to one side of the valve stem 1 away from the valve stem 2, and a screw rod is internally threadedly connected to the threaded block.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, by turning the knob, the gear is rotated so that the rack 2 brings the sliding block 2 to move along the sliding groove 2, the rack 2 moves and brings the connecting block 1 to move, the connecting block 1 brings the valve stem 2 to move outward along the sliding groove 3, the valve stem 2 moves outward along the groove 2, the valve stem 1 and the valve stem 2 move outward so that the overall length can be increased, avoiding the inconvenience of adjusting the length of the valve stem 1 and the valve stem 2 and affecting the use effect, and enabling the valve stem 1 and the valve stem 2 to be adjusted according to different lengths, so that the valve stem 1 and the valve stem 2 are more flexible when used. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a three-dimensional structural schematic diagram of a valve stem extension rod assembly proposed by the utility model;

[0023] Figure 2 A schematic diagram of the cross-sectional structure of a valve stem extension rod assembly proposed in the utility model Figure 1 ;

[0024] Figure 3A schematic diagram of the cross-sectional structure of a valve stem extension rod assembly proposed in the utility model Figure 2 ;

[0025] Figure 4 This is a schematic diagram of the disassembly of components of a valve stem extension rod assembly proposed by the utility model;

[0026] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0027] Legend:

[0028] 1. Protective block; 2. Knob; 3. Rotating shaft; 4. Rack 1; 5. Rack 2; 6. Sliding block 1; 7. Sliding block 2; 8. Gear; 9. Connecting block 1; 10. Connecting block 2; 11. Slide 1; 12. Slide 2; 13. Groove 1; 14. Groove 2; 15. Valve stem 1; 16. Valve stem 2; 17. Slide 3; 18. Connecting plate; 19. Mounting hole; 20. Threaded block; 21. Screw. DETAILED DESCRIPTION

[0029] 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.

[0030] Reference Figure 1-Figure 5The utility model provides an embodiment: a valve stem extension rod assembly, a protection block 1, an extension mechanism, a rotation connection of the protection block 1 with a rotating shaft 3, a knob 2 is fixedly connected to one side of the rotating shaft 3, a gear 8 is fixedly connected to the other side of the rotating shaft 3, a rack 4 is meshedly connected to one side of the gear 8, a sliding block 6 is fixedly connected to the rack 4, a connecting block 2 is fixedly connected to the side of the rack 4 away from the sliding block 6, a rack 2 is meshedly connected to the other side of the gear 8, a sliding block 27 is fixedly connected to the rack 25, and a sliding block 27 is fixedly connected to the side of the rack 25 away from the sliding block 27. A connecting block 9 is fixedly connected, a slide groove 11 is provided on one side of the protective block 1, and a slide groove 2 12 is provided on the other side of the protective block 1. The side of the sliding block 6 away from the rack 4 is slidably connected in the slide groove 11, and the side of the sliding block 27 away from the rack 25 is slidably connected in the slide groove 2 12. The rack 14, the rack 25, the sliding block 16, the sliding block 27, the gear 8, the connecting block 19, the connecting block 210, the slide groove 11, and the slide groove 2 12 are all arranged in the protective block 1, the sliding block 6 and the sliding block 27 are arranged in parallel, and the rack 14 and the rack 25 are respectively arranged on the gear 8. On both sides, the extension mechanism includes a knob 2, a rotating shaft 3, a rack 14, a rack 25, a sliding block 16, a sliding block 27, a gear 8, a connecting block 19, a connecting block 210, a slide 11, and a slide 212. By rotating the knob 2, the knob 2 rotates with the rotating shaft 3, the rotating shaft 3 rotates with the gear 8, the gear 8 rotates to make the rack 14 move with the sliding block 16 along the slide 11, the rack 14 moves with the connecting block 210, the connecting block 210 moves the valve stem 15 outward, the valve stem 15 moves to one side along the groove 13, and the gear 8 rotates. The rack 25 moves with the sliding block 27 along the sliding groove 2 12, the rack 25 moves with the connecting block 19, the connecting block 19 moves with the valve stem 2 16 along the sliding groove 3 17 outward, the valve stem 2 16 moves outward along the groove 2 14, the valve stem 1 15 and the valve stem 2 16 move outward so that the overall length can be increased, avoiding the valve stem 1 15 and the valve stem 2 16 being inconvenient to adjust the length and affecting the use effect, and the valve stem 1 15 and the valve stem 2 16 can be adjusted according to different lengths, so that the valve stem 1 15 and the valve stem 2 16 are more flexible when used.

[0031] A groove 13 is provided on one side of the protection block 1, a groove 2 14 is provided on the other side of the protection block 1, a valve stem 15 is fixedly connected to the side of the sliding block 6 away from the rack 14, a valve stem 2 16 is slidably connected in the protection block 1, a slide groove 3 17 is provided on the valve stem 15, the sliding block 27 is slidably connected in the slide groove 3 17, the valve stem 2 16 is fixedly connected to the sliding block 27, the valve stem 15 is slidably connected in the groove 13, the valve stem 2 16 is slidably connected in the groove 2 14, and one side of the valve stem 2 16 is fixed A connecting plate 18 is connected, and a mounting hole 19 is provided on the connecting plate 18. There are four mounting holes 19 and they are arranged around the connecting plate 18. A threaded block 20 is fixedly connected to the side of the valve stem 15 away from the valve stem 2 16. A screw rod 21 is connected to the inner thread of the threaded block 20. When the overall length is adjusted, the connecting plate 18 is fixed through the mounting hole 19. When the overall length is adjusted, the connecting plate 18 is fixed through the mounting hole 19. One side of the valve stem 15 is connected through the screw rod 21.

[0032] Working principle: by turning knob 2, knob 2 rotates with shaft 3, shaft 3 rotates with gear 8, gear 8 rotates to make rack 4 move with sliding block 6 along slide groove 11, rack 4 moves with connecting block 2 10, connecting block 2 10 moves valve stem 15 outward, valve stem 15 moves to one side along groove 13, gear 8 rotates to make rack 25 move with sliding block 27 along slide groove 2 12, rack 25 moves with connecting block 19, connecting block 19 moves valve stem 2 16 along slide groove 3 17 moves outward, the valve stem 2 16 moves outward along the groove 2 14, the valve stem 1 15 and the valve stem 2 16 move outward so that the overall length can be increased, so as to avoid the valve stem 15 and the valve stem 2 16 being inconvenient to adjust the length and affecting the use effect, and the valve stem 15 and the valve stem 2 16 can be adjusted according to different lengths, so that the valve stem 15 and the valve stem 2 16 are more flexible in application. When the overall length is adjusted, the connecting plate 18 is fixed through the mounting hole 19, and one side of the valve stem 15 is connected through the screw rod 21.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A valve stem extension rod assembly, characterized in that: The invention comprises a protection block (1) and an extension mechanism, wherein one side of the protection block (1) is rotatably connected to a rotating shaft (3), one side of the rotating shaft (3) is fixedly connected to a knob (2), the other side of the rotating shaft (3) is fixedly connected to a gear (8), one side of the gear (8) is meshingly connected to a rack (4), a sliding block (6) is fixedly connected to the rack (4), a side of the rack (4) away from the sliding block (6) is fixedly connected to a connecting block (10), and the other side of the gear (8) is meshingly connected to a gear (11). The rack gear 2 (5) is fixedly connected to a sliding block 2 (7), the side of the rack gear 2 (5) away from the sliding block 2 (7) is fixedly connected to a connecting block 1 (9), one side of the protection block (1) is provided with a sliding groove 1 (11), the other side of the protection block (1) is provided with a sliding groove 2 (12), the side of the sliding block 1 (6) away from the rack gear 1 (4) is slidably connected to the sliding groove 1 (11), and the side of the sliding block 2 (7) away from the rack gear 2 (5) is slidably connected to the sliding groove 2 (12).

2. A valve stem extension rod assembly according to claim 1, characterized in that: The rack 1 (4), the rack 2 (5), the sliding block 1 (6), the sliding block 2 (7), the gear (8), the connecting block 1 (9), the connecting block 2 (10), the slide groove 1 (11), and the slide groove 2 (12) are all arranged in the protective block (1); the sliding block 1 (6) and the sliding block 2 (7) are arranged in parallel; the rack 1 (4) and the rack 2 (5) are respectively arranged on both sides of the gear (8).

3. The valve stem extension rod assembly according to claim 1, characterized in that: The extension mechanism comprises a knob (2), a rotating shaft (3), a rack 1 (4), a rack 2 (5), a sliding block 1 (6), a sliding block 2 (7), a gear (8), a connecting block 1 (9), a connecting block 2 (10), a sliding groove 1 (11), and a sliding groove 2 (12).

4. The valve stem extension rod assembly according to claim 1, characterized in that: One side of the protection block (1) is provided with a groove one (13), and the other side of the protection block (1) is provided with a groove two (14).

5. The valve stem extension rod assembly according to claim 1, characterized in that: The sliding block 1 (6) is fixedly connected to a valve stem 1 (15) on a side away from the rack 1 (4); the protective block (1) is slidably connected to a valve stem 2 (16); a sliding groove 3 (17) is provided on the valve stem 1 (15); the sliding block 2 (7) is slidably connected to the sliding groove 3 (17); and the valve stem 2 (16) is fixedly connected to the sliding block 2 (7).

6. A valve stem extension rod assembly according to claim 5, characterized in that: The valve stem one (15) is slidably connected in the groove one (13), and the valve stem two (16) is slidably connected in the groove two (14).

7. The valve stem extension rod assembly according to claim 5, characterized in that: A connecting plate (18) is fixedly connected to one side of the valve stem (16), and a mounting hole (19) is provided on the connecting plate (18). Four mounting holes (19) are provided and arranged around the connecting plate (18).

8. The valve stem extension rod assembly according to claim 5, characterized in that: A threaded block (20) is fixedly connected to the side of the valve stem 1 (15) away from the valve stem 2 (16), and a screw rod (21) is internally threadedly connected to the threaded block (20).

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