Valve shaft

Abstract

The utility model discloses a valve shaft and relates to the field of valve accessories, the valve shaft comprises a valve body, a driving part is arranged at the top of the valve body, a connecting mechanism is arranged at the bottom of the valve body, and through the structural arrangement, the valve shaft can drive a rack to horizontally move by rotating a lead screw, so that a gear ring is driven to rotate through the rack; the gear ring rotates to drive the sliding circular shaft to slide, the sliding circular shaft drives the clamping piece to clamp towards the center so as to drive the clamping piece to clamp towards the middle part, so that the connecting part is wrapped laterally in a surrounding manner, and compared with stacked pressing, the air tightness and the sealing performance of the connecting part are higher through the connecting mechanism, the safety performance is higher, and the service life of the connecting part is prolonged. And the practicability is more perfect.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of valve accessories, in particular to a valve shaft. BACKGROUND

[0002] The valve shaft is mainly used to drive the opening and closing of the valve, so as to control the flow state inside the pipeline.

[0003] As shown in Chinese patent publication No. CN221629000U, a valve shaft sealing assembly still has the following shortcomings in actual use:

[0004] The valve shaft of the above-mentioned patent is connected and sealed by vertical stacking and pressing through flanges and threads in actual use. This way still has gaps in the horizontal part. In actual use, the gas and liquid in the valve are in a high-pressure state. Such tight gaps will be gradually damaged by the impact of high-pressure gas and liquid. In addition, the bottom and top plate surfaces are difficult to be uniformly stressed when the threads are tightened manually due to different rotation degrees, thereby affecting the subsequent continuous use. UTILITY MODEL CONTENT

[0005] In order to improve the problem of horizontal gap in longitudinal clamping, the present application provides a valve shaft.

[0006] The valve shaft provided by the present application adopts the following technical scheme:

[0007] A valve shaft, comprising a valve body, wherein the top of the valve body is provided with a driving member, and the bottom of the valve body is provided with a connecting mechanism.

[0008] The connecting mechanism comprises a housing provided at the bottom of the valve body, a lead screw is arranged inside the housing, a rack is movably arranged on the side wall of the lead screw, a gear ring is arranged on one side of the rack, a sliding circular shaft is slidably arranged on the inner wall of the gear ring, a clamping member is arranged on the inner side of the gear ring, an auxiliary gear is arranged on the side wall of the gear ring, and a threaded rod is movably arranged on the top of the auxiliary gear.

[0009] By adopting the above technical scheme, the threaded rod is centrally symmetrically provided with a plurality of threaded rods, so that the connection between the bottom plate and the connection position is more tight.

[0010] Preferably, the connecting mechanism further comprises a top cover fixedly connected to the bottom of the valve body, the shell is fixedly connected to the bottom of the top cover, the bottom of the shell is fixedly connected with a bottom plate, the sidewall of the bottom plate is provided with a driving hole, the screw rod is movably arranged through the driving hole, the top of the bottom plate is fixedly connected with a support plate movably arranged through the sidewall of the screw rod, the screw rod is threadedly arranged through the sidewall of the rack, the top of the rack is fixedly connected with a limiting block, the limiting blocks on the two sides are fixedly connected with limiting members on the bottom, and the top of the bottom plate is fixedly connected with a support cylinder abutting against the bottom of the auxiliary gear.

[0011] By adopting the technical scheme, the limiting block is T-shaped, so that the limiting members limit the limiting block, and the rack can only move horizontally and cannot rotate.

[0012] Preferably, the sidewall of the rack is in meshing connection with the sidewall of the gear ring, one limiting ring is fixedly connected to the top of the bottom plate, and the other limiting ring is fixedly connected to the bottom of the top cover.

[0013] By adopting the technical scheme, the limiting rings are located at the same vertical position, so that the structure connection is facilitated.

[0014] Preferably, the inner wall of the limiting ring is slidably connected with a support ring fixedly connected to the upper and lower sides of the gear ring, and the sliding shaft is movably arranged through the gear ring.

[0015] By adopting the technical scheme, the outer diameter of the support ring is consistent with the inner diameter of the limiting ring, so that the connection is more stable.

[0016] Preferably, one limiting disc is fixedly connected to the top of the bottom plate, the other limiting disc is fixedly connected to the top of the top cover, and the top and the bottom of the sliding shaft are fixedly connected with sliding rods.

[0017] By adopting the technical scheme, the limiting disc is located at the vertical position, so that the movement of the sliding rods is kept synchronous.

[0018] Preferably, the sliding rods are slidably connected to the side of the limiting disc close to the gear ring, and the end of the sliding rod away from the sliding shaft is fixedly connected with a clamping member.

[0019] By adopting the technical scheme, the clamping member is centrally symmetrically arranged, so that the clamping member uniformly and stably wraps the outer wall of the middle connecting pipeline.

[0020] Preferably, the sidewall of the auxiliary gear is in meshing connection with the sidewall of the gear ring.

[0021] By adopting the technical scheme, the size of the outer wall of the rotating cylinder is consistent with the size of the inner wall of the support cylinder, so that the connection is more stable.

[0022] Preferably, the bottom of the auxiliary gear is fixedly connected to a rotating cylinder that fits the inner wall of the supporting cylinder, the threaded rod threads through the auxiliary gear and the rotating cylinder, and the threaded rod movably passes through the bottom plate.

[0023] By adopting the above technical solution, the position of the hole opened in the bottom plate is consistent with the inner diameter of the rotating cylinder, so that the movement limit of the threaded rod is more consistent.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. The rotating screw drives the rack to move horizontally, which in turn drives the gear ring to rotate through the rack. The rotation of the gear ring drives the sliding shaft to slide, which drives the clamping piece to clamp toward the center, thereby driving the clamping piece to clamp toward the middle, thereby wrapping the connection part in an enveloping lateral direction. Compared with superimposed compression, the connection mechanism can make the airtightness and sealing of the connection stronger, the safety performance is higher, and the practicality is more perfect;

[0026] 2. The rotation of the gear ring drives the auxiliary gear to rotate, thereby driving the threaded rod to move vertically, so that multiple threaded rods move vertically downward synchronously, so that multiple connecting parts are connected at the same time, making the force more uniform and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a diagram showing the overall structure of the valve shaft in this application;

[0028] Figure 2 This is an overall diagram showing the internal structure of the valve shaft of this application;

[0029] Figure 3 This is a partial view of the valve shaft rack in this application;

[0030] Figure 4 A partial display diagram of the valve shaft limit block for this application is provided;

[0031] Figure 5 This is a partial cross-sectional view of the gear ring of the valve shaft in this application;

[0032] Figure 6 This is a partial view of the sliding rod of the valve shaft of this application;

[0033] Figure 7 This is a cross-sectional view of the valve shaft gear ring from another perspective of this application;

[0034] Figure 8 This is a partial view of the threaded rod of the valve shaft in this application.

[0035] Reference numerals:

[0036] 1. Valve body; 11. Driving parts;

[0037] 2, connecting mechanism; 21, top cover; 22, shell; 23, bottom plate; 24, driving hole; 25, support plate; 26, screw rod; 27, rack; 28, limiting block; 29, limiting piece; 210, limiting ring; 211, support ring; 212, gear ring; 213, sliding circular shaft; 214, sliding rod;

[0038] 215, limiting disc; 216, clamping piece; 217, auxiliary gear; 218, support cylinder; 219, rotating cylinder; 220, threaded rod. DETAILED DESCRIPTION

[0039] The following will be described in detail in combination with the accompanying drawings. Figures 1-8 The application is further described in detail.

[0040] The application discloses a valve shaft.

[0041] Referring to Figure 1 A valve shaft comprises a valve body 1, a driving piece 11 arranged on the top of the valve body 1, and a connecting mechanism 2 arranged on the bottom of the valve body 1.

[0042] The worker aligns the bottom of the bottom plate 23 with the installation position, aligns the pipe opening with the center of the top of the bottom plate 23, and then presses downward, so that the pipe is inserted into the installation hole on the top of the bottom plate 23, and the threaded hole of the installation position is aligned with the center of the threaded rod 220.

[0043] Referring to Figure 2 , Figure 3The connecting mechanism 2 comprises a shell 22 arranged at the bottom of the valve body 1, a lead screw 26 arranged in the shell 22, a rack 27 movably arranged at the side wall of the lead screw 26, a gear ring 212 arranged at one side of the rack 27, a sliding round shaft 213 slidably arranged at the inner wall of the gear ring 212, a clamping piece 216 arranged at the inner side of the gear ring 212, an auxiliary gear 217 arranged at the side wall of the gear ring 212, a threaded rod 220 movably arranged at the top of the auxiliary gear 217, and the connecting mechanism 2 further comprises a top cover 21 fixedly connected to the bottom of the valve body 1, the top of the shell 22 is fixedly connected to the bottom of the top cover 21, and a bottom plate 23 is fixedly connected to the bottom of the shell 22, so that the top cover 21, the shell 22 and the bottom plate 23 form an integrated mounting part, a driving hole 24 is formed through the side wall of the bottom plate 23, the diameter of the lead screw 26 is consistent with the size of the driving hole 24, so that the bottom plate 23 movably penetrates the driving hole 24, a cross slot is formed at the side of the bottom plate 23 close to the driving hole 24, which facilitates the rotation of the lead screw 26 by the cross screw, the top of the bottom plate 23 is fixedly connected to the bottom of a supporting plate 25, a circular hole one is formed through the side wall of the supporting plate 25, the side wall of the lead screw 26 movably penetrates the circular hole one, so that the supporting plate 25 is rotationally connected with the lead screw 26, a threaded hole one is formed through the side wall of the rack 27, so that the rack 27 is threadedly connected with the lead screw 26, so that the lead screw 26 rotates to drive the horizontal movement of the rack 27, a limiting block 28 is fixedly connected to the top of the rack 27, the limiting blocks 28 are in contact with the limiting pieces 29 at the bottom of both sides, one end of the limiting pieces 29 close to the supporting plate 25 is fixedly connected to the side wall of the supporting plate 25, the teeth on the side wall of the rack 27 are meshingly connected with the teeth on the side wall of the gear ring 212, so that the gear ring 212 rotates when the rack 27 moves horizontally.

[0044] Then the staff holds a cross screwdriver, aligns the screwdriver with the cross slot on the side of the lead screw 26 close to the driving hole 24, and then rotates the lead screw 26 through the screwdriver.

[0045] Referring to Figure 4 , Figure 5The other limiting ring 210 is fixedly connected to the bottom of the top cover 21, so that the two limiting rings 210 are fixed respectively, and the inner wall of the limiting ring 210 is in sliding connection with the supporting ring 211; the supporting ring 211 is fixedly connected to the upper and lower sides of the gear ring 212, so that the gear ring 212 is limited by the limiting ring 210 through the supporting ring 211, and the gear ring 212 and the gear rack 27 are kept in a stable meshing connection state; an arc-shaped through slot is formed in the top of the gear ring 212; the sliding circular shaft 213 is movably penetrated through the arc-shaped through slot, so that the sliding circular shaft 213 is in sliding connection with the gear ring 212; when the gear ring 212 rotates, the sliding circular shaft 213 slides in the arc-shaped sliding slot; one limiting disc 215 is fixedly connected to the top of the bottom plate 23, and the other limiting disc 215 is fixedly connected to the top of the top cover 21; a non-through sliding slot is formed in the side of the limiting disc 215 close to the gear ring 212; the sliding rods 214 are fixedly connected to the top and bottom of the sliding circular shaft 213, and the sliding rods 214 are in sliding connection with the non-through sliding slot, so that the sliding rods 214 can slide in the non-through sliding slot under the drive of the sliding circular shaft 213.

[0046] When the screw rod 26 rotates, the gear rack 27 moves horizontally, the gear rack 27 drives the gear ring 212 to rotate, the gear ring 212 drives the sliding circular shaft 213 to slide in the arc-shaped sliding slot, the sliding circular shaft 213 drives the sliding rods 214 to move the clamping part 216 on one side horizontally, the sliding rods 214 drive the clamping part 216 to move synchronously, so as to drive the clamping part 216 to adhere to the connection, thereby keeping the sealing property of the valve shaft connection.

[0047] With reference to Figure 6 , Figure 7 , Figure 8 The clamping part 216 is fixedly connected to the end of the sliding rod 214 away from the sliding circular shaft 213, so that the sliding rod 214 can drive the clamping part 216 to move synchronously; the side wall teeth of the auxiliary gear 217 are in meshing connection with the side wall teeth of the gear ring 212, so that the gear ring 212 can drive the auxiliary gear 217 to rotate synchronously when the gear ring 212 rotates; the top of the bottom plate 23 is fixedly connected with the bottom of the supporting cylinder 218; the top of the supporting cylinder 218 is in adhesion with the bottom of the auxiliary gear 217, so that the supporting cylinder 218 limits the vertical movement of the auxiliary gear 217; the bottom of the auxiliary gear 217 is fixedly connected with the top of the rotating cylinder 219; the outer wall of the rotating cylinder 219 is in adhesion with the inner wall of the supporting cylinder 218, so that the rotating cylinder 219 limits the supporting cylinder 218; a threaded hole two is formed in the top of the auxiliary gear 217; a threaded hole three is formed in the top of the rotating cylinder 219; a threaded hole four is formed in the bottom of the bottom plate 23; and the threaded rod 220 is sequentially penetrated through the threaded hole two, the threaded hole three and the threaded hole four, so that the threaded rod 220 moves vertically when the auxiliary gear 217 rotates.

[0048] Subsequently, while the gear ring 212 rotates, the gear ring 212 will drive the auxiliary gear 217 to rotate, the auxiliary gear 217 will drive the rotating cylinder 219 to rotate, and the auxiliary gear 217 will also drive the threaded rod 220 to move vertically by rotating, and the threaded rod 220 will move vertically downward, so that the threaded rod 220 is screwed with the threaded hole in the mounting position, so that the bottom plate 23 is further connected with the mounting position, so that the connection is more closely, and the tightness of the installation is consistent.

[0049] Among them, the valve body 1 and the driving part 11 belong to the prior art, and the structure principle will not be described in detail, which also includes a connecting pipe, a mounting support and the like, which is not the main technology, so it will not be described in detail.

[0050] The implementation principle of the valve shaft of the embodiment of the present application is:

[0051] Subsequently, the staff holds a cross-shaped screwdriver, rotates the lead screw 26 through the screwdriver, and the lead screw 26 will drive the rack 27 to move horizontally when rotating, the rack 27 will drive the sliding shaft 213 to slide in the arc-shaped sliding groove, the sliding shaft 213 will drive the clamping part 216 to fit the connection, and then the gear ring 212 will drive the auxiliary gear 217 to rotate while rotating, the auxiliary gear 217 will drive the rotating cylinder 219 to rotate, and the auxiliary gear 217 will also drive the threaded rod 220 to move vertically downward by rotating, so that the threaded rod 220 is screwed with the threaded hole in the mounting position, so that the bottom plate 23 is further connected with the mounting position.

[0052] The above is only an optional embodiment of the present disclosure, and is not used to limit the present disclosure. For those skilled in the art, the present disclosure can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A valve shaft comprising a valve body (1) provided at the top with a drive member (11), characterized in that: The bottom of the valve body (1) is provided with a connecting mechanism (2); The connecting mechanism (2) further comprises a top cover (21) fixedly connected to the bottom of the valve body (1), the shell (22) is fixedly connected to the bottom of the top cover (21), the bottom of the shell (22) is fixedly connected with a bottom plate (23), the side wall of the bottom plate (23) is throughly provided with a driving hole (24), the screw rod (26) is movably through the driving hole (24), the top of the bottom plate (23) is fixedly connected with a supporting plate (25) movably through the side wall of the screw rod (26), the screw rod (26) is screwedly through the side wall of the rack (27), the top of the rack (27) is fixedly connected with a limiting block (28), the bottom of the limiting block (28) on both sides is attached with a limiting piece (29) fixedly connected with the side wall of the supporting plate (25), the top of the bottom plate (23) is fixedly connected with a supporting cylinder (218) attached with the bottom of the auxiliary gear (217).

2. A valve shaft according to claim 1, wherein: The side wall of the rack (27) is meshedly connected with the side wall of the gear ring (212), one limiting ring (210) is fixedly connected to the top of the bottom plate (23), and the other limiting ring (210) is fixedly connected to the bottom of the top cover (21).

3. A valve shaft according to claim 2, wherein: The inner wall of the limiting ring (210) is slidably connected with a supporting ring (211) fixedly connected to the upper and lower sides of the gear ring (212), and the sliding shaft (213) movably penetrates the gear ring (212).

4. A valve shaft according to claim 3, wherein: The top and bottom of the sliding shaft (213) are fixedly connected with a sliding rod (214), and the sliding rod (214) is slidably connected to one side of the limiting disc (215) close to the gear ring (212).

5. A valve shaft according to claim 4, wherein: The end of the sliding rod (214) away from the sliding shaft (213) is fixedly connected with a clamping piece (216).

6. A valve shaft according to claim 5, wherein: The side wall of the auxiliary gear (217) is meshedly connected with the side wall of the gear ring (212).

7. A valve shaft as defined in claim 1, wherein: The bottom of the auxiliary gear (217) is fixedly connected with a rotating cylinder (219) attached to the inner wall of the supporting cylinder (218), the threaded rod (220) is screwedly through the auxiliary gear (217) and the rotating cylinder (219), and the threaded rod (220) movably penetrates the bottom plate (23).

8. A valve shaft according to claim 1, wherein: ​

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