CN213871140U

CN213871140U - Adjustable connecting rod mechanism on multi-blade valve

Info

Publication number: CN213871140U
Application number: CN202022629984.3U
Authority: CN
Inventors: 于博阳
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2021-08-03
Anticipated expiration: 2030-11-13

Abstract

The utility model discloses a link mechanism, in particular to an adjustable link mechanism on a multi-blade valve, which comprises a pull rod A, a nut A, a connecting sleeve, a nut B, a pull rod B, a driving shaft, a driving spiral arm, a driven spiral arm and a driven shaft, the pull rod A is connected with the connecting sleeve through a nut A, the pull rod B is connected with the connecting sleeve through a nut B, the driving shaft is connected with a driving spiral arm, the driving spiral arm is connected with a pull rod A, the driven spiral arm is connected with a pull rod B, the driven spiral arm is connected with the driven shaft, the utility model avoids the condition that the connecting rod and the spiral arm can not be connected caused by processing error, when the number of shafts of the valve is more, the adjustable connecting rod mechanism is more convenient to use, the assembly efficiency is greatly improved, the rework rate of the valve is reduced, and considerable economic benefits are brought to enterprises.

Description

Adjustable connecting rod mechanism on multi-blade valve

Technical Field

The utility model relates to a link mechanism field specifically is a link mechanism with adjustable on multi-blade valve.

Background

At present, the multi-blade valve usually adopts a transmission mechanism of a plurality of swing arms and a connecting rod to realize the opening and closing of the valve. The traditional connecting rod adopts an overall flat form, and a pin shaft hole is formed in the connecting rod and is connected with the spiral arm through a pin shaft.

The transmission mechanism commonly used for the multi-blade valve at present is shown in fig. 1, wherein a driving shaft 1 rotates to drive a driving spiral arm 2 to rotate, the driving spiral arm 2 drives a connecting rod 3 to move, the connecting rod 3 drives a driven spiral arm 4 to rotate, and finally the driven spiral arm drives a driven shaft 5 to rotate. The connecting rod 3 is in an integral flat form, and pin shaft holes are firstly processed on the connecting rod 3 according to the distances H1 and H2 between the shafts to be connected with the pin shaft 6, the washer 7 and the cotter pin 8.

Because distance L1, L2 between the round pin axle connecting hole of processing is fixed in above-mentioned scheme, distance H1, H2 between the valve shaft appear machining error, or distance L1, L2 in the round pin axle hole on the connecting rod 3 appear machining error, because connecting rod 3 is a whole form, will appear initiative radial arm 2 or from the situation that the round pin axle hole can't be connected between radial arm 4 and the connecting rod 3. Because the distances H1, H2 between the good valve shaft of valve that processes are basically unadjustable, can only reprocess connecting rod 3, influenced production efficiency and increased manufacturing cost, it is very inconvenient. Only 3 axes are shown in fig. 1, which is more likely to occur when multiple axes are used for the valve.

SUMMERY OF THE UTILITY MODEL

The utility model provides a link mechanism with adjustable it is brand-new changes traditional whole flat form connecting rod into the form of circular shape adapter sleeve and pull rod, compensates machining error through adjusting adapter sleeve and pull rod screw-thread fit length for production efficiency.

In order to achieve the above object, the utility model provides a following technical scheme: an adjustable connecting rod mechanism on a multi-blade valve comprises a pull rod A, a nut A, a connecting sleeve, a nut B, a pull rod B, a driving shaft, a driving spiral arm, a driven spiral arm and a driven shaft, wherein the pull rod A is connected with the connecting sleeve through the nut A, the pull rod B is connected with the connecting sleeve through the nut B, the driving shaft is connected with the driving spiral arm, the driving spiral arm is connected with the pull rod A, the driven spiral arm is connected with the pull rod B, and the driven spiral arm is connected with the driven shaft.

Preferably, an external thread A is arranged at one end of the pull rod A, external threads B are arranged at two ends of the pull rod B, and internal threads are machined at two ends of the connecting sleeve.

Preferably, the pull rod A is in threaded connection with the connecting sleeve and is locked through the nut A.

Preferably, the pull rod B is in threaded connection with the connecting sleeve and is locked through a nut B.

Preferably, the driving spiral arm is connected with the pull rod A through a pin shaft A, a gasket A and an opening pin A.

Preferably, the driven swing arm is connected with the pull rod B through a pin shaft B, a gasket B and a cotter pin B.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses saved 3 round pin shaft holes of connecting rod in FIG. 1 apart from L1, L2's accurate processing, avoided the secondary reworking because of machining error brings, shortened the assemble duration, promoted assembly efficiency.

2. The utility model discloses the condition of unable being connected between connecting rod and the spiral arm that has avoided machining error to bring, when the number of axles of valve is more, this kind of adjustable link mechanism uses just more convenient, has promoted assembly efficiency greatly, has reduced the rework rate of valve, has brought considerable economic benefits for the enterprise.

Drawings

Fig. 1 is a schematic diagram of a prior art multi-vane valve actuator.

Fig. 2 is a schematic structural view of an adjustable linkage mechanism of the multi-blade valve of the present invention.

Fig. 3 is a top view of the adjustable linkage mechanism of the multi-blade valve of the present invention.

In fig. 2 and 3: the connecting device comprises a pull rod A1, a nut A2, a connecting sleeve 3, a nut B4, a pull rod B5, a driving shaft 6, a driving spiral arm 7, a driven spiral arm 8, a driven shaft 9, an external thread A10, an external thread B11, an internal thread 12, a pin shaft A13, a washer A14, a cotter pin A15, a pin shaft B16, a washer B17 and a cotter pin B18.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 2 and 3, the present invention provides a technical solution: an adjustable connecting rod mechanism on a multi-blade valve comprises a pull rod A1, a nut A2, a connecting sleeve 3, a nut B4, a pull rod B5, a driving shaft 6, a driving spiral arm 7, a driven spiral arm 8 and a driven shaft 9, wherein the pull rod A1 is connected with the connecting sleeve 3 through a nut A2, the pull rod B5 is connected with the connecting sleeve 3 through a nut B4, the driving shaft 6 is connected with the driving spiral arm 7, the driving spiral arm 7 is connected with a pull rod A1, the driven spiral arm 8 is connected with a pull rod B5, the driven spiral arm 8 is connected with the driven shaft 9, one end of the pull rod A1 is provided with an external thread A10, two ends of the pull rod B5 are provided with an external thread B11, two ends of the connecting sleeve 3 are both provided with internal threads 12, the pull rod A1 is in threaded connection with the connecting sleeve 3, the nut A2 is used for locking, the pull rod B5 is in threaded connection with the connecting sleeve 3 and is locked through a nut B4, the driving spiral arm 7 is connected with the pull rod A1 through a washer 5, a pin 14 and an opening pin A15, the driven radial arm 8 is connected with the pull rod B5 through a pin B16, a washer B17 and a cotter pin B18.

The use principle is as follows: the driving shaft 6 rotates to drive the driving spiral arm 7 to rotate, the driving spiral arm 7 drives the pull rod A1 to rotate, the pull rod A1 drives the pull rod B5 to rotate through the connecting sleeve 3, the pull rod B5 drives the driven spiral arm 8 to rotate, the driven spiral arm 8 drives the driven shaft 9 to rotate, the whole length of the connecting rod can be properly adjusted by adjusting the thread matching length between the pull rod A1, the pull rod B5 and the connecting sleeve 3 in the assembling process, the accurate processing of the distances L1 and L2 of the pin shaft hole of the connecting rod 3 in the figure 1 is omitted, the secondary reworking caused by processing errors is avoided, the assembling time is shortened, the assembling efficiency is improved, the utility model avoids the condition that the connecting rod and the spiral arm cannot be connected due to the processing errors, when the number of shafts of the valve is more, the adjustable connecting rod mechanism is more convenient to use, the assembling efficiency is greatly improved, and the reworking rate of the valve is reduced, bringing considerable economic benefit for enterprises.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. An adjustable link mechanism on a multi-blade valve is characterized in that: including pull rod A (1), nut A (2), adapter sleeve (3), nut B (4), pull rod B (5), driving shaft (6), initiative spiral arm (7), driven spiral arm (8), driven shaft (9), pull rod A (1) is connected through nut A (2) with adapter sleeve (3), pull rod B (5) is connected through nut B (4) with adapter sleeve (3), driving shaft (6) are connected with initiative spiral arm (7), initiative spiral arm (7) link to each other with pull rod A (1), driven spiral arm (8) link to each other with pull rod B (5), driven spiral arm (8) link to each other with driven shaft (9).

2. The adjustable linkage mechanism on a multi-vane valve of claim 1, wherein: pull rod A (1) one end is equipped with external screw thread A (10), pull rod B (5) both ends all are equipped with external screw thread B (11), internal thread (12) have all been processed at adapter sleeve (3) both ends.

3. The adjustable linkage mechanism on a multi-vane valve of claim 1, wherein: the pull rod A (1) is in threaded connection with the connecting sleeve (3) and is locked through the nut A (2).

4. The adjustable linkage mechanism on a multi-vane valve of claim 1, wherein: the pull rod B (5) is in threaded connection with the connecting sleeve (3) and is locked through the nut B (4).

5. The adjustable linkage mechanism on a multi-vane valve of claim 1, wherein: the driving swing arm (7) is connected with the pull rod A (1) through a pin shaft A (13), a gasket A (14) and a cotter pin A (15).

6. The adjustable linkage mechanism on a multi-vane valve of claim 1, wherein: the driven swing arm (8) is connected with the pull rod B (5) through a pin shaft B (16), a gasket B (17) and a cotter pin B (18).