CN218718888U

CN218718888U - Novel universal head for poppet valve

Info

Publication number: CN218718888U
Application number: CN202222836820.7U
Authority: CN
Inventors: 李雪松; 姜圣列; 李树雷
Original assignee: Shanghai Yongjiang Environmental Engineering Co ltd
Current assignee: Shanghai Yongjiang Environmental Engineering Co ltd
Priority date: 2022-10-27
Filing date: 2022-10-27
Publication date: 2023-03-24
Anticipated expiration: 2032-10-27

Abstract

The utility model relates to an environmental protection, exhaust-gas treatment field are a novel universal head for poppet valve particularly, including first universal head flange, universal head connecting thread spare, second universal head flange, universal head connecting axle end part. Compared with the prior art, the utility model, its advantage lies in: the utility model discloses it is firm to connect, easy dismounting. When the cylinder shaft is connected with the universal head connecting threaded part through threads, the cylinder shaft can be firmly fixed in the universal head connecting threaded part only by a flat key which is convenient to disassemble and assemble. The universal head connecting shaft end piece is in mortise and tenon connection with the moving shaft, and meanwhile, a gap is reserved between the universal head connecting shaft end piece and the moving shaft, so that the effect of adjusting concentricity can be achieved. The first universal head connecting flange is fixedly connected with the universal head connecting threaded piece through four perforated bolts, and the perforated bolts are tightened by steel wire ropes, so that the connection tightness of the air cylinder and the moving shaft is further improved.

Description

Novel universal head for poppet valve

Technical Field

The utility model relates to an environmental protection, exhaust-gas treatment field are a novel universal head for poppet valve particularly.

Background

With the development of the times, the requirements and standards of people for environmental protection are gradually increased, especially in the field of waste gas purification. RTO is an efficient and clean organic waste gas treatment device, and compared with the traditional catalytic combustion and direct combustion type TO furnaces, the RTO has the characteristics of high thermal efficiency, low operation cost, capability of treating high-concentration waste gas with large air volume and the like. An important component of an RTO is the poppet valve, the stability of which directly affects the efficiency of the RTO in treating exhaust gas. The universal head is an important part for connecting the lift valve cylinder and the moving shaft. The function is to adjust the stroke of the poppet valve and correct the problem of non-concentricity of poppet valve movement. The existing universal head is a standard component purchased from outside, and a cylinder and a moving shaft are connected by virtue of threads. The existing method is to use a double-lug stop washer or a thread sealing glue, but is unreliable because the poppet valve motion frequency of the RTO is too high and has no break all the year round. The double-lug stop gasket is easy to drop due to thin thickness and soft texture, and the threaded sealant has the problems of aging and inconvenient disassembly and assembly during maintenance. There is therefore a need for a universal head that can securely connect a poppet cylinder and a movable shaft to ensure stable operation of the poppet.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a can firmly connect poppet valve cylinder and motion axle, prevent its universal head that becomes flexible and drop.

In order to achieve the purpose, the novel universal head for the poppet valve is designed, and is characterized by comprising a first universal head connecting flange, wherein the first universal head connecting flange is sleeved on a cylinder shaft; the universal head is connected with a threaded part, one end of the universal head is connected with a first universal head connecting flange in a matched mode, internal threads are formed in the universal head connecting threaded part and used for being in threaded connection with the cylinder shaft, and at least one flat key is arranged on one side of the internal threads of the universal head connecting threaded part and matched with a key groove of the cylinder shaft; the second universal head connecting flange is used for being sleeved on the moving shaft; one end of the universal head connecting shaft end part is connected with the second universal head connecting flange in a matched mode, and one side of the other end of the universal head connecting shaft end part is provided with a loose joint which is connected with the moving shaft mortise and tenon.

The utility model discloses still have following preferred technical scheme:

1. the first universal joint connecting flange is provided with a step groove and is matched and connected with a protruding part at one end of the universal joint connecting threaded piece.

2. Two or more than two symmetrical key grooves are arranged on the side surface of the internal thread of the universal head connecting thread piece.

3. The second universal head connecting flange is provided with a step groove which is matched and connected with a protruding part at one end of the universal head connecting shaft end part.

4. One side of the universal head connecting shaft end piece is provided with an opening and is in mortise and tenon connection with the moving shaft, and a gap is reserved between the inner side of the universal head connecting shaft end piece and the end part of the moving shaft.

5. The end face of the flat key is provided with drill threads.

6. A gap is reserved at the matching position of the first universal joint connecting flange and the universal joint connecting threaded piece.

7. The first universal head connecting flange and the second universal head connecting flange are fixed through a bolt with a hole, and a steel wire rope penetrates through the bolt with the hole to be tightened.

Compared with the prior art, the utility model, its advantage lies in: the utility model discloses it is firm to connect, easy dismounting. When the cylinder shaft is connected with the universal head connecting threaded part through threads, the cylinder shaft can be firmly fixed in the universal head connecting threaded part only by a flat key which is convenient to disassemble and assemble. The universal head connecting shaft end piece is in mortise and tenon connection with the moving shaft, and meanwhile, a gap is reserved between the universal head connecting shaft end piece and the moving shaft, so that the effect of adjusting concentricity can be achieved. The first universal head connecting flange is fixedly connected with the universal head connecting threaded piece through four perforated bolts, and meanwhile, the perforated bolts are tightened by steel wire ropes, so that the connection tightness of the cylinder and the moving shaft is further improved.

Drawings

Fig. 1 is a schematic front view of the present invention;

FIG. 2 isbase:Sub>A schematic left-side view of the utility model in the A-A direction;

FIG. 3 is a schematic structural view of a top view section in the direction B-B of the present invention;

FIG. 4 is a schematic perspective view of a top view of the cross section in the direction B-B of the present invention;

in the figure: 1. the first universal head is connected with the flange; 2. a cylinder shaft; 3. the universal head is connected with a threaded piece; 4. a flat bond; 5. a keyway; 6. the second universal head is connected with the flange; 7. a motion shaft; 8. the universal head is connected with the shaft end part; 9. a stepped groove; 10. drilling a thread; 11. a gap; 12. a bolt with a hole; 13. and (4) opening.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, and the structure and principle of the present invention will be clear to those skilled in the art. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The utility model discloses a concrete structure is as shown in fig. 1 to fig. 4, including first universal head flange 1, cylinder shaft 2, universal head connecting thread spare 3, parallel key 4, keyway 5, second universal head flange 6, motion axle 7, universal head connecting end part 8, eyebolt 12.

Installation: the cylinder shaft 2 needs to be splined 5. Firstly, a first universal-joint connecting flange 1 is sleeved on a cylinder shaft 2, then a universal-joint connecting threaded part 3 is in threaded connection with the cylinder shaft 2, the universal-joint connecting threaded part 3 is rotated to be adjusted to a proper position (the stroke adjusting function is achieved), the universal-joint connecting threaded part 3 is aligned with a key groove of the cylinder shaft 2, and a flat key 4 is knocked in, so that the threads of the universal-joint connecting threaded part 3 and the cylinder shaft 2 cannot rotate. Meanwhile, the first universal joint connecting flange 1 is provided with a stepped groove 9 which can be matched and connected with a protruding part at one end of the universal joint connecting threaded part 3.

The second universal joint connecting flange 6 is sleeved on the moving shaft 7, and then the moving shaft 7 is clamped into the universal joint connecting shaft end part 8. The second universal joint connecting flange 6 is also provided with a stepped groove 9 which can be matched and connected with a convex part at one end of a universal joint connecting shaft end part 8. The first universal head connecting flange 1 and the second universal head connecting flange 6 are fixed by the bolts 12 with holes.

As shown in fig. 1, four eye bolts 12 connecting the first universal joint connecting flange 1 and the second universal joint connecting flange 6 must be tied tightly by passing steel wires through them to prevent the eye bolts 12 from loosening.

As shown in figure 2, the universal head connecting screw member 3 is provided with two symmetrical key grooves 5, half-turn adjustment is realized each time, the minimum adjustment amount of the stroke is the length of half-turn rotation, in principle, more grooves are provided, the minimum adjustment amount is more accurate, but the thread broken openings are too many, the strength is reduced, and 2 key grooves are enough to be adjusted.

As shown in FIG. 3, the cylinder shaft 2 and the universal head connecting screw member 3 are matched with a gap 11, so that the vertical and horizontal directions can be conveniently adjusted. The universal head connecting shaft end part 8 is provided with a movable opening 13 which is in mortise and tenon connection with the moving shaft 7, and meanwhile, a gap 11 is formed between the universal head connecting shaft end part 8 and the moving shaft 7, so that the effect of adjusting concentricity can be achieved. The second universal joint connecting flange 6 is a connecting flange and also plays a role of limiting the movement shaft 7.

As shown in fig. 4, the end surface of the flat key 4 near the first universal joint flange 1 needs to be drilled with threads 10 to facilitate removal with a screwer.

The above, only for the concrete implementation of this utility model, but the scope of protection of this utility model is not limited to this, and any person skilled in this technical field is in the technical scope of this utility model discloses, according to the technical scheme of this utility model and novel design add in equal replacement or change, all should be covered in the scope of protection of this utility model.

Claims

1. A novel universal head for a poppet valve, comprising

The first universal head connecting flange is used for being sleeved on the cylinder shaft;

the universal joint connecting threaded piece is characterized in that one end of the universal joint connecting threaded piece is connected with a first universal joint connecting flange in a matched mode, internal threads are formed in the universal joint connecting threaded piece and used for being in threaded connection with a cylinder shaft, and at least one flat key is arranged on one side of the internal threads of the universal joint connecting threaded piece and matched with a key groove of the cylinder shaft;

the second universal head connecting flange is used for being sleeved on the moving shaft;

one end of the universal head connecting shaft end part is connected with the second universal head connecting flange in a matched mode, and one side of the other end of the universal head connecting shaft end part is provided with a loose joint which is connected with the moving shaft through a mortise and tenon mode.

2. The novel universal head for the poppet valve as claimed in claim 1, wherein the first universal head coupling flange is formed with a stepped groove to be coupled with a protrusion formed at one end of a universal head coupling screw member.

3. The novel universal head for the poppet valve as claimed in claim 1, wherein two or more symmetrical key grooves are formed in the side surface of the internal thread of the universal head connection screw member.

4. The new type universal head for poppet valve as claimed in claim 1, wherein the second universal head connecting flange is formed with a stepped groove to be engaged with a protrusion formed at one end of a connecting shaft end member of the universal head.

5. The new type of universal head for poppet valve as claimed in claim 1, wherein the universal head connecting shaft end piece has an opening at one side thereof and is mortise and tenon connected to the moving shaft, and the inner side of the universal head connecting shaft end piece is spaced from the end of the moving shaft.

6. A novel gimbals head for a poppet valve as defined in claim 1, wherein said flat key end surface is provided with drill threads.

7. The new type of universal head for a poppet valve as claimed in claim 2, wherein a gap is left where the first universal head connection flange and the universal head connection screw are engaged.

8. The novel joint for a poppet valve as claimed in claim 1, wherein the first joint flange and the second joint flange are fixed by a bolt having a hole, and are fastened by a wire rope passing through the bolt having a hole.