CN212502468U

CN212502468U - Stainless steel double-sealing star-shaped valve

Info

Publication number: CN212502468U
Application number: CN202020921788.0U
Authority: CN
Inventors: 万林应; 刘涛; 王二虎
Original assignee: Tongling Qiujing Machinery Co ltd
Current assignee: Tongling Qiujing Machinery Co ltd
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2021-02-09
Anticipated expiration: 2030-05-27

Abstract

The utility model discloses a stainless steel double containment star valve, including the valve body, be middle revolving axle, bearing frame, antifriction bearing and the motor reducer that the level set up, middle revolving axle runs through the cover and establishes at the valve body middle part, and the equal vertical bearing frame that is provided with in valve body both ends, all overlaps in two bearing frames to be equipped with antifriction bearing. The utility model has the advantages that: the labyrinth seals and the packing are adopted at two ends of the middle rotating shaft, the labyrinth seals are formed by arranging a plurality of annular sealing teeth which are sequentially arranged around the middle rotating shaft, a series of interception gaps and expansion cavities are formed between every two annular sealing teeth, the sealed medium generates throttling effect when passing through the interception gaps of the zigzag labyrinth to achieve the purpose of leakage resistance, the packing fills the small gaps between the sealing seat and the middle rotating shaft to achieve good sealing effect, the double-seal combination of the labyrinth seals and the packing seals greatly improves the sealing reliability, and the star-shaped valve is greatly helped to normally operate.

Description

Stainless steel double-sealing star-shaped valve

Technical Field

The utility model relates to a star valve specifically is a stainless steel double containment star valve, belongs to star type valve application technical field.

Background

The star-shaped discharge valve is a commonly used discharger device at present and is often used for conveying powdery materials.

The existing star valve still has great defects when in use, the rolling bearing on the existing star valve is exposed outside, and external substances easily pollute the rolling bearing, so that the service life of the rolling bearing is short, the rotation of a middle rotating shaft of the star valve is not smooth enough, and the working stability of the star valve is poor. The two ends of the middle shaft of the existing star valve are sealed by a single skeleton, and the star valve can only be applied to occasions with stricter sealing requirements, the whole sealing performance and reliability of the star valve are poor, the existing star valve cannot be used in severe and strong-corrosivity environments for a long time, and the service life is short.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an aim at just lies in that to expose externally in order to solve the antifriction bearing on the current star valve, the foreign matter pollutes antifriction bearing very easily, leads to antifriction bearing's life weak point, and the middle revolving axle that leads to the star valve rotates not level and smooth enough, smoothly, leads to the poor stability of star valve work. The two ends of the middle shaft of the existing star valve are sealed by a single skeleton, and the star valve can only be applied to occasions with stricter sealing requirements, the whole sealing performance and reliability of the star valve are poor, the existing star valve cannot be used in harsh and highly corrosive environments for a long time, and the service life is short, so that the stainless steel double-sealing star valve is provided.

The purpose of the utility model can be realized by the following technical scheme: a stainless steel double-sealing star-shaped valve comprises a valve body, a middle rotating shaft, a bearing seat, a rolling bearing and a motor reducer, wherein the middle rotating shaft is horizontally arranged, the middle rotating shaft penetrates through the middle of the valve body and is sleeved with the middle of the valve body, bearing seats are vertically arranged at both ends of the valve body, rolling bearings are sleeved in the two bearing seats, sealing glands are arranged at both sides of the middle rotating shaft and play a role in sealing and pressing, a motor reducer is arranged at one end of the valve body, a blind plate is arranged at the middle part of the other end of the valve body, the blind plate prevents foreign matters from entering, sealing seats are sleeved on two sides of the middle rotating shaft and used for installing and sealing the middle rotating shaft, and a packing, a labyrinth seal and a wear-resistant sleeve are sleeved between the seal seat and the middle rotating shaft, the middle rotating shaft is protected by the wear-resistant sleeve, so that the wear is reduced, and the two bearing blocks are respectively arranged at the end of the motor reducer and the end far away from the motor;

the labyrinth seal is provided with a plurality of annular seal teeth at equal intervals in sequence, and a closure gap is arranged between every two annular seal teeth.

The utility model discloses a further technological improvement lies in: two oiling lubricating ports are vertically arranged above two sides of the valve body, and a connecting sleeve is arranged between the two oiling lubricating ports on two sides of the valve body.

The utility model discloses a further technological improvement lies in: two rolling bearings are respectively sleeved at two ends of the middle rotating shaft, and the rolling bearings are arranged in the two bearing seats, so that the probability of polluting the rolling bearings by external substances is reduced, and the service life of the ball bearings is greatly prolonged.

The utility model discloses a further technological improvement lies in: and sealing elements are arranged at two ends of the middle rotating shaft.

The utility model discloses a further technological improvement lies in: the feeding port is arranged above the middle of the valve body, the discharging port is arranged below the middle of the valve body, when equipment on the lower portion of the discharging port needs to be fed, the star-shaped valve works, materials in the equipment on the upper portion of the feeding port enter a cavity of the middle rotating shaft, the motor speed reducer rotates to drive the output end of the speed reducer to rotate, so that the middle rotating shaft is driven to rotate, the two rolling bearings are matched with the middle rotating shaft to rotate together to roll, and feeding is conducted on the.

The utility model discloses a further technological improvement lies in: and access hole covers are arranged above one ends of the outer walls of the valve bodies, and the star-shaped valve is maintained and cleaned of materials attached to the cavity by opening the access hole covers.

The utility model discloses a further technological improvement lies in: an expansion cavity is arranged in the closure gap, and a plurality of annular sealing teeth are attached to the middle rotating shaft.

The utility model discloses a further technological improvement lies in: the packing is made of graphite, six cavities are formed in the middle of the middle rotating shaft in an equal radian mode, the six cavities are identical in size, the wear-resistant sleeve is sleeved on the middle rotating shaft, the six cavities of the middle rotating shaft are used for loading powdery materials, and the six cavities are identical in size and specification, so that the consistent feeding amount is guaranteed each time.

The utility model discloses a further technological improvement lies in: the use method of the star valve specifically comprises the following steps:

the method comprises the following steps: the middle revolving shaft is inserted into the output end of the motor speed reducer, the output end of the speed reducer is in a socket joint type, and the feed inlet and the discharge outlet are connected with external pipelines or equipment;

step two: when the equipment at the lower part of the discharge port needs to be charged, the star-shaped valve works, the material in the equipment at the upper part of the feed port enters a cavity of the middle rotating shaft, the motor speed reducer rotates to drive the output end of the speed reducer to rotate, so that the middle rotating shaft is driven to rotate, and the two rolling bearings are matched with the middle rotating shaft to rotate together to roll so as to charge the equipment at the lower part.

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

1. the utility model discloses the antifriction bearing at both ends is installed in the bearing frame, makes foreign matter pollute antifriction bearing's probability reduce, has improved antifriction bearing's life greatly.

2. The labyrinth seals and the packing are adopted at two ends of the middle rotating shaft, the labyrinth seals are formed by arranging a plurality of annular sealing teeth which are sequentially arranged around the middle rotating shaft, a series of interception gaps and expansion cavities are formed between every two annular sealing teeth, the sealed medium generates throttling effect when passing through the interception gaps of the zigzag labyrinth to achieve the purpose of leakage resistance, the packing fills the small gaps between the sealing seat and the middle rotating shaft to achieve good sealing effect, the double-seal combination of the labyrinth seals and the packing seals greatly improves the sealing reliability, and the star-shaped valve is greatly helped to normally operate.

3. The utility model discloses a star type valve material is the stainless steel, and this star type valve can use with abominable, the strong environment of corrosivity, and life is longer.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic overall cross-sectional view of the present invention.

Fig. 2 is a side view of the present invention.

Fig. 3 is a front view of the labyrinth seal structure of the present invention.

Fig. 4 is a front view of the intermediate rotating shaft of the present invention.

Fig. 5 is a side view of the intermediate rotating shaft of the present invention.

In the figure: 1. a middle rotating shaft; 2. a valve body; 3. adding oil to lubricate the opening; 4. connecting a sleeve; 5. a bearing seat; 6. a sealing gland; 7. a blind plate; 8. a rolling bearing; 9. a seal member; 10. packing and filling; 11. a sealing seat; 13. labyrinth sealing; 14. a wear-resistant sleeve; 15. a motor reducer; 16. a manhole cover; 17. an annular seal tooth; 18. a shut-off gap.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-5, a stainless steel dual-seal star valve comprises a valve body 2, a middle rotating shaft 1 horizontally arranged, bearing seats 5, rolling bearings 8 and a motor reducer 15, wherein the middle rotating shaft 1 is sleeved in the middle of the valve body 2 in a penetrating manner, the bearing seats 5 are vertically arranged at both ends of the valve body 1, the rolling bearings 8 are sleeved in the two bearing seats 5, sealing glands 6 are arranged at both sides of the middle rotating shaft 1, the sealing glands 6 play a role in sealing and compressing, the motor reducer 15 is arranged at one end of the valve body 2, a blind plate 7 is arranged at the middle of the other end of the valve body 2, foreign matters are prevented from entering through the blind plate 7, sealing seats 11 are sleeved at both sides of the middle rotating shaft 1, the sealing seats 11 are used for mounting the middle rotating shaft 1, and packing 10, labyrinth seals 13 and wear-resistant sleeves 14 are sleeved between the sealing, the wear-resistant sleeve 14 protects the middle rotating shaft 1 and reduces the wear;

wherein, labyrinth seal 13 is last to have set gradually a plurality of annular seal tooth 17 at equidistant, and a plurality of annular seal tooth 17 all is provided with closure gap 18 between two liang.

Two oiling lubricating ports 3 are vertically arranged above two sides of the valve body 2, and a connecting sleeve 4 is arranged between the two oiling lubricating ports 3 on two sides of the valve body 2.

Two rolling bearings 8 are respectively sleeved at two ends of the middle rotating shaft 1, and the rolling bearings 8 are arranged in the bearing seat 5, so that the probability of polluting the rolling bearings 8 by external substances is reduced, and the service life of the ball bearing is greatly prolonged.

And sealing elements 9 are arranged at both ends of the middle rotating shaft 1.

A feeding hole is formed in the upper portion of the middle of the valve body 2, a discharging hole is formed in the lower portion of the middle of the valve body 2, when equipment on the lower portion of the discharging hole needs to be charged, the star-shaped valve works, materials in the equipment on the upper portion of the feeding hole enter a cavity of the middle rotating shaft 1, the motor speed reducer 15 rotates to drive the output end of the speed reducer to rotate, so that the middle rotating shaft 1 is driven to rotate, and the two rolling bearings 8 are matched with the middle rotating shaft 1 to.

And a manhole cover 16 is arranged above one end of the outer wall of the valve body 2, and the star-shaped valve is overhauled, maintained and cleaned of objects attached to the cavity by opening the manhole cover 16.

The shut-off gap 18 is provided with an expansion cavity inside, and a plurality of annular sealing teeth 17 are attached and connected to the middle rotating shaft 1.

Packing 10 is the graphite material, and middle revolving axle 1 middle part equal radian is provided with six die cavities, and six die cavities size is all the same, and wear-resisting sleeve pipe 14 cup joints on middle revolving axle 1, and middle revolving axle 1 has six die cavities for loading powdery material, and 6 die cavities size specification are the same to guarantee that the volume of feeding in raw material is unanimous every time.

The use method of the star valve specifically comprises the following steps:

the method comprises the following steps: the middle revolving shaft 1 is inserted into the output end of a motor reducer 15, the output end of the reducer is in a socket joint type, and a feed inlet and a discharge outlet are connected with external pipelines or equipment;

step two: when the equipment at the lower part of the discharge port needs to be charged, the star valve works, the material in the equipment at the upper part of the feed port enters a cavity of the middle rotating shaft 1, the motor speed reducer 15 rotates to drive the output end of the speed reducer to rotate, so that the middle rotating shaft 1 is driven to rotate, and the two rolling bearings 8 are matched with the middle rotating shaft 1 to rotate and roll together to charge the equipment at the lower part.

The rolling bearings 8 at the two ends of the utility model are arranged in the two bearing seats 5, so that the probability of the rolling bearings 8 being polluted by external substances is reduced, and the service life of the rolling bearings is greatly prolonged;

the labyrinth seals 13 and the packing 10 are adopted at two ends of the middle rotating shaft 1, the labyrinth seals 13 are a plurality of annular seal teeth 17 which are sequentially arranged around the middle rotating shaft 1, a series of interception gaps 18 and expansion cavities are formed between every two annular seal teeth 17, the sealed medium generates throttling effect when passing through the interception gaps 18 of the zigzag labyrinth to achieve the purpose of leakage resistance, the packing fills the tiny gaps between the seal seat and the middle rotating shaft 1 to achieve good sealing effect, the double-seal combination of the labyrinth seals and the packing seals greatly improves the sealing reliability, and the double-seal combination greatly helps the normal operation of the star valve.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not exhaustive and do not limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a stainless steel double containment star valve, includes valve body (2), is middle revolving axle (1), bearing frame (5), antifriction bearing (8) and motor reducer (15) that the level set up, its characterized in that: the middle rotating shaft (1) is sleeved in the middle of the valve body (2) in a penetrating mode, bearing seats (5) are vertically arranged at two ends of the valve body (2), rolling bearings (8) are sleeved in the two bearing seats (5), sealing glands (6) are arranged on two sides of the middle rotating shaft (1), a motor speed reducer (15) is arranged at one end of the valve body (2), a blind plate (7) is arranged in the middle of the other end of the valve body (2), sealing seats (11) are sleeved on two sides of the middle rotating shaft (1), and packing (10), labyrinth seals (13) and wear-resistant sleeves (14) are sleeved between the sealing seats (11) and the middle rotating shaft (1);

a plurality of annular sealing teeth (17) are sequentially arranged on the labyrinth seal (13) at equal intervals, and closure gaps (18) are arranged between every two annular sealing teeth (17).

2. A stainless steel dual seal star valve according to claim 1, wherein two oil-filled lubrication ports (3) are vertically provided above both sides of the valve body (2), and a connecting sleeve (4) is provided between the two oil-filled lubrication ports (3) at both sides of the valve body (2).

3. A stainless steel double sealing star valve according to claim 1, wherein two rolling bearings (8) are respectively sleeved at both ends of the intermediate rotating shaft (1).

4. A stainless steel dual seal star valve according to claim 1, characterized in that both ends of said intermediate rotating shaft (1) are provided with sealing members (9).

5. The stainless steel dual seal star valve according to claim 1, wherein a feed port is provided above the middle of the valve body (2), and a discharge port is provided below the middle of the valve body (2).

6. A stainless steel dual seal star valve according to claim 1, characterized in that a service hole cover (16) is provided above one end of the outer wall of said valve body (2).

7. A stainless steel dual seal star valve according to claim 1, characterized in that inside said shut-off gap (18) an expansion cavity is provided, a number of annular sealing teeth (17) being snugly connected to the intermediate rotating shaft (1).

8. The stainless steel dual-seal star valve as claimed in claim 1, wherein the packing (10) is made of graphite, six cavities are arranged in the middle of the middle rotating shaft (1) in an equal radian manner, the six cavities are identical in size, and the wear-resistant sleeve (14) is sleeved on the middle rotating shaft (1).