CN220452734U

CN220452734U - Special pneumatic super wear-resisting polycrystalline silicon cut-off valve

Info

Publication number: CN220452734U
Application number: CN202322174936.3U
Authority: CN
Inventors: 刘国全
Original assignee: Hongyuan Energy Technology Baotou Co ltd
Current assignee: Hongyuan Energy Technology Baotou Co ltd
Priority date: 2023-08-14
Filing date: 2023-08-14
Publication date: 2024-02-06
Anticipated expiration: 2033-08-14

Abstract

The utility model relates to the technical field of valves, in particular to a pneumatic ultra-wear-resistant polycrystalline silicon special cut-off valve which comprises a valve body, wherein an outlet and an inlet are respectively fixedly arranged at the left side and the right side of the valve body, a through hole and a lower fixing piece are respectively arranged at the top of the valve body, an upper fixing piece is fixedly arranged at the top of the lower fixing piece through screw sealing, a pneumatic actuator is fixedly arranged at the top of the upper fixing piece, a valve rod is movably connected inside the pneumatic actuator, a sealing ring is fixedly sleeved outside the valve rod, an upper cavity and a lower cavity are respectively arranged inside the valve body, a cut-off mechanism is arranged between the lower cavity and the valve rod, and the purpose of sealing and jointing the upper cut-off block and the lower cut-off block is achieved through the pneumatic ultra-wear-resistant polycrystalline silicon special cut-off valve, so that the leakage caused by the fact that silicon powder remains between the cut-off blocks is effectively avoided, and the sealing performance of the cut-off valve is improved.

Description

Special pneumatic super wear-resisting polycrystalline silicon cut-off valve

Technical Field

The utility model relates to the technical field of valves, in particular to a pneumatic ultra-wear-resistant cutting valve special for polycrystalline silicon.

Background

The pneumatic cut-off valve has the function of quick cut-off, and has the characteristics of simple structure, sensitive response, reliable action and the like.

At present, a special pneumatic super-wear-resistant cutting valve for polycrystalline silicon is used in the process of pipeline transportation of the polycrystalline silicon, and the cutting valve is mostly used for cutting off the polycrystalline silicon by means of cutting blocks, so that silicon powder is easy to remain on the surfaces of the cutting blocks in a cutting mode, gaps are generated between contact surfaces of the cutting blocks, the situation that the polycrystalline silicon leaks is caused, and the sealing performance of the cutting valve is reduced.

In summary, the utility model solves the problems in the prior art by designing a pneumatic ultra-wear-resistant cutting valve special for polysilicon.

Disclosure of Invention

The utility model aims to provide a pneumatic ultra-wear-resistant cutting valve special for polycrystalline silicon, so as to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a special trip valve of pneumatic super wear-resisting polycrystalline silicon, includes the valve body, the left and right sides of valve body is fixed respectively and is provided with export and import, the top of valve body is provided with through-hole and lower mounting respectively, the top of lower mounting is through screw sealing fixed mounting has the upper mounting, the top of upper mounting is fixed and is provided with pneumatic actuator, pneumatic actuator's inside swing joint has the valve rod, the outside fixed cover of valve rod is equipped with the sealing washer, upper cavity and lower cavity have been seted up respectively to the inside of valve body, be provided with shutdown mechanism between lower cavity and the valve rod;

the cutting mechanism comprises a pressing block fixedly mounted on the bottom surface of the valve rod, a falling opening and an annular groove, wherein the falling opening and the annular groove are respectively formed in the bottom end of the upper cavity, the upper cutting block is fixedly mounted on the side of the bottom of the pressing block, a supporting spring is fixedly mounted at the bottom end of the inner part of the annular groove, and a lower cutting block is fixedly arranged at the top end of the supporting spring.

As a preferable scheme of the utility model, the sizes of the lower fixing piece and the upper fixing piece are consistent.

As a preferable scheme of the utility model, the outlet and the inlet are respectively communicated with the interiors of the lower cavity and the upper cavity.

As a preferable scheme of the utility model, the bottom end of the valve rod movably penetrates through the inner bottom end of the pneumatic actuator and extends into the through hole, the inner bottom end surface of the through hole is flush with the top inner wall of the upper cavity, and the periphery of the inner wall of the through hole is in sealing fit with the outer side surface of the sealing ring.

As a preferable scheme of the utility model, the cross sections of the upper cutting block and the lower cutting block are in circular structures, the bottom surface of the upper cutting block and the top surface of the lower cutting block are respectively inclined and smooth, and are provided with a chromium carbide coating, the outer side surface of the lower cutting block is attached to the inner wall of the annular groove, and the inner bottom end of the falling opening extends to the inner top end of the lower cavity.

As a preferable scheme of the utility model, a plurality of supporting springs are arranged, and the plurality of supporting springs are arranged at equal intervals in an annular shape relative to the bottom surface of the lower cutting block.

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

according to the pneumatic ultra-wear-resistant polycrystalline silicon special cut-off valve, the contact between the upper cut-off block and the lower cut-off block and the elastic support of the supporting spring on the lower cut-off block are realized by means of the structural design in the cut-off mechanism, so that the purpose of sealing and attaching the upper cut-off block and the lower cut-off block is achieved, leakage caused by the fact that silicon powder remains between the cut-off blocks is effectively avoided, and the sealing performance of the cut-off valve is improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of a partially exploded construction of the shut-off valve of the present utility model;

fig. 3 is a schematic view showing a partial sectional structure of the shut-off valve of the present utility model.

In the figure: 1. a valve body; 101. an outlet; 102. an inlet; 103. a through hole; 104. a lower fixing member; 105. an upper fixing member; 106. a pneumatic actuator; 107. a valve stem; 1071. a seal ring; 108. an upper cavity; 109. a lower cavity; 2. a cutting mechanism; 201. pressing the blocks; 202. a drop port; 203. an annular groove; 204. cutting the block; 205. a support spring; 206. the block was cut down.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present utility model are within the scope of protection of the present utility model.

In order that the utility model may be readily understood, several embodiments of the utility model will be described more fully hereinafter with reference to the accompanying drawings, in which, however, the utility model may be embodied in many different forms and is not limited to the embodiments described herein, but instead is provided for the purpose of providing a more thorough and complete disclosure of the utility model.

It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present, and when an element is referred to as being "connected" to the other element, it may be directly connected to the other element or intervening elements may also be present, the terms "vertical", "horizontal", "left", "right" and the like are used herein for the purpose of illustration only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs, and the terms used herein in this description of the utility model are for the purpose of describing particular embodiments only and are not intended to be limiting of the utility model, with the term "and/or" as used herein including any and all combinations of one or more of the associated listed items.

Referring to fig. 1-3, the present utility model provides a technical solution:

the pneumatic ultra-wear-resistant polycrystalline silicon special cut-off valve comprises a valve body 1, wherein an outlet 101 and an inlet 102 are fixedly arranged on the left side and the right side of the valve body 1 respectively, a through hole 103 and a lower fixing piece 104 are arranged at the top of the valve body 1 respectively, an upper fixing piece 105 is fixedly arranged at the top of the lower fixing piece 104 through screw sealing, a pneumatic actuator 106 is fixedly arranged at the top of the upper fixing piece 105, a valve rod 107 is movably connected inside the pneumatic actuator 106, a sealing ring 1071 is fixedly sleeved outside the valve rod 107, and an upper cavity 108 and a lower cavity 109 are respectively arranged inside the valve body 1;

specifically, the outlet 101 and the inlet 102 are respectively communicated with the interiors of the lower cavity 109 and the upper cavity 108;

in this embodiment, the outlet 101 is positioned to primarily facilitate the ingress of polysilicon into the upper cavity 108, while the outlet 101 is positioned to primarily facilitate the egress of polysilicon from the lower cavity 109.

Specifically, the bottom end of the valve rod 107 movably penetrates through the inner bottom end of the pneumatic actuator 106 and extends into the through hole 103, the inner bottom end surface of the through hole 103 is flush with the top inner wall of the upper cavity 108, and the periphery of the inner wall of the through hole is in sealing fit with the outer side surface of the sealing ring 1071;

in this embodiment, the pneumatic actuator 106 is mainly configured to drive the valve rod 107 to move vertically, and the sealing ring 1071 is configured to ensure tightness between the valve rod 107 and the through hole 103, so as to effectively prevent silicon powder in the upper cavity 108 from exuding from a gap between the valve rod 107 and the through hole 103.

Preferably, the lower anchor 104 and the upper anchor 105 are sized to be identical.

In this embodiment, referring to fig. 2 and 3, a cutting mechanism 2 is disposed between the lower cavity 109 and the valve rod 107, the cutting mechanism 2 includes a pressing block 201 fixedly mounted on the bottom surface of the valve rod 107, a drop port 202 and an annular groove 203 respectively opened at the bottom end of the upper cavity 108, an upper cutting block 204 is fixedly mounted at the bottom side of the pressing block 201, a supporting spring 205 is fixedly mounted at the bottom end of the annular groove 203, and a lower cutting block 206 is fixedly disposed at the top end of the supporting spring 205;

specifically, the cross-sectional shapes of the upper cutting block 204 and the lower cutting block 206 are in circular structures, the bottom surfaces of the upper cutting block 204 and the top surface of the lower cutting block 206 are respectively inclined and smooth, and are provided with chromium carbide coatings, the outer side surface of the lower cutting block 206 is attached to the inner wall of the annular groove 203, the inner bottom end of the falling opening 202 extends to the inner top end of the lower cavity 109, a plurality of supporting springs 205 are provided, and the plurality of supporting springs 205 are arranged at equal intervals in an annular shape with respect to the bottom surface of the lower cutting block 206;

in this embodiment, the supporting spring 205 is mainly used for elastically supporting the lower cutting block 206, and the inclined smooth arrangement of the bottom surface of the upper cutting block 204 and the top surface of the lower cutting block 206 can avoid silicon powder remaining on the surface of the lower cutting block, so that the bottom surface of the upper cutting block 204 and the top surface of the lower cutting block 206 are completely attached, thereby achieving the effect of completely isolating the lower cavity 109 from the upper cavity 108, and meeting the demands of users.

The working flow of the utility model is as follows: when the pneumatic ultra-wear-resistant polycrystalline silicon special cut-off valve is used, firstly, the cut-off valve is moved to a required position, secondly, the inlet 102 and the outlet 101 are respectively connected into corresponding polycrystalline silicon conveying pipelines, finally, conveying and cutting-off operation of polycrystalline silicon can be carried out, in the process of conveying and cutting-off operation of polycrystalline silicon, polycrystalline silicon firstly reaches the inlet 102 through the conveying pipelines, enters the upper cavity 108 through the inlet 102, then the polycrystalline silicon is contacted with the lower cut-off block 206 and slides into the falling port 202 along the surface of the lower cavity 202 and is contacted with the inner bottom end of the lower cavity 109, and then is discharged through the outlet 101, further, when the conveying of polycrystalline silicon is required to be cut off, the pneumatic actuator 106 is started, under the action of the pneumatic actuator 106, the valve rod 107 gradually moves downwards, the pressing block 201 moves along with the movement of the valve rod 107, then the pressing block 201 drives the upper cut-off block 204 to move downwards, the upper cut-off block 204 is gradually pressed close to the lower cut-off block 206, then the lower cut-off block 206 starts to press the supporting spring 205, the supporting spring 205 is enabled to generate elastic supporting force for the lower cut-off block 206, and the elastic supporting force of the cut-off block 206 is enabled to be tightly contacted with the upper cut-off valve, and the upper valve is tightly contacted with the lower valve, and the upper supporting force is tightly guaranteed.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.

Claims

1. The utility model provides a special trip valve of pneumatic super wear-resisting polycrystalline silicon, includes valve body (1), its characterized in that: the novel valve is characterized in that an outlet (101) and an inlet (102) are fixedly arranged at the left side and the right side of the valve body (1) respectively, a through hole (103) and a lower fixing piece (104) are arranged at the top of the valve body (1) respectively, an upper fixing piece (105) is fixedly arranged at the top of the lower fixing piece (104) through screw sealing, a pneumatic actuator (106) is fixedly arranged at the top of the upper fixing piece (105), a valve rod (107) is movably connected to the inside of the pneumatic actuator (106), a sealing ring (1071) is fixedly sleeved on the outer side of the valve rod (107), an upper cavity (108) and a lower cavity (109) are respectively formed in the valve body (1), and a cutting mechanism (2) is arranged between the lower cavity (109) and the valve rod (107);

the cutting mechanism (2) comprises a pressing block (201) fixedly mounted on the bottom surface of the valve rod (107), and a falling opening (202) and an annular groove (203) which are respectively formed in the bottom end of the inner portion of the upper cavity (108), an upper cutting block (204) is fixedly mounted on the side of the bottom side of the pressing block (201), a supporting spring (205) is fixedly mounted at the bottom end of the inner portion of the annular groove (203), and a lower cutting block (206) is fixedly arranged at the top end of the supporting spring (205).

2. The pneumatic ultra-wear-resistant polycrystalline silicon dedicated shut-off valve according to claim 1, wherein: the dimensions of the lower fixing piece (104) and the upper fixing piece (105) are consistent.

3. The pneumatic ultra-wear-resistant polycrystalline silicon dedicated shut-off valve according to claim 1, wherein: the outlet (101) and the inlet (102) are respectively communicated with the interiors of the lower cavity (109) and the upper cavity (108).

4. The pneumatic ultra-wear-resistant polycrystalline silicon dedicated shut-off valve according to claim 1, wherein: the bottom of valve rod (107) activity runs through in the inside bottom of pneumatic actuator (106) and extends to the inside of through-hole (103), the inside bottom surface of through-hole (103) is parallel and level with the top inner wall of last cavity (108), and its inner wall all around and the outside surface seal laminating of sealing washer (1071).

5. The pneumatic ultra-wear-resistant polycrystalline silicon dedicated shut-off valve according to claim 1, wherein: the cross-sectional shapes of the upper cutting block (204) and the lower cutting block (206) are of circular structures, the bottom surfaces of the upper cutting block and the top surfaces of the lower cutting block (206) are respectively inclined and smooth, chromium carbide coatings are arranged on the top surfaces of the upper cutting block and the lower cutting block, the outer side surfaces of the lower cutting block (206) are attached to the inner wall of the annular groove (203), and the inner bottom end of the falling opening (202) extends to the inner top end of the lower cavity (109).

6. The pneumatic ultra-wear-resistant polycrystalline silicon dedicated shut-off valve according to claim 1, wherein: the support springs (205) are multiple, and the support springs (205) are arranged at equal intervals in an annular mode relative to the bottom surface of the lower cutting block (206).