CN212745167U

CN212745167U - Exhaust switching valve

Info

Publication number: CN212745167U
Application number: CN202021462901.XU
Authority: CN
Inventors: 叶中华
Original assignee: Zhejiang Yofull Machinery Co ltd
Current assignee: Zhejiang Yofull Machinery Co ltd
Priority date: 2020-07-22
Filing date: 2020-07-22
Publication date: 2021-03-19
Anticipated expiration: 2030-07-22

Abstract

The utility model provides an exhaust switching valve, including two valve bodies that dock each other, all be equipped with the valve pocket in two valve bodies, the valve body lateral wall all is equipped with the inlet pipe that communicates with the valve pocket, and the butt joint department each other of two valve bodies is equipped with a discharging pipe that communicates with each valve pocket, the one end that the valve body docks each other dorsad is equipped with case actuating mechanism, be equipped with in the valve pocket and slide along the valve body axial direction through case actuating mechanism control to the case of break-make between control discharging pipe and the inlet pipe; the exhaust valve body comprises an air inlet channel, an air outlet channel and an exhaust valve core used for controlling the on-off of the air inlet channel and the air outlet channel, and the air inlet channel is communicated with the end of one end of the inlet pipe close to the valve core. The utility model has the advantages of the blowing of exhausting is more thorough, effectively practices thrift spinning in-process manufacturing cost.

Description

Exhaust switching valve

Technical Field

The utility model relates to a fuse-element valve field, concretely relates to exhaust diverter valve.

Background

The melt valve is used for directly extracting and cutting off high-temperature (or vacuum) melt flow or polymer from a pipeline, the existing melt valve is often equipped with an exhaust function and used for exhausting air in an air retention area at the front end of the melt in a pipeline, but in order to save materials, an exhaust valve body is generally directly welded on a melt pipe (a feed pipe) of a switching valve, so that the exhaust valve can only exhaust the air in the pipeline between a position connected with an exhaust pipe and the front end of the melt, but the air in the feed pipe between the position connected with the exhaust pipe and a valve core of the melt valve can only be forcibly flushed by the melt to be exhausted, and a large amount of melt is wasted due to flushing requirements.

SUMMERY OF THE UTILITY MODEL

Based on the problem, the utility model aims to provide an exhaust blowing is more thorough, effectively practices thrift spinning in-process manufacturing cost's exhaust diverter valve.

Aiming at the problems, the following technical scheme is provided: an exhaust switching valve comprises two valve bodies which are butted with each other, wherein a valve cavity is formed in each of the two valve bodies, a feeding pipe communicated with the valve cavity is arranged on the side wall of each valve body, a discharging pipe communicated with each valve cavity is arranged at the butted position of the two valve bodies, a valve core driving mechanism is arranged at one end of each valve body, which is opposite to the butted end, and a valve core which is controlled by the valve core driving mechanism to slide along the axial direction of each valve body is arranged in each valve cavity so as to control the connection and disconnection between the discharging pipe; the exhaust valve body comprises an air inlet channel, an air outlet channel and an exhaust valve core used for controlling the on-off of the air inlet channel and the air outlet channel, and the air inlet channel is communicated with the end of one end of the inlet pipe close to the valve core.

In the above-mentioned structure, with the intake duct of exhaust valve body and the one end intercommunication of the adjacent case of inlet pipe, guarantee to exhaust the air between inlet pipe and the case through the exhaust valve body as far as, reduce the later stage because of inlet pipe and case lead to scouring out the air in the air retention district through a large amount of fusants because of leaving too much air, it is extravagant to reduce the material, practices thrift the manufacturing cost among the spinning process.

The utility model discloses further set up to, set up the feed channel with the inlet pipe intercommunication on the valve body, the exhaust passage has been seted up on the feed channel, the exhaust valve body welds on the valve body, exhaust passage and intake duct intercommunication.

In the structure, the exhaust passage can be connected with the tail end of the feed passage, namely, the purpose of communicating the inlet passage with the end of the feed pipe close to the valve core is realized.

The utility model discloses further set up to, be equipped with the exhaust valve seat on the exhaust passage, exhaust valve core and exhaust valve seat counterbalance seal cut off the break-make between exhaust passage and the exhaust passage.

In the structure, the exhaust valve core is matched with the exhaust valve seat on the valve body, and the intercepting position when the exhaust valve core is matched and cut off with the exhaust valve seat can be as close to the feed channel as possible, so that the volume of an air detention area is reduced.

The utility model discloses further set up to, the exhaust valve core tip passes the exhaust valve seat, the laminating of the cylinder profile of exhaust valve core terminal surface and feed channel inner wall.

In the above-mentioned structure, when guaranteeing that air discharge valve core and air discharge valve seat adaptation and cuting the fuse-element, air discharge valve core tip and feed channel inner wall form a complete cylinder surface of revolution, reduce the delay of fuse-element, improve fuse-element mobility to avoid the delay district to cause material degradation and carbonization so that influence product quality.

The utility model discloses further set up to, be equipped with the hand wheel on the exhaust valve body, the one end of exhaust valve core dorsad exhaust valve seat is equipped with the lead screw with hand wheel screw-thread fit.

In the structure, the hand wheel drives the screw rod to move axially so as to control the opening and closing of the exhaust valve core.

The utility model discloses further set up to, the outer cladding of valve body, inlet pipe and discharging pipe has the heating jacket, be equipped with the heating intermediate layer between heating jacket and valve body, inlet pipe and the discharging pipe, be equipped with on the heating jacket with heat medium import and the heat medium export of heating intermediate layer intercommunication.

In the above-mentioned structure, the heat medium flows from the heat medium export after entering into the heating intermediate layer from the heat medium import for the temperature of valve body, inlet pipe and discharging pipe is guaranteed, avoids the fuse-element to take place to cool down and influences mobility.

The utility model has the advantages that: the air inlet channel of the exhaust valve body is communicated with one end, close to the valve core, of the inlet pipe, air between the inlet pipe and the valve core can be exhausted through the exhaust valve body as far as possible, air in an air retention area is reduced in the later period due to the fact that too much air is left in the inlet pipe and the valve core, the material waste is reduced, and the production cost in the spinning process is saved.

Drawings

Fig. 1 is the structure diagram of the main view partial section of the utility model.

Fig. 2 is a schematic view of the cutting structure a-a of fig. 1 of the present invention.

Fig. 3 is an enlarged schematic view of a portion B of fig. 2 according to the present invention.

The reference numbers in the figures mean: 10-a valve body; 11-a valve cavity; 12-a feed pipe; 13-a discharge pipe; 14-a spool drive mechanism; 15-a valve core; 16-a feed channel; 17-an exhaust passage; 171-exhaust valve seat; 18-a heating jacket; 181-heating the interlayer; 182-a heating medium inlet; 183-heating medium outlet; 20-an exhaust valve body; 21-an air inlet channel; 22-an air outlet channel; 23-an exhaust valve core; 231-a screw rod; 24-hand wheel.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Referring to fig. 1 to 3, the exhaust switching valve shown in fig. 1 to 3 includes two valve bodies 10 butted with each other, a valve cavity 11 is disposed in each of the two valve bodies 10, a feeding pipe 12 communicated with the valve cavity 11 is disposed on a side wall of each of the valve bodies 10, a discharging pipe 13 communicated with each of the valve cavities 11 is disposed at a butt joint position of the two valve bodies 10, a valve core driving mechanism 14 is disposed at an end of each of the valve bodies 10, which is opposite to the butt joint position, and a valve core 15 controlled to slide along an axial direction of the valve body 10 by the valve core driving mechanism 14 is disposed in the valve cavity 11, so as to control on/off between the discharging; still include two with the exhaust valve body 20 of two valve body 10 one-to-one settings, exhaust valve body 20 includes intake duct 21, gas outlet passage 22 and is used for controlling the exhaust valve core 23 of intake duct 21 and gas outlet passage 22 break-make, intake duct 21 communicates with the end of the one end of the inlet pipe 12 adjacent valve core 15.

In the above-mentioned structure, the intake duct 21 with the exhaust valve body 20 communicates with the one end of the adjacent case 15 of inlet pipe 12, guarantees to exhaust the air between inlet pipe 12 and the case 15 through the exhaust valve body 20 as far as, reduces the later stage and leads to the air in the air detention district that need be exhausted through a large amount of melts because of leaving too much air because of inlet pipe 12 and case 15 and erode, reduces the material extravagant, practices thrift the manufacturing cost among the spinning process.

In this embodiment, a feed channel 16 communicated with the feed pipe 12 is formed in the valve body 10, an exhaust channel 17 is formed in the feed channel 16, the exhaust valve body 20 is welded to the valve body 10, and the exhaust channel 17 is communicated with the intake channel 21.

In the above structure, the exhaust passage 17 is ensured to be connected with the end of the feed passage 12, that is, the purpose of communicating the inlet passage 21 with the end of the feed pipe 12 adjacent to the valve core 15 is achieved.

In this embodiment, the exhaust passage 17 is provided with an exhaust valve seat 171, and the exhaust valve core 23 abuts against the exhaust valve seat 171 to seal and cut off the connection and disconnection between the exhaust passage 21 and the exhaust passage.

In the above structure, the exhaust valve core 23 is adapted to the exhaust valve seat 171 on the valve body 10, and the cut-off position when the exhaust valve core 23 is adapted to the exhaust valve seat 171 can be as close as possible to the feed channel 16, thereby reducing the volume of the air retention area.

In this embodiment, the end of the air release valve element 23 passes through the air release valve seat 171, and the end surface of the air release valve element 23 is attached to the cylindrical contour of the inner wall of the feed channel 16.

In the above-mentioned structure, when guaranteeing that air discharge valve core 23 and air discharge valve seat 171 adaptation and truncate the fuse-element, air discharge valve core 23 tip and 16 inner walls of feed channel form a complete cylinder surface of revolution, reduce the delay of fuse-element, improve fuse-element mobility to avoid the delay district to cause material degradation and carbonization so that influence product quality.

In this embodiment, a hand wheel 24 is disposed on the exhaust valve body 20, and a screw rod 231 in threaded fit with the hand wheel 24 is disposed at one end of the exhaust valve core 23 facing away from the exhaust valve seat 171.

In the above structure, the hand wheel 24 drives the screw rod 231 to move axially, thereby controlling the opening and closing of the exhaust valve core 23.

In this embodiment, the valve body 10, the feeding pipe 12, and the discharging pipe 13 are externally covered with the heating jacket 18, the heating interlayer 181 is disposed between the heating jacket 18 and the valve body 10, between the feeding pipe 12, and between the discharging pipe 13, and the heating jacket 18 is provided with the heating medium inlet 182 and the heating medium outlet 183 which are communicated with the heating interlayer 181.

In the above structure, the heat medium flows out from the heat medium outlet 183 after entering the heating interlayer 181 from the heat medium inlet 182, so as to ensure the temperature of the valve body 10, the feeding pipe 12 and the discharging pipe 13 and avoid the influence of the temperature reduction on the fluidity of the melt.

The utility model has the advantages that: the air inlet channel 21 of the exhaust valve body 20 is communicated with one end, close to the valve core 15, of the feed pipe 12, so that air between the feed pipe 12 and the valve core 15 can be exhausted through the exhaust valve body 20 as far as possible, air in an air retention area needs to be exhausted through a large amount of melt scouring due to the fact that too much air is left between the feed pipe 12 and the valve core 15 in the later period is reduced, material waste is reduced, and production cost in the spinning process is saved.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations of the above assumption should also be regarded as the protection scope of the present invention.

Claims

1. An exhaust switching valve characterized in that: the valve comprises two valve bodies which are butted with each other, wherein a valve cavity is formed in each valve body, a feeding pipe communicated with the valve cavity is arranged on the side wall of each valve body, a discharging pipe communicated with each valve cavity is arranged at the butted position of the two valve bodies, a valve core driving mechanism is arranged at one end of each valve body, which is opposite to the butted end, and a valve core which is controlled by the valve core driving mechanism to slide along the axial direction of the valve body is arranged in each valve cavity, so that the valve core is controlled to be switched on; the exhaust valve body comprises an air inlet channel, an air outlet channel and an exhaust valve core used for controlling the on-off of the air inlet channel and the air outlet channel, and the air inlet channel is communicated with the end of one end of the inlet pipe close to the valve core.

2. An exhaust switching valve according to claim 1, characterized in that: the exhaust valve comprises a valve body, and is characterized in that a feed channel communicated with a feed pipe is formed in the valve body, an exhaust channel is formed in the feed channel, the exhaust valve body is welded on the valve body, and the exhaust channel is communicated with an intake channel.

3. An exhaust switching valve according to claim 2, characterized in that: and an exhaust valve seat is arranged on the exhaust passage, and the exhaust valve core is abutted against the exhaust valve seat to seal and cut off the connection and disconnection between the exhaust passage and the exhaust passage.

4. An exhaust switching valve according to claim 3, characterized in that: the end part of the exhaust valve core penetrates through the exhaust valve seat, and the end face of the exhaust valve core is attached to the cylindrical contour of the inner wall of the feed channel.

5. An exhaust switching valve according to claim 1, characterized in that: the exhaust valve is characterized in that a hand wheel is arranged on the exhaust valve body, and a screw rod in threaded fit with the hand wheel is arranged at one end, back to the exhaust valve seat, of the exhaust valve core.

6. An exhaust switching valve according to claim 1, characterized in that: the heating device is characterized in that a heating sleeve is coated outside the valve body, the feeding pipe and the discharging pipe, a heating interlayer is arranged between the heating sleeve and the valve body, between the heating sleeve and the feeding pipe and between the heating sleeve and the discharging pipe, and a heating medium inlet and a heating medium outlet which are communicated with the heating interlayer are formed in the heating sleeve.