CN211937648U

CN211937648U - High-temperature injection valve

Info

Publication number: CN211937648U
Application number: CN201922428120.2U
Authority: CN
Inventors: 叶炬贤
Original assignee: Tuoyi Lianchuang Technology Shenzhen Co ltd
Current assignee: Tuoyi Lianchuang Technology Shenzhen Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-11-17
Anticipated expiration: 2029-12-27

Abstract

The utility model relates to an injection valve technical field especially relates to a high temperature injection valve, which comprises a valve body, but set up runner and up-and-down motion's firing pin in the valve body, reset spring has been put to the firing pin top, and the below of valve body sets up the nozzle, the nozzle sets up in the below of runner, still is provided with a plurality of sealing members in the valve body, set up a bellows in the valve body, the bellows cup joints on the firing pin. The utility model provides a high temperature injection valve. Simple structure, good sealing performance, safe operation and low cost.

Description

High-temperature injection valve

Technical Field

The utility model relates to an injection valve technical field especially relates to a high temperature injection valve.

Background

At present, the injection valve on the market is mainly applied to the electronic field, and the electronic field is high in operation requirement and various in dispensing environments, so that the use and maintenance of the injection valve are always the most concerned problems of users. With the upgrading of the process of some traditional industries, some processes originally using sewing are gradually replaced by hot melt adhesive bonding in the clothing industry.

Because the hot melt adhesive has the advantages of simple process and convenient operation, the hot melt adhesive has wide application prospect, can be specially designed with specific structures for solving the existing use problems, improves the maintenance performance and solves the problem that customers use the existing injection valves.

The existing injection valve mainly has two schemes of a pneumatic injection valve and a piezoelectric injection valve.

The pneumatic injection valve is an injection mode which has the longest development time and the most stable process, and the principle of the pneumatic injection valve is that a high-speed electromagnetic valve is used for quickly switching a driving air path, so that a firing pin of a driving part of the injection valve quickly moves up and down, and further impacts a nozzle at high frequency to impact glue. The motion principle is shown in figure 1: the valve body 1 is a core component of the injection valve, the valve body 1 is internally provided with the firing pin 2 capable of moving up and down, a plurality of sealing rings 5 are arranged between the valve body 1 and the firing pin 2, a return spring 4 is arranged above the firing pin 2, and an air inlet is arranged below the piston structure of the firing pin 2, so that high-pressure air can enter through the inlet and jack the firing pin. A nozzle 3 is arranged below the valve body 1, and in a closed state, the nozzle 3 and the firing pin 2 can seal glue in the valve body 1. When the firing pin 2 is lifted by high-pressure air, glue can be filled below the firing pin 2, and when the high-pressure air is closed, the firing pin 2 descends at high speed to bump out the glue.

The existing pneumatic injection valve has two defects for the application of hot melt adhesive in the clothing industry: the design and use temperature of a traditional injection valve is generally not too high, the traditional injection valve is generally required to be within 160 ℃, part of core parts even cannot bear the high temperature of more than 80 ℃, even if the traditional injection valve can be used at 160 ℃, the service life of the parts cannot be ensured under the high-temperature and high-frequency working environment, and the service life of core parts such as an electromagnetic valve, a sealing ring, a guide bearing and the like can only be about one week or even shorter from the feedback of part of users at present. This use cost can result in a large number of customers in demand being dissuaded. The service life of such core components at high temperatures and frequencies must be optimized. Second, present pneumatic valve, the general stopper that all uses is sealed, and general stopper is sealed has a dynamic leakage's problem, as long as the firing pin up walk all can have trace glue to leak outside from the gap between general stopper and the firing pin, and it is long-lived, leak leakage quantity and can increase, and the glue that leaks moreover can accumulate, arouses the increase of resistance, lets the unable normal injection of glue. Therefore, in the traditional flooding plug sealing mode, the valve body must be jacked up for maintenance. For the traditional labor-intensive enterprises in the clothing industry, maintenance needs special technicians to handle, and when the number of equipment is large, the maintenance cost of the personnel is also an important resistance to application and popularization.

The piezoelectric injection valve is a glue spraying mode which uses piezoelectric ceramics as power and amplifies displacement through a lever mechanism to ensure that a firing pin obtains enough displacement and power. The biggest problems at present are the following: firstly, the maintenance cost is high, because the core component, piezoceramics pile also belong to a loss piece, need regularly change, and pile replacement cost is high, the cycle length. Other wear parts, like the pneumatic injection valves, require weekly replacement and maintenance. Second, the conventional piezoelectric injection valves are designed for small-spot and thin-line applications. If the stack is popularized to the traditional fields of clothing industry and the like, a larger driving stack is needed, and the service life of the stack is shortened due to the large current and high heat generation.

Disclosure of Invention

The utility model aims to provide a high temperature injection valve, aim at solving present invention mainly to solve the problem that original sealing washer life-span is too short to and under the high temperature condition, the thermal-insulated cooling problem of valve body.

The utility model discloses a realize like this: a high-temperature injection valve comprises a valve body, wherein a flow channel and a firing pin capable of moving up and down are arranged in the valve body, a return spring is arranged above the firing pin, a nozzle is arranged below the valve body and is arranged below the flow channel, a plurality of sealing pieces are further arranged in the valve body, a corrugated pipe is arranged in the valve body, and the corrugated pipe is sleeved on the firing pin.

Preferably, the upper side of the corrugated pipe is of a flange structure, the lower side of the corrugated pipe is of a tubular structure, the middle of the corrugated pipe is of a multi-section wavy tubular structure, the flange side of the corrugated pipe is tightly pressed on the flow channel of the valve body, and the tubular structure of the corrugated pipe is tightly sleeved on the firing pin.

Preferably, a floating guide pad is arranged above the corrugated pipe, a spring is sleeved on the firing pin, and the spring is connected with the floating guide pad.

Preferably, the valve body comprises an upper valve body and a lower valve body, a connecting block is arranged above the flow channel, the upper valve body is arranged above the connecting block, a return spring is further arranged in the upper valve body and connected with the upper end surface of the firing pin, an adjusting head is arranged above the return spring and connected with the upper valve body through threads.

Preferably, the connecting block is of a thin-walled structure.

Preferably, the high-temperature injection valve comprises a heating barrel, the heating barrel is connected with the valve body, the heating barrel comprises a shell, an inner container and heat insulation rings, the heat insulation rings are arranged on two sides of the inner container, and heating and temperature sensing devices are arranged on the inner container.

Adopt the utility model provides a technical scheme, simple structure, convenient to use, it is with low costs, have fine practicality.

Drawings

FIG. 1 is a schematic diagram of a valve body of a prior art injection valve;

fig. 2 is a schematic structural view of a valve body of a high-temperature injection valve provided in an embodiment of the present invention;

fig. 3 is a schematic structural view of a high-temperature injection valve according to another embodiment of the present invention;

fig. 4 is a schematic structural view of a heating barrel of a high-temperature injection valve according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to fig. 1 and an embodiment. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Please refer to fig. 2, fig. 3 and fig. 4. The embodiment of the utility model provides a high temperature injection valve, including the valve body, but set up runner 6 and up-and-down motion's firing pin 2 in the valve body, a bellows 5 cup joints on firing pin 2. A return spring 4 is arranged above the firing pin 2, a nozzle 3 is arranged below the valve body, the nozzle 3 is arranged below the flow channel 6, and a plurality of sealing elements are further arranged in the valve body. The upper side of the corrugated pipe 5 is of a flange structure, the lower side of the corrugated pipe is of a tubular structure, the middle of the corrugated pipe is of a multi-section wavy tubular structure, the flange side of the corrugated pipe 5 is tightly pressed on the flow channel 6, the lower side tubular structure is tightly sleeved on the firing pin 2, when the firing pin moves up and down, the wavy tubular structure of the corrugated pipe 5 stretches along with the firing pin, glue cannot leak to the outside through gaps, and complete sealing is achieved. This sealed mode, before the sealing washer is damaged, need not maintain, can really accomplish non-maintaining, long-time operation.

In consideration of the requirement of the jetting mechanism for guiding, the embodiment does not adopt a fixed guiding shaft for guiding, but adopts a floating guiding pad for guiding. The firing pin 2 is also sleeved with a spring 8, and the spring 8 is connected with a floating type guide pad 7. The floating guide pad 7 is not fixed radially, and after the firing pin 2 is assembled, the firing pin is necessarily fixed at the most central position of the nozzle 3. The floating guide pad 7 is fixed at the most concentric position with the nozzle under the action of the spring, and the best guide effect is obtained.

The utility model provides an in the high temperature injection valve embodiment, 6 tops in the runner set up connecting block 9, go up valve body 10 and set up in the top of connecting block 9, go up and still set up a reset spring 4 in the valve body 10, reset spring 4 connects the up end of firing pin 2, and reset spring 4's top sets up one and adjusts head 11, adjusts head 11 and passes through threaded connection and go up valve body 10. The connecting block 9 is connected by adopting a thin-wall structure, and the thin-wall structure has a good heat dissipation effect. Heat transfer from the flow channel 6 to the upper adjusting head 11 can be effectively prevented. Of course, the adjusting block 9 in the present exemplary embodiment can also be directly replaced by a structural connection using a highly heat-insulating material.

The embodiment of the utility model provides an in, a heating bucket is connected to the valve body, and the heating bucket includes shell 14, inner bag 13, and heat insulating ring 12 is equipped with to inner bag 13 both sides, still sets up heating and temperature sensing device on the inner bag 13. The heating bucket in this embodiment adopts bilayer structure, and in the heating process, the temperature of inner bag 13 can reach more than 150 ℃, and the high temperature of inner bag owing to having blockking of middle air bed, the temperature of shell 14 can be far less than the inner bag, can not scald operating personnel. Compared with other heat insulating materials directly used as the outer layer, the double-layer structure has better heat insulating effect and lower weight.

The embodiment of the utility model provides a biggest characteristics have been overcome in the clothing industry, use the hot melt adhesive to spray use and maintain the problem. Through increasing different thermal-insulated mechanism, reduce the temperature at operation position, make workman's operation safer. The novel sealing structure can ensure that the using process is more stable, glue cannot permeate out, the maintenance can be omitted for a long time, and the novel sealing structure is more suitable for the clothing industry which has lower requirements on workers.

The technical scheme of the utility model, simple structure, convenient to use, the operation is safe, and is with low costs.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A high-temperature injection valve comprises a valve body, wherein a flow channel and a firing pin capable of moving up and down are arranged in the valve body, a return spring is arranged above the firing pin, a nozzle is arranged below the valve body and is arranged below the flow channel, and a plurality of sealing elements are further arranged in the valve body.

2. The high temperature injection valve of claim 1 wherein the bellows has a flange on the top, a tubular structure on the bottom, and a multi-stage corrugated tubular structure in the middle, wherein the flange of the bellows is pressed against the flow path of the valve body, and the tubular structure of the bellows is tightly fitted over the striker.

3. A high temperature injection valve in accordance with claim 1 wherein said bellows is disposed above said bellows

And the firing pin is sleeved with a spring, and the spring is connected with the floating guide pad.

4. The high temperature injection valve of claim 1 wherein said valve body comprises an upper valve body

And the lower valve body, the runner top sets up the connecting block, go up the valve body set up in the top of connecting block, still set up a reset spring in the upper valve body, reset spring connects the up end of firing pin, reset spring's top sets up one and adjusts the head, adjusts the head and passes through threaded connection go up the valve body.

5. The high temperature injection valve of claim 4 wherein the connecting block is a thin-walled structure.

6. The high-temperature injection valve according to any one of claims 1 to 5, wherein the high-temperature injection valve comprises a heating barrel, the heating barrel is connected with the valve body, the heating barrel comprises a shell and an inner container, heat insulation rings are arranged on two sides of the inner container, and heating and temperature sensing devices are arranged on the inner container.