CN212608118U

CN212608118U - Negative pressure feeding device

Info

Publication number: CN212608118U
Application number: CN202021340270.4U
Authority: CN
Inventors: 姚春林; 刘海成
Original assignee: BEIJING YANSHAN FUNKEN PRECISION MACHINERY CO LTD
Current assignee: BEIJING YANSHAN FUNKEN PRECISION MACHINERY CO LTD
Priority date: 2020-07-09
Filing date: 2020-07-09
Publication date: 2021-02-26
Anticipated expiration: 2030-07-09

Abstract

The embodiment of the utility model relates to material feeding equipment technical field specifically discloses a negative pressure feeding device, be equipped with the charge door on the lateral wall of reinforced barrel, charge door department is equipped with reinforced control valve, the top of reinforced barrel is equipped with the negative pressure gas vent, negative pressure gas vent department is equipped with negative pressure air current control valve, the bottom of reinforced barrel is equipped with the discharge opening, discharge opening department is equipped with the discharge valve, and connect the feed bin that the bottom side of reinforced barrel set up, the inside of reinforced barrel is equipped with material gas separator, material gas separator with be equipped with the blowback device between the negative pressure gas vent, through setting up the blowback device, the blowback device acts on the filter with higher speed through outside gas, blows adsorbed material off, negative pressure equipment can last high-efficient operation when guaranteeing to feed in material once more to avoid the waste of.

Description

Negative pressure feeding device

Technical Field

The embodiment of the utility model provides a relate to material feeding equipment technical field, concretely relates to negative pressure feeding device.

Background

The negative pressure feeding equipment is widely applied to production work of material addition, adopts a working mode of negative pressure feeding, and particularly for light materials, can save a lot of material conveying facilities and improve feeding efficiency.

The existing feeder can only be used for feeding powder or granules generally, and can not be used for feeding multiple materials, due to the complexity of production working conditions, the existing powder of a production device and the materials mixed by the granules or the powder granules are difficult to meet the feeding requirement of single feeding equipment, the feeding device is arranged more and more complicated, the efficiency is low, the investment is large, and the environmental influence is large.

In addition, in the existing negative pressure feeding device, for example, the chinese utility model patent with a powder feeding negative pressure device publication number CN206466726U discloses a negative pressure device and a vacuum cavity; the vacuum cavity is arranged to be cylindrical at the upper part and has an inverted cone frustum structure at the lower part, a feed inlet is formed above the vacuum cavity, and a discharge outlet is formed at the bottom of the inverted cone frustum structure of the vacuum cavity; the negative pressure equipment is arranged at the top of the vacuum cavity and comprises a negative pressure fan and a filter screen, the negative pressure fan comprises an exhaust port and an air suction port, the negative pressure fan is arranged at the top of the vacuum cavity in a mode that the exhaust port faces outwards, and the negative pressure fan is communicated with the vacuum cavity; and a filter screen is arranged at the air suction port. Although the negative pressure adding process of the powder can be realized, the powder is easy to accumulate on the filter screen in the feeding process under the action of the negative pressure, the negative pressure feeding efficiency is directly influenced, and the adsorbed powder cannot be cleaned in time, so that the waste is caused.

SUMMERY OF THE UTILITY MODEL

Therefore, the embodiment of the utility model provides a negative pressure feeding device to solve among the prior art because the material adsorbs on the filter screen difficult problem that the feeding efficiency that leads to descends and the material is extravagant with the clearance.

In order to realize the purpose that the material attached to on the filter screen is cleared up more easily and is improved feeding efficiency, the utility model discloses an embodiment provides following technical scheme:

the utility model discloses an in the first aspect of embodiment, a negative pressure feeding device is provided, including reinforced barrel, be equipped with the charge door on the lateral wall of reinforced barrel, charge door department is equipped with reinforced control valve, the top of reinforced barrel is equipped with the negative pressure gas vent, negative pressure gas vent department is equipped with the negative pressure air current control valve, the bottom of reinforced barrel is equipped with the discharge opening, discharge opening department is equipped with the discharge valve, and connect the feed bin that the bottom side of reinforced barrel set up, the inside of reinforced barrel is equipped with material gas separator, material gas separator with be equipped with the blowback device between the negative pressure gas vent, the blowback air current that blowback device got into corresponds material gas separator.

Further, the blowback device is including fixing mount in the feeding barrel, be equipped with annular equal trachea on the mount, be equipped with the intercommunication on the equal trachea the outside intake pipe of feeding barrel, be equipped with a plurality of blowbacks on the equal trachea.

Furthermore, a back-blowing electromagnetic valve is arranged at the end part of the air inlet pipe and at the position outside the charging cylinder, and the back-blowing openings are venturi tubes and are uniformly distributed at the bottom side of the air equalizing pipe.

Furthermore, a weighing sensor is arranged in the storage bin, and the weighing sensor is interlocked with the feeding control valve, the negative pressure airflow control valve, the discharge valve and the back flushing electromagnetic valve.

Further, the material-gas separator comprises a flower plate fixed on the inner wall of the charging cylinder, a cylindrical filter is arranged at an opening in the middle of the flower plate, the outer edge of the filter is buckled at the opening, and a sealing ring is arranged between the outer edge and the opening.

Furthermore, a plurality of through holes are formed in the periphery of the opening on the pattern plate, and filter screens are arranged in the through holes.

Furthermore, an air equalizing pipe of the back blowing device and the pattern plate are arranged on a concentric shaft, and an outlet of the venturi corresponds to the through hole.

Further, the inside of reinforced barrel is equipped with the draft tube, the draft tube sets up the last structure position department of charge door, and be located the bottom of filter.

Furthermore, the guide shell is of an inverted conical structure, and the downwardly extending caliber of the end part connected with the guide shell gradually decreases.

Furthermore, a vibration device is arranged on the outer wall of the charging barrel body and is arranged at a position close to the discharge valve.

According to the utility model discloses an embodiment, this technical scheme has following advantage:

1. the utility model discloses an among the negative pressure feeding device, be equipped with the charge door on the lateral wall of feeding barrel, charge door department is equipped with feeding control valve, the top of feeding barrel is equipped with the negative pressure gas vent, negative pressure gas vent department is equipped with negative pressure air current control valve, the bottom of feeding barrel is equipped with the discharge opening, discharge opening department is equipped with the discharge valve, and connect the feed bin that the bottom side of feeding barrel set up, the inside of feeding barrel is equipped with material gas separator, material gas separator and be equipped with the blowback device between the negative pressure gas vent, through setting up the blowback device, the blowback device accelerates the action on the filter through the outside gas, blows off the adsorbed material, ensures that negative pressure equipment can last high-efficient operation when feeding once more, and avoids;

2. the utility model discloses an among the negative pressure feeding device, its inside draft tube that sets up, the draft tube sets up the last structure position department of charge door, and be located the bottom of filter, the draft tube can directly block the high-speed operation of material that the feed inlet got into, perhaps directly by the fast flow to filter, it can block most material and upwelling, and directly fall into the bottom of reinforced barrel, the material of avoiding the feed inlet to gush fast simultaneously leads to filter effect to reduce to when the high efficiency of guarantee material adds, reduce the maintenance cost of equipment.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is a schematic view of an internal structure of a negative pressure feeding device provided in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a back-blowing device in the negative pressure feeding device provided by the embodiment of the present invention;

fig. 3 is a bottom view of the gas equalizing pipe in the negative pressure feeding device provided by the embodiment of the present invention;

fig. 4 is a schematic structural view of a pattern plate in the negative pressure feeding device provided by the embodiment of the present invention;

fig. 5 is a schematic view of a partial cross-sectional structure of a material-gas separator in the negative pressure feeding device provided by the embodiment of the present invention;

fig. 6 is an enlarged view of the structure at I in fig. 5.

In the figure: 1. a charging barrel; 2. a feed inlet; 3. a negative pressure exhaust port; 4. a discharge opening; 5. a charging control valve; 6. a negative pressure airflow control valve; 7. a discharge valve; 8. a storage bin; 9. a material-gas separator; 901. a pattern plate; 902. an opening; 903. a filter; 904. a seal ring; 905. a through hole; 906. filtering with a screen; 10. a back flushing device; 101. a fixed mount; 102. a gas homogenizing pipe; 103. an air inlet pipe; 104. a back flushing port; 11. a back-flushing electromagnetic valve; 12. a draft tube; 13. a vibration device; 14. and a weighing sensor.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are also considered to be the scope of the present invention without substantial changes in the technical content.

As shown in fig. 1, it shows the utility model provides a negative pressure feeding device, including reinforced barrel 1, be equipped with charge door 2 on the lateral wall of reinforced barrel 1, charge door 2 department is equipped with feeding control valve 5, the top of reinforced barrel 1 is equipped with negative pressure gas vent 3, negative pressure gas vent 3 department is equipped with negative pressure air current control valve 6, the bottom of reinforced barrel 1 is equipped with discharge opening 4, discharge opening 4 department is equipped with discharge valve 7, and connect the discharge valve 8 of the bottom side setting of reinforced barrel 1, the inside of reinforced barrel 1 is equipped with material gas separator 9, be equipped with blowback device 10 between material gas separator 9 and the negative pressure gas vent 3, the blowback air current that blowback device 10 got into corresponds material gas separator 9.

The utility model discloses an among the negative pressure feeding device, through setting up blowback device 10, blowback device 10 utilizes outside air current to act on filter 903 with higher speed, blows off absorbent material, and negative pressure equipment can last high-efficient operation when guaranteeing reinforced material once more to avoid the waste of material.

As shown in fig. 2 and 3, the back-blowing device 10 includes a fixing frame 101 fixed in the charging barrel 1, an annular air equalizing pipe 102 is arranged on the fixing frame 101, an air inlet pipe 103 communicated with the outside of the charging barrel 1 is arranged on the air equalizing pipe 102, a plurality of back-blowing ports 104 are arranged on the air equalizing pipe 102, one side of each back-blowing port 104 faces to the direction of the material-gas separator 9, staggered communicating pipes can be arranged in the air equalizing pipe 102, the inside of the air equalizing pipe 102 can be filled with air flow more quickly, and the flow rate of the air flow flowing through each back-blowing port 104 is ensured.

Wherein, the end of the air inlet pipe 103 and the position outside the charging barrel 1 are provided with a back-blowing electromagnetic valve 11, the back-blowing openings 104 are venturis which are uniformly distributed at the bottom side of the air equalizing pipe 102, the high-speed airflow induces the secondary air which is 5-8 times of the blowing compressed air to enter the filter 903 when passing through the venturis, so that the filter 903 rapidly expands instantly, and the dust accumulated on the filter 903 falls off due to the reverse action of the airflow. The venturi tube greatly improves the blowing strength and effect of the pulse electromagnetic valve and reduces the consumption of compressed air.

Be equipped with weighing sensor 14 in the discharge valve 8, weighing sensor 14 and feeding control valve 5, negative pressure air current control valve 6, interlock between discharge valve 7 and the blowback solenoid valve 11, after weighing sensor 14 reached the single material volume of using in the survey hopper material weight, with feeding control valve 5, negative pressure air current control valve 6, chain reaction between discharge valve 7 and the blowback solenoid valve 11, close feeding control valve 5, negative pressure air current control valve 6, open blowback solenoid valve 11, carry out the blowback to material gas separator 9, after the blowback process, open discharge valve 7 and arrange the material, realize the automatic control process.

As shown in fig. 4, 5 and 6, the material-gas separator 9 includes a flower plate 901 fixed on the inner wall of the charging cylinder 1, a cylindrical filter 903 is disposed at a middle opening 902 of the flower plate 901, an outer edge of the filter 903 is snapped at the opening 902, a sealing ring 904 is disposed between the outer edge and the opening 902, the filter 903 is made of stainless steel or titanium alloy sintered microporous material according to the product requirements, the sanitary and clean requirements of the product and the environment-friendly requirements of gas discharge can be met, the charging and conveying requirements of powder, granule or powder-particle mixture can be met, and the filter 903 can be used singly or in combination according to the characteristics of the material and the charging capacity.

In the preferred embodiment of the above structure, a plurality of through holes 905 are formed in the periphery of the opening 902 of the card 901, a filter screen 906 is disposed in the through holes 905, which can increase the negative pressure suction efficiency, thereby improving the feeding efficiency, and the filter screen 906 is also made of a stainless steel or titanium alloy sintered microporous material.

The air equalizing pipe 102 of the back-blowing device 10 and the perforated plate 901 are coaxially located, and the outlet of the venturi corresponds to the through hole 905, so that the venturi can blow off the material on the filter screen 906 in the back-blowing process.

In another concrete implementation structure, the inside of reinforced barrel 1 is equipped with draft tube 12, draft tube 12 sets up the last structure position department at charge door 2, and the bottom draft tube 12 that is located filter 903 can directly block the high-speed operation of the material that the feed inlet got into, perhaps directly by quick flow to filter 903, it can block most material and upwelling, and directly fall into the bottom of reinforced barrel 1, avoid the material that the feed inlet gushed fast to directly assault filter 903 and lead to filter 903 filter effect to reduce simultaneously, thereby when the high efficiency of guarantee material adds, reduce the equipment maintenance cost.

Wherein, draft tube 12 is the awl tube-shaped structure of inversion, and its tip downwardly extending bore of being connected with draft tube 12 body diminishes gradually, and draft tube 12 that the big end opening is little down can avoid more materials to be adsorbed on filter 903 under the negative pressure effect, and then improves charging efficiency, also can reduce the operating time of blowback device 10 simultaneously, shortens the time interval of periodic operation.

Among the foretell feeding device, be equipped with vibrator 13 on the outer wall of feeding barrel 1, vibrator 13 sets up on the position that is close to discharge valve 7, and vibrator 13 can shake the long-pending material on the 1 inner wall of feeding barrel, avoids the blanking to pile up, influences the actual addition of blanking.

The utility model discloses a negative pressure charging means during operation, reinforced control valve 5 is opened, discharge valve 7 is closed, negative pressure air current control valve 6 is opened to time delay 1S, the system negative pressure risees the material gradually and is attracted and carry in reinforced barrel 1, in draft tube 12 effect part whereabouts gets into the district that gathers materials when process draft tube 12, the regional part of the upside of discharge valve 7 promptly, other material gas-liquid mixture flows and is taken into material gas separator by the negative pressure stream, accomplish the separation of material and air current in material gas separator 9, the material falls into the district that gathers materials, the air current filters through filter 903 and gets into the negative pressure pipeline and is discharged by the vacuum pump, according to operating mode needs, pressure and the flow through negative pressure in the control system, the solid-gas ratio of carrying the material in the adjustment conveying pipeline, in order to adapt to carry the powder, the.

And (3) closing the negative pressure airflow control valve 6 and the feeding control valve 5 after the feeding period is finished, starting the back-blowing electromagnetic valve 11 to blow compressed air to back-blow the material-gas separator 9, removing the materials adsorbed on the surface of the filter 903, opening the discharge valve 7 after the back-blowing is finished, discharging the materials in the material collection area, and starting the vibrator to clean the material collection area if the materials have stronger adsorbability.

Completing a feeding period and entering the next cycle period. And stopping feeding when a high material level or weighing signal of the discharge valve 8 is obtained, and executing the operation of the feeder according to the program of the controller to realize unmanned operation.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The utility model provides a negative pressure feeding device, includes reinforced barrel, its characterized in that, be equipped with the charge door on the lateral wall of reinforced barrel, charge door department is equipped with reinforced control valve, the top of reinforced barrel is equipped with the negative pressure gas vent, negative pressure gas vent department is equipped with negative pressure air current control valve, the bottom of reinforced barrel is equipped with the discharge opening, discharge opening department is equipped with the discharge valve, and connect the feed bin that the bottom side of reinforced barrel set up, the inside of reinforced barrel is equipped with material gas separator, material gas separator with be equipped with the blowback device between the negative pressure gas vent, the blowback air current that the blowback device got into corresponds material gas separator.

2. The negative pressure charging device according to claim 1, wherein the back-blowing device comprises a fixing frame fixed in the charging barrel, the fixing frame is provided with an annular gas equalizing pipe, the gas equalizing pipe is provided with a gas inlet pipe communicated with the outside of the charging barrel, and the gas equalizing pipe is provided with a plurality of back-blowing openings.

3. The negative pressure charging device as claimed in claim 2, wherein a back-blowing electromagnetic valve is disposed at the end of the air inlet pipe and at a position outside the charging barrel, and the back-blowing openings are venturis uniformly distributed at the bottom side of the air equalizing pipe.

4. The negative pressure charging device according to claim 3, wherein a weighing sensor is arranged in the storage bin, and the weighing sensor is interlocked with the charging control valve, the negative pressure airflow control valve, the discharge valve and the back-blowing electromagnetic valve.

5. The negative pressure charging device as claimed in claim 3, wherein the gas separator comprises a flower plate fixed on the inner wall of the charging cylinder, a cylindrical filter is arranged at the middle opening of the flower plate, the outer edge of the filter is buckled at the opening, and a sealing ring is arranged between the outer edge and the opening.

6. The negative pressure charging device according to claim 5, wherein a plurality of through holes are provided in the faceplate on the periphery of the opening, and a filter screen is provided in the through holes.

7. The negative pressure charging device as claimed in claim 6, wherein the gas equalizing pipe of the back-blowing device and the faceplate are coaxially arranged, and the outlet of the back-blowing port corresponds to the through hole.

8. The negative pressure charging device according to claim 1, wherein a guide cylinder is arranged inside the charging cylinder body, and the guide cylinder is arranged at the upper structure position of the charging opening and is positioned at the bottom of the filter.

9. The negative pressure charging device according to claim 8, wherein the guide shell is an inverted conical shell structure, and the downwardly extending diameter of the end connected with the guide shell body is gradually reduced.

10. The negative pressure charging device according to claim 1, wherein a vibration device is provided on an outer wall of the charging barrel, the vibration device being disposed at a position adjacent to the discharge valve.