CN219195317U - Negative pressure exhaust device of hosiery machine - Google Patents

Abstract

The utility model discloses a negative pressure exhaust device of a stocking machine, which comprises: a negative pressure fan; a negative pressure main pipe, wherein an air outlet of the negative pressure main pipe is connected with an air inlet of a negative pressure fan; the negative pressure is in charge of, the negative pressure is in charge of and is equipped with a plurality of, and every negative pressure is in charge of and all is equipped with the breather valve, and the gas outlet of every negative pressure is in charge of all is connected with the air inlet of negative pressure house steward, and the air inlet of every negative pressure is in charge of is used for being connected with the gas outlet of single hosiery machine respectively. The negative pressure main pipe and the negative pressure branch pipes are used for connecting the plurality of stocking machines with a single negative pressure fan, so that negative pressure wind power is provided for the plurality of stocking machines through the single negative pressure fan, the number of negative pressure fans in a workshop is reduced, the heat generated in the workshop is reduced, the temperature in the workshop is reduced, and energy conservation and emission reduction are realized; each negative pressure branch pipe is provided with a ventilation valve, so that the corresponding negative pressure branch pipe can be conducted according to the running quantity of the actual stocking machine, and the use is flexible. The utility model has the advantages of reduced energy consumption and less heat dissipation.

Description

Negative pressure exhaust device of hosiery machine

Technical Field

The application relates to the technical field of sock production equipment, in particular to a negative pressure exhaust device of a sock machine.

Background

In the working process of the hosiery machine, the negative pressure fan is usually required to be matched, the hosiery produced by the hosiery machine is pumped away through a pipeline matched with the negative pressure fan, so that the produced hosiery is pumped away from the station and then falls into a finished product collecting frame, and meanwhile, the negative pressure fan is used for adsorbing waste yarns produced in the production process through another pipeline.

In the existing hosiery machine workshop, each hosiery machine is independently provided with a negative pressure fan, or each hosiery machine is independently provided with a negative pressure fan so as to provide negative pressure wind power, and then the wind fed back by each negative pressure fan is sent out through a main pipe. When the negative pressure fans work, heat is generated, and more negative pressure fans work together, so that the temperature in the sock locomotive room is higher, the energy consumption is influenced, and the operation of workers is not facilitated.

Disclosure of Invention

Therefore, a negative pressure air draft device of a stocking machine is needed to solve the problems that in the prior art, each stocking machine is independently provided with a negative pressure fan, so that the temperature in a workshop is high, the energy consumption is high, and the manual operation is not facilitated.

To achieve the above object, the present inventors provide a negative pressure suction device for a hosiery machine, comprising:

a negative pressure fan;

a negative pressure main pipe, wherein an air outlet of the negative pressure main pipe is connected with an air inlet of a negative pressure fan;

the negative pressure is in charge of, the negative pressure is in charge of and is equipped with a plurality of, and every negative pressure is in charge of and all is equipped with the breather valve, and the gas outlet of every negative pressure is in charge of all is connected with the air inlet of negative pressure house steward, and the air inlet of every negative pressure is in charge of is used for being connected with the gas outlet of single hosiery machine respectively.

In some embodiments, further comprising:

the dust removal chamber is provided with an air inlet and an air outlet, the air inlet of the dust removal chamber is connected with the air outlet of the negative pressure main pipe, and the air outlet of the dust removal chamber is connected with the air inlet of the negative pressure fan;

the negative pressure branch pipe comprises a main connecting pipe and two branch pipes, wherein the air outlet of the main connecting pipe is connected with a negative pressure main pipe, the air inlet of the main connecting pipe is connected with the air outlets of the two branch pipes, and the air outlets of the two branch pipes are respectively connected with the air outlets of the sock suction pipes and the air outlets of the dust removal pipes of the sock knitting machine; the vent valve is arranged at the main connecting pipe.

In some embodiments, the air outlets of the two branch pipes are connected with the air inlet of the main pipe through a tee pipe.

In some embodiments, the tapping pipe is connected to the tee through a ferrule, an air inlet end of the ferrule is fixedly connected to an air outlet of the tapping pipe, and an air outlet end of the ferrule is sleeved at an air inlet of the tee.

In some embodiments, the material of the sleeve is flexible, the inner diameter of the air inlet end of the sleeve is smaller than the inner diameter of the air outlet end, and the middle section of the sleeve can be abutted against the end face of the air inlet of the three-way pipe by suction under the action of negative pressure fan air suction.

In some embodiments, the flexible material is a flexible plastic or rubber.

In some embodiments, the dust removing chambers are provided with at least two, the air inlets of the dust removing chambers are connected with the air outlets of the negative pressure main pipe, and the air outlets of the dust removing chambers are connected with the air inlets of the negative pressure fan.

In some embodiments, the air inlet and the air outlet of each dust removing chamber are provided with valves.

In some embodiments, the dust chamber is provided with a purge valve.

In some embodiments, further comprising:

and the controller is connected with the negative pressure fan and the ventilation valve to control the power of the negative pressure fan and the opening or closing of the ventilation valve.

Compared with the prior art, the negative pressure air suction device of the stocking machine has the advantages that the negative pressure main pipe and the negative pressure branch pipes are used for connecting the stocking machines with the single negative pressure fan, negative pressure wind power is provided for the stocking machines through the single negative pressure fan, the number of the negative pressure fans in a workshop is reduced, heat generated in the workshop is reduced, the temperature in the workshop is reduced, energy conservation and emission reduction are realized, and the stocking machines are not required to be pressurized respectively by the negative pressures; in addition, each negative pressure branch pipe is provided with a ventilation valve, so that the corresponding negative pressure branch pipe is conducted and the corresponding negative pressure branch pipe is closed according to the running quantity of the actual stocking machine, and the use is flexible.

The foregoing summary is merely an overview of the present application, and is provided to enable one of ordinary skill in the art to make more clear the present application and to be practiced according to the teachings of the present application and to make more readily understood the above-described and other objects, features and advantages of the present application, as well as by reference to the following detailed description and accompanying drawings.

Drawings

The drawings are only for purposes of illustrating the principles, implementations, applications, features, and effects of the present application and are not to be construed as limiting the application.

In the drawings of the specification:

fig. 1 is a schematic structural view of a negative pressure exhaust device of a stocking machine according to an embodiment;

FIG. 2 is a schematic illustration of a connection of a main tap and a tap according to an embodiment;

FIG. 3 is a block diagram of a ferrule according to an embodiment;

FIG. 4 is an end view of a ferrule according to an embodiment;

FIG. 5 is a side view of an internal connection diagram of a fan case according to an embodiment;

fig. 6 is a front view of an internal connection relationship diagram of a fan case according to an embodiment.

Reference numerals referred to in the above drawings are explained as follows:

1. a negative pressure fan; 100. a fan case;

2. a negative pressure main pipe;

3. a main connecting pipe; 300. a vent valve;

4. a branch pipe;

5. a ferrule; 500. an air inlet end of the ferrule; 501. an outlet end of the ferrule; 502. a middle section of the ferrule;

6. a dust removal chamber; 600. a bleed valve; 601. a self-closing valve; 602. a cylinder; 603. a gate; 604. a filter screen; 605. a cabinet door;

7. a delivery tube;

8. a three-way pipe;

9. a control panel;

10. a stocking machine; 1000. an air outlet of the sock suction; 1001. a dust-removing air outlet;

11. and an air outlet pipe.

Detailed Description

In order to describe the possible application scenarios, technical principles, practical embodiments, and the like of the present application in detail, the following description is made with reference to the specific embodiments and the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples and are not intended to limit the scope of protection of the present application.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of the phrase "in various places in the specification are not necessarily all referring to the same embodiment, nor are they particularly limited to independence or relevance from other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the technical features mentioned in the embodiments may be combined in any manner to form a corresponding implementable technical solution.

Unless defined otherwise, technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application pertains; the use of related terms herein is for the description of specific embodiments only and is not intended to limit the present application.

In the description of the present application, the term "and/or" is a representation for describing a logical relationship between objects, which means that there may be three relationships, e.g., a and/or B, representing: there are three cases, a, B, and both a and B. In addition, the character "/" herein generally indicates that the front-to-back associated object is an "or" logical relationship.

In this application, terms such as "first" and "second" are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual number, order, or sequence of such entities or operations.

Without further limitation, the use of the terms "comprising," "including," "having," or other like terms in this application is intended to cover a non-exclusive inclusion, such that a process, method, or article of manufacture that comprises a list of elements does not include additional elements but may include other elements not expressly listed or inherent to such process, method, or article of manufacture.

As in the understanding of the "examination guideline," the expressions "greater than", "less than", "exceeding", and the like are understood to exclude the present number in this application; the expressions "above", "below", "within" and the like are understood to include this number. Furthermore, in the description of the embodiments of the present application, the meaning of "a plurality of" is two or more (including two), and similarly, the expression "a plurality of" is also to be understood as such, for example, "a plurality of groups", "a plurality of" and the like, unless specifically defined otherwise.

In the description of the embodiments of the present application, spatially relative terms such as "center," "longitudinal," "transverse," "length," "width," "thickness," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counter-clockwise," "axial," "radial," "circumferential," etc., are used herein as terms of orientation or positional relationship based on the specific embodiments or figures, and are merely for convenience of description of the specific embodiments of the present application or ease of understanding of the reader, and do not indicate or imply that the devices or components referred to must have a particular position, a particular orientation, or be configured or operated in a particular orientation, and therefore are not to be construed as limiting of the embodiments of the present application.

Unless specifically stated or limited otherwise, in the description of the embodiments of the present application, the terms "mounted," "connected," "affixed," "disposed," and the like are to be construed broadly. For example, the "connection" may be a fixed connection, a detachable connection, or an integral arrangement; the device can be mechanically connected, electrically connected and communicated; it can be directly connected or indirectly connected through an intermediate medium; which may be a communication between two elements or an interaction between two elements. The specific meanings of the above terms in the embodiments of the present application can be understood by those skilled in the art to which the present application pertains according to the specific circumstances.

In the working process of the stocking machine, the negative pressure fan 1 is usually required to be matched, the stocking produced by the stocking machine is pumped away through the negative pressure fan 1 matched with a pipeline, so that the produced stocking is pumped away from a station and then falls into a finished product collecting frame, and meanwhile, the negative pressure fan 1 also adsorbs waste yarns produced in the production process through another pipeline. In the existing stocking machine workshop, each stocking machine is independently provided with a negative pressure fan 1, or each stocking machine is independently provided with a negative pressure fan so as to provide negative pressure wind power, and then the wind fed back by each negative pressure fan 1 is sent out through a main pipe. The negative pressure fan 1 produces heat during operation, and more negative pressure fans 1 work together, leads to the sock locomotive interior temperature higher, influences the energy consumption and is unfavorable for workman's operation. Therefore, the negative pressure exhaust device of the hosiery machine can reduce heat generated in a workshop, reduce the temperature in the workshop, save energy and reduce emission, and is flexible to use.

Referring to fig. 1, in a specific embodiment, the negative pressure suction device of the stocking machine includes a negative pressure fan 1, a negative pressure main pipe 2, and a negative pressure branch pipe, where the negative pressure fan 1 is used for performing negative pressure suction on a plurality of stocking machines 10 so as to separate socks produced in the plurality of stocking machines 10 from stations, and drop the socks into a finished product collecting frame; the negative pressure main pipe 2 and the negative pressure air pipe are used for connecting a plurality of stocking machines 10 with a single negative pressure fan 1, so that the single negative pressure fan 1 can simultaneously carry out negative pressure air suction on a plurality of stocking machines 10.

The air outlet of the negative pressure main pipe 2 is connected with the air inlet of the negative pressure fan 1; the negative pressure branch pipes are provided with a plurality of negative pressure branch pipes, the air outlet of each negative pressure branch pipe is connected with the air inlet of the negative pressure main pipe 2, the air inlet of each negative pressure branch pipe is respectively used for being connected with the air outlet of the single stocking machine 10, thus negative pressure wind power can be provided for a plurality of stocking machines 10 through the single negative pressure fan 1, the number of the negative pressure fans 1 in a workshop is reduced, the heat generated in the workshop is reduced, the temperature in the workshop is reduced, energy conservation and emission reduction are realized, and a plurality of negative pressures are not needed to respectively pressurize each stocking machine 10.

In addition, each negative pressure branch pipe is provided with a ventilation valve 300, so that the corresponding negative pressure branch pipe can be conducted and the corresponding negative pressure branch pipe can be closed according to the running quantity of the actual stocking machine 10, and the use is flexible.

The suction force can be provided by the negative pressure fan 1 together in the waste suction and dust removal operation of the plurality of hosiery machines 10, so that in some embodiments, the negative pressure suction device of the hosiery machine further comprises a dust chamber 6, and a filter screen 604 is arranged in the dust chamber to prevent waste yarn from entering the fan. The dust chamber 6 is provided with an air inlet and an air outlet, the air inlet of the dust chamber is connected with the air outlet of the negative pressure main pipe, and the air outlet of the dust chamber is connected with the air inlet of the negative pressure fan. Specifically, the air inlet of the dust removal chamber 6 is communicated with the air outlet of the negative pressure main pipe 2 through a conveying pipe 7, and after the waste yarn is extracted from the stocking machine 10, the waste yarn enters the negative pressure main pipe 2 through a negative pressure branch pipe, then enters the conveying pipe 7, and finally falls into the dust removal chamber 6. Referring to fig. 2 and 5, the negative pressure branch pipe includes a main connecting pipe 3 and two tapping pipes 4, wherein an air outlet of the main connecting pipe 3 is connected with the negative pressure main pipe 2, an air inlet of the main connecting pipe 3 is connected with air outlets of the two tapping pipes 4, and air outlets of the two tapping pipes 4 are respectively connected with an air outlet 1000 of a sock suction machine 10 and an air outlet 1001 of dust removal; the vent valve 300 is provided at the main adapter 3. The sock can be simultaneously provided with suction force for sucking socks and waste yarn through the two tapping pipes 4 by a negative pressure fan 1, the socks fall into a finished product collecting frame by a drawing station under the action of suction force, and the waste yarn enters the main tapping pipe 3 through the tapping pipes 4, then enters the negative pressure main pipe 2, then enters the conveying pipe 7 and finally falls into the dust removing chamber 6.

The negative pressure fans 1 need to collect respectively when providing the negative pressure respectively before, are not centralized enough, and it is troublesome to handle the waste yarn, can collect the waste yarn in a centralized way like this, and the waste yarn of a plurality of hosiery machine 10 is retrieved in a centralized way, improves the convenience of recovery processing.

When negative pressure air suction is performed on a plurality of stocking machines 10 at the same time, the work load of waste suction is also large, and the amount of impurities is large, so referring to fig. 6, in some embodiments, the dust chambers 6 are provided with at least two dust chambers, the air inlets of the dust chambers are all connected with the air outlet of the negative pressure main pipe, specifically, the air inlets of the dust chambers are respectively connected with the air outlet of the negative pressure main pipe 2 through the conveying pipe 7, and the air outlets of the dust chambers are all connected with the air inlet of the negative pressure fan. The dust chambers 6 are used for collecting impurities in a concentrated manner, the dust chambers 6 can be opened simultaneously to collect waste yarns together, and the dust chambers 6 can be used alternatively.

In order to be used alternatively to clean waste, in some embodiments, the air inlet and the air outlet of each dust chamber are provided with valves, specifically, the valves at the air inlet of the dust chamber may be self-closing valves 601, the valves at the air outlet of the dust chamber may include gates 603 and a power source, and the power source may be an air cylinder 602, an oil cylinder, a linear motor, etc. to drive the gates 603 to move, so as to close or open the air outlet of the dust chamber. Through the valve of the gas outlet of the control dust chamber to switch or use dust chamber 6 simultaneously, if a plurality of dust chambers 6 switch and use, when the dust chamber 6 that is using gathers full waste yarn, can close the valve of the gas outlet of this dust chamber 6 to open the valve of the gas outlet of another dust chamber 6, then empty the dust chamber 6 that gathers full waste yarn at this moment, can not influence the normal operation of taking out the useless operation again.

Because the negative pressure fan 1 sucks air and then the dust chamber 6 is in a negative pressure state, in order to avoid the waste yarn in the dust chamber 6 from flying around when cleaning the dust chamber 6, in some embodiments, the dust chamber 6 is provided with a release valve 600 (or a pressure release valve), the dust chamber 6 is provided with the release valve 600, when the waste yarn in a certain dust chamber 6 needs to be cleaned, the valve corresponding to the air outlet of the dust chamber 6 is closed, and the release valve 600 is opened, so that the air is supplemented into the dust chamber 6 in the negative pressure state to balance the air pressure, thereby facilitating cleaning operation.

Specifically, the dust collecting chamber 6 is equipped with cabinet door 605, and the dust collecting chamber 6 during operation, cabinet door 605 is in the closed condition, and when need empty dust collecting chamber 6, the valve of the gas outlet of dust collecting chamber is closed, then opens the cabinet door 605 of dust collecting chamber 6 and can carry out the operation of clearing, sets up the bleed valve 600 after, then can open bleed valve 600 earlier before opening the cabinet door 605 of dust collecting chamber 6, can supply air when retrieving it and balance the atmospheric pressure of dust collecting chamber 6, and then conveniently open cabinet door 605 and take out the waste yarn, improves the convenience of retrieving the clearance.

In a further embodiment, the negative pressure fan is arranged in the fan case 100, the dust chamber 6 is also arranged in the fan case 100, and the negative pressure main pipe 2 penetrates into the fan case 100 to be connected with an air inlet of the dust chamber.

The air outlet of the negative pressure fan is connected with an air outlet pipe 11 so as to discharge the extracted air.

In some embodiments, the air outlets of the two tapping pipes 4 are connected with the air inlet of the main connecting pipe 3 through a tee pipe 8, specifically, the tee pipe 8 is in a Y shape, namely a Y-shaped pipe, three ports of the Y-shaped pipe are respectively an air outlet and two air inlets, two air inlets of the Y-shaped pipe are respectively connected with the air outlets of the two tapping pipes 4, one air outlet of the Y-shaped pipe is connected with the air inlet of the main connecting pipe 3, and the structure of the Y-shaped pipe is matched with the structure of the pipe orifice of the tapping pipe 4, so that two pipelines can be conveniently separated out for the hosiery machine 10 to use.

For easy disassembly, referring to fig. 2, 3 and 4, in some embodiments, the tapping pipe 4 is connected to the tee 8 through a sleeve pipe 5, an air inlet end 500 of the sleeve pipe is fixedly connected to an air outlet of the tapping pipe 4, and an air outlet end 501 of the sleeve pipe is sleeved at an air inlet of the tee 8.

The material of the sleeve pipe 5 is flexible, the inner diameter of the air inlet end 500 of the sleeve pipe is smaller than the inner diameter of the air outlet end, the inner diameter of the whole sleeve pipe 5 can be gradually reduced from the air inlet end to the air outlet end, or only the inner diameter of the air inlet end 500 of the sleeve pipe is smaller than the inner diameter of the air outlet end, and the middle section 502 of the sleeve pipe is gradually reduced from the air inlet end to the air outlet end; correspondingly, the inner diameter of the main adapter 3 is larger than the inner diameter of the tapping pipe 4.

Under the suction action of the negative pressure fan 1, the middle section 502 of the sleeve (namely, the part between the two ends of the sleeve 5) can be abutted against the end face of the air inlet of the three-way pipe 8 by suction force, if only the inner diameter of the air inlet end 500 of the sleeve is smaller than the inner diameter of the air outlet end, the middle section 502 of the sleeve gradually reduces from the air inlet end to the air outlet end, the circle with larger inner diameter (namely, the air outlet end 501 of the sleeve) is sleeved at the mouth of the Y-shaped pipe, the circle with smaller inner diameter (namely, the air inlet end 500 of the sleeve) is abutted against the mouth of the tapping pipe 4, and when the negative pressure is pumped, the middle section 502 of the sleeve is abutted against the mouth end face of the Y-shaped pipe by the suction force of the negative pressure to form fixed connection, the sleeve 5 is in a ladder shape, so that the tapping pipe 4 can be fixedly connected with the Y-shaped pipe without the cooperation of bolts or other components, the connection stability is in proportion to the size of the negative pressure, and the larger the negative pressure is, the friction force generated by the abutting is larger, so that the connection is more stable.

Through the ferrule 5, make the installation of branch take over 4 simple stable, ferrule 5 is made and is ladder structural design by flexible material, makes it cup joint in the mouth of pipe department of Y venturi tube directly, with its interference fit to can lock the location along with the reinforcing of negative pressure, need not other parts cooperation, improve convenience and the stability of installation.

In some embodiments, the flexible material is a flexible plastic or rubber.

In some embodiments, the negative pressure suction device of the stocking machine further comprises a controller, and the controller is connected with the negative pressure fan 1 and the ventilation valve 300 to control the power of the negative pressure fan 1 and the opening or closing of the ventilation valve 300. The controller can include control panel 9, sets for the negative pressure of hosiery machine 10 demand through control panel 9, can carry out negative pressure convulsions operation according to hosiery machine 10 that the automatic variable frequency regulation should start up, and the power of negative pressure fan 1 and the number of opening of air current passageway to reduce the energy consumption, rationally regulate and control fan input power.

Finally, it should be noted that, although the foregoing embodiments have been described in the text and the accompanying drawings of the present application, the scope of the patent protection of the present application is not limited thereby. All technical schemes generated by replacing or modifying equivalent structures or equivalent flows based on the essential idea of the application and by utilizing the contents recorded in the text and the drawings of the application, and the technical schemes of the embodiments are directly or indirectly implemented in other related technical fields, and the like, are included in the patent protection scope of the application.

Claims (9)

1. The utility model provides a hosiery machine negative pressure updraft ventilator which characterized in that includes:

a negative pressure fan;

a negative pressure main pipe, wherein an air outlet of the negative pressure main pipe is connected with an air inlet of a negative pressure fan;

the negative pressure branch pipes are provided with a plurality of negative pressure branch pipes, each negative pressure branch pipe is provided with a ventilation valve, the air outlet of each negative pressure branch pipe is connected with the air inlet of the negative pressure main pipe, and the air inlet of each negative pressure branch pipe is respectively connected with the air outlet of the single stocking machine; the negative pressure branch pipe comprises a main connecting pipe and two branch pipes, wherein the air outlet of the main connecting pipe is connected with a negative pressure main pipe, the air inlet of the main connecting pipe is connected with the air outlets of the two branch pipes, and the air outlets of the two branch pipes are respectively connected with the air outlets of the sock suction pipes and the air outlets of the dust removal pipes of the sock knitting machine; the ventilation valve is arranged at the main connecting pipe;

the dust removal chamber is provided with an air inlet and an air outlet, the air inlet of the dust removal chamber is connected with the air outlet of the negative pressure main pipe, and the air outlet of the dust removal chamber is connected with the air inlet of the negative pressure fan.

2. The negative pressure exhaust device of the hosiery machine according to claim 1, wherein the air outlets of the two branch pipes are connected with the air inlet of the main pipe through a three-way pipe.

3. The negative pressure exhaust device of the hosiery machine according to claim 2, wherein the tapping pipe is connected with the three-way pipe through a sleeve pipe, an air inlet end of the sleeve pipe is fixedly connected with an air outlet of the tapping pipe, and an air outlet end of the sleeve pipe is sleeved at an air inlet of the three-way pipe.

4. The negative pressure exhaust device of the hosiery machine according to claim 3, wherein the material of the sleeve pipe is flexible, the inner diameter of the air inlet end of the sleeve pipe is smaller than the inner diameter of the air outlet end, and the middle section of the sleeve pipe can be abutted against the end face of the air inlet of the three-way pipe by suction force under the suction action of the negative pressure fan.

5. The negative pressure exhaust device of the hosiery machine according to claim 4, wherein the flexible material is flexible plastic or rubber.

6. The negative pressure exhaust device of the hosiery machine according to claim 1, wherein at least two dust chambers are arranged, the air inlet of each dust chamber is connected with the air outlet of the negative pressure main pipe, and the air outlet of each dust chamber is connected with the air inlet of the negative pressure fan.

7. The negative pressure exhaust device of the hosiery machine according to claim 6, wherein the air inlet and the air outlet of each dust removing chamber are provided with valves.

8. The negative pressure suction device of a stocking machine according to claim 7, wherein the dust removing chamber is provided with a release valve.

9. The negative pressure suction device of a hosiery machine according to claim 1, characterized by further comprising:

and the controller is connected with the negative pressure fan and the ventilation valve to control the power of the negative pressure fan and the opening or closing of the ventilation valve.

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