CN206255530U - Feed screw - Google Patents

Abstract

The utility model discloses a kind of feed screw, including casing, feed spool, vane, screw feeding axle is driven by actuator, and casing internal is provided with least one passage of heat parallel to the hand of spiral of feed spool axial direction or vane；Passage of heat is integrally formed setting with feed spool or vane, or is set by connector and feed spool or vane synchronous axial system；Filled with the thermal conducting agent or heat generating member for heating casing inner space in passage of heat, heater is provided with outside casing, heater is connected with passage of heat and the two constitutes the heat conduction loop for supplying thermal conducting agent or heat generating member circulation work, by in casing internal, passage of heat is set, heat contained by thermal conducting agent is conducted to material by casing internal, avoid and exterior space is directly lost to by casing, improve the utilization ratio of the energy；By heating feed spool and vane so that the heating surface area of material is bigger and more uniform, is conducive to quick heated material, improves the efficiency of drying.

Description

Feed screw

Technical field

The utility model is related to a kind of material transfer equipment, more specifically, it relates to a kind of feed screw.

Background technology

Feed screw has transmission stabilization when material is conveyed, and measures the characteristics of facilitating, therefore in material transferring field, Especially powder material transmission field has a wide range of applications.

With continuing to develop for sand material conveying technology, the occasion that many sand material are conveyed now is proposed more to conveying worm Requirement high, it is desirable to can also have other functions while conveying worm can convey material.As patent announcement number is A kind of spiral feeder disclosed in the Chinese patent of CN204787749U, the enclosure of this spiral feeder is provided with can The passage of the caloic that circulates, so that the temperature for improving spiral case makes being heated with hydrophilic sand material inside spiral case Drying.

The drying design of this spiral feeder, because the thermal source dried is located on the housing of spiral feeder, makes The sand material that only must be in contact with shell can just be heated, and the sand material for being in enclosure centre position cannot be added Heat drying.Also, because the directly contact area of casing and sand material is little, i.e., heat transfer area is too small so that the drying of sand material Speed is very slow, and for some sand material transmission speeds, occasion heating effect is not obvious faster.Finally, due to casing adstante febre, position Will partly be transmitted in the heat on casing and be given to outside air, reduce the utilization rate of heat energy.

Utility model content

This low problem of slow, energy utilization rate, the utility model mesh are heated for feed screw in practice Be to propose a kind of feed screw, concrete scheme is as follows：

A kind of feed screw, including casing, feed spool and spiral are arranged at the vane on the screw feeding axle, The screw feeding axle is driven by actuator and rotated, and the casing internal sets parallel to the hand of spiral of feed spool axial direction or vane It is equipped with least one passage of heat；The passage of heat and feed spool or vane are integrally formed setting, or by connector with give Material axle or vane synchronous axial system are set；Filled with thermal conducting agent or the heating for heating casing inner space in the passage of heat Part, is provided with outside the casing for heating the thermal conducting agent or the heater of the energy being provided for the heat generating member, described Heater is connected with the passage of heat and the two constitutes the heat conduction loop for supplying the thermal conducting agent or heat generating member circulation work.

By above-mentioned technical proposal, can be to feed spool and vane in itself, or the two surrounding space is heated, due to Feed spool or vane are arranged at the inside of casing, therefore, the heat produced around feed spool and vane will not be directly by casing It is lost in external environment condition, it is to avoid the waste of heat energy, improves energy utilization rate.Compared to casing, feed spool and vane with The contact area of material is bigger, i.e. material is bigger with the heat transfer area that thermal source can be obtained, and so just improves heat transfer Efficiency, accelerates the speed of drying.

Further, the feed spool and/or vane form the passage of heat in hollow setting.

Above-mentioned technical proposal, directly heats feed spool and/or vane so that the overall structure of feeder is more succinct, and And heating effect is direct.

Further, the passage of heat includes at least one heat-exchange tube set parallel to feed spool or vane.

Above-mentioned technical proposal, the heating to casing internal is realized in the case where feed spool normal work is not influenceed, knot Structure is simple and practical.

Further, leading for space where extending between casing and feed spool is provided with the side wall of the passage of heat Hot fin.

By above-mentioned technical proposal, the contact area of thermal conducting agent and material in casing in passage of heat is increased so that lead The heat of thermal conducting agent can be passed to uniformly and quickly in material in the passage of heat, put forward highly thermally conductive efficiency.

Further, passage of heat inside is filled with thermal conducting agent, and the thermal conducting agent is water or conduction oil, it is described plus Thermal includes that one is arranged at the hot courage for holding the water or conduction oil outside casing, and the hot courage is logical with the heat conduction Road is connected and is internally provided with electric heater, and one is additionally provided between the hot courage and passage of heat for thermal conducting agent press-in to be led The liquid pump of the passage of heat.

By above-mentioned technical proposal, water or conduction oil in hot courage by after electric heater heating by liquid pump be pumped directly into In passage of heat, heat exchange then is carried out by the material in passage of heat and casing, realize the heating, drying to material.By The water or conduction oil of cooling continue to heat in returning to hot courage, so move in circles, and continue efficiently heated material.

Further, the passage of heat inside is filled with thermal conducting agent, and the thermal conducting agent is scorching hot air, the heating dress Put including an air bag, the inside air bag is provided with the electric heating piece for heating air, the inside air bag is provided with for inciting somebody to action Air is pressed into the air pump to passage of heat in air bag.

By above-mentioned technical proposal, make full use of air heats quick, circulate neatly feature, the heat that electric heating piece is produced In amount conduction to passage of heat, then conduct into material, heating is quick, easy to control.

Further, the feed spool two ends are located to be rotated on the section outside casing and are arranged with a connection ring, described Open up fluted on the madial wall of connection ring, closed cavity, the heat conduction are formed between the connection ring and the outer wall of feed spool The two ends of passage are connected with the closed cavity positioned at feed spool both ends respectively；On the heater entrance of thermal conducting agent with Outlet is connected with two closed cavities positioned at feeding shaft end respectively；Axially arranged have along its inside the feed spool two ends Transmission channel, the two ends of the passage of heat are connected with transmission channel respectively, and the transmission channel is located at connection in feed spool Form one on outer wall at ring to be open, the opening is connected with the closed cavity.

By above-mentioned technical proposal so that feed spool thermal conducting agent when rotating remains able to normally input to heat conduction In passage, it is ensured that the normal operation of system.

Further, the passage of heat inside is filled with heat generating member, and the heat generating member includes some heating wire, described to add Thermal includes the switch of break-make between the power supply electrically connected with heating wire and control heating wire and power supply；The feed spool two End is arranged with brush on the section outside casing, and the brush is electrically connected with power supply and heating wire respectively, the electricity Source, brush and heating wire constitute an energization heat production loop.

By above-mentioned technical proposal, the material in casing is heated using heating wire directly, simple and fast.

Further, the casing is provided with the relief hole for stablizing casing internal pressure, is embedded in the relief hole There is the filter screen for preventing material leakage in casing.

Because volume can be expanded after the material and air heats of casing internal, by above-mentioned technical proposal, can keep away Exempt from casing and spalling occurs.

Further, the casing internal is provided with the temperature detector for detection temperature, the temperature detector inspection Survey casing internal temperature of charge and export a temperature detection signal；Control heater heat life is provided with the heater The controller of success rate, the controller is connected with the temperature detector signal, receives and responds to the temperature detection letter The heat production power of number control heater

Above-mentioned technical proposal, by the heat production power for controlling heater, it is possible to achieve the regulation to casing internal temperature, The characteristics of material being conveyed with reference to feed screw accurate quantitative analysis, so that the degree of drying of precise control material.

Compared with prior art, the beneficial effects of the utility model are as follows：

（1）Passage of heat is set by casing internal, the heat contained by thermal conducting agent is conducted to material by casing internal It is central, it is to avoid exterior space is directly lost to by casing, improve the utilization ratio of the energy；

（2）By heating feed spool and vane so that the heating surface area of material is bigger and more uniform, is conducive to quick Heated material, improves the efficiency of drying；

（3）By setting the controller with temperature feedback control in heater so that the temperature in casing is more It is accurate adjustable.

Brief description of the drawings

Fig. 1 is the utility model overall schematic；

Fig. 2 is the local generalized section of the utility model casing；

Fig. 3 is the partial sectional view (using water as thermal conducting agent) of embodiment one；

Fig. 4 is the enlarged diagram in A portions in Fig. 3；

Fig. 5 is the partial sectional view (using air as thermal conducting agent) of embodiment one；

Fig. 6 is passage of heat and the parallel arrangement of schematic diagram of vane in embodiment one；

Fig. 7 is the enlarged diagram in B portions in Fig. 6；

Fig. 8 is the partial sectional view of embodiment two.

Accompanying drawing mark：1st, casing；2nd, feed spool；3rd, vane；4th, motor；5th, passage of heat；6th, heater；7th, heat exchange Pipe；8th, heat transmission fin；9th, water；10th, hot courage；11st, electric heater；12nd, liquid pump；13rd, air；14th, air bag；15th, electric heating piece；16th, gas Pump；17th, connection ring；18th, groove；19th, closed cavity；20th, transmission channel；21st, it is open；22nd, heating wire；23rd, power supply；24th, open Close；25th, brush；26th, relief hole；27th, filter screen；30th, charging aperture；31st, discharging opening；32nd, hopper.

Specific embodiment

With reference to embodiment and figure, the utility model is described in further detail, but embodiment party of the present utility model Formula is not limited only to this.

Embodiment one

As shown in Fig. 1, Fig. 3, Fig. 4, a kind of feed screw, including casing 1, feed spool 2 and spiral are arranged at spiral Vane 3 on feed spool 2.Charging aperture 30 and discharging opening 31 are provided with casing 1, hopper 32 is provided with charging aperture, spiral send Material axle 2 drives rotation by motor 4, and the hand of spiral of the interior parallel of casing 1 in the axial direction of feed spool 2 or vane 3 is provided with least one Bar passage of heat 5.Above-mentioned passage of heat 5 is integrally formed setting with feed spool 2 or vane 3, also or as shown in Figure 6 and Figure 7, leads to Connector is crossed to be set with feed spool 2 or the synchronous axial system of vane 3.Filled with for heating the inner space of casing 1 in passage of heat 5 Thermal conducting agent or heat generating member.It is provided with outside casing 1 for heating thermal conducting agent or the heater 6 of the energy is provided for heat generating member, plus Thermal 6 is connected with passage of heat 5 and the two constitutes heat conduction loop for thermal conducting agent or heat generating member circulation work, thermal conducting agent or The heat of person's heat-conducting piece realizes the heating, drying to the materials inside of casing 1 in the interior circulation of passage of heat 5.

As shown in figure 3, feed spool 2 or vane 3 are in hollow setting, certainly, feed spool 2 and vane 3 can also all into hollow Setting forms passage, and passage of heat 5 is just using above-mentioned passage located at feed spool 2 or the inside of vane 3.When using, thermal conducting agent is straight Connect heating feed spool 2 or vane 3 so that the overall structure of feeder is more succinct, and heating effect is direct.Due to feed spool 2 or vane 3 it is bigger with the contact area of material compared to casing 1 with the contact area of material, therefore material is also obtained in that more Big heating surface (area) (HS, improves the efficiency of heating.

In order to further increase the contact area of thermal conducting agent and material in casing 1 in passage of heat 5 so that passage of heat 5 The heat of interior thermal conducting agent can be passed to uniformly and quickly in material, put forward highly thermally conductive efficiency.Set on the side wall of passage of heat 5 It is equipped with the heat transmission fin 8 in space where extending between casing 1 and feed spool 2.Above-mentioned heat transmission fin 8 is by copper or other heat conduction Metal is made.

Based on the setting of above-mentioned passage of heat 5, for thermal conducting agent, preferably water 9 or conduction oil in the present embodiment.When When the temperature requirement of heating is not high, as shown in figure 3, can be using water 9 as thermal conducting agent.Because the specific heat capacity of water 9 is larger, equally The material that the water 9 of temperature can be heated is more compared to conduction oil.When the temperature of charge for needing heating requires very high, can adopt With conduction oil, conduction oil is generally mineral oil, and the boiling point of mineral oil is significantly larger than water 9, also implies that relative to water 9 as leading Thermit powder, it is flat that the temperature in casing 1 can be heated to a water 9 higher by conduction oil.

When choosing water intaking 9 or conduction oil are used as thermal conducting agent, accordingly, above-mentioned heater 6 is arranged at casing 1 including one The outside hot courage 10 for holding water 9 or conduction oil, hot courage 10 is connected with passage of heat 5 and is internally provided with electric heater 11, one is additionally provided between hot courage 10 and passage of heat 5 is used to be pressed into thermal conducting agent the liquid pump 12 of passage of heat 5.Such scheme In hot courage 10 electric heating tube can be used using the structure for heating similar to 9 machines of drinking-water hot courage 10, electric heater 11.In heating thing During material, water 9 or conduction oil are pumped directly into passage of heat 5 by after the heating of electric heater 11 in hot courage 10 by liquid pump 12 In, heat exchange then is carried out by the material in passage of heat 5 and casing 1, realize the heating, drying to material.Through overcooled Water 9 or conduction oil continue to heat in returning to hot courage 10, so move in circles, and continue efficiently heated material.

For some only need to the material for somewhat heating, certain wind there is also using water 9 or heat-conducting oil heating Danger, such as in transmitting procedure due to vibrations, it is possible to cause water 9 or conduction oil to be revealed, contaminated material.Cause This, also provides a kind of material as thermal conducting agent in the present embodiment, i.e., by the use of air 13 as thermal conducting agent.As shown in figure 5, due to The specific heat capacity of air 13 is told somebody what one's real intentions are, and the speed for heating is quickly, and is circulated very flexibly, also will not be right when it is revealed Material or surrounding enviroment are polluted.Corresponding, according to air 13 as thermal conducting agent, then above-mentioned heater 6 includes One air bag 14, air bag 14 is internally provided with the electric heating piece 15 for heating air 13, and air bag 14 is internally provided with for by air bag Air 13 is pressed into the air pump 16 to passage of heat 5 in 14.Above-mentioned air bag 14 is made of thermal insulation ceramicses material, it is to avoid heat It is lost in extraneous air.Above-mentioned technical proposal, makes full use of air 13 to be heated quickly, and circulate neatly feature, by electric heating piece 15 heats for producing are conducted into passage of heat 5, are then conducted into material, and heating is quick, easy to control.

In order that obtain thermal conducting agent when rotating of feed spool 2 to remain able to normally input into passage of heat 5, it is ensured that The normal operation of system.The two ends of feed spool 2 are located to be rotated on the section outside casing 1 and are arranged with a connection ring 17, connect Fluted 18 are opened up on the madial wall of ring 17, closed cavity 19, passage of heat are formed between connection ring 17 and the outer wall of feed spool 2 5 two ends are connected with the closed cavity 19 positioned at the both ends of feed spool 2 respectively；On heater 6 entrance of thermal conducting agent with go out Mouth is connected with two closed cavities 19 positioned at the end of feed spool 2 respectively；Axially arranged there is biography along its inside the two ends of feed spool 2 Defeated passage 20, the two ends of passage of heat 5 are connected with transmission channel 20 respectively, and transmission channel 20 is located at connection ring in feed spool 2 An opening 21 is formed on outer wall at 17, opening 21 is connected with closed cavity 19.

As shown in Fig. 2 volume can be expanded after being heated due to the material inside casing 1 and air 13, in order to avoid machine There is spalling in shell 1, casing 1 is provided with the relief hole 26 for stablizing the internal pressure of casing 1, relief hole 26 and is embedded with for preventing The filter screen 27 that only material is revealed in casing 1.

Embodiment two

As shown in figure 8, a kind of feed screw, the difference with embodiment one is：The inside of passage of heat 5 is filled with heating Part, heat generating member includes some heating wire 22, and heater 6 includes the power supply 23 electrically connected with heating wire 22 and control heating wire The switch 24 of break-make between 22 and power supply 23；The two ends of feed spool 2 are located on the section outside casing 1 and are arranged with brush 25, electricity Brush 25 is electrically connected with power supply 23 and heating wire 22 respectively, and power supply 23, brush 25 and heating wire 22 constitute an energization heat production and return Road.Above-mentioned technical proposal, is directly heated, simple and fast using heating wire 22 to the material in casing 1.

Embodiment three

A kind of feed screw, the difference with embodiment one is：Casing 1 is internally provided with the temperature for detection temperature Detector, the temperature detector detection materials inside temperature of casing 1 simultaneously exports a temperature detection signal.One is provided with heater 6 Control the controller of the heat generation power of heater 6, controller to be connected with temperature detector signal, receive and respond to temperature Detection signal controls the heat production power of heater 6.In such scheme, multiple temperature detector realities that temperature detector is used It is existing.Controller mainly includes a single-chip microcomputer, and single-chip microcomputer receives said temperature detection signal（If temperature detection signal is analog signal Then need to be changed through A/D and sampled）, it is simplest according to the heat production power for setting output one control signal control heater 6 Method is the size of current for adjusting heater 6, i.e., by the equipment of one power supply of Single-chip Controlling 23 with controlling heater 6 Heat-generating current.Because the feedback control using chip microcontroller temperature has had many disclosures in the prior art, herein just Repeat no more.

Above-mentioned technical proposal is by controlling the heat production power of heater 6, it is possible to achieve to the tune of the internal temperature of casing 1 Section, with reference to the characteristics of feed screw accurate quantitative analysis conveying material, so that the degree of drying of precise control material.

The above is only preferred embodiment of the present utility model, and protection domain of the present utility model is not limited merely to Above-described embodiment, all technical schemes belonged under the utility model thinking belong to protection domain of the present utility model.Should refer to Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and Retouching, these improvements and modifications also should be regarded as protection domain of the present utility model.

Claims (10)

1. a kind of feed screw, including casing (1), feed spool (2) and spiral are arranged on the screw feeding axle (2) Vane (3), the screw feeding axle (2) by actuator drive rotate, it is characterised in that casing (1) interior parallel in The hand of spiral of feed spool (2) axial direction or vane (3) is provided with least one passage of heat (5)；The passage of heat (5) with give Material axle (2) or vane (3) are integrally formed setting, or are set by connector and feed spool (2) or vane (3) synchronous axial system；Institute State filled with the thermal conducting agent or heat generating member for heating casing (1) inner space in passage of heat (5), the casing (1) is outside Be provided with for heating the thermal conducting agent or the heater (6) of the energy being provided for the heat generating member, the heater (6) with The passage of heat (5) is connected and the two constitutes the heat conduction loop for supplying the thermal conducting agent or heat generating member circulation work.

2. feed screw according to claim 1, it is characterised in that during the feed spool (2) and/or vane (3) are in Sky sets and forms the passage of heat (5).

3. feed screw according to claim 1, it is characterised in that the passage of heat (5) is flat including at least one The heat-exchange tube (7) that row is set in feed spool (2) or vane (3).

4. the feed screw according to Claims 2 or 3, it is characterised in that set on the side wall of the passage of heat (5) There is the heat transmission fin (8) in space where extending between casing (1) and feed spool (2).

5. feed screw according to claim 1, it is characterised in that heat conduction is filled with inside the passage of heat (5) Agent, the thermal conducting agent is water (9) or conduction oil, the heater (6) including one be arranged at casing (1) it is outside for containing The hot courage (10) of the water (9) or conduction oil is put, the hot courage (10) is connected and is internally provided with the passage of heat (5) Electric heater (11), is additionally provided with one for thermal conducting agent to be pressed into passage of heat (5) between the hot courage (10) and passage of heat (5) Liquid pump (12).

6. feed screw according to claim 1, it is characterised in that heat conduction is filled with inside the passage of heat (5) Agent, the thermal conducting agent is scorching hot air (13), and the heater (6) includes an air bag (14), is set inside the air bag (14) It is equipped with the electric heating piece (15) for heating air (13), the air bag (14) is internally provided with for by air bag (14) interior air (13) it is pressed into the internal air pump (16) of passage of heat (5).

7. the feed screw according to claim 5 or 6, it is characterised in that feed spool (2) two ends are located at casing (1) rotated on outside section and be arranged with a connection ring (17), open up fluted on the madial wall of the connection ring (17) (18) closed cavity (19), is formed between the connection ring (17) and the outer wall of feed spool (2)；

Distinguish along its axially arranged two ends for having transmission channel (20), the passage of heat (5) inside feed spool (2) two ends It is connected with the transmission channel (20), the transmission channel (20) is in feed spool (2) on the outer wall at connection ring (17) place An opening (21) is formed, the opening (21) is connected with the closed cavity (19)；

On the heater (6) entrance of thermal conducting agent with outlet respectively with two closed cavities positioned at feed spool (2) two ends (19) it is connected.

8. feed screw according to claim 1, it is characterised in that filled with heating inside the passage of heat (5) Part, the heat generating member includes some heating wire (22), and the heater (6) includes the power supply that is electrically connected with heating wire (22) (23) and control heating wire (22) and power supply (23) between break-make switch (24)；Feed spool (2) two ends are located at casing (1) brush (25) is arranged with outside section, the brush (25) is electrically connected with power supply (23) and heating wire (22) respectively Connect, the power supply (23), brush (25) and heating wire (22) constitute an energization heat production loop.

9. the feed screw according to claim 5 or 6 or 8, it is characterised in that the casing (1) is provided with for steady Determine to be embedded with the relief hole (26) of casing (1) internal pressure, the relief hole (26) for preventing the interior material of casing (1) from revealing Filter screen (27).

10. feed screw according to claim 9, it is characterised in that the casing (1) is internally provided with for detecting The temperature detector of temperature, temperature detector detection casing (1) the materials inside temperature simultaneously exports a temperature detection signal；Institute State the controller that control heater (6) heat generation power is provided with heater (6), the controller and the temperature Detector signal is connected, and receives and responds to the heat production power of temperature detection signal control heater (6).