阅读说明：本技术 垃圾转运装置和垃圾压缩方法 (Type refuse transferring device and garbage-compressing method ) 是由 程磊 单龙 闫士帅 赵宗宗 朱亚坤 冯岩康 于 2019-09-24 设计创作，主要内容包括：本发明公开一种垃圾转运装置和垃圾压缩方法,垃圾转运装置包括垃圾压缩机和集装箱,垃圾压缩机包括：壳体,包括用于转运垃圾的压缩通道和与压缩通道连通的出口；第一闸门装置,包括设于压缩通道上的可升降的第一闸门,第一闸门用于上升以打开压缩通道和下降以关闭压缩通道；推头,安装于壳体内；推头驱动装置,与推头驱动连接,用于驱动推头移动；集装箱包括：箱体,与壳体可分离连接,包括与壳体的出口连通的垃圾接收口；第二闸门装置,包括设于垃圾接收口处的可升降的第二闸门,第二闸门用于下降以关闭垃圾接收口和上升以打开垃圾接收口,推头沿前进方向移动时将壳体内的垃圾通过压缩通道推至箱体内。(It includes trash compactor and container that the present invention, which discloses a kind of type refuse transferring device and garbage-compressing method, type refuse transferring device, and trash compactor includes: shell, including the pressure channel for transporting rubbish and the outlet being connected to pressure channel；First valve system, including liftable first gate being set on pressure channel, the first gate opens pressure channel and decline for rising to close pressure channel；Push top, is installed in shell；Driving device of having a haircut is used to drive push top movement with push top drive connection；Container includes: cabinet, detachably connectable with shell, the rubbish receiving port including the outlet with shell；Second valve system, including liftable second gate being set at rubbish receiving port, second gate is closed rubbish receiving port for declining and is risen to open rubbish receiving port, and shell intracorporal rubbish is pushed into cabinet by push top when moving along direction of advance by pressure channel.)

1. a kind of type refuse transferring device, including trash compactor and container, which is characterized in that the trash compactor includes:

Shell (1), including the pressure channel for transporting rubbish and the outlet being connected to the pressure channel；

First valve system, including liftable first gate (2) being set on the pressure channel, first gate (2) For rising to open the pressure channel and decline to close the pressure channel；

It has a haircut (3), is installed in the shell (1), it is past for making in the pressure channel along direction of advance and direction of retreat It is multiple mobile；

It has a haircut driving device (4), is drivingly connected with the push top (3), for driving the push top (3) mobile；

The container includes:

Cabinet (5), rubbish receiving port including outlet with the shell (1) detachably connectable with the shell (1)；

Second valve system, including liftable second gate (6) being set at the rubbish receiving port, second gate (6) for declining to close the rubbish receiving port and rise to open the rubbish receiving port, the push top (3) is before described The rubbish in the shell (1) is pushed into the cabinet (5) by the pressure channel when mobile into direction.

2. type refuse transferring device as described in claim 1, which is characterized in that the push top (3) includes being set to along the advance Direction front end for pushing the promotion face (31) of rubbish, the upper end of the promotion face (31) is relative to lower end to before described It is tilted into direction side.

3. type refuse transferring device as claimed in claim 2, which is characterized in that the promotion face (31) is clinoplain.

4. type refuse transferring device as claimed in claim 2, which is characterized in that the top of the push top (3) includes along level side To plane, the plane connects with the upper end of the promotion face (31).

5. the type refuse transferring device as described in Claims 1-4 is any, which is characterized in that

First valve system includes the first gate driving device for driving first gate (2) lifting, and described the One gate (2) includes:

First brake application door body is drivingly connected with first gate driving device；

First tail gates body is located at the free end of first gate (2), is slidably connected with the first brake application door body；

First elastic device is connected between the first brake application door body and the first tail gates body, the lower lock of Xiang Suoshu first Door body, which provides, is intended to the elastic force far from the first brake application door body direction movement.

6. the type refuse transferring device as described in Claims 1-4 is any, which is characterized in that

Second valve system includes the second gate driving device for driving second gate (6) flexible, and described the Two gates (6) include:

Second brake application door body (61) is drivingly connected with second gate driving device；

Second tail gates body (62) is located at the free end of second gate (6), slides and connects with the second brake application door body (61) It connects；

Second elastic device is connected between the second brake application door body (61) and the second tail gates body (62), Xiang Suoshu Second tail gates body (62), which provides, is intended to the elastic force far from the second upper lock gate (61) body direction movement.

7. a kind of garbage-compressing method of type refuse transferring device of application as described in claim 1 to 6 is any, which is characterized in that Include:

First step opens pressure channel and rubbish receiving port；

Second step, push top (3) advance, rubbish are pushed into the cabinet of container；

Third step, including at least circulation primary step a, the step a include: that the first gate (2) drops to the push top (3) Top end surface, push top (3) Xiang Suoshu direction of retreat is moved to the second gate (6) rear, and push top (3) is advanced again, by rubbish It is pushed into container；

Four steps, push top (3) retreats and the second gate (6) decline is to close rubbish receiving port.

8. the garbage-compressing method of type refuse transferring device as claimed in claim 7, which is characterized in that the step a includes institute Push top (3) is stated to when moving along the direction of retreat, top end surface of first gate (2) always with the push top (3) connects Touching.

9. the garbage-compressing method of type refuse transferring device as claimed in claim 7, which is characterized in that the push top (3) includes Set on along the direction of advance front end, for pushing the promotion face (31) of rubbish, the upper end of the promotion face (31) is relative under It holds to away from the direction of advance side and tilts, the step a includes, after the push top (3) is moved to first gate (2) Side is retreated in the push top (3) to before the first gate (2) rear, first gate (2) continue to decline with always with institute The surface for stating push top (3) is kept in contact, and before the push top (3) is advanced again, first gate (2) rises to open compression Channel.

10. the garbage-compressing method of type refuse transferring device as claimed in claim 9, which is characterized in that the push top (3) includes Set on along the direction of advance front end, for pushing the promotion face of rubbish, the upper end in the promotion face is relative to lower end to deviating from Direction of advance side inclination, the four steps include, and is moved to described the along the direction of retreat in the push top (3) Before two gates (6) rear, the second gate (6) decline is contacted with remaining with the surface of the push top (3).

Technical field

The present invention relates to field of garbage disposal, in particular to the rubbish pressure of a kind of type refuse transferring device and type refuse transferring device Contracting method.

Background technique

Trash compactor is the capital equipment of garbage transfer station, its effect is will to collect the rubbish come to carry out receiving pressure Contracting, is fitted into garbage container, is carried away again after filling the container of rubbish.Conventional spam compressor compresses rubbish in filling The push top of rubbish pushes away rubbish as after container in pressure channel, and when push top retreats, the rubbish in push top does not allow easy-clear, together When, since, there are space, which is easy storage rubbish, it is not easy to clear up, collect between push top and pressure channel top When vanning separation, which is easy to overflow from the outlet of pressure channel, pollutes.

Summary of the invention

The purpose of the present invention is to provide a kind of type refuse transferring device, which facilitates trash compactor Pressure channel in rubbish clean out, reduce pollution.

First aspect present invention discloses a kind of type refuse transferring device, including trash compactor and container, the rubbish pressure Contracting machine includes:

Shell, including the pressure channel for transporting rubbish and the outlet being connected to the pressure channel；

First valve system, including liftable first gate being set on the pressure channel, first gate is used In rising to open the pressure channel and decline to close the pressure channel；

Push top, is installed in the shell, reciprocal for making in the pressure channel along direction of advance and direction of retreat It is mobile；

Push top driving device, is drivingly connected with the push top, for driving the push top to move；

The container includes:

Cabinet, rubbish receiving port including outlet with the shell detachably connectable with the shell；

Second valve system, including liftable second gate being set at the rubbish receiving port, second gate For declining to close the rubbish receiving port and rise to open the rubbish receiving port, the push top is along the direction of advance The intracorporal rubbish of the shell is pushed into the cabinet by the pressure channel when mobile.

In some embodiments, the push top includes set on the promotion for being used to push rubbish along the direction of advance front end The upper end in face, the promotion face is tilted relative to lower end to away from the direction of advance side.

In some embodiments, the promotion face is clinoplain.

In some embodiments, the top of the push top includes plane in the horizontal direction, the plane and the promotion The upper end in face connects.

In some embodiments,

First valve system includes the first gate driving device for driving first gate lifting, and described the One gate includes:

First brake application door body is drivingly connected with first gate driving device；

First tail gates body is slidably connected positioned at the free end of first gate with the first brake application door body；

First elastic device is connected between the first brake application door body and the first tail gates body, Xiang Suoshu first Tail gates body, which provides, is intended to the elastic force far from the first brake application door body direction movement.

In some embodiments,

Second valve system includes the second gate driving device for driving second gate flexible, and described the Two gates include:

Second brake application door body is drivingly connected with second gate driving device；

Second tail gates body is slidably connected positioned at the free end of second gate with the second brake application door body；

Second elastic device is connected between the second brake application door body and the second tail gates body, Xiang Suoshu second Tail gates body, which provides, is intended to the elastic force far from the second brake application door body direction movement.

Second aspect of the present invention discloses a kind of garbage-compressing method using the type refuse transferring device, comprising:

First step opens pressure channel and rubbish receiving port；

Second step, push top advance, rubbish are pushed into container；

Third step, including at least circulation primary step a, the step a include: that the first gate drops to the push top Top end surface has a haircut and is moved to the second gate rear to the direction of retreat, and push top is advanced again, and rubbish is pushed into container In cabinet；

Four steps, push top retreats and the decline of the second gate is to close rubbish receiving port.

In some embodiments, the step a includes, described to have a haircut to when moving along the direction of retreat, and described first Gate is contacted with the top end surface of the push top always.

In some embodiments, the push top includes set on the promotion for being used to push rubbish along the direction of advance front end The upper end in face, the promotion face is tilted relative to lower end to away from the direction of advance side, and the step a includes, described to push away Head is moved to first gate rear, and before the push top is retreated to first gate rear, first gate continues Decline is kept in contact with the surface always with the push top, and before the push top is advanced again, first gate rises to beat Open pressure channel.

In some embodiments, the push top includes set on the promotion for being used to push rubbish along the direction of advance front end The upper end in face, the promotion face is tilted relative to lower end to away from the direction of advance side, and the four steps includes, in institute It states before push top is moved to second gate rear along the direction of retreat, the second gate decline is with the table with the push top Face remains contact.

Based on type refuse transferring device provided by the invention, by being set above the push top in the pressure channel of trash compactor Set liftable first gate, and liftable second gate be set on container, push top by garbage-compressing into packaging After case, when retreating, the upper end face that can drop to push top by the first gate pushes away so that the rubbish in push top be scraped After retreating to the first gate rear, the rubbish being scraped and the rubbish above pressure channel can be fallen head, thus Push top can advance again is pushed into rubbish in container, and the rubbish in the pressure channel of trash compactor is cleaned out.

The garbage-compressing method of type refuse transferring device provided by the invention also has corresponding beneficial effect.

By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its Advantage will become apparent.

Detailed description of the invention

The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:

Fig. 1 is that the trash compactor push top of the type refuse transferring device of the embodiment of the present invention starts along direction of advance to container Push structural schematic diagram when rubbish；

Fig. 2 is the structure when trash compactor push top of the type refuse transferring device of the embodiment of the present invention is moved along direction of retreat Schematic diagram；

Fig. 3 is after rubbish is pushed into container again by the trash compactor push top of the type refuse transferring device of the embodiment of the present invention From container exit during structural schematic diagram；

Fig. 4 be this type refuse transferring device shown in Fig. 3 trash compactor push top again by rubbish be pushed into container after from Structural schematic diagram in the further push of container.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Below Description only actually at least one exemplary embodiment be it is illustrative, never as to the present invention and its application or make Any restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise Under every other embodiment obtained, shall fall within the protection scope of the present invention.

Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments It is not limited the scope of the invention up to formula and numerical value.Simultaneously, it should be appreciated that for ease of description, each portion shown in attached drawing The size divided not is to draw according to actual proportionate relationship.For technology, side known to person of ordinary skill in the relevant Method and equipment may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as authorizing explanation A part of book.In shown here and discussion all examples, any occurrence should be construed as merely illustratively, and Not by way of limitation.Therefore, the other examples of exemplary embodiment can have different values.It should also be noted that similar label Similar terms are indicated in following attached drawing with letter, therefore, once it is defined in a certain Xiang Yi attached drawing, then subsequent attached It does not need that it is further discussed in figure.

For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ", " ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction " Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and " in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and And respective explanations are made to the opposite description in space used herein above.

Type refuse transferring device as shown in Figures 1 to 4, including trash compactor and container.Trash compactor includes shell Body 1, the first valve system, push top 3 and push top driving device 4.Shell 1 include pressure channel for transporting rubbish and with compression The outlet of channel connection, shell 1 can include the garbage inlet positioned at 1 top of shell as shown in the figure, and garbage inlet is at funnel Shape also may include the garbage inlet of other shapes in some unshowned embodiments of diagram.Pressure channel is that push top 3 exists By rubbish from the channel that trash compactor is released in shell 1, as shown, the gaps underneath of push top 3 and pressure channel it is smaller or Person's tight, there are certain spaces with pressure channel top for push top 3.First valve system includes rising on pressure channel First gate 2 of drop, the first gate 2 open pressure channel and decline for rising to close pressure channel；First gate position Above push top 3, the first valve system can come for example, by hydraulic cylinder, linear motor, the driving devices such as slider-crank mechanism Realize the raising and lowering of the first gate.

Push top 3 is installed in shell 1, for moving back and forth in pressure channel along direction of advance and direction of retreat；It pushes away First 3 to the close direction of container be direction of advance, and 3 directions far from container of push top are direction of retreat, are had a haircut 3 by along preceding Rubbish is pushed into container into direction is mobile, push top 3 along direction of retreat by moving.3 driving of driving device 4 of having a haircut and push top Connection, for driving push top 3 mobile；Driving device 4 of having a haircut is the device that straight reciprocating may be implemented, and can be slide crank Block mechanism, linear motor etc. include hydraulic cylinder in the example shown, and flexible by the telescopic rod of hydraulic cylinder drives the past of push top 3 It is multiple mobile.

Container includes cabinet 5 and the second valve system.Cabinet 5 and shell 1 are detachably connectable, including with shell 1 go out The rubbish receiving port of mouth connection, cabinet 5 are connected on shell 1 when receiving rubbish from trash compactor, pass through rubbish receiving port Rubbish is received, after container has received rubbish, cabinet 5 is separated with shell 1, and container is carried away, the cabinet 5 of next container It is connect with shell 1, continues to rubbish；Second valve system includes liftable second gate 6 at rubbish receiving port, Second gate 6 is set to the end of cabinet 5, and the second gate 6 is closed rubbish receiving port for declining and risen and connect with opening rubbish It closes up, the rubbish in shell 1 is pushed into cabinet 5 by push top 3 when moving along direction of advance by pressure channel.

Illustrate the type refuse transferring device of the present embodiment with a course of work of type refuse transferring device below.

The cabinet of container 5 is connect with the shell 1 of trash compactor first, the second gate 6, which rises, opens rubbish reception Mouthful, make the outlet of rubbish receiving port and pressure channel, the first gate 2 rises, and opens pressure channel, push top 3 is along level side To forward movement, rubbish is pushed into cabinet 5 by pressure channel, then the first gate 2 drops to the top end surface of push top 3 On (i.e. the upper surface of push top 3), 3 retrogressings of then having a haircut, when push top 3 retreats, a small amount of rubbish for toppling out in cabinet 5 is had a haircut 3 upper surface, which drives, to be retreated, simultaneously because the first gate 2 is contacted with 3 upper surface of having a haircut, the first gate 2 by have a haircut 3 upper table The rubbish in face scrapes, as push top 3 continues to retreat, the rubbish that is scraped by the first gate 2 and above push top 3 with pressure channel The front positioned at the first gate 2 space in rubbish, can with push top 3 retrogressings gradually fall to have a haircut 3 front, push away First 3 retreat to the stopping at the first gate 2, and the first gate 2 is located at the edge of the top end surface of push top 3 at this time, due to first Gate 2 is also located on the top end surface of push top 3, and the rear rubbish of the first gate 2 is stopped by the first gate 2, meanwhile, the first gate Rubbish in the pressure channel in 2 fronts falls under gravity into the front of push top 3 (including the rubbish being scraped and push top 3 first times remained in push top 3 and the rubbish in pressure channel upper space when pushing away rubbish in cabinet 5), push top 3 is again along preceding It is mobile into direction, the rubbish fallen is pushed into cabinet 5, to be located at 3 top of push top and the pressure in 2 front of the first gate The rubbish majority in space is all pushed into cabinet 5 between contracting channel, more clear in the pressure channel in order to make 2 front of the first gate Clean, have a haircut 3 can retreat to close to the first gate 2 again, then readvance, repeatedly recycle.Finally, push top 3 is out of cabinet 5 When exiting, the second gate 6 drops to the upper surface of push top 3, scrapes, pushes away as push top 3 retreats 3 rubbish of upper surface of having a haircut First 3 retreat to the rear of the second gate 6, and rubbish receiving port is closed in the decline of the second gate 6, and push top 3 continues to retreat to the first lock The rear of door 2, the first gate 2 decline, closes pressure channel.

The type refuse transferring device of the present embodiment, can by being arranged above the push top 3 in the pressure channel of trash compactor First gate 2 of lifting, and is arranged liftable second gate 6 on container, push top 3 by garbage-compressing into container Afterwards, when retreating, the upper end face of push top 3 can be dropped to by the first gate 2, so that the rubbish in push top 3 be scraped, pushed away First 3 after retreating to 2 rear of the first gate, and the rubbish being scraped and the rubbish above pressure channel can be fallen, from And push top 3 can advance again by rubbish push-in container, and the rubbish in the pressure channel of trash compactor is cleaned out, The cleaning for helping to maintain trash compactor, the compression for helping to reduce after container disengaging positioned at 2 front of the first gate are logical Rubbish in road reduces the pollution exported to pressure channel.

In some embodiments, as shown in Figures 1 to 4, push top 3 includes being used to push rubbish set on along direction of advance front end The promotion face 31 of rubbish pushes the upper end in face 31 to tilt relative to lower end to away from direction of advance side.Promotion face 31 is located at push top 3 Front end can be inclined as shown plane, and being not shown in some diagrams may be curved inclined surface in embodiment.The setting, Can make push top 3 rubbish is pushed in cabinet 5 complete backed off after random when, reduce due to push top 3 retrogressing and will be in cabinet 5 The drag-out that rubbish is taken out of, meanwhile, when push top 3 is exited, the linkage decline of the second gate 6 can also be made, make the second gate 6 from opening Begin with push top 3 top end surface be kept in contact, be then kept in contact with promotion face 31, push top 3 exit completely cabinet 5 it Before, contact the second gate 6 with the surface of push top 3 always, so that the rubbish being further reduced in cabinet 5 overflows.

In some embodiments, have a haircut 3 top includes plane in the horizontal direction, plane and the upper end phase for pushing face 31 It connects.

In some embodiments, as shown in Figures 1 to 4, the second valve system includes for driving the second gate 6 flexible Second gate driving device, the second gate 6 include the second brake application door body 61, the second tail gates body 62 and the second elastic device.The Two brake application door body 61 and the second gate driving device are drivingly connected；Second tail gates body 62 is located at the free end of the second gate 6, with Second brake application door body 61 is slidably connected, and can be connected by slide rail between the second tail gates body 62 and the second brake application door body 61 It is slidably connected with realizing；Second elastic device is connected between the second brake application door body 61 and the second tail gates body 62, under second Sluice gate body 62, which provides, is intended to the elastic force far from the movement of 62 direction of the second brake application door body.Second elastic device can be compression bullet Spring etc..The setting cooperates relative to lower end to the push top 3 away from the inclined promotion face 31 in direction of advance side with upper end When, in fallback procedures, the second tail gates body 62 can be intended to compression always and push away under the action of the second elastic device for push top 3 First 3 surface, thus when push top 3 retreats, without driving the second gate driving device again, the second tail gates body 62 can with push away First 3 top end surface compresses, and at the promotion face of being transitioned into 31, the second tail gates body 62 can also extend automatically, remain and push away Dynamic face 31 compresses, and until cabinet 5 is exited in push top 3 completely, the second tail gates body 62 closes rubbish receiving port.

In some embodiments, the first valve system includes the first gate driving dress for driving the first gate 2 to go up and down It sets, the first gate 2 includes the first brake application door body, the first tail gates body and the first elastic device.First brake application door body and the first lock 2 driving devices of door are drivingly connected；First tail gates body is located at the free end of the first gate 2, is slidably connected with the first brake application door body； First elastic device is connected between the first brake application door body and the first tail gates body, is intended to the offer of the first tail gates body separate The elastic force of first brake application door body direction movement.The setting can make push top 3 after by rubbish for the first time push-in cabinet 5, retreat Advance again to cabinet 5 to the rear of the second gate 6, when clearing up the rubbish in pressure channel, can retreat to second

A kind of garbage-compressing method using type refuse transferring device is also disclosed in some embodiments, comprising:

First step opens pressure channel and rubbish receiving port；

Second step, push top 3 advance, rubbish are pushed into container；

Third step, including at least circulation primary step a, step a include: the top table that the first gate 2 drops to push top 3 Face, push top 3 are moved to 6 rear of the second gate in the reverse direction, and push top 3 advances again, rubbish is pushed into container；

Four steps, push top 3 retreats and the decline of the second gate 6 is to close rubbish receiving port.

The garbage-compressing method of the present embodiment, step a can be to the rubbish in the pressure channel for being located at 2 front of the first gate It is cleared up, multiple circulation step a, rubbish cleaning can be made more thorough.

In some embodiments, the step a includes, and the push top 3 along the direction of retreat to when moving, and described first Gate 2 is contacted with the top end surface of the push top 3 always.Push top 2 can be moved to the first gate to when moving along direction of retreat 2 rear, completely disengages the first gate 2, and the top end surface of the push top 3 of the present embodiment is contacted with the first gate 2 always, then had a haircut 3 rears for not backing to the first gate 2 stop retreating, since the first gate 2 is contacted with the surface of push top 3 always, thus The rubbish at 2 rear of the first gate can be stopped, reduce rear rubbish to the shadow of the pressure channel in 2 front of the first gate It rings, keeps the cleaning to pressure channel cleaner.

In some embodiments, push top 3 includes, for pushing the promotion face of rubbish, pushing set on along direction of advance front end The upper end in face is tilted relative to lower end to away from direction of advance side, and step a includes that the push top is moved to first gate Rear, before push top 3 is retreated to 2 rear of the first gate, the first gate 2 continues to decline to keep connecing with the surface of push top 3 always Touching, before push top 3 is advanced again, the first gate 2 rises to open pressure channel.

In some embodiments, push top 3 includes, for pushing the promotion face of rubbish, pushing set on along direction of advance front end The upper end in face is tilted relative to lower end to away from direction of advance side, and four steps includes being moved in push top 3 along direction of retreat Before second gate, 6 rear, the decline of the second gate 6 is contacted with remaining with the surface of push top 3.

Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent The present invention is described in detail with reference to preferred embodiments for pipe, it should be understood by those ordinary skilled in the art that: still It can modify to a specific embodiment of the invention or some technical features can be equivalently replaced；Without departing from this hair The spirit of bright technical solution should all cover within the scope of the technical scheme claimed by the invention.