CN208773812U - Dust-full pressure release prompt component and bench saw - Google Patents
Dust-full pressure release prompt component and bench saw Download PDFInfo
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- CN208773812U CN208773812U CN201820391016.3U CN201820391016U CN208773812U CN 208773812 U CN208773812 U CN 208773812U CN 201820391016 U CN201820391016 U CN 201820391016U CN 208773812 U CN208773812 U CN 208773812U
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- pressure release
- dust
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Abstract
The utility model discloses a kind of dust-full pressure release prompt component and bench saws, the dust-full pressure release prompts component, including the pressure relief mechanism being mounted on negative pressure box and pressure release tip parts, pressure relief mechanism includes pressure release frame, pressure release bar and compressed spring, and the pressure release frame is tubular structure open at one end, and pressure release frame is fixed on negative pressure box, relief hole is provided on the negative pressure box, the open end of pressure release frame is connected to relief hole, and pressure release bar is equipped in pressure release frame, compressed spring is arranged between pressure release bar and pressure release frame；Flowing hole is provided on the pressure release bar or pressure release frame；Become larger on the outside of the negative pressure box with inside pressure difference, pushes pressure release bar, compressed spring mobile to negative pressure box side, relief hole is connected to negative pressure box cavity by flowing hole and carries out pressure release；When pressure release, the pressure release tip parts work.By pressure relief mechanism and pressure release tip parts, solve the problems, such as to cause dust sucting motor air inlet to reduce after dust is filled with, automatic prompt carries out dust cleaning, is easy to use and manages.
Description
Technical field
The utility model relates to field of power tools more particularly to a kind of dust-full pressure release prompt components and bench saw.
Background technique
Bench saw has been widely used in building, machinery adds as process equipments such as a kind of very important timber, profiles
Work, Furniture manufacturing, in decorations industry, from structure for bench saw comprising have the power of saw blade, driving saw blade rotation
System and workbench for placing material.
Existing common bench saw, due to that can generate a large amount of dusts during cutting processing, on the one hand dust is easy to drift
In air, adverse effect can be generated to operator's health；On the other hand, the dust generated in process is scattered wantonly,
Cleaning trouble and easy initiation secondary pollution, therefore, the dustless bench saw of realization dedusting just comes into being while cutting processing.
Although with the dustless bench saw of dedusting function, the purpose of dust debris removal can be realized while cutting processing, but not
By being external or built-in dust bag, it can all increase corresponding resistance after dust collecting is more, dust sucting motor is caused to act on
It reduces, power consumption increases.In the case where especially for built-in dust bag, due to air inlet and the setting dust bag of dust sucting motor
Space is closed structure, as dust increases in dust bag, the gas permeability of dust bag worse and worse, to dust sucting motor provide into
Gas is reduced, and dust sucting motor cannot cool down well, is easy to burn dust sucting motor.In addition to this, existing dustless bench saw does not have yet
Prompt facility after dust-full can only carry out the cleaning works such as dust bag according to the experience and observation of operator, or timing, no
It is easy to use and manages.
Before applicant disclosed (204221894 U of Authorization Notice No. CN) " a kind of structure improved bench saw ", including iron
Deck plate is installed under casing, dust suction subassembly, iron under casing upper end, and deck plate is equipped with saw blade, installs saw blade driving group inside iron under casing
Part, saw blade driving assembly include motor, closed enclosure, connecting plate for electric motor, and motor, closed enclosure are installed in connecting plate for electric motor respectively, electricity
Machine connecting plate installs the central axis of two faces arrangement；Iron under casing corresponds to connecting plate for electric motor installing angle of saw blade and adjusts component.Work
When making, motor driven saw blade is rotated to complete wood cutting；Component, which is adjusted, by angle of saw blade rotatably adjusts connecting plate for electric motor
Angle, and then realize and the cutting angle of saw blade is adjusted, special angle is cut so that the utility model can satisfy
The needs of processing；Collection assembly of dust when can be to saw blade cuts timber generated sawdust carry out concentrate storage processing.
For another example " a kind of dustless multifunctional cutting machine " that Chinese patent (application publication number CN107009455A) discloses, packet
Include worktable panel, the carrying cabinet of worktable panel, the rod assembly being set to above worktable panel, frame and including cutting
Cutting assembly including cutting blade and the motor of driving cutting blade rotation, at the same be included in motor output shaft end and cutting sheet it
Between be provided with the self-dust-suction component of spiral case and dust suction fan blade, spiral case includes dust suction inlet and dust outlet, rod assembly packet
Include pull rod fixing seat and sliding sleeve frame, frame is connected by frame rotating seat with sliding sleeve frame, frame utilize sliding sleeve frame pass through pull rod into
Row is moved forward and backward, and Multifunction dustless cutting machine includes that platform is cut, chamfer and three functions of self-dust-suction.One kind disclosed by the utility model
Dustless multifunctional cutting machine structure integrates bench saw, self-dust-suction and pull rod diagonal cutting saw, and structure is simple, and cutting-rate is high, and from
Band dust-absorbing function.The physical and mental health of operator and the health of operating environment are ensured.
Above-mentioned bench saw does not have dust-full pressure release prompt facility, thus, it has not been convenient to it uses and manages, influence dust collection efficiency.
Utility model content
The utility model provides a kind of dust-full pressure release prompt component and bench saw, for solving in the prior art, dustless bench saw
The problem of causing dust sucting motor failure is easy after dust-full.
In order to realize the purpose of this utility model, using following technical scheme:
Dust-full pressure release prompts component, including the pressure relief mechanism being mounted on negative pressure box and pressure release tip parts, pressure relief mechanism
Including pressure release frame, pressure release bar and compressed spring, the pressure release frame is tubular structure open at one end, and pressure release frame is fixed on negative pressure box
On, relief hole is provided on the negative pressure box, the open end of pressure release frame is connected to relief hole, and pressure release bar, pressure release are equipped in pressure release frame
Compressed spring is set between bar and pressure release frame；Flowing hole is provided on the pressure release bar or pressure release frame；On the outside of the negative pressure box
Become larger with inside pressure difference, pushes pressure release bar, compressed spring mobile to negative pressure box side, relief hole passes through in flowing hole and negative pressure box
Chamber connection carries out pressure release；When pressure release, the pressure release tip parts work.
In order to further realize the purpose of this utility model, following technical scheme can also be used:
Dust-full pressure release as described above prompts component, and the pressure release bar is tubular structure open at one end, the other end is closed,
Flowing hole is located on pressure release bar, and the pressure release frame is provided with the slide opening with the cooperation of pressure release bar relative to the other end of open end；Normally
Under state, flowing hole is located in pressure release frame；When pressure release, pressure release bar is mobile to the slide opening side of pressure release frame, makes relief hole and negative pressure
Box cavity connection.
Dust-full pressure release as described above prompts component, and the pressure release tip parts is sounding device, and sounding device is located at institute
In the open end for stating pressure release bar；The sounding device is whistle.
Dust-full pressure release as described above prompts component, and the pressure release tip parts is luminous or warning device；The slide opening
Trigger unit is installed in outside, and when pressure release, pressure release bar passes through slide opening, keeps trigger unit control luminous or warning device work.
Dust-full pressure release as described above prompts component, and the pressure relief mechanism is located on the inside of the negative pressure tank wall at relief hole position,
Decompression cover is set on the outside of the negative pressure tank wall at relief hole position.
Dust-full pressure release as described above prompts component, and the flowing hole is located on pressure release frame；Under normal condition, flowing hole is logical
Pressure release bar is crossed to separate relief hole and negative pressure box cavity；When needing pressure release, pressure release bar makes relief hole to pressure release frame medial movement
It is connected to by the flowing hole on pressure release frame with negative pressure box cavity.
Dust-full pressure release as described above prompts component, and the open end of the pressure release bar is equipped with outer convex edge, pressure release frame relative to
The other end of open end is equipped with interior convex edge, and the compressed spring is arranged between interior convex edge and outer convex edge.
The utility model additionally provides a kind of bench saw, including dust sucting motor, saw blade, saw blade driving assembly, workbench, negative pressure
Case and dust bag are equipped with dust-full pressure release prompt component as described above on the negative pressure box, and dust bag is located in negative pressure box, institute
Negative pressure box is stated equipped with suction inlet and gas outlet, the air inlet of dust bag is opposite with suction inlet, the air inlet of dust sucting motor with out
Port is opposite.
A kind of bench saw as described above, the saw blade are located in closed enclosure, and closed enclosure lower part is provided with dust mouth, the dirt out
Mouth passes through suction inlet and protrudes into negative pressure box, and dust bag is sleeved on the dust mouth of closed enclosure.
The utility model has the beneficial effects that
1, the utility model is embedded pressure relief mechanism on negative pressure tank wall, can preferably solve existing dustless bench saw in dust
The problem of causing dust sucting motor air inlet to reduce after being filled with, is equipped with pressure activated mechanism in pressure relief mechanism, and the dirt in dust bag is arranged
When bits reach certain volume, the pressure in negative pressure box can trigger this mechanism, and the air in outside can enter in negative pressure box,
The available good heat dissipation of dust sucting motor, will not burn out.
2, dust-full cleaning can mating a variety of pressure release tip parts, realize reminding effect when dust-full pressure release, the first, letting out
The sounding devices such as whistle are set in press mechanism, when outside air enters negative pressure box, triggers and issues whistle, prompt dust
Dust is excessive in bag, needs to clear up it；Second, trigger unit is set in pressure relief mechanism, is shone or is alarmed with indicator light
When the mode of the warnings such as device, pressure release bar and trigger mechanism contact, connect indicator light and shine or alarm circuit, indicator light it is bright or
Person generates alarm.Other warning types can also be used, dust in dust bag is prompted excessively to need to clear up.Above two prompt
Mode can also be combined use, remind operator's dust overfill.
3, the utility model compact overall structure, it is easy to carry and mobile；The dust debris removal of dust absorption fan can be effectively ensured
Efficiency reduces the power consumption of dust suction drag reduction, guarantees that equipment uses safe, reduction use cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of bench saw described in the utility model；
Fig. 2 is the structural schematic diagram of the first pressure relief mechanism described in Fig. 1；
Fig. 3 is another state reference map of Fig. 2；
Fig. 4 is the structural schematic diagram of second of pressure relief mechanism described in Fig. 1；
Fig. 5 is another state reference map of Fig. 4；
Appended drawing reference: 1- dust sucting motor, 2- pressure relief mechanism, 21- decompression cover, 22- pressure release frame, convex edge in 221-, 23- pressure release
Bar, the outer convex edge 231-, 24- compressed spring, 25- flowing hole, 26- whistle, 27- trigger unit, 28- shines or warning device, 3-
Negative pressure box, 4- dust bag, 5- closed enclosure, 6- saw blade, 7- dust sucting motor air inlet, 8- dust bag air inlet, 9- workbench.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
As shown in Figure 1, a kind of dust-full pressure release prompt component disclosed in the present embodiment, including it is mounted on 3 relief hole of negative pressure box
On pressure relief mechanism 2 and pressure release tip parts.Pressure relief mechanism 2 can be used on existing similar dustless bench saw, relative to negative
Case 3 is pressed, pressure relief mechanism 2 can be set on the inside of it or outside.
Negative pressure box 3 is in original state, and internal pressure is identical with outside, since dust sucting motor 1 is constantly out of negative pressure box 3
Draw air is conducive to dust from suction inlet under negative pressure state and enters dust bag 4 so that 3 inner cavity of negative pressure box forms negative pressure.Cause
This, 3 ontology of negative pressure box and should carry out preferable sealing structure processing with the link position of other component.
As shown in Figure 2-5, pressure relief mechanism 2 includes pressure release frame 22, pressure release bar 23 and compressed spring 24 in the present embodiment.Pressure release
Frame 22 is tubular structure open at one end, and pressure release frame 22 is fixed on negative pressure box 3, and opening is connected to relief hole；Pressure release frame 22
It is interior to be equipped with pressure release bar 23, compressed spring 24 is set between pressure release bar 23 and pressure release frame 22.
Decompression cover 21 is installed on the outside of relief hole, decompression cover 21 on the one hand can be with foreign matters from being blocked relief hole, on the other hand
Decompression cover 21 is fixedly connected with pressure release frame 22, and pressure release bar 23 and 21 movable contact of decompression cover cooperate, and is conveniently sealed, to guarantee
Negative pressure box 3 has preferable sealing performance.In the case where being provided with decompression cover 21, pressure release frame 22 can also directly and decompression cover
21 fixed seal connections, to facilitate installation to operate.
According to the specific structure of pressure relief mechanism and pressure release mode, pressure release bar 23 can be solid cylinder or tubular structure, by
It relative to pressure release frame 22 is movable part in pressure release bar 23, pressure release bar 23 should be preferably using the materials such as anti abrasive animi resin or stainless steel
Material is made.
When 3 outside pressure of negative pressure box and inside pressure difference change, outside pressure push pressure release bar 23, compressed spring 24 to
3 side of negative pressure box is mobile, and relief hole is connected to by flowing hole with 3 inner cavity of negative pressure box, to realize that negative pressure box inner and outer is connected to
Realize pressure release, air enters in negative pressure box 3.
As shown in Figure 1, negative pressure box 3 is equipped with suction inlet and gas outlet, dust bag air inlet 8 is opposite with suction inlet, dust suction
Motor air inlet 7 is opposite with gas outlet, and dust bag 4 is set in closed enclosure 5 and extend on negative pressure box suction inlet, dust sucting motor air inlet
Mouth 7 passes through the gas outlet of negative pressure box 3, the processing of remaining negative pressure box position seals.Dust bag 4 has certain gas permeability, and air can be with
Across dust bag, dust can not pass through dust bag, can be blocked in inside.
When starting, saw blade cutting generates dust, and dust sucting motor 1 works asynchronously, along air inlet by the air in negative pressure box
It is drawn into dust sucting motor, the pressure of 3 pressure ratio closed enclosure of negative pressure box is small, the dust that the pressure difference of generation can cut saw blade
It is drawn into dust bag 4.
After dust sucting motor 1 works normally, as the dust in dust bag 4 is more and more, the gas permeability of dust bag 4 is increasingly
The inner and outer pressure difference of difference, negative pressure box 3 is increasing, and the sky in dust sucting motor is entered by dust sucting motor air inlet 7
Gas is fewer and fewer, and dust sucting motor 1 cannot cool down well, is easy to burn dust sucting motor.
Pressure relief mechanism is arranged on negative pressure box 3 can preferably solve the problems, such as this, be equipped with and let out in dust-full pressure release prompt component
Tip parts is pressed, when the dust in dust bag 4 reaches certain volume, causes the pressure in negative pressure box 3 to further decrease, in turn
Pressure relief mechanism and the work of pressure release tip parts are triggered, the air in outside can enter in negative pressure box 3, while remind dust-full progress
Cleaning guarantees the heat dissipation of dust sucting motor 1 and safety.
As shown in Figure 2 and Figure 3, pressure release tip parts is provided in the present embodiment on pressure relief mechanism, prompting mode is dust-full
Pass through 26 sounding of whistle when pressure release；With in dust bag, dust increases to causing pressure and ambient pressure difference in negative pressure box more next
It is bigger.When pressure difference is greater than the elastic force of spring, by pressure release bar to negative pressure box internal pressure, the flowing hole of pressure release bar exposes, extraneous empty
Gas can enter in negative pressure box along arrow direction, balance the pressure difference inside and outside negative pressure box.Due to being equipped with whistle on pressure release bar
26, when air-flow passes through, whistle is blowed, dust is prompted excessively to be cleared up.
As shown in Figure 4, Figure 5, pressure release tip parts is luminous or warning device 28, and installation shines on the outside of slide opening or alarm fills
The trigger unit 27 set, when pressure release, pressure release bar, which passes through slide opening, makes trigger unit work.The prompting mode of pressure release tip parts,
Indicator light shines when for dust-full pressure release or circuit is connected with trigger unit cooperation in alarm sounding, pressure release bar, prompt dust
Dust is excessive in bag, needs to carry out cleaning and maintenance.
Above two prompting mode can be applied in combination, and prompt dust overfill, in addition to this, pressure release tip parts can also adopt
With other prompting modes.
As shown in Figure 2 and Figure 3, pressure release bar 23 is tubular structure open at one end, the other end is closed, and flowing hole 25, which is located at, to be let out
On compression bar, pressure release frame 22 is provided with the slide opening with the cooperation of pressure release bar, under normal condition, flowing hole 25 relative to the other end of open end
In pressure release frame；When needing pressure release, flowing hole 25 is mobile to 22 slide opening side of pressure release frame under the drive of pressure release bar, makes pressure release
Hole is connected to 3 inner cavity of negative pressure box.
As shown in Figure 4, Figure 5, flowing hole 25 is located on pressure release frame 22, and under normal condition, flowing hole 25 passes through pressure release bar 23
Relief hole and 3 inner cavity of negative pressure box are separated；When needing pressure release, pressure release bar 23 passes through relief hole to pressure release frame medial movement
Flowing hole 25 on pressure release frame is connected to 3 inner cavity of negative pressure box.
In the present embodiment, 23 open end of pressure release bar is equipped with outer convex edge 231, and pressure release frame 22 is equipped with interior convex edge 221, compressed spring
24 are arranged between interior convex edge 231 and outer convex edge 221.
As shown in Figure 1, the utility model additionally provides a kind of bench saw, including dust sucting motor 1, saw blade 6, saw blade driving group
Part, workbench 9 and dust bag 4, installation dust-full pressure release as described above prompts component on negative pressure box 3, and negative pressure box 3 is equipped with dust suction
Mouth and gas outlet, dust bag air inlet 8 is opposite with suction inlet, and dust sucting motor air inlet 7 is opposite with gas outlet, and dust bag 4 is arranged
It is extend on negative pressure box suction inlet in closed enclosure 5, dust sucting motor air inlet 7 passes through the gas outlet of negative pressure box 3.
Pressure relief mechanism 2 includes pressure release frame 22, pressure release bar 23 and compressed spring 24, and pressure release frame 22 is tubular knot open at one end
Structure, pressure release frame 22 are fixed on negative pressure box 3, and 22 open end of pressure release frame is connected to relief hole, and pressure release bar 23 is equipped in pressure release frame 22,
Compressed spring 24 is set between pressure release frame 22, pressure release bar 23.
When starting, the cutting of saw blade 6 generates dust, and dust sucting motor 1 works asynchronously, from dust sucting motor air inlet 7 by negative pressure box 3
In air be sucked out, the pressure of 3 pressure ratio closed enclosure 5 of negative pressure box is small, and the pressure difference of generation can inhale the dust that saw blade 6 is cut
Enter into dust bag 4.
After dust sucting motor 1 works normally, as the dust in dust bag 4 is more and more, the gas permeability of dust bag 4 is increasingly
Difference, negative pressure box and outside pressure difference are increasing, cause the air entered in dust sucting motor 1 fewer and fewer, dust sucting motor 1
It is cooling less than good, it is easy to burn dust sucting motor.
By pressure relief mechanism, when the dust being arranged in dust bag reaches certain volume, when 3 outside pressure of negative pressure box becomes larger simultaneously
Push pressure release bar 23, compressed spring 24 mobile to 3 side of negative pressure box, relief hole is connected to by flowing hole 25 with 3 inner cavity of negative pressure box.Outside
The air of side can enter in negative pressure box, and the available good heat dissipation of dust sucting motor 1 will not be burnt out, to guarantee dust suction electricity
Machine using safe.
Be provided with pressure release tip parts on pressure relief mechanism 2, when prompting mode is dust-full pressure release by whistle sounding or
It shines or the trigger unit of warning device prompts to operate when dust-full pressure release by sound, light, alarm or other modes
Personnel, dust is excessive in dust bag, needs to carry out cleaning and maintenance.
The technology contents of the not detailed description of the utility model are well-known technique.
Claims (9)
1. dust-full pressure release prompts component, which is characterized in that including the pressure relief mechanism being mounted on negative pressure box and pressure release tip parts,
Pressure relief mechanism includes pressure release frame, pressure release bar and compressed spring, and the pressure release frame is tubular structure open at one end, and pressure release frame is fixed
On negative pressure box, relief hole is provided on the negative pressure box, the open end of pressure release frame is connected to relief hole, and pressure release is equipped in pressure release frame
Compressed spring is arranged between pressure release bar and pressure release frame in bar；Flowing hole is provided on the pressure release bar or pressure release frame；When the negative pressure
Case outside becomes larger with inside pressure difference, pushes pressure release bar, compressed spring mobile to negative pressure box side, and relief hole is by flowing hole and bears
Box cavity connection is pressed to carry out pressure release；When pressure release, the pressure release tip parts work.
2. dust-full pressure release according to claim 1 prompts component, which is characterized in that the pressure release bar is open at one end, another
The closed tubular structure in one end, flowing hole are located on pressure release bar, and the pressure release frame is provided with and lets out relative to the other end of open end
The slide opening of compression bar cooperation；Under normal condition, flowing hole is located in pressure release frame；When pressure release, pressure release bar is to the slide opening side of pressure release frame
It is mobile, it is connected to relief hole with negative pressure box cavity.
3. dust-full pressure release according to claim 2 prompts component, which is characterized in that the pressure release tip parts is sounding dress
It sets, sounding device is located in the open end of the pressure release bar；The sounding device is whistle.
4. dust-full pressure release according to claim 2 prompts component, which is characterized in that the pressure release tip parts be shine or
Warning device；Trigger unit is installed, when pressure release, pressure release bar passes through slide opening, and trigger unit control is made to shine on the outside of the slide opening
Or warning device work.
5. dust-full pressure release according to claim 1 prompts component, which is characterized in that the pressure relief mechanism is located at pressure release hole portion
On the inside of the negative pressure tank wall of position, decompression cover is set on the outside of the negative pressure tank wall at relief hole position.
6. dust-full pressure release according to claim 1 prompts component, which is characterized in that the flowing hole is located on pressure release frame；
Under normal condition, flowing hole is separated relief hole and negative pressure box cavity by pressure release bar；When needing pressure release, pressure release bar is to pressure release
Frame medial movement is connected to relief hole with negative pressure box cavity by the flowing hole on pressure release frame.
7. dust-full pressure release according to claim 1 prompts component, which is characterized in that the open end of the pressure release bar is equipped with outer
Convex edge, pressure release frame are equipped with interior convex edge relative to the other end of open end, compressed spring setting interior convex edge and outer convex edge it
Between.
8. a kind of bench saw, including dust sucting motor, saw blade, saw blade driving assembly, workbench, negative pressure box and dust bag, feature exist
In being equipped with dust-full pressure release prompt component as claimed in claim 1 on the negative pressure box, dust bag is located at negative pressure box
Interior, the negative pressure box is equipped with suction inlet and gas outlet, and the air inlet of dust bag is opposite with suction inlet, the air inlet of dust sucting motor
It is opposite with gas outlet.
9. a kind of bench saw according to claim 8, which is characterized in that the saw blade is located in closed enclosure, closed enclosure lower part
It is provided with dust mouth, the dust mouth passes through suction inlet and protrudes into negative pressure box, and dust bag is sleeved on the dust mouth of closed enclosure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820391016.3U CN208773812U (en) | 2018-03-21 | 2018-03-21 | Dust-full pressure release prompt component and bench saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820391016.3U CN208773812U (en) | 2018-03-21 | 2018-03-21 | Dust-full pressure release prompt component and bench saw |
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| Publication Number | Publication Date |
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| CN208773812U true CN208773812U (en) | 2019-04-23 |
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ID=66140513
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820391016.3U Active CN208773812U (en) | 2018-03-21 | 2018-03-21 | Dust-full pressure release prompt component and bench saw |
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| Country | Link |
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| CN (1) | CN208773812U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111875204A (en) * | 2020-07-23 | 2020-11-03 | 安徽辰创工程技术开发有限公司 | Be used for sewage treatment seepage-proofing anti-compression type septic tank inside and outside lid device |
-
2018
- 2018-03-21 CN CN201820391016.3U patent/CN208773812U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111875204A (en) * | 2020-07-23 | 2020-11-03 | 安徽辰创工程技术开发有限公司 | Be used for sewage treatment seepage-proofing anti-compression type septic tank inside and outside lid device |
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