CN108413067B - Angle valve of calming anger - Google Patents
Angle valve of calming anger Download PDFInfo
- Publication number
- CN108413067B CN108413067B CN201810309309.7A CN201810309309A CN108413067B CN 108413067 B CN108413067 B CN 108413067B CN 201810309309 A CN201810309309 A CN 201810309309A CN 108413067 B CN108413067 B CN 108413067B
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- China
- Prior art keywords
- valve
- valve body
- valve core
- guide plate
- angle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000001914 calming effect Effects 0.000 title description 2
- 239000000463 material Substances 0.000 claims abstract description 55
- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical compound C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 claims abstract description 42
- 244000028419 Styrax benzoin Species 0.000 claims abstract description 21
- 235000000126 Styrax benzoin Nutrition 0.000 claims abstract description 21
- 235000008411 Sumatra benzointree Nutrition 0.000 claims abstract description 21
- 229960002130 benzoin Drugs 0.000 claims abstract description 21
- 235000019382 gum benzoic Nutrition 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims description 22
- 239000011324 bead Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 abstract description 45
- 238000005299 abrasion Methods 0.000 abstract description 5
- 230000000284 resting effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 230000003749 cleanliness Effects 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
- F16K41/023—Spindle sealings with stuffing-box ; Sealing rings for spindles which only rotate, i.e. non-rising spindles
- F16K41/026—Spindle sealings with stuffing-box ; Sealing rings for spindles which only rotate, i.e. non-rising spindles for rotating valves
Abstract
The invention discloses a resting angle valve, which comprises a valve body and a valve core with a valve rod, wherein the valve core is rotatably arranged in an inner cavity of the valve body around the axial lead of the valve rod, the valve body comprises an upper valve body provided with an inlet conduit and a lower valve body provided with an outlet conduit, a guide plate is further arranged between the valve core and the outlet conduit, a material port is arranged on the guide plate, the diameter of a material inlet end port of the material port is larger than that of the valve core, the material port of the guide plate, the inlet conduit and the outlet conduit form a flow channel, the valve core is provided with an open material cavity, and the lower end part of the inlet conduit extends into the material cavity of the valve core. The benzoin angle valve utilizes the benzoin angle characteristic of powder, realizes the non-abrasion cutting of the powder, further avoids the pollution of abrasion materials to a conveying medium, and has the advantages of good cutting performance, simple structure and convenient processing.
Description
Technical Field
The invention relates to the technical field of powder conveying control valves, in particular to a benzoin angle valve.
Background
The pipeline conveying process generally controls the material circulation and cutting off through a valve, but a small amount of powder enters between a valve body and a valve seat in the opening or closing process of the conventional valve (such as a ball valve or a gate valve), the conventional valve is worn to different degrees in use, the special working condition can cause the pollution of the conveyed powder, and even the damage of a sealing element (a valve seat and a ball core) can be caused in severe cases, the cutting function of the valve is damaged, so that most of conventional valves are not suitable for powder conveying.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a benzoin angle valve which has a simple structure, can realize low-abrasion cutting of materials, further avoids pollution of the abrasion materials to conveying media, and has good cutting performance.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a valve that rolls down, includes the valve body and takes the case of valve rod, the case is installed around the axial lead of valve rod rotationally in the inner chamber of valve body, the valve body is including installing the last valve body of entry pipe, installing the lower valve body of export pipe, the case with still be provided with the guide plate between the export pipe, the material mouth has been seted up on the guide plate, the pan feeding end port diameter of material mouth is greater than the diameter of case, the material mouth of guide plate with the entry pipe the export pipe forms the runner, the case has open material chamber, the lower tip of entry pipe extends to the material intracavity of case.
The benzoin angle valve has two operating states, open and closed. When the material cavity port part of the valve core is parallel to the axial line direction of the inlet guide pipe, the benzoin angle valve is in an open state, and powder enters the guide plate through the inlet guide pipe and then flows through the outlet guide pipe to be discharged, so that the powder is conveyed; when the benzoin valve is required to be closed to cut off powder conveying, the valve rod is rotated by 90 degrees, the port of the material cavity of the valve core is relatively vertical to the outlet of the inlet conduit, the bottom of the material cavity of the valve core and the inlet conduit form an inverted T-shaped flow channel, powder is piled in the material cavity of the valve core when falling from the inlet conduit, and due to the characteristic of the benzoin angle of the powder, the powder is continuously piled until the powder in the material cavity of the valve core seals the outlet of the inlet conduit, so that the powder is cut off. The angle of repose, also known as the angle of repose, is generally defined as: the angle formed by the inclined plane of the stack and the horizontal plane below the stack is such that a particular piece of material just slides almost off the inclined plane. The product is called a benzoin valve because the powder is blocked by utilizing the benzoin angle characteristic of the powder, and the product can be called an angle of repose valve.
As a specific implementation mode, the material cavity of the valve core is bowl-shaped, and the bottom of the material cavity is of a flat bottom structure. The valve core adopting the structure is simpler in processing technology, and the moment of the valve core in the rotating process is greatly reduced.
As a specific embodiment, the valve core comprises a valve core body with an open inner cavity and a lining piece detachably arranged in the inner cavity of the valve core body, wherein the outer side wall of the lining piece is matched with the inner side wall of the valve core body in shape and size. Through setting up detachable lining spare, can satisfy the requirement of different customers to the different cleanliness factor of valve.
As a specific implementation mode, the material port on the guide plate is in an inverted horn shape. By adopting the mode, the powder blanking process is smoother, and the phenomenon that powder is accumulated at a certain position is avoided.
Preferably, annular grooves for installing the inlet guide pipe and the outlet guide pipe are respectively formed in the upper valve body and the lower valve body, shoulders are respectively arranged on the inlet guide pipe and the outlet guide pipe, and the shoulders on the inlet guide pipe and the shoulders on the outlet guide pipe are respectively installed in the annular grooves of the upper valve body and the annular grooves of the lower valve body in a sealing mode through sealing elements. By the arrangement mode, the sealing performance of the valve body is improved. Because the inlet conduit is installed in an embedded mode, the acting force born by the inlet conduit is smaller, the possibility of damage is smaller, the requirement on rigidity of the inlet conduit is lower, and various materials can be used.
Preferably, a shoulder is arranged on the radial outer end surface of the guide plate, a mounting groove for mounting the guide plate is formed in the lower end portion of the upper valve body, and the shoulder of the guide plate is accommodated in the mounting groove.
Preferably, the lower end face of the upper valve body is sealed with the upper end face of the lower valve body.
As a specific implementation mode, a sealing element is arranged between the contact surfaces of the upper valve body and the lower valve body, and a sealing groove for installing the sealing element is formed in at least one of the lower end surface of the upper valve body and the upper end surface of the lower valve body.
Preferably, one end of the valve rod is connected with the valve core through a driving connecting piece, and the axial lead of the driving connecting piece is parallel to the axial lead of the inlet conduit. By this arrangement, the likelihood of the spool touching the inlet conduit during rotation is reduced.
Further preferably, the other end of the valve rod extends out of the valve body to be connected with a driver, and the valve rod is relatively and fixedly connected with the valve body through a valve cover.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the repose angle valve disclosed by the invention utilizes the repose angle characteristic of powder, adopts the valve core with the open material cavity and the guide plate positioned between the valve core and the outlet conduit, and the diameter of the inlet end port of the material port on the guide plate is larger than that of the valve core, so that powder blanking is smoother, and powder accumulation in a certain position is avoided. In this angle valve of benzoin, the lower tip of entry pipe extends to the material intracavity of case for when angle valve is in the closed condition of benzoin, the powder falls down to the material intracavity of case from the entry pipe, and the powder is continuously piled up until the powder of case material intracavity seals the export of entry pipe, realizes cutting off of powder, has realized "zero" and has revealed the cutting off, has simplified case structure simultaneously. By adopting the benzoin angle valve, the side flushing of powder is changed into the front flushing in the closing process of the benzoin angle valve, so that the abrasion to the valve core is greatly reduced, the service life of the valve core is prolonged, the maintenance cost is reduced, and the running time of equipment is prolonged.
Drawings
FIG. 1 is a schematic cross-sectional view of a benzoin angle valve according to the present invention; wherein: 1. an upper valve body; 2. a lower valve body; 3. a valve core; 31. a valve core body; 32. a liner; 4. a valve stem; 5. an inlet conduit; 6. an outlet conduit; 7. a deflector; 8. a drive connection; 9. a valve cover; 10. a baffle; 11. a stuffing box; 12. and (5) sealing the groove.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings and specific embodiments.
A benzoin angle valve is used for controlling the flow of powder, wherein the powder refers to common powder including coal powder, polysilicon powder and the like.
The angle of repose valve in this example, see figure 1, comprises a valve body and a valve core 3 with a valve stem 4, the valve core 3 being rotatably mounted in the interior cavity of the valve body about the axis of the valve stem 4.
The valve body comprises an upper valve body 1 provided with an inlet conduit 5 and a lower valve body 2 provided with an outlet conduit 6, a guide plate 7 is further arranged between the valve core 3 and the outlet conduit 6, a material port is formed in the guide plate 7, the diameter of a material inlet end port of the material port is larger than that of the valve core 3, the material port of the guide plate 7, the inlet conduit 5 and the outlet conduit 6 form a flow passage, the valve core 3 is provided with an open material cavity, and the lower end part of the inlet conduit 5 extends into the material cavity of the valve core 3.
Here, the repose angle valve has two operating states of opening and closing. When the material cavity port of the valve core 3 is parallel to the axial line direction of the inlet conduit 5, the benzoin angle valve is in an open state, and powder enters the guide plate 7 through the inlet conduit 5 and then is discharged through the outlet conduit 6, so that the powder is conveyed; when the benzoin angle valve needs to be closed to cut off powder conveying, the valve rod 4 is rotated to enable the valve core 3 to rotate 90 degrees, the port of the material cavity of the valve core 3 is relatively perpendicular to the outlet of the inlet conduit 5, an inverted T-shaped flow channel is formed between the bottom of the material cavity of the valve core 3 and the inlet conduit 5, powder is accumulated in the material cavity of the valve core 3 when falling from the inlet conduit 5, and due to the characteristic of the benzoin angle of the powder, the powder is continuously accumulated until the powder in the material cavity of the valve core 3 seals the outlet of the inlet conduit 5, so that the powder cutting is realized. Adopt the angle valve that rolls in this mode, need cooperate the downstream trip valve just can ensure to cut off the complete condition emergence when effectively having avoided among the prior art valve to cut off, the angle valve that rolls in this case utilizes the characteristic of the angle of roll of powder, has realized "zero" and has revealed to cut off, whole valve simple structure, convenient operation, maintenance cost is low.
Here, through setting the pan feeding end port diameter of guide plate 7 material mouth to be the diameter that is greater than case 3 for more smooth in powder blanking process, the phenomenon of avoiding powder to pile up in certain position takes place. In this example, the material port on the baffle 7 is in an inverted horn shape, as shown in fig. 1. And through this mode of setting, effectively prevent that the powder from revealing the condition emergence in the valve body.
In this example, the material cavity of the valve core 3 is bowl-shaped, and the bottom of the material cavity is flat bottom structure. The valve core 3 adopting the structure has simple structure, small moment in the rotation process of the valve core 3 and convenient operation. Further, the valve core 3 may be configured as a valve core body 31 having an open inner cavity, and a lining member 32 detachably installed in the inner cavity of the valve core body 31, and an outer sidewall of the lining member 32 is matched with an inner sidewall of the valve core body 31 in shape and size. By providing a removable liner 32, the requirements of different customers for different cleanliness of the valve can be met.
Here, annular grooves (not shown) for mounting the inlet duct 5 and the outlet duct 6 are formed in the upper valve body 1 and the lower valve body 2, respectively. The inlet conduit 5 and the outlet conduit 6 are respectively provided with a shoulder, and the shoulder on the inlet conduit 5 and the shoulder on the outlet conduit 6 are respectively arranged in the annular groove of the upper valve body 1 and the annular groove of the lower valve body 2 in a sealing way through sealing elements. By the arrangement mode, the sealing performance of the valve body is improved. In this example, the upper end of the upper valve body 1 is provided with an annular groove, the upper end of the inlet conduit 5 is accommodated in the annular groove of the upper valve body 1 through a shoulder, and the inlet conduit 5 is installed in an embedded manner, so that the acting force borne by the inlet conduit 5 is smaller, the possibility of damage is smaller, the requirement on the rigidity of the inlet conduit 5 is lower, and various materials can be used. The sealing element here comprises O-rings on the upper and lower sides of the shoulder, in this case, a snap spring is also mounted on the side of the annular groove close to the notch, by means of which the shoulders on the inlet duct 5, the outlet duct 6 are pressed towards the bottom of the annular groove. By the arrangement, powder leakage between the inlet conduit 5 and the upper valve body 1 and between the outlet conduit 6 and the lower valve body 2 is avoided.
In this example, a shoulder (not labeled in the figure) is disposed on the radially outer end surface of the baffle 7, a mounting groove for mounting the baffle 7 is disposed on the lower end portion of the upper valve body 1, and the shoulder of the baffle 7 is accommodated in the mounting groove. Here, the notch side of this mounting groove still installs the jump ring, compresses tightly the circular bead of guide plate 7 in the mounting groove through setting up the jump ring, installs the O type circle simultaneously between the contact surface of jump ring and circular bead, between the contact surface of circular bead and mounting groove tank bottom, through this setting, has realized that guide plate 7 and last valve body 1 "zero" reveal.
In this example, the upper valve body 1 and the lower valve body 2 are fixedly connected through a bolt assembly, and the lower end surface of the upper valve body 1 and the upper end surface of the lower valve body 2 are sealed. Specifically, a sealing element is arranged between the contact surfaces of the upper valve body 1 and the lower valve body 2, and at least one of the lower end surface of the upper valve body 1 and the upper end surface of the lower valve body 2 is provided with a sealing groove 12 for installing the sealing element, as shown in fig. 1, by the arrangement mode, the sealing performance of the valve body is ensured. Here, a sealing groove 12, which is an elastic O-ring, is provided on the lower end face of the upper valve body 1. The elastic characteristic of the O-shaped ring can compensate the attaching force between the upper valve body 1 and the lower valve body 2, and is matched with the bolt assembly to form double guarantee, so that zero leakage between the upper valve body 1 and the lower valve body 2 is realized.
In this case, one end of the valve rod 4 is connected to the valve core 3 through a driving connector 8, and as shown in fig. 1, the axis of the driving connector 8 is parallel to the axis of the inlet conduit 5. With this connection, the possibility of the spool 3 touching the inlet duct 5 during rotation is reduced, while ensuring that the spool 3 can rotate 90 °. The other end of the valve rod 4 extends out of the valve body to be connected with an actuator (not shown in the figure), and the valve rod 4 is relatively fixedly connected with the valve body through a valve cover 9. The valve cover 9 is provided with a hollow inner cavity, and the valve rod 4 is inserted into the valve body after penetrating through the inner cavity of the valve cover 9. A baffle 10 is further provided on the outside of the valve cover 9, as shown in fig. 1, and the baffle 10 cooperates with the valve cover 9 to prevent the valve stem 4 from flying out during rotation. A stuffing box 11 is further arranged between the valve cover 9 and the valve rod 4, and the valve cover 9 and the valve rod 4 are further sealed through the stuffing box 11, so that powder is prevented from leaking along the valve rod 4.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (7)
1. The valve is characterized by comprising a valve body and a valve core with a valve rod, wherein the valve core is rotatably arranged in an inner cavity of the valve body around the axial lead of the valve rod, the valve body comprises an upper valve body provided with an inlet conduit and a lower valve body provided with an outlet conduit, a guide plate is further arranged between the valve core and the outlet conduit, a material port is formed in the guide plate, the diameter of a material inlet port of the material port is larger than that of the valve core, the material port of the guide plate, the inlet conduit and the outlet conduit form a flow channel, the valve core is provided with an open material cavity, and the lower end part of the inlet conduit extends into the material cavity of the valve core;
the material cavity of the valve core is bowl-shaped, and the bottom of the material cavity is of a flat bottom structure;
The valve core comprises a valve core body with an open inner cavity and a lining piece detachably arranged in the inner cavity of the valve core body, wherein the outer side wall of the lining piece is matched with the inner side wall of the valve core body in shape and size;
A shoulder is arranged on the radial outer end surface of the guide plate, a mounting groove for mounting the guide plate is formed in the lower end part of the upper valve body, and the shoulder of the guide plate is accommodated in the mounting groove;
the notch side of mounting groove still installs the jump ring, compresses tightly the circular bead of guide plate in the mounting groove through setting up the jump ring, installs O type circle simultaneously between the contact surface of jump ring and circular bead, between the contact surface of circular bead and mounting groove tank bottom.
2. The benzoin angle valve of claim 1, wherein the material port on the baffle is inverted horn-shaped.
3. The benzoin angle valve according to claim 1, wherein the upper valve body and the lower valve body are respectively provided with annular grooves for installing the inlet conduit and the outlet conduit, the inlet conduit and the outlet conduit are respectively provided with shoulders, and the shoulders on the inlet conduit and the shoulders on the outlet conduit are respectively installed in the annular grooves of the upper valve body and the annular grooves of the lower valve body in a sealing way through sealing elements.
4. The angle of repose valve of claim 1, wherein the lower end surface of the upper valve body is sealingly disposed with the upper end surface of the lower valve body.
5. The angle of repose valve as set forth in claim 4, wherein a sealing member is provided between the contact surfaces of said upper valve body and said lower valve body, and a sealing groove for mounting said sealing member is provided on at least one of the lower end surface of said upper valve body and the upper end surface of said lower valve body.
6. The angle of repose valve of claim 1, wherein one end of the valve stem is connected to the valve core by a drive connection, the drive connection having an axis parallel to the axis of the inlet conduit.
7. The angle of repose valve of claim 6, wherein the other end of the valve stem extends beyond the valve body to connect with a driver, the valve stem being relatively fixedly connected with the valve body by a valve cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810309309.7A CN108413067B (en) | 2018-04-09 | 2018-04-09 | Angle valve of calming anger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810309309.7A CN108413067B (en) | 2018-04-09 | 2018-04-09 | Angle valve of calming anger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108413067A CN108413067A (en) | 2018-08-17 |
| CN108413067B true CN108413067B (en) | 2024-04-19 |
Family
ID=63134754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810309309.7A Active CN108413067B (en) | 2018-04-09 | 2018-04-09 | Angle valve of calming anger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108413067B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115773376B (en) * | 2023-01-31 | 2023-04-11 | 德科隆（无锡）流体控制有限公司 | Intelligent metering valve capable of adjusting repose angle |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07223698A (en) * | 1994-02-14 | 1995-08-22 | Kawasaki Heavy Ind Ltd | Valve |
| KR100915877B1 (en) * | 2009-03-13 | 2009-09-07 | 백두산업 주식회사 | Line valve for apparatus for conveying powder |
| CN204784808U (en) * | 2015-07-10 | 2015-11-18 | 北京纽迈特气力输送技术有限公司 | A ball overhead valve for powder transport |
| CN105114653A (en) * | 2015-09-29 | 2015-12-02 | 无锡海力自控工程有限公司 | Floating type multi-phase cut-off repose angle valve |
| CN105179731A (en) * | 2015-09-29 | 2015-12-23 | 无锡海力自控工程有限公司 | Fixed seat-free cut-off repose angle valve |
| CN206973038U (en) * | 2017-04-24 | 2018-02-06 | 山东墨龙石油机械股份有限公司 | A kind of high temperature water cooling dome valve |
| CN208204073U (en) * | 2018-04-09 | 2018-12-07 | 无锡海力自控工程有限公司 | One kind is rested in peace angle valve |
-
2018
- 2018-04-09 CN CN201810309309.7A patent/CN108413067B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07223698A (en) * | 1994-02-14 | 1995-08-22 | Kawasaki Heavy Ind Ltd | Valve |
| KR100915877B1 (en) * | 2009-03-13 | 2009-09-07 | 백두산업 주식회사 | Line valve for apparatus for conveying powder |
| CN204784808U (en) * | 2015-07-10 | 2015-11-18 | 北京纽迈特气力输送技术有限公司 | A ball overhead valve for powder transport |
| CN105114653A (en) * | 2015-09-29 | 2015-12-02 | 无锡海力自控工程有限公司 | Floating type multi-phase cut-off repose angle valve |
| CN105179731A (en) * | 2015-09-29 | 2015-12-23 | 无锡海力自控工程有限公司 | Fixed seat-free cut-off repose angle valve |
| CN206973038U (en) * | 2017-04-24 | 2018-02-06 | 山东墨龙石油机械股份有限公司 | A kind of high temperature water cooling dome valve |
| CN208204073U (en) * | 2018-04-09 | 2018-12-07 | 无锡海力自控工程有限公司 | One kind is rested in peace angle valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108413067A (en) | 2018-08-17 |
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