Piston control and pollution discharge structure of disc type centrifugal machine

Abstract

The utility model discloses a piston control and pollution discharge structure of a disc type centrifugal machine, the centrifugal machine comprises a rotary drum body, a piston and a shell, a mounting groove, a first flow channel, a second flow channel and a liquid discharge channel are limited on the inner wall of the rotary drum body, the piston control and pollution discharge structure comprises a screw plug, a valve block and a valve core, and a sealing seat is arranged in the valve block. The sealing seat and the valve element are oppositely arranged, a liquid inlet hole and a liquid drainage hole are defined in the valve block, a first center hole penetrates through the sealing seat, a second center hole penetrates through the screw plug, the first center hole, the liquid drainage hole and the second center hole are communicated, the liquid drainage channel is communicated with the liquid inlet hole, and a liquid inlet cavity is formed between the valve element and the valve block. The liquid inlet cavity is communicated with the second flowing channel, a liquid filling gap is formed between the rotary drum body and the piston, the first flowing channel is communicated with the liquid filling gap, and the peripheral sides of the valve block and the valve element are in sealed contact with the inner wall of the mounting groove. According to the structure, the technical problems that in the prior art, the pollution discharge efficiency is poor, and assembling and maintaining are inconvenient are solved.

Description

Technical Field

[0001] This utility model relates to the field of centrifuge technology, specifically to a piston control and sewage discharge structure for a disc centrifuge. Background Technology

[0002] Currently, disc centrifuges on the market use water to control the piston's movement. The water enters the centrifuge through a water channel, and after entering, it needs to be drained. Existing drain structures are mostly one-piece cast iron structures, which are inconvenient for assembly, maintenance, and cleaning. Alternatively, the drain port is blocked with a screw plug, requiring operators to unscrew it with tools, which is inconvenient, results in poor sealing, and lowers production safety. Therefore, a new technical solution is urgently needed to solve at least one of these problems. Summary of the Invention

[0003] The purpose of this utility model is to provide a piston control and sewage discharge structure for a disc centrifuge, which solves the technical problems of poor sewage discharge efficiency and inconvenience in assembly and maintenance in the prior art.

[0004] To achieve the above-mentioned technical objectives and requirements, the technical solution adopted by this utility model is: a piston control and sludge discharge structure for a disc centrifuge, wherein the centrifuge includes a rotating drum, a piston movably disposed within the rotating drum, and a housing detachably disposed at one end of the rotating drum, characterized in that the inner wall of the rotating drum defines an installation groove, a first flow channel, a second flow channel, and a drain channel; the piston control and sludge discharge structure includes a screw plug detachably disposed within the installation groove, a valve block detachably disposed on one side of the screw plug, and a valve core movably inserted into the valve block, wherein the valve block contains... A sealing seat is provided, which is disposed opposite to the valve core. The valve block defines an inlet hole and an outlet hole. The sealing seat has a first central hole through it, and the screw plug has a second central hole through it. The first central hole, the outlet hole, and the second central hole are connected. The outlet channel is connected to the inlet hole. An inlet cavity is provided between the valve core and the valve block. The inlet cavity is connected to the second flow channel. A filling gap is provided between the drum body and the piston. The first flow channel is connected to the filling gap. The outer peripheral sides of the valve block and the valve core are in sealed contact with the inner wall of the mounting groove.

[0005] As a preferred technical solution, the second flow channel includes an axially arranged first section and a radially arranged second section, the first section and the second section are connected, and the second section is connected to the liquid inlet cavity.

[0006] As a preferred technical solution, two first sealing rings are embedded on the outer periphery of the valve block, and two second sealing rings are embedded on the outer periphery of the core.

[0007] As a preferred technical solution, the valve core includes a core and a pushing part disposed at one end of the core.

[0008] As a preferred technical solution, a third sealing ring is embedded on the outer periphery of the pushing part.

[0009] As a preferred technical solution, the core has a first hole segment, a second hole segment, and a third hole segment through it, with the third hole segment penetrating the pushing part.

[0010] As a preferred technical solution, the pushing part has a bottom hole on the bottom side of the mounting groove.

[0011] As a preferred technical solution, the drum body is provided with multiple slag discharge holes.

[0012] As a preferred technical solution, the inner side of the drum body is provided with multiple guide grooves, and each guide groove corresponds to two slag discharge holes.

[0013] As a preferred technical solution, the first sealing ring, the second sealing ring, and the third sealing ring are O-rings.

[0014] The beneficial effects of this utility model are:

[0015] 1) Operating water at a certain pressure is introduced into the first flow channel and enters the filling gap to push the piston to move. The piston abuts against the shell. When the centrifuge rotates, due to the centrifugal force, the valve core and the sealing seat abut against each other to form a seal. When the work is finished, operating water is introduced into the second flow channel and enters the inlet cavity of the liquid inlet. The operating water pushes the valve core to move to the bottom of the mounting groove, and the valve core separates from the sealing seat. The water in the filling gap enters the drain hole from the drain channel and then is discharged from the first center hole and the second center hole. It is easy to operate, has good sealing performance, is easy to assemble and maintain, and has high sewage discharge efficiency.

[0016] 2) The first and second sections can guide the water flow direction, making the structure more reasonable;

[0017] 3) The first, second, and third sealing rings improve sealing performance;

[0018] 4) The guide channel and the slag discharge hole work together to facilitate slag discharge and improve slag discharge efficiency. Attached Figure Description

[0019] Figure 1 This is a structural diagram of a piston control and sewage discharge structure provided in one embodiment of the present invention;

[0020] Figure 2 This is a cross-sectional view of a piston control and sewage discharge structure provided in one embodiment of the present invention;

[0021] Figure 3This is a closed view (enlarged view of part A) of the piston control and sewage discharge structure provided in one embodiment of this utility model.

[0022] Figure 4 This is an open view of the piston control and sewage discharge structure provided in one embodiment of the present invention;

[0023] Figure 5 This is a structural diagram of a drum body provided in one embodiment of the present invention;

[0024] Figure 6 This is a structural diagram of the valve block and valve core provided in one embodiment of the present invention;

[0025] Figure 7 This is a perspective sectional view of the valve block and valve core provided in one embodiment of the present invention.

[0026] exist Figures 1-7 In the middle, 1. Drum body; 101. Mounting groove; 102. First flow channel; 103. Second flow channel; 1031. First section; 1032. Second section; 104. Drainage channel; 105. Slag discharge hole; 106. Guide groove; 2. Piston; 3. Housing; 4. Screw plug; 401. Second center hole; 5. Valve block; 501. Liquid inlet hole; 502. Liquid discharge hole; 6. Valve core; 601. Core part; 6011. Pressure relief hole; 602. Pushing part; 6021. Bottom hole; 603. First hole section; 604. Second hole section; 605. Third hole section; 7. Sealing seat; 701. First center hole; 8. Liquid inlet cavity; 9. Liquid filling gap; 10. First sealing ring; 11. Second sealing ring; 12. Third sealing ring; 13. First valve; 14. Second valve; 15. Solid particles. Detailed Implementation

[0027] The present invention will now be further described with reference to the accompanying drawings.

[0028] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "head," "tail," "top," "bottom," "left," "right," "front," "rear," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0029] Please see Figures 1-7This utility model provides a piston 2 control and sewage discharge structure for a disc centrifuge. The centrifuge includes a drum body 1, a piston 2 movably disposed within the drum body 1, and a housing 3 detachably disposed at one end of the drum body 1. The drum body 1 has an inner wall defining an installation groove 101, a first flow channel 102, a second flow channel 103, and a drainage channel 104. The piston 2 control and sewage discharge structure includes a screw plug 4 detachably disposed within the installation groove 101, a valve block 5 detachably disposed on one side of the screw plug 4, and a valve core 6 movably inserted into the valve block 5. A sealing seat 7 is disposed within the valve block 5, and the sealing seat 7 is positioned opposite to the valve core 6. The valve block 5 is provided with an inlet hole 501 and an outlet hole 502. The sealing seat 7 is provided with a first central hole 701, and the screw plug 4 is provided with a second central hole 401. The first central hole 701, the outlet hole 502 and the second central hole 401 are connected. The outlet channel 104 is connected to the inlet hole 501. An inlet cavity 8 is provided between the valve core 6 and the valve block 5. The inlet cavity 8 is connected to the second flow channel 103. A filling gap 9 is provided between the drum body 1 and the piston 2. The first flow channel 102 is connected to the filling gap 9. The outer periphery of the valve block 5 and the valve core 6 is in sealed contact with the inner wall of the mounting groove 101.

[0030] The first flow channel 102 is filled with operating water under a certain pressure, which enters the filling gap 9 and pushes the piston 2 to move. The piston 2 abuts against the housing 3. When the centrifuge rotates, due to the centrifugal force, the valve core 6 abuts against the sealing seat 7 to form a seal. When the work is finished, the second flow channel 103 is filled with operating water, which enters the inlet cavity 8 and pushes the valve core 6 to move to the bottom of the mounting groove 101. The valve core 6 separates from the sealing seat 7. The water in the filling gap 9 enters the drain hole 502 from the drain channel 104 and then exits from the first center hole 701 and the second center hole 401. It is easy to operate, has good sealing performance, and the screw plug, valve block and valve core can be disassembled, making it easy to assemble and maintain. It has high sewage discharge efficiency and a high production safety factor.

[0031] like Figures 1-7 As shown, the second flow channel 103 includes an axially arranged first section 1031 and a radially arranged second section 1032. The first section 1031 and the second section 1032 are connected, and the second section 1032 is connected to the liquid inlet cavity 8. The first section 1031 and the second section 1032 can guide the operating water to change the flow direction, and the structure is more reasonable.

[0032] like Figures 1-7 As shown, two first sealing rings 10 are embedded on the outer periphery of the valve block 5, and two second sealing rings 11 are embedded on the outer periphery of the core 601. The first sealing rings 10 and the second sealing rings 11 improve the sealing performance.

[0033] like Figures 1-7 As shown, the valve core 6 includes a core 601 and a pushing part 602 disposed at one end of the core 601. The operating water pushes the pushing part 602 to move, and the pushing part 602 can also abut against the valve block 5 to form a limit during the movement.

[0034] like Figures 1-7 As shown, a third sealing ring 12 is embedded on the outer periphery of the pushing part 602 to improve the sealing performance.

[0035] like Figures 1-7 As shown, the core 601 has a first hole segment 603, a second hole segment 604, and a third hole segment 605 through its center. The third hole segment 605 penetrates the pushing part 602. The core 601 has a pressure relief hole 6011 arranged radially, which communicates with the third hole segment 605 to relieve pressure. The diameter of the first hole segment 603 is larger than that of the second hole segment 604, and the diameter of the second hole segment 604 is smaller than that of the third hole segment 605, which reduces weight. At the same time, operating water enters the first hole segment 603, the second hole segment 604, and the third hole segment 605 to buffer and relieve pressure.

[0036] like Figures 1-7 As shown, the pushing part 602 has a bottom hole 6021 on the side facing the bottom of the mounting groove 101, which reduces weight and makes the pushing part 602 easier to be pushed by the water.

[0037] like Figures 1-7 As shown, the drum body 1 is provided with a plurality of slag discharge holes 105, and the inner side of the drum body 1 is provided with a plurality of guide grooves 106. Each guide groove 106 corresponds to two slag discharge holes 105. The guide grooves 106 and the slag discharge holes 105 cooperate to facilitate slag discharge and improve slag discharge efficiency.

[0038] like Figures 1-7 As shown, the first sealing ring 10, the second sealing ring 11 and the third sealing ring 12 are O-rings, which are easy to select and have a good sealing effect.

[0039] like Figures 1-7 As shown, the working process of a preferred embodiment of this utility model is as follows:

[0040] The first flow channel 102 is connected to the first valve 13, and the second flow channel 103 is connected to the second valve 14. During operation, the first valve 13 is open, and the second valve 14 is closed. Operating water at a certain pressure is introduced into the first flow channel 102. The operating water enters the filling gap 9 and pushes the piston 2 to move. The piston 2 is in sealed contact with the housing 3. Due to the centrifugal force, the sealing seat 7 and the valve core 6 abut against each other to form a seal. The operating water in the filling gap 9 will not be discharged from the drain channel 104, and solid particles 15 gradually accumulate on the inner edge of the piston 2. After the work is completed, close the first valve 13 and open the second valve 14. The operating water enters the second section 1032 from the first section 1031 and then enters the liquid inlet cavity 8 from the second section 1032. The operating water pushes the pusher 602 to move, and the valve core 6 separates from the sealing seat 7. In this way, the liquid in the filling gap 9 will enter the first central hole 701 from the drain channel 104 and then be discharged from the second central hole 401. Then the piston 2 is reset, and the solid particles 15 enter the guide groove 106 from between the piston 2 and the housing 3 and then are discharged from the slag discharge hole 105.

[0041] The above embodiments are merely descriptions for clearly illustrating the present utility model, and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all implementations here, and the obvious variations or modifications derived therefrom are still within the protection scope of the present utility model.

Claims

1. A piston control and blowdown structure of a disc type centrifuge, the centrifuge comprising a drum body, a piston movably provided in the drum body, and a casing detachably provided at one end of the drum body, characterized in that, The inner wall of the drum body defines a mounting groove, a first flow channel, a second flow channel and a liquid discharge channel, the piston control and pollution discharge structure comprises a screw plug detachably arranged in the mounting groove, a valve block detachably arranged on one side of the screw plug, a valve core movably inserted into the valve block, a sealing seat arranged in the valve block, the sealing seat being arranged opposite to the valve core, the valve block defining a liquid inlet hole and a liquid discharge hole, the sealing seat penetratingly defining a first central hole, the screw plug penetratingly defining a second central hole, the first central hole, the liquid discharge hole and the second central hole being communicated, the liquid discharge channel being communicated with the liquid inlet hole, a liquid inlet cavity being arranged between the valve core and the valve block, the liquid inlet cavity being communicated with the second flow channel, a liquid filling gap being arranged between the drum body and the piston, the first flow channel being communicated with the liquid filling gap, the outer periphery of the valve block and the valve core being sealingly connected with the inner wall of the mounting groove.

2. The piston control and blowdown structure of a disc centrifuge according to claim 1, wherein The second flow channel comprises an axially arranged first segment and a radially arranged second segment, the first segment and the second segment being communicated, the second segment being communicated with the liquid inlet cavity.

3. The piston control and blowdown structure of a disc centrifuge according to claim 1, wherein The valve core comprises a core portion and a pushing portion arranged at one end of the core portion.

4. The piston control and blowdown structure of a disc centrifuge according to claim 3, wherein The outer periphery of the valve block is embedded with two first sealing rings, and the outer periphery of the core portion is embedded with two second sealing rings.

5. The piston control and blowdown structure of a disc centrifuge according to claim 4, wherein The outer periphery of the pushing portion is embedded with a third sealing ring.

6. The piston control and blowdown structure of a disc centrifuge according to claim 4, wherein The core portion penetratingly defines a first hole segment, a second hole segment and a third hole segment at the center, and the third hole segment penetrates the pushing portion.

7. The piston control and blowdown structure of a disc centrifuge according to claim 4, wherein The pushing portion is provided with a bottom hole on the side facing the groove bottom of the mounting groove.

8. The piston control and blowdown structure of a disc centrifuge according to claim 1, wherein The drum body penetratingly defines a plurality of slag discharge holes.

9. The piston control and blowdown structure of a disc centrifuge according to claim 8, wherein The inner side of the drum body is provided with a plurality of flow guide grooves, each of the flow guide grooves corresponding to two slag discharge holes.

10. The piston control and blowdown structure of a disc centrifuge according to claim 5, wherein The first sealing ring, the second sealing ring and the third sealing ring are O-shaped sealing rings.

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