CN220302185U - Underground slurry pressure reducing device for coal mine - Google Patents
Underground slurry pressure reducing device for coal mine Download PDFInfo
- Publication number
- CN220302185U CN220302185U CN202321923606.3U CN202321923606U CN220302185U CN 220302185 U CN220302185 U CN 220302185U CN 202321923606 U CN202321923606 U CN 202321923606U CN 220302185 U CN220302185 U CN 220302185U
- Authority
- CN
- China
- Prior art keywords
- slurry
- piston
- slurry inlet
- pressure reducing
- flange
- 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.)
- Active
Links
- 239000002002 slurry Substances 0.000 title claims abstract description 108
- 239000003245 coal Substances 0.000 title claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 230000006837 decompression Effects 0.000 claims description 37
- 239000007788 liquid Substances 0.000 claims description 15
- 230000000694 effects Effects 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 4
- 238000005461 lubrication Methods 0.000 claims description 4
- 239000002351 wastewater Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 230000001050 lubricating effect Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 2
- 238000004537 pulping Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
Landscapes
- Paper (AREA)
Abstract
The utility model provides a slurry pressure reducing device for underground coal mines, which comprises a base, a pressure reducing piston cylinder arranged on the base, and a left slurry inlet bin and a right slurry inlet bin which are arranged on the left side and the right side of the pressure reducing piston cylinder and fixedly connected with the pressure reducing piston cylinder, wherein the insides of the left slurry inlet bin, the pressure reducing piston cylinder and the right slurry inlet bin are communicated with each other, the left slurry inlet bin and the right slurry inlet bin are communicated through pipelines, a slurry inlet joint is arranged at the left end of the left slurry inlet bin and is communicated with an external slurry pipeline, a piston mechanism is arranged in the pressure reducing piston cylinder, the piston end of the piston mechanism has the degree of freedom of sliding relatively along the inner wall of the pressure reducing piston cylinder under the action of pressure, and the piston rod end of the piston mechanism has the degree of freedom of keeping away from or sealing contact with the joint of the left slurry inlet joint under the driving of the piston end, and when the piston end of the piston mechanism is in sealing contact, the piston end of the piston mechanism is kept away from the right side of the inside of the pressure reducing piston cylinder.
Description
Technical Field
The utility model belongs to the technical field of automatic slurry equipment, relates to a slurry device for a coal mine, and particularly relates to a slurry pressure reducing device for the coal mine.
Background
In the process of long-distance conveying of slurry from the top of the well to the bottom of the well, the slurry inlet pipeline of the bottom-hole pulping equipment can bear huge pressure under the double effects of water hammer effect and dead weight pressure in the process of conveying the slurry in the pipeline from the ground to the bottom of the well, so that the internal structure of the pulping equipment is easily damaged, and the automatic operation of the pulping equipment is not facilitated. Accordingly, it is desirable to provide a mud pressure relief device that provides pressure protection for a pulping apparatus downhole in a coal mine.
Disclosure of Invention
The utility model aims to provide a slurry pressure reducing device for underground coal mines, which aims to solve the technical problem that the internal structure of underground coal mine direct descending equipment in the prior art is easy to break under the conditions of the water hammer effect and the dead weight pressure of slurry.
In order to achieve the above purpose, the specific technical scheme of the utility model is as follows:
the utility model provides a colliery is mud pressure relief device for pit, its includes the base, sets up the decompression piston jar on the base to and fix left and right both sides, with the left side that the inner chamber link up each other advance thick liquid storehouse, right side advance thick liquid storehouse, left side advances between thick liquid storehouse and the right side advance thick liquid storehouse and pass through the pipeline intercommunication, the left end that left side advances thick liquid storehouse is provided with the thick liquid joint that is used for with outside mud pipeline intercommunication, it has the degree of freedom of following decompression piston jar's inner wall relative slip under the effect of pressure to support in the decompression piston jar, the piston rod end of piston mechanism has the degree of freedom that advances thick liquid joint's joint department to keep away from or sealing contact with left side under the drive of piston end, when sealing contact, piston mechanism's piston end is kept away from the inside right side of decompression piston jar.
The decompression piston cylinder is fixed by a connecting flange and a piston cylinder connecting rod butt clamp, the left pulp feeding bin and the right pulp feeding bin are respectively and fixedly connected with the connecting flange of the decompression piston cylinder by a flange, and the pulp feeding connector is fixed with the left pulp feeding bin by a flange.
The flange of the pulp inlet connector and the flange of the left pulp inlet bin are clamped with a replaceable stop flange, and the flange of the pulp inlet connector, the stop flange and the flange of the left pulp inlet bin are respectively sealed by an O-shaped ring A, O type ring B, so that leakage of pulp is prevented.
The connecting flange is respectively sealed with the flange of the left pulp feeding bin and the flange of the right pulp feeding bin through O-shaped rings C, O-shaped rings D.
The piston mechanism comprises a piston mechanism, a piston rod, a left pulp inlet bin, a left pressure reducing piston cylinder, a left pressure reducing piston and a right pressure reducing piston.
The piston rod and piston head lubricating device further comprises a lubricating oil filling port, wherein the lubricating oil filling port is positioned above the flange on the left side of the decompression piston cylinder and is used for lubricating the piston rod and the piston head.
The device also comprises two pressure gauges, wherein the two pressure gauges are respectively arranged on the pulp inlet connector and the right pulp inlet bin so as to monitor the pulp inlet pressure and the pulp outlet pressure of the device.
The device also comprises an emptying port, wherein the emptying port is positioned below the mounting flange on the right side of the pressure reducing piston cylinder and communicated with the pressure reducing piston cylinder, and a valve is arranged at the emptying port and used for discharging wastewater after the cleaning device is arranged.
The utility model has the beneficial effects that: the utility model provides a slurry pressure reducing device for underground coal mines, which reduces the pressure in a slurry inlet hose by utilizing the ratio of the stress area on the left side of a slurry plug to the stress area on the right side of a piston head, and is based on the principle that small pressure acts on a large stress surface and large pressure acts on the small stress surface, so that the pipeline pressure of the slurry inlet hose is smaller than the pressure of a slurry inlet joint. The utility model is designed by utilizing the relation between the pressure in the pipeline and the stressed area, so that the pressure of the slurry outlet reaches a stable state, and meanwhile, the equipment is of a mechanical structure, has small volume, light weight and good durability, meets the use background of limited space under a mine and severe environment, can provide pressure protection for the slurry making equipment under the coal mine, and is suitable for being widely popularized and applied in industry.
Drawings
FIG. 1 is a schematic view of the internal structure of the present utility model;
fig. 2 is a schematic main structure of the present utility model.
The figure indicates: 1. a slurry inlet joint; 2. a stop flange; 3. a slurry plug; 4. a left pulp inlet bin; 5. a piston rod; 6. a lubrication oil filler; 7. a decompression piston cylinder; 8. a pressure gauge; 9. a slurry outlet; 10. a right pulp inlet bin; 11. an O-shaped ring C; 12. an evacuation port; 13. a support base; 14. an O-ring; 15. a sealing plug; 16. an O-shaped ring D; 17. an O-shaped ring A; 18. an O-shaped ring B; 19. a pulp inlet hose; 20. and a piston cylinder connecting rod.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings for a better understanding of the objects, structures and functions of the present utility model.
As shown in fig. 1 and 2, the underground slurry pressure reducing device for the coal mine comprises a base 13, a pressure reducing piston cylinder 7 arranged on the base 13, and a left slurry inlet bin 4 and a right slurry inlet bin 10 which are arranged on the left side and the right side of the pressure reducing piston cylinder 7 and communicated with the inner cavity, wherein in the embodiment, as shown in fig. 2, the pressure reducing piston cylinder 7 is fixed by a connecting flange and a piston cylinder connecting rod 20 in a butt clamping manner, in order to avoid leakage of slurry, an O-ring 14 is arranged between the pressure reducing piston cylinder 7 and the connecting flange for sealing, the left slurry inlet bin 4 and the right slurry inlet bin 10 are fixedly connected with the connecting flange on the pressure reducing piston cylinder 7 respectively through flanges, in addition, the left slurry inlet bin 4 and the right slurry inlet bin 10 in the embodiment are communicated through pipelines, preferably, the left end of the left slurry inlet bin 4 is also fixedly provided with a slurry inlet joint 1 through a flange for communicating with an external slurry pipeline. After entering from the slurry inlet joint 1, the slurry flows into the right side space of the right slurry inlet bin 10 and the piston head in the decompression piston cylinder 7 through the slurry inlet hose 19, and then enters the pulping equipment.
Meanwhile, in order to realize the decompression function of the device, a piston mechanism is arranged in the decompression piston cylinder 7 in the embodiment, wherein a piston head of the piston mechanism is positioned in the decompression piston cylinder 7, one end of the piston rod 5 is fixed with the piston head, the other end of the piston rod extends into the left pulp inlet bin 4, the right end of the left pulp inlet bin 4 is provided with a sealing plug 15, the piston rod 5 penetrates through the sealing plug 15 to extend into the left pulp inlet bin 4, the left pulp inlet bin 4 is sealed with the decompression piston cylinder 7 through the sealing plug 15, the mud plug 3 is detachably arranged on the piston rod 5 of the left pulp inlet bin 4, the maximum diameter of the mud plug 3 is larger than the diameter of the inner end part of the left pulp inlet bin 4, and preferably, the mud plug 3 is in threaded connection with the piston rod 5. The piston head end of the piston mechanism has the degree of freedom of sliding relatively along the inner wall of the decompression piston cylinder 7 under the action of pressure, the mud plug 3 has the degree of freedom of moving away from or sealing contact with the joint of the left pulp inlet bin 4 and the pulp inlet joint 1 under the drive of the piston head, and when the piston head end of the piston mechanism moves away from the right side of the decompression piston cylinder 7.
Further, in order to prevent leakage of slurry, as shown in fig. 1, in this embodiment, a replaceable stop flange 2 is sandwiched between a flange of the slurry inlet joint 1 and a flange of the left slurry inlet bin 4, and the flange of the slurry inlet joint 1, the stop flange 2 and the flange of the left slurry inlet bin 4 are sealed by an O-ring a17 and an O-ring B18 respectively; the connecting flanges are respectively sealed with the flange of the left pulp feeding bin 4 and the flange of the right pulp feeding bin 10 through an O-shaped ring C11 and an O-shaped ring D16.
In order to maintain lubricity between the piston rod 5 and the sealing plug 15 and between the piston head and the inner wall of the decompression piston cylinder, in this embodiment, a lubrication filler 6 is provided above the left flange of the decompression piston cylinder 7 and in communication with the interior of the decompression piston cylinder 7.
Further, in order to monitor the pulp feeding pressure and the pulp discharging pressure of the device, the device further comprises two pressure gauges 8, wherein the two pressure gauges 8 are respectively arranged on the pulp feeding connector 1 and the right pulp feeding bin 10.
Since the slurry flows into the right space of the piston head in the decompression piston cylinder 7 during decompression, in order to prevent the slurry from adhering to the inner wall of the decompression piston cylinder 7 and wearing the piston head after the device is deactivated, to increase the service life of the piston head, the device after use needs to be flushed, and the main purpose of the device is to flush the right space of the decompression piston cylinder 7 separated by the piston head. In this embodiment, in order to facilitate the discharge of waste water after the inside of the cleaning device, an evacuation port 12 for communicating the outside with the inside of the decompression piston cylinder 7 is provided below the right-side connection flange of the decompression piston cylinder 7, and a valve is provided on the evacuation port. When the device is in a working state, the valve is in a closed state, and when the waste water needs to be discharged, the valve is opened.
The working steps of the underground slurry pressure reducing device for the coal mine provided by the embodiment are as follows:
1. the slurry enters from the slurry inlet joint 1, the pressure of the slurry flowing in the pipeline pushes the slurry plug 3 to drive the piston rod 5 to push the piston head to slide rightwards, so that the slurry enters from the left slurry inlet bin 4, enters into the right space of the piston head in the right slurry inlet bin 10 and the decompression piston cylinder 7 through the slurry inlet hose 19, and is discharged through the slurry outlet 9 of the right slurry inlet bin 10;
2. the space on the right side of the decompression piston cylinder 7 provides a reverse acting force for the slurry outlet of the slurry inlet pipe 19, when the pressure in the slurry inlet hose 19 reaches the pressure set by the device provided by the embodiment (namely, the pressure on the right side of the piston head of the decompression piston cylinder 7 is larger than the pressure on the left side), the slurry pressure in the pipeline moves leftwards by pushing the piston mechanism in the decompression piston cylinder 7, so that the slurry plug 3 props against the replaceable stop flange 2, and the slurry is blocked to the slurry inlet joint 1;
3. when the pressure in the pulp feed hose 19 is lower than the pressure set by the apparatus, the operation of step 1 is repeated.
In addition, there are two ways of flushing the inside of the device in this embodiment: one is a mode of injecting slurry in the working steps of the device, the slurry is changed into water to be injected into a slurry inlet joint, and the water is discharged out of a decompression piston cylinder 7 through a valve after passing through a left slurry inlet bin 4, a slurry inlet hose 19, a right slurry inlet bin 10 and a space on the right side of the decompression piston cylinder 7 in sequence;
one is to fill water into the right pulp inlet bin 10 from the pulp outlet of the right pulp inlet bin 10, and the water flows to the right space of the decompression piston cylinder 7 through the right pulp inlet bin 10 and then is discharged out of the device through a valve.
It should be noted that, the pressure set by the device provided in this embodiment is designed according to the relationship between the stress areas of the pipe and the piston head, and the significance of the present utility model is to protect the structure thereof, and the set pressure needs to be calculated according to the rated pressure that can be borne by the pulping device, and the specific calculation mode is not described in this embodiment.
It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (8)
1. The utility model provides a colliery is mud pressure relief device for pit, its characterized in that includes base (13), sets up decompression piston cylinder (7) on base (13) to and fix left and right both sides at decompression piston cylinder (7), with the left side that the inner chamber link up each other advance thick liquid storehouse (4), right side advance thick liquid storehouse (10), left side advances between thick liquid storehouse (4) and right side advance thick liquid storehouse (10) and pass through the pipeline intercommunication, the left end of left side advances thick liquid storehouse (4) is provided with and is used for the thick liquid joint (1) with outside mud pipeline intercommunication, it is provided with piston mechanism to form a complete set in decompression piston cylinder (7), piston head end of piston mechanism has the degree of freedom of relative slip along the inner wall of decompression piston cylinder (7) under the effect of pressure, piston rod (5) end of piston mechanism has the degree of freedom that keeps away from or sealing contact's joint department that advances thick liquid storehouse (4) are connected to advance thick liquid joint (1) relatively under the drive of piston end, when sealing contact, piston end of piston mechanism keeps away from the inside right side of piston cylinder (7).
2. The underground slurry pressure reducing device for the coal mine according to claim 1, wherein the pressure reducing piston cylinder (7) is clamped and fixed by a connecting flange and a piston cylinder connecting rod (20), the left slurry inlet bin (4) and the right slurry inlet bin (10) are respectively and fixedly connected with the connecting flange of the pressure reducing piston cylinder (7) by a flange, and the slurry inlet joint (1) and the left slurry inlet bin (4) are fixed by a flange.
3. The underground slurry pressure reducing device for the coal mine according to claim 2, wherein a replaceable stop flange (2) is clamped between the flange of the slurry inlet joint (1) and the flange of the left slurry inlet bin (4), and the flanges of the slurry inlet joint (1), the stop flange (2) and the flange of the left slurry inlet bin (4) are respectively sealed by an O-shaped ring A (17) and an O-shaped ring B (18) to prevent slurry leakage.
4. The underground slurry pressure reducing device for the coal mine according to claim 2, wherein the connecting flange is respectively sealed with the flange of the left slurry inlet bin (4) and the flange of the right slurry inlet bin (10) through an O-shaped ring C (11) and an O-shaped ring D (16).
5. The underground slurry decompression device for the coal mine, according to claim 1, wherein one end of a piston rod (5) of the piston mechanism is fixed with the piston head, a slurry plug (3) is fixed at the end part of the piston rod after the other end of the piston rod stretches into the left slurry inlet bin (4), the slurry plug (3) is detachably arranged on the piston rod (5) in the left slurry inlet bin (4), the maximum diameter of the slurry plug (3) is larger than the diameter of the inner end part of the left slurry inlet bin (4), a sealing plug (15) is arranged at the right end of the left slurry inlet bin (4), and the piston rod (5) stretches into the left slurry inlet bin (4) through the sealing plug (15) to seal between the left slurry inlet bin (4) and the decompression piston cylinder (7).
6. A downhole slurry pressure reducing device for coal mines according to claim 1, further comprising a lubrication filler (6), the lubrication filler (6) being located above the left flange of the pressure reducing piston cylinder (7) for lubricating the piston rod (5) and the piston head.
7. The underground slurry pressure reducing device for the coal mine according to claim 1, further comprising two pressure gauges (8), wherein the two pressure gauges (8) are respectively arranged on the slurry inlet joint (1) and the right slurry inlet bin (10) so as to monitor the slurry inlet pressure and the slurry outlet pressure of the device.
8. A downhole slurry pressure reducing device for coal mine according to claim 1, further comprising an emptying port (12), wherein the emptying port (12) is located below the right mounting flange of the pressure reducing piston cylinder (7) and is communicated with the pressure reducing piston cylinder (7), and a valve is arranged at the emptying port (12) for discharging waste water after the interior of the cleaning device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321923606.3U CN220302185U (en) | 2023-07-21 | 2023-07-21 | Underground slurry pressure reducing device for coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321923606.3U CN220302185U (en) | 2023-07-21 | 2023-07-21 | Underground slurry pressure reducing device for coal mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220302185U true CN220302185U (en) | 2024-01-05 |
Family
ID=89346182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321923606.3U Active CN220302185U (en) | 2023-07-21 | 2023-07-21 | Underground slurry pressure reducing device for coal mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220302185U (en) |
-
2023
- 2023-07-21 CN CN202321923606.3U patent/CN220302185U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3776558A (en) | Tandem packing for a reciprocating pump | |
| CN115045630A (en) | Conversion type Christmas tree port sealing device for oil field | |
| CN220302185U (en) | Underground slurry pressure reducing device for coal mine | |
| CN202417383U (en) | Wellhead blowout prevention sealing device | |
| CN116927873A (en) | Underground slurry pressure reducing device for coal mine | |
| CN201496027U (en) | compensating self-sealing blowout preventer | |
| CA2331931A1 (en) | The hydraulic pumping unit | |
| CN201991871U (en) | Hollow multistage-sleeve sand-preventing telescopic cylinder system | |
| CN211623378U (en) | Blowout preventer for drilling hole in mine | |
| CN211081791U (en) | Bag type blowout prevention hole sealing device | |
| CN213575657U (en) | Slurry discharge valve suitable for coal mine paste filling | |
| CN101514617A (en) | Design method of blowout control box sealed by expanding rubber plug | |
| CN201401148Y (en) | Expanding type capsule sealing anti-spray box | |
| CN110578483B (en) | Grouting circulation assembly suitable for traveling block hook drilling machine and using method thereof | |
| CN210290093U (en) | Sand-proof oil-well pump with super-long plunger and short pump barrel | |
| CN105484693B (en) | It is with pressure to change polished rod well head controller | |
| CN2528961Y (en) | Underground hydraulic oil-well pump | |
| CN220487665U (en) | Grouting drainage device for coal mine | |
| RU2289674C2 (en) | Sealing device | |
| CN211009049U (en) | Hydraulic balance sealing plunger mud pump | |
| CN213331003U (en) | Oil pipe blanking plug for workover oil and gas field | |
| CN216381301U (en) | Steel wire grease injection sealing control device | |
| CN214464040U (en) | High-pressure continuous plug-casting wellhead conversion device | |
| CN211443832U (en) | High-speed motor with control valve for chain tightening | |
| CN218293824U (en) | Long plunger ring closed strong vortex pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |