CN203362431U - Hydraulic driving dual-liquid grouting pump - Google Patents
Hydraulic driving dual-liquid grouting pump Download PDFInfo
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- CN203362431U CN203362431U CN 201320247142 CN201320247142U CN203362431U CN 203362431 U CN203362431 U CN 203362431U CN 201320247142 CN201320247142 CN 201320247142 CN 201320247142 U CN201320247142 U CN 201320247142U CN 203362431 U CN203362431 U CN 203362431U
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- hydraulic
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- 239000007788 liquid Substances 0.000 title claims abstract description 88
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000010521 absorption reaction Methods 0.000 claims abstract description 18
- 238000002347 injection Methods 0.000 claims description 26
- 239000007924 injection Substances 0.000 claims description 26
- 239000002002 slurry Substances 0.000 claims description 23
- 241000256135 Chironomus thummi Species 0.000 claims description 20
- 239000011440 grout Substances 0.000 claims description 8
- 239000000945 filler Substances 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 3
- 230000002035 prolonged Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 210000001503 Joints Anatomy 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 235000005035 ginseng Nutrition 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000001131 transforming Effects 0.000 description 1
Abstract
The utility model provides a hydraulic driving dual-liquid grouting pump. The hydraulic driving dual-liquid grouting pump comprises a pump body, a water absorption body, a water output body, a cylinder body, a piston body, spacer bushes, pull rods, a plunger and hydraulic seal boxes, wherein the pump body is fixedly connected with the water absorption body and the water output body through bolts; the cylinder body is fixedly connected with the pump body through bolts; the piston body is arranged in the cylinder body; the spacer bushes are arranged on two sides of the cylinder body and connected with the cylinder body and the pump body; the pull rods are arranged on two sides of the piston body and connected with the piston body through threads; the plunger is connected with the pull rods through threads; the hydraulic seal boxes are arranged between the cylinder body and the pull rods. By means of the hydraulic driving dual-liquid grouting pump of the structure, portability and effective power are improved, operation cost is reduced, and service life is prolonged.
Description
Technical field
The utility model relates to a kind of grouting pump, relates in particular to a kind of hydraulic driving Double-liquid mud-injection pump.
Background technique
Double-liquid mud-injection pump is as important engineering equipment, be widely used in the mobile construction of tunnel and subway tunnel, but adopt the gear-driven mode of traditional crankshaft-link rod because Double-liquid mud-injection pump of the prior art is most of, thereby cause complex structure, bulky, the pump housing is heavy, and the inconvenience carrying is mobile; Because the gear-driven resistance of crankshaft-link rod is larger, useful horsepower is low simultaneously, and energy loss is larger, and core component is easy to wear, makes operating cost higher; The hydraulic seal of existing Double-liquid mud-injection pump and mud sealing all are located at an end of the pump housing in addition, do not separate, if the mud sealing wear causes mud to leak, the mud leaked will destroy the hydraulic seal of slurry pump, directly enter in hydraulic pressure cavity, circulate together with hydraulic oil, thereby destroy hydraulic system, the working life of reducing slurry pump.
The model utility content
The purpose of this utility model is for technological deficiency of the prior art, and a kind of hydraulic driving Double-liquid mud-injection pump is provided, and improves its portability and useful horsepower, reduces its operating cost, and extends its working life.
For achieving the above object, the utility model provides the hydraulic driving Double-liquid mud-injection pump, comprising: the pump housing, water absorption bodies, water-outlet body, cylinder body, piston body, spacer, pull bar, plunger and hydraulic seal box; This pump housing and this water absorption bodies and water-outlet body are bolted to connection; This water absorption bodies sets up A liquid midge chamber and B liquid midge chamber separately; This water-outlet body sets up A liquid slurry output chamber and B liquid slurry output chamber separately; This A liquid midge chamber and B liquid midge chamber are respectively equipped with A liquid pulp absorbing hole and B liquid pulp absorbing hole; This A liquid slurry output chamber and B liquid slurry output chamber are respectively equipped with A liquid grout outlet and B liquid grout outlet; This cylinder body and this pump housing are bolted to connection; This piston body is located in this cylinder body; This spacer is located at this cylinder body both sides, and is connected with this cylinder body and the pump housing; This pull bar is located at this piston body both sides, and is threaded connection with this piston body; This plunger is connected with this pull bar by screw thread; This hydraulic seal box is located between this cylinder body and pull bar.
As further improvement of the utility model, this pump housing, water absorption bodies and water-outlet body and this pump housing joint, be respectively equipped with pump housing seal ring, water absorption bodies seal ring and water-outlet body seal ring;
As further improvement of the utility model, the water intake in this A liquid midge chamber and B liquid midge chamber is provided with suction valve;
As further improvement of the utility model, the water outlet of this A liquid slurry output chamber and B liquid slurry output chamber is provided with outlet valve;
As further improvement of the utility model, this suction valve and outlet valve are inlet non return check valve;
As further improvement of the utility model, this cylinder body is provided with filler opening and return opening;
As further improvement of the utility model, this spacer is provided with two pairs, and every pair is equipped with vent and Leak hole;
As further improvement of the utility model, this pull bar is provided with dust ring;
As further improvement of the utility model, this hydraulic seal box is provided with seal ring;
As further improvement of the utility model, the quantity of this hydraulic seal box is two.
Compared with prior art, the beneficial effects of the utility model are: by a kind of hydraulic driving Double-liquid mud-injection pump is provided, comprising: the pump housing, water absorption bodies, water-outlet body, cylinder body, piston body, spacer, pull bar, plunger and hydraulic seal box.It has improved portability and useful horsepower, has reduced operating cost, and has extended working life.
The accompanying drawing explanation
The structural representation that Fig. 1 is the utility model hydraulic driving Double-liquid mud-injection pump.
Embodiment
Below in conjunction with each mode of execution shown in the drawings, the utility model is elaborated; but should be noted that; these mode of executions are not limitation of the utility model; those of ordinary skills are according to these mode of execution institute work energy, method or structural equivalent transformation or alternative, within all belonging to protection domain of the present utility model.
Shown in ginseng Fig. 1, the structural representation that Fig. 1 is the utility model hydraulic driving Double-liquid mud-injection pump.
In the present embodiment, the hydraulic driving Double-liquid mud-injection pump comprises: the pump housing 10, water absorption bodies 20, water-outlet body 30, cylinder body 40, piston body 50, spacer 60, pull bar 70, plunger 80 and hydraulic seal box 90; This pump housing 10 is bolted to connection with this water absorption bodies 20 and water-outlet body 30; This water absorption bodies 20 sets up A liquid midge chamber 21 and B liquid midge chamber 22 separately; This water-outlet body 30 sets up A liquid slurry output chamber 31 and B liquid slurry output chamber 32 separately; This A liquid midge chamber 21 and B liquid midge chamber 22 are respectively equipped with A liquid pulp absorbing hole 23 and B liquid pulp absorbing hole 24; This A liquid slurry output chamber 31 and B liquid slurry output chamber 32 are respectively equipped with A liquid grout outlet 33 and B liquid grout outlet 34; This cylinder body 40 is bolted to connection with this pump housing 20; This piston body 50 is located in this cylinder body 40; This spacer 60 is located at this cylinder body 40 both sides, and is connected with this cylinder body 40 and the pump housing 10; This pull bar 70 is located at this piston body 50 both sides, and is threaded connection with this piston body 50; This plunger 80 is connected with this pull bar 70 by screw thread; This hydraulic seal box 90 is located between this cylinder body 50 and pull bar 70.
This pump housing 10, water absorption bodies 20 and water-outlet body 30 and these pump housing 10 joints, be respectively equipped with pump housing seal ring 11, water absorption bodies seal ring 25 and water-outlet body seal ring 35;
The water intake in this A liquid midge chamber 21 and B liquid midge chamber 22 is provided with suction valve 26;
The water outlet of this A liquid slurry output chamber 31 and B liquid slurry output chamber 32 is provided with outlet valve 36;
This suction valve 26 and outlet valve 36 are inlet non return check valve;
This cylinder body 40 is provided with filler opening 41 and return opening 42;
This spacer 60 is provided with two pairs, and every pair is equipped with vent 61 and Leak hole 62;
This pull bar 70 is provided with dust ring 71;
This hydraulic seal box 90 is provided with seal ring 91;
The quantity of this hydraulic seal box 90 is two.
In the present embodiment, this hydraulic driving Double-liquid mud-injection pump, by hydraulic power oil this filler opening 41 of turnover and return opening 42, promote this piston body 50 to-and-fro motion.When this piston body 50 during to left movement, drive this pull bar 70 and plunger 80 to left movement, this suction valve 26 in left side cuts out, this outlet valve 36 is opened, the B liquid medium is discharged in this B liquid slurry output chamber 32, discharges by this B liquid grout outlet 34, this outlet valve 36 on right side is closed simultaneously, this suction valve 26 is opened, and the A liquid medium is drawn in this pump housing 10 by this A liquid midge chamber 21; When this piston body 50 moves right, driving this pull bar 70 and plunger 80 moves right, this suction valve 26 in left side is opened, this outlet valve 36 is closed, the B liquid medium is drawn in this pump housing 10 by this B liquid midge chamber 22, and this outlet valve 36 on right side is opened simultaneously, and this suction valve 26 cuts out, the A liquid medium is discharged in this A liquid slurry output chamber 31, discharges by this A liquid grout outlet 33.Hydraulic driving Double-liquid mud-injection pump by this structure, it has changed traditional crankshaft-link rod gear transmission mode in the past, and this pull bar 70 and plunger 80 are set, and drives this piston body 50 and carries out straight line motion, its compact structure, volume are little, lightweight, are particularly suitable for tunnel, subway tunnel moves construction; This hydraulic driving Double-liquid mud-injection pump, can provide hydraulic power easily by hydraulic machinery simultaneously, and effectively the obvious rate of merit is higher than the gear-driven Double-liquid mud-injection pump of traditional crankshaft-link rod, and used unit and easily damaged parts few than conventional pump, reduced operating cost; This hydraulic driving Double-liquid mud-injection pump in addition, by hydraulic seal be pumped medium-tight and separate by this spacer 60, form medium-tight district and hydraulic seal district, effectively guaranteed that the slurry medium that hydraulic system can not be leaked destroys, and has increased the service time of equipment.Based on above-mentioned beneficial effect, the utility model has improved portability and the useful horsepower of equipment, has reduced the operating cost of equipment, and has extended the working life of equipment.
Above listed a series of detailed description is only illustrating for feasibility mode of execution of the present utility model; they are not in order to limit protection domain of the present utility model, all disengaging within equivalent mode of execution that the utility model skill spirit does or change all should be included in protection domain of the present utility model.
To those skilled in the art, obviously the utility model is not limited to the details of above-mentioned example embodiment, and in the situation that do not deviate from spirit of the present utility model or essential characteristic, can realize the utility model with other concrete form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims rather than above-mentioned explanation, therefore is intended to include in the utility model dropping on the implication that is equal to important document of claim and all changes in scope.Any reference character in claim should be considered as limit related claim.
In addition, be to be understood that, although this specification is described according to mode of execution, but not each mode of execution only comprises an independently technological scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should make specification as a whole, and the technological scheme in each embodiment also can, through appropriate combination, form other mode of executions that it will be appreciated by those skilled in the art that.
Claims (10)
1. a hydraulic driving Double-liquid mud-injection pump, it is characterized in that, comprising: the pump housing (10), water absorption bodies (20), water-outlet body (30), cylinder body (40), piston body (50), spacer (60), pull bar (70), plunger (80) and hydraulic seal box (90);
The described pump housing (10) is bolted to connection with described water absorption bodies (20) and water-outlet body (30);
Described water absorption bodies (20) sets up A liquid midge chamber (21) and B liquid midge chamber (22) separately; Described water-outlet body (30) sets up A liquid slurry output chamber (31) and B liquid slurry output chamber (32) separately; Described A liquid midge chamber (21) and B liquid midge chamber (22) are respectively equipped with A liquid pulp absorbing hole (23) and B liquid pulp absorbing hole (24); Described A liquid slurry output chamber (31) and B liquid slurry output chamber (32) are respectively equipped with A liquid grout outlet (33) and B liquid grout outlet (34);
Described cylinder body (40) is bolted to connection with the described pump housing (20);
Described piston body (50) is located in described cylinder body (40);
Described spacer (60) is located at described cylinder body (40) both sides, and is connected with described cylinder body (40) and the pump housing (10);
Described pull bar (70) is located at described piston body (50) both sides, and is threaded connection with described piston body (50);
Described plunger (80) is connected with described pull bar (70) by screw thread;
Described hydraulic seal box (90) is located between described cylinder body (50) and pull bar (70).
2. hydraulic driving Double-liquid mud-injection pump according to claim 1, it is characterized in that, the described pump housing (10), water absorption bodies (20) and water-outlet body (30) and the described pump housing (10) joint, be respectively equipped with pump housing seal ring (11), water absorption bodies seal ring (25) and water-outlet body seal ring (35).
3. hydraulic driving Double-liquid mud-injection pump according to claim 1, is characterized in that, the water intake in described A liquid midge chamber (21) and B liquid midge chamber (22) is provided with suction valve (26).
4. hydraulic driving Double-liquid mud-injection pump according to claim 1, is characterized in that, the water outlet of described A liquid slurry output chamber (31) and B liquid slurry output chamber (32) is provided with outlet valve (36).
5. hydraulic driving Double-liquid mud-injection pump according to claim 3, is characterized in that, described suction valve (26) is inlet non return check valve.
6. hydraulic driving Double-liquid mud-injection pump according to claim 1, is characterized in that, described cylinder body (40) is provided with filler opening (41) and return opening (42).
7. hydraulic driving Double-liquid mud-injection pump according to claim 1, is characterized in that, described spacer (60) is provided with two pairs, and every pair is equipped with vent (61) and Leak hole (62).
8. hydraulic driving Double-liquid mud-injection pump according to claim 1, is characterized in that, described pull bar (70) is provided with dust ring (71).
9. hydraulic driving Double-liquid mud-injection pump according to claim 1, is characterized in that, described hydraulic seal box (90) is provided with seal ring (91).
10. hydraulic driving Double-liquid mud-injection pump according to claim 1, is characterized in that, the quantity of described hydraulic seal box (90) is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320247142 CN203362431U (en) | 2013-05-09 | 2013-05-09 | Hydraulic driving dual-liquid grouting pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320247142 CN203362431U (en) | 2013-05-09 | 2013-05-09 | Hydraulic driving dual-liquid grouting pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203362431U true CN203362431U (en) | 2013-12-25 |
Family
ID=49810211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320247142 Expired - Fee Related CN203362431U (en) | 2013-05-09 | 2013-05-09 | Hydraulic driving dual-liquid grouting pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203362431U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019007A (en) * | 2014-05-15 | 2014-09-03 | 昆明理工大学 | Volume type slurry pump |
-
2013
- 2013-05-09 CN CN 201320247142 patent/CN203362431U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019007A (en) * | 2014-05-15 | 2014-09-03 | 昆明理工大学 | Volume type slurry pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140724 Address after: 075000 No. 1 prosperous road, Zhangjiakou industrial agglomeration area, Hebei, China Patentee after: Zhangjiakou Sino German Drilling Machinery Co., Ltd. Address before: 075000 No. 86, highway street, down garden, Zhangjiakou, Hebei Patentee before: Zheng Dezhong |
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| ASS | Succession or assignment of patent right |
Owner name: ZHANGJIAKOU DEZHONG DRILLING MACHINERY CO., LTD. Free format text: FORMER OWNER: ZHENG DEZHONG Effective date: 20140724 |
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| ASS | Succession or assignment of patent right |
Owner name: ZHENG DEZHONG Free format text: FORMER OWNER: ZHANGJIAKOU DEZHONG DRILLING MACHINERY CO., LTD. Effective date: 20150402 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20150402 Address after: 075000 No. 86, highway street, down garden, Zhangjiakou, Hebei Patentee after: Zheng Dezhong Address before: 075000 No. 1 prosperous road, Zhangjiakou industrial agglomeration area, Hebei, China Patentee before: Zhangjiakou Sino German Drilling Machinery Co., Ltd. |
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| C41 | Transfer of patent application or patent right or utility model | ||
| ASS | Succession or assignment of patent right |
Owner name: HEBEI DEZHONG ENERGY TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: ZHENG DEZHONG Effective date: 20150806 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20150806 Address after: 076250 No. 1 prosperous road, Zhangjiakou industrial agglomeration area, Hebei, China Patentee after: Hebei German Energy Technology Co., Ltd. Address before: 075000 No. 86, highway street, down garden, Zhangjiakou, Hebei Patentee before: Zheng Dezhong |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20180509 |