CN210371054U - Low-temperature electric reciprocating pump - Google Patents
Low-temperature electric reciprocating pump Download PDFInfo
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- CN210371054U CN210371054U CN201921130728.0U CN201921130728U CN210371054U CN 210371054 U CN210371054 U CN 210371054U CN 201921130728 U CN201921130728 U CN 201921130728U CN 210371054 U CN210371054 U CN 210371054U
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Abstract
The utility model discloses an electronic reciprocating pump of low temperature, it includes confined pump liquid cavity and can pump liquid cavity in reciprocating motion's pump liquid piston, pump liquid piston left end be connected with the connecting rod, the piston top is connected to the right-hand member of pump liquid cavity, the connecting rod is connected with servo electronic jar drive, the inside feed liquor check valve that is equipped with in piston top, the piston top outside is equipped with out the liquid check valve, pump liquid cavity pass through feed liquor check valve and feed liquor pipe intercommunication, through going out liquid check valve and drain pipe intercommunication. The utility model discloses a servo electronic jar drive pump liquid piston removes, and liquid oxygen pressure size is directly proportional with servo electronic jar's thrust size in the pump liquid cavity, consequently makes things convenient for the pressure control of pumping process liquid oxygen, adopts servo electronic jar as drive arrangement simultaneously, can reduce the volume of device, and occupation space is little.
Description
Technical Field
The utility model belongs to the technical field of reciprocating pump, especially, relate to an electronic reciprocating pump of low temperature.
Background
Reciprocating pumps include piston pumps, metering pumps and diaphragm pumps, commonly known as reciprocating pumps. It is one of positive displacement pumps and has wide application. Reciprocating pumps are delivery machines that provide energy directly to a liquid in the form of pressure energy through the reciprocating motion of a piston.
Liquid oxygen (often abbreviated LOX or LO 2) is a form of oxygen gas when in a liquid state. It has important application in aerospace, submarine and gas industries. However, liquid oxygen has the disadvantage of low temperature, and has the problem of difficult control during filling and use.
Chinese patent CN 203515981U discloses a high-purity ammonia low-temperature reciprocating pump, which comprises a pump body, wherein an inner cylinder is arranged in the pump body, and the pump is characterized in that: the inner cylinder is communicated with an inlet and an air return port, one end of the inner cylinder is provided with a liquid inlet valve, the other end of the inner cylinder is provided with a liquid outlet valve opposite to the liquid inlet valve, a piston rod is further arranged on one side of the pump body close to the liquid inlet valve, a sealing assembly is arranged on the inner wall of the pump body around the piston rod, a liquid outlet flange is arranged on one side of the liquid outlet valve, the liquid outlet flange is connected with a liquid outlet connecting pipe, the liquid outlet flange is fixedly connected with the outside of the connecting position of the liquid outlet connecting pipe through a sleeve nut, and a vacuum protection valve is further. Although the patent discloses the related technology of the cryogenic liquid pump, the cryogenic liquid pump is really applied to liquid oxygen with the delivery temperature generally about 196 ℃ below zero, the pressure control problem exists, and the hydraulic driving system adopted by the power driving module is complex and occupies a large space.
SUMMERY OF THE UTILITY MODEL
Based on the problem that the background art exists, the utility model aims to provide a pressure control is convenient, the structure is simple and convenient and do not occupy the electric reciprocating pump of low temperature in extra space.
In order to achieve the purpose, the utility model provides a technical scheme does:
the utility model relates to an electronic reciprocating pump of low temperature, it includes confined pump liquid cavity and can pump liquid cavity in reciprocating motion's pump liquid piston, pump liquid piston left end be connected with the connecting rod, the piston top is connected to the right-hand member of pump liquid cavity, the connecting rod is connected with servo electronic jar drive, the inside feed liquor check valve that is equipped with in piston top, the piston top outside is equipped with out the liquid check valve, pump liquid cavity pass through feed liquor check valve and feed liquor pipe intercommunication, through going out liquid check valve and drain pipe intercommunication.
Preferably, the outside of the pump liquid cavity is provided with a piston sleeve, the left end of the piston sleeve is connected to the supporting seat, and the right end of the piston sleeve is connected to the top of the piston.
Preferably, a sliding shaft sleeve is arranged on the inner side of the supporting seat, and the sliding shaft sleeve is in interference fit with the supporting seat; a first sealing ring and a first spiral retainer ring are arranged on the right side of the sliding shaft sleeve, and the first spiral retainer ring is positioned on the outer side of the first sealing ring; a groove on the outer surface of the supporting seat is provided with a second sealing ring, a spacer ring and a second spiral retainer ring; the connecting rod is positioned in the sliding shaft sleeve. First sealing washer and first spiral retainer ring mainly are the leakproofness that improves slip axle sleeve department, cause revealing of pump liquid cavity when preventing the connecting rod round trip movement. The second sealing ring, the spacer ring and the second spiral retainer ring are mainly used for preventing liquid oxygen in the tank body from leaking by matching with the tank body when the reciprocating pump extends into the tank body for pumping the liquid oxygen, and a sealing effect of an outlet of the tank body is achieved.
Preferably, the support seat, the piston top and the liquid inlet pipe are fixedly connected through a stud bolt.
Preferably, the left side of supporting seat be equipped with the connecting pipe, the connecting pipe passes through the bolt fastening on the supporting seat, the left side of connecting pipe is equipped with mounting flange, the connecting pipe passes through the bolt fastening on mounting flange, mounting flange's left side is equipped with the seal receptacle, the seal receptacle passes through the bolt and fixes with mounting flange, the inside of mounting flange is equipped with the third sealing washer with the junction of seal receptacle. The effect of connecting pipe is mainly used for protecting the connecting rod, secondly is as the connecting piece of pump liquid cavity department part and servo electronic jar department piece, when the connecting rod round trip movement, guarantees the holistic stability of device.
Preferably, the liquid outlet pipe comprises a liquid outlet straight pipe, a liquid outlet coil pipe and a liquid outlet bent pipe, the liquid outlet straight pipe is communicated with the liquid outlet one-way valve, the liquid outlet coil pipe is arranged outside the connecting pipe, one end of the liquid outlet coil pipe is connected with the liquid outlet straight pipe through a straight-through clamping sleeve, the other end of the liquid outlet coil pipe is connected with the liquid outlet bent pipe through a straight-through clamping sleeve, the liquid outlet straight pipe is fixed on the lower portion of the supporting seat through a compression nut, the liquid outlet bent pipe is arranged on the. The liquid outlet straight pipe, the liquid outlet coil pipe and the liquid outlet bent pipe are connected with the device into a whole, so that the space is reduced.
Preferably, the connecting rod left side hug closely the cushion, the left side of cushion is equipped with the hinge piece, the right side of hinge piece is equipped with the crescent stationary blade, the notch of crescent stationary blade card income connecting rod, the crescent stationary blade passes through the bolt fastening on the hinge piece to it is fixed with the connecting rod with the hinge piece, is connected through this connected mode, connects stably, structural strength is high
Preferably, the right side of the servo electric cylinder is fixed with the mounting flange through a connecting sleeve, the right side of the servo electric cylinder is connected with a fork pin, and the fork pin is connected with the hinge block through a pin shaft. The hinge block is connected with the hinge pin to improve the transmission stability.
Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:
1. the utility model discloses a servo electronic jar drive pump liquid piston removes, and liquid oxygen pressure size is directly proportional with servo electronic jar's thrust size in the pump liquid cavity, consequently makes things convenient for the pressure control of pumping process liquid oxygen, adopts servo electronic jar as drive arrangement simultaneously, can reduce the volume of device, and occupation space is little.
2. The utility model discloses inlet and the liquid outlet at pump liquid cavity have all adopted the check valve design, have not only guaranteed the airtight environment of pumping chamber body, can also prevent liquid reflux.
Drawings
Fig. 1 is a top view of the present invention;
fig. 2 is a front view of the present invention;
FIG. 3 is an enlarged view of A in FIG. 2;
FIG. 4 is an enlarged view of B in FIG. 2;
description of the labels in the schematic:
1-pumping liquid cavity; 2-a pump piston; 3-a connecting rod; 4-piston top; 5-servo electric cylinder; 6-liquid inlet one-way valve; 7-liquid outlet one-way valve; 8-a liquid inlet pipe; 9-liquid outlet straight pipe; 10-a piston sleeve; 11-a support seat; 12-a sliding sleeve; 13-a first sealing ring; 14-a first helical collar; 15-a second sealing ring; 16-spacer ring; 17-a second helical retainer ring; 18-stud bolt; 19-a connecting tube; 20-mounting a flange; 21-a sealing seat; 22-a third seal ring; 23-liquid outlet coil pipe; 24-straight-through cutting sleeve; 25-liquid outlet bent pipe; 26-cutting ferrule elbow; 27-cushion blocks; 28-a hinge block; 29-crescent fixing piece; 30-connecting sleeves; 31-a fork pin; 32-pin shaft.
Detailed Description
For further understanding of the present invention, the present invention will be described in detail with reference to the following examples, which are provided for illustration of the present invention but are not intended to limit the scope of the present invention.
As shown in fig. 1 and fig. 2, the present embodiment relates to a cryogenic electric reciprocating pump, which includes a closed pumping liquid cavity 1 and a pumping liquid piston 2 capable of reciprocating in the pumping liquid cavity 1, wherein the pumping liquid piston 2 is in a labyrinth structure, so that the liquid in the pumping liquid cavity 1 can be prevented from leaking through the pumping liquid piston 2. 2 left ends of pump liquid piston be connected with connecting rod 3, the piston top 4 is connected to the right-hand member of pump liquid cavity 1, connecting rod 3 is connected with the drive of servo electronic jar 5, the inside feed liquor check valve 6 that is equipped with of piston top 4, the piston top 4 outside is equipped with out liquid check valve 7, pump liquid cavity 1 through feed liquor check valve 6 and feed liquor pipe 8 intercommunication, through going out liquid check valve 7 and play liquid straight tube 9 intercommunication. Through the removal of servo electronic jar 5 drive pump liquid piston 2, liquid oxygen pressure size is directly proportional with servo electronic jar 5's thrust size in the pump liquid cavity 1, consequently makes things convenient for the pressure control of pumping process liquid oxygen, adopts servo electronic jar 5 as drive arrangement simultaneously, can reduce the volume of device, and occupation space is little.
As shown in fig. 3, a piston sleeve 10 is arranged outside the pump fluid cavity 1, the left end of the piston sleeve 10 is connected to the supporting seat 11, and the right end is connected to the piston top 4. The support seat 11, the piston top 4 and the liquid inlet pipe 8 are fixedly connected through a stud bolt 18. A sliding shaft sleeve 12 is arranged on the inner side of the supporting seat 11, and the sliding shaft sleeve 12 is in interference fit with the supporting seat 11; a first sealing ring 13 and a first spiral retainer ring 14 are arranged on the right side of the sliding shaft sleeve 12, and the first spiral retainer ring 14 is positioned on the outer side of the first sealing ring 13; a second sealing ring 15, a spacer ring 16 and a second spiral retainer ring 17 are arranged in a groove on the outer surface of the supporting seat 11; the connecting rod 3 passes through the sliding shaft sleeve 12. The first sealing ring 13 and the first spiral retainer ring 14 mainly improve the sealing performance at the sliding shaft sleeve 12, and prevent the leakage of the pump fluid cavity 1 caused by the back and forth movement of the connecting rod 3. The second sealing ring 25, the spacer ring 26 and the second spiral retainer ring 27 mainly have the function of matching with the tank body to prevent the liquid oxygen in the tank body from leaking when the reciprocating pump extends into the tank body for pumping the liquid oxygen, and have a sealing function on the outlet of the tank body.
Supporting seat 11's left side be equipped with connecting pipe 19, connecting pipe 19 passes through the bolt fastening on supporting seat 11, connecting pipe 19's left side is equipped with mounting flange 20, connecting pipe 19 passes through the bolt fastening on mounting flange 20, mounting flange 20's left side is equipped with seal receptacle 21, seal receptacle 21 passes through the bolt and fixes with mounting flange 20, the inside of mounting flange 20 and the junction of seal receptacle 21 are equipped with third sealing washer 22. The connecting pipe 19 mainly protects the connecting rod 3, and then serves as a connecting piece for a part at the pump liquid cavity 1 and a part at the servo electric cylinder 5, so that the overall stability of the device is ensured when the connecting rod 3 moves back and forth.
As shown in fig. 1, a liquid outlet coil 23 is arranged outside the connecting pipe 19, one end of the liquid outlet coil 23 is connected with a liquid outlet straight pipe 9 through a straight-through cutting sleeve 24, the other end of the liquid outlet coil is connected with a liquid outlet bent pipe 25 through a straight-through cutting sleeve 24, the liquid outlet straight pipe 9 is fixed at the lower part of the supporting seat 11 through a compression nut 26, the liquid outlet bent pipe 25 is installed at the lower part of the mounting flange 20, and a cutting sleeve elbow 26 is installed at the pipe orifice. The liquid outlet straight pipe 9, the liquid outlet coil pipe 23 and the liquid outlet bent pipe 25 are connected with the device into a whole, so that the space is reduced.
As shown in fig. 4, the left side of the connecting rod 3 is tightly attached to the cushion block 27, the left side of the cushion block 27 is provided with the hinge block 28, the right side of the hinge block 28 is provided with the crescent fixing piece 29, the crescent fixing piece 29 is clamped into the notch of the connecting rod 3, and the crescent fixing piece 29 is fixed on the hinge block 28 through a bolt, so that the hinge block 28 and the connecting rod 3 are fixed and connected in the connecting mode, the connection is stable, and the structural strength is high. The right side of the servo electric cylinder 5 is fixed with the mounting flange 20 through a connecting sleeve 30, the right side of a cylinder rod of the servo electric cylinder 5 is connected with a fork pin 31, the fork pin 31 is connected with a hinge block 28 through a pin shaft 32, and the pin shaft 32 and the hinge block 28 are located in the connecting sleeve 30. The stability of the transmission can be improved by connecting the pin 32 with the hinge block 28.
The utility model discloses the theory of operation:
liquid feeding: servo electronic jar 5 drive connecting rod 3 is linear motion left, pump liquid piston 2 on the connecting rod 3 is to the direction motion of keeping away from feed liquor check valve 6 promptly, and when feed liquor check valve 6 opened, the liquid outlet was blocked by play liquid check valve 7, and liquid oxygen flows into and is full of whole confined pump liquid cavity 1.
Liquid discharging: servo electronic jar 5 drive connecting rod 3 is rectilinear motion right, pump liquid piston 2 on the connecting rod 3 moves towards the direction of feed liquor check valve 6 promptly, and at this moment, goes out liquid check valve 7 and opens, and the shutoff of feed liquor check valve 6, and pump liquid piston 2 is liquid oxygen pump sending to play liquid straight tube 9 promptly, then through going out liquid coil pipe 23 and play liquid return bend 25, discharges from cutting ferrule elbow 26 at last, accomplishes a pump liquid stroke. The pressure of the liquid oxygen in the sealed pump liquid cavity 1 is in direct proportion to the thrust of the servo electric cylinder 5, so that the pressure control of the liquid oxygen in the pumping process is facilitated.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is merely an embodiment of the present invention, and the actual structure is not limited thereto. Therefore, those skilled in the art should understand that they can easily and effectively implement the present invention without departing from the spirit and scope of the present invention.
Claims (8)
1. The utility model provides a low temperature electric reciprocating pump, its characterized in that, it includes confined pump liquid cavity and can pump liquid cavity reciprocating motion's pump liquid piston, pump liquid piston left end be connected with the connecting rod, the piston top is connected to the right-hand member of pump liquid cavity, the connecting rod is connected with servo electronic jar drive, the inside feed liquor check valve that is equipped with in piston top, the piston top outside is equipped with out the liquid check valve, pump liquid cavity pass through feed liquor check valve and feed liquor pipe intercommunication, through going out liquid check valve and drain pipe intercommunication.
2. The cryogenic electric reciprocating pump of claim 1, wherein a piston sleeve is provided outside the pumping chamber, the piston sleeve being connected to the support base at a left end and to the piston head at a right end.
3. The cryogenic electric reciprocating pump of claim 2, wherein the inner side of the support seat is provided with a sliding shaft sleeve, and the sliding shaft sleeve is in interference fit with the support seat; a first sealing ring and a first spiral retainer ring are arranged on the right side of the sliding shaft sleeve, and the first spiral retainer ring is positioned on the outer side of the first sealing ring; a groove on the outer surface of the supporting seat is provided with a second sealing ring, a spacer ring and a second spiral retainer ring; the connecting rod passes through the sliding shaft sleeve.
4. The cryogenic electric reciprocating pump of claim 2, wherein the support seat, the piston top and the liquid inlet pipe are fixedly connected by a stud bolt.
5. The cryogenic electric reciprocating pump according to claim 2, wherein the connecting pipe is arranged on the left side of the supporting seat and fixed to the supporting seat through bolts, the mounting flange is arranged on the left side of the connecting pipe and fixed to the mounting flange through bolts, the sealing seat is arranged on the left side of the mounting flange and fixed to the mounting flange through bolts, and a third sealing ring is arranged at the joint of the inside of the mounting flange and the sealing seat.
6. The cryogenic electric reciprocating pump according to claim 5, wherein the liquid outlet pipe comprises a liquid outlet straight pipe, a liquid outlet coil pipe and a liquid outlet bent pipe, the liquid outlet straight pipe is communicated with the liquid outlet check valve, the liquid outlet coil pipe is arranged outside the connecting pipe, one end of the liquid outlet coil pipe is connected with the liquid outlet straight pipe through a straight-through cutting sleeve, the other end of the liquid outlet coil pipe is connected with the liquid outlet bent pipe through a straight-through cutting sleeve, the liquid outlet straight pipe is fixed at the lower part of the supporting seat through a compression nut, the liquid outlet bent pipe is arranged at the lower part of the mounting.
7. The cryogenic electric reciprocating pump according to claim 1, wherein the left side of the connecting rod is tightly attached to the cushion block, the left side of the cushion block is provided with a hinge block, the right side of the hinge block is provided with a crescent-shaped fixing piece, the crescent-shaped fixing piece is clamped into the notch of the connecting rod, and the crescent-shaped fixing piece is fixed on the hinge block through a bolt.
8. The cryogenic electric reciprocating pump according to claim 7, wherein the right side of the servo electric cylinder is fixed with the mounting flange through a connecting sleeve, the right side of a cylinder rod of the servo electric cylinder is connected with a fork pin, and the fork pin is connected with the hinge block through a pin shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921130728.0U CN210371054U (en) | 2019-07-18 | 2019-07-18 | Low-temperature electric reciprocating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921130728.0U CN210371054U (en) | 2019-07-18 | 2019-07-18 | Low-temperature electric reciprocating pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210371054U true CN210371054U (en) | 2020-04-21 |
Family
ID=70272306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921130728.0U Active CN210371054U (en) | 2019-07-18 | 2019-07-18 | Low-temperature electric reciprocating pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210371054U (en) |
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2019
- 2019-07-18 CN CN201921130728.0U patent/CN210371054U/en active Active
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