CN209853328U - Pulling type powder pressurizing and conveying device - Google Patents
Pulling type powder pressurizing and conveying device Download PDFInfo
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- CN209853328U CN209853328U CN201920243577.3U CN201920243577U CN209853328U CN 209853328 U CN209853328 U CN 209853328U CN 201920243577 U CN201920243577 U CN 201920243577U CN 209853328 U CN209853328 U CN 209853328U
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Abstract
The utility model discloses a pulling type powder pressurizing and conveying device, which comprises a double-rod hydraulic cylinder, a first conveying cylinder and a second conveying cylinder, wherein the double-rod hydraulic cylinder is positioned between the first conveying cylinder and the second conveying cylinder; a first normal-pressure feeding hole and a first high-pressure discharging hole are formed in the first conveying cylinder, and a first sheet-shaped piston and a first cylindrical piston are arranged in the first conveying cylinder; a second normal-pressure feeding hole and a second high-pressure discharging hole are formed in the second conveying cylinder, and a second flaky piston and a second cylindrical piston are arranged in the second conveying cylinder; a left piston rod and a right piston rod of the double-rod hydraulic cylinder are respectively connected with the first flaky piston and the second flaky piston; and a first driving mechanism and a second driving mechanism for driving the first cylindrical piston and the second cylindrical piston to move are respectively arranged in the first conveying cylinder and the second conveying cylinder. The utility model discloses a continuous transport of powder has reduced the energy consumption, has avoided inert gas's emission.
Description
Technical Field
The utility model relates to a powder pressurization transport technical field, in particular to pull type powder pressurization conveyor.
Background
Powder is an aggregate of many small particles, and common powder is powdered coal, flour or cement powder.
The pressurized conveying process of the powder is related to a plurality of fields of coal chemical industry, metallurgy, food processing and the like. Coal gasification, especially pulverized coal pressure gasification, is a clean coal utilization technology, and has been rapidly developed in recent years and widely used. The pulverized coal pressure conveying technology is an indispensable technical link of the pulverized coal pressure gasification technology. The pressurized pulverized coal conveying technology is to increase dry pulverized coal from normal pressure to a certain specific high pressure so as to realize combustion and gasification of the pulverized coal under high pressure.
The principle of the existing industrially used pulverized coal pressurized conveying technology is that high-pressure inert gas is used for rushing into a pulverized coal pressurized locking bucket, the pressure is improved, the pulverized coal is conveyed to a pulverized coal storage tank after being balanced with the pressure of the pulverized coal storage tank, the high-pressure inert gas is used for replacing solid pulverized coal in the locking bucket, then the high-pressure inert gas in the pulverized coal locking bucket is discharged, and the process is circulated. For example, CN1376761A discloses a method and a device for feeding dry pulverized coal in a dry pulverized coal pressure gasification process, the device comprises an intermediate charging bucket with a conical surface provided with an inert gas inlet device for storing pulverized coal, and a high-pressure pulverized coal bunker connected with the bottom of the intermediate charging bucket through a pipeline, the intermediate charging bucket is pressurized by inert gas, so that the pressure in the intermediate charging bucket is the same as that of the high-pressure pulverized coal bunker connected with the intermediate charging bucket, and then the pulverized coal is conveyed to the high-pressure pulverized coal bunker. The adoption of the technology mainly has the following technical defects:
1. a large amount of inert gases such as N2, CO2 and the like need to be discharged in the pressurizing process, so that the great environmental pollution is caused;
2. the efficiency of the pressurizing and conveying process is low, and continuous adjustability cannot be realized;
3. the pressure conveying needs high pressure resistant equipment, and the volume is large, and the manufacturing cost is high;
4. the energy consumption is big, and is high to the sealed and pressure resistance performance requirement of powder conveying pipeline and pipeline auxiliary member.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the utility model provides a pull type powder pressurization conveyor need not discharge inert gas, realizes the continuous transportation of powder.
In order to achieve the above purpose, the pulling type powder pressurizing and conveying device of the present invention comprises a double-rod hydraulic cylinder, a first conveying cylinder and a second conveying cylinder, wherein the double-rod hydraulic cylinder is located between the first conveying cylinder and the second conveying cylinder; the first conveying cylinder is provided with a first normal-pressure feeding hole and a first high-pressure discharging hole, a first sheet-shaped piston and a first cylindrical piston are arranged in the first conveying cylinder, a first accommodating space for storing powder can be formed between the first sheet-shaped piston and the first cylindrical piston, and when the first sheet-shaped piston and the first cylindrical piston move in the first conveying cylinder, the first accommodating space can be respectively communicated with the first normal-pressure feeding hole and the first high-pressure discharging hole; a second normal-pressure feeding hole and a second high-pressure discharging hole are formed in the second conveying cylinder, a second flaky piston and a second cylindrical piston are arranged in the second conveying cylinder, a second accommodating space for storing powder can be formed between the second flaky piston and the second cylindrical piston, and when the second flaky piston and the second cylindrical piston move in the second conveying cylinder, the second accommodating space can be communicated with the second normal-pressure feeding hole and the second high-pressure discharging hole respectively; a left piston rod of the double-rod hydraulic cylinder is fixedly connected with the first flaky piston, and a right piston rod of the double-rod hydraulic cylinder is fixedly connected with the second flaky piston; and a first driving mechanism and a second driving mechanism for driving the first cylindrical piston and the second cylindrical piston to move are respectively arranged in the first conveying cylinder and the second conveying cylinder.
Preferably, a first T-shaped connecting rod is arranged in the first conveying cylinder, a large end of the first T-shaped connecting rod is arranged in the first cylindrical piston, the first T-shaped connecting rod penetrates through the first cylindrical piston, a small end of the first T-shaped connecting rod is fixedly connected with the first sheet-shaped piston, and the first T-shaped connecting rod can slide relative to the first cylindrical piston; the second conveying cylinder is internally provided with a second T-shaped connecting rod, the large end of the second T-shaped connecting rod is arranged in the second cylindrical piston, the second T-shaped connecting rod penetrates through the second cylindrical piston, the small end of the second T-shaped connecting rod is fixedly connected with the second flaky piston, and the second T-shaped connecting rod can slide relative to the second cylindrical piston.
Preferably, the first conveying cylinder and the second conveying cylinder are symmetrically arranged at two ends of the double-rod hydraulic cylinder.
Preferably, a first combined sealing ring is arranged between the first sheet-shaped piston and the first conveying cylinder and between the first cylindrical piston and the first conveying cylinder; and second combined sealing rings are arranged between the second sheet-shaped piston and the second conveying cylinder and between the second cylindrical piston and the second conveying cylinder.
Preferably, the first combined sealing ring and the second combined sealing ring comprise a V-shaped cloth clamping sealing ring and a U-shaped sealing ring, a spring piece with a U-shaped section is arranged in a groove of the U-shaped sealing ring, and the V-shaped cloth clamping sealing ring is arranged on one side of an opening of the U-shaped sealing ring.
Compare current fine coal pressure conveyor, the utility model discloses a pull-type powder pressure conveyor, it is not high to the resistance to pressure requirement of delivery path, and the energy consumption is low, has reduced equipment cost, has avoided discharging inert gas. Through the utility model discloses a pull-type powder pressurization conveyor has realized the continuous conveyor of powder, has reduced the energy consumption, has avoided inert gas's emission.
Drawings
Fig. 1 is a schematic view of a pull-type powder pressurized conveying device of the present invention, in which a first conveying cylinder is in a feeding state and a second conveying cylinder is in a discharging state;
fig. 2 is a schematic view of the first conveying cylinder and the second conveying cylinder of the pull-type powder pressurized conveying device of the present invention in a discharging state and an exhausting state;
fig. 3 is a schematic view of the first conveying cylinder and the second conveying cylinder of the pull-type powder pressurized conveying device of the present invention in a discharging state and a feeding state;
fig. 4 is a schematic view of the first conveying cylinder and the second conveying cylinder of the pull-type powder pressurized conveying device of the present invention in an exhaust state and a discharge state;
FIG. 5 is a partial enlarged view of area A in FIG. 4;
fig. 6 is a schematic view of the arrangement of the combi seal.
Detailed Description
The utility model provides a "left side", "right" etc. are only used for showing relative position relation, and after the absolute position of the object that is described changed, then this relative position relation also probably changes correspondingly.
To maintain the following description of the disclosed embodiments of the present invention clear and concise, detailed descriptions of well-known functions and components may be omitted. The following describes in detail embodiments of the present invention with reference to the drawings.
As shown in fig. 1-5, the utility model discloses a pull-type powder pressurization conveyor, including two pole pneumatic cylinders 10, first transport cylinder 20 and second transport cylinder 30, two pole pneumatic cylinders 10 are located between first transport cylinder 20 and the second transport cylinder 30.
The first conveying cylinder 20 is provided with a first normal-pressure feeding hole 201 and a first high-pressure discharging hole 202, the first conveying cylinder 20 is internally provided with a first sheet-shaped piston 21 and a first cylindrical piston 22, a first accommodating space 203 for accommodating powder can be formed between the first sheet-shaped piston 21 and the first cylindrical piston 22, and when the first sheet-shaped piston 21 and the first cylindrical piston 22 move in the first conveying cylinder 20, the first accommodating space 203 can be respectively communicated with the first normal-pressure feeding hole 201 and the first high-pressure discharging hole 202; the second conveying cylinder 30 is provided with a second normal-pressure feeding hole 301 and a second high-pressure discharging hole 302, a second sheet-shaped piston 31 and a second cylindrical piston 32 are arranged in the second conveying cylinder 30, a second accommodating space 303 for accommodating powder can be formed between the second sheet-shaped piston 31 and the second cylindrical piston 32, and when the second sheet-shaped piston 31 and the second cylindrical piston 32 move in the second conveying cylinder 30, the second accommodating space 303 can be respectively communicated with the second normal-pressure feeding hole 301 and the second high-pressure discharging hole 302. When powder is conveyed in the first conveying cylinder 20, the powder enters the first accommodating space 203 through the communication between the first accommodating space 203 and the first normal-pressure feed inlet 201, then when the powder moves along with the first sheet-shaped piston 21 and the first cylindrical piston 22 in the first conveying cylinder 20, the powder moves along with the first sheet-shaped piston 21 and the first cylindrical piston 22 in the first accommodating space 203, when the first accommodating space 203 moves to be communicated with the first high-pressure discharge outlet 202, high-pressure gas enters the first accommodating space 203, and the powder is discharged. The process of transporting the powder in the second transporting cylinder 30 is similar to the process of transporting the powder in the first transporting cylinder 20, and will not be described again.
The left piston rod 11 of the double-rod hydraulic cylinder 10 is fixedly connected with the first sheet-shaped piston 21, and the right piston rod 12 of the double-rod hydraulic cylinder 10 is fixedly connected with the second sheet-shaped piston 31. The first sheet-shaped piston 21 and the second sheet-shaped piston 31 are driven by the double-rod hydraulic cylinder 10 at the same time, so that the first high-pressure discharge port 202 and the second high-pressure discharge port 302 discharge in turn, and continuous powder conveying is realized.
The first and second transfer cylinders 20 and 30 are provided therein with a first driving mechanism 221 and a second driving mechanism 321 for driving the first and second cylindrical pistons 22 and 32 to move, respectively. The first driving mechanism 221 and the second driving mechanism 321 may be hydraulic cylinders, that is, two hydraulic cylinders are used to drive the first cylindrical piston 22 and the second cylindrical piston 32 to move respectively. The embodiment of the present invention provides that the first driving mechanism 221 and the second driving mechanism 321 can adopt the structure of fig. 5, only the structure of the second driving mechanism 321 is shown in fig. 5, the second driving mechanism 321 is a fixed piston rod, one end of the fixed piston rod is fixed on the second conveying cylinder 30, and the other end of the fixed piston rod is fixed with an annular piston, the annular piston is arranged in the cylinder of the second cylindrical piston 32, the annular piston is divided into left and right chambers in the cylinder of the second cylindrical piston 32, two oil paths are arranged in the fixed piston rod and are respectively communicated with the left and right chambers, the oil is respectively supplied to the left and right chambers through the two oil paths, and the second cylindrical piston 32 can be driven to move in the second conveying cylinder 30. The first driving mechanism 221 and the second driving mechanism 321 have the same structure, and the structure of the first driving mechanism 221 is not described herein again.
The distance between the first high-pressure discharge port 202 and the second high-pressure discharge port 302 is smaller than the first normal-pressure feed port 201 and the second normal-pressure feed port 301, that is, the first high-pressure discharge port 202 and the second high-pressure discharge port 302 are respectively arranged at one ends of the first conveying cylinder 20 and the second conveying cylinder 30 close to the double-rod hydraulic cylinder 10. The first cylindrical piston 22 and the second cylindrical piston 32 are cylindrical structures, and can respectively seal the first normal-pressure feeding hole 201 and the second normal-pressure feeding hole 301 in the moving process, so that powder is prevented from entering the internal non-conveying areas of the first conveying cylinder 20 and the second conveying cylinder 30.
When the pulling type powder pressurizing and conveying device of the present invention is used, taking one cycle as an example, at the initial position, as shown in fig. 1, the first conveying cylinder 20 is in a feeding state, the second conveying cylinder 30 is in a discharging state, the first sheet-like piston 21 and the first cylindrical piston 22 are separated by a distance to form the first accommodating space 203, negative pressure exists in the first accommodating space 203, powder is sucked into the first accommodating space 203 from the first normal pressure feeding port 201, after the feeding is completed, the dual-rod hydraulic cylinder 10 drives the first sheet-like piston 21 to move in a direction close to the dual-rod hydraulic cylinder 10, the first cylindrical piston 22 moves in a direction close to the dual-rod hydraulic cylinder 10 synchronously, so that the first accommodating space 203 moves from communicating with the first normal pressure feeding port 201 to communicating with the first high pressure discharging port 202, and at the same time, the dual-rod hydraulic cylinder 10 drives the second sheet-like piston 31 to move in a direction away from the dual-rod hydraulic cylinder 10, gradually approaches the second cylindrical piston 32, so that the gas in the second accommodating space 303 can be discharged, as shown in fig. 2; after the second sheet-shaped piston 31 approaches the second cylindrical piston 32, the second driving mechanism 321 drives the second cylindrical piston 32 to move rightward, and the moving speed of the second cylindrical piston 32 can be made greater than that of the second sheet-shaped piston 31, so that the second cylindrical piston 32 and the second sheet-shaped piston 31 move to the right position, the second cylindrical piston 32 and the second sheet-shaped piston 31 are pulled apart to a set distance and form a negative pressure, and a second accommodating space 303 formed between the second cylindrical piston 32 and the second sheet-shaped piston 31 is communicated with the second normal-pressure feed port 301 and starts to feed materials, as shown in fig. 3; after the feeding of the second accommodating space 303 is completed, the double-rod hydraulic cylinder 10 drives the second sheet-shaped piston 31 to move towards the direction close to the double-rod hydraulic cylinder 10, that is, to move leftwards, the second cylindrical piston 32 synchronously moves towards the direction close to the double-rod hydraulic cylinder 10, so that the second accommodating space 303 moves from being communicated with the second normal-pressure feeding hole 301 to being communicated with the second high-pressure discharging hole 302, and meanwhile, the double-rod hydraulic cylinder 10 drives the first sheet-shaped piston 21 to approach the first cylindrical piston 22, so that the gas in the first accommodating space 203 can be discharged, as shown in fig. 4; after the first sheet piston 21 approaches the first cylindrical piston 22, the first driving mechanism 221 drives the first sheet piston 21 to move leftward, and the first cylindrical piston 22 and the first sheet piston 21 may be moved to a position where the moving speed of the first sheet piston 22 is greater than the moving speed of the first sheet piston 21, so that the powder conveyance of one cycle is completed as shown in fig. 1.
In the process of conveying powder, the first conveying cylinder 20 and the second conveying cylinder 30 of the pull-type powder pressurizing and conveying device of the utility model, the sizes of the first and second accommodating spaces 203 and 303 should be kept constant, so as to prevent the powder from being extruded, i.e. the distance between the first sheet piston 21 and the first cylindrical piston 22, and the distance between the second sheet piston 31 and the second cylindrical piston 32 is kept constant during the powder conveying process, the distance can be set according to the distance between the first normal pressure inlet 201 and the first high pressure outlet 202 and the distance between the second normal pressure inlet 301 and the second high pressure outlet 302, so that the first normal pressure inlet 201 and the first high pressure outlet 202 cannot be communicated with the first accommodating space 203 at the same time, the second normal pressure feed inlet 301 and the second high pressure discharge outlet 302 cannot be simultaneously communicated with the second accommodating space 303.
The distance between the first sheet piston 21 and the first cylindrical piston 22 and the distance between the second sheet piston 31 and the second cylindrical piston 32 are kept constant during powder conveying, which can be achieved by the cooperation of the double-rod hydraulic cylinder 10 and the first driving mechanism 221 and the second driving mechanism 321, as a preferred embodiment of the present invention, the first sheet piston 21 and the second sheet piston 31 can respectively pull the first cylindrical piston 22 and the second cylindrical piston 32 to move during powder conveying, specifically: a first T-shaped connecting rod 23 is arranged in the first conveying cylinder 20, the large end of the first T-shaped connecting rod 23 is arranged in the first cylindrical piston 22, the first T-shaped connecting rod 23 penetrates through the first cylindrical piston 22, the small end of the first T-shaped connecting rod 23 is fixedly connected with the first sheet-shaped piston 21, the first T-shaped connecting rod 23 can slide relative to the first cylindrical piston 22, and when the first sheet-shaped piston 21 moves rightwards, the large end of the first T-shaped connecting rod 23 abuts against the inner side of the end of the first cylindrical piston 22, so that the first cylindrical piston 22 can be pulled to move synchronously; similarly, a second T-shaped connecting rod 33 is disposed in the second conveying cylinder 30, a large end of the second T-shaped connecting rod 33 is disposed in the second cylindrical piston 32, the second T-shaped connecting rod 33 passes through the second cylindrical piston 32, a small end of the second T-shaped connecting rod 33 is fixedly connected with the second sheet-shaped piston 31, the second T-shaped connecting rod 33 is capable of sliding relative to the second cylindrical piston 32, and when the second sheet-shaped piston 31 moves to the right, the large end of the second T-shaped connecting rod 33 abuts against the inner side of the end of the second cylindrical piston 32, so that the second cylindrical piston 32 can be pulled to move synchronously.
The first and second transfer cylinders 20 and 30 are symmetrically disposed at both ends of the double rod hydraulic cylinder 10.
First combined sealing rings (not shown in the figure) are arranged between the first sheet piston 21 and the first conveying cylinder 20 and between the first cylindrical piston 22 and the first conveying cylinder 20; similarly, second combined seal rings 42 and 41 are provided between the second disc piston 31 and the second cylinder 30, and between the second cylindrical piston 32 and the second cylinder 30. The first combined sealing ring and the second combined sealing ring have the same structure, fig. 6 shows a schematic layout of combined sealing, the second combined sealing ring 41 includes a V-shaped cloth clamping sealing ring 411 and a U-shaped sealing ring 412, a spring leaf 413 with a U-shaped cross section is arranged in a groove of the U-shaped sealing ring 412, and the V-shaped cloth clamping sealing ring 411 is arranged on one side of an opening of the U-shaped sealing ring 412. Cloth sealing washer 411 is pressed from both sides to the V type is used for striking off the powder, makes the powder get into the sealed volume greatly reduced of main part, and U type sealing washer 412 is sealed for the main part, compensates through spring leaf 413 sealedly, for U type sealing washer 412 provides reasonable resilience force, U type sealing washer 412 outward appearance covers self-lubricating wear-resistant material, both can reach good sealed effect, can effectively increase sealed life again. The V-shaped cloth clamping seal ring of the first combined seal ring and the V-shaped cloth clamping seal ring of the second combined seal ring are respectively arranged close to the first accommodating space 203 or the second accommodating space 303.
As described above, exemplary embodiments of the present invention are described in detail with reference to the accompanying drawings. It should be understood that the invention is not intended to be limited to the details shown. Equivalent or similar changes in the structure and features of the exemplary embodiments may be made without departing from the spirit and scope of the invention, which shall also fall within the scope of protection defined by the claims appended hereto.
Claims (5)
1. A pull-type powder pressurizing and conveying device is characterized by comprising a double-rod hydraulic cylinder, a first conveying cylinder and a second conveying cylinder,
the double-rod hydraulic cylinder is positioned between the first conveying cylinder and the second conveying cylinder;
the first conveying cylinder is provided with a first normal-pressure feeding hole and a first high-pressure discharging hole, a first sheet-shaped piston and a first cylindrical piston are arranged in the first conveying cylinder, a first accommodating space for storing powder can be formed between the first sheet-shaped piston and the first cylindrical piston, and when the first sheet-shaped piston and the first cylindrical piston move in the first conveying cylinder, the first accommodating space can be respectively communicated with the first normal-pressure feeding hole and the first high-pressure discharging hole;
a second normal-pressure feeding hole and a second high-pressure discharging hole are formed in the second conveying cylinder, a second flaky piston and a second cylindrical piston are arranged in the second conveying cylinder, a second accommodating space for storing powder can be formed between the second flaky piston and the second cylindrical piston, and when the second flaky piston and the second cylindrical piston move in the second conveying cylinder, the second accommodating space can be communicated with the second normal-pressure feeding hole and the second high-pressure discharging hole respectively;
a left piston rod of the double-rod hydraulic cylinder is fixedly connected with the first flaky piston, and a right piston rod of the double-rod hydraulic cylinder is fixedly connected with the second flaky piston;
and a first driving mechanism and a second driving mechanism for driving the first cylindrical piston and the second cylindrical piston to move are respectively arranged in the first conveying cylinder and the second conveying cylinder.
2. The pulling-type powder pressurized conveying device according to claim 1, wherein a first T-shaped connecting rod is disposed in the first conveying cylinder, a large end of the first T-shaped connecting rod is disposed in the first cylindrical piston, the first T-shaped connecting rod penetrates through the first cylindrical piston, a small end of the first T-shaped connecting rod is fixedly connected with the first sheet-shaped piston, and the first T-shaped connecting rod can slide relative to the first cylindrical piston;
the second conveying cylinder is internally provided with a second T-shaped connecting rod, the large end of the second T-shaped connecting rod is arranged in the second cylindrical piston, the second T-shaped connecting rod penetrates through the second cylindrical piston, the small end of the second T-shaped connecting rod is fixedly connected with the second flaky piston, and the second T-shaped connecting rod can slide relative to the second cylindrical piston.
3. The pulling-type powder pressurized conveying device according to claim 1, wherein the first conveying cylinder and the second conveying cylinder are symmetrically disposed at both ends of the double-rod hydraulic cylinder.
4. The pulling-type powder pressurized conveying device according to claim 1, wherein first combined sealing rings are provided between the first sheet-like piston and the first conveying cylinder, and between the first cylindrical piston and the first conveying cylinder; and second combined sealing rings are arranged between the second sheet-shaped piston and the second conveying cylinder and between the second cylindrical piston and the second conveying cylinder.
5. The pulling-type powder conveying device according to claim 4, wherein the first and second combined sealing rings comprise a V-shaped cloth-sandwiched sealing ring and a U-shaped sealing ring, a spring piece having a U-shaped cross section is provided in a groove of the U-shaped sealing ring, and the V-shaped cloth-sandwiched sealing ring is provided on an opening side of the U-shaped sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920243577.3U CN209853328U (en) | 2019-02-26 | 2019-02-26 | Pulling type powder pressurizing and conveying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920243577.3U CN209853328U (en) | 2019-02-26 | 2019-02-26 | Pulling type powder pressurizing and conveying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209853328U true CN209853328U (en) | 2019-12-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920243577.3U Active CN209853328U (en) | 2019-02-26 | 2019-02-26 | Pulling type powder pressurizing and conveying device |
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| Country | Link |
|---|---|
| CN (1) | CN209853328U (en) |
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2019
- 2019-02-26 CN CN201920243577.3U patent/CN209853328U/en active Active
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