CN221299559U - Back pressure testing device of blower - Google Patents
Back pressure testing device of blower Download PDFInfo
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- CN221299559U CN221299559U CN202323191905.5U CN202323191905U CN221299559U CN 221299559 U CN221299559 U CN 221299559U CN 202323191905 U CN202323191905 U CN 202323191905U CN 221299559 U CN221299559 U CN 221299559U
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- blower
- piston cylinder
- back pressure
- cylinder body
- guide shaft
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- 238000012360 testing method Methods 0.000 title claims abstract description 52
- 230000005484 gravity Effects 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 11
- 238000007664 blowing Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000009360 aquaculture Methods 0.000 description 1
- 244000144974 aquaculture Species 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The utility model discloses a blower backpressure testing device, which belongs to the field of performance testing of blowers; the problems of unreliable measurement results, inconvenient adjustment, poor adaptability to working conditions, high test cost and the like of the conventional test device are solved. The blower backpressure testing device comprises a columnar piston cylinder body which is penetrated up and down, and a columnar counterweight component is arranged in the piston cylinder body and is positioned above an air outlet of a tested blower; the counterweight component can passively move upwards along the fixed guide shaft and can also fall on a support piece with a vent hole at the bottom of the piston cylinder body by self weight; when the air flow is detected, the air from the air blower is blown upwards vertically without leakage, and the air flow value of the air blower is obtained according to the gravity of the weight assembly. The method can be used for predicting whether the wind power reaches the index before the blower is put into practical scenes, so that unnecessary economic loss caused by unqualified products is avoided.
Description
Technical Field
The utility model belongs to the field of performance test of blowers, and particularly relates to a backpressure test device of a blower.
Background
In aquaculture and sewage treatment, the bottom of the water tank needs to be ventilated by using a blower, the depth of the water tank at the air outlet of the blower is different, and the wind power after the blower is started is also different. When the wind output generated by the selected blower does not meet the requirement, the gas cannot enter the water tank, but the surge phenomenon of the blower can be caused, and the blower is damaged. Therefore, before the blower leaves the factory, the wind output generated when the blower is started needs to be tested.
At present, the wind power of the air outlet of the existing blower mainly has two detection means: 1. the pressure sensor is used for measuring the pressure in the outlet pipeline of the blower, and the measuring mode is different from the real working condition, so that the blower which is qualified in detection is easily not adapted to the real working condition. 2. The back pressure valve is adopted to simulate the pressure, the existing back pressure valve is a spring type back pressure valve, a lever type back pressure valve and the like, the single back pressure valve corresponds to the single back pressure value, the adaptability to the working conditions of variable back pressure or adjustable back pressure is poor, the back pressure valves with different specification requirements are needed for different outlet pressures of different blowers, the replacement is difficult naturally, and the cost is increased.
Disclosure of Invention
The present utility model aims to remedy these drawbacks of the previous test modes: the measurement result deviates too much from reality; the testing device is inconvenient to adjust, poor in adaptability to working conditions, high in testing cost and the like.
A better solution is proposed for this: the method is characterized in that whether the blower can work normally is detected by adopting the pressure of the blower in the actual water depth state.
The back pressure testing device of the air blower is placed at the upper position of an air outlet of the tested air blower when in use, and air from the air blower is blown into an air inlet through hole of the back pressure testing device from the lower position of the back pressure testing device in a vertical and upward mode without leakage; the back pressure testing device comprises a columnar piston cylinder body which is penetrated up and down, a columnar counterweight component with the same nominal value of the external dimension of the section is arranged in the piston cylinder body, the counterweight component freely falls on a supporting piece at the bottom of the piston cylinder body when no external force exists, but the counterweight component can be moved upwards passively in the piston cylinder body; the support piece of the counterweight component is fixedly arranged at the bottom of the piston cylinder body and is provided with an air inlet through hole which is connected with the blower; when the air inlet blows the counterweight component in the piston cylinder body to move upwards, the wind outlet force of the blower is equivalent to the gravity of the counterweight component. Thereby estimating whether the wind output of the blower reaches the standard. This is the structure and principle of the backpressure testing device.
Furthermore, the back pressure testing device is also provided with a guide shaft when the counterweight assembly moves vertically, and the guide shaft passes through the central through hole of the whole counterweight assembly; the lower end of the guide shaft is fixed on a support piece at the bottom of the piston cylinder body, and the upper end of the guide shaft is limited in the horizontal direction by a central through hole of a support frame of the guide shaft so as to keep the guide shaft in a vertical state all the time. Therefore, the whole device is more stable and operates smoothly.
The vertical direction of the supporting frame is a plurality of supporting columns with evenly distributed circumferences, the upper end of the supporting frame is a cover plate with a central through hole which is horizontally placed, and the lower end of the supporting column and the top plane of the piston cylinder body are tightly connected to form a supporting frame of a stable guiding shaft together with the cover plate; a shaft sleeve for installing a guide shaft is arranged at the central through hole of the support column cover plate; the guide shaft passes through the central through hole of the shaft sleeve and extends into the central through hole of the counterweight assembly of the piston cylinder until being fixed on the support member of the counterweight assembly.
Preferably, the support columns of the support frame are two columns symmetrical to two sides of the guide shaft.
Further, the counterweight assembly comprises a plurality of counterweights and sealing guide blocks positioned at the bottoms of the counterweights; the sealing guide block is provided with a groove for installing the sealing ring and moving along with the sealing guide block on the inner side surface of the piston cylinder body, so that the wind is prevented from leaking in the pipeline before blowing the counterweight component. The number of the balancing weights is configured according to the wind output force which needs to be achieved when the tested blower is specifically applied.
Further, an exhaust port is formed in the side face of the piston cylinder body; when the counterweight assembly is blown up by the wind from the blower, the wind is discharged therefrom as it moves up to the exhaust port on the side of the piston cylinder; and each strip-shaped exhaust port is provided with an exhaust pipe so as to directly guide the wind discharged during testing to a preset place.
Preferably, the exhaust port on the side surface of the piston cylinder body is a strip-shaped exhaust port with an upward gradually increased opening, because the greater the wind force is, the higher the counterweight assembly is blown, and the greater the air output of the exhaust port is; preferably two symmetrical exhaust ports are provided,
Further, an air inlet pipe with the air outlet vertically upwards is arranged below the counterweight component and the supporting piece of the counterweight component; the air inlet pipe is connected with the air outlet of the air blower and is used for being conveniently connected with the air blower outlets with various calibers and the air outlet is blown to the counterweight assembly.
The test procedure using the backpressure testing device of the present embodiment is as follows: firstly, converting the water pressure of an actual scene into the wind output force which the blower should have according to the water pressure of the actual scene; secondly, adding a corresponding number of balancing weights according to the wind power which should be achieved by the blower; thirdly, connecting an air outlet of the air blower with an air inlet pipe of the back pressure testing device, and then starting the air blower; fourth, regulating a plurality of parameters such as the rotating speed, the power and the like of the blower to proper values until the counterweight assembly can be blown to move upwards, so that the wind output force of the blower can be used at the water depth of an actual application scene, and the condition that the back pressure of the blower is qualified is indicated; if the counterweight assembly can not be blown all the time to move upwards in the reverse direction, the air outlet force of the blower is not up to standard.
According to the technical scheme of the series of blower back pressure testing devices, the adjustment of different back pressure values can be realized as long as the number of the balancing weights is increased or reduced, and the testing of the back pressure values of the blowers required by different actual working conditions is realized. The device has the advantages of feasible testing principle, ingenious structure, convenient operation, accurate testing result, large back pressure adjusting range, strong capability of adapting to working conditions and reduced testing cost. The testing device well solves the defects existing in the background technology.
Drawings
The overall schematic of the external appearance of the backpressure testing device of the blower of FIG. 1
Internal structure schematic diagram of back pressure testing device of blower of fig. 2
FIG. 3 is a schematic view of the apparent position of the counterweight assembly within the piston cylinder when blown up (left view in FIG. 2)
The labels in the column diagrams are respectively:
1a support; 2, a counterweight assembly; 3, an exhaust pipe; 4, an exhaust port; 5 supporting frames; 6, a cover plate; 7, guiding a shaft; 8, shaft sleeve; 9 supporting columns; a 10 piston cylinder; 11 balancing weights; 12 sealing the guide block; 13, sealing rings; 14 air inlet pipe
Examples
The embodiment discloses a back pressure testing device of a blower, the appearance of the back pressure testing device is generally shown in fig. 1, the internal structure is shown in fig. 2, the back pressure testing device comprises a columnar piston cylinder body 10 which is penetrated up and down, a columnar counterweight component 2 with the same nominal value of the external dimension of the section is arranged in the piston cylinder body 10, and the back pressure testing device is cylindrical and is positioned above an air outlet of the blower to be tested; the counterweight assembly 2 can be moved upwards passively and reversely, and can only freely fall on a support piece 1 of the counterweight assembly when no external force exists, and an air inlet through hole is formed in the support piece 1; although the support member 1 of the counterweight assembly may be the bottom of the piston cylinder 10 directly, in this embodiment, the support member 1 of the counterweight assembly is additionally arranged at the bottom of the piston cylinder; in the back pressure testing device, in order to facilitate the connection with various blower calibers and ensure that the air outlet of the blower is all blown to the counterweight assembly 2, an air inlet pipe 14 with the air outlet vertically upwards is arranged below the air inlet through hole of the counterweight assembly support 1; the air inlet pipe 14 is connected with an air outlet of the blower and an air inlet through hole of the supporting piece 1; when in detection, the air from the blower is blown vertically upwards without leakage, and the appearance counterweight assembly 2 is in a state of being blown up as shown in fig. 3; the wind output value of the blower is naturally known according to the gravity of the counterweight assembly 2.
In this embodiment, a vertical guide shaft 7 is disposed at the central axis of the piston cylinder 10, the bottom of the guide shaft 7 is fixed to the support member 1 of the weight assembly and passes through the central through hole of the weight assembly 2, and the upper end of the guide shaft 7 passes through the top central through hole of the support frame 5 fixedly seated on the top end plane of the piston cylinder 10, so that the weight assembly 2 moves up and down along the guide shaft 7.
The support frame 5 in the embodiment comprises vertically arranged support columns 9 which are symmetrically arranged relative to the guide shaft 7, wherein a cover plate 6 with a central through hole which is horizontally arranged is arranged at the top of the support column 9, and is a limiting plate of the guide shaft 7 in the horizontal direction; at the central through hole of the support column cover plate 6, a shaft sleeve 8 is arranged for installing a guide shaft 7, the guide shaft 7 passes through the shaft sleeve 8 to extend into a piston cylinder 10 and then passes through the central through hole of the counterweight assembly 2 to be fixed on the support piece 1 of the counterweight assembly; the support columns 9 are symmetrically fixed on the upper end plane of the piston cylinder body 10, so that the whole device is more stable and operates smoothly.
In this embodiment, the side of the piston cylinder 10 is provided with 2 symmetrical exhaust ports 4, and each exhaust port 4 is provided with an exhaust pipe 3, as shown in fig. 3; when the counterweight assembly 2 is blown up by the wind from the blower and moves up to the exhaust port 4 that meets the side of the piston cylinder 10, the wind is discharged therefrom as shown in the state diagram of the counterweight assembly as shown in fig. 3; in this embodiment, the exhaust port 4 is a strip-shaped exhaust port 4, and the specific shape of the strip-shaped exhaust port 4 is shown in fig. 3.
In this embodiment, the counterweight assembly 2 includes a plurality of counterweights 11 and a sealing guide block 12 located at the bottom of the counterweights 11; the seal guide 12 is provided with a groove for mounting the seal ring 13 and moving along with the seal guide 12 on the column side of the piston cylinder 10, ensuring that no air is leaked from the duct when the blower has not yet blown the counterweight assembly 2 to the exhaust port 4 on the side in question.
The back pressure test device of this embodiment is used in the following test manner: firstly, converting the water pressure of an actual scene into the wind output force which the blower should have according to the water pressure of the actual scene; secondly, adding a corresponding number of balancing weights 11 according to the wind output force which should be achieved by the blower; thirdly, connecting an air outlet of the air blower with an air inlet pipe 14 of the back pressure testing device, and then starting the air blower; fourth, regulating a plurality of parameters such as the rotating speed, the power and the like of the blower to proper values until the counterweight assembly 2 can be blown to move upwards, so that the wind output of the blower can be indicated, and the blower can be used at the water depth of an actual application scene, namely that the back pressure of the blower is qualified; if the counterweight assembly 2 can not be blown all the time and moves upwards in the reverse direction, the air outlet force of the blower does not reach the standard.
The back pressure testing device of the blower designed by simulating the actual working condition can be further developed under the inspiring of the utility model to obtain a better design conception, and the back pressure testing device also belongs to the protection scope of the utility model, for example, the support columns 9 in the embodiment are bilaterally symmetrical, and three support columns with evenly distributed circumferences, even more support columns 9 with evenly distributed circumferences and the like can be arranged.
By using the blower back pressure testing device in the embodiment, the adjustment of different back pressure values can be realized only by increasing or reducing the number of the balancing weights, and the testing requirements of different working conditions are met. The testing device disclosed in the embodiment has the advantages of ingenious structure, convenience in operation, accurate testing result, large back pressure adjusting range, strong capability of adapting to working conditions and capability of reducing testing cost. The blower backpressure testing device disclosed by the embodiment well solves the defects existing in the background technology.
Claims (8)
1. The back pressure testing device of the blower is characterized by comprising a columnar piston cylinder body which is penetrated up and down, wherein a columnar counterweight component with the same nominal value of the external dimension of the section is arranged in the piston cylinder body, the counterweight component freely falls on a supporting piece at the bottom of the piston cylinder body when no external force exists, but the counterweight component can passively move upwards in the piston cylinder body; the support piece of the counterweight component is fixedly arranged at the bottom of the piston cylinder body and is provided with an air inlet through hole which is connected with the blower; when the air inlet blows the counterweight component in the piston cylinder body to move upwards, the wind outlet force of the blower is equivalent to the gravity of the counterweight component.
2. The back pressure testing apparatus of a blower of claim 1, further comprising a guide shaft passing through a central through hole of the entire weight assembly when the weight assembly is vertically moved; the lower end of the guide shaft is fixed on a support piece at the bottom of the piston cylinder body, and the upper end of the guide shaft is limited in the horizontal direction by a central through hole of a support frame of the guide shaft so as to keep the guide shaft in a vertical state all the time.
3. The back pressure testing device of the blower of claim 2, wherein the support frame of the guide shaft is fixedly seated on the top plane of the piston cylinder; the vertical direction of the support frame is provided with a plurality of support columns uniformly distributed along the circumference, the upper end of the support frame is provided with a cover plate with a central through hole, the lower end of the support column is fixedly connected with the plane of the top of the piston cylinder body, and then the support column and the cover plate form a support frame of a stable guide shaft; a shaft sleeve for installing a guide shaft is arranged at the central through hole of the support column cover plate; the guide shaft passes through the central through hole of the shaft sleeve and extends into the central through hole of the counterweight assembly of the piston cylinder until being fixed on the support member of the counterweight assembly.
4. A back pressure testing apparatus of a blower according to claim 3, wherein the support column is two columns symmetrical to both sides of the guide shaft.
5. A back pressure testing device for a blower according to any one of the preceding claims, wherein the weight assembly includes a plurality of weights and a sealing guide block located at the bottom of the weights; the sealing guide block is provided with a groove for installing the sealing ring and moving along with the sealing guide block on the inner surface of the piston cylinder body, so that air inlet is ensured not to leak in the pipeline before blowing the counterweight component.
6. The back pressure testing device of claim 5, wherein the piston cylinder has an exhaust port on a side thereof, and when the counterweight assembly is blown up by the wind from the blower, the wind is discharged therefrom and an exhaust pipe is provided for each exhaust port.
7. The back pressure testing device of the blower according to claim 6, wherein the exhaust port of the side surface of the piston cylinder is a bar-shaped exhaust port which is opened upward and is formed to be larger gradually, and two exhaust ports are symmetrically arranged at both sides of the piston cylinder.
8. The back pressure testing device of the blower according to claim 7, wherein, in order to be connected with the outlets of the blowers with respective calibers and to facilitate the air outlet of the blowers to be blown to the counterweight assembly entirely, an air inlet pipe with the air outlet vertically upward is installed below the air inlet through hole of the supporting member of the counterweight assembly; the air inlet pipe is connected with an air outlet of the blower and an air inlet through hole of the supporting piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323191905.5U CN221299559U (en) | 2023-11-27 | 2023-11-27 | Back pressure testing device of blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323191905.5U CN221299559U (en) | 2023-11-27 | 2023-11-27 | Back pressure testing device of blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221299559U true CN221299559U (en) | 2024-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323191905.5U Active CN221299559U (en) | 2023-11-27 | 2023-11-27 | Back pressure testing device of blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221299559U (en) |
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2023
- 2023-11-27 CN CN202323191905.5U patent/CN221299559U/en active Active
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