A digital pressure test device for detecting wind force at fan outlet

Abstract

The present invention provides a digital pressure test device for detecting the wind force at the outlet of a fan, which relates to the field of pressure testing technology, and includes: a fixed tube, an insert tube, and a digital pressure gauge; the fixed tube is welded and inserted into the air outlet duct of the fan, a first sealing sleeve is tightly clamped in an outer clamping groove, the insert tube is inserted into the fixed tube through a sleeve groove, and is hung by tightening two sets of tension springs, an adjusting rod is inserted into the rear end of the insert tube, an installation groove is provided on the inner side of the sleeve groove, and a second sealing sleeve is clamped in the installation groove, an adjusting tube is connected to one end of the digital pressure gauge, a metal hose is connected between the adjusting tube and the insert tube, and the insert tube is connected to the air outlet duct of the fan. The digital pressure gauge and the air outlet duct can be relatively rotated and adjusted, and the angle can also be adjusted, and it is convenient to disassemble and replace, which solves the problem that the pressure gauge is usually welded on the pipeline, which is not convenient for adjustment and observation, and when the digital pressure gauge is damaged, it is also troublesome to replace.

Description

Technical Field

[0001] The invention relates to the technical field of fan outlet pressure testing, and in particular to a digital display pressure testing device for detecting the wind force at the fan outlet. Background Art

[0002] The fan needs to detect the pressure of its air outlet duct when it leaves the factory and when it is used. For example, the patent with application number: CN213116816U discloses a coal mine ventilator wind pressure detection device, including a ventilation duct and a pressure detector arranged inside the ventilation duct, wherein a driving device that can drive the pressure detector to move inside the ventilation duct is fixed inside the ventilation duct, and the driving member is fixedly connected to the pressure detector. This coal mine ventilator wind pressure detection device can drive the pressure detector to move to any position inside the ventilation duct through the arranged driving device, thereby realizing the detection of the wind pressure value at any position inside the ventilation duct, avoiding the situation that the pressure detector can only detect the wind pressure value at one place inside the ventilation duct when in use, thereby improving the accuracy of the detection of the wind pressure value inside the ventilation duct, thereby better controlling the ventilator.

[0003] However, at present, traditional digital pressure gauges are usually welded to the fan outlet pipe through pipes. Since they are used in different positions, it is not convenient to adjust and observe. At the same time, when the digital pressure gauge is damaged, replacement and installation are also troublesome. Summary of the invention

[0004] In view of this, the present invention provides a digital pressure testing device for detecting the wind force at the fan outlet, which can be relatively rotated and adjusted with the air outlet pipe, and the angle can also be adjusted, and it is convenient to disassemble and replace.

[0005] The present invention provides a digital pressure test device for detecting the wind force at the outlet of a fan, which specifically comprises: a fan, a fixing tube, a first sealing sleeve, an inserting tube, a digital pressure gauge, a second sealing sleeve, and a tension spring;

[0006] The fixed tube is welded and inserted into the air outlet duct of the fan, an outer groove is provided at the outer end of the fixed tube, and the first sealing sleeve is tightly clamped in the outer groove, one end of the insert tube is provided with a sleeve groove, and is inserted into the fixed tube through the sleeve groove, and the fixed tube and the insert tube are tightened and hung by two groups of tension springs, the rear end of the insert tube is also provided with two groups of outer convex plates, the outer end of one group of outer convex plates is provided with a through hole, and the outer end of the other group of outer convex plates is provided with a threaded hole, and an adjusting rod is inserted, the inner side of the sleeve groove is provided with a mounting groove, and the second sealing sleeve is clamped in the mounting groove, and the front end surface of the second sealing sleeve A graphite sealing ring B is mounted on the upper card, one end of the digital pressure gauge is connected to an adjusting tube, a metal hose is connected between the adjusting tube and the insertion tube, and the insertion tube passes through the hole at the rear end of the insertion tube, through the through hole in the middle of the second sealing sleeve and the through hole in the middle of the first sealing sleeve in sequence, and through the through hole at the inner end of the fixed tube to be connected with the air outlet duct of the fan, the through hole at the inner end of the fixed tube and the through hole at the outer end of the insertion tube are respectively adapted to the outer diameter of the insertion tube, the inner diameter of the through hole in the middle of the first sealing sleeve is larger than the outer diameter of the insertion tube, and a graphite sealing ring A is mounted on the outer end surface of the first sealing sleeve.

[0007] Optionally, an annular groove is further provided on the outer wall of the fixed cylinder, and an outer ring is rotatably mounted in the annular groove, and hooks A are respectively connected to both sides of the outer ring. Two groups of opposite waist-round blocks are provided on the outer side of the insertion cylinder, and hooks B are respectively connected to the waist-round blocks, and the two ends of the tension spring are respectively hung on hooks A and hooks B.

[0008] Optionally, the graphite sealing ring A and the graphite sealing ring B are respectively 5 mm higher than the outer end surfaces of the first sealing sleeve and the second sealing sleeve, and when the insert sleeve is inserted into the fixed sleeve through two sets of tension springs, the graphite sealing ring B is in contact with the graphite sealing ring A.

[0009] Optionally, a connecting block is further provided on the adjusting tube, and a square hole is further provided in the connecting block.

[0010] Optionally, a spring is further installed at the rear end of the second sealing sleeve, and the circle at the other end of the spring is inserted into the arc-shaped circular groove in the installation groove.

[0011] Optionally, an arcuate annular groove is further provided on the outer wall of the second sealing sleeve, and a circle of ten groups of balls are provided in the arcuate annular groove, and the balls are embedded in the ring.

[0012] Optionally, the inner diameter of the through hole in the middle of the second sealing sleeve is larger than the outer diameter of the insertion tube, and two groups of rubber sealing rings are inlaid, and the rubber sealing rings are attached to the outer wall of the insertion tube.

[0013] Optionally, one end of the adjusting rod is a smooth rod structure, which slides and is inserted in the through hole, and the outer end is also connected to an adjusting handwheel. The middle is a square rod structure, whose width is smaller than the outer diameter of the smooth rod, and is slidably inserted in the square hole. The other end of the adjusting rod is a threaded structure, and is screwed into the threaded hole. Beneficial Effects

[0014] Compared with a traditional pressure gauge, the digital pressure testing device according to each embodiment of the present invention can be relatively rotated and adjusted with the air outlet pipe, and the angle can also be adjusted. It is also convenient for disassembly, assembly and replacement.

[0015] In addition, by inserting the insert sleeve at the outer end of the fixed sleeve and connecting it to the outer ring at the outer end of the fixed sleeve through two groups of tension springs, the rubber sealing ring in the middle through hole of the second sealing sleeve is attached to the insertion tube for sealing. The outer ring and the insert sleeve can be rotated to drive the digital pressure gauge to adjust the direction, and under the action of the spring, the graphite sealing ring B on the second sealing sleeve is tightly attached to the graphite sealing ring A on the first sealing sleeve for sealing. At the same time, the second sealing sleeve is rotatably installed in the installation groove through ten groups of balls. When the insert sleeve rotates, the second sealing sleeve and the insert sleeve can rotate relative to each other, thereby reducing the friction between the graphite sealing ring B and the graphite sealing ring A and improving the sealing performance.

[0016] In addition, by setting an adjustment rod, by rotating the adjustment hand wheel at the outer end of the adjustment rod, and under the action of the metal hose, the adjustment tube and the digital pressure gauge are driven to flip relative to the insert tube, thereby adjusting the angle of the digital pressure gauge.

[0017] In addition, the two sets of tension springs can be removed from between the fixed tube and the insertion tube, so that the insertion tube and the insertion tube can be pulled out from the fixed tube, and the insertion tube can be pulled out from the second sealing sleeve and the insertion tube, so that the digital pressure gauge and the insertion tube can be replaced and quickly installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0019] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0020] In the attached picture:

[0021] Figure 1 A schematic diagram showing the overall structure of an embodiment according to the present invention is shown;

[0022] Figure 2 The embodiment according to the present invention is shown Figure 1 The enlarged structural diagram at A in the middle;

[0023] Figure 3 The embodiment according to the present invention is shown Figure 1 Schematic diagram of the structure after the middle insert tube and the fixed tube are disassembled;

[0024] Figure 4 The embodiment according to the present invention is shown Figure 3 The enlarged structural diagram at B in the middle;

[0025] Figure 5 It shows a schematic structural diagram of a cutaway side of a fixed cylinder according to an embodiment of the present invention;

[0026] Figure 6 It shows a schematic diagram of the overall structure of the insert cylinder and the digital pressure gauge when the adjusting rod is pulled out from the insert cylinder according to an embodiment of the present invention;

[0027] Figure 7 The embodiment according to the present invention is shown Figure 6 A schematic diagram of the structure after cutting off one side of the middle insert tube;

[0028] Figure 8 It shows a schematic structural diagram of the insertion tube being drawn out from the insertion tube according to an embodiment of the present invention;

[0029] Fig. 9 A schematic diagram of the overall structure of the second sealing sleeve after one end of the ring is cut off according to an embodiment of the present invention is shown.

[0030] Reference numerals list

[0031] 1. Fan; 2. Fixed cylinder; 201. External slot; 202. Circular ring groove; 203. External ring; 2031. Hook A; 3. First sealing sleeve; 301. Graphite sealing ring A; 4. Inserted cylinder; 401. Set slot; 402. Mounting slot; 4021. Arc-shaped circular groove; 403. External convex plate; 4031. Perforation; 4032. Threaded hole; 404. Waist block; 4041. Hook B; 5. Digital pressure gauge; 501. Adjusting tube; 5011. Connecting block; 5012. Square hole; 502. Metal hose; 503. Inserting tube; 6. Second sealing sleeve; 601. Graphite sealing ring B; 602. Spring; 603. Arc-shaped ring groove; 604. Ring; 6041. Ball; 605. Rubber sealing ring; 7. Adjusting rod; 8. Tension spring. DETAILED DESCRIPTION

[0032] In order to make the purpose, scheme and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described in conjunction with the drawings of the specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the usual meanings in the art. The same reference numerals in the drawings represent the same components.

[0033] Example: Please refer to Figures 1 to 9 :

[0034] The present invention proposes a digital pressure test device for detecting the wind force at the outlet of a fan, comprising: a fan 1, a fixing tube 2, a first sealing sleeve 3, an inserting tube 4, a digital pressure gauge 5, a second sealing sleeve 6, and a tension spring 8;

[0035] The fixed cylinder 2 is welded and inserted into the air outlet duct of the fan 1. The outer end of the fixed cylinder 2 is provided with an outer card groove 201, and the first sealing sleeve 3 is tightly clamped in the outer card groove 201. One end of the insert cylinder 4 is provided with a sleeve groove 401, and is inserted into the fixed cylinder 2 through the sleeve groove 401. The fixed cylinder 2 and the insert cylinder 4 are tightened and hung by two groups of tension springs 8. The rear end of the insert cylinder 4 is also provided with two groups of outer convex plates 403. The outer end of one group of outer convex plates 403 is provided with a through hole 4031, and the outer end of the other group of outer convex plates 403 is provided with a threaded hole 4032, and an adjusting rod 7 is inserted. The inner side of the sleeve groove 401 is provided with a mounting groove 402, and the second sealing sleeve 6 is clamped in the mounting groove 402. The second sealing sleeve 6 A graphite sealing ring B601 is embedded and clamped on the front end face, an adjusting tube 501 is connected to one end of the digital pressure gauge 5, a metal hose 502 is connected between the adjusting tube 501 and the insertion tube 503, and the insertion tube 503 passes through the hole at the rear end of the insertion tube 4 in sequence, passes through the through hole in the middle of the second sealing sleeve 6 and the through hole in the middle of the first sealing sleeve 3, and passes through the through hole at the inner end of the fixed tube 2 to be connected with the air outlet duct of the fan 1, the through hole at the inner end of the fixed tube 2 and the through hole at the outer end of the insertion tube 4 are respectively adapted to the outer diameter of the insertion tube 503, the inner diameter of the through hole in the middle of the first sealing sleeve 3 is larger than the outer diameter of the insertion tube 503, and a graphite sealing ring A301 is embedded and clamped on the outer end face of the first sealing sleeve 3.

[0036] In addition, according to an embodiment of the present invention, Figure 5 As shown, an annular groove 202 is also provided on the outer wall of the fixed tube 2, and an outer ring 203 is rotatably mounted in the annular groove 202, and hooks A2031 are respectively connected to the two sides of the outer ring 203, and two groups of opposite waist blocks 404 are provided on the outer side of the inserted tube 4, and hooks B4041 are respectively connected to the waist blocks 404, and the two ends of the tension spring 8 are respectively hung on the hook A2031 and the hook B4041. When the inserted tube 4 is inserted into the fixed tube 2, the two groups of tension springs 8 are used to tightly pull the inserted tube 4 onto the fixed tube 2. At the same time, when the inserted tube 4 is rotated, it is convenient to make the outer ring 203 rotate synchronously on the outer wall of the fixed tube 2, thereby driving the two groups of tension springs 8 to rotate synchronously to prevent the two groups of tension springs 8 from being twisted.

[0037] In addition, according to an embodiment of the present invention, Figure 4 and Figure 6As shown, a connecting block 5011 is also provided on the adjusting tube 501, and a square hole 5012 is also provided in the connecting block 5011. One end of the adjusting rod 7 is a smooth rod structure, which is slidably inserted in the through hole 4031, and an adjusting handwheel is also connected to the outer end. The middle is a square rod structure, the width of which is smaller than the outer diameter of the smooth rod, and is slidably inserted in the square hole 5012. The other end of the adjusting rod 7 is a threaded structure, and is screwed into the threaded hole 4032, which is convenient for the installation and disassembly of the adjusting rod 7. At the same time, by rotating the adjusting handwheel at the outer end of the adjusting rod 7 and under the action of the metal hose 502, the adjusting tube 501 and the digital pressure gauge 5 are driven to flip relative to the insert tube 4, thereby adjusting the angle of the digital pressure gauge 5.

[0038] In addition, according to an embodiment of the present invention, Figure 5 , Figure 7 and Fig. 9 As shown, a spring 602 is also installed at the rear end of the second sealing sleeve 6, and the circle at the other end of the spring 602 is inserted into the arc-shaped circular groove 4021 in the installation groove 402. The graphite sealing ring A301 and the graphite sealing ring B601 are respectively 5 mm higher than the outer end faces of the first sealing sleeve 3 and the second sealing sleeve 6, and when the insert sleeve 4 is inserted into the fixed sleeve 2 through two sets of tension springs 8, the graphite sealing ring B601 is in contact with the graphite sealing ring A301. After the insert sleeve 4 is inserted into the fixed sleeve 2 through the sleeve groove 401 and connected through two sets of tension springs 8, the graphite sealing ring B601 can be in contact with the graphite sealing ring A301 under the action of the spring 602, thereby sealing.

[0039] In addition, according to an embodiment of the present invention, Figure 7 and Fig. 9 As shown, an arcuate annular groove 603 is further provided on the outer wall of the second sealing sleeve 6, and a circle of ten groups of balls 6041 are provided in the arcuate annular groove 603, and the balls 6041 are embedded in the ring 604. When the insert sleeve 4 rotates, the second sealing sleeve 6 rotates relative to the inner wall of the insert sleeve 4 under the action of the ten groups of balls 6041, thereby reducing the friction between the graphite sealing ring B601 and the graphite sealing ring A301 and improving the sealing performance.

[0040] In addition, according to an embodiment of the present invention, Figure 7 and Fig. 9 As shown, the inner diameter of the through hole in the middle of the second sealing sleeve 6 is larger than the outer diameter of the insertion tube 503, and is inlaid with two sets of rubber sealing rings 605, and the rubber sealing rings 605 are attached to the outer wall of the insertion tube 503. The two sets of rubber sealing rings 605 are used to seal the insertion tube 503 and the second sealing sleeve 6, and it is also convenient to pull the insertion tube 503 out of the through hole in the middle of the second sealing sleeve 6.

[0041] Specific usage and function of this embodiment: In the present invention, the insertion tube 503 is sequentially passed through the hole at the rear end of the insert tube 4 and through the through hole in the middle of the second sealing sleeve 6, so that the insertion tube 503 and the two groups of rubber sealing rings 605 in the through hole in the middle of the second sealing sleeve 6 are in contact with each other, and then the insertion tube 503 is passed through the through hole in the middle of the first sealing sleeve 3, and through the through hole at the inner end of the fixed tube 2 to be connected with the air outlet duct of the fan 1, and at the same time, the insert tube 4 is inserted into the fixed tube 2 through the sleeve groove 401, and then the two groups of tension springs 8 are respectively hung on the hooks A2031 at both ends of the outer ring 203 and the hooks B4041 at both ends of the insert tube, and under the action of the spring 602, the graphite sealing ring B601 is in contact with the graphite sealing ring A301, so as to perform sealing, and the outer ring 203 and the insert tube 4 can be rotated to drive the digital pressure display The gauge 5 adjusts the direction. When the insert tube 4 rotates, the second sealing sleeve 6 rotates relative to the inner wall of the insert tube 4 under the action of ten groups of balls 6041, thereby reducing the friction between the graphite sealing ring B601 and the graphite sealing ring A301 and improving the sealing performance. By rotating the adjusting hand wheel at the outer end of the adjusting rod 7 and under the action of the metal hose 502, the adjusting tube 501 and the digital pressure gauge 5 are driven to flip relative to the insert tube 4, thereby adjusting the angle of the digital pressure gauge 5. When the digital pressure gauge 5 or the insertion tube 503 is damaged, the two groups of tension springs 8 are removed from between the fixed tube 2 and the insert tube 4, so that the insertion tube 503 and the insert tube 4 can be pulled out from the fixed tube 2, and the insertion tube 503 can be pulled out from the second sealing sleeve 6 and the insert tube 4, so that the digital pressure gauge 5 or the insertion tube 503 can be replaced and quickly reinstalled.

[0042] Finally, it should be noted that when describing the position of each component and the matching relationship between them, the present invention usually takes one / a pair of components as an example. However, those skilled in the art should understand that such position, matching relationship, etc. are also applicable to other components / other pairs of components.

[0043] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. A digital pressure test device for detecting the wind force at the fan outlet, characterized in that: include: Fan (1), fixed tube (2), first sealing sleeve (3), insert tube (4), digital pressure gauge (5), second sealing sleeve (6), tension spring (8); The fixed cylinder (2) is welded and inserted into the air outlet duct of the fan (1); an outer groove (201) is provided at the outer end of the fixed cylinder (2), and the first sealing sleeve (3) is tightly clamped in the outer groove (201); one end of the inserted cylinder (4) is provided with a sleeve groove (401), and is inserted into the fixed cylinder (2) through the sleeve groove (401); the fixed cylinder (2) and the inserted cylinder (4) are tensioned and hung by two groups of tension springs (8); the rear end of the inserted cylinder (4) is also provided with two groups of outer convex plates (403); the outer end of one group of outer convex plates (403) is provided with a through hole (4031); the outer end of the other group of outer convex plates (403) is provided with a threaded hole (4032), and an adjusting rod (7) is inserted therethrough; the inner side of the sleeve groove (401) is provided with a mounting groove (402), and the mounting groove (402) is clamped with a second sealing sleeve (6) , a graphite sealing ring B (601) is embedded and clamped on the front end surface of the second sealing sleeve (6), one end of the digital pressure gauge (5) is connected to a regulating tube (501), a metal hose (502) is connected between the regulating tube (501) and the insertion tube (503), and the insertion tube (503) passes through the hole at the rear end of the insertion tube (4), through the middle through hole of the second sealing sleeve (6) and the middle through hole of the first sealing sleeve (3), and through the through hole at the inner end of the fixed sleeve (2) to be connected with the air outlet duct of the fan (1), the through hole at the inner end of the fixed sleeve (2) and the through hole at the outer end of the insertion sleeve (4) are respectively adapted to the outer diameter of the insertion tube (503), the inner diameter of the middle through hole of the first sealing sleeve (3) is larger than the outer diameter of the insertion tube (503), and a graphite sealing ring A (301) is embedded and clamped on the outer end surface of the first sealing sleeve (3); The outer wall of the fixed cylinder (2) is also provided with an annular groove (202), and an outer ring (203) is rotatably mounted in the annular groove (202), and hooks A (2031) are respectively connected to both sides of the outer ring (203). Two groups of opposite waist-shaped blocks (404) are provided on the outer side of the insertion cylinder (4), and hooks B (4041) are respectively connected to the waist-shaped blocks (404), and the two ends of the tension spring (8) are respectively hung on the hooks A (2031) and the hooks B (4041).

2. The digital pressure test device for detecting the wind force at the fan outlet according to claim 1, characterized in that: The graphite sealing ring A (301) and the graphite sealing ring B (601) are respectively 5 mm higher than the outer end surfaces of the first sealing sleeve (3) and the second sealing sleeve (6), and when the insert sleeve (4) is inserted into the fixed sleeve (2) via two sets of tension springs (8), the graphite sealing ring B (601) and the graphite sealing ring A (301) are in contact with each other.

3. The digital pressure test device for detecting the wind force at the fan outlet according to claim 1, characterized in that: The regulating tube (501) is further provided with a connecting block (5011), and a square hole (5012) is further provided in the connecting block (5011).

4. The digital pressure test device for detecting the wind force at the fan outlet according to claim 1, characterized in that: A spring (602) is also installed at the rear end of the second sealing sleeve (6), and the circle at the other end of the spring (602) is inserted into the arc-shaped circular groove (4021) in the installation groove (402).

5. The digital pressure test device for detecting the wind force at the fan outlet according to claim 4, characterized in that: An arcuate annular groove (603) is also provided on the outer wall of the second sealing sleeve (6), and a circle of ten groups of balls (6041) are provided in the arcuate annular groove (603), and the balls (6041) are embedded in the ring (604).

6. The digital pressure test device for detecting the wind force at the fan outlet according to claim 5, characterized in that: The inner diameter of the through hole in the middle of the second sealing sleeve (6) is larger than the outer diameter of the insertion tube (503), and two groups of rubber sealing rings (605) are inlaid therein, and the rubber sealing rings (605) are attached to the outer wall of the insertion tube (503).

7. The digital pressure test device for detecting the wind force at the fan outlet according to claim 6, characterized in that: One end of the adjusting rod (7) is a smooth rod structure, which is slidably inserted into the through hole (4031), and the outer end is also connected to an adjusting hand wheel. The middle is a square rod structure, the width of which is smaller than the outer diameter of the smooth rod, and is slidably inserted into the square hole (5012). The other end of the adjusting rod (7) is a threaded structure, and is screwed into the threaded hole (4032).

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