Device for detecting air tightness of pore channel of disc-shaped valve plate

Abstract

The utility model belongs to the technical field of machining, and provides a pore channel air tightness detection device for a disc-shaped valve plate, which is used for detecting the air tightness of a finished valve plate and ensuring the qualified rate of supplied products. According to the technical scheme, a lower distribution base is fixedly installed on the upper surface of a base and provided with a center positioning column and a positioning pin hole, a stand column is fixedly installed on the base, a vertical groove plate is fixedly installed on the front face of the stand column, and an eccentric wheel is located on the upper portion of the front face of the vertical groove plate and eccentrically fixed to the end of a piston rod of a rotating air cylinder; a guide cylinder is fixedly installed in the middle of the front face of the vertical groove plate, a guide rod is slidably installed in the guide cylinder, the upper end of the guide rod makes contact with the bottom end of the eccentric wheel, an upper distribution base is fixedly installed at the lower end of the guide rod, the upper distribution base is connected with the vertical groove plate through a reset spring, a through hole air conveying channel is formed in the lower distribution base, and a through hole air outlet channel is formed in the upper distribution base. The air source supplies air to the through hole channels of the valve plate through the through hole air transmission channels and then supplies the air to the first barometer through the through hole air outlet channels.

Description

TECHNICAL FIELD

[0001] The utility model discloses a disc -shaped flow distribution disc's hole air tightness detection device belongs to the technical field of machining, specifically relates to disc -shaped flow distribution disc processing after the hole air tightness detection. BACKGROUND

[0002] Disc -shaped flow distribution disc is a kind of circular mechanical spare parts for controlling and distributing fluid, complex hole is designed in its interior generally, to adapt to higher pressure demand.And in use, these holes must guarantee complete air tightness, all holes are independent without collusion, to ensure the normal operation and service life of system.And due to the part in the process of casting formation may produce sand eye in steel, or due to the complex internal structure and adopt different manufacturing processing mode, may lead to hole air leakage or air stringing.Now there is no effective air tightness detection equipment for flow distribution disc, is mostly produced after forming and is directly shipped for product installation, and product installation is completed after whole product air tightness detection, then it is judged whether it is qualified, if unqualified, then it needs to be replaced, by actual detection, the qualified rate of supplied product is about 70%.And this 30% of unqualified product will lead to product enterprise waste more time cost to disassemble replacement and reassemble.And in order to ensure the qualified rate of flow distribution disc, to save the assembly time and cost of product production party, improve the product qualified rate of flow distribution disc production and manufacturing enterprise, make manufacturing processing enterprise have greater market competition advantage, in addition to the hardness rigidity and other properties of material, it is necessary to carry out air tightness detection after the part manufacturing processing is completed, therefore need a detection equipment specially used for flow distribution disc hole air tightness. CONTENT OF UTILITY MODEL

[0003] In order to solve one of the above technical defects, the utility model provides a disc -shaped flow distribution disc's hole air tightness detection device, carries out air tightness detection to finished product flow distribution disc, and ensures the qualified rate of supplied product.

[0004] In order to solve the above technical problem, the utility model adopts the technical scheme as follows: a disc -shaped flow distribution disc's hole air tightness detection device, including base, stand, vertical groove plate, rotary air cylinder, eccentric wheel, guide cylinder, guide rod, recovery spring, upper distribution seat, lower distribution seat, air cylinder valve seat, high pressure air valve seat and first air pressure gauge;

[0005] The upper surface of the base is fixedly installed with the lower distribution seat, the upper surface of the lower distribution seat is matched and attached to the bottom surface of the flow distribution disc to be detected, and the lower distribution seat is provided with a center positioning column and a positioning pin hole corresponding to the flow distribution disc to be detected;

[0006] The base is fixedly installed with the stand, and the stand is located at one side of the lower distribution seat, and the side of the stand facing the lower distribution seat is defined as the front side, and the front side of the stand is fixedly installed with the vertical groove plate;

[0007] A rotary cylinder is fixedly installed on the back of the column. The piston rod of the rotary cylinder passes through the column and the vertical groove plate to the upper front of the vertical groove plate. An eccentric wheel is located on the upper front of the vertical groove plate and is eccentrically fixed to the end of the piston rod of the rotary cylinder.

[0008] A guide cylinder is fixedly installed in the center of the front side of the vertical channel plate. A guide rod is slidably installed inside the guide cylinder. The upper end of the guide rod contacts the bottom end of the eccentric wheel. An upper distribution seat is fixedly installed at the lower end of the guide rod. The lower surface of the upper distribution seat matches and fits the top surface of the distribution plate to be tested. The top surface of the upper distribution seat is connected to the center of the front side of the vertical channel plate through at least two restoring springs.

[0009] The rotary cylinder controls the eccentric wheel to rotate, driving the guide rod to its lower limit stroke state so that the lower surface of the upper distribution seat at the lower end of the guide rod is sealed and fitted with the top surface of the distribution plate to be tested. When the rotary cylinder controls the eccentric wheel to rotate, driving the guide rod to its non-lower limit stroke state, the recovery spring drives the upper distribution seat to rise and disengage from the top surface of the distribution plate to be tested.

[0010] The lower distribution seat is provided with a through-hole air supply channel. One end of the through-hole air supply channel is connected to the through-hole channel window on the bottom surface of the distribution plate to be tested. The other end of the through-hole air supply channel extends through to the side wall of the lower distribution seat and is equipped with a first air inlet pipe interface.

[0011] The upper distribution seat is provided with a through-hole air outlet. One end of the through-hole air outlet is connected to the through-hole window on the top surface of the distribution plate to be tested. The other end of the through-hole air outlet extends through to the side wall of the upper distribution seat and is equipped with a first air outlet pipe interface. The first air outlet pipe interface is connected to a first pressure gauge through a pipe.

[0012] A horizontal frame plate is fixedly installed on the upper part of the column. A cylinder valve seat and a high-pressure air valve seat are installed on the horizontal frame plate. A first control handle is provided on the cylinder valve seat, and a second control handle is provided on the high-pressure air valve seat. Both the cylinder valve seat and the high-pressure air valve seat are connected to the air source through pipes. The cylinder valve seat is connected to the rotary cylinder through a pipe and controls the rotary cylinder through the first control handle. The high-pressure air valve seat is connected to the first air inlet pipe interface through a pipe and controls the start and stop of the air supply through the second control handle.

[0013] The upper distribution seat is also provided with a blind through-hole air supply channel and a blind through-hole air outlet channel. One end of each blind through-hole air supply channel and blind through-hole air outlet channel is connected to the two top windows of the blind hole channel of the distribution plate to be tested. The other end of each blind through-hole air supply channel and blind through-hole air outlet channel extends through to the side wall of the upper distribution seat and is respectively equipped with a second air inlet pipe interface and a second air outlet pipe interface. The second air inlet pipe interface is connected to the high-pressure air valve seat through a pipe, and the second air outlet pipe interface is connected to the second air pressure gauge through a pipe.

[0014] The upper distribution seat is slidably installed at the front lower part of the vertical groove plate through a track.

[0015] The upper distribution seat top end is fixed at the guide rod bottom end through a detachable threaded connection structure, and the lower distribution seat is fixed on the base through a plurality of detachable bolt connections.

[0016] The hole air tightness detection device of the disc-shaped flow distribution disc can detect the hole air tightness of the flow distribution disc, improve the finished product supply qualification rate, is convenient and simple to use, and has low manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be further described in detail in combination with the drawings;

[0018] Figure 1 The utility model discloses a structure schematic view. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, the technical scheme of the utility model will be clearly and completely described below in combination with the embodiment in the utility model, and obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment, and all other embodiments obtained by the person skilled in the art without making the creative labor based on the embodiment in the utility model all belong to the range of the utility model protection.

[0020] As Figure 1 The utility model discloses a hole air tightness detection device of disc-shaped flow distribution disc, including base 1, stand 2, vertical groove plate 3, rotary cylinder, eccentric wheel 4, guide cylinder 5, guide rod 6, recovery spring 7, upper distribution seat 8, lower distribution seat 9, cylinder valve seat 10, high pressure gas valve seat 11 and first air pressure table 12;

[0021] The upper surface of base 1 is fixedly installed with lower distribution seat 9, and the upper surface of lower distribution seat 9 is matched and attached to the bottom surface of the flow distribution disc to be detected, a center positioning column and a positioning pin hole corresponding to the flow distribution disc to be detected are arranged on the lower distribution seat 9, the center positioning column corresponds to the center hole of the flow distribution disc to be detected, the positioning pin hole corresponds to the positioning mounting hole of the flow distribution disc and is used in cooperation with a pin to position the flow distribution disc in the circumferential direction (the produced flow distribution disc is generally corresponding in number and position to the positioning mounting hole and the through hole), since the positioning structure is prior art in the field of mechanical assembly and detection, manual (manual bolt) or automatic (for example, a micro cylinder is arranged to push a hidden pin) positioning can be adopted, and the function structure is not described in detail in the application;

[0022] The base 1 is fixedly installed with a column 2, and the column 2 is located at one side of the lower distribution seat 9, and the side of the column 2 facing the lower distribution seat 9 is defined as the front side, and the front side of the column 2 is fixedly installed with a vertical groove plate 3;

[0023] The back side of the column 2 is fixedly installed with a rotary air cylinder, the piston rod of the rotary air cylinder penetrates through the column 2 and the vertical groove plate 3 to the upper part of the front side of the vertical groove plate 3, and an eccentric wheel 4 is located at the upper part of the front side of the vertical groove plate 3 and is eccentrically fixed at the end of the piston rod of the rotary air cylinder;

[0024] The middle part of the front side of the vertical groove plate 3 is fixedly installed with a guide cylinder 5, the guide cylinder 5 is slidably installed with a guide rod 6, the upper end of the guide rod 6 is in contact with the bottom end of the eccentric wheel 4, and the top end of the guide rod 6 can be provided with a circular plate to limit the downward movement of the guide rod and to be in contact with the eccentric wheel, and the lower end of the guide rod 6 is fixedly installed with an upper distribution seat 8, the lower surface of the upper distribution seat 8 is matched and attached to the top surface of the to-be-detected distribution disc, and the top surface of the upper distribution seat 8 is connected to the middle part of the front side of the vertical groove plate 3 through at least two restoring springs 7;

[0025] The rotary air cylinder controls the rotation of the eccentric wheel 4 to drive the lower limit stroke state of the guide rod 6 to make the lower surface of the upper distribution seat 8 at the lower end of the guide rod 6 be sealed and attached to the top surface of the to-be-detected distribution disc, and when the rotary air cylinder controls the rotation of the eccentric wheel 4 to drive the non-lower limit stroke state of the guide rod 6, the restoring spring 7 drives the upper distribution seat 8 to rise to be separated from the attachment to the top surface of the to-be-detected distribution disc;

[0026] The lower distribution seat 9 is internally provided with a through-hole gas conveying passage, one end of the through-hole gas conveying passage is in butt joint with the through-hole passage window of the bottom surface of the to-be-detected distribution disc, and the other end of the through-hole gas conveying passage penetrates through the side wall of the lower distribution seat 9 and is installed with a first gas inlet pipe interface 13;

[0027] The upper distribution seat 8 is internally provided with a through-hole gas outlet passage, one end of the through-hole gas outlet passage is in butt joint with the through-hole passage window of the top surface of the to-be-detected distribution disc, the other end of the through-hole gas outlet passage penetrates through the side wall of the upper distribution seat 8 and is installed with a first gas outlet pipe interface 14, and the first gas outlet pipe interface 14 is connected with the first gas pressure gauge 12 through a pipeline;

[0028] The upper part of the column 2 is fixedly installed with a cross-plate 18, the cross-plate 18 is installed with a cylinder valve seat 10 and a high-pressure air valve seat 11, the cylinder valve seat 10 is provided with a first control handle, the high-pressure air valve seat 11 is provided with a second control handle, the cylinder valve seat 10 and the high-pressure air valve seat 11 are connected with a gas source through a pipeline, the cylinder valve seat 10 is connected with the rotary air cylinder through a pipeline and controls the rotary air cylinder through the first control handle, and the high-pressure air valve seat 11 is connected with the first gas inlet pipe interface 13 through a pipeline and controls the gas supply start-stop through the second control handle.

[0029] The above structure is suitable for detecting the through hole channel on the top surface to the bottom surface of the distribution disc. The center hole of the distribution disc is sleeved on the center positioning column of the lower distribution seat 9, the position of the distribution disc is adjusted, and then the positioning pin hole and the positioning mounting hole are matched and positioned by the pin. The positioning makes the through hole channel window of the bottom surface of the distribution disc butt joint with the through hole gas inlet channel, the first control handle is operated, the rotating cylinder drives the eccentric wheel 4 to rotate 180°, the upper distribution seat 8 is pushed to the lower limit stroke state through the guide rod 6, so that the lower surface of the upper distribution seat 8 is sealed and attached to the top surface of the distribution disc, at the same time, the through hole gas outlet channel is butt jointed with the through hole channel window on the top surface of the distribution disc, which is equivalent to simulating the connection state of the through hole channel when the distribution disc is installed in the product. The second control handle is operated, the through hole channel is supplied with gas for a certain time (determined according to the actual detection requirement), then the second control handle is operated to stop the gas supply, and the pressure is maintained for a certain time (i.e. pressure maintaining, the time is determined according to the actual detection requirement). In this process, the first pressure gauge 12 is observed to determine whether the air pressure is stable, if the air pressure slowly decreases, it represents that the air tightness is unqualified. After the detection is completed, the eccentric wheel is directly controlled to rotate by the first control handle, the guide rod 6 is released, and then the guide rod 6 is reset under the action of the restoring spring 7. Thus, the detection of one through hole channel is completed, and the distribution disc is adjusted for the detection of the next through hole channel.

[0030] Since there are also blind hole channels on some distribution discs (two blind holes connected on the bottom of the distribution disc, and the windows are located on the top surface of the distribution disc), the blind hole gas inlet channel and the blind hole gas outlet channel are further arranged in the upper distribution seat 8. One end of the blind hole gas inlet channel and the blind hole gas outlet channel is respectively butt jointed with the two top surface windows of the blind hole channel of the distribution disc to be detected, the other end of the blind hole gas inlet channel and the blind hole gas outlet channel penetrates through the side wall of the upper distribution seat 8 and is respectively provided with the second gas inlet pipe interface 15 and the second gas outlet pipe interface 16. The second gas inlet pipe interface 15 is connected with the high-pressure gas valve seat 11 through a pipeline, and the second gas outlet pipe interface 16 is connected with the second pressure gauge 17 through a pipeline. The detection method of the blind hole channel is consistent with that of the through hole channel, only the position of the gas inlet channel is different. The air tightness detection result is determined by observing the second pressure gauge 17, and therefore the use method is not described again.

[0031] The upper distribution seat 8 is slidably installed on the front lower part of the vertical groove plate 3 through a track. The upper distribution seat 8 slides up and down along the track. The butt joint positioning of the gas channel port of the upper distribution seat 8 and the channel window on the top surface of the distribution disc is more accurate.

[0032] The top end of the upper distribution seat 8 is fixed on the bottom end of the guide rod 6 through a detachable threaded connection structure. The lower distribution seat 9 is fixed on the base 1 through a plurality of detachable bolts. According to different distribution discs, corresponding upper distribution seat 8 and lower distribution seat 9 can be installed for detection.

[0033] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, but not limited to them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A device for detecting the air tightness of a hole of a disc-like flow distribution disc, characterized in that: It includes base (1), stand (2), vertical groove plate (3), rotary cylinder, eccentric wheel (4), guide cylinder (5), guide rod (6), recovery spring (7), upper distribution seat (8), lower distribution seat (9), cylinder valve seat (10), high pressure valve seat (11) and first air pressure gauge (12); The upper surface of the base (1) is fixedly provided with the lower distribution seat (9), the upper surface of the lower distribution seat (9) is matched and attached to the bottom surface of the flow distribution disc to be detected, and the lower distribution seat (9) is provided with a center positioning column and a positioning pin hole corresponding to the flow distribution disc to be detected; The base (1) is fixedly provided with the stand (2) on the one side of the lower distribution seat (9), and the side of the stand (2) facing the lower distribution seat (9) is defined as the front side, and the front side of the stand (2) is fixedly provided with the vertical groove plate (3); The back surface of the stand (2) is fixedly provided with the rotary cylinder, the piston rod of the rotary cylinder penetrates through the stand (2) and the vertical groove plate (3) to the upper part of the front surface of the vertical groove plate (3), and the eccentric wheel (4) is located on the upper part of the front surface of the vertical groove plate (3) and is eccentrically fixed on the end of the piston rod of the rotary cylinder; The middle part of the front surface of the vertical groove plate (3) is fixedly provided with the guide cylinder (5), the guide rod (6) is slidably installed in the guide cylinder (5), the upper end of the guide rod (6) is in contact with the bottom end of the eccentric wheel (4), the lower end of the guide rod (6) is fixedly provided with the upper distribution seat (8), the lower surface of the upper distribution seat (8) is matched and attached to the top surface of the flow distribution disc to be detected, and the top surface of the upper distribution seat (8) is connected to the middle part of the front surface of the vertical groove plate (3) through at least two recovery springs (7); The lower limit stroke state of the rotary cylinder control eccentric wheel (4) rotating and driving the guide rod (6) is that the lower surface of the upper distribution seat (8) at the lower end of the guide rod (6) is sealed and attached to the top surface of the flow distribution disc to be detected, and when the rotary cylinder control eccentric wheel (4) rotates and drives the guide rod (6) in the non-lower limit stroke state, the recovery spring (7) drives the upper distribution seat (8) to rise and separate from the attachment of the top surface of the flow distribution disc to be detected; The lower distribution seat (9) is provided with a through hole gas conveying channel, one end of the through hole gas conveying channel is connected to the through hole channel window of the bottom surface of the flow distribution disc to be detected, and the other end of the through hole gas conveying channel penetrates through the side wall of the lower distribution seat (9) and is provided with a first air inlet pipe interface (13); The upper distribution seat (8) is provided with a through hole gas outlet channel, one end of the through hole gas outlet channel is connected to the through hole channel window of the top surface of the flow distribution disc to be detected, the other end of the through hole gas outlet channel penetrates through the side wall of the upper distribution seat (8) and is provided with a first air outlet pipe interface (14), and the first air outlet pipe interface (14) is connected to the first air pressure gauge (12) through a pipeline; The upper part of the column (2) is fixedly installed with a cross beam plate (18), the cross beam plate (18) is installed with a cylinder valve seat (10) and a high-pressure air valve seat (11), the cylinder valve seat (10) is provided with a first control handle, the high-pressure air valve seat (11) is provided with a second control handle, the cylinder valve seat (10) and the high-pressure air valve seat (11) are connected with a gas source through pipelines, the cylinder valve seat (10) is connected with a rotary cylinder through a pipeline and controls the rotary cylinder through the first control handle, and the high-pressure air valve seat (11) is connected with a first air inlet pipe interface (13) through a pipeline and controls the air supply start-stop through the second control handle.

2. The hole air tightness detection device of a disc-shaped flow distribution disc according to claim 1, characterized in that: The upper distribution seat (8) is further provided with a blind hole gas inlet channel and a blind hole gas outlet channel, one end of the blind hole gas inlet channel and the blind hole gas outlet channel is respectively connected with two top surface windows of the blind hole channel of the to-be-detected distribution disc, the other end of the blind hole gas inlet channel and the blind hole gas outlet channel is respectively connected with a second air inlet pipe interface (15) and a second air outlet pipe interface (16) which are installed on the side wall of the upper distribution seat (8), the second air inlet pipe interface (15) is connected with the high-pressure air valve seat (11) through a pipeline, and the second air outlet pipe interface (16) is connected with a second air pressure gauge (17) through a pipeline.

3. The device for detecting the gas tightness of the hole of the disc-shaped flow distribution disc according to claim 1 or 2, characterized in that: The upper distribution seat (8) is slidably installed on the front lower part of the vertical groove plate (3) through a track.

4. The hole air tightness detection device of a disc-shaped flow distribution disc according to claim 1 or 2, characterized in that: The upper distribution seat (8) is fixedly installed at the bottom end of the guide rod (6) through a detachable threaded connection structure, and the lower distribution seat (9) is fixedly installed on the base (1) through a plurality of detachable bolts.

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