CN110319981B - General detection equipment and method for sealing performance in valve production and manufacturing - Google Patents
General detection equipment and method for sealing performance in valve production and manufacturing Download PDFInfo
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- CN110319981B CN110319981B CN201910752648.7A CN201910752648A CN110319981B CN 110319981 B CN110319981 B CN 110319981B CN 201910752648 A CN201910752648 A CN 201910752648A CN 110319981 B CN110319981 B CN 110319981B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
Abstract
The invention discloses a universal detection device for the sealing performance in valve production and manufacturing, which relates to the technical field of valve production equipment and comprises the following components: the device comprises a circular feeding device, a square box-shaped device shell is arranged on the outer wall of the detection device, a plurality of notches are formed in one side wall of the device shell, the circular feeding device penetrates through each notch, the circular feeding device is arranged on one side wall of the detection device and is arranged vertically, a water tank extends out of the bottom of the detection device, a water tank opening is formed in the top of the water tank, and the water tank opening is located below the circular feeding device; the two sides of the inner wall of each notch are respectively provided with a sinking groove, the sinking grooves are in a circular hole shape, and the sinking grooves are coaxially and symmetrically distributed on the two sides of the inner wall of the notch; according to the invention, the circular feeding device is arranged on the side edge of the detection device and supplies materials to the detection device in real time, so that the detection efficiency is improved.
Description
Technical Field
The invention relates to the technical field of valve production equipment, in particular to universal detection equipment and method for the sealing performance of valve production and manufacturing.
Background
The sealing performance of the valve refers to the capability of each sealing part of the valve for preventing medium leakage, and is the most important technical performance index of the valve. The sealing part of the valve has three parts: the contact part between the opening and closing piece and the two sealing surfaces of the valve seat; the matching part of the packing, the valve rod and the packing box; the valve body is connected with the valve cover. Where the former leak is called an internal leak, known as a leak that is not tight, it will affect the ability of the valve to shut off the media. Internal leakage is not allowed for shut-off valves and the like.
The mesh valve, the valve that uses the most is mainly the straight line valve, and the both ends valve port of valve promptly is same axis and arranges, and this kind of valve detects and need carry out the leakproofness to every valve after mass production makes, and patent number: CN201811153659.5 discloses a valve tightness detection device, which can accurately detect whether there is a leakage problem at the contact position between the sealing surfaces of the opening and closing member and the valve seat. But in the patent nos.: it can be seen in the technical document disclosed in CN201811153659.5 that the detection device can only detect one valve at a time, and the detection efficiency is very low, which is difficult to meet the requirement of tightness detection after mass production. And this check out test set does not have pressure fluid recovery unit, and the pressure fluid does not have better recovery to carry out cyclic utilization after detecting, causes the waste of production resources.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide general detection equipment and method for the sealing performance in valve production and manufacturing, and solve the technical problem of low detection efficiency of valves.
The technical problem to be solved by the invention is realized by adopting the following technical scheme: a general detection device for the sealing performance in valve production and manufacturing comprises: the device comprises a circulating feeding device, a detection device and a water tank, wherein a square box-shaped device shell is arranged on the outer wall of the detection device, a plurality of notches are formed in one side wall of the device shell, the circulating feeding device penetrates through each notch, the circulating feeding device is arranged on one side wall of the detection device and is arranged vertically, the water tank extends out of the bottom of the detection device, a water tank opening is formed in the top of the water tank, and the water tank opening is located below the circulating feeding device;
the two sides of the inner wall of each notch are respectively provided with a sinking groove, the sinking grooves are in a circular hole shape, and the sinking grooves are coaxially and symmetrically distributed on the two sides of the inner wall of the notch;
a first clamping disc is arranged in one sinking groove, the first clamping disc extends into the device shell, a first driving rod is fixedly connected to the outer wall of the first clamping disc, the first driving rod is an L-shaped straight rod, and the other end of the first driving rod is fixed at one end of a two-way electric push rod;
a second clamping disc is arranged in the other sinking groove and extends into the device shell, a second driving rod is fixedly connected to the outer wall of the second clamping disc, the second driving rod is an L-shaped straight rod, and the other end of the second driving rod is fixed to the other end of the two-way electric push rod;
the inside of device shell is equipped with the backup pad, two-way electric putter is fixed in on the backup pad.
As a preferred technical scheme of the present invention, the first clamping disk is designed to be a stepped shaft shape, the end face of the first clamping disk is provided with a clamping groove, the clamping groove is designed to be an annular sinking groove, so as to facilitate sealing of valve ports with different diameters, and improve sealing performance, the axial center position of the clamping groove is provided with a boss, the end portion of the boss is provided with an air nozzle, a pressure air source is filled into the valve through the air nozzle, the air nozzle is designed to be a square hole shape, an air passage is arranged inside the air nozzle, and the air passage is provided with an air inlet port on the side wall of the device housing through a first air inlet pipe, so that an external air source can supply air into the air passage through the air inlet.
According to a preferred technical scheme of the invention, the inner wall of the air nozzle is provided with the sealing plate, so that when a second clamping disc injects liquid into the valve, the inner part of the air nozzle has an automatic sealing function, and the detection performance of the valve sealing performance is improved.
As a preferred technical solution of the present invention, in order to improve the sealing performance between the clamping disc and the valve port, a sealing air cushion is disposed inside the clamping groove, the sealing air cushion is made of a silicon rubber material, the sealing air cushion is hollow and filled with an air bag, and the air bag saturation is 85%, which is beneficial to form a tighter sealing surface between the clamping disc and the valve port of the valve.
As a preferred technical scheme of the invention, in order to improve the detection efficiency during valve production and manufacture, the circulating feeding device comprises a conveying belt, the conveying belt is provided with a closed circular ring shape, the outer wall of the conveying belt is provided with a plurality of supporting claws, the supporting claws are uniformly distributed on the outer wall of the conveying belt, the supporting claws are tile-shaped, two circles of an inner circle of the conveying belt are respectively provided with a roller, two ends of each roller are respectively provided with a rack for fixation, a servo motor is arranged in the middle of one rack, one end of one roller is provided with a chain wheel, and the servo motor is connected with the chain wheel through a chain.
A general detection method for the sealing performance in valve production and manufacturing comprises the following steps:
a. placing a valve, namely placing two ends of a valve port of a sealing valve to be detected on a supporting claw of the circulating feeding device in parallel; conveying the valve ports at two ends of the valve to the notch of the detection device through the circulating feeding device;
b. the bidirectional electric push rod drives the driving rods at the two ends to drive the first clamping disc and the second clamping disc to move towards the middle to clamp the two ends of the valve port, and the bidirectional electric push rod stops; at the moment, the valve ports at the two ends of the valve are hermetically connected with the clamping disc, and a sealing surface is formed at the joint;
c. injecting a pressure source into the valve through the first clamping disk or the second clamping disk; and maintaining the pressure for 8-15 seconds;
d. detecting by observing whether a pressure source leaks from the sealing surface;
e. the detection is carried out by observing whether the pressure source leaks from the outer wall of the valve.
As a preferred technical solution of the present invention, in order to improve the detection accuracy, the pressure source is a gas or a liquid.
Compared with the prior art, the invention at least comprises the following beneficial effects:
firstly, the circular feeding device is arranged on the side edge of the detection device and supplies materials to the detection device in real time, so that the detection efficiency is improved.
The bottom of the detection device is provided with the water tank, and the top of the water tank is provided with the water tank opening, so that the pressure liquid which is detected by the detection device and released by the detection device can be conveniently collected, the pressure liquid can be continuously recycled, and the utilization rate of production resources is improved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic diagram of the position arrangement structure of the universal leak testing equipment for manufacturing the valve according to the present invention;
FIG. 2 is a schematic cross-sectional view of a detecting unit A-A according to the present invention;
FIG. 3 is an enlarged partial view of a first clamping disk of the present invention;
FIG. 4 is a schematic cross-sectional view of a first clamping disk of the present invention;
FIG. 5 is a schematic view of a partially enlarged structure of an air nozzle according to the present invention;
in the figure: 1. the device comprises a circulating feeding device, 101, a conveying belt, 102, a supporting claw, 103, a roller, 104, a rack, 105, a chain wheel, 106, a servo motor, 2, a detection device, 201, a device shell, 202, a supporting plate, 203, a bidirectional electric push rod, 204, a first driving rod, 205, a second driving rod, 206, a first clamping disc, 2060, a clamping groove, 2061, a sealing air cushion, 2062, a boss, 2063, an air nozzle, 2064, a tension spring groove, 2065, a tension spring, 2066, a hanging rod, 2067, a fan-shaped hole, 2068, a sealing plate, 2069, an air passage, 207, a second clamping disc, 208, a sinking groove, 209, a notch, 210, a first air inlet pipe, 212, a water injection pipe, 3 and a water tank.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.
It will be understood that when an element is referred to as being "secured to" another element, it can be on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for illustrative purposes only and do not represent the only embodiments.
Example 1
Please refer to fig. 1 and fig. 2, which are schematic overall structural diagrams of a universal leak testing apparatus for manufacturing a valve; the method comprises the following steps: the device comprises a circulating feeding device 1, a detection device 2 and a water tank 3, wherein a device shell 201 of the detection device 2 is in a square box shape, a plurality of notches 209 are formed in one side wall of the device shell 201, the circulating feeding device 1 penetrates through each notch 209, the circulating feeding device 1 is arranged on one side wall of the detection device 2 and is vertically arranged, and the circulating feeding device 1 provides a sealing valve to be detected for the detection device 2; a water tank 3 extends out of the bottom of the detection device 2, a water tank opening is formed in the top of the water tank 3, the water tank opening is located below the circulating feeding device 1, a water pump is arranged at the top of the water tank 3 and at the bottom of the detection device 2, and the water tank 3 is convenient to collect pressure liquid which is detected by detection equipment and released, so that the pressure liquid can be continuously recycled, and the utilization rate of production resources is improved;
the two sides of the inner wall of each notch 209 are respectively provided with a sinking groove 208, the sinking grooves 208 are in a circular hole shape, and the sinking grooves 208 are coaxially and symmetrically distributed on the two sides of the inner wall of each notch 209, so that the clamping discs at the two ends can clamp the equipment horizontally in the left and right directions, the valve port of the valve can be clamped conveniently, the sealing performance of the valve can be improved, the valve can be clamped and loosened timely, and the next valve can enter the detection port for detection;
a first clamping disc 206 is installed inside one of the sinking grooves 208, the first clamping disc 206 extends into the device shell 201, a first driving rod 204 is fixedly connected to the outer wall of the first clamping disc 206, the first driving rod 204 is an L-shaped straight rod, and the other end of the first driving rod 204 is fixed at one end of the bidirectional electric push rod 203;
a second clamping disc 207 is installed inside the other sinking groove 208, the second clamping disc 207 extends into the device shell 201, a second driving rod 205 is fixedly connected to the outer wall of the second clamping disc 207, the second driving rod 205 is an L-shaped straight rod, and the other end of the second driving rod 205 is fixed to the other end of the bidirectional electric push rod 203;
a supporting plate 202 is arranged in the device shell 201, and a bidirectional electric push rod 203 is fixed on the supporting plate 202. The two-way electric push rod 203 is favorable for controlling the first clamping disk 206 and the second clamping disk 207 to synchronously move, the clamping performance of the valve is improved,
in addition, the servo motor and the power elements such as the water pump, the air pump and the like are controlled by the detection device, and the motion of each power element is coordinated through the existing commercially available control module, so that the detection device can normally operate.
Example 2
Referring to fig. 1-5, there are shown schematic structural diagrams of a universal leak testing apparatus for manufacturing a valve, which is similar to that of embodiment 1, and the differences between the same components are not described in this embodiment:
the first clamping disk 206 is designed to be in a stepped shaft shape, the end face of the first clamping disk 206 is provided with a clamping groove 2060, the clamping groove 2060 is designed to be a circular sinking groove, the axial center of the clamping groove 2060 is provided with a boss 2062, the end part of the boss 2062 is provided with an air nozzle 2063, the air nozzle 2063 is designed to be in a square hole shape, the air nozzle 2063 is internally provided with an air passage 2069, the air passage 2069 is provided with an air inlet interface on the side wall of the device shell 201 through a first air inlet pipe 210, the air inlet interface is connected with an air pump, the air pump is an independent element arranged outside the detection device,
the square-hole shaped air nozzle 2063 has a large cross-sectional area of the pipe and a high air flow circulation rate, and can quickly inject a pressure air source into the valve.
The inside of the clamping groove 2060 is provided with a sealing air cushion 2061, the sealing air cushion 2061 is in a circular sheet shape, the sealing air cushion 2061 is made of silicon rubber, the inside is hollow and filled with an air bag, the saturation of the air bag is 85%, and the 85% of the saturation of the air bag ensures that the sealing washer has soft toughness and plasticity and is easy to attach, so that valve ports of sealing valves with different structures are met, the sealing performance is improved,
wherein, the sealing cushion 2061 is made into a circular ring shape, the sealing cushion 2061 is made of silicon rubber material, when the sealing cushion is jointed with the valve port of the clamping groove 2060, a sealing surface is formed, the sealing cushion 2061 is hollow and filled with 85% of air bags, the air bags are extruded, the outer wall of the sealing surface is further sealed, the sealing performance is improved,
the inside of first clamp plate 206 and the inner wall that is close to in air nozzle 2063 are equipped with sector hole 2067, the inner wall of air nozzle 2063 is equipped with closing plate 2068, closing plate 2068 is formed by two square plate concatenations, the end of two square plates articulates respectively in air nozzle 2063's inner wall both sides, each square plate all is equipped with a peg 2066 in air nozzle 2063's articulated department, peg 2066 stretches into in sector hole 2067, the one end of sector hole 2067 is equipped with extension spring groove 2064, the inslot of extension spring groove 2064 is fixed with extension spring 2065, one of them one end and peg 2066 of extension spring 2065 are connected.
The connecting ends of the two square plates are wrapped with sealant, so that the sealing of the connecting positions of the two square plates is improved;
the sealing plate 2068 is used for sealing a pressure source in the valve port, and when the first clamping disk 206 does not inject a pressure gas source into the valve port and the second clamping disk 207 injects pressure liquid into the valve port, the sealing plate 2068 is arranged for sealing the pressure liquid in the valve port and improving the sealing property in order to improve the sealing property and avoid the leakage of the pressure liquid;
when the first clamping disk 206 does not inject a pressure gas source into the valve port, and the second clamping disk 207 injects a pressure liquid into the valve port, a sealing plate 2068 is arranged in the air nozzle 2063, so that the pressure liquid can be prevented from entering the air passage 2069 along the air nozzle 2063 and blocking the air passage 2069.
The circulating feeding device 1 comprises a conveying belt 101, the conveying belt 101 is provided with a closed circular ring shape, the outer wall of the conveying belt 101 is provided with a plurality of supporting claws 102, the supporting claws 102 are uniformly distributed on the outer wall of the conveying belt 101, the supporting claws 101 are tile-shaped, two circles of the inner ring of the conveying belt 101 are respectively provided with a roller 103, two ends of each roller 103 are respectively provided with a rack 104 for fixation, a servo motor 106 is installed in the middle of one rack 104, one end of one roller 103 is provided with a chain wheel 105, and the servo motor 106 is connected with the chain wheel 105 through a chain.
Wherein, the conveyer belt 101 distributes in a plurality ofly at the outer wall of cylinder 103 equidistance, for detection device once only conveys a plurality of seal valves, improves detection efficiency.
In addition, the second clamping disk 207 and the first clamping disk 206 in this embodiment are configured to have the same structure, and a water injection pipe 212 is connected to the outer wall of the second clamping disk 207, and a water inlet port is disposed on the outer wall of the device housing 201 through the water injection pipe 212, so that the connection with a water pump is facilitated, and the operation simplicity of the connection is improved.
Example 3
A general detection method for the sealing performance in valve production and manufacturing comprises the following steps:
a. placing a valve, namely placing two ends of a valve port of a sealing valve to be detected on a supporting claw 102 of the circulating feeding device 1 in parallel; the valve ports at the two ends of the valve are conveyed into the notch 209 of the detection device through the circulating feeding device 1;
b. the bidirectional electric push rod 203 drives the driving rods at the two ends to drive the first clamping disc 206 and the second clamping disc 207 to move towards the middle to clamp the two ends of the valve port, and the bidirectional electric push rod 203 stops; at the moment, the valve ports at the two ends of the valve are hermetically connected with the clamping disc, and a sealing surface is formed at the joint;
c. injecting a pressure source into the valve through the first clamping disk 206 or the second clamping disk 207; and maintaining the pressure for 8-15 seconds;
d. detecting by observing whether a pressure source leaks from the sealing surface;
e. the detection is carried out by observing whether the pressure source leaks from the outer wall of the valve.
In addition, the pressure source in the first clamping disk used in the present invention is a gas and the pressure source in the second clamping disk used in the present invention is a liquid.
The working principle is as follows: when the valve is used for producing and manufacturing universal sealing detection equipment, firstly, two ends of a valve port of a sealing valve to be detected are placed on the supporting claws 102 of the circulating feeding device 1 in parallel; secondly, the two-way electric push rod 203 drives the driving rods at the two ends to drive the first clamping disc 206 and the second clamping disc 207 to move towards the middle to clamp the two ends of the valve port, and the two-way electric push rod stops; at the moment, valve ports at two ends of the valve are in sealing connection with the clamping discs, sealing surfaces are formed at the connection positions, and then a pressure source is injected into the valve through the first clamping disc or the second clamping disc; and maintaining the pressure for 8-15 seconds; finally, whether a pressure source leaks or not is observed through the sealing surface and the outer wall of the valve, and the universal detection equipment for the sealing performance can be normally used for manufacturing the valve.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A general detection device for the sealing performance in valve production and manufacturing comprises: circulation feedway (1), detection device (2), basin (3), its characterized in that: the outer wall of the detection device (2) is provided with a square box-shaped device shell (201), one side wall of the device shell (201) is provided with a plurality of notches (209), each notch (209) is internally provided with a circulating feeding device (1) which penetrates through the notch (209), the circulating feeding devices (1) are arranged on one side wall of the detection device (2) and are vertically arranged, a water tank (3) extends out of the bottom of the detection device (2), the top of the water tank (3) is provided with a water tank opening, and the water tank opening is positioned below the circulating feeding device (1);
two sides of the inner wall of each notch (209) are respectively provided with a sinking groove (208), the sinking grooves (208) are in a circular hole shape, and the sinking grooves (208) are coaxially and symmetrically distributed on two sides of the inner wall of each notch (209);
a first clamping disc (206) is installed inside one sinking groove (208), the first clamping disc (206) extends into the device shell (201), a first driving rod (204) is fixedly connected to the outer wall of the first clamping disc (206), the first driving rod (204) is an L-shaped straight rod, and the other end of the first driving rod (204) is fixed to one end of a bidirectional electric push rod (203);
a second clamping disc (207) is installed inside the other sinking groove (208), the second clamping disc (207) extends into the device shell (201), a second driving rod (205) is fixedly connected to the outer wall of the second clamping disc (207), the second driving rod (205) is an L-shaped straight rod, and the other end of the second driving rod (205) is fixed to the other end of the bidirectional electric push rod (203);
a supporting plate (202) is arranged in the device shell (201), and the bidirectional electric push rod (203) is fixed on the supporting plate (202);
the device is characterized in that the first clamping disc (206) is in a stepped shaft shape, a clamping groove (2060) is formed in the end face of the first clamping disc (206), the clamping groove (2060) is in a circular sunk groove, a boss (2062) is arranged at the axis position of the clamping groove (2060), an air nozzle (2063) is arranged at the end part of the boss (2062), the air nozzle (2063) is in a square hole shape, an air passage (2069) is arranged inside the air nozzle (2063), and an air inlet interface is formed in the side wall of the device shell (201) through a first air inlet pipe (210) by the air passage (2069); the air inlet interface is connected with an air pump, and the air pump is an independent element arranged outside the detection device;
circulation feedway (1) includes conveyer belt (101), conveyer belt (101) are equipped with the confined ring form, the outer wall of conveyer belt (101) is equipped with holds in the palm claw (102), hold in the palm claw (102) and be equipped with a plurality ofly altogether, hold in the palm claw (102) at the outer wall evenly distributed of conveyer belt (101), hold in the palm claw (101) and establish to tile form, the inner circle two rings of conveyer belt (101) respectively have a cylinder (103), the both ends of cylinder (103) respectively are equipped with a frame (104) and fix, one of them servo motor (106) are installed to the intermediate position of frame (104), and the one end of one of them cylinder (103) is equipped with sprocket (105), servo motor (106) are connected with sprocket (105) through the chain.
2. The universal detection device for the sealing performance in valve production and manufacturing according to claim 1, wherein: the inner wall of air nozzle (2063) is equipped with closing plate (2068), closing plate (2068) are formed by two square plate concatenations, and the end of two square plates articulates respectively the inner wall both sides of air nozzle (2063), the inside of first clamp plate (206) and the inner wall that is close to in air nozzle (2063) are equipped with fan-shaped hole (2067), and each square plate is in the articulated department of air nozzle (2063) all is equipped with a peg (2066), peg (2066) stretch into in fan-shaped hole (2067), the one end of fan-shaped hole (2067) is equipped with draw spring groove (2064), the inslot of draw spring groove (2064) is fixed with extension spring (2065), wherein one end and peg (2066) of extension spring (2065) are connected.
3. The universal detection device for the sealing performance in valve production and manufacturing according to claim 1, wherein: the inside of the clamping groove (2060) is provided with a sealing air cushion (2061), the sealing air cushion (2061) is in a circular ring shape, the sealing air cushion (2061) is made of silicon rubber, the inside is hollow and filled with an air bag, and the saturation of the air bag is 85%.
4. The method for detecting the tightness of the valve by the universal valve tightness detecting device in the valve production and manufacturing process according to claim 1 is characterized by comprising the following steps of:
a. placing a valve, namely placing two ends of a valve port of a sealing valve to be detected on a supporting claw (102) of the circulating feeding device (1) in parallel; the valve ports at the two ends of the valve are conveyed into the notch (209) of the detection device through the circulating feeding device (1);
b. the bidirectional electric push rod (203) drives the driving rods at the two ends to drive the first clamping disc (206) and the second clamping disc (207) to move towards the middle to clamp the two ends of the valve port, and the bidirectional electric push rod (203) stops; at the moment, the valve ports at the two ends of the valve are hermetically connected with the clamping disc, and a sealing surface is formed at the joint;
c. injecting a pressure source into the valve through the first clamping disk (206) or the second clamping disk (207); and maintaining the pressure for 8-15 seconds;
d. detecting by observing whether a pressure source leaks from the sealing surface;
e. the detection is carried out by observing whether the pressure source leaks from the outer wall of the valve.
5. The universal leak testing method for manufacturing valves as claimed in claim 4, wherein the pressure source is a gas or a liquid.
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| CN201910752648.7A CN110319981B (en) | 2019-08-15 | 2019-08-15 | General detection equipment and method for sealing performance in valve production and manufacturing |
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| EP2120006A1 (en) * | 2008-05-13 | 2009-11-18 | Emhart Glass S.A. | Out-of-round container detection system and method |
| CN108844683A (en) * | 2018-08-27 | 2018-11-20 | 江苏诚功阀门科技有限公司 | A kind of high-precision intelligent torque ball valve experimental rig |
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