Plastic pipe fitting air tightness detection equipment

Abstract

The invention discloses plastic pipe fitting air tightness detection equipment, and belongs to the technical field of plastic pipe fitting air tightness detection.The plastic pipe fitting air tightness detection equipment comprises a base, a pressurizing assembly is embedded in the upper end of the base, a pressure detector is arranged on the right side of the base, and two stand columns symmetrically distributed about the pressurizing assembly are fixedly connected to the upper end of the base; a connecting plate is slidably installed between the inner walls of the two stand columns, two symmetrically-distributed air cylinders are installed at the upper end of the connecting plate in an embedded mode, the telescopic ends of the bottoms of the air cylinders are fixedly connected with connecting blocks, and air pressure flow direction detection assemblies are installed at the lower ends of the connecting blocks. Then, the pressure detector can detect the pressure value in the pipe fitting in real time, the accuracy of airtightness value detection is guaranteed, meanwhile, under the condition that the inner wall and the outer wall of the pipe body are pressed, whether the pipe fitting has cracks or not can be detected, and therefore the yield of the pipe fitting is synchronously detected.

Description

Technical Field

[0001] The invention relates to the technical field of air tightness detection of plastic pipe fittings, and more specifically, to an air tightness detection device for plastic pipe fittings. Background Art

[0002] Plastic products are a general term for daily and industrial products made of plastic as the main raw material. They include products made of plastic using injection molding, blister molding and other processes. Plastic pipes are one of the most common plastic products in daily life.

[0003] Plastic pipes are generally made of synthetic resin, that is, polyester, with stabilizers, lubricants, plasticizers, etc., and are extruded in a pipe making machine by the "plastic" method. They are mainly used for water supply system piping, drainage, exhaust and sewage sanitary pipes, underground drainage pipe systems, rainwater pipes, and threading pipes for wire installation in housing buildings.

[0004] To ensure the normal use of plastic pipes, air tightness testing is required after the plastic pipes are processed. In the prior art, the commonly used method for testing the air tightness of plastic pipes is: seal both ends of the plastic pipe, then put the plastic pipe into water, then heat the plastic pipe, and then observe whether bubbles are generated. If bubbles are generated, it means that the air tightness of the plastic pipe is defective. Otherwise, if no bubbles are generated, it means that the air tightness of the plastic pipe is good.

[0005] The above detection method has the following problems: first, the plastic tube needs to be heated during the detection process. Heating the plastic tube in water is not only troublesome, but also easily causes damage to the plastic tube. Secondly, if the airtightness defect of the plastic tube is small, the bubbles generated will be less obvious and very laborious to observe. In addition, during the detection process, when the plastic tube is placed in the water and heated, bubbles are easily generated in the water, which can easily cause misjudgment and affect the accuracy of the detection. Therefore, we propose a plastic pipe airtightness detection device. Summary of the invention

[0006] 1. Technical problems to be solved: In view of the problems existing in the prior art, the purpose of the present invention is to provide an air tightness testing device for plastic pipe fittings, which can pressurize the inner and outer walls of the pipe fittings. Subsequently, a pressure detector can detect the pressure value inside the pipe fittings in real time to ensure the accuracy of the air tightness value detection. At the same time, when pressure is applied to the inner and outer walls of the pipe body, it can also detect whether the pipe fittings have cracks, thereby simultaneously detecting the quality of the pipe fittings.

[0007] 2. Technical solution: To solve the above problems, the present invention adopts the following technical solutions.

[0008] A plastic pipe air tightness detection device comprises a base, a pressurizing component is embedded and installed on the upper end of the base, a pressure detector is provided on the right side of the base, two columns symmetrically distributed about the pressurizing component are fixedly connected to the upper end of the base, a connecting plate is slidably installed between the inner walls of the two columns, two symmetrically distributed cylinders are embedded and installed on the upper end of the connecting plate, a connecting block is fixedly connected to the telescopic end of the bottom of the cylinder, and an air pressure flow direction detection component is installed on the lower end of the connecting block.

[0009] A further improvement is that the charging assembly includes an air storage box embedded in the upper end of the base, a sealing ring is sleeved on the upper end of the air storage box, three rows and five columns of air vents are opened on the upper end of the air storage box, a one-way valve is installed between the inner walls of the air vents, a positioning ring is fixedly connected to the outer side of the one-way valve, three rows and four columns of air vents are opened on the upper end of the air storage box, the air vents are located between the inner walls of the two air vents, and a one-way valve is installed between the inner walls of the two air vents.

[0010] A further improvement is that four rectangular slide grooves are opened at the upper end of the gas storage box, movable pillars are slidably connected between the inner walls of the slide grooves, a spring is fixedly connected between the movable pillars and the bottom of the slide grooves, and a pressure-sensitive switch is installed at the inner bottom end of the slide grooves.

[0011] A further improvement is that a single signal controls the driving of the plurality of one-way valves 1 and 2 and the pressure detector.

[0012] A further improvement is that the air pressure flow direction detection component includes a connecting box fixedly connected to the lower end of the connecting block, the bottom of the connecting box is fixedly connected with two positioning rings in three rows and five columns and four electric push rods distributed in a rectangular shape, a telescopic cover plate is installed at the edge end of the bottom of the connecting box, and a connecting rod is fixedly connected between the telescopic end of the electric push rod and the inner wall of the bottom of the telescopic cover plate.

[0013] A further improvement is that a gas flow detector is embedded in the interior of the connection box, the detection surface of the gas flow detector is located at the inner top of the connection box, and a data transceiver is installed on the upper end of the connection box, and the data transceiver is electrically connected to the gas flow detector.

[0014] A further improvement is that a printer is installed on the upper end of the pressure detector.

[0015] 3. Beneficial effects: Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: The present invention is reasonably designed. The required plastic pipe fittings can be placed above the corresponding pressure-charging components, and then the connecting plate is driven to move downward as a whole, and the air pressure flow detection component is urged to press against and cover the surface of the plastic pipe fitting to be detected. Then, personnel first punch the inner wall of the plastic pipe fitting. Since the upper and lower sides of the plastic pipe fitting are sealed, the pressure detector can detect the pressure value inside the pipe fitting in real time to ensure the accuracy of the air tightness value detection. Subsequently, personnel fill gas between the pipe fitting and the air pressure flow detection component, apply pressure to the outer wall of the pipe body, and detect whether the outer wall has cracks. Thus, by applying pressure to the inner and outer sides of the pipe fitting, the accuracy of the value of the pipe fitting after detection can be greatly guaranteed. When the present invention pressurizes the inner and outer sides of the pipe to test the air tightness, if there are small cracks on the surface or inner wall of the pipe without leakage, the cracks can be enlarged under pressure operation to avoid subsequent leakage of the pipe due to damage. This can also achieve further air tightness testing on the quality of the pipe and ensure the safety of the subsequent use of the pipe.

[0016] It should be noted that the structures not introduced in the present invention are the same as the prior art or can be implemented by using the prior art, and are not described in detail here because they do not involve the design points and improvement directions of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the pressurizing assembly of the present invention; Figure 3 It is a structural schematic diagram of the air pressure flow direction detection component of the present invention; Figure 4 It is a structural schematic diagram of the plastic pipe fitting during detection of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the plastic pipe fitting during inspection of the present invention.

[0018] Description of the numbers in the figure: 1. Base; 2. Pressurizing assembly; 21. Air storage box; 22. Sealing ring; 23. One-way valve 1; 24. Positioning collar 1; 25. One-way valve 2; 26. Movable support; 3. Pressure detector; 31. Printer; 4. Column; 5. Connecting plate; 6. Cylinder; 7. Connecting block; 8. Air pressure flow direction detection assembly; 81. Connecting box; 82. Positioning collar 2; 83. Electric push rod; 84. Telescopic cover plate; 85. Connecting rod; 86. Gas flow direction detector; 87. Data transceiver. DETAILED DESCRIPTION

[0019] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0022] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", "provided on" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0023] See also Figure 1-Figure 5 A plastic pipe air tightness detection device comprises a base 1, a pressurizing component 2 is embedded and installed on the upper end of the base 1, a pressure detector 3 is provided on the right side of the base 1, two columns 4 symmetrically distributed about the pressurizing component 2 are fixedly connected to the upper end of the base 1, a connecting plate 5 is slidably installed between the inner walls of the two columns 4, two symmetrically distributed cylinders 6 are embedded and installed on the upper end of the connecting plate 5, a connecting block 7 is fixedly connected to the telescopic end at the bottom of the cylinder 6, and an air pressure flow direction detection component 8 is installed at the lower end of the connecting block 7.

[0024] During the use of this scheme, in order to avoid the situation in which the bubble-type detection method in the prior art easily causes misjudgment or is difficult to detect the smaller airtight defects, in this embodiment, the required plastic pipe fitting can be placed above the corresponding pressure-charging component 2, and then the connecting plate 5 can be driven to move downward as a whole, and the air pressure flow detection component 8 can be pressed and covered on the surface of the plastic pipe fitting to be detected. Then, the personnel first punch the inner wall of the plastic pipe fitting. Since the upper and lower sides of the plastic pipe fitting are sealed, the pressure detector 3 can detect the pressure value inside the pipe fitting in real time to ensure the accuracy of the airtightness value detection. Subsequently, the personnel fill gas between the pipe fitting and the air pressure flow detection component 8, apply pressure to the outer wall of the pipe body, and detect whether the outer wall has cracks. Thus, by applying pressure to the inner and outer sides of the pipe fitting, the accuracy of the value of the pipe fitting after detection can be greatly guaranteed; In this embodiment, since the air tightness test is performed on both sides of the pipe fitting by pressurizing, if there are small cracks on the surface or inner wall of the pipe fitting and no leakage occurs, the cracks can be enlarged under pressure operation to avoid leakage due to subsequent damage to the pipe fitting. This can also further realize air tightness testing on the quality of the pipe fitting and ensure the safety of subsequent use of the pipe fitting.

[0025] See also Figure 1-Figure 2 The charging assembly 2 includes an air storage box 21 embedded in the upper end of the base 1, a sealing ring 22 is sleeved on the upper end of the air storage box 21, three rows and five columns of air vents are opened on the upper end of the air storage box 21, a one-way valve 23 is installed between the inner walls of the air vents, a positioning ring 24 is fixedly connected to the outer side of the one-way valve 23, three rows and four columns of air vents are opened on the upper end of the air storage box 21, the air vents are located between the inner walls of the two air vents, and a one-way valve 25 is installed between the inner walls of the two air vents.

[0026] More specifically, four rectangularly distributed slide grooves are provided at the upper end of the gas storage box 21, movable struts 26 are slidably connected between the inner walls of the slide grooves, a spring is fixedly connected between the movable struts 26 and the bottom of the slide grooves, and a pressure-sensitive switch is installed at the inner bottom end of the slide grooves.

[0027] More specifically, the one-way valve 1 23 , the one-way valve 2 25 and the pressure detector 3 are driven by a single signal control.

[0028] More specifically, the air pressure flow direction detection component 8 includes a connecting box 81 fixedly connected to the lower end of the connecting block 7, and the bottom of the connecting box 81 is fixedly connected with three rows and five columns of positioning rings 82 and four electric push rods 83 distributed in a rectangular shape, and a telescopic cover plate 84 is installed at the edge end of the bottom of the connecting box 81, and a connecting rod 85 is fixedly connected between the telescopic end of the electric push rod 83 and the inner wall of the bottom of the telescopic cover plate 84.

[0029] During the use of this solution, when the pipe is inserted to the outside of the corresponding positioning collar 1 24, the personnel drives the connecting plate 5 to move downward, and causes the telescopic end of the cylinder 6 to drive the connecting box 81 to move downward synchronously, until the positioning collar 2 82 is embedded on the top of the pipe, thereby sealing the upper and lower sides of the pipe. Then the personnel drives the electric push rod 83 to move downward, and the outer telescopic cover plate 84 is synchronously extended until the connecting rod 85 is located on the upper surface of the charging component 2, and the movable support 26 is pressed against the inside of the slide groove, and the pressure-sensitive switch is triggered. At this time, the bottom of the telescopic cover plate 84 is synchronously located above the charging component 2, and the pipe to be tested is covered; Then, when the pressure-sensitive switch receives the information and is triggered, the pressure detector 3 first controls the one-way valve 23 to flip, thereby realizing the pressurization operation inside the pipe fitting, and detects whether the pressure value fluctuates within a certain period of time, thereby judging whether there is leakage on the inner wall side of the pipe fitting; After the air tightness test of the inner wall of the pipe is completed, the personnel drives the one-way valve 25 to flip, thereby releasing the gas between the telescopic cover plate 84 and the outer wall of the pipe. At this time, there is no pressurized gas between the inner wall of the pipe, thereby completing the air tightness test of the inner and outer walls of the pipe; In this embodiment, since the plurality of one-way valves 1 23 and two-way valves 25 are all under the single control of the pressure detector 3 program, personnel can freely place any number of pipes for testing, and the operation steps are more convenient and applicable to a wider range. When testing a small number of pipes, the gas will not leak freely. Furthermore, in this embodiment, pressure can be applied to the inner and outer walls of the pipe fitting, so that the air tightness of the inner and outer walls of the pipe fitting can be tested while the yield rate of the pipe fitting can be tested.

[0030] See also Figure 1-Figure 3 A gas flow direction detector 86 is embedded in the interior of the connection box 81, and the detection surface of the gas flow direction detector 86 is located at the inner top of the connection box 81. A data transceiver 87 is installed on the upper end of the connection box 81, and the data transceiver 87 is electrically connected to the gas flow direction detector 86.

[0031] During use of this solution, after the inner and outer walls of the pipe are respectively filled with air pressure, this embodiment can simultaneously monitor the flow direction of the filled gas under real-time detection by the gas flow direction detector 86, and then determine whether the pipe has tiny gaps based on the distribution range of the gas, thereby further testing the air tightness of the pipe.

[0032] See also Figure 1 and Figure 4-Figure 5 A printer 31 is installed on the upper end of the pressure detector 3.

[0033] During use of this solution, the data values ​​of the overall detection of the pipe fittings by the pressure detector 3 are all converted into paper documents through the printer 31 so that personnel can check them in time.

[0034] The above-described embodiments only express a certain implementation mode of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A plastic pipe air tightness detection device, comprising a base (1), characterized in that: A charging assembly (2) is embedded and installed at the upper end of the base (1), a pressure detector (3) is provided on the right side of the base (1), two columns (4) symmetrically distributed about the charging assembly (2) are fixedly connected to the upper end of the base (1), a connecting plate (5) is slidably installed between the inner walls of the two columns (4), two symmetrically distributed cylinders (6) are embedded and installed at the upper end of the connecting plate (5), a connecting block (7) is fixedly connected to the telescopic end of the bottom of the cylinder (6), and a gas pressure flow direction detection assembly (8) is installed at the lower end of the connecting block (7).

2. The air tightness detection device for plastic pipe fittings according to claim 1, characterized in that: The charging assembly (2) comprises an air storage box (21) embedded and installed at the upper end of the base (1), the upper end of the air storage box (21) is sleeved with a sealing ring (22), the upper end of the air storage box (21) is provided with three rows and five columns of air vents one, each of which is provided with a one-way valve one (23) installed between the inner walls of the air vents, the outer side of the one-way valve one (23) is fixedly connected with a positioning ring one (24), the upper end of the air storage box (21) is provided with three rows and four columns of air vents two, the air vents two are located between the inner walls of the two air vents one, and a one-way valve two (25) is installed between the inner walls of the two air vents.

3. The air tightness detection device for plastic pipe fittings according to claim 2, characterized in that: The upper end of the gas storage box (21) is provided with four rectangularly distributed slide grooves, the inner walls of the slide grooves are slidably connected with movable struts (26), a spring is fixedly connected between the movable struts (26) and the bottom of the slide grooves, and a pressure-sensitive switch is installed at the inner bottom end of the slide grooves.

4. The air tightness testing device for plastic pipes according to claim 2, characterized in that: The one-way valves (23), the two-way valves (25) and the pressure detector (3) are driven by a single signal control.

5. The air tightness detection device for plastic pipe fittings according to claim 1, characterized in that: The air pressure flow direction detection assembly (8) comprises a connection box (81) fixedly connected to the lower end of the connection block (7); three rows and five columns of positioning collars (82) and four electric push rods (83) distributed in a rectangular shape are fixedly connected to the bottom of the connection box (81); a telescopic cover plate (84) is installed at the edge end of the bottom of the connection box (81); and a connection rod (85) is fixedly connected between the telescopic end of the electric push rod (83) and the inner wall of the bottom of the telescopic cover plate (84).

6. The air tightness testing device for plastic pipe fittings according to claim 5, characterized in that: A gas flow direction detector (86) is embedded and installed inside the connection box (81); a detection surface of the gas flow direction detector (86) is located at the inner top end of the connection box (81); a data transceiver (87) is installed at the upper end of the connection box (81); the data transceiver (87) is electrically connected to the gas flow direction detector (86).

7. The air tightness testing device for plastic pipes according to claim 1, characterized in that: A printer (31) is installed on the upper end of the pressure detector (3).

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