Flexible composite hose air tightness detection device

Abstract

The utility model relates to a flexible composite hose air tightness detection device, which comprises support frames, a control part and a pressure sensor, one support frame is provided with an air guide pipe, one end of the air guide pipe is communicated with an external air source, the other end of the air guide pipe is communicated with one end of a flexible composite hose, the other support frame is provided with a plugging part, and the other end of the flexible composite hose is plugged by the plugging part. The control part comprises an air closing structure and a conducting structure, when the flexible composite hose is driven to be arranged on the air guide pipe in a sleeving mode, the conducting structure can relieve blocking of the pipe opening by the air closing structure, air enters the flexible composite hose, and the pressure sensor detects the air pressure in the flexible composite hose in the inflated state. According to the air tightness detection device for the flexible composite hose, the control part is arranged to control the pipe opening of the air guide pipe to be ventilated and closed, and only when the flexible composite hose is connected to the air guide pipe, the pipe opening of the air guide pipe can be opened, so that air flow enters the flexible composite hose, and therefore, resource waste can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air tightness testing of flexible composite hoses, in particular to an air tightness testing device for flexible composite hoses. Background Art

[0002] Flexible composite hose is a common industrial product, commonly used in the automotive, chemical, medical, household and other fields. It is responsible for the transportation of various fluids. Depending on the installation location, the working pressure ranges from 0.1MPa to 10MPa. Therefore, the air tightness of the hose is one of the main factors affecting its quality. If there is a problem with the air tightness of the hose, it will cause the entire equipment to malfunction or even cause safety problems. Therefore, the hose needs to be tested for air tightness after production to prevent hose leakage.

[0003] For small hose manufacturers, hoses are usually tested one by one. For factories producing in large quantities, hoses are usually randomly sampled for testing. Regardless of the scale of the factory, the hose testing workload is large. The current conventional testing method is for workers to block one end of the hose and inject air into the other end to see if the hose leaks. This method is inefficient and requires the completion of the hose test before the next hose can be tested. It is not suitable for the air tightness testing of large quantities of hoses. Utility Model Content

[0004] The utility model aims to provide a flexible composite hose air tightness detection device, which is intended to facilitate batch detection of the air tightness of flexible composite hoses.

[0005] To achieve the above-mentioned object, the technical solution adopted by the present invention is as follows: providing a flexible composite hose air tightness detection device, comprising: a support frame, wherein two support frames are provided, one of the support frames is provided with an air guide tube, one end of the air guide tube is connected to an external air source, and the other end of the air guide tube is connected to one end of the flexible composite hose, and the other support frame is provided with a blocking portion, wherein the blocking portion is used to block the other end of the flexible composite hose;

[0006] a control unit, the control unit comprising an air-blocking structure disposed within the air duct, and a conducting structure disposed within the flexible composite hose, the air-blocking structure being configured to block the orifice of the air duct. When the flexible composite hose is driven to fit over the air duct, the conducting structure is capable of releasing the blockage of the orifice by the air-blocking structure, allowing gas to enter the flexible composite hose;

[0007] A pressure sensor is connected to the sealing portion, and is used to detect the air pressure in the flexible composite hose in an inflated state.

[0008] Furthermore, the air-sealing structure includes a contraction port arranged in the air duct, and a leakage net arranged in the air duct and close to the large-diameter end of the contraction port. The contraction port is arranged close to the pipe mouth, and a ball valve is arranged between the contraction port and the leakage net. In the air supply state, the ball valve is driven by the airflow to seal the small-diameter end of the contraction port.

[0009] Furthermore, the conducting structure includes a connector and a thimble arranged in the connector. One side of the connector can be operably connected to the air duct, and the other side of the connector is sleeved in the flexible composite hose. When the connector is connected to the air duct, the thimble can be inserted into the contraction port to release the blockage of the contraction port by the ball valve.

[0010] Furthermore, the end portion of the connecting piece is bent toward the flexible composite hose to form a bent portion, and the bent portion is sleeved on the pipe opening of the flexible composite hose.

[0011] Furthermore, the connecting piece is connected to the air guide tube by threaded connection, and / or the connecting piece is connected to the air guide tube by clamping connection.

[0012] Furthermore, the blocking portion includes a blocking block arranged on the support frame, a groove is provided on the support frame corresponding to the other end of the flexible composite hose, the blocking block is connected to the groove through a spring, and the pressure sensor is arranged at one end of the blocking block facing the inner side of the flexible composite hose.

[0013] Furthermore, the air guide pipe includes a main pipe and a branch pipe, the main pipe is arranged in a ring shape, the main pipe is connected to the external air source, the branch pipe is arranged in multiple, and the multiple branch pipes are arranged in multiple along the circumference of the main pipe, and the air-blocking structure is arranged on the branch pipe.

[0014] Furthermore, it also includes a base and a rotating structure, the two support frames and the rotating structure are both arranged on the base, and the rotating structure is located between the two support frames, and the rotating structure is used to drive the two support frames to rotate in the same direction.

[0015] Furthermore, the rotating structure includes a driving part, a gear and a ring gear. The ring gear is provided in two pieces, and the two ring gears are respectively mounted on the two support frames. The gear is provided in two pieces, and the two gears are respectively engaged with the two ring gears. The two gears are connected through a transmission mechanism, and one of the gears is provided at the power output end of the driving part.

[0016] Furthermore, the transmission mechanism includes a transmission shaft and two sets of pulley groups, the transmission shaft is extended along the axial direction of the two gears, the two sets of pulley groups are respectively arranged at both ends of the transmission shaft, and the other ends of the two sets of pulley groups are respectively connected to the two gears.

[0017] The beneficial effects of the flexible composite hose air tightness detection device provided by the utility model are:

[0018] Compared with the prior art, the utility model provides a flexible composite hose air tightness detection device, which sets an air duct connected to an external air source at one end of the flexible composite hose and sets a sealing portion at the other end of the flexible composite hose. The air tightness of the flexible composite hose can be tested by changing the air pressure in the flexible composite hose. At the same time, a control portion is set to control the ventilation and air sealing of the air duct mouth. Only when the flexible composite hose is connected to the air duct can the mouth of the air duct be opened, thereby allowing air flow to enter the flexible composite hose, which can help reduce waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A schematic diagram of the overall structure of a flexible composite hose air tightness detection device provided by an embodiment of the utility model;

[0021] Figure 2 A schematic diagram of the assembly of the air guide tube and the conducting structure provided in an embodiment of the present utility model;

[0022] Figure 3 A schematic diagram of the connection relationship between the air-blocking structure and the conducting structure provided in an embodiment of the present utility model;

[0023] Figure 4 Schematic diagram of the explosion structure of the blocking portion provided by the embodiment of the utility model;

[0024] Figure 5 A structural schematic diagram of a rotating structure provided by an embodiment of the utility model.

[0025] In the figure: 1. base; 2. support frame; 201. support plate; 2011. groove; 3. air guide pipe; 301. main pipe; 302. branch pipe; 4. air-tight structure; 401. contraction port; 402. leakage net; 403. ball valve; 5. conduction structure; 501. connector; 5011. bending part; 502. ejector pin; 6. sealing part; 601. sealing block; 602. spring; 7. rotating structure; 701. driving part; 702. ring gear; 703. gear; 704. transmission mechanism; 7041. transmission shaft; 7042. pulley assembly. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by this embodiment more clearly understood, this embodiment is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this embodiment and are not intended to limit this embodiment.

[0027] Please also refer to Figures 1 to 5 The air tightness detection device for a flexible composite hose provided in this embodiment is now described. The air tightness detection device for a flexible composite hose provided in this embodiment includes a support frame 2, a control unit, and a pressure sensor.

[0028] Two support frames 2 are provided. One support frame 2 is provided with an air duct 3, one end of which is connected to an external air source and the other end of which is connected to one end of a flexible composite hose. The other support frame 2 is provided with a sealing portion 6, which is used to seal the other end of the flexible composite hose. The control unit includes an air-blocking structure 4 disposed within the air duct 3 and a conducting structure 5 disposed within the flexible composite hose. The air-blocking structure 4 is used to block the opening of the air duct 3. When the flexible composite hose is forced to fit over the air duct 3, the conducting structure 5 releases the seal on the opening of the air duct 3, allowing gas to enter the flexible composite hose. A pressure sensor is connected to the sealing portion 6 and is used to detect the air pressure within the inflated flexible composite hose.

[0029] A flexible composite hose air tightness detection device of the present embodiment is provided with an air duct 3 connected to an external air source at one end of the flexible composite hose, and a sealing portion 6 is provided at the other end of the flexible composite hose. The air tightness of the flexible composite hose can be tested by changing the air pressure in the flexible composite hose. At the same time, a control portion is provided to control the ventilation and sealing of the pipe opening of the air duct 3. Only when the flexible composite hose is connected to the air duct 3 can the pipe opening of the air duct 3 be opened, thereby allowing air flow to enter the flexible composite hose, which can help reduce waste of resources.

[0030] Based on the overall introduction of the above structure, an exemplary structure of a flexible composite hose air tightness detection device of this embodiment is as follows: Figure 1As shown, the base 1 is a rectangular structure with a hollow interior, and two support frames 2 are respectively arranged on the left and right sides of the top of the base 1. Figure 1 and Figure 5 , the support frame 2 on the left is provided with an external gas source and an air guide tube 3 connected to the external gas source, and the support frame 2 on the right is provided with a sealing portion 6.

[0031] As a preferred embodiment, the airway 3 includes a main pipe 301 and a branch pipe 302. Figure 2 As shown in FIG, the main pipe 301 is arranged in an annular shape and communicates with an external air source. Multiple branch pipes 302 are provided, and multiple branch pipes 302 are arranged along the circumference of the main pipe 301. The air-sealing structure 4 is provided on the branch pipes 302. This arrangement facilitates simultaneous airtightness testing of multiple flexible composite hoses, thereby improving the efficiency of testing batches of flexible composite hoses.

[0032] In this embodiment, each branch pipe 302 is provided with an air-blocking structure 4. As a preferred embodiment, the air-blocking structure 4 includes a constriction 401 disposed within the air duct 3, and a leakage screen 402 disposed on the air duct 3 near the large-diameter end of the constriction 401. The constriction 401 is disposed near the pipe orifice, and a ball valve 403 is disposed between the constriction 401 and the leakage screen 402. In the air supply state, the ball valve 403 is driven by the airflow to seal against the small-diameter end of the constriction 401.

[0033] Specifically, one of the branch pipes 302 and the corresponding airtight structure 4 is used as an example for description. Figure 3 As shown in the figure, a constriction opening 401 is provided within the branch pipe 302, near the opening for connecting the flexible composite hose, and constricts toward the central axis of the branch pipe 302. A mesh 402 is provided at the large-diameter end of the constriction opening 401, where it begins to constrict, to facilitate gas circulation. A ball valve 403 is provided between the mesh 402 and the constriction opening 401. The diameter of the ball valve 403 is slightly larger than the small-diameter end of the constriction opening 401. When air from an external air source enters the air guide pipe 3, the air pressure within the pipe squeezes the ball valve 403 against the small-diameter end of the constriction opening 401. Due to its larger diameter, the ball valve 403 can completely block the constriction opening 401, preventing smooth airflow and thus reducing resource waste.

[0034] When preparing to conduct an air tightness test on the flexible composite hose, it is necessary to set a conducting structure 5 in the flexible composite hose to be tested to facilitate communication with the air-sealing structure 4. As a preferred embodiment, the conducting structure 5 includes a connector 501 and a ejector pin 502 disposed in the connector 501. One side of the connector 501 can be operably connected to the air duct 3, and the other side of the connector 501 is sleeved in the flexible composite hose. When the connector 501 is connected to the air duct 3, the ejector pin 502 can be inserted into the contraction port 401 to release the blockage of the contraction port 401 by the ball valve 403. The connector 501 and the flexible composite hose can be set to an interference fit to prevent the connector 501 from falling out of the flexible composite hose.

[0035] Reference Figure 3 As shown in the figure, the connector 501 is a hollow cylindrical structure, and a bracket is provided inside the connector 501. A pin 502 is provided in the middle of the bracket along the side facing the airway tube 3. When the connector 501 is connected to the airway tube 3, as an option, the connector 501 and the airway tube 3 can be screwed together. Specifically, the pipe opening of the branch pipe 302 is provided with a thread, and the portion of the connector 501 that is sleeved on the branch pipe 302 is correspondingly provided with a thread groove. Through the threaded fit between the two, when the connector 501 is fully connected to the branch pipe 302, the head of the pin 502 in the connector 501 is inserted into the contraction port 401, pushing the ball valve 403 away from the contraction port 401. In this way, the airflow in the airway tube 3 can enter the flexible composite hose.

[0036] Alternatively, the connector 501 and the branch pipe 302 can be connected by a snap-fit ​​connection. By providing a snap-fit ​​portion on the connector 501 and a snap-fit ​​portion on the branch pipe 302, the snap-fit ​​portion and the snap-fit ​​portion cooperate to achieve the connection between the connector 501 and the branch pipe 302. The specific structures of the snap-fit ​​portion and the snap-fit ​​portion are not limited herein and can be configured according to actual circumstances.

[0037] In addition, in this embodiment, in order to further ensure that the connector 501 can maintain a fixed position in the ventilation state, as a preferred embodiment, the end of the connector 501 is bent toward the flexible composite hose to form a bent portion 5011, and the bent portion 5011 is sleeved on the pipe mouth of the flexible composite hose. Figure 3 As shown in FIG, the end portion of connector 501 is bent outward, thereby partially enclosing the sidewall of the flexible composite hose from the end portion. When ejector pin 502 within connector 501 is impacted by airflow, the bent portion 5011 of connector 501 is held against the flexible composite hose, preventing connector 501 from moving as a whole. This ensures that connector 501 remains securely positioned within the flexible composite hose.

[0038] In this embodiment, as a preferred embodiment, the support frame 2 provided with the blocking portion 6 has a support plate 201, and the support plate 201 is provided with a blocking portion 6 corresponding to each branch pipe 302. Figure 4 As shown in FIG, the sealing portion 6 includes a sealing block 601 mounted on the support frame 2. A groove 2011 is provided on the support frame 2 corresponding to the other end of the flexible composite hose. The sealing block 601 is connected to the groove 2011 via a spring 602. A pressure sensor is provided on the end of the sealing block 601 facing the inside of the flexible composite hose. When one end of the flexible composite hose is connected to the airway tube 3, the other end of the flexible composite hose is inserted into the groove 2011 provided on the support plate 201. The sealing block 601 located in the groove 2011, under the action of the spring 602, blocks the nozzle of the flexible composite hose, preventing gas from leaking out of the flexible composite hose and affecting the air pressure within the flexible composite hose.

[0039] Among them, the above-mentioned pressure sensor is arranged on the sealing block 601 (not shown in the figure) and is connected to the external control component point so as to be able to sense the air pressure value in the flexible composite hose. If the average air pressure value in the flexible composite hose cannot reach the preset value, it means that the air tightness of the flexible composite hose is not good and the flexible composite hose is damaged. The signal can be transmitted to the alarm (not shown in the figure) through the control component to alarm to prompt the staff.

[0040] In addition, in this embodiment, in order to facilitate the installation of flexible composite hoses corresponding to the plurality of branch pipes 302, so as to realize the detection of batch flexible composite hoses, a rotating structure 7 is preferably provided in this embodiment. Figure 5 As shown in FIG, the two support frames 2 and the rotating structure 7 are both arranged on the base 1, and the rotating structure 7 is located between the two support frames 2. The rotating structure 7 is used to drive the two support frames 2 to rotate in the same direction.

[0041] As a specific preferred embodiment, the rotating structure 7 includes a driving part 701, a gear 703 and a ring gear 702. There are two ring gears 702, and the two ring gears 702 are respectively mounted on two support frames 2. There are two gears 703, and the two gears 703 are respectively engaged with the two ring gears 702. The two gears 703 are connected to each other through a transmission mechanism 704, and one gear 703 is set at the power output end of the driving part 701.

[0042] Specific reference Figure 5As shown in FIG, one ring gear 702 is sleeved on the outside of the main pipe 301, and another ring gear 702 is sleeved on the outside of the support plate 201. Two gears 703 are respectively disposed on the undersides of the two ring gears 702 and mesh with the two ring gears 702. The left gear 703 is connected to the power output end of the drive unit 701. The two gears 703 are connected via a transmission mechanism 704 to maintain synchronous rotation between the two gears 703. Preferably, the drive unit 701 is configured as a drive motor, which has a simple structure and is easy to set up.

[0043] As a preferred embodiment, the transmission mechanism 704 includes a transmission shaft 7041 and two sets of pulley groups 7042. The transmission shaft 7041 is extended along the axial direction of the two gears 703. The two sets of pulley groups 7042 are respectively arranged at both ends of the transmission shaft 7041, and the other ends of the two sets of pulley groups 7042 are respectively connected to the two gears 703.

[0044] Specifically, a storage space for accommodating the rotating structure 7 is provided in the base 1, and the transmission shaft 7041 is rotatably arranged in the storage space. The two ends of the transmission shaft 7041 are respectively close to the two gears 703, and a pulley group 7042 is provided between the two ends of the transmission shaft 7041 and the two gears 703 to realize power transmission between the transmission shaft 7041 and the two gears 703. Its structure is simple and easy to design and arrange.

[0045] In this embodiment, a flexible composite hose air tightness testing device is used. When an external air source is turned on, both the main pipe 301 and the branch pipe 302 of the air guide pipe 3 are filled with air. The air pressure in the branch pipe 302 causes the ball valve 403 to seal the constriction opening 401. Simultaneously, a connector 501 is fitted over one end of the flexible composite hose to be tested. The end of the flexible composite hose with the connector 501 is then connected to the branch pipe 302. When the flexible composite hose is rotated, a pin 502 within the connector 501 releases the ball valve 403 from blocking the constriction opening 401.

[0046] Then place the other end of the flexible composite hose into the support plate 201. The blocking block 601 in the support plate 201 is on the left and right sides of the spring 602 to block the other end of the flexible composite hose. At this time, a closed space is formed in the flexible composite hose, and gas enters the flexible composite hose, causing the air pressure in the flexible composite hose to gradually increase. The pressure sensor detects the air pressure in real time. If the air pressure cannot reach the preset value, it means that the air tightness of the flexible composite hose is not good, which can give a prompt to the staff.

[0047] While the flexible composite hose is being filled with gas, in order to save time, the drive motor is started, and the drive motor drives the two gear rings 702 to rotate through the gear 703 and the transmission mechanism 704. In this way, it is convenient for the staff to place other flexible composite hoses to be tested into the device for testing, so as to improve the efficiency of air tightness testing of batches of flexible composite hoses.

[0048] The above description is only a preferred embodiment of this embodiment and is not intended to limit this embodiment. Any modifications, equivalent replacements and improvements made within the spirit and principles of this embodiment should be included in the scope of protection of this embodiment.

Claims

1. A flexible composite hose air tightness detection device, characterized in that: include: A support frame (2), wherein two support frames (2) are provided, one of the support frames (2) is provided with an air guide tube (3), one end of the air guide tube (3) is connected to an external air source, and the other end of the air guide tube (3) is connected to one end of a flexible composite hose, and the other support frame (2) is provided with a blocking portion (6), and the blocking portion (6) is used to block the other end of the flexible composite hose; a control unit, the control unit comprising an air-blocking structure (4) disposed in the air duct (3), and a conducting structure (5) disposed in the flexible composite hose, the air-blocking structure (4) being used to block the tube opening of the air duct (3); when the flexible composite hose is driven to be sleeved on the air duct (3), the conducting structure (5) can release the blocking of the tube opening by the air-blocking structure (4), allowing gas to enter the flexible composite hose; A pressure sensor is connected to the sealing portion (6), and the pressure sensor is used to detect the air pressure in the flexible composite hose in an inflated state.

2. The flexible composite hose air tightness detection device according to claim 1, characterized in that: The air-blocking structure (4) comprises a contraction port (401) provided in the air guide tube (3), and a leakage net (402) provided in the air guide tube (3) and close to the large-diameter end of the contraction port (401). The contraction port (401) is provided close to the tube orifice. A ball valve (403) is provided between the contraction port (401) and the leakage net (402). In the air supply state, the ball valve (403) is driven by the air flow to seal the small-diameter end of the contraction port (401).

3. The flexible composite hose air tightness detection device according to claim 2, characterized in that: The conducting structure (5) comprises a connecting piece (501) and a thimble (502) arranged in the connecting piece (501); one side of the connecting piece (501) can be operably connected to the air guide tube (3); the other side of the connecting piece (501) is sleeved in the flexible composite hose; when the connecting piece (501) is connected to the air guide tube (3), the thimble (502) can be inserted into the contraction port (401) to release the blockage of the contraction port (401) by the ball valve (403).

4. The flexible composite hose air tightness detection device according to claim 3, characterized in that: The end of the connecting piece (501) is bent toward the flexible composite hose to form a bent portion (5011), and the bent portion (5011) is sleeved on the pipe mouth of the flexible composite hose.

5. The flexible composite hose air tightness detection device according to claim 3, characterized in that: The connecting piece (501) is connected to the air guide tube (3) by threaded connection, and / or the connecting piece (501) is connected to the air guide tube (3) by snap connection.

6. The flexible composite hose air tightness detection device according to claim 1, characterized in that: The blocking portion (6) comprises a blocking block (601) arranged on the support frame (2); a groove (2011) is provided on the support frame (2) corresponding to the other end of the flexible composite hose; the blocking block (601) is connected to the groove (2011) via a spring (602); and the pressure sensor is arranged at one end of the blocking block (601) facing the inner side of the flexible composite hose.

7. A flexible composite hose air tightness detection device according to any one of claims 1 to 6, characterized in that: The air guide pipe (3) comprises a main pipe (301) and a branch pipe (302), the main pipe (301) being arranged in an annular shape and being in communication with the external air source, the branch pipe (302) being arranged in a plurality, the plurality of branch pipes (302) being arranged in a plurality along the circumference of the main pipe (301), and the air-sealing structure (4) being arranged on the branch pipe (302).

8. The flexible composite hose air tightness detection device according to claim 7, characterized in that: It also includes a base (1) and a rotating structure (7), wherein the two support frames (2) and the rotating structure (7) are both arranged on the base (1), and the rotating structure (7) is located between the two support frames (2), and the rotating structure (7) is used to drive the two support frames (2) to rotate in the same direction.

9. The flexible composite hose air tightness detection device according to claim 8, characterized in that: The rotating structure (7) comprises a driving part (701), a gear (703) and a ring gear (702), wherein the ring gear (702) is provided in two numbers, and the two ring gears (702) are respectively sleeved on the two support frames (2), and the gear (703) is provided in two numbers, and the two gears (703) are respectively meshed and connected with the two ring gears (702), and the two gears (703) are connected by transmission through a transmission mechanism (704), and one of the gears (703) is provided at the power output end of the driving part (701).

10. The flexible composite hose air tightness detection device according to claim 9, characterized in that: The transmission mechanism (704) comprises a transmission shaft (7041) and two groups of pulley assemblies (7042), wherein the transmission shaft (7041) is arranged to extend axially along the two gears (703), and the two groups of pulley assemblies (7042) are respectively arranged at two ends of the transmission shaft (7041), and the other ends of the two groups of pulley assemblies (7042) are respectively connected to the two gears (703).

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