Electric water heater accessory performance detection device

Abstract

The invention relates to the technical field of electric water heater application, in particular to an electric water heater accessory performance detection device which comprises an outer frame, the front end of the outer frame is fixedly connected with a front frame, the front frame is provided with a plurality of front-back penetrating mounting holes, and the mounting holes are used for placing pipe bodies of heating pipes. A plurality of heating pipes are arranged in the front frame, a plugging mechanism for sealing two mounting ports of the plurality of heating pipes is arranged in the front frame, and a coating mechanism for respectively sealing and coating pipe bodies of the plurality of heating pipes is arranged between the front frame and the rear side wall of the outer frame. According to the utility model, airtightness quality detection can be carried out on a plurality of heating pipes at a time, an external pressurization mode is adopted for detection, the use conditions of the heating pipes are better met, the application conditions of the heating pipes are truly fed back, multiple groups of heating pipes are synchronously detected, comparison can be carried out, the detection accuracy is further ensured, and the working efficiency can be remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of electric water heater application, and in particular to a performance detection device for electric water heater accessories. Background Art

[0002] Electric water heaters are commonly used hot water supply equipment in homes and commercial places. They use electricity to heat the water in the water tank to the set temperature for daily use. Electric water heaters contain a variety of accessories, which are generally divided into heating elements, temperature control accessories, safety accessories and electrical accessories. Among them, the heating element generally uses a heating tube or an electric heating rod. The heating tube is usually made of a metal tube with a resistance wire inside. When current passes through the resistance wire, it generates heat, thereby heating the surrounding water.

[0003] Since the heating tube works in water, in order to ensure that the heating tube does not leak during use and to ensure the safe operation of the electric water heater, the heating tube is generally tested for air tightness after production is completed.

[0004] There are many ways to detect the air tightness of existing heating tubes. The most common one is to inflate the opening at one end of the heating tube installation port, and close the opening at the other end in real time, and use an ultrasonic detector to detect the ultrasonic signal generated by the gas leakage. Although this method can find the leakage point, for the heating tube, when the production is completed, it is only necessary to judge whether it is qualified. The ultrasonic detector needs to perform a comprehensive detection on a single heating tube, and the detection takes a long time to complete. The work efficiency is low, and it is not suitable for batch detection of heating tubes. In addition, when the heating tube is working, there is high pressure on the outside. The internal pressurization method does not meet the specific working state of the heating tube and is not conducive to judging the qualified standard. Summary of the invention

[0005] Technical problem to be solved: The present invention provides an electric water heater accessories performance detection device that can solve the above-mentioned problems.

[0006] Technical solution: In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: an electric water heater accessory performance detection device, comprising an outer frame, a front frame is fixedly connected to the front end of the outer frame, a plurality of mounting holes penetrating front and rear are opened on the front frame, the mounting holes are used to place the tube body of the heating tube, a sealing mechanism for closing the two mounting ports of the plurality of heating tubes is provided in the front frame, and a covering mechanism for separately sealing and covering the tube bodies of the plurality of heating tubes is provided between the rear side walls of the front frame and the outer frame.

[0007] The sealing mechanism includes a movable plate movably arranged in the front frame, and sealing caps are fixedly connected to two mounting openings on the movable plate corresponding to each heating tube. A pressure gauge is installed on one of the two sealing caps installed on a single heating tube. A docking assembly for controlling its forward and backward movement is commonly provided on both sides of the movable plate, and a locking tube assembly for locking the tube body of each heating tube is provided in the rear side wall of the front frame.

[0008] The covering mechanism includes a movable plate 2 movably arranged between the front frame and the rear side wall of the outer frame, and a plurality of covering tubes are distributed on the movable plate 2 corresponding to the tube body of each heating tube. A threaded sleeve is fixedly connected to each covering tube on the rear side wall of the front frame, and the threaded sleeve is connected to the front end thread of the covering tube. A sealing ring is fixedly connected to the front end of the covering tube. Two docking components for controlling its forward and backward movement are provided on both sides of the movable plate 2, and a screw-on component for controlling the threaded connection with each threaded sleeve is provided on the rear side of each covering tube.

[0009] By using the sealing mechanism and the covering mechanism in coordination, the air tightness detection of multiple heating tubes can be completed simultaneously.

[0010] As a preferred technical solution of the present invention, the docking assembly includes a screw rod rotatably connected to the left side of the front frame, and a guide rod fixedly connected to the right side of the front frame. The left side of the movable plate is threadedly connected to the screw rod, and the right side of the movable plate is slidingly connected to the guide rod. The front end of the screw rod extends to the outside of the front frame and is fixedly connected to the output end of the motor, and the motor is fixedly connected to the outside of the front frame.

[0011] As a preferred technical solution of the present invention, the locking tube assembly includes a through-hole which penetrates vertically on the rear side wall of the front frame, a clamping plate is symmetrically and slidably connected in the through-hole, lubricating oil is dripped into the position where the through-hole and the clamping plate meet, and double-axis electric push rods distributed vertically are fixedly connected to the positions corresponding to the clamping plates on the left and right sides of the front frame, and the two output ends of the double-axis electric push rods are respectively fixedly connected to the clamping plates on the upper and lower sides, and the corresponding mounting holes of the clamping plates on both sides are provided with arc-shaped clamping holes for clamping the heating tube body, and the ends of the clamping plates on both sides close to each other are respectively fixedly connected with sealing strips.

[0012] As a preferred technical solution of the present invention, the docking component 2 includes a screw rod 2 rotatably connected to the left side of the outer frame, and a plurality of guide rods 2 fixedly connected to the inner part of the outer frame. The left side of the movable plate 2 is threadedly connected to the screw rod 2, the movable plate 2 is slidingly connected to the plurality of guide rods 2, the front end of the screw rod 2 extends to the outside of the outer frame and is fixedly connected to the output end of the motor 2, and the motor 2 is fixedly connected to the outside of the outer frame.

[0013] As a preferred technical solution of the present invention, the rotational connection assembly includes a belt rotating gear fixedly connected to the rear end center of each bag tube, the belt rotating gear is a long gear structure, and a linkage gear is meshed and connected between two adjacent belt rotating gears. The linkage gear is rotatably connected to the movable plate two through a rotating rod, and the right side of the rightmost belt rotating gear is also meshed and connected with a driving gear, and the driving gear is fixedly connected to the output end of the motor three, and the motor three is fixedly connected to the movable plate two. The rear end of each bag tube is commonly provided with a pressurizing component for applying pressure to the interior thereof, and the connection position between the bag tube and the movable plate two is provided with a buffer component for rotating the bag tube.

[0014] As a preferred technical solution of the present invention, the pressurizing component includes a gas branch pipe rotatably connected to the rear end center of each package tube, and the common pipeline of each gas branch pipe is connected to the gas connecting pipe. The gas connecting pipe is fixedly connected to the movable plate 2 through a fixed frame. The gas connecting pipe is also provided with an input pipe connected to the external boosting equipment through a pipeline.

[0015] As a preferred technical solution of the present invention, the buffer component includes a mounting sleeve rotatably connected to the rear side of the ring wall of the tube, the mounting sleeve is slidably connected to the movable plate 2, the front side of the mounting sleeve is fixedly connected to the limiting ring 1, the rear side of the mounting sleeve is fixedly connected to the limiting ring 2, and a spring is provided on a section of the mounting sleeve between the movable plate 2 and the limiting ring 1.

[0016] Beneficial effects:

[0017] 1. The sealing mechanism adopted in the present invention can automatically seal the installation openings of multiple heating tubes to avoid air leakage at the installation openings of the heating tubes, and can detect the air pressure inside the heating tubes to observe in real time whether there is any pressure change in the air pressure inside the heating tubes. It is intuitive and convenient to use.

[0018] 2. The wrapping mechanism used in the present invention can wrap the heating tube externally, and use the pressurization method to simulate the working environment of the heating tube in real time when it is used. The working process is completed automatically, which saves time and effort.

[0019] 3. The sealing mechanism and the covering mechanism adopted in the present invention are used together to perform airtight quality inspection on multiple heating tubes at a time. The inspection adopts the external pressurization method which is more in line with the use conditions of the heating tubes, and truly feeds back the application status of the heating tubes. The overall completion is automated, and the use is highly intelligent. Multiple groups of heating tubes can be inspected simultaneously, which can not only perform comparisons and further ensure the inspection accuracy, but also significantly improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure from the first viewing angle of the present invention.

[0022] Figure 2 It is a schematic diagram of the stereoscopic structure from a second viewing angle of the present invention.

[0023] Figure 3 It is a schematic diagram of the top structure of the present invention.

[0024] Figure 4 The present invention Figure 3 Schematic diagram of the enlarged structure of area A in the middle.

[0025] Figure 5 The present invention Figure 3 Schematic diagram of the enlarged structure of area B in the middle.

[0026] Figure 6 It is a schematic diagram of the cross-sectional structure of the rear side wall of the front frame of the present invention.

[0027] Figure 7 It is the appearance diagram of the heating tube of the present invention.

[0028] In the figure: 1, outer frame; 2, front frame; 3, blocking mechanism; 31, docking assembly 1; 311, screw rod 1; 312, motor 1; 313, guide rod 1; 32, locking tube assembly; 321, double-axis electric push rod; 322, tightening plate; 323, sealing strip; 33, moving plate 1; 34, sealing cap; 35, barometer; 4, covering mechanism; 41, docking assembly 2; 411, screw rod 2; 412, motor 2; 413, guide rod 2; 4 2. Rotary joint assembly; 421. Buffer component; 4211. Limiting ring one; 4212. Mounting sleeve; 4213. Limiting ring two; 4214. Spring; 422. Belt gear; 423. Linkage gear; 424. Driving gear; 425. Motor three; 426. Pressurizing component; 4261. Fixed frame; 4262. Gas transmission connecting pipe; 4263. Gas transmission branch pipe; 43. Moving plate two; 44. Wrapping tube; 45. Sealing ring; 46. Threaded sleeve. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0030] See also Figure 1 A performance detection device for electric water heater accessories includes an outer frame 1, a front frame 2 is fixedly connected to the front end of the outer frame 1, a plurality of mounting holes penetrating front and rear are opened on the front frame 2, the mounting holes are used to place the tube body of the heating tube, a blocking mechanism 3 for sealing two mounting openings of multiple heating tubes is provided in the front frame 2, and a covering mechanism 4 for sealing and covering the tube bodies of multiple heating tubes is provided between the front frame 2 and the rear side wall of the outer frame 1.

[0031] See also Figure 1 and Figure 3 The blocking mechanism 3 includes a movable plate 33 movably arranged in the front frame 2, and two mounting ports on the movable plate 33 corresponding to each heating tube are fixedly connected with a sealing cap 34. Among the two sealing caps 34 installed on a single heating tube, one of the sealing caps 34 is installed with a pressure gauge 35. Both sides of the movable plate 33 are provided with a docking assembly 31 for controlling its forward and backward movement, and a locking tube assembly 32 for locking the tube body of each heating tube is provided in the rear side wall of the front frame 2.

[0032] During specific operation, the pressure change in the heating tube is sensed by the barometer 35. If the pressure continues to increase, it means that the heating tube is defective and of unqualified quality. If the pressure remains unchanged, it means that the heating tube is intact and of qualified quality.

[0033] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The covering mechanism 4 includes a movable plate 43 movably arranged between the front frame 2 and the rear side wall of the outer frame 1. A plurality of covering tubes 44 are distributed on the movable plate 43 corresponding to the tube body of each heating tube. A threaded sleeve 46 is fixedly connected to each covering tube 44 on the rear side wall of the front frame 2. The threaded sleeve 46 is connected to the front end of the covering tube 44 by a thread. A sealing ring 45 is fixedly connected to the front end of the covering tube 44. A docking assembly 41 for controlling its forward and backward movement is provided on both sides of the movable plate 43. A screw connection assembly 42 for controlling its threaded connection with each threaded sleeve 46 is provided on the rear side of each covering tube 44.

[0034] During specific operation, the wrapping tube 44 and the threaded sleeve 46 are connected to form an outer wrapping structure for covering the heating tube. The sealing ring 45 and the threaded structure cooperate to ensure the sealing of the connection between the wrapping tube 44 and the threaded sleeve 46. The inside of the wrapping tube 44 is pressurized. If the tube body of the heating tube has defects, the gas will enter the heating tube. If the heating tube has no defects, the gas cannot enter the heating tube.

[0035] By using the sealing mechanism 3 and the covering mechanism 4 in coordination, the air tightness detection of multiple heating tubes can be completed simultaneously.

[0036] See also Figure 1 and Figure 3 The docking assembly 31 includes a screw rod 311 rotatably connected to the left side of the front frame 2, and a guide rod 313 fixedly connected to the right side of the front frame 2. The left side of the movable plate 33 is threadedly connected to the screw rod 311, and the right side of the movable plate 33 is slidingly connected to the guide rod 313. The front end of the screw rod 311 extends to the outside of the front frame 2 and is fixedly connected to the output end of the motor 312. The motor 312 is fixedly connected to the outside of the front frame 2.

[0037] During specific operation, the motor 312 controls the screw rod 311 to rotate, and the screw rod 311 controls the moving plate 33 to move forward and backward along the guide rod 313, and the moving plate 33 brings the sealing caps 34 to seal the installation opening of the heating tube.

[0038] See also Figure 1 and Figure 6 The locking tube assembly 32 includes a through hole which penetrates vertically on the rear side wall of the front frame 2, and a clamping plate 322 is symmetrically slidably connected in the through hole, and lubricating oil is dripped into the position where the through hole and the clamping plate 322 meet. The positions on the left and right sides of the front frame 2 corresponding to the clamping plates 322 are fixedly connected with double-axis electric push rods 321 distributed vertically, and the two output ends of the double-axis electric push rods 321 are respectively fixedly connected to the clamping plates 322 on the upper and lower sides, and the corresponding mounting holes of the clamping plates 322 on both sides are provided with arc-shaped clamping holes for clamping the heating tube body, and the ends of the clamping plates 322 on both sides that are close to each other are respectively fixedly connected with sealing strips 323.

[0039] During specific operation, the two pairs of clamping plates 322 are controlled to approach each other through the dual-axis electric push rod 321, and the heating tube body is locked by the circular hole formed by the arc-shaped bayonet joint. The sealing strip 323 is used to increase the sealing of the connection to avoid air leakage at the connection position with the heating tube body. Lubricating oil can ensure the smooth movement of the clamping plate 322 while ensuring the airtightness of the through-opening and the connection position of the clamping plate 322.

[0040] See also Figure 1 , Figure 2 and Figure 3 The docking assembly 41 includes a screw rod 411 rotatably connected to the left side of the outer frame 1, and a plurality of guide rods 413 fixedly connected to the inner side of the outer frame 1. The left side of the movable plate 43 is threadedly connected to the screw rod 411. The movable plate 43 is slidingly connected to the plurality of guide rods 413. The front end of the screw rod 411 extends to the outside of the outer frame 1 and is fixedly connected to the output end of the motor 412. The motor 412 is fixedly connected to the outside of the outer frame 1.

[0041] During specific operation, the motor 412 controls the screw rod 411 to rotate, and the screw rod 411 controls the moving plate 43 to move forward and backward along the guide rod 413, and the moving plate 43 drives each wrapping tube 44 to move toward the front frame 2, and the wrapping tube 44 is connected with the front frame 2 to form a closed environment outside the heating tube. When the moving plate 43 carries the wrapping tube 44 away from the front frame 2, there is enough space between the moving plate 43 and the front frame 2 to facilitate the locking and installation of the heating tube.

[0042] See also Figure 1 , Figure 2 and Figure 5The rotational connection assembly 42 includes a belt rotating gear 422 fixedly connected to the rear end center of each bag tube 44, the belt rotating gear 422 is a long gear structure, and a linkage gear 423 is meshed and connected between two adjacent belt rotating gears 422, and the linkage gear 423 is rotatably connected to the movable plate 2 43 through a rotating rod, and the right side of the rightmost belt rotating gear 422 is also meshed and connected with a driving gear 424, and the driving gear 424 is fixedly connected to the output end of the motor three 425, and the motor three 425 is fixedly connected to the movable plate 2 43. The rear end of each bag tube 44 is commonly provided with a pressurizing component 426 for applying pressure to the interior thereof, and the connection position between the bag tube 44 and the movable plate 2 is provided with a buffer component 421 for rotating buffering the bag tube 44.

[0043] See also Figure 2 and Figure 3 The pressurizing component 426 includes a gas branch pipe 4263 rotatably connected to the rear end center of each package tube 44. The common pipeline of each gas branch pipe 4263 is connected to the gas connecting pipe 4262. The gas connecting pipe 4262 is fixedly connected to the movable plate 2 43 through a fixing frame 4261. The gas connecting pipe 4262 is also provided with an input pipe connected to the external boosting equipment through a pipeline.

[0044] See also Figure 1 and Figure 5 The buffer component 421 includes a mounting sleeve 4212 rotatably connected to the rear side of the ring wall of the bag tube 44, the mounting sleeve 4212 is slidably connected to the movable plate 2 43, the front side of the mounting sleeve 4212 is fixedly connected to the limiting ring 1 4211, the rear side of the mounting sleeve 4212 is fixedly connected to the limiting ring 2 4213, and a spring 4214 is provided on a section of the mounting sleeve 4212 between the movable plate 2 43 and the limiting ring 1 4211.

[0045] During specific operation, when the bag tube 44 and the front frame 2 are docked, the spring 4214 compresses the installation sleeve 4212 and the bag tube 44 to move backward a distance on the movable plate 2 43, and the spring 4214 presses the front end of the bag tube 44 against the front frame 2, and the motor 3 425 controls the rotation of the driving gear 424, and the driving gear 424 drives the rightmost belt rotating gear 422 to rotate, and the linkage gear 423 drives each belt rotating gear 422 to rotate synchronously, so that the bag tube 44 rotates, and under the restoring action of the spring 4214, the threaded sleeve 46 is screwed into the inside of the bag tube 44, and the heating pipe is fully surrounded and sealed, and the air is transmitted to the gas transmission joint pipe 4262 through the operation of the boosting equipment, and the gas transmission joint pipe 4262 disperses the air to the inside of each bag tube 44 through the gas transmission branch pipe 4263, so that the inside of the bag tube 44 is pressurized.

[0046] When in use: S1: first move the movable plate 2 43 to the rear side of the outer frame 1, and then install multiple heaters one by one on the rear side wall of the front frame 2. During installation, pass one end of the installation port of the heating tube through the installation hole. After placement is completed, control the two pairs of tightening plates 322 to approach each other through the dual-axis electric push rod 321, and use the arc-shaped bayonet to connect the circular hole to tightly lock the heating tube body, and use the sealing strip 323 to increase the connection sealing.

[0047] S2: Then the motor 1 312 controls the screw rod 1 311 to rotate, and the screw rod 1 311 controls the movable plate 1 33 to move forward and backward along the guide rod 1 313, and the movable plate 1 33 brings the sealing caps 34 to seal the installation opening of the heating tube, and then the motor 2 412 controls the screw rod 2 411 to rotate, and the screw rod 2 411 controls the movable plate 2 43 to move forward and backward along the guide rod 2 413, and the movable plate 2 43 drives the various wrapping tubes 44 to move toward the front frame 2, and the wrapping tubes 44 are connected to the front frame 2 to form a closed environment outside the heating tube.

[0048] S3: When the bag tube 44 and the front frame 2 are docked, the spring 4214 compresses the installation sleeve 4212 and the bag tube 44 to move backward a distance on the movable plate 2 43, and the spring 4214 presses the front end of the bag tube 44 against the front frame 2, and then the motor 3 425 controls the rotation of the driving gear 424, and the driving gear 424 drives the rightmost belt rotating gear 422 to rotate, and the linkage gear 423 drives each belt rotating gear 422 to rotate synchronously, so that the bag tube 44 rotates, and under the restoring action of the spring 4214, the threaded sleeve 46 is screwed into the inside of the bag tube 44, and the heating pipe is fully enclosed, and then the air is transmitted to the gas transmission pipe 4262 through the operation of the booster equipment, and the gas transmission pipe 4262 disperses the air to the inside of each bag tube 44 through the gas transmission branch pipe 4263, so that the inside of the bag tube 44 is pressurized.

[0049] S4: The pressure change in the heating tube is sensed by the barometer 35. If the pressure continues to increase, it means that the heating tube is defective and the quality is unqualified. If the pressure remains unchanged, it means that the heating tube is intact and the quality is qualified.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A performance testing device for electric water heater accessories, comprising an outer frame (1), the front end of the outer frame (1) being fixedly connected to a front frame (2), the front frame (2) being provided with a plurality of mounting holes extending from front to back, the mounting holes being used to place a tube body of a heating tube, characterized in that: A blocking mechanism (3) for sealing two installation openings of the plurality of heating tubes is provided in the front frame (2), and a covering mechanism (4) for sealing and covering the tube bodies of the plurality of heating tubes is provided between the front frame (2) and the rear side wall of the outer frame (1); The blocking mechanism (3) comprises a movable plate (33) movably arranged in the front frame (2); two mounting openings on the movable plate (33) corresponding to the heating tubes are fixedly connected with sealing caps (34); one of the two sealing caps (34) mounted on a single heating tube is equipped with a pressure gauge (35); both sides of the movable plate (33) are provided with a docking assembly (31) for controlling its forward and backward movement; and a locking tube assembly (32) for locking the tube body of each heating tube is provided in the rear side wall of the front frame (2); The covering mechanism (4) comprises a second movable plate (43) movably arranged between the front frame (2) and the rear side wall of the outer frame (1); a plurality of covering tubes (44) are distributed on the second movable plate (43) corresponding to the tube bodies of the heating tubes; a threaded sleeve (46) is fixedly connected to each covering tube (44) on the rear side wall of the front frame (2); the threaded sleeve (46) is threadedly connected to the front end of the covering tube (44); a sealing ring (45) is fixedly connected to the front end of the covering tube (44); two docking assemblies (41) for controlling the forward and backward movement of the second movable plate (43) are provided on both sides; and a screw connection assembly (42) for controlling the threaded connection between the covering tube (44) and the threaded sleeve (46) is provided on the rear side of each covering tube (44); By using the blocking mechanism (3) and the covering mechanism (4) in coordination, the air tightness detection of a plurality of heating tubes can be completed simultaneously.

2. The electric water heater accessories performance detection device according to claim 1, characterized in that: The docking assembly (31) comprises a screw rod (311) rotatably connected to the left side of the front frame (2), and a guide rod (313) fixedly connected to the right side of the front frame (2); the left side of the movable plate (33) is threadedly connected to the screw rod (311); the right side of the movable plate (33) is slidably connected to the guide rod (313); the front end of the screw rod (311) extends to the outside of the front frame (2) and is fixedly connected to the output end of the motor (312); and the motor (312) is fixedly connected to the outside of the front frame (2).

3. The electric water heater accessories performance detection device according to claim 1, characterized in that: The locking tube assembly (32) comprises a through hole which penetrates vertically and is opened on the rear side wall of the front frame (2), a clamping plate (322) is symmetrically slidably connected in the through hole, lubricating oil is dripped into the position where the through hole and the clamping plate (322) meet, and double-axis electric push rods (321) distributed vertically are fixedly connected at the positions corresponding to the clamping plates (322) on the left and right sides of the front frame (2), and the two output ends of the double-axis electric push rods (321) are respectively fixedly connected to the clamping plates (322) on the upper and lower sides, and arc-shaped clamping holes for clamping the heating tube body are opened in the corresponding mounting holes of the clamping plates (322) on both sides, and sealing strips (323) are respectively fixedly connected at the ends of the clamping plates (322) on both sides that are close to each other.

4. The electric water heater accessories performance detection device according to claim 1, characterized in that: The second docking assembly (41) comprises a second screw rod (411) rotatably connected to the left side of the inner part of the outer frame (1), and a plurality of second guide rods (413) fixedly connected to the inner part of the outer frame (1); the left side of the second movable plate (43) is threadedly connected to the second screw rod (411); the second movable plate (43) is slidably connected to the plurality of second guide rods (413); the front end of the second screw rod (411) extends to the outside of the outer frame (1) and is fixedly connected to the output end of the second motor (412); and the second motor (412) is fixedly connected to the outside of the outer frame (1).

5. The electric water heater accessories performance detection device according to claim 1, characterized in that: The rotational connection assembly (42) comprises a belt rotating gear (422) fixedly connected to the rear end center of each package tube (44), the belt rotating gear (422) is a long gear structure, and a linkage gear (423) is meshed and connected between two adjacent belt rotating gears (422), and the linkage gear (423) is rotatably connected to the second moving plate (43) through a rotating rod. The right side of the rightmost belt rotating gear (422) is also meshed and connected with a driving gear (424), and the driving gear (424) is fixedly connected to the output end of the third motor (425), and the third motor (425) is fixedly connected to the second moving plate (43). The rear end of each package tube (44) is commonly provided with a pressurizing component (426) for applying pressure to the interior thereof, and the connection position between the package tube (44) and the second moving plate is provided with a buffer component (421) for performing rotational connection buffering on the package tube (44).

6. The electric water heater accessory performance detection device according to claim 5, characterized in that: The pressurizing component (426) includes a gas supply branch pipe (4263) rotatably connected to the rear end center of each package tube (44), and each gas supply branch pipe (4263) is connected to a gas supply joint pipe (4262) through a common pipeline. The gas supply joint pipe (4262) is fixedly connected to the second movable plate (43) through a fixing frame (4261). The gas supply joint pipe (4262) is also provided with an input pipe for pipeline communication with an external pressurizing device.

7. The electric water heater accessory performance detection device according to claim 5, characterized in that: The buffer component (421) comprises a mounting sleeve (4212) rotatably connected to the rear side of the ring wall of the package tube (44); the mounting sleeve (4212) is slidably connected to the movable plate 2 (43); the front side of the mounting sleeve (4212) is fixedly connected to the limiting ring 1 (4211); the rear side of the mounting sleeve (4212) is fixedly connected to the limiting ring 2 (4213); and a spring (4214) is provided on a section of the mounting sleeve (4212) between the movable plate 2 (43) and the limiting ring 1 (4211).

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