A steel cylinder water pressure testing device for fire extinguisher production

Abstract

The present invention relates to the field of fire extinguisher testing, and specifically discloses a steel cylinder water pressure testing device for fire extinguisher production, which also includes: a connection fixedly connected to a water pump; a bracket B fixedly connected to a base; a mobile frame rotatably connected to the bracket B; a servo motor fixedly connected to the base; a semi-ring plate fixedly connected to a branch of the mobile frame; a fixing member arranged on the branch of the mobile frame, etc. The present invention uses a rotating mobile frame, a semi-ring plate and a fixing member to control the movement of the fire extinguisher steel cylinder, and then switches to use a limit frame to support the fire extinguisher steel cylinder, cooperates with a contact wheel and a hub motor to control the rotation of the fire extinguisher steel cylinder, and connects the fire extinguisher steel cylinder to a water pump for a sealing test. Therefore, the use of the present invention does not require manual repeated rotation of the fire extinguisher steel cylinder, reduces the mechanical repeated actions of the present invention, simplifies the operating steps of the test process, and thus improves the use effect of the present invention.

Description

Technical Field

[0001] The invention relates to the field of fire extinguisher testing, and in particular discloses a steel cylinder water pressure testing device used for fire extinguisher production. Background Art

[0002] Because the key to preserving the fire extinguishing agent filled in the fire extinguisher lies in the sealing of the fire extinguisher cylinder, the fire extinguisher cylinder needs to be tested for sealing after production and processing to prevent the fire extinguishing agent from failing in the fire extinguisher cylinder with insufficient sealing and affecting the normal fire extinguishing function of the fire extinguisher.

[0003] The current testing method for fire extinguisher cylinders is to use a water pressure test method, which is to fill the fire extinguisher cylinder with water and gradually increase the pressure. When the pressure reaches a preset value and is maintained for a certain period of time, the surface of the fire extinguisher cylinder can be observed to see if there is any leakage, and the observation inside the fire extinguisher cylinder can be recorded using a pressure test instrument.

[0004] When using the above-mentioned water pressure test method, because the fire extinguisher cylinder needs to be pressurized after adding water, the water filling port of the water adding device and the inlet of the fire extinguisher cylinder need to be kept sealed. Therefore, the two are connected by threaded connection to close the connection gap between them. Therefore, during the fire extinguisher cylinder sealing test, the fire extinguisher cylinder needs to be continuously rotated for loading and unloading, resulting in repetitive and mechanical loading and unloading actions, which makes the test steps cumbersome and laborious. Summary of the invention

[0005] The present invention provides a convenient and easy-to-operate cylinder water pressure testing device for fire extinguisher production, aiming to solve the technical defects mentioned in the above background technology.

[0006] The technical solution of the present invention includes: a base; a mounting frame fixedly connected to the base; a water pump slidably connected to the mounting frame; a pressure gauge fixedly connected to the mounting frame; and also includes: a connecting nozzle fixedly connected to the water pump; a bracket B fixedly connected to the base; a mobile frame rotatably connected to the bracket B, and a branch is arranged on the mobile frame; a servo motor fixedly connected to the base, and the output shaft of the servo motor is fixed to the rotating shaft of the mobile frame; a semi-ring plate fixedly connected to the branch of the mobile frame; a fixing piece arranged on the branch of the mobile frame; a limit frame rotatably connected to the bracket B; a reset torsion spring A fixedly connected between the bracket B and the limit frame; a contact wheel rotatably connected to the limit frame; and a hub motor fixedly connected to the limit frame, and the hub motor is fixed to one of the contact wheels.

[0007] Furthermore, the mobile frame is provided with at least three branches, and each branch of the mobile frame is centrally symmetrical with its rotation midpoint as the center; the number of branches of the mobile frame is N, and when the servo motor controls the rotation of the mobile frame, the mobile frame is controlled to stop once every time the mobile frame rotates 360 / N degrees, so that the mobile frame is rotated a complete circle, and all the branches of the mobile frame return to their original positions.

[0008] Furthermore, the fixing part includes: a connecting rod fixedly connected to the branch of the movable frame; an electromagnet slidably connected to the connecting rod, the electromagnet is magnetized when energized and demagnetized when powered off; and a reset spring A fixedly connected between the electromagnet and the connecting rod.

[0009] Furthermore, it also includes: a fixing ring fixedly connected to the outside of the water pump; and a connecting rod group A rotatably connected between the fixing ring and the limiting frame.

[0010] Furthermore, it also includes: a grinding block fixedly connected to the semi-annular plate.

[0011] Furthermore, it also includes: a bracket C fixedly connected to the rear side of the base; a discharging plate connected to the bracket C is rotated, and the discharging plate is tilted rearward and downward; a connecting rod group B is rotated between the discharging plate and the bracket C; and a reset torsion spring B is fixedly connected between the connecting rod group B and the discharging plate.

[0012] Furthermore, the base is provided with a guide groove, which is located on the rear side of the discharge plate, and also includes: a water filter plate fixedly connected to the base; a guide rod fixedly connected to the water filter plate; a support ring slidably connected to the guide rod; and a reset spring B fixedly connected between the guide rod and the support ring.

[0013] Furthermore, it also includes: an air pump fixedly connected to the base, the air pump is located directly below the support ring; and a sealing cover rotatably connected to the nozzle of the air pump.

[0014] The beneficial effects that can be achieved by the present invention are: The present invention uses a rotating mobile frame, a semi-ring plate and a fixing part to control the movement of the fire extinguisher cylinder, and then switches to use a limit frame to support the fire extinguisher cylinder, cooperates with a contact wheel and a hub motor to control the rotation of the fire extinguisher cylinder, and connects the fire extinguisher cylinder to a water pump for a sealing test. Therefore, the present invention does not require manual repeated rotation of the fire extinguisher cylinder, reduces the mechanical repetitive actions of the present invention, simplifies the operating steps of the test process, and thus improves the use effect of the present invention. The present invention is provided with a plurality of branches on the mobile frame, so that when the present invention is used, the processes of loading, unloading and testing can be carried out simultaneously, thereby improving the test efficiency of the present invention. The present invention enables the discharge plate to cooperate with the support ring to carry out a safe unloading process for the fire extinguisher cylinder, and at the same time handles the water added in the fire extinguisher cylinder during the test, and cooperates with the air pump to dry the residual water in the fire extinguisher cylinder, so as to facilitate the subsequent production and processing of the fire extinguisher cylinder, further improving the use effect of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the position structure of the water pump in the present invention.

[0017] Figure 3 It is a schematic diagram of the connection structure of the water pump in the present invention.

[0018] Figure 4 It is a schematic diagram of the connection structure of the mobile frame in the present invention.

[0019] Figure 5 This is a separation diagram of the connection structure of the electromagnet in the present invention.

[0020] Figure 6 It is a schematic diagram of the connection structure of the contact wheel in the present invention.

[0021] Figure 7 It is a schematic diagram of the position structure of the discharge plate, support ring and air pump in the present invention.

[0022] Figure 8 It is a schematic diagram of the connection structure of the discharge plate in the present invention.

[0023] Fig. 9 It is a schematic diagram of the connection structure between the support ring and the air pump in the present invention.

[0024] The markings in the attached drawings are: 1-base, 101-bracket A, 102-bracket B, 103-mounting frame, 2-water pump, 201-mounting seat, 202-connecting nozzle, 203-water pipe, 204-manipulator, 205-pressure gauge, 3-mobile frame, 301-servo motor, 302-semi-ring plate, 303-grinding block, 304-electromagnet, 305-connecting rod, 306-reset spring A, 4- Contact wheel, 401-limiting frame, 402-reset torsion spring A, 403-hub motor, 404-fixing ring, 405-connecting rod group A, 5-discharging plate, 501-bracket C, 502-connecting rod group B, 503-reset torsion spring B, 504-block, 6-water filter plate, 601-guide rod, 602-support ring, 603-reset spring B, 604-guide groove, 7-air pump, 701-cover. DETAILED DESCRIPTION

[0025] It should be noted that the technical solution of the present invention will be described in detail and completely below in combination with the drawings provided by the present invention and the marks in the drawings, corresponding to the technical solution of the present invention. However, the described content must only be one of the embodiments presented by the technical solution of the present invention, and cannot cover all the contents of the present invention. Therefore, based on the embodiments listed in the present invention, any embodiments derived from the embodiments obtained by those skilled in the art without substantial creation shall fall within the scope of protection of the present invention.

[0026] Embodiment: A cylinder water pressure test device for fire extinguisher production, see Figure 1-Figure 2 , including: a base 1; a bracket A101 fixedly mounted on the base 1. When the fire extinguisher cylinder is tested for sealing, the fire extinguisher cylinder is loaded horizontally onto the bracket A101 with the bottle mouth facing forward.

[0027] See also Figure 2-Figure 3 , further comprising: a mounting frame 103 fixedly mounted on the base 1, the mounting frame 103 being located at the rear side of the bracket A101; a mounting seat 201 fixedly mounted on the top of the mounting frame 103; a water pump 2 slidably mounted in the mounting seat 201; a connecting nozzle 202 fixedly mounted on the water pump 2, the connecting nozzle 202 facing downward, the outer surface of the connecting nozzle 202 being provided with threads, the threads being matched with threads at the mouth of the fire extinguisher cylinder; a water pipe 203 fixedly mounted on the mounting frame 103, the water pipe 203 being connected to the water pump 2, and being used to continuously deliver water to the water pump 2; a controller 204 fixedly mounted on the mounting frame 103 for operating the water pump 2; and a pressure gauge 205 fixedly mounted on the mounting frame 103 for testing the pressure. The fire extinguisher cylinder is threadedly mounted on the connecting nozzle 202, the water pump 2 is started to fill the fire extinguisher cylinder with water, and the fire extinguisher cylinder is judged to have a problem of insufficient sealing by the pressure gauge 205 and whether the outer surface of the fire extinguisher cylinder is water-seeping.

[0028] See also Figure 4-Figure 5 , and also includes: a bracket B102 fixedly mounted on the base 1, the bracket B102 is located below the mounting frame 103; a mobile frame 3 rotatably mounted on the bracket B102, the mobile frame 3 is provided with four branches, and each branch of the mobile frame 3 is centrally symmetrical with its rotation midpoint as the center, the branches of the mobile frame 3 can pass through the bracket A101, and the fire extinguisher cylinder on the transport bracket A101; a servo motor 301 fixedly mounted on the mounting frame 103, the output shaft of the servo motor 301 is fixed to the rotating shaft of the mobile frame 3; a semi-ring plate 302 fixedly mounted on each branch of the mobile frame 3, the semi-ring openings of the four semi-ring plates 302 are in the same direction; a fixing piece arranged on each semi-ring plate 302, the fixing piece is used to fix the fire extinguisher cylinder on the semi-ring plate 302. The servo motor 301 is started, and each time the movable frame 3 is controlled to rotate 90 degrees, it will stop intermittently. When the movable frame 3 rotates 360 degrees and stops intermittently 4 times, all branches of the movable frame 3 return to the initial position; when the semi-annular plate 302 moves to the front position, the fire extinguisher cylinder is loaded onto the semi-annular plate 302, and the fixing part fixes the fire extinguisher cylinder. When the semi-annular plate 302 moves to the upper position, the fire extinguisher cylinder is moved to the bottom of the water pump 2, and the bottle mouth of the fire extinguisher cylinder faces the connecting nozzle 202. When the semi-annular plate 302 moves to the rear position, the fixing part releases the fire extinguisher cylinder, and the fire extinguisher cylinder can be unloaded; the movable frame 3 is provided with four branches, so that the use of the test device can simultaneously perform the loading, unloading and testing processes, thereby improving the testing efficiency of the test device.

[0029] See also Figure 5 The fixing part includes: a connecting rod 305 fixedly mounted on the branch of the mobile frame 3; an electromagnet 304 slidably mounted on the connecting rod 305, the electromagnet 304 can contact the fire extinguisher cylinder placed on the semi-ring plate 302, and the electromagnet 304 is magnetic after being energized, and can be magnetically attracted to the fire extinguisher cylinder; a reset spring A306 sleeved on the connecting rod 305, and the two ends of the reset spring A306 are respectively fixedly mounted on the electromagnet 304 and the connecting rod 305. When the electromagnet 304 is energized, the electromagnet 304 slides toward the fire extinguisher cylinder and absorbs the fire extinguisher cylinder, and the reset spring A306 is stretched, so that the fire extinguisher cylinder is fixed on the semi-ring plate 302, and when the electromagnet 304 is powered off and loses magnetism, the reset spring A306 makes the electromagnet 304 return to its original position away from the fire extinguisher cylinder, and at this time, the fixing part releases the fixation of the fire extinguisher cylinder.

[0030] See also Figure 6, and also includes: a limit frame 401 rotatably mounted on the bracket B102, the limit frame 401 is arranged on the left and right sides of the bracket B102; a reset torsion spring A402 fixedly mounted between the bracket B102 and the limit frame 401, the reset torsion spring A402 enables the limit frame 401 to surround and limit the fire extinguisher cylinder; a contact wheel 4 rotatably mounted on the limit frame 401, the limit frame 401 is in rolling contact with the fire extinguisher cylinder through the contact wheel 4; a hub motor 403 fixedly mounted on the limit frame 401, the hub motor 403 is fixed to the right rear contact wheel 4, and controls the rotation of the contact wheel 4. When the fire extinguisher cylinder is moved to the upper position by the semi-ring plate 302, the fire extinguisher cylinder will first push the two limit frames 401 apart, and the reset torsion spring A402 will be twisted to make the fire extinguisher cylinder pass between the two limit frames 401. Then the reset torsion spring A402 will act to make the limit frame 401 close to the fire extinguisher cylinder, and then the fixing of the fire extinguisher cylinder by the fixing part will be released, and the fire extinguisher cylinder will be supported by the limit frame 401. Then the hub motor 403 will be started to drive the contact wheel 4 on the right rear side to rotate, so that the fire extinguisher cylinder is rotated by the contact wheel 4, and the other three contact wheels 4 assist the fire extinguisher cylinder to rotate.

[0031] When using the test device, for easier understanding, in the following description, the branch of the mobile frame 3 located below in the initial state position and its upper half ring plate 302 and the fixing parts will be the main description objects; first, the fire extinguisher cylinder is loaded on the bracket A101, and then the servo motor 301 is started to control the rotation of the mobile frame 3. After the mobile frame 3 rotates the first 90 degrees, the branch of the mobile frame 3 moves to the front side and stops intermittently, and the half ring plate 302 moves to the bottom of the fire extinguisher cylinder and contacts it, and the control electromagnet 304 is energized to fix the fire extinguisher cylinder on the half ring plate 302; therefore, after the mobile frame 3 rotates the second 90 degrees, the fire extinguisher cylinder is moved to between the limit frames 401, and is limited and fixed by the limit frames 401, and the control electromagnet 304 is powered off, and the fire extinguisher cylinder is separated from the half ring plate 302. , and is in turn supported by the limit frame 401 and the bracket B102, and then the hub motor 403 is started to rotate the fire extinguisher cylinder, and the water pump 2 is controlled to drive the connecting nozzle 202, so that the fire extinguisher cylinder is threadedly connected to the connecting nozzle 202, and water is added to the fire extinguisher cylinder to pressurize it for a sealing test; after the test is completed, the hub motor 403 is started to reverse, the fire extinguisher cylinder is separated from the connecting nozzle 202, and the electromagnet 304 is controlled to be energized again, and the fire extinguisher cylinder is fixed on the semi-ring plate 302 again. Therefore, after the mobile frame 3 rotates the third 90 degrees, the fire extinguisher cylinder is detached from the limit frame 401 and moves to the rear position. At this time, the electromagnet 304 is controlled to be powered off, and the fire extinguisher cylinder is unloaded, that is, the entire test process of the fire extinguisher cylinder is completed. Finally, after the mobile frame 3 rotates the fourth 90 degrees, it returns to the initial state position.

[0032] See also Figure 6, and also includes: a fixing ring 404 fixedly mounted on the outside of the water pump 2; a connecting rod group A405 rotatably mounted between the fixing ring 404 and the limiting frame 401, the connecting rod group A405 consists of two connecting rods rotatably connected together, and its connecting part is slidably connected to the mounting frame 103. There are two groups of such connecting rod groups A405.

[0033] When the limit frame 401 is separated by the fire extinguisher cylinder, the limit frame 401 pushes the two groups of connecting rods A405 apart, so that the connecting rods rotate, and the connecting part of the connecting rod group A405 slides upward, so that the fixing ring 404 can move the water pump 2 upward; and after the fire extinguisher cylinder penetrates the limit frame 401 and the limit frame 401 is turned back by the reset torsion spring A402, the limit frame 401 will move the water pump 2 downward through the connecting rod group A405, so that the connecting nozzle 202 contacts the bottle mouth of the fire extinguisher cylinder; by controlling the position of the water pump 2 to move up and down in this way, the position of the water pump 2 can be prevented from affecting the transportation of the fire extinguisher cylinder, and after the fire extinguisher cylinder is transferred, the water pump 2 is moved back to facilitate the connection of the connecting nozzle 202 with the fire extinguisher cylinder. When the fire extinguisher cylinder rotates and connects with the connecting nozzle 202, the water pump 2 will be slightly moved downward for a distance, and the connecting rod group A405 will be slightly deformed to match the movement of the water pump 2.

[0034] See also Figure 5 , and also includes: a grinding block 303 fixedly mounted on the semi-ring plate 302. When the fire extinguisher cylinder is rotated by the contact wheel 4, the grinding block 303 can rub against the fire extinguisher cylinder to grind the weld on the fire extinguisher cylinder, making the surface of the fire extinguisher cylinder smoother and more beautiful.

[0035] See also Figure 7-Figure 8 , and also includes: a bracket C501 fixedly mounted on the rear side of the base 1; a discharging plate 5 rotatably mounted on the bracket C501, the discharging plate 5 tilts rearward and downward, the discharging plate 5 is located below the rear semi-ring plate 302, and inclined surfaces are provided on the left and right sides of the discharging plate 5, so that when the movable frame 3 drives the semi-ring plate 302 to rotate, the semi-ring plate 302 contacts the inclined surface of the discharging plate 5; a connecting rod group B502 rotatably mounted between the discharging plate 5 and the bracket C501, the connecting rod group B502 is used to improve the stability of the discharging plate 5; a reset torsion spring B503 fixedly mounted between the connecting rod group B502 and the discharging plate 5; a stop block 504 fixedly mounted on the lower front side of the discharging plate 5, the stop block 504 can contact the branch at the lower position of the movable frame 3, and a slope is provided on its rear side, so that when the movable frame 3 rotates, the branch of the movable frame 3 contacts the inclined surface of the stop block 504.

[0036] See also Figure 7-Figure 9, and also includes: a base 1 is provided with a guide groove 604 for guiding water, the guide groove 604 is located on the rear side of the discharge plate 5, a water filter plate 6 is fixedly installed on the base 1, and the water filter plate 6 is located directly above the guide groove 604; a guide rod 601 fixedly installed on the water filter plate 6; a support ring 602 slidably installed on the guide rod 601 in an up and down manner; a reset spring B603 is sleeved on the guide rod 601, and the two ends of the reset spring B603 are respectively fixedly installed on the guide rod 601 and the support ring 602.

[0037] When the fire extinguisher cylinder that has completed the test is moved to the rear position, the fixing part releases the fire extinguisher cylinder, and the fire extinguisher cylinder falls on the discharge plate 5, and tilts and slides downward along the discharge plate 5 to the rear, and then the fire extinguisher cylinder falls on the support ring 602 and is supported by the support ring 602. The return spring B603 cushions the impact force when the fire extinguisher cylinder falls. At the same time, the water in the fire extinguisher cylinder flows out during this process, and the guide groove 604 leads the flowing water away. After the fire extinguisher cylinder is completed unloading, the mobile frame 3 rotates 90 degrees, and the branch at the rear of the mobile frame 3 and the semi-ring plate 302 thereon move downward. When the semi-ring plate 302 contacts the discharge plate 5, the semi-ring plate 302 separates the discharge plate 5 through the inclined surfaces on both sides of the discharge plate 5, the connecting rod group B502 is rotated, and the reset torsion spring B503 is twisted, so that the branch of the mobile frame 3 and its upper semi-ring plate 302 can pass through the discharge plate 5, and then the reset torsion spring B503 resets the discharge plate 5 to close the discharge plate 5; similarly, the branch of the mobile frame 3 will pass through the abutment block 504 in the same way and move to the front side of the abutment block 504. At this time, the mobile frame 3 also completes a 90-degree rotation, and the branch of the mobile frame 3 at this position will abut the discharge plate 5, so that the discharge plate 5 cannot rotate. In this way, when the fire extinguisher cylinder is unloaded and falls on the discharge plate 5, the discharge plate 5 does not separate, so that the fire extinguisher cylinder can slide backward to discharge instead of passing through the discharge plate 5.

[0038] See also Figure 1 and Fig. 9 , and also includes: an air pump 7 fixedly mounted on the base 1, the air pump 7 is located directly below the support ring 602; a cover 701 rotatably mounted on the nozzle of the air pump 7, a torsion spring is connected between the cover 701 and the air pump 7, so that the cover 701 can automatically close the nozzle of the air pump 7.

[0039] When the water in the fire extinguisher cylinder is completely poured out, start the air pump 7, and the air blown out by the air pump 7 will open the cover 701 and blow into the fire extinguisher cylinder to dry the remaining water in the fire extinguisher cylinder. After completion, turn off the air pump 7, and the cover 701 will automatically cover again to prevent water from entering the air pump 7.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A cylinder water pressure testing device for fire extinguisher production, comprising: A base (1); a mounting frame (103) fixedly connected to the base (1); a water pump (2) slidably connected to the mounting frame (103), the water pump (2) being used to add water to a fire extinguisher cylinder for a sealing test; a pressure gauge (205) fixedly connected to the mounting frame (103) for testing the pressure in the fire extinguisher cylinder; the device is characterized in that it also includes: a connecting nozzle (202) fixedly connected to the water pump (2), the outer surface of the connecting nozzle (202) being provided with a thread, the thread matching the thread at the mouth of the fire extinguisher cylinder; a bracket B (102) fixedly connected to the base (1); a moving frame (3) rotatably connected to the bracket B (102), the moving frame (3) being provided with a branch; a servo motor (301) fixedly connected to the base (1), the output shaft of the servo motor (301) being connected to the moving frame (301) The rotating shaft of the movable frame (3) is fixed; a semi-ring plate (302) is fixedly connected to a branch of the movable frame (3); a fixing piece is arranged on the branch of the movable frame (3), and the fixing piece is used to fix the fire extinguisher cylinder on the semi-ring plate (302); a limit frame (401) is rotatably connected to a bracket B (102); a reset torsion spring A (402) is fixedly connected between the bracket B (102) and the limit frame (401), and the reset torsion spring A (402) acts to make the limit frame (401) surround and limit the fire extinguisher cylinder; a contact wheel (4) connected to the limit frame (401) is rotatably connected, and the contact wheel (4) can contact the fire extinguisher cylinder; a hub motor (403) is fixedly connected to the limit frame (401), and the hub motor (403) is fixed to one of the contact wheels (4) to control the rotation of the contact wheel (4).

2. A cylinder water pressure testing device for fire extinguisher production according to claim 1, characterized in that: The movable frame (3) is provided with at least three branches, and each branch of the movable frame (3) is centrally symmetrical with its rotation midpoint as the center; the number of branches of the movable frame (3) is N, and when the servo motor (301) controls the movable frame (3) to rotate, the movable frame (3) is controlled to stop once every time the movable frame (3) rotates 360 / N degrees, so that the movable frame (3) is rotated a complete circle, and all the branches of the movable frame (3) return to their original positions.

3. A cylinder water pressure testing device for fire extinguisher production according to claim 2, characterized in that: The fixing member comprises: a connecting rod (305) fixedly connected to a branch of the moving frame (3); an electromagnet (304) slidably connected to the connecting rod (305), the electromagnet (304) being able to contact a fire extinguisher cylinder placed on a semi-ring plate (302), the electromagnet (304) being magnetic when powered on and being able to be magnetically attracted to the fire extinguisher cylinder, and the electromagnet (304) being demagnetized when powered off; and a return spring A (306) fixedly connected between the electromagnet (304) and the connecting rod (305).

4. A cylinder water pressure testing device for fire extinguisher production according to claim 3, characterized in that: Also includes: A fixing ring (404) fixedly connected to the outside of the water pump (2); A connecting rod assembly A (405) is rotatably connected between the fixing ring (404) and the limiting frame (401).

5. A cylinder water pressure testing device for fire extinguisher production according to claim 4, characterized in that: Also includes: A grinding block (303) is fixedly connected to the semi-annular plate (302).

6. A cylinder water pressure testing device for fire extinguisher production according to claim 5, characterized in that: Also includes: A bracket C (501) is fixedly connected to the rear side of the base (1); a discharge plate (5) connected to the bracket C (501) is rotatably connected, the discharge plate (5) is tilted backward and downward, and the branch of the movable frame (3) can separate the discharge plate (5) and pass through the discharge plate (5); a connecting rod group B (502) is rotatably connected between the discharge plate (5) and the bracket C (501) for improving the stability of the discharge plate (5); and a return torsion spring B (503) is fixedly connected between the connecting rod group B (502) and the discharge plate (5).

7. A cylinder water pressure testing device for fire extinguisher production according to claim 6, characterized in that: The base (1) is provided with a guide groove (604) for guiding water, the guide groove (604) being located at the rear side of the discharge plate (5), and further comprising: a water filter tray (6) fixedly connected to the base (1); a guide rod (601) fixedly connected to the water filter tray (6); a support ring (602) slidably connected to the guide rod (601); and a return spring B (603) fixedly connected between the guide rod (601) and the support ring (602).

8. The cylinder water pressure testing device for fire extinguisher production according to claim 7, further comprising: An air pump (7) fixedly connected to the base (1), the air pump (7) being located directly below the support ring (602); A sealing cap (701) which is rotatably connected to the nozzle of the air pump (7) and is capable of automatically closing the nozzle of the air pump (7).

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