Flooding-proof mute pump cylinder air tightness test equipment

Abstract

The utility model discloses a flood-proof mute pump cylinder air tightness test device comprising a test cabinet, the lower part of which is provided with a distribution box; the sealing mechanism comprises an air cylinder, an upper sealing gasket and a lower sealing gasket, the air cylinder is installed at the top of the test cabinet, the upper sealing gasket is fixed to the tail end of a piston rod of the air cylinder, the lower sealing gasket is installed at the top of the distribution box, and an air source connecting pipe is arranged in the middle of the lower sealing gasket in a penetrating mode; a pressure sensor; the air cylinder drives the upper sealing gasket to press downwards, the top end and the bottom end of the pump cylinder are sealed by the upper sealing gasket and the lower sealing gasket, the air source connecting pipe inflates air into the pump cylinder, the air inflation is stopped after the air pressure in the pump cylinder reaches a set value, and the pressure sensor detects the change of the air pressure in the pump cylinder, so that the accurate test of the air tightness of the pump cylinder is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of air tightness detection, in particular to an air tightness testing device for a flood-proof silent pump barrel. Background Art

[0002] Among the silent complete sets of equipment in the secondary water supply industry, the silent water pump has the characteristics of quick-disassembly four-section and modular design. The four-section structure includes the water inlet section, motor section, water pump section and water outlet section, of which the water inlet section and water outlet section are fixed modular universal parts. The pump barrel heights of the motor section and water pump section of different models of water pumps vary, and the types are diverse.

[0003] Due to the inherent properties of the water pump, from the perspective of its basic function, the entire water flow channel must be sealed and there must be no leakage. In the entire silent water pump product, the pump barrel is welded by flanges at both ends and a steel pipe in the middle. The processing of the pump barrel is the main cause of water seepage; therefore, we need to design an airtightness detection device for the pump barrel itself.

[0004] A Chinese invention patent with publication number CN109406061A discloses an adjustable test platform for detecting the air tightness of a water pump casing, comprising a test water tank, a base and a pump casing fixed mesh cover, motors are installed on both side outer walls of the test water tank, a lifting platform is installed on the top of the base through a supporting spring, a mounting plate is installed on the top of the lifting platform, the test water tank is installed above the mounting plate through a connecting shaft, an electric push rod is installed inside the lifting platform, a movable rod installed at the output end of the electric push rod is fixedly connected to the lower surface of the lifting platform, soap liquid storage boxes are installed on both side inner walls of the test water tank, and the pump casing fixed mesh cover is installed on the bottom inner wall of the test water tank through a positioning ring installed on its outer wall.

[0005] This airtightness testing method has the problem of low testing accuracy. Utility Model Content

[0006] The utility model aims to provide a flood-proof silent pump barrel air tightness testing device in view of the problems existing in the prior art.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A flood-proof silent pump barrel air tightness test device, comprising:

[0009] A test cabinet, wherein a distribution box is provided at the bottom of the test cabinet for installing equipment lines, and a test window is provided on the upper side of the test cabinet, through which the pump barrel is placed into the test cabinet for testing;

[0010] The sealing mechanism comprises a cylinder, an upper sealing gasket and a lower sealing gasket, wherein the cylinder is installed on the top of the test cabinet, a pressure plate is fixed at the end of the piston rod of the cylinder, the upper sealing gasket is provided on the bottom surface of the pressure plate, the lower sealing gasket is installed on the top of the distribution box, the upper sealing gasket is located directly above the lower sealing gasket, an air source pipe is penetrated through the middle of the lower sealing gasket, one end of the air source pipe penetrates the top surface of the distribution box and is connected to an external air source, the provided cylinder is used to drive the pressure plate and the upper sealing gasket to move up and down, the provided upper sealing gasket and the lower sealing gasket are used for sealing the upper and lower ends of the pump barrel, the provided pressure plate is used to cover the top end of the pump barrel, and can form a seal on the top end of the pump barrel in cooperation with the upper sealing gasket, and the provided air source pipe is used to inflate the pump barrel;

[0011] A pressure sensor is installed in the air source connecting pipe and is used to detect the air pressure in the pump barrel.

[0012] The utility model uses an arranged air cylinder to drive the pressure plate and the upper sealing gasket to press downward, so that the top and bottom ends of the pump barrel are sealed by the upper sealing gasket and the lower sealing gasket to form an enclosed space, and air is inflated into the pump barrel through an arranged air source pipe. After the air pressure in the pump barrel reaches a set value, the inflation is stopped, and the air pressure change in the pump barrel over a period of time is detected by an arranged pressure sensor, thereby realizing accurate testing of the air tightness of the pump barrel.

[0013] Furthermore, a fixing seat is provided on the top surface of the distribution box, the lower sealing gasket is fixed to the top surface of the fixing seat, the air source pipe is passed through the fixing seat, and the fixing seat is used to install the lower sealing gasket and fix the pump barrel.

[0014] Furthermore, a plurality of positioning guide columns are provided on the outer periphery of the fixing seat along the length direction of the cylinder, one end of the positioning guide column is fixed to the top surface of the distribution box, and the other end passes through the pressure plate and is fixed to the top surface of the test cabinet. The provided positioning guide columns are used to guide the downward pressing direction of the pressure plate, which can improve the stability of the pressure plate when it is pressed down, and the pressure plate is not easy to shake, which can protect the cylinder and increase the service life of the cylinder. The downward pressing position of the upper sealing gasket is more precise, and the downward pressure is more uniform. After the pump barrel is pressed, it is more firmly fixed and not easy to leak.

[0015] Furthermore, an upper guide block is provided on the bottom surface of the upper sealing gasket, a lower guide block is provided on the top surface of the lower sealing gasket, and the air source pipe is passed through the lower guide block. The upper guide block and the lower guide block are provided to facilitate the installation and fixing of the pump barrel.

[0016] Furthermore, protective grating rulers are provided on both sides of the test window. The protective grating rulers are used to detect foreign objects entering the test cabinet through the test window, thereby protecting the safety of equipment and personnel.

[0017] Furthermore, two stroke sensing modules distributed up and down are provided in the test cabinet, and the stroke sensing modules are located above the distribution box. The stroke sensing modules are used to detect the stroke of the air pump, and the two stroke sensing modules cooperate to limit the maximum stroke and minimum stroke of the air pump.

[0018] Furthermore, a two-handed start button for starting the cylinder is provided on the outer wall of the test cabinet, so as to protect both hands when starting the cylinder.

[0019] Furthermore, an emergency stop button for stopping the operation of the cylinder in an emergency is provided on the outer wall of the test cabinet.

[0020] Furthermore, a control box is provided on the outer wall of the test cabinet, and a touch display screen, control buttons and prompt lights are provided on the side of the control box. The touch display screen is used to display various information, the control buttons are used to control the equipment, and the prompt lights are used to indicate whether the air tightness is qualified or unqualified.

[0021] Furthermore, a working indicator light is provided on the top of the control box to indicate whether the equipment is working normally.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] (1) The utility model uses a set air cylinder to drive the pressure plate and the upper sealing gasket to press downward, so that the top and bottom ends of the pump barrel are sealed by the upper sealing gasket and the lower sealing gasket to form a closed space. The pump barrel is inflated through the set air source pipe. After the air pressure in the pump barrel reaches the set value, the inflation is stopped. The air pressure change in the pump barrel over a period of time is detected by the set pressure sensor, thereby realizing accurate testing of the air tightness of the pump barrel.

[0024] (2) The utility model detects air tightness by inflating air into the pump barrel, which has high detection efficiency and is cleaner and more hygienic. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of a flood-proof silent pump barrel air tightness test device of the utility model;

[0026] Figure 2 This is a front view of the test cabinet in this embodiment;

[0027] Figure 3 This is a diagram showing the relationship between the gas source connection positions in this embodiment;

[0028] In the figure: 1. Test cabinet; 2. Distribution box; 3. Test window; 4. Cylinder; 5. Upper sealing gasket; 6. Lower sealing gasket; 7. Pressure plate; 8. Air supply pipe; 9. Fixed seat; 10. Positioning guide column; 11. Upper guide block; 12. Lower guide block; 13. Protective grating ruler; 14. Travel sensing module; 15. Two-hand start button; 16. Emergency stop button; 17. Control box; 18. Touch screen; 19. Control button; 20. Prompt light; 21. Working indicator light; 22. Pump barrel. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] like Figure 1-3 As shown, this embodiment provides a flood-proof silent pump barrel air tightness testing device, comprising:

[0031] A test cabinet 1, wherein a distribution box 2 is provided at the lower part of the test cabinet 1 for installing equipment lines, and a test window 3 is provided at the upper side of the test cabinet 1, through which a pump barrel 22 is placed into the test cabinet 1 for testing;

[0032] A sealing mechanism, comprising a cylinder 4, an upper sealing gasket 5 and a lower sealing gasket 6, wherein the cylinder 4 is mounted on the top of the test cabinet 1, a pressure plate 7 is fixed to the end of the piston rod of the cylinder 4, the bottom surface of the pressure plate 7 is provided with the upper sealing gasket 5, the lower sealing gasket 6 is mounted on the top of the distribution box 2, the upper sealing gasket 5 is located directly above the lower sealing gasket 6, an air source pipe 8 is penetrated in the middle of the lower sealing gasket 6, one end of the air source pipe 8 penetrates the top surface of the distribution box 2 and is connected with an external air source, the cylinder 4 is used to drive the pressure plate 7 and the upper sealing gasket 5 to move up and down, the upper sealing gasket 5 and the lower sealing gasket 6 are used for sealing the upper and lower ends of the pump barrel 22, the pressure plate 7 is used to cover the top end of the pump barrel 22, and can form a seal on the top end of the pump barrel 22 in cooperation with the upper sealing gasket 5, and the air source pipe 8 is used to inflate the pump barrel 22;

[0033] A pressure sensor is installed in the air source connecting pipe 8 and is used to detect the air pressure in the pump barrel 22 .

[0034] The utility model drives the pressure plate 7 and the upper sealing gasket 5 to press downward through the provided cylinder 4, so that the top and bottom ends of the pump barrel 22 are sealed by the upper sealing gasket 5 and the lower sealing gasket 6 to form an enclosed space, and inflates the pump barrel 22 through the provided air source connecting pipe 8. After the air pressure in the pump barrel 22 reaches the set value, the inflation is stopped, and the air pressure change in the pump barrel 22 over a period of time is detected by the provided pressure sensor, thereby realizing accurate testing of the air tightness of the pump barrel 22.

[0035] Furthermore, a fixing seat 9 is provided on the top surface of the distribution box 2, the lower sealing gasket 6 is fixed on the top surface of the fixing seat 9, the air source connecting pipe 8 is passed through the fixing seat 9, and the fixing seat 9 is used to install the lower sealing gasket 6 and fix the pump barrel 22.

[0036] Furthermore, four positioning guide columns 10 are provided on the outer periphery of the fixing seat 9 along the length direction of the cylinder 4, one end of the positioning guide column 10 is fixed to the top surface of the distribution box 2, and the other end passes through the four corners of the pressure plate 7 and is fixed to the top surface of the test cabinet 1. The positioning guide columns 10 are used to guide the downward pressing direction of the pressure plate 7, which can improve the stability of the pressure plate 7 when it is pressed down, and the pressure plate 7 is not easy to shake, which can protect the cylinder 4 and increase the service life of the cylinder 4. The downward pressing position of the upper sealing gasket 5 is more accurate, and the downward pressure is more uniform. After the pump barrel 22 is pressed, it is more firmly fixed and not easy to leak.

[0037] Furthermore, an upper guide block 11 is provided on the bottom surface of the upper sealing gasket 5, a lower guide block 12 is provided on the top surface of the lower sealing gasket 6, and the air source pipe 8 is passed through the lower guide block 12. The upper guide block 11 and the lower guide block 12 are provided to facilitate the installation and fixing of the pump barrel 22;

[0038] The upper guide block 11 is in the shape of an inverted truncated cone, and the lower guide block 12 is in the shape of a truncated cone. The lower guide block 12 facilitates placing the pump barrel 22 on the lower sealing gasket 6 and is not easy to fall over. The top of the upper guide block 11 is passed through and fixed to the upper sealing gasket 5 and the pressure plate 7. When the pressure plate 7 is pressed down, even if the pump barrel 22 is not completely straightened, the upper guide block 11 can be pressed into the pump barrel 22 first, thereby guiding the pump barrel 22 to continuously adjust to a suitable position during the process of the pressure plate 7 being pressed down.

[0039] Furthermore, protective grating rulers 13 are provided on both sides of the test window 3. The protective grating rulers 13 are used to detect foreign objects entering the test cabinet 1 from the test window 3. After the air pump is started, if foreign objects enter the test cabinet 1 from the test window 3, an emergency shutdown can be performed to protect the safety of equipment and personnel.

[0040] Furthermore, two stroke sensing modules 14 distributed up and down are provided in the test cabinet 1, and the stroke sensing module 14 is located above the distribution box 2. The stroke sensing module 14 is used to detect the stroke of the air pump. The two stroke sensing modules 14 cooperate to limit the maximum stroke and minimum stroke of the air pump.

[0041] Furthermore, the travel sensing module 14 is a proximity switch.

[0042] Furthermore, a two-handed start button 15 for starting the gas cylinder 4 is provided on the outer wall of the test cabinet 1 , so as to protect both hands when starting the gas cylinder 4 .

[0043] Furthermore, an emergency stop button 16 for stopping the operation of the cylinder 4 in an emergency is provided on the outer wall of the test cabinet 1 .

[0044] Furthermore, a control box 17 is provided on the outer wall of the test cabinet 1, and a touch screen 18, a control button 19 and a prompt light 20 are provided on the side of the control box 17. The touch screen 18 is used to display various information, the control button 19 is used for equipment control, and the prompt light 20 is used to indicate whether the air tightness is qualified or unqualified.

[0045] Furthermore, a working indicator light 21 is provided on the top of the control box 17 to indicate whether the device is working normally.

[0046] Furthermore, a solenoid valve is provided in the gas source connecting pipe 8 for controlling the connection between the gas source connecting pipe 8 and an external gas source.

[0047] Furthermore, a control module is provided in the control box 17, and the control module is electrically connected to the cylinder 4, the solenoid valve, the pressure sensor, the protective grating ruler 13, the stroke sensing module 14, the two-hand start button 15, the emergency stop button 16, the touch display screen 18, the control button 19, the warning light 20 and the working indicator light 21.

[0048] Working principle: align the bottom end of the pump barrel 22 with the lower guide block 12, place it on the lower sealing gasket 6, press the two-hand start button 15 with both hands, the air pump drives the pressure plate 7 and the upper sealing gasket 5 to press down, and the top and bottom ends of the pump barrel 22 are sealed by the upper sealing gasket 5 and the lower sealing gasket 6 to form an enclosed space. The air source pipe 8 is used to inflate the pump barrel 22. After the air pressure in the pump barrel 22 reaches the set value, the inflation is stopped. The pressure sensor detects the air pressure changes in the pump barrel 22 over a period of time to realize the air tightness test of the pump barrel 22.

Claims

1. A flood-proof silent pump barrel air tightness test equipment, characterized in that: include: A test cabinet, wherein a distribution box is provided at the lower part of the test cabinet, and a test window is provided at the upper side of the test cabinet; The sealing mechanism comprises a cylinder, an upper sealing gasket and a lower sealing gasket, wherein the cylinder is installed on the top of the test cabinet, a pressure plate is fixed to the end of the piston rod of the cylinder, the upper sealing gasket is provided on the bottom surface of the pressure plate, the lower sealing gasket is installed on the top of the distribution box, the upper sealing gasket is located directly above the lower sealing gasket, an air source pipe is penetrated in the middle of the lower sealing gasket, one end of the air source pipe penetrates the top surface of the distribution box and is connected to an external air source; A pressure sensor is installed in the air source connecting pipe and is used to detect the air pressure in the pump barrel.

2. The anti-flooding silent pump barrel air tightness test equipment according to claim 1, characterized in that: A fixing seat is provided on the top surface of the distribution box, the lower sealing gasket is fixed on the top surface of the fixing seat, and the gas source pipe is passed through the fixing seat.

3. The anti-flooding silent pump barrel air tightness test equipment according to claim 2, characterized in that: A plurality of positioning guide columns are arranged on the outer periphery of the fixing seat along the length direction of the cylinder, one end of the positioning guide column is fixed to the top surface of the distribution box, and the other end passes through the pressing plate and is fixed to the top surface of the test cabinet.

4. The anti-flooding silent pump barrel air tightness testing equipment according to claim 1, characterized in that: An upper guide block is disposed on the bottom surface of the upper sealing gasket, a lower guide block is disposed on the top surface of the lower sealing gasket, and the air source pipe is passed through the lower guide block.

5. The anti-flooding silent pump barrel air tightness testing equipment according to claim 1, characterized in that: Protective grating rulers are arranged on both sides of the test window.

6. The anti-flooding silent pump barrel air tightness testing equipment according to claim 1, characterized in that: The test cabinet is provided with two stroke sensing modules distributed up and down, and the stroke sensing modules are located above the distribution box.

7. The anti-flooding silent pump barrel air tightness testing equipment according to claim 1, characterized in that: The outer wall of the test cabinet is provided with a two-hand starting button for starting the cylinder.

8. The anti-flooding silent pump barrel air tightness testing equipment according to claim 1, characterized in that: An emergency stop button for stopping the operation of the cylinder is arranged on the outer wall of the test cabinet.

9. The anti-flooding silent pump barrel air tightness testing equipment according to claim 1, characterized in that: A control box is arranged on the outer wall of the test cabinet, and a touch display screen, control buttons and a prompt light are arranged on the side of the control box.

10. The anti-flooding silent pump barrel air tightness testing equipment according to claim 9, characterized in that: A working indicator light is arranged on the top of the control box.

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