Novel vibration reduction test bench

Abstract

A novel vibration reduction test bench comprises a rack, a diaphragm pump, a vibration reduction structure and a connecting structure. The rack comprises a fixed frame and an equipment plane. The damping structure comprises an air damper, a mounting plane and a damping cushion block. The connecting structure comprises a pipeline support, a connecting pipeline and a spherical connector. The connecting pipeline comprises a liquid inlet pipe and a liquid outlet pipe. Compared with the prior art, through the arrangement of the air damper and the damping cushion block, double-layer isolation is carried out on the tested diaphragm pump, the working environment of the diaphragm pump is guaranteed, and vibration energy is effectively absorbed, absorbed and isolated at the same time. By arranging the spherical connector, the diaphragm pump has certain strength and deformability while the connecting pipeline is fixed, not only can the installation error be eliminated, but also part of energy generated by vibration can be absorbed, so that the normal operation of the diaphragm pump is ensured, and meanwhile, the influence on the connecting pipeline due to relatively strong vibration during performance testing is reduced.

Description

Technical Field

[0001] The utility model relates to the field of diaphragm pump testing, in particular to a novel vibration reduction test bench. Background Art

[0002] Diaphragm pumps, also known as control pumps, are a primary type of actuator. They utilize power to change fluid flow by receiving control signals from a control unit. They are a new type of conveying mechanism capable of transporting a variety of corrosive liquids, liquids containing particles, and high-viscosity, volatile, flammable, and highly toxic liquids. Diaphragm pumps are further categorized as pneumatic, electric, and hydraulic diaphragm pumps. Pneumatic diaphragm pumps are positive displacement pumps powered by compressed gas, creating volume changes through the reciprocating deformation of a diaphragm. They rely on the interaction of a double-directional reversal valve and an auxiliary rod, or a single-directional reversal valve and a connecting rod sliding sleeve, to drive the back-and-forth movement of the elastic diaphragm, causing alternating expansion and contraction of the two chambers, ultimately achieving continuous intake and discharge of liquid.

[0003] For example, a multi-outlet diversion pneumatic diaphragm pump disclosed in a Chinese utility model patent with an authorization announcement date of 2020.12.29 and an authorization announcement number of CN212250416U includes a pneumatic diaphragm pump main pipeline, the pneumatic diaphragm pump main pipeline is a circular frame structure, and ball check valves are diagonally distributed on the four sides of the inside of the pneumatic diaphragm pump main pipeline, an air distribution valve is installed above the middle of the pneumatic diaphragm pump main pipeline, and a diaphragm diaphragm chamber is connected below the air distribution valve, and the diaphragm diaphragm chamber is distributed in the middle of both sides of the pneumatic diaphragm pump main pipeline, the middle of the top of the pneumatic diaphragm pump main pipeline is connected to a material conveying inlet, and the front side of the middle of the lower part of the pneumatic diaphragm pump main pipeline is connected to a material conveying outlet, the top and side of the lower point of the pneumatic diaphragm pump main pipeline are connected to material auxiliary outlets, and the height of the material auxiliary outlet on the side of the pneumatic diaphragm pump main pipeline is lower than the bottom height of the ball check valve.

[0004] After the diaphragm pump is assembled, the product needs to be tested. During the diaphragm pump test, the diaphragm pump will vibrate, especially during performance testing, which will produce relatively strong vibrations. When testing on a conventional equipment platform, on the one hand, the vibration noise of the test system is relatively large, which has a noise impact on the test site and testers. A separate test site needs to be set up to avoid affecting normal production and operations; on the other hand, strong vibrations are directly transmitted to the ground and the test system, which will affect the test accuracy. Summary of the Invention

[0005] In view of this, the present invention provides a novel vibration reduction test bench to solve the above technical problems.

[0006] A novel vibration damping test bench comprises a frame, a diaphragm pump mounted on the frame, a vibration damping structure mounted on the frame, and a connecting structure mounted on one side of the frame. The frame comprises a fixed frame and an equipment surface mounted on the fixed frame. The vibration damping structure comprises multiple air dampers mounted at the bottom of the fixed frame, multiple mounting surfaces spaced apart on the equipment surface, and multiple vibration damping pads positioned between the equipment surface and the mounting surface. The air dampers are positioned between the fixed frame and the ground. The mounting surface is a rectangular plate-shaped structure parallel to and spaced apart from the equipment surface. The connecting structure comprises a pipe bracket mounted on one side of the fixed frame, a connecting pipe connected to the diaphragm pump, and multiple ball connectors mounted on the connecting pipe. The connecting pipe comprises an inlet pipe connected to the liquid inlet of the diaphragm pump and an outlet pipe connected to the liquid outlet of the diaphragm pump. Both the inlet and outlet pipes are rigid pipes flange-connected to the diaphragm pump.

[0007] Furthermore, the equipment plane is arranged on the fixed frame and is a plane parallel to the ground.

[0008] Furthermore, eight air dampers are provided in a rectangular array of two rows and four columns between the fixed frame and the ground, and the spacing between each column is the same.

[0009] Furthermore, two installation planes are provided and are symmetrically arranged on the equipment plane.

[0010] Furthermore, a total of 8 vibration-damping pads are provided, with 4 pads forming a group on each of the mounting planes, and arranged in a rectangular array at the four corners of the mounting plane.

[0011] Furthermore, the pipeline support is a supporting structure fixed on the ground, constructed using angle steel or aluminum profiles, and is a columnar structure arranged perpendicular to the ground, and is provided with two supporting rods perpendicular to the main body.

[0012] Furthermore, two of the spherical connectors are respectively provided on the liquid inlet pipe and the liquid outlet pipe, connected by flanges, and located between the connecting pipeline and the diaphragm pump.

[0013] Compared with the prior art, the novel vibration reduction test bench provided by the present invention provides a double-layer isolation of the diaphragm pump under test by providing the air damper and the vibration-damping pad, thereby ensuring the working environment of the diaphragm pump while effectively absorbing, absorbing, and isolating vibration energy. The use of relatively mature vibration reduction equipment on the market has a simple structure, good noise reduction effect, and low cost, and can be used to conduct vibration tests in conventional production sites without causing noise impact on production and operations. Furthermore, by providing the spherical connector, while fixing the connecting pipeline, it has a certain strength and deformation capacity, which can eliminate installation errors and absorb part of the energy generated by vibration. Thus, while ensuring the normal operation of the diaphragm pump, it reduces the impact of strong vibration on the connecting pipeline during performance testing, thereby ensuring the accuracy of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The present invention provides a structural diagram of a novel vibration reduction test bench. DETAILED DESCRIPTION

[0015] The following is a further detailed description of specific embodiments of the present invention. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the scope of protection of the present invention.

[0016] like Figure 1 , which is a schematic diagram of the structure of the novel vibration reduction test bench provided by the present invention. The novel vibration reduction test bench includes a frame 10, a diaphragm pump 20 mounted on the frame 10, a vibration reduction structure 30 mounted on the frame 10, and a connecting structure 40 mounted on one side of the frame 10. It is conceivable that the novel vibration reduction test bench also includes other functional modules such as connecting circuits, an air supply pump, and so on. These are well known to those skilled in the art and will not be detailed here.

[0017] The rack 10 includes a fixed frame 11 and an equipment plane 12 arranged on the fixed frame 11, and includes multiple other components, including but not limited to operating buttons, digital displays, and locks, etc., which are all common technologies used in industrial production equipment and are therefore not listed one by one in the specification and the drawings.

[0018] The fixed frame 11 can be a frame structure constructed using aluminum profiles and fasteners, and is placed on the bottom surface of the test area to support and stabilize the main body. The equipment plane 12 is provided on the fixed frame 11 and is a plane parallel to the ground for placing and testing the diaphragm pump 20.

[0019] The diaphragm pump 20 is a pneumatic diaphragm pump, which is an existing technology. For example, the working principle of the pneumatic diaphragm pump is mentioned in the pneumatic diaphragm pump air valve chamber and pneumatic diaphragm pump in Chinese invention CN202211014241.2, so only a brief description is given here.

[0020] The vibration damping structure 30 includes a plurality of air dampers 31 arranged at the bottom of the fixed frame 11 , a plurality of mounting planes 32 spaced apart on the equipment plane 12 , and a plurality of vibration damping pads 33 arranged between the equipment plane 12 and the mounting planes 32 .

[0021] The air damper 31 is disposed between the fixed frame 11 and the ground. It is a cord-reinforced rubber bladder filled with compressed air. It utilizes the compressibility of the gas to act as a spring. Compared to metal springs, it has advantages such as low mass, good comfort, fatigue resistance, and long service life. It also has vibration reduction and noise reduction functions and is widely used in various machines such as automobiles, trains, and punching machines. As detailed in the utility model "An Air Spring Shock Absorber" with publication number CN203272572U, only a brief description of its function is provided here. In this embodiment, eight air dampers 31 are provided in a rectangular array of two rows and four columns between the fixed frame 11 and the ground, with the same spacing between each column to achieve a more stable connection structure. Each air damper 31 evenly shares the vibration transmitted from the fixed frame 11.

[0022] The mounting surface 32 is a rectangular plate-like structure, such as a steel plate, parallel to and spaced apart from the equipment surface 12. It is used to mount and secure the diaphragm pump 20. The securing mechanism may be fasteners or a fixture, without limitation. In this embodiment, two mounting surfaces 32 are provided, symmetrically arranged on the equipment surface 12, allowing two diaphragm pumps 20 to be tested simultaneously.

[0023] The vibration-damping pads 33 are positioned between the equipment plane 12 and the mounting plane 32 and are rubber shock-absorbing pads characterized by both high elasticity and high viscosity. The elasticity of rubber is generated by changes in its curled molecular conformation. Interactions between rubber molecules hinder the motion of the molecular chains, resulting in viscous damping, which often results in an imbalance between stress and strain. This technology is widely used in industrial production and other fields and should be well known to those skilled in the art. Therefore, a brief description of its function is provided here. In this embodiment, a total of eight vibration-damping pads 33 are provided, with groups of four placed on each mounting plane 32. These pads are arranged in a rectangular array at the four corners of the mounting plane 32 to evenly distribute force and reduce vibration and noise generated during testing of the diaphragm pump 20 placed on the mounting plane 32.

[0024] The connection structure 40 includes a pipeline bracket 41 provided on one side of the fixed frame 11 , a connecting pipeline 42 connected to the diaphragm pump 20 , and a plurality of ball connectors 43 provided on the connecting pipeline 42 .

[0025] It should be noted that, as in the present embodiment, two test stations are provided for placing the diaphragm pump 20. Accordingly, one side of each mounting plane 32 should be provided with a connecting structure 40 to correspond to each diaphragm pump 20 that needs to be tested. In the drawings of the specification of the present application, only the connecting structure 40 on one side is marked for a clearer illustration.

[0026] The pipeline bracket 41 is a supporting structure fixed on the ground, which can be built using angle steel or aluminum profiles. It is a columnar structure set perpendicular to the ground and has two support rods perpendicular to the main body for setting up the connecting pipeline 42.

[0027] The connecting pipeline 42 includes an inlet pipe 421 connected to the liquid inlet of the diaphragm pump 20, and a liquid outlet pipe 422 connected to the liquid outlet of the diaphragm pump 20. The inlet pipe 421 and the liquid outlet pipe 422 are both hard pipes flange-connected to the diaphragm pump 20 for transmitting liquid.

[0028] The spherical connector 43 is a double-ball rubber joint, a type of joint composed of rubber tubing. It reduces vibration and noise, and compensates for thermal expansion and contraction caused by temperature fluctuations. Widely used in various piping systems, it is a highly elastic, airtight, and media- and weather-resistant pipe joint. This is a prior art widely used in piping systems and other fields, and should be well known to those skilled in the art. Therefore, its function is briefly described here. In this embodiment, two spherical connectors 43 are provided on each of the liquid inlet pipe 421 and the liquid outlet pipe 422, respectively. These connectors are flange-connected and located between the connecting pipe 42 and the diaphragm pump 20. Their strong deformability helps eliminate installation errors and prevent interference. Furthermore, during vibration testing, they absorb vibrations, preventing them from being transmitted to the entire piping system and affecting liquid delivery.

[0029] Compared with the prior art, the novel vibration reduction test bench provided by the present invention provides a double-layer isolation of the diaphragm pump 20 under test by providing the air damper 31 and the vibration reduction pad 33, thereby ensuring the working environment of the diaphragm pump 20 while effectively absorbing, absorbing, and isolating vibration energy. The use of relatively mature vibration reduction equipment on the market has a simple structure, good noise reduction effect, and low cost, and can be used to conduct vibration tests in conventional production sites without causing noise impact on production and operations. Furthermore, by providing the spherical connector 43, while fixing the connecting pipeline, it has a certain strength and deformation capacity, which can not only eliminate installation errors but also absorb part of the energy generated by vibration. Thus, while ensuring the normal operation of the diaphragm pump 20, it reduces the impact of strong vibration on the connecting pipeline 42 during performance testing, thereby ensuring the accuracy of the test.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements or improvements within the spirit of the present invention are included in the scope of the claims of the present invention.

Claims

1. A new vibration reduction test bench, characterized by: The novel vibration reduction test bench includes a frame, a diaphragm pump arranged on the frame, a vibration reduction structure arranged on the frame, and a connecting structure arranged on one side of the frame. The frame includes a fixed frame and an equipment plane arranged on the fixed frame. The vibration reduction structure includes a plurality of air vibration dampers arranged at the bottom of the fixed frame, a plurality of mounting planes arranged at intervals on the equipment plane, and a plurality of vibration reduction pads arranged between the equipment plane and the mounting plane. The air vibration dampers are arranged between the fixed frame and the ground. The mounting plane is a rectangular plate-shaped structure parallel to the equipment plane and arranged at intervals. The connecting structure includes a pipeline bracket arranged on one side of the fixed frame, a connecting pipeline connected to the diaphragm pump, and a plurality of spherical connectors arranged on the connecting pipeline. The connecting pipeline includes an inlet pipe connected to the liquid inlet of the diaphragm pump, and an outlet pipe connected to the liquid outlet of the diaphragm pump. The inlet pipe and the outlet pipe are both hard pipes flange-connected to the diaphragm pump.

2. The novel vibration reduction test bench according to claim 1, characterized in that: The equipment plane is arranged on the fixed frame and is a plane parallel to the ground.

3. The novel vibration reduction test bench according to claim 1, characterized in that: Eight air dampers are provided in a rectangular array of 2 rows and 4 columns between the fixed frame and the ground, and the spacing between each column is the same.

4. The novel vibration reduction test bench according to claim 1, characterized in that: Two installation planes are provided and are symmetrically arranged on the equipment plane.

5. The novel vibration reduction test bench according to claim 4, characterized in that: A total of 8 vibration-damping pads are provided, with each 4 pads forming a group and arranged on each of the mounting planes in a rectangular array at the four corners of the mounting plane.

6. The novel vibration reduction test bench according to claim 1, characterized in that: The pipe bracket is a supporting structure fixed on the ground, built with angle steel or aluminum profiles, and is a columnar structure set perpendicular to the ground, and is provided with two supporting rods perpendicular to the main body.

7. The novel vibration reduction test bench according to claim 1, characterized in that: The liquid inlet pipe and the liquid outlet pipe are respectively provided with two spherical connectors, which are connected by flanges and are located between the connecting pipeline and the diaphragm pump.

Images