Special pneumatic experiment device for step-by-step direct-acting valve

Abstract

The utility model relates to the field of coal ash conveying equipment, in particular to a pneumatic experiment device special for a step-by-step direct-acting valve, which comprises a machine body, a detection pool is arranged in the machine body, detection liquid is filled in the detection pool, a rectangular detection frame is arranged in the detection pool, and the detection frame is divided into two parts from the midpoint of the edge in the width direction. An n-shaped inflation frame and an n-shaped clamping frame are formed, an opening of the inflation frame is opposite to an opening of the clamping frame, an inflation channel is formed in the inflation frame, inflation pipes are fixedly connected to the side face, facing the clamping frame, of the inflation frame, the inflation pipes are perpendicular to the side face of the inflation frame, the multiple inflation pipes are arranged, and the multiple inflation pipes are arranged in a linear array. Each inflation tube is inserted into the inflation frame and communicated with the inflation channel, a sealing plug is fixedly connected to the position, facing the inflation tube, of the clamping frame, an inflation assembly is arranged between the inflation channel and the detection pool, a movement assembly is arranged between the inflation frame and the clamping frame, and the effect of improving the detection efficiency of the multiple step-by-step direct-acting valves is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fly ash conveying equipment, in particular to a pneumatic experimental device dedicated to a step-by-step direct-acting valve. Background Art

[0002] In existing thermal power plants, slag is typically transported through fly ash conveying systems. Fly ash conveying systems are a common type of conveying system. They not only provide a continuous and stable supply of fly ash, ensuring the continued operation of the thermal power plant, but also continuously transport the slag generated by combustion and power generation to the processing workshop. Currently, fly ash conveying systems are becoming a key supporting equipment in thermal power plants.

[0003] Currently, fly ash conveying systems typically consist of a powder silo connected to an ash conveying pipeline, which terminates in a pneumatic conveyor (also known as a step-by-step direct-acting valve) connected to an air source. The pneumatic conveyor, acting as the compressed air input for the fly ash conveying system, is crucial to the overall system.

[0004] The existing referenceable Chinese utility model patent has a publication number of CN210655256U, which discloses a split-type, hole-free pneumatic conveyor, including a conveyor body, in which an air inlet port, an air outlet port and a material connection port are provided. When in use, the air inlet port is connected to the air source, the air outlet port is connected to the ash conveying pipeline, and the material connection port is connected to the powder silo. When in use, the compressed gas provided by the air source enters the machine body through the air inlet port, and then the compressed gas enters the ash conveying pipeline through the air outlet port. When the compressed gas passes through the material connection port, negative pressure is formed, and the powder in the powder silo enters the machine body and is blown into the ash conveying pipeline by the compressed gas.

[0005] The above-mentioned prior art has the following defects:

[0006] After production, the step-by-step direct-acting valves are usually tested for air tightness. When testing the same batch of step-by-step direct-acting valves, workers usually need to test them one by one, which increases the installation and disassembly process and reduces the efficiency of the test. Utility Model Content

[0007] The purpose of the present utility model is to provide a pneumatic test device dedicated to a step-by-step direct-acting valve, so as to improve the detection efficiency of multiple step-by-step direct-acting valves and solve the problems raised in the above-mentioned background technology.

[0008] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0009] A pneumatic test device for a step-by-step direct-acting valve includes a body, a detection pool is provided in the body, the detection pool is filled with a detection liquid, a rectangular detection frame is provided in the detection pool, the detection frame is parallel to the bottom wall of the detection pool, the detection frame is divided into two parts at the midpoint of the width direction, forming an n-shaped inflation frame and an n-shaped clamping frame, the opening of the inflation frame is arranged opposite to the opening of the clamping frame, an inflation channel is provided in the inflation frame, the inflation channel is located in the longer side of the inflation frame, an inflation tube is fixedly connected to the side of the inflation frame facing the clamping frame, and the inflation tube Perpendicular to the side of the inflation frame, there are multiple inflation tubes arranged in a linear array. Each inflation tube is inserted into the inflation frame and connected to the inflation channel. A sealing plug is fixedly connected to the position of the clamping frame facing the inflation tube. The number of sealing plugs is equal to the number of inflation tubes, and the sealing plugs correspond to the inflation tubes one by one. An inflation component is provided between the inflation channel and the detection pool, and the inflation component provides airflow for the inflation channel. A motion component is provided between the inflation frame and the clamping frame, and the motion component allows the clamping frame to move linearly towards or away from the inflation frame.

[0010] As a preferred embodiment of the present invention, a sealing ring is provided at the connection position between each of the inflation tubes and the inflation frame, and the sealing ring is made of rubber material.

[0011] As a preferred embodiment of the present invention, a support assembly is provided between the detection pool and the detection frame, and the support assembly includes an arched support frame, and a lifting cylinder is fixedly connected to the top of the support frame. The lifting cylinder has a telescopic rod, which passes through the support frame and is fixedly connected to the inflation frame.

[0012] As a preferred embodiment of the present invention, the inflation component includes an air pump fixedly connected to the top of the detection pool and a docking tube inserted at the end of the inflation frame. The docking tube is fixedly connected to the inflation channel, and the tube body of the docking tube is fixedly connected to the inflation frame. The air pump is connected to a connecting pipe, which is made of rubber material. The connecting pipe is sleeved on the end of the docking tube away from the inflation channel, and the connecting pipe is connected to the docking tube.

[0013] As a preferred embodiment of the present invention, a sealing sleeve made of silicone material is provided between the connecting pipe and the docking pipe, one end of the sealing sleeve extends to the pipe body of the connecting pipe, and the other end extends to the pipe body of the docking pipe. The sealing sleeve tightly wraps the connection position between the connecting pipe and the docking pipe inside.

[0014] As a preferred embodiment of the present invention, a guide rod is provided between the inflation frame and the clamping frame, one end of the guide rod is fixedly connected to the side of the inflation frame facing the clamping frame, and the other end passes through the clamping frame. There are multiple guide rods, and the ends of the multiple guide rods passing through the clamping frame are commonly fixedly connected to a support plate. Each guide rod is perpendicular to the support plate, and the length of the support plate is equal to the length of the clamping frame.

[0015] As a preferred embodiment of the present invention, the motion component includes a motion rod, which is located at the end of the inflation frame away from the inflation component. The motion rod passes through the inflation frame and the clamping frame and is fixedly connected to the support plate through a bearing. A thread is provided on the motion rod, the inflation frame is not threadedly connected to the motion rod, and the clamping frame is threadedly connected to the motion rod. When the motion rod rotates in the inflation frame, the clamping frame moves linearly along the motion rod, and the end of the motion rod passing through the inflation frame is fixedly connected to a rotating wheel, and the axis of the rotating wheel coincides with the motion rod.

[0016] Beneficial effects

[0017] The beneficial effects of the utility model are:

[0018] When workers conduct air tightness tests on multiple step-by-step direct-acting valves, they first connect the step-by-step direct-acting valves to the inflation tubes connected to the inflation frame. After the multiple inflation tubes in the inflation frame are connected to the step-by-step direct-acting valves, the workers operate the motion assembly to drive the clamping frame toward the inflation frame. When the sealing plug fixedly connected in the clamping frame is inserted into the end of the corresponding step-by-step direct-acting valve away from the inflation frame, the sealing plug seals the step-by-step direct-acting valve, and then the detection frame is sunk into the detection liquid. The air flow output by the inflation assembly flows into each step-by-step direct-acting valve through the inflation channel. Air is filled in the step-by-step direct-acting valve and the internal pressure begins to rise. If the step-by-step direct-acting valve has cracks, continuous bubbles will appear in the detection liquid and rise, thereby achieving the purpose of detection. Through the setting of the detection frame, workers can perform detection of multiple step-by-step direct-acting valves at one time, reducing the workload of workers when detecting multiple step-by-step direct-acting valves, and improving the speed of detecting multiple step-by-step direct-acting valves, thereby achieving the effect of improving the detection efficiency of multiple step-by-step direct-acting valves. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the structure from a top view;

[0022] Figure 3 A cross-sectional view showing the detection frame.

[0023] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0024] 1. Machine body; 11. Detection tank; 12. Detection liquid; 2. Detection frame; 21. Inflation frame; 211. Inflation channel; 212. Inflation tube; 2121. Sealing ring; 22. Clamping frame; 221. Sealing plug; 3. Inflation assembly; 31. Air pump; 32. Docking tube; 33. Connecting tube; 331. Sealing sleeve; 4. Support assembly; 41. Support frame; 42. Lifting cylinder; 43. Telescopic rod; 5. Guide rod; 51. Support plate; 6. Moving assembly; 61. Moving rod; 62. Rotating wheel. DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See Figure 1-3 As shown, a pneumatic test device for a step-by-step direct-acting valve includes a rectangular body 1, a rectangular detection pool 11 is provided in the body 1, the detection pool 11 is filled with a detection liquid 12 made of water, a rectangular detection frame 2 is provided in the detection pool 11, the detection frame 2 is parallel to the bottom wall of the detection pool 11, and the detection frame 2 is divided into two parts at the midpoint of the width direction, forming an n-shaped inflation frame 21 and an n-shaped clamping frame 22, the opening of the inflation frame 21 is arranged opposite to the opening of the clamping frame 22, and an inflation channel 211 is provided in the inflation frame 21, and the inflation channel 211 is located at On the longer side of the inflation frame 21, an inflation tube 212 is fixedly connected to the side of the inflation frame 21 facing the clamping frame 22. The inflation tube 212 is perpendicular to the side of the inflation frame 21. There are multiple inflation tubes 212, and the multiple inflation tubes 212 are arranged in a linear array. Each inflation tube 212 is inserted into the inflation frame 21 and connected to the inflation channel 211. A sealing ring 2121 made of rubber material is provided at the connection position between each inflation tube 212 and the inflation frame 21. The sealing ring 2121 can improve the sealing of the connection between the inflation tube 212 and the inflation frame 21, thereby improving the accuracy of detection. A sealing plug 221 is fixedly connected to the clamping frame 22 at a position facing the inflation tube 212. The number of the sealing plugs 221 is equal to the number of the inflation tubes 212, and the sealing plugs 221 correspond one-to-one to the inflation tubes 212. Through the setting of the detection frame 2, workers can perform inspections of multiple step-by-step direct-acting valves at one time, which reduces the workload of workers when inspecting multiple step-by-step direct-acting valves, improves the speed of inspecting multiple step-by-step direct-acting valves, and achieves the effect of improving the inspection efficiency of multiple step-by-step direct-acting valves.

[0027] A support assembly 4 is arranged between the detection pool 11 and the detection frame 2. The support assembly 4 includes an arched support frame 41. A lifting cylinder 42 is fixedly connected to the top of the support frame 41. The lifting cylinder 42 has a telescopic rod 43. The telescopic rod 43 passes through the support frame 41 and is fixedly connected to the inflatable frame 21. The lifting cylinder 42 can drive the detection frame 2 to rise and fall, thereby replacing the worker's operation of lifting the detection frame 2, thereby improving the convenience of use.

[0028] An inflation component 3 is provided between the inflation channel 211 and the detection pool 11. The inflation component 3 provides airflow for the inflation channel 211. The inflation component 3 includes an air pump 31 fixedly connected to the top of the detection pool 11 and a docking pipe 32 inserted at the end of the inflation frame 21. The docking pipe 32 is fixedly connected to the inflation channel 211, and the body of the docking pipe 32 is fixedly connected to the inflation frame 21. The air pump 31 is connected to a connecting pipe 33. The connecting pipe 33 is made of rubber material. The connecting pipe 33 is sleeved on the end of the docking pipe 32 away from the inflation channel 211, and the connecting pipe 33 is connected to the docking pipe 32. A sealing sleeve 331 made of silicone material is provided between the connecting pipe 33 and the docking pipe 32. One end of the sealing sleeve 331 extends to the body of the connecting pipe 33, and the other end extends to the body of the docking pipe 32. The sealing sleeve 331 wraps the connection position between the connecting pipe 33 and the docking pipe 32 tightly inside. The sealing sleeve 331 can seal and protect the connection position between the connecting pipe 33 and the butt joint pipe 32, thereby preventing air leakage at the connection position between the connecting pipe 33 and the butt joint pipe 32, thereby improving the accuracy of the experiment.

[0029] A guide rod 5 is provided between the inflation frame 21 and the clamping frame 22. One end of the guide rod 5 is fixedly connected to the side of the inflation frame 21 facing the clamping frame 22, and the other end passes through the clamping frame 22. Multiple guide rods 5 are provided, and the ends of the multiple guide rods 5 that pass through the clamping frame 22 are fixedly connected to a support plate 51. Each guide rod 5 is perpendicular to the support plate 51, and the length of the support plate 51 is equal to the length of the clamping frame 22. The guide rods 5 are arranged crosswise with the inflation tube 212. A motion component 6 is provided between the inflatable frame 21 and the clamping frame 22. The motion component 6 includes a motion rod 61. The motion rod 61 is located at the end of the inflatable frame 21 away from the inflatable component 3. The motion rod 61 passes through the inflatable frame 21 and the clamping frame 22 and is fixedly connected to the support plate 51 through a bearing. A thread is provided on the motion rod 61. The inflatable frame 21 is not threadedly connected to the motion rod 61, and the clamping frame 22 is threadedly connected to the motion rod 61. When the motion rod 61 rotates in the inflatable frame 21, the clamping frame 22 moves linearly along the motion rod 61. The motion rod 61 passes through the end of the inflatable frame 21 and is fixedly connected to a rotating wheel 62. The axis of the rotating wheel 62 coincides with the motion rod 61. The rotating wheel 62 is in a position for workers to rotate, so that workers can operate the motion rod 61 through the rotating wheel 62, thereby improving the operational convenience of the motion component 6.

[0030] A specific application of this embodiment is:

[0031] When workers conduct air tightness tests on multiple step-by-step direct-acting valves, they first connect the step-by-step direct-acting valves to the inflation tubes 212 connected in the inflation frame 21. After the multiple inflation tubes 212 in the inflation frame 21 are connected to the step-by-step direct-acting valves, the workers operate the rotating wheel 62, and the rotating wheel 62 drives the moving rod 61 to rotate. Since the clamping frame 22 and the moving rod 61 are connected by a threaded connection, when the moving rod 61 rotates, the clamping frame 22 will move along the moving rod 61 to approach the inflation frame 21. At the same time, multiple guide rods 5 constrain the movement trajectory of the clamping frame 22, so that the clamping frame 22 moves in a straight line close to the inflation frame 21. When the sealing plug 221 fixedly connected in the clamping frame 22 is inserted into the end of the corresponding step-by-step direct-acting valve away from the inflation frame 21, the sealing plug 221 seals the step-by-step direct-acting valve, and then the worker stops the rotation of the rotating wheel 62. The friction between the clamping frame 22 and the moving rod 61, and the friction between each sealing plug 221 and the corresponding step-by-step direct-acting valve fix the relative position of the clamping frame 22 and the inflation frame 21.

[0032] The worker operates the lifting cylinder 42 to extend the telescopic rod 43 and lower the test frame 2 into the test liquid 12. Then, the air pump 31 inputs air into the connecting pipe 33. The air flows through the connecting pipe 33 and the docking pipe 32 and enters the inflation channel 211. The sealing sleeve 331 seals the connection between the connecting pipe 33 and the docking pipe 32. After the air flow enters the inflation channel 211, the air flow flows into each step-by-step direct-acting valve through the inflation tube 212 connected to the inflation channel 211. Air is filled in the step-by-step direct-acting valve and the internal pressure begins to rise. If the step-by-step direct-acting valve has cracks, continuous bubbles will appear in the detection liquid 12 and rise, thereby achieving the purpose of detection. If the pressure in the step-by-step direct-acting valve is too high due to an operational error by the worker, the internal pressure of the step-by-step direct-acting valve is greater than the friction between the sealing plug 221 and the step-by-step direct-acting valve, and the sealing plug 221 is ejected from the step-by-step direct-acting valve. At the same time, the clamping frame 22 moves linearly away from the inflation frame 21 along the guide rod 5, and the moving rod 61 and the rotating wheel 62 rotate in coordination to achieve the effect of protecting the step-by-step direct-acting valve.

[0033] After the inspection is completed, the worker operates the lifting cylinder 42 to lift the inspection frame 2 from the inspection liquid 12. Then, the worker rotates the rotating wheel 62 in the opposite direction, and the motion rod 61 follows the rotating wheel 62 to rotate in the opposite direction, so that the clamping frame 22 moves linearly away from the inflation frame 21 under the constraint of the guide rod 5, and the sealing plug 221 is pulled out of the step-by-step direct-acting valve. The worker simply removes the step-by-step direct-acting valve from the inflation frame 21, achieving the purpose of simultaneously inspecting multiple step-by-step direct-acting valves. In summary, through the above steps, the effect of improving the inspection efficiency of multiple step-by-step direct-acting valves is achieved.

[0034] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should fall within the scope of protection of the present invention.

Claims

1. A pneumatic test device for a step-by-step direct-acting valve, characterized by: The invention comprises a body (1), a detection pool (11) is provided in the body (1), the detection pool (11) is filled with a detection liquid (12), a rectangular detection frame (2) is provided in the detection pool (11), the detection frame (2) is parallel to the bottom wall of the detection pool (11), the detection frame (2) is divided into two at the midpoint of the width direction side, forming an n-shaped inflation frame (21) and an n-shaped clamping frame (22), the opening of the inflation frame (21) and the opening of the clamping frame (22) are arranged opposite to each other, an inflation channel (211) is provided in the inflation frame (21), the inflation channel (211) is located in the longer side of the inflation frame (21), an inflation tube (212) is fixedly connected to the side of the inflation frame (21) facing the clamping frame (22), the inflation tube (212) is perpendicular to the side of the inflation frame (21), and the inflation tube (212) is perpendicular to the side of the inflation frame (21). (212) is provided with a plurality of inflation tubes (212) in a linear array, each inflation tube (212) is inserted into the inflation frame (21) and communicated with the inflation channel (211), the clamping frame (22) is fixedly connected with a sealing plug (221) at a position facing the inflation tube (212), the number of the sealing plugs (221) is equal to the number of the inflation tubes (212), and the sealing plugs (221) correspond to the inflation tubes (212) one by one; an inflation component (3) is provided between the inflation channel (211) and the detection pool (11), and the inflation component (3) provides airflow for the inflation channel (211); a motion component (6) is provided between the inflation frame (21) and the clamping frame (22), and the motion component (6) allows the clamping frame (22) to move linearly toward or away from the inflation frame (21).

2. A pneumatic test device for a step-by-step direct-acting valve according to claim 1, characterized in that: A sealing ring (2121) is provided at the connection position between each of the inflation tubes (212) and the inflation frame (21), and the sealing ring (2121) is a sealing ring (2121) made of rubber material.

3. A pneumatic test device for a step-by-step direct-acting valve according to claim 2, characterized in that: A support assembly (4) is provided between the detection pool (11) and the detection frame (2), and the support assembly (4) includes an arched support frame (41). A lifting cylinder (42) is fixedly connected to the top of the support frame (41). The lifting cylinder (42) has a telescopic rod (43). The telescopic rod (43) passes through the support frame (41) and is fixedly connected to the inflation frame (21).

4. A pneumatic test device for a step-by-step direct-acting valve according to claim 3, characterized in that: The inflation assembly (3) comprises an air pump (31) fixedly connected to the top of the detection pool (11) and a docking pipe (32) inserted at the end of the inflation frame (21); the docking pipe (32) is fixedly connected to the inflation channel (211); the pipe body of the docking pipe (32) is fixedly connected to the inflation frame (21); the air pump (31) is connected to a connecting pipe (33); the connecting pipe (33) is made of rubber material; the connecting pipe (33) is sleeved on the end of the docking pipe (32) away from the inflation channel (211); and the connecting pipe (33) is communicated with the docking pipe (32).

5. The pneumatic test device for a step-by-step direct-acting valve according to claim 4, characterized in that: A sealing sleeve (331) made of silicone material is provided between the connecting pipe (33) and the butt joint pipe (32). One end of the sealing sleeve (331) extends to the pipe body of the connecting pipe (33), and the other end extends to the pipe body of the butt joint pipe (32). The sealing sleeve (331) tightly wraps the connection position between the connecting pipe (33) and the butt joint pipe (32) inside.

6. The pneumatic test device for a step-by-step direct-acting valve according to claim 1, characterized in that: A guide rod (5) is provided between the inflation frame (21) and the clamping frame (22), one end of the guide rod (5) is fixedly connected to the side of the inflation frame (21) facing the clamping frame (22), and the other end passes through the clamping frame (22). A plurality of guide rods (5) are provided, and the ends of the plurality of guide rods (5) passing through the clamping frame (22) are fixedly connected to a support plate (51). Each guide rod (5) is perpendicular to the support plate (51), and the length of the support plate (51) is equal to the length of the clamping frame (22).

7. The pneumatic testing device for a step-by-step direct-acting valve according to claim 5, characterized in that: The motion assembly (6) includes a motion rod (61), which is located at the end of the inflation frame (21) away from the inflation assembly (3). The motion rod (61) passes through the inflation frame (21) and the clamping frame (22) and is fixedly connected to the support plate (51) through a bearing. The motion rod (61) is provided with a thread. The inflation frame (21) is not threadedly connected to the motion rod (61), and the clamping frame (22) is threadedly connected to the motion rod (61). When the motion rod (61) rotates in the inflation frame (21), the clamping frame (22) performs linear motion along the motion rod (61). The end of the motion rod (61) passing through the inflation frame (21) is fixedly connected to a rotating wheel (62), and the axis of the rotating wheel (62) coincides with the motion rod (61).

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