A high temperature testing device for a flow dividing valve block
By introducing an airflow circulation and filtration system into the high-temperature testing device for the diverter valve block, the problem of temperature non-uniformity was solved, the testing accuracy and fan lifespan were improved, and the high-temperature testing quality of the diverter valve block was ensured.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU HEZHUO ELECTROMECHANICAL TECH CO LTD
- Filing Date
- 2025-09-24
- Publication Date
- 2026-08-04
AI Technical Summary
The existing high-temperature testing chamber exhibits significant temperature differences between different areas during heating tests, which affects the test quality.
A high-temperature testing device for a diverter valve block was designed. The device uses a fan to create airflow circulation, which allows heat to be evenly distributed inside the test chamber. The device combines baffles and tilting plates to control heat distribution and ensure consistent temperature. The device also uses a filter to keep the oil clean, reducing test errors and fan aging.
This achieves higher accuracy in test results and extends the lifespan of the fan. Through uniform temperature distribution and clean oil circulation, it improves the accuracy of testing and the durability of the equipment.
Smart Images
Figure CN224594186U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of flow divider block processing, specifically a high-temperature testing device for flow divider blocks. Background Technology
[0002] The flow divider block is a core block component in a hydraulic system responsible for "uniformly distributing hydraulic oil". It has precision oil passages inside and reserved oil inlet and multiple oil outlets on the outside. It is widely used in scenarios that require multiple actuators to work synchronously. It can simplify the connection of hydraulic lines and ensure the sealing of oil passages through built-in seals, and adapt to the needs of hydraulic systems with different pressure levels.
[0003] The high-temperature test process for the diversion valve block involves first fixing the diversion valve block onto an adjustable fixture inside the high-temperature test chamber. After closing the chamber door, the heating system is activated, and the temperature inside the chamber is stabilized within the target range using a temperature controller. Once the temperature reaches the target range, the external hydraulic system is activated, powered by the oil tank, pressurized by the gear pump, and adjusted to the required test pressure by the pressure regulating valve. High-pressure oil is then transported to the valve block inlet inside the chamber via oil pipes. Subsequently, the pressure and flow data at each outlet of the valve block on the instrument panel are observed to ensure uniformity. At the same time, the oil receiving pan is checked for any oil leakage through the observation window of the chamber door. After a period of continuous pressure holding test, if the data is stable and there is no leakage, the valve block is deemed to have met the performance standards at high temperatures; otherwise, it is deemed to have failed.
[0004] In existing high-temperature test chambers, the temperature varies greatly between different areas during heating tests due to the relatively singular location of the heating devices, which affects the test quality. Therefore, a high-temperature test device for a diverter valve block is proposed to address the above problem. Utility Model Content
[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.
[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A high-temperature testing device for a diversion valve block, comprising a test bench; an oil storage tank fixedly connected to the top of the test bench; a gear pump fixedly connected to the top of the test bench; the oil storage tank and the gear pump connected via a pipeline; a pressure regulating valve fixedly connected to the top of the test bench; multiple flow meters fixedly connected to the top of the test bench; multiple pressure sensors fixedly connected to the top of the test bench; a test chamber fixedly connected to the top of the test chamber; a sealing plate rotatably connected to the top of the test chamber; and an air inlet opened on the side wall of the sealing plate. The sealing plate has an air outlet on its side wall; a fan is installed at the bottom of the air outlet; a diversion valve block body is installed at the bottom of the test chamber; multiple sets of connecting pipes are fixed to the side wall of the test chamber; a clamp is fixed to the bottom of the test chamber; the fan rotation causes the air inlet to draw in the air inside the test chamber and then discharge it from the air outlet, forming an airflow circulation inside the test chamber. This allows heat to be evenly diffused inside the test chamber, ensuring a consistent temperature around the diversion valve block body, reducing test errors caused by uneven temperature distribution inside the test chamber, ensuring test results, and increasing the accuracy of the diversion valve block body test.
[0007] Preferably, a baffle plate is slidably connected to the side wall of the air outlet; a baffle plate is slidably connected to the side wall of the air inlet; a handle is fixed to the side wall of the baffle plate; by inserting the baffle plate into the middle of the air outlet and the air inlet, heat can be blocked, and the heat can be separated inside the test chamber, reducing the direct contact of high-temperature airflow with the fan for a long time, which would lead to faster fan aging and extend the service life of the fan.
[0008] Preferably, a support rod is fixedly connected to the side wall of the test chamber; a fixing rod is rotatably connected to the side wall of the support rod; a fixing groove is fixedly connected to the side wall of the sealing plate; the fixing rod and the fixing groove are correspondingly arranged; by inserting the fixing rod into the fixing groove, the sealing plate can be stably fixed at a preset opening and closing angle, which can ensure that the sealing plate is stably fixed when the diversion valve block body is connected and installed inside the test chamber, reducing the shaking of the sealing plate due to the unfixed position during the installation of the valve block.
[0009] Preferably, a pair of inclined plates are fixed to the side wall of the sealing plate; the inclined plates are located at the air outlet; the inclined arrangement of the inclined plates can guide the high-temperature airflow to both sides, so that the airflow is more evenly dispersed when it blows into the test chamber, thereby increasing the stability of the overall temperature inside the test chamber.
[0010] Preferably, a filter box is fixedly connected to the top of the test bench; the filter box is located on the other side of the oil storage tank; a filter screen is fixedly connected to the top of the filter box; the filtration of the filter box and the filter screen can intercept impurities before the oil flows back to the oil storage tank, ensuring that the oil entering the circulation is clean and reducing the blockage of pipelines, flow meters and pressure sensors during long-term operation.
[0011] Preferably, the inner sidewall of the test chamber is provided with a placement slot; the placement slot is located around the test chamber; the placement slot can reduce the transfer of heat to the outside of the test chamber, ensure that the internal temperature of the test chamber is always stable within the required range for testing, further reduce the accelerated heat dissipation caused by the large temperature difference between the outside and the test chamber, and provide a stable temperature environment for the high-temperature testing of the diversion valve block body.
[0012] The advantages of this utility model are:
[0013] 1. The high-temperature testing device for a diversion valve block described in this utility model uses a fan to draw in air from the test chamber through the air inlet and discharge it from the air outlet, forming an airflow circulation inside the test chamber. This allows heat to be evenly diffused inside the test chamber, ensuring a consistent temperature around the diversion valve block body, reducing test errors caused by uneven temperature distribution inside the test chamber, guaranteeing test results, and increasing the accuracy of the diversion valve block body test.
[0014] 2. The high-temperature testing device for the diversion valve block described in this utility model can form a heat blockage by inserting a baffle plate into the middle of the air outlet and air inlet, thus keeping the heat inside the test chamber, reducing the direct contact of high-temperature airflow with the fan for a long time, which would accelerate the aging of the fan and extend its service life. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the main body of this utility model;
[0017] Figure 2 This is a schematic diagram of the structure of the fixing rod in this utility model;
[0018] Figure 3 This is a schematic diagram of the connecting pipe in this utility model;
[0019] Figure 4 This is a schematic diagram of the structure of the baffle plate in this utility model;
[0020] Figure 5 This is a schematic diagram of the inclined plate in this utility model.
[0021] In the diagram: 1. Test bench; 11. Oil tank; 12. Gear pump; 13. Pressure regulating valve; 14. Flow meter; 15. Pressure sensor; 16. Test chamber; 17. Sealing plate; 18. Air inlet; 19. Air outlet; 110. Fan; 111. Diverter valve block body; 112. Connecting pipe; 113. Clamp; 2. Baffle plate; 21. Handle; 3. Support rod; 31. Fixing rod; 32. Fixing groove; 4. Inclined plate; 5. Filter box; 51. Filter screen; 6. Placement groove. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0023] Specific implementation examples are given below.
[0024] like Figures 1 to 5As shown in the figure, a high-temperature testing device for a diversion valve block according to an embodiment of the present invention includes a test bench 1; an oil storage tank 11 is fixedly connected to the top of the test bench 1; a gear pump 12 is fixedly connected to the top of the test bench 1; the oil storage tank 11 and the gear pump 12 are connected by a pipeline; a pressure regulating valve 13 is fixedly connected to the top of the test bench 1; multiple flow meters 14 are fixedly connected to the top of the test bench 1; multiple pressure sensors 15 are fixedly connected to the top of the test bench 1; a test chamber 16 is fixedly connected to the top of the test bench 1; a sealing plate 17 is rotatably connected to the top of the test chamber 16; an air inlet 18 is opened on the side wall of the sealing plate 17; an air outlet 19 is opened on the side wall of the sealing plate 17; and the air outlet... A fan 110 is installed at the bottom of the port 19; a diversion valve block body 111 is installed at the bottom of the test chamber 16; multiple sets of connecting pipes 112 are fixed to the side wall of the test chamber 16; a clamp 113 is fixed to the bottom of the test chamber 16; during operation, the diversion valve block body 111 to be tested is placed at the bottom of the test chamber 16, and then multiple sets of connecting pipes 112 are connected to the oil inlet and outlet of the diversion valve block body 111. Then, the clamp 113 is rotated to fix the connecting pipes 112 at the bottom of the test chamber 16, and a thrust is applied to the sealing plate 17 to close the top of the test chamber 16. After the test chamber 16 is started, the internal temperature will rise. When the temperature reaches a certain target, due to the heating of a single location of the heating device, This results in uneven temperature distribution inside the test chamber 16. At this point, the fan 110 can be activated. The fan 110 draws air from the test chamber 16 through the air inlet 18 and then discharges it through the air outlet 19, thus circulating the air inside the test chamber 16 and creating uniform heating. The gear pump 12 is then activated to draw oil from the oil reservoir 11 through the pipeline. The oil then flows through the pressure regulating valve 13, flow meter 14, and pressure sensor 15, before entering the diversion valve block body 111 through the inlet connecting pipe 112. The oil inside the diversion valve block body 111 is then diverted out through the outlet connecting pipe 112. 2. The oil flowing out from inside passes through the flow meter 14 and pressure sensor 15 on the oil outlet side, and then flows back into the oil storage tank 11 through the pipeline to complete the circulation. By observing the data recorded by the flow meter 14 and pressure sensor 15, it can be determined whether the diversion valve block body 111 meets the standard. The fan 110 rotates to make the air inlet 18 draw in the air inside the test chamber 16 and discharge it from the air outlet 19, forming an airflow circulation inside the test chamber 16. This allows the heat to be evenly diffused inside the test chamber 16, ensuring that the temperature around the diversion valve block body 111 is consistent, reducing the test error caused by uneven temperature distribution inside the test chamber 16, ensuring the test results, and increasing the test accuracy of the diversion valve block body 111.
[0025] like Figure 2 and Figure 4As shown, a baffle plate 2 is slidably connected to the side wall of the air outlet 19; a baffle plate 2 is slidably connected to the side wall of the air inlet 18; a handle 21 is fixedly connected to the side wall of the baffle plate 2; during operation, when the fan 110 stops rotating, a pushing force is applied to the baffle plate 2, pushing the baffle plate 2 into the middle of the air outlet 19 and the air inlet 18. Subsequently, the baffle plate 2 can block the temperature inside the test chamber 16, so that the heat inside the test chamber 16 will not enter the air inlet 18 and the air outlet 19. When it is necessary to blow air into the test chamber 16 again, simply apply a pulling force to the handle 21 to open the air inlet 18 and the air outlet 19; by inserting the baffle plate 2 into the middle of the air outlet 19 and the air inlet 18, heat can be blocked, and the heat can be separated inside the test chamber 16, reducing the direct contact of high-temperature airflow with the fan 110 for a long time, which would lead to accelerated aging of the fan 110 and extend the service life of the fan 110.
[0026] like Figure 2 As shown, a support rod 3 is fixedly connected to the side wall of the test chamber 16; a fixing rod 31 is rotatably connected to the side wall of the support rod 3; a fixing groove 32 is fixedly connected to the side wall of the sealing plate 17; the fixing rod 31 and the fixing groove 32 are correspondingly arranged; during operation, when the diversion valve block body 111 is connected to the connecting pipe 112, the top of the test chamber 16 needs to be opened. When the sealing plate 17 is opened and closed at a certain angle, the fixing rod 31 can be inserted into the fixing groove 32 to fix the sealing plate 17; by inserting the fixing rod 31 into the fixing groove 32, the sealing plate 17 can be stably fixed at the preset opening and closing angle, so that the sealing plate 17 is stably fixed when the diversion valve block body 111 is connected and installed inside the test chamber 16, reducing the shaking of the sealing plate 17 due to the unfixed position during the valve block installation process.
[0027] like Figure 1 and Figure 5 As shown, a pair of inclined plates 4 are fixed to the side wall of the sealing plate 17; the inclined plates 4 are located at the air outlet 19; during operation, when the fan 110 rotates, it draws the high-temperature airflow inside the test chamber 16 from the air inlet 18 and blows it out from the air outlet 19. The blown airflow can come into contact with the pair of inclined plates 4. The inclined arrangement of the inclined plates 4 can guide the airflow to both sides; the inclined arrangement of the inclined plates 4 can guide the high-temperature airflow to both sides, so that the airflow is more evenly dispersed when it blows into the test chamber 16, increasing the stability of the overall temperature inside the test chamber 16.
[0028] like Figure 2As shown, a filter box 5 is fixedly connected to the top of the test bench 1; the filter box 5 is located on the other side of the oil storage tank 11; a filter screen 51 is fixedly connected to the top of the filter box 5; during operation, when the oil inside the diversion valve block body 111 flows from the oil outlet into the pipeline, the oil will enter the filter box 5, and then the filter screen 51 can filter the oil inside the pipeline; through the filtration of the filter box 5 and the filter screen 51, impurities can be intercepted before the oil flows back to the oil storage tank 11, ensuring that the oil entering the circulation is clean and reducing the blockage of pipelines, flow meters 14 and pressure sensors 15 during long-term operation.
[0029] like Figure 3 As shown, the inner wall of the test chamber 16 is provided with a placement groove 6; the placement groove 6 is located around the test chamber 16; during operation, before starting the test chamber 16 to heat up the interior, heat insulation cotton can be placed inside the placement groove 6, which can block the temperature inside the test chamber 16; the placement groove 6 can reduce the transfer of heat to the outside of the test chamber 16, ensuring that the temperature inside the test chamber 16 remains stable within the required range for testing, further reducing the accelerated heat dissipation caused by the large temperature difference between the outside and the test chamber 16, and providing a stable temperature environment for the high-temperature detection of the diversion valve block body 111.
[0030] Working principle: The body 111 of the diverter valve block to be tested is placed at the bottom of the test chamber 16. Then, multiple sets of connecting pipes 112 are connected to the oil inlet and outlet of the body 111. The clamp 113 is then rotated to fix the connecting pipes 112 at the bottom of the test chamber 16. A thrust is applied to the sealing plate 17 to close the top of the test chamber 16. After the test chamber 16 is started, the internal temperature will rise. When the temperature reaches a certain target, the uneven temperature distribution inside the test chamber 16 will occur due to the heating device heating from a single location. At this time, the fan 110 can be started to rotate. The rotation of the fan 110 causes the air inlet 18 to draw in the air inside the test chamber 16, and then exhausts it from the outlet 19. The air inside the test chamber 16 is blown out, allowing airflow to circulate and creating uniform heating. The gear pump 12 is then activated to draw oil from the oil tank 11 through the pipeline. The oil then flows through the pressure regulating valve 13, flow meter 14, and pressure sensor 15, before entering the diversion valve block body 111 through the inlet connecting pipe 112. The oil inside the diversion valve block body 111 is then diverted out through the outlet connecting pipe 112. The oil flowing out of the outlet connecting pipe 112 then passes through the flow meter 14 and pressure sensor 15 on the outlet side before returning to the oil tank 11 through the pipeline, completing the circulation. The flow meter 14 and pressure sensor 15 are observed. The data recorded by device 15 can determine whether the diversion valve block body 111 meets the standard. When the fan 110 stops rotating, a pushing force is applied to the baffle plate 2, pushing the baffle plate 2 into the middle of the air outlet 19 and the air inlet 18. Subsequently, the baffle plate 2 can block the temperature inside the test chamber 16, so that the heat inside the test chamber 16 will not enter the air inlet 18 and the air outlet 19. When it is necessary to blow air into the test chamber 16 again, simply apply a pulling force to the handle 21 to open the air inlet 18 and the air outlet 19. When connecting the diversion valve block body 111 to the connecting pipe 112, the top of the test chamber 16 needs to be opened. When the sealing plate 17 is opened or closed at a certain angle... The fixing rod 31 can be inserted into the fixing groove 32 to fix the sealing plate 17. When the fan 110 rotates, it draws the high-temperature airflow inside the test chamber 16 from the air inlet 18 and blows it out from the air outlet 19. The blown airflow can contact a pair of inclined plates 4. The inclined setting of the inclined plates 4 can guide the airflow to both sides. When the oil inside the diversion valve block body 111 flows from the oil outlet into the pipeline, the oil will enter the filter box 5. Then the filter screen 51 can filter the oil inside the pipeline. Before starting the test chamber 16 to heat up the inside, heat insulation cotton can be placed inside the placement groove 6. The heat insulation cotton placed inside the placement groove 6 can block the temperature inside the test chamber 16.
[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A high-temperature testing device for a diverter valve block, characterized in that: The test platform includes a test bench (1); an oil tank (11) is fixedly connected to the top of the test bench (1); a gear pump (12) is fixedly connected to the top of the test bench (1); the oil tank (11) and the gear pump (12) are connected by a pipeline; a pressure regulating valve (13) is fixedly connected to the top of the test bench (1); multiple flow meters (14) are fixedly connected to the top of the test bench (1); multiple pressure sensors (15) are fixedly connected to the top of the test bench (1); and a test chamber (16) is fixedly connected to the top of the test bench (1). The test chamber (16) is rotatably connected to a sealing plate (17) at its top; the sealing plate (17) has an air inlet (18) on its side wall; the sealing plate (17) has an air outlet (19) on its side wall; a fan (110) is provided at the bottom of the air outlet (19); a diversion valve block body (111) is provided at the bottom of the test chamber (16); multiple sets of connecting pipes (112) are fixedly connected to the side wall of the test chamber (16); a clamp (113) is fixedly connected to the bottom of the test chamber (16).
2. The high temperature test device for a flow divider block of claim 1, wherein: A baffle plate (2) is slidably connected to the side wall of the air outlet (19); a baffle plate (2) is slidably connected to the side wall of the air inlet (18); and a handle (21) is fixedly connected to the side wall of the baffle plate (2).
3. The high-temperature testing device for a diverter valve block according to claim 2, characterized in that: The test chamber (16) has a support rod (3) fixedly connected to its side wall; the support rod (3) has a fixed rod (31) rotatably connected to its side wall; the sealing plate (17) has a fixed groove (32) fixedly connected to its side wall; the fixed rod (31) and the fixed groove (32) are correspondingly arranged.
4. The high-temperature testing device for a diverter valve block according to claim 3, characterized in that: A pair of inclined plates (4) are fixed to the side wall of the sealing plate (17); the inclined plates (4) are located at the air outlet (19).
5. The high-temperature testing device for a diverter valve block according to claim 4, characterized in that: A filter box (5) is fixedly connected to the top of the test bench (1); the filter box (5) is located on the other side of the oil storage tank (11); a filter screen (51) is fixedly connected to the top of the filter box (5).
6. The high-temperature testing device for a diverter valve block according to claim 5, characterized in that: The test chamber (16) has a placement slot (6) on its inner side wall; the placement slot (6) is located around the test chamber (16).