Filter testing device

Abstract

The utility model discloses a filter testing device which is characterized in that the filter testing device comprises a bottom plate, a discharging block and a testing mechanism, the discharging block is installed on the bottom plate, a discharging groove is formed in the top of the discharging block, the testing mechanism is installed on the bottom plate through a support, and the testing mechanism is arranged over the discharging block; the testing mechanism comprises a vertical air cylinder, a pressing plate, a sealing block and a pressure sensor, the vertical air cylinder is installed on the support, the top of the pressing plate is connected with an output shaft at the bottom of the vertical air cylinder, the sealing block is installed on the bottom face of the pressing plate, and the sealing block is right opposite to the discharging groove; an air hole is formed in the bottom of the sealing block, and an air pipe is arranged on the pressing plate and connected with the air hole. A detection hole is formed in the bottom of the sealing block, and the pressure sensor is installed in the detection hole. According to the utility model, the product test is realized, and the product qualification rate is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a filter especially relates to a filter testing device mainly used for the leakproofness, filterability test of metal filter. BACKGROUND

[0002] Filter is mainly used for air filtration or impurity filtration in fluid, and the filter mainly includes a shell and a filter core. In the prior art, the filterability of the filter core is generally detected, and the flux of the filter core after assembly is not detected. However, since the filter is assembled by the filter core and the shell, due to the assembly process, the contact position of the filter core after cutting and the contact position of the shell, the following disadvantages exist:

[0003] 1. There is a large gap at the connection between the shell and the filter core, which can affect the filterability;

[0004] 2. There is also a large gap at the connection of the two ends of the ring-shaped filter core, which can also affect the filterability.

[0005] This way can affect the performance of the filter core. SUMMARY

[0006] The utility model aims at providing a filter testing device, through using the structure, realized the quick detection of filter, effectively guaranteed the performance of product.

[0007] In order to achieve the above object, the utility model adopts the technical scheme of a filter testing device, including bottom plate, discharge block and test mechanism, the discharge block is installed on the bottom plate, the discharge block top is equipped with discharge groove, the test mechanism is installed through support on the bottom plate, and the test mechanism is set in the direct upper of the discharge block;

[0008] The test mechanism includes vertical air cylinder, pressing plate, sealing block and pressure sensor, the vertical air cylinder is installed on the support, the top of the pressing plate is connected with the output shaft of the bottom of the vertical air cylinder, the sealing block is installed on the bottom surface of the pressing plate, and the sealing block is opposite to the discharge groove.

[0009] The bottom of the sealing block is equipped with air hole, and the pressing plate is equipped with air pipe connected with the air hole.

[0010] The bottom of the sealing block is equipped with detection hole, and the pressure sensor is installed in the detection hole.

[0011] In the above technical scheme, the air pipe is equipped with electromagnetic valve.

[0012] In the above technical scheme, the top of the pressing plate is equipped with through hole communicated with the detection hole, the connecting pipe is installed on the through hole, and the pressure sensor is installed in the connecting pipe.

[0013] In the technical scheme, the sealing block is a rubber sealing block.

[0014] In the technical scheme, the pressure sensor is connected with a controller.

[0015] In the technical scheme, two guide holes are arranged on the support, the guide holes are parallel to the vertical air cylinder, two guide rods are arranged on the pressing plate, and the upper portion of each guide rod is slidably connected with a guide hole.

[0016] In the technical scheme, a longitudinal slide rail is arranged on the bottom plate, a longitudinal air cylinder is arranged on the bottom plate beside the longitudinal slide rail, the bottom portion of the discharging block is slidably arranged on the longitudinal slide rail, the output shaft of the longitudinal air cylinder is connected with the discharging block, and the longitudinal air cylinder drives the discharging block to move along the longitudinal slide rail.

[0017] In the technical scheme, a blocking piece is arranged on the bottom plate behind the longitudinal air cylinder, a connecting plate is arranged on the side portion of the discharging block, the output shaft of the longitudinal air cylinder is connected with the connecting plate, and the blocking piece is arranged behind the connecting plate.

[0018] When the output shaft of the longitudinal air cylinder is in an extended state, the connecting plate abuts against the blocking piece, and the discharging groove is arranged directly below the sealing block.

[0019] When the output shaft of the longitudinal air cylinder is in an extended state, the connecting plate is arranged away from the blocking piece, and the discharging block is arranged below the front side of the support.

[0020] In the technical scheme, a sealing layer is arranged on the bottom portion of the discharging groove.

[0021] The sealing layer is a flexible sealing layer.

[0022] Compared with the prior art, the utility model has the following advantages due to the technical scheme:

[0023] 1. In the utility model, the bottom portion of the product is supported and sealed by the discharging groove, the top portion of the product is sealed by the sealing block, the product is ventilated through the air hole, the pressure sensor detects the pressure in the product during the ventilation process, the sealing property or the unit flow property of the product is tested, the product is rapidly detected, each product is tested, and the performance and the qualified rate of the product are effectively ensured. DRAWINGS

[0024] Figure 1 It is the structural schematic view in the utility model embodiment one;

[0025] Figure 2is another view of the structure of the embodiment one of the utility model;

[0026] Figure 3 is the cross section structure schematic diagram of the connecting place of the pressing plate and the sealing block in the embodiment one of the utility model.

[0027] Wherein: 1, bottom plate;2, discharge block;3, discharge groove;4, support;5, vertical cylinder;6, pressing plate;7, sealing block;8, pressure sensor;9, air hole;10, air pipe;11, detection hole;12, through hole;13, connecting pipe;14, guide rod;15, longitudinal slide rail;16, longitudinal cylinder;17, blocking piece;18, connecting plate. Specific implementation

[0028] The utility model is further described below in combination with the drawings and embodiments:

[0029] Embodiment one: refer to Figures 1-3 A filter testing device, including bottom plate 1, discharge block 2 and testing mechanism, the discharge block 2 is installed on the bottom plate 1, the top of discharge block 2 is equipped with discharge groove 3, the testing mechanism is installed on the bottom plate 1 through support 4, and the testing mechanism is set in the directly above of discharge block 2;

[0030] The testing mechanism includes vertical cylinder 5, pressing plate 6, sealing block 7 and pressure sensor 8, the vertical cylinder 5 is installed on the support 4, the top of pressing plate 6 is connected with the output shaft of the bottom of vertical cylinder 5, the sealing block 7 is installed on the bottom surface of pressing plate 6, and the sealing block 7 is set to the discharge groove 3 directly;

[0031] The bottom of sealing block 7 is equipped with air hole 9, and air pipe 10 is connected with air hole 9 on pressing plate 6;In the embodiment, the top of air hole and the top of pressing plate are communicated, and the air pipe is arranged above the pressing plate.

[0032] The bottom of sealing block 7 is equipped with detection hole 11, and pressure sensor 8 is installed in detection hole 11.

[0033] In actual use, the product to be tested is placed in the discharge groove, then the output shaft of the vertical air cylinder is extended, driving the pressing plate and the sealing block to move downward, the sealing block is pressed on the top of the product and seals the top of the product. The air pipe is connected with the air supply mechanism, which provides a predetermined pressure, then the air supply mechanism supplies air through the air pipe, which is sent into the product through the air hole. Since the detection hole is connected with the bottom of the sealing block, the pressure sensor is installed in the detection hole. At this time, the internal pressure of the product is detected through the pressure sensor, thereby realizing the rapid detection of the product. The pressure sensor is connected with the controller, preferably a digital controller. A buzzer alarm can be connected to the digital controller. In the embodiment, it can be mainly used for testing two performances of the product. The first is to test the sealing performance of the product. The shell of the product is a hollow structure penetrating through both ends (the shell side is rolled from a plate-shaped material, and the connection part is welded or connected by other means). The filter element of the filter is installed in the shell. When testing, the bottom of the product is placed in the discharge groove. The bottom of the discharge groove is provided with a sealing layer. The sealing layer is a flexible sealing layer. The opening at the bottom is placed on the sealing layer, and the opening at the bottom is sealed by the sealing layer to prevent air leakage. When the sealing block is driven downward by the pressing plate, the sealing layer is pressed on the opening at the top of the product, and the opening at the top of the product is sealed by the sealing block. Then the air hole ventilates the opening at the top of the product, so that the air enters the product. Since the openings at both ends of the product are sealed, the air pressure in the product is fed back to the detection hole, and the air pressure in the product is detected by the pressure sensor. If the shell leaks, the pressure value detected by the pressure sensor is different from the qualified pressure value, indicating that there is a leakage problem. The controller can display the data or the buzzer alarm can alarm to remind the operator that the product is unqualified. The second is to test the flow performance of the product. In this way, one end of the product is an inlet, and the outer surface is an outlet. Fluid or gas enters from the inlet, then flows out from the outlet after being filtered by the product. In this test method, the bottom of the product is placed in the discharge groove, and the bottom of the product is supported and limited by the discharge groove. The pressing plate and the sealing block move downward, the sealing block is pressed on the inlet at the top of the product, and the inlet of the product is sealed. The air hole ventilates the product. Since the product has filtering performance, the product will also give the product a certain resistance when the gas passes through the product, and the air pressure will change, which will be detected by the pressure sensor. If the pressure detected by the pressure sensor exceeds the preset value, it means that the resistance of the filter is too large, and the filter has certain problems, such as easy to block or block point, and the filter is unqualified. If the pressure detected by the pressure sensor is much smaller than the preset value, it means that there is a leakage somewhere or the filtering performance of the filter is not good. The controller is used to feedback and realize the rapid detection of the product, which has high detection efficiency and can detect each product to ensure the product qualification rate.

[0034] The air pipe is provided with an electromagnetic valve, which is used for controlling the air supply or stopping the air supply of the air hole by the air pipe.

[0035] Referring to Figure 3 As shown in the figure, the top of the pressing plate 6 is provided with a through hole 12 which is communicated with the detection hole 11, and a connecting pipe 13 is installed on the through hole 12, and the pressure sensor 8 is installed in the connecting pipe 13.

[0036] In this embodiment, a connecting pipe is also provided, and the pressure sensor is installed in the connecting pipe, so that the installation, maintenance and disassembly of the pressure sensor are facilitated, and the pressure sensor is connected with the controller through a line.

[0037] The sealing block is a rubber sealing block. The rubber sealing block is abutted against the product and is used for sealing the top of the product. The rubber sealing block has a certain elastic deformation capacity, so that the product can be sealed when the pressing plate drives the sealing block to be pressed on the product, and the air leakage is prevented.

[0038] Referring to Figure 1 , 2 As shown in the figure, the bracket 4 is provided with two guide holes which are parallel to the vertical air cylinder 5, and two guide rods 14 are installed on the pressing plate 6, and the upper portion of each guide rod 14 is slidably connected with a guide hole.

[0039] The guide holes and the guide rods can guide the movement of the pressing plate, prevent the vertical air cylinder from being deformed by the radial force, prolong the service life of the vertical air cylinder, and reduce the maintenance rate.

[0040] Referring to Figure 1 , 2 As shown in the figure, a longitudinal slide rail 15 is arranged on the bottom plate 1, a longitudinal air cylinder 16 is arranged on the bottom plate 1 beside the longitudinal slide rail 15, the bottom of the discharging block 2 is slidably arranged on the longitudinal slide rail 15, the output shaft of the longitudinal air cylinder 16 is connected with the discharging block 2, and the longitudinal air cylinder 16 drives the discharging block 2 to move along the longitudinal slide rail 15.

[0041] In this embodiment, the longitudinal slide rail and the longitudinal air cylinder are arranged, which can drive the discharging block to move forward and backward, so that the discharging block is moved below the pressing plate or is moved out of the pressing plate. When the discharging block is moved below the pressing plate, the pressing plate drives the sealing block to test the product. When the discharging block is moved out of the pressing plate, the product is taken out, so that the product can be automatically taken out by a mechanical hand, and the automatic testing of the product can be realized.

[0042] Referring to Figure 1 , 2As shown, the bottom plate on the rear side of the longitudinal cylinder 16 is provided with a blocking piece 17, the side of the feeding block 2 is provided with a connecting plate 18, the output shaft of the longitudinal cylinder 16 is connected with the connecting plate 18, and the blocking piece 17 is arranged on the rear side of the connecting plate 18;

[0043] In the state that the output shaft of the longitudinal cylinder is extended, the connecting plate is abutted on the blocking piece, and the feeding groove is arranged directly below the sealing block;

[0044] In the state that the output shaft of the longitudinal cylinder is extended, the connecting plate is arranged away from the blocking piece, and the feeding block is arranged below the front side of the support.

[0045] The arrangement of the blocking piece can limit the moving position of the feeding block, so that after the output shaft of the longitudinal cylinder is extended, the feeding block can be just arranged directly below the pressing plate, so that the sealing block is arranged directly above the product, and when the pressing plate is lowered subsequently, the sealing block is just pressed on the product, so as to seal the top of the product, thereby realizing the detection of the product and ensuring the normal detection.

Claims

1. A filter testing device characterized by: The device comprises a base plate, a feeding block and a testing mechanism, the feeding block is installed on the base plate, the top of the feeding block is provided with a feeding groove, the testing mechanism is installed on the base plate through a support, and the testing mechanism is arranged above the feeding block; The testing mechanism comprises a vertical air cylinder, a pressing plate, a sealing block and a pressure sensor, the vertical air cylinder is installed on the support, the top of the pressing plate is connected with the output shaft of the bottom of the vertical air cylinder, the sealing block is installed on the bottom surface of the pressing plate, and the sealing block is arranged opposite to the feeding groove; The bottom of the sealing block is provided with an air hole, and the pressing plate is provided with an air pipe connected with the air hole; The bottom of the sealing block is provided with a detection hole, and the pressure sensor is installed in the detection hole.

2. The filter testing device of claim 1, wherein: An electromagnetic valve is arranged on the air pipe.

3. The filter testing device of claim 1, wherein: The top of the pressing plate is provided with a through hole communicated with the detection hole, a connecting pipe is installed on the through hole, and the pressure sensor is installed in the connecting pipe.

4. The filter testing device of claim 1, wherein: The sealing block is a rubber sealing block.

5. The filter testing device of claim 1, wherein: The pressure sensor is connected with a controller.

6. The filter testing device of claim 1, wherein: Two guide holes are arranged on the support and parallel to the vertical air cylinder, two guide rods are installed on the pressing plate, and the upper portion of each guide rod is slidably connected with a guide hole.

7. The filter testing device of claim 1, wherein: A longitudinal slide rail is arranged on the base plate, a longitudinal air cylinder is arranged on the base plate beside the longitudinal slide rail, the bottom of the feeding block is slidably arranged on the longitudinal slide rail, the output shaft of the longitudinal air cylinder is connected with the feeding block, and the longitudinal air cylinder drives the feeding block to move along the longitudinal slide rail.

8. The filter testing device of claim 7, wherein: A blocking piece is arranged on the base plate behind the longitudinal air cylinder, a connecting plate is arranged on the side of the feeding block, the output shaft of the longitudinal air cylinder is connected with the connecting plate, and the blocking piece is arranged behind the connecting plate; When the output shaft of the longitudinal air cylinder is in an extended state, the connecting plate abuts against the blocking piece, and the feeding groove is arranged below the sealing block; When the output shaft of the longitudinal air cylinder is in an extended state, the connecting plate is arranged away from the blocking piece, and the feeding block is arranged below the front side of the support.

9. The filter testing device of claim 1, wherein: The bottom of the feeding groove is provided with a sealing layer. The sealing layer is a flexible sealing layer.

Images