Equipment for detecting heat resistance of PFA (Polyfluoroalkoxy)

Abstract

The utility model relates to PFA heat resistance detection equipment in the technical field of detection equipment, which comprises a detection box, an electric heating block I is arranged on the inner wall of the detection box, and an exhaust pipe is arranged at the top of the detection box; the detection box is internally provided with an object placing table, the center of the bottom of the object placing table is fixedly connected with a vertical rotating shaft, the vertical rotating shaft is connected with a stepping motor, a clamping piece is arranged above the object placing table, and the clamping piece comprises a bidirectional screw rod, two clamping blocks, a groove, a bevel gear I, a bevel gear II, a rotating rod and a knob which are matched with one another. The heat resistance detection device is simple and reasonable in structure, convenient to use and stable in clamping effect, materials are uniformly heated, and efficient and accurate heat resistance detection is realized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of detection equipment, and specifically relates to a PFA heat resistance detection equipment. BACKGROUND

[0002] PFA plastic is a copolymer of a small amount of perfluoropropyl perfluorovinyl ether and polytetrafluoroethylene. This resin can be directly processed into products by using ordinary thermoplastic forming methods. It is suitable for making corrosion-resistant parts, wear-resistant parts, sealing parts, insulating parts and medical device parts, high-temperature wire and cable insulation layers, corrosion-resistant equipment, sealing materials, pump and valve bushings, and chemical containers. The heat resistance of PFA material needs to be detected after production. The patent file with the patent number CN218180578U discloses a heat resistance detection device for PVC plastic toys, which comprises a detection device body, a gas cylinder hinged below the detection device body, a bottom plate rotatably connected below the detection device body, a gas cylinder output end hinged to the bottom plate, a water tank arranged below the detection device body, motor fixed at the upper ends of the water tank, a steel wire rope wound around the motor output end, a filter plate slidably connected in the water tank, the filter plate connected to one end of the steel wire rope, and a cooling element fixed on one side of the water tank. The patent is beneficial to the winding and unwinding of the steel wire rope by starting the motor, and then driving the filter plate to move, which is beneficial to the fishing of the plastic toy in the water tank. Although it is beneficial to the cooling of the plastic toy, the position of the plastic toy is fixed during heat resistance detection, the heating uniformity is low, and the detection accuracy is affected. Therefore, a PFA heat resistance detection equipment is needed to solve the above technical problems. CONTENT OF THE UTILITY MODEL

[0003] In view of the above defects in the prior art, the utility model provides a PFA heat resistance detection equipment, which comprises a detection box, an electric heating block one is arranged on the inner wall of the detection box, and an exhaust pipe is arranged at the top of the detection box; a placing table is arranged in the detection box, a vertical rotating shaft is fixedly connected to the center of the bottom of the placing table, a stepping motor is connected to the vertical rotating shaft, a clamping piece is arranged above the placing table, the clamping piece comprises a bidirectional screw rod and two clamping blocks, a groove is arranged on the placing table and passes through the center of the placing table, the bidirectional screw rod is located in the groove, the two ends of the bidirectional screw rod are rotatably connected to the two ends of the groove through bearings, a slide block is threadedly connected to the forward thread and the reverse thread of the bidirectional screw rod, the bottom of the slide block is matched with the groove and is slidably arranged in the groove, the top of each slide block is fixedly connected to the corresponding clamping block, a conical gear one is fixedly connected to the bidirectional screw rod, the conical gear one is engaged with a conical gear two, the conical gear two is connected to a rotating rod, the rotating rod penetrates through the placing table and is connected to a knob, a transmission cavity is arranged in the placing table, and the conical gear one and the conical gear two are located in the transmission cavity, so that the placement of materials on the placing table is not affected.

[0004] Preferably, the testing box is provided with an openable and closable door, and the door is provided with a transparent observation window.

[0005] Preferably, the exhaust pipe is provided with a filter box, and the filter box is provided with a filter layer.

[0006] Preferably, the filter layer includes an activated carbon layer.

[0007] Preferably, the end of the rotating rod extending out of the platform has a receiving cavity, and a retractable connecting rod is provided inside the receiving cavity. One end of the connecting rod extends out of the receiving cavity and is fixedly connected to the knob, while the other end of the connecting rod is always located inside the receiving cavity and fixedly connected to a limiting block one. A matching sliding groove is provided on the side wall of the receiving cavity corresponding to the limiting block one, and the limiting block one is slidably disposed in the sliding groove. A limiting block two is provided on the surface of the platform corresponding to the knob, and multiple limiting grooves that cooperate with the limiting block two are provided on the platform. This arrangement allows the connecting rod to be pulled out when the rotating rod needs to be rotated, the limiting block two to disengage from the limiting groove and release the limiting. Rotating the knob, under the limiting action of the limiting block one and the sliding groove, causes the rotating rod to rotate synchronously with the connecting rod, driving the bevel gear two to rotate, which in turn drives the bevel gear one to rotate, thereby causing the bidirectional screw to rotate. The two clamping blocks move towards or away from each other, realizing the clamping or releasing of materials. Once the material is clamped, the connecting rod is pushed into the receiving cavity, and the second limiting block enters its corresponding limiting groove, locking the connecting rod in place. This prevents the connecting rod from rotating with the platform, which would cause the bidirectional screw to rotate and affect the clamping block's grip on the material. This improves the stability of the material during rotation.

[0008] Preferably, the bottom of the testing chamber is also equipped with an electric heating block II. This feature, combined with the rotation of the platform, can further improve the heating efficiency and uniformity, thereby further improving the accuracy of the heat resistance test.

[0009] This invention also includes other components that enable the normal operation of a PFA heat resistance testing device, such as the control components for the stepper motor and the control components for the electric heating block, which are all conventional technologies in the field. Furthermore, devices or components not specified in this invention, such as the electric heating block, the bidirectional screw, the knob, and the activated carbon layer, all employ conventional technologies and equipment in the field.

[0010] Working principle: When in use, open the chamber door, place the material on the platform, turn the knob to make the two clamping blocks move towards each other and clamp the material, close the chamber door, and the electric heating block heats up. The stepper motor starts and drives the platform to rotate, so that the material is heated evenly, achieving efficient and accurate heat resistance testing. The odorous gas generated during the testing process first enters the filter for internal filtration and then is discharged through the exhaust pipe.

[0011] The utility model discloses an advantageous effect: simple and reasonable structure, convenient to use, clamping effect is stable, and material is evenly heated, realizes efficient, accurate heat resistance detection, and the gas with peculiar smell produced in the detection process first enters the filter and filters inwards, then is discharged through the exhaust pipe. BRIEF DESCRIPTION OF DRAWINGS

[0012] The utility model is further described below in combination with the drawings and embodiments.

[0013] Figure 1 It is the structure schematic diagram of a PFA heat resistance detection equipment in the utility model embodiment;

[0014] Figure 2 It is Figure 1 The structure schematic diagram of the box door after opening;

[0015] Figure 3 It is Figure 2 The top view of the object table;

[0016] Figure 4 It is Figure 3 The partial sectional view of the utility model;

[0017] Figure 5 It is Figure 3 The state diagram of the clamping block clamping material;

[0018] Figure 6 It is Figure 3 The sectional view of A in the utility model;

[0019] Figure 7 It is Figure 6 The state diagram of the limiting block two in the limiting groove.

[0020] In the drawing: 1, detection box;2, box door;3, observation window;4, filter box;5, exhaust pipe;6, electric heating block one;7, clamping block;8, object table;9, step motor;10, knob;11, recess;12, bidirectional screw;13, conical gear two;14, conical gear one;15, transmission cavity;16, material;17, limiting block two;18, limiting groove;19, connecting rod;20, sliding slot;21, limiting block one. DETAILED DESCRIPTION

[0021] The utility model is further described below in combination with the drawings and embodiments in the utility model embodiment, and the description at here is only used to explain the utility model, but does not as the limitation to the utility model. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor, any modification, equivalent replacement, improvement etc. that are done, should include in the protection scope of the utility model. EMBODIMENT

[0022] As Figures 1-7 The utility model provides a PFA heat resistance detection equipment, including detection case 1, be equipped with electric heating block one 6 on the inner wall of detection case 1, and the top of detection case 1 is equipped with exhaust pipe 5, be equipped with the stand 8 in detection case 1, the center fixedly connected with vertical pivot of the bottom of stand 8, vertical pivot is connected with step motor 9, the top of stand 8 is equipped with clamping piece, clamping piece includes two -way screw rod 12 and two clamping blocks 7, be equipped with recess 11 on stand 8, recess 11 passes through the center of stand 8, two -way screw rod 12 is located in recess 11, and the both ends of two -way screw rod 12 are connected with the both ends of recess 11 through bearing rotation respectively, and the positive thread and the reverse thread of two -way screw rod 12 are respectively screwed with sliding block, the bottom of sliding block is matched with recess 11 and is slidably arranged in recess 11, and the top of two sliding blocks is fixedly connected with corresponding clamping block 7, the two -way screw rod 12 is fixed with bevel gear one 14, bevel gear one 14 is engaged with bevel gear two 13, bevel gear two 13 is connected with the rotation bar, the rotation bar passes through stand 8 and is connected with knob 10 after, the transmission cavity 15 is equipped in stand 8, and bevel gear one 14 and bevel gear two 13 are located in transmission cavity 15, do not affect the placement of material 16 on stand 8.

[0023] The detection case 1 is provided with an openable and closable box door 2, and the box door 2 is provided with a transparent observation window 3.

[0024] The exhaust pipe 5 is provided with a filter box 4, and the filter box 4 is provided with a filter layer.

[0025] The filter layer includes an activated carbon layer.

[0026] The one end of the rotating rod extends the placing table 8 and is provided with a containing cavity, the containing cavity is provided with a telescopic connecting rod 19, one end of the connecting rod 19 extends out of the containing cavity and is fixedly connected with the knob 10, the other end of the connecting rod 19 is always located in the containing cavity and is fixedly connected with the limiting block one 21, the side wall of the containing cavity corresponding to the limiting block one 21 is provided with a matched sliding groove 20, the limiting block one 21 is slidingly arranged in the sliding groove 20, the knob 10 is provided with the limiting block two 17 on the surface corresponding to the placing table 8, and the placing table 8 is provided with a plurality of limiting grooves 18 matched with the limiting block two 17. When the rotating rod needs to be rotated, the connecting rod 19 is pulled out, the limiting block two 17 is pulled out of the limiting groove 18 to release the limiting, the knob 10 is rotated, under the limiting action of the limiting block one 21 and the sliding groove 20, the rotating rod is synchronously rotated with the connecting rod 19, the conical gear two 13 is rotated, the conical gear one 14 is rotated by the conical gear two 13, so that the bidirectional screw rod 12 is rotated, the two clamping blocks 7 are moved towards or away from each other, and the clamping or loosening of the material 16 is realized. When the material 16 is clamped, the connecting rod 19 is pushed into the containing cavity, and the limiting block two 17 is arranged in the limiting groove 18 corresponding thereto, so that the connecting rod 19 is locked, and the rotating of the bidirectional screw rod 12 caused by the rotating of the connecting rod 19 when the placing table 8 is rotated is avoided, and the clamping of the material 16 by the clamping block 7 is affected. The stability of the material 16 during rotation is improved.

[0027] The bottom of the detection box is also provided with an electric heating block two. The rotation of the placing table can further improve the heating efficiency and the uniformity of heating, and further improve the accuracy of heat resistance detection.

[0028] In use, the box door 2 is opened, the material 16 is placed on the placing table 8, the knob 10 is rotated, the two clamping blocks 7 are moved towards each other, the material 16 is clamped, the box door 2 is closed, the electric heating block one 6 is heated, the stepping motor 9 is started to drive the placing table 8 to rotate, the material 16 is uniformly heated, efficient and accurate heat resistance detection is realized, and the gas with an odor generated in the detection process first enters the filter and is filtered inward, and then is discharged through the exhaust pipe 5.

[0029] The above has described the embodiments of the present application, the above description is exemplary, is not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A PFA heat resistance detection device, comprising a detection box, an electric heating block one is arranged on the inner wall of the detection box, and an exhaust pipe is arranged on the top of the detection box; characterized in that: The detection box is provided with a storage table, a vertical rotating shaft is fixedly connected to the center of the bottom of the storage table, a stepping motor is connected to the vertical rotating shaft, a clamping piece is arranged above the storage table, the clamping piece comprises a bidirectional screw rod and two clamping blocks, a groove is arranged on the storage table and passes through the center of the storage table, the bidirectional screw rod is arranged in the groove, the two ends of the bidirectional screw rod are rotatably connected to the two ends of the groove through bearings, a sliding block is threadedly connected to the forward thread and the reverse thread of the bidirectional screw rod respectively, the bottom of the sliding block is matched with the groove and is slidably arranged in the groove, the top of each sliding block is fixedly connected to the corresponding clamping block, a conical gear one is fixedly arranged on the bidirectional screw rod, the conical gear one is engaged with a conical gear two, the conical gear two is connected to a rotating rod, and the rotating rod penetrates through the storage table and is connected to a knob.

2. The PFA heat resistance testing apparatus according to claim 1, wherein: The detection box is provided with an openable and closable box door, and the box door is provided with a transparent observation window.

3. The PFA heat resistance testing apparatus according to claim 1, wherein: The exhaust pipe is provided with a filter box, and the filter box is provided with a filter layer.

4. The PFA heat resistance detection apparatus according to claim 3, characterized by: The filter layer comprises an activated carbon layer.

5. The PFA heat resistance testing apparatus according to claim 1, wherein: One end of the rotating rod extending out of the storage table is provided with a containing cavity, the containing cavity is provided with a telescopic connecting rod, one end of the connecting rod extending out of the containing cavity is fixedly connected to the knob, the other end of the connecting rod is always located in the containing cavity and is fixedly connected to a limiting block one, a matching sliding groove is arranged on the side wall of the containing cavity corresponding to the limiting block one, the limiting block one is slidably arranged in the sliding groove, a limiting block two is arranged on the surface of the storage table corresponding to the knob, and the storage table is provided with a limiting groove matched with the limiting block two.

6. The PFA heat resistance testing apparatus according to claim 1, wherein: The bottom of the detection box is also provided with an electric heating block two.

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