Device for testing water vapor permeability of polyurethane foam

Abstract

The utility model provides a polyurethane foam water vapor transmission rate testing device, belongs to the technical field of polyurethane foam testing, and aims to solve the problems that according to an existing polyurethane foam water vapor transmission rate testing device, manual sealing grease smearing is tedious, the thickness is prone to being uneven, and the testing efficiency is high. And a plurality of groups of bolts need to be used for fixing when the gland is mounted, so that the gland dismounting efficiency is influenced by screwing the plurality of groups of bolts. Comprising a mounting base; the moisture permeable cup is fixedly mounted in the mounting seat; the sample is arranged at the upper part of the mounting seat; the upper gland is arranged at the upper part of the mounting seat; the extrusion ring is connected to the interior of the mounting seat in a sliding manner; the mounting frame is arranged at the bottom of the extrusion ring; the sealing assembly is arranged in the mounting seat; and the fixing assembly is arranged in the mounting frame. The utility model has the advantages of quick sealing, convenience in disassembly and assembly, simplicity in operation and the like.

Description

TECHNICAL FIELD

[0001] The utility model belongs to polyurethane foam testing technical field, more specifically, it is especially related to a kind of polyurethane foam water vapor permeability testing device. BACKGROUND

[0002] Polyurethane foam, with its excellent thermal insulation effect, light weight, high specific strength, easy construction and other characteristics, is widely used in the field of refrigerator, freezer body insulation, cold storage, refrigerated truck and other thermal insulation materials, as well as building, storage tank and pipeline insulation materials. In order to evaluate the water vapor barrier performance of polyurethane foam in different environments, a polyurethane foam water vapor permeability testing device is needed to determine the water vapor permeability. The existing polyurethane foam water vapor permeability testing device mainly consists of a test box, a moisture permeable cup and a dryer. The test box provides the required temperature and humidity environment for the test. The cut polyurethane foam sample is installed on the upper part of the moisture permeable cup, and the sample is fixed on the upper part of the moisture permeable cup by pressing the lid and screwing the bolts. The dryer prevents the influence of external moisture on the desiccant.

[0003] The existing application number CN202022566366.9 discloses a water vapor permeability tester, which comprises a shell, a water tank is fixed on one side of the shell, an installation frame is arranged below the water tank, a heating plate is installed at the bottom of the shell, a transport tank is arranged above the heating plate, one end of the transport tank penetrates through the side wall of the shell and is connected with the water tank through a liquid inlet, the other end is connected with a liquid outlet pipe below, and a screw rod is rotatably connected in the transport tank. The power supply port is connected with the power supply, the heating plate is powered and heated, the sample to be detected is fixed on the upper end of the circular disc through the fixing device, the screw rod is driven to rotate by the first motor, the water in the water tank enters the transport tank through the liquid inlet, and then slowly drips on the heating plate from the liquid outlet pipe at the lower end of the transport tank. Since the water is dripped on the heating plate, the water can be quickly evaporated, and the steam permeation test of the sample to be detected is carried out through the air inlet pipe, so that the steam permeability test efficiency of the sample to be detected is accelerated.

[0004] Based on the above, the existing polyurethane foam water vapor permeability testing device needs to apply sealing grease on the upper part of the moisture permeable cup in advance when installing the cut polyurethane foam sample on the upper part of the moisture permeable cup, in order to ensure the sealing performance of the sample and prevent water vapor from penetrating from the non-test area, thereby affecting the accuracy of the test results. Manual application is relatively cumbersome, and uneven thickness may occur, affecting the sealing performance. Moreover, multiple bolts are needed to fix the pressing cap when installing the pressing cap, which affects the efficiency of disassembling the pressing cap. UTILITY MODEL CONTENTS

[0005] In order to solve the above technical problems, the utility model provides a kind of polyurethane foam water vapor permeability testing device, to solve the polyurethane foam water vapor permeability testing device of existing, when cutting good polyurethane foam sample is installed on the upper portion of moisture permeable cup, need to smear sealing grease in advance on the upper portion of moisture permeable cup, to ensure the sealing property of sample, prevent water vapor from non-test area permeation, to affect the accuracy of test result, manual smearing is more cumbersome, and uneven thickness condition is prone to occur, affect sealing property, and when installing gland, need to be fixed by multiple bolts, and the efficiency of disassembling gland is affected by multiple bolts.

[0006] The purpose and function of the polyurethane foam water vapor permeability testing device are achieved by the following specific technical means:

[0007] A kind of polyurethane foam water vapor permeability testing device, including mounting seat;

[0008] Moisture permeable cup, the moisture permeable cup is fixedly installed in mounting seat interior;

[0009] Sample, the sample is set on the upper portion of mounting seat;

[0010] Upper gland, the upper gland is set on the upper portion of mounting seat;

[0011] Extrusion ring, the extrusion ring is slidably connected in mounting seat interior;

[0012] Mounting frame, the mounting frame is set in extrusion ring bottom;

[0013] Sealing assembly, the sealing assembly is set in mounting seat interior;

[0014] Fixed component, the fixed component is set in mounting frame interior.

[0015] Further, the sealing assembly includes:

[0016] Storage tank, the storage tank is opened in mounting seat interior, storage tank is slidably connected in extrusion ring outside, and storage tank stores sealing grease;

[0017] Guide rod, the guide rod is provided with multiple groups, and multiple guide rods are fixedly installed in storage tank interior, and multiple guide rods are slidably connected in extrusion ring interior.

[0018] Further, the sealing assembly further includes:

[0019] Sealing groove, the sealing groove is opened in the upper portion of mounting seat;

[0020] Through groove, the through groove is opened in mounting seat interior, and the through groove is communicated together with sealing groove and storage tank.

[0021] Further, the sealing assembly further comprises:

[0022] The mounting clamping table is arranged on the upper part of the mounting base.

[0023] The sealing rubber ring is fixedly arranged on the bottom of the upper pressing cover.

[0024] Further, the fixing assembly comprises:

[0025] The driving screw is threadedly connected to the middle part of the mounting frame.

[0026] The knob is fixedly arranged on the end of the driving screw.

[0027] The transmission disc is rotationally connected to the top end of the driving screw.

[0028] Further, the fixing assembly further comprises:

[0029] The sliding rods are arranged in four groups, and the four groups of sliding rods are slidingly connected to the inside of the fixing clamps.

[0030] The fixing clamps are arranged in four groups, and the four groups of fixing clamps are fixedly arranged on the top ends of the four groups of sliding rods.

[0031] The support frames are arranged in four groups, and the four groups of support frames are fixedly arranged on the bottoms of the four groups of fixing clamps.

[0032] Compared with the prior art, the utility model has the advantages of:

[0033] Firstly, the utility model has a sealing assembly, the sealing grease in the storage groove is rapidly filled into the sealing groove through the through groove by extruding the ring, the sealing grease is filled between the sample and the mounting clamping table in the sealing groove, the sealing grease application efficiency is greatly improved, the sealing grease is more uniformly filled, and the sealing effect is improved.

[0034] Secondly, the utility model has a fixing assembly, the mounting base and the upper pressing cover are quickly clamped by moving the transmission disc and the fixing clamp by rotating the knob, the mounting base and the upper pressing cover are greatly improved in dismounting efficiency, the sealing grease is filled by moving the extrusion ring at the same time of clamping, the step of pressing the extrusion ring is reduced, and the operation efficiency is improved.

[0035] The utility model has the advantages of rapid sealing, convenient dismounting, simple operation and the like, greatly improves the sealing grease application efficiency, makes the sealing grease more uniformly filled, greatly improves the dismounting efficiency of the mounting base and the upper pressing cover, is convenient for rapid dismounting, testing or sample replacement, and effectively improves the sample testing efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is the main body structure schematic diagram of the utility model.

[0037] Figure 2 is the mounting seat structure schematic diagram of the utility model.

[0038] Figure 3 is the permeable cup structure schematic diagram of the utility model.

[0039] Figure 4 is the upper gland structure schematic diagram of the utility model.

[0040] Figure 5 is the mounting rack structure schematic diagram of the utility model.

[0041] In the drawing, the corresponding relationship of component name and drawing number is as follows:

[0042] 1, mounting seat; 101, mounting card station; 102, sealing groove; 103, storage groove; 104, guide rod; 105, through groove; 2, permeable cup; 3, test sample; 4, upper gland; 401, sealing rubber ring; 5, extrusion ring; 6, mounting rack; 601, drive screw; 602, knob; 7, transmission disc; 8, fixed clamp; 801, sliding rod; 9, support frame. Specific implementation

[0043] The implementation of the utility model will be described in further detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

[0044] Example one:

[0045] As shown in the accompanying drawings: Figure 1 to the accompanying drawings: Figure 5 As shown in the accompanying drawings:

[0046] The utility model provides a kind of polyurethane foam water vapor permeability testing device, including mounting seat 1;

[0047] Permeable cup 2, permeable cup 2 is fixedly installed in mounting seat 1 inside;

[0048] Test sample 3, test sample 3 is set in mounting seat 1 upper portion;

[0049] Upper gland 4, upper gland 4 is set in mounting seat 1 upper portion;

[0050] Extrusion ring 5, extrusion ring 5 is slidably connected in mounting seat 1 inside;

[0051] Mounting rack 6, mounting rack 6 is set in extrusion ring 5 bottom;

[0052] Sealing assembly, sealing assembly is set in mounting seat 1 inside.

[0053] The sealing assembly comprises:

[0054] The storage groove 103 is arranged inside the mounting base 1 and is slidably connected to the outside of the extrusion ring 5, and the storage groove 103 stores the sealing grease.

[0055] The guide rods 104 are arranged in multiple groups, are fixedly installed inside the storage groove 103, and are slidably connected to the inside of the extrusion ring 5. The guide rods 104 serve to press the extrusion ring 5, and the extrusion ring 5 is slidably connected to the inside of the storage groove 103. The guide rods 104 serve to guide the movement of the extrusion ring 5.

[0056] The sealing assembly further comprises:

[0057] The sealing groove 102 is arranged on the upper portion of the mounting base 1.

[0058] The through groove 105 is arranged inside the mounting base 1 and connects the sealing groove 102 and the storage groove 103. The through groove 105 serves to extrude the sealing grease in the storage groove 103 to the inside of the sealing groove 102 through the extrusion ring 5.

[0059] The sealing assembly further comprises:

[0060] The mounting clamping table 101 is arranged on the upper portion of the mounting base 1.

[0061] The sealing rubber ring 401 is fixedly installed on the bottom of the upper pressing cover 4. The sealing rubber ring 401 serves to facilitate the installation of the sample 3 into the mounting clamping table 101 and to enhance the sealing effect of the upper pressing cover 4.

[0062] The specific use and effects of the embodiment are as follows:

[0063] The sample 3 is placed into the mounting clamping table 101, and the upper pressing cover 4 is placed on the upper portion of the mounting base 1. The sealing rubber ring 401 enhances the sealing effect of the upper pressing cover 4, so that the upper pressing cover 4 and the mounting base 1 seal the sample 3.

[0064] The extrusion ring 5 is pressed and slidably connected to the inside of the storage groove 103. The guide rods 104 serve to guide the movement of the extrusion ring 5. The extrusion ring 5 moves to extrude the sealing grease in the storage groove 103, and the sealing grease is extruded into the inside of the sealing groove 102 through the through groove 105. The sealing grease fills the space between the sample 3 and the mounting clamping table 101 in the sealing groove 102, thereby enhancing the sealing effect.

[0065] Embodiment Two:

[0066] On the basis of Embodiment One, for example, Figures 1 to 5As shown, it also includes:

[0067] The fixing assembly is arranged inside the mounting frame 6.

[0068] The fixing assembly comprises:

[0069] The driving thread 601 is threadedly connected to the middle part of the mounting frame 6.

[0070] The knob 602 is fixedly installed at the end of the driving thread 601.

[0071] The transmission disc 7 is rotationally connected to the top end of the driving thread 601.

[0072] The fixing assembly further comprises:

[0073] The sliding rods 801 are arranged in four groups, and the four groups of sliding rods 801 are slidingly connected inside the fixing clamps 8.

[0074] The fixing clamps 8 are arranged in four groups, and the four groups of fixing clamps 8 are fixedly installed at the top ends of the four groups of sliding rods 801.

[0075] The support frames 9 are arranged in four groups, and the four groups of support frames 9 are fixedly installed at the bottom parts of the four groups of fixing clamps 8.

[0076] The specific use mode and effect of the embodiment are as follows:

[0077] When it is needed to quickly fix the mounting seat 1 and the upper cover 4, the fixing clamps 8 are pulled, the sliding rods 801 play a guiding role when moving in the fixing clamps 8, the fixing clamps 8 are unfolded, the mounting seat 1 is placed on the upper part of the transmission disc 7, the fixing clamps 8 are pushed to position the mounting seat 1 around, the knob 602 is twisted, the knob 602 rotates to drive the driving thread 601 to rotate, the driving thread 601 drives the transmission disc 7 to move through the thread, the transmission disc 7 moves to push the extrusion ring 5 to move to fill the sealing grease into the sealing groove 102, when the sealing grease fills the sealing groove 102, the pressure of the sealing groove 102 is increased, the extrusion ring 5 cannot move, at this time, the transmission disc 7 continues to move to clamp the mounting seat 1 and the upper cover 4.

[0078] In this paper, the following points need to be noted:

[0079] 1.The accompanying drawings are only related to the structure involved in the embodiments of the present disclosure, and other structures can be referred to the general design.

[0080] 2.In the case of no conflict, the embodiments and features in the embodiments of the present disclosure can be combined to obtain new embodiments.

[0081] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A polyurethane foam water vapor transmission rate testing apparatus, characterized by: The polyurethane foam water vapor permeability testing device includes a mounting seat (1), a moisture permeable cup (2) fixedly installed inside the mounting seat (1), a sample (3) arranged on the upper part of the mounting seat (1), an upper pressing cover (4) arranged on the upper part of the mounting seat (1), and an extrusion ring (5) slidingly connected inside the mounting seat (1). A mounting frame (6) is arranged at the bottom of the extrusion ring (5), a sealing assembly is arranged inside the mounting seat (1), a fixing assembly is arranged inside the mounting frame (6), a storage groove (103) is formed in the mounting seat (1) and slidingly connected to the outside of the extrusion ring (5), the storage groove (103) stores sealing grease, and a plurality of guide rods (104) are arranged, fixedly installed inside the storage groove (103), and slidingly connected inside the extrusion ring (5).

2. The polyurethane foam water vapor transmission rate test apparatus of claim 1, wherein: The sealing assembly further includes a sealing groove (102) and a through groove (105), the sealing groove (102) is formed in the upper part of the mounting seat (1), and the through groove (105) is formed in the mounting seat (1) and communicates the sealing groove (102) and the storage groove (103).

3. The polyurethane foam water vapor transmission rate test apparatus of claim 2, wherein: The sealing assembly further includes a mounting clamping table (101) and a sealing rubber ring (401), the mounting clamping table (101) is formed in the upper part of the mounting seat (1), and the sealing rubber ring (401) is fixedly installed at the bottom of the upper pressing cover (4).

4. The polyurethane foam water vapor transmission rate test apparatus of claim 1, wherein: The fixing assembly includes a driving thread (601), a knob (602), and a transmission disc (7), the driving thread (601) is threadedly connected to the middle part of the mounting frame (6), the knob (602) is fixedly installed at the end of the driving thread (601), and the transmission disc (7) is rotationally connected to the top end of the driving thread (601).

5. The polyurethane foam water vapor transmission rate test apparatus of claim 1, wherein: The fixing assembly further includes a sliding rod (801), a fixed clamp (8), and a support frame (9), the sliding rod (801) is provided with four groups, the four groups of sliding rods (801) are slidingly connected inside the fixed clamp (8), the fixed clamp (8) is provided with four groups, the four groups of fixed clamps (8) are fixedly installed at the top ends of the four groups of sliding rods (801), and the support frame (9) is provided with four groups, the four groups of support frames (9) are fixedly installed at the bottoms of the four groups of fixed clamps (8).

Images