Pressure testing die

Abstract

The utility model discloses a pressure test die, comprising a placing part comprising a first cavity and a second cavity, the placing part comprises a first opening, the first opening is communicated with the first cavity, the first cavity comprises a first cavity wall and a first bottom wall, the first cavity wall is connected with the first bottom wall, and the first bottom wall is used for placing an external test piece; the first bottom wall comprises a second opening, an external test piece covers the second opening, and the second cavity extends from the second opening and is communicated with the second opening; the water injection part comprises a first part and a second part, the first part is arranged in the first cavity, the first part is connected with the first cavity wall, the first part is used for pressing an external test piece, the first part comprises a first through hole and a water injection cavity which are sequentially arranged in the first direction and communicate with each other, and the water injection cavity and the second cavity are oppositely arranged in the first direction; the second part is communicated with the first part and used for being connected with an external water pipe. According to the utility model, the pressure-resistant grade test of the conveyer belt can be rapidly realized.

Description

Technical Field

[0001] The utility model relates to the field of pressure test molds, and particularly relates to a pressure test mold. Background Art

[0002] For a conveyor belt for transporting materials, during its production inspection process, it is necessary to measure whether the conveyor belt has good sealing performance and the pressure degree that conveyor belts of different specifications can withstand. However, there is currently no test device that can quickly obtain the pressure resistance levels of different types of conveyor belts in a laboratory. Therefore, when customers face conveyor belts of different types, different cover rubber thicknesses, and different reinforcing layers, they can only randomly select a conveyor belt product and verify and collect data during actual use. This method not only wastes resources and is costly but also consumes time. Summary of the Utility Model

[0003] The purpose of the utility model is to solve the problem that the existing test device cannot quickly obtain the pressure resistance levels of different types of conveyor belts in a laboratory. The utility model provides a pressure test mold that can quickly realize the pressure resistance level test of conveyor belts.

[0004] To solve the above technical problems, an embodiment of the utility model discloses a pressure test mold, including:

[0005] A placement part, the placement part includes a first cavity and a second cavity that are sequentially arranged and communicated along a first direction, the placement part includes a first opening, the first opening is communicated with the first cavity, the first cavity includes a first cavity wall and a first bottom wall, the first cavity wall is connected to the first bottom wall, the first bottom wall is used for placing an external test piece, the first bottom wall includes a second opening, the external test piece covers the second opening, and the second cavity extends from the second opening and is communicated with the second opening;

[0006] A water injection part, the water injection part includes a first part and a second part, the first part is placed in the first cavity, the first part is connected to the first cavity wall, the first part is used for pressing the external test piece, the first part includes a first through hole and a water injection cavity that are sequentially arranged and communicated along the first direction, along the first direction, the water injection cavity is arranged opposite to the second cavity, and the second part is communicated with the first part, and the second part is used for connecting to an external water pipe.

[0007] With the above technical solution, before the pressure test, the test piece (such as a conveyor belt) is placed on the first bottom wall, and then the first part is placed in the first cavity so that the first part presses against the test piece (such as a conveyor belt). At this time, the first bottom wall provides an upward supporting force to the test piece (such as a conveyor belt) in the first direction, and the first part provides a downward pressure to the test piece (such as a conveyor belt) in the first direction, thereby fixing the test piece (such as a conveyor belt) in the first direction.

[0008] The working principle of the pressure test die is as follows: Water in the external water pipe enters the water injection cavity through the second part until the water injection cavity is full. Since the test piece (such as a conveyor belt) covers the second opening, that is, covers the second cavity, and the water injection cavity is disposed opposite to the second cavity, the water in the water injection cavity can generate a certain force acting on the test piece (such as a conveyor belt). Subsequently, by changing the pressure of the water in the external water pipe (0 - 10 MPa), the pressure applied to the test piece (such as a conveyor belt) is changed. When the maximum pressure that the test piece (such as a conveyor belt) can withstand is reached, the test piece (such as a conveyor belt) will rupture, and the maximum pressure value that the test piece (such as a conveyor belt) can withstand can be obtained. Subsequently, the water flows into the second cavity.

[0009] According to another specific embodiment of the present invention, the second cavity of the placing part includes a second bottom wall, and the second bottom wall includes a second through hole. Along the first direction, the second through hole is disposed opposite to the second opening.

[0010] With the above technical solution, at the moment when the test piece (such as a conveyor belt) ruptures, the impact force of the water (such as a water column) ejected from the rupture of the test piece (such as a conveyor belt) is very large at this time. The second bottom wall can block the ejected water column to prevent the impact force of the water column from damaging the operator and the pressure test die. In addition, the water ejected from the rupture of the test piece (such as a conveyor belt) can flow out through the second through hole.

[0011] According to another specific embodiment of the present invention, the placing part includes a clamping part. Along the first direction, the clamping part is disposed at one end of the placing part. The clamping part includes a third through hole, and the third through hole penetrates through the clamping part. The third through hole is communicated with the second through hole.

[0012] With the above technical solution, the placing part can be fixed by the clamping part for subsequent connection of the water injection part and the placing part. In addition, the water ejected from the rupture of the test piece (such as a conveyor belt) flows out of the clamping part through the second through hole and the third through hole.

[0013] According to another specific embodiment of the present invention, the cross-section of the second opening is circular, and the diameter of the second opening is 95 - 110 mm.

[0014] With the above technical solution, if the diameter of the second opening is small, the pressure of water acts on the test piece (such as a conveyor belt), and the test piece (such as a conveyor belt) is prone to deformation at this time, resulting in a large error in the experimental data.

[0015] If the diameter of the second opening is large, the length of the first bottom wall becomes smaller, and the contact area between the first bottom wall and the test piece (such as a conveyor belt) becomes smaller. When the water pressure is large, the test piece (such as a conveyor belt) is easily washed out of the second opening by the high-pressure water, resulting in the failure of the experiment.

[0016] According to another specific embodiment of the present invention, the cross-section of the second through hole is circular, and the diameter of the second through hole is 40-60 mm.

[0017] With the above technical solution, if the diameter of the second through hole is small, the water flushing out from the rupture of the test piece (such as a conveyor belt) will form a high-pressure water column, causing damage to the operator and the pressure test mold.

[0018] If the diameter of the second through hole is large, the length of the second bottom wall becomes smaller, and it cannot play a role in blocking the flushing water column.

[0019] According to another specific embodiment of the present invention, the clamping portion is an M42 bolt.

[0020] According to another specific embodiment of the present invention, the first part includes an outer wall, the outer wall includes a third part and a fourth part, the third part is a threaded structure, the fourth part is a non-threaded structure, along the first direction, the fourth part is arranged below the outer wall, the first cavity wall includes a first inner wall, and the third part is threadedly connected to the first inner wall.

[0021] With the above technical solution, after the third part is connected to the first inner wall, the first part of the water injection part presses the test piece (such as a conveyor belt), and the test piece (such as a conveyor belt) is deformed by extrusion and fills into the thread of the first inner wall to form a seal. At this time, the water entering the water injection part can fully act on the test piece (such as a conveyor belt) without overflowing from the water injection part.

[0022] According to another specific embodiment of the present invention, the first cavity is a cylindrical structure, the second cavity is a cylindrical structure, and the first part is a cylindrical structure.

[0023] According to another specific embodiment of the present invention, along the first direction, a chamfer is provided at one end of the fourth part in contact with the external test piece.

[0024] With the above technical solution, after the test piece (such as a conveyor belt) is deformed under extrusion, it fills into the thread at the first inner wall at the chamfer to form a seal. At this time, the water entering the water injection part can fully act on the test piece (such as a conveyor belt) without overflowing from the water injection part. If there is no chamfer, it is not easy for the test piece (such as a conveyor belt) to deform upward under extrusion and fill into the thread at the first inner wall.

[0025] According to another specific embodiment of the present invention, the second part includes a first adapter and a second adapter arranged along the first direction. The first adapter is welded at the first through hole. The first adapter includes a fourth through hole, and the fourth through hole communicates with the first through hole. The second adapter includes a fifth through hole. Along the first direction, one end of the second adapter is connected to the first adapter, and the other end of the second adapter is connected to an external water pipe. The fifth through hole communicates with the fourth through hole.

[0026] With the above technical solution, since the radius of the first through hole is fixed and the radius of the external water pipe is variable, by providing the first adapter and the second adapter, it can be matched with the radius of the external water pipe, so that the external water pipe is connected to the water injection part. Description of the Drawings

[0027] Figure 1 Showing a cross-sectional view of the pressure test mold according to an embodiment of the present invention.

[0028] Figure 2 Showing a cross-sectional view of the placement part according to an embodiment of the present invention.

[0029] Figure 3a Showing a cross-sectional view of the water injection part according to an embodiment of the present invention.

[0030] Figure 3b Showing an embodiment of the present invention Figure 3a Partial enlarged view of area A.

[0031] Figure 4 Showing a schematic connection diagram of the pressure test mold and the water pipe according to an embodiment of the present invention.

[0032] Figure 5a Showing a schematic diagram of the test piece according to an embodiment of the present invention.

[0033] Figure 5b Showing a schematic diagram of the test piece breaking according to an embodiment of the present invention.

[0034] Description of the Reference Numerals

[0035] Placement part 100;

[0036] The first cavity 110; the first cavity wall 111; the first inner wall 1111; the first bottom wall 112; the second opening 1121;

[0037] The second cavity 120; the second bottom wall 121; the second through hole 1211;

[0038] The first opening 130;

[0039] The clamping part 140;

[0040] The water injection part 200;

[0041] The first part 210; the first through hole 211; the water injection cavity 212;

[0042] The outer wall 213; the third part 2131; the fourth part 2132; the chamfer 21321;

[0043] The second part 220; the first adapter 221; the second adapter 222;

[0044] The test piece 300; the rupture point 310;

[0045] The water pipe 400. Detailed implementation mode

[0046] ]>The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. Although the description of the present utility model will be introduced in conjunction with the preferred embodiments, this does not mean that the features of this utility model are limited to this implementation manner. On the contrary, the purpose of introducing the utility model in conjunction with the implementation manner is to cover other alternatives or modifications that may be extended based on the claims of the present utility model. In order to provide a deep understanding of the present utility model, many specific details will be included in the following description. The present utility model can also be implemented without these details. In addition, in order to avoid confusing or obscuring the key points of the present utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0047] It should be noted that in this specification, similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0048] In the description of this embodiment, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0049] The terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0050] In the description of this embodiment, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific situations.

[0051] To make the purpose, technical solution and advantages of the present utility model clearer, the following will further describe the embodiments of the present utility model in detail with reference to the drawings.

[0052] Reference Figure 1 and Figure 2 , the present application provides a pressure test mold, and the pressure test mold includes a placement part 100 and a water injection part 200. The placement part 100 includes a first cavity 110 and a second cavity 120 that are sequentially arranged and communicated along a first direction ( Figure 2 the X direction in

[0053] Reference Figures 2 to 4, the water injection part 200 includes a first part 210 and a second part 220. The first part 210 is a cylindrical structure. The first part 210 is placed in the first cavity 110 and connected to the first cavity wall 111. The first part 210 is used to press and connect the external test piece 300. The first part 210 includes a first through hole 211 and a water injection cavity 212 that are arranged in sequence and communicated along the first direction ( Figure 3a the X direction in Figure 3a ). The water injection cavity 212 is a cylindrical structure. Along the first direction, the water injection cavity 212 is arranged opposite to the second cavity 120. The second part 220 is communicated with the first part 210, and the second part 220 is used to connect with the water pipe 400.

[0054] With the above technical solution, before the pressure test, the test piece 300 (such as a conveyor belt) is placed on the first bottom wall 112, and then the first part 210 is placed in the first cavity 110 so that the first part 210 presses and connects the test piece 300 (such as a conveyor belt). At this time, the first bottom wall 112 gives an upward supporting force to the test piece 300 (such as a conveyor belt) in the first direction, and the first part 210 gives a downward pressure to the test piece 300 (such as a conveyor belt) in the first direction, so as to fix the test piece 300 (such as a conveyor belt) in the first direction.

[0055] The working principle of the pressure test mold is as follows: The water in the water pipe 400 enters the water injection cavity 212 through the second part 220 until the water injection cavity 212 is full. Since the test piece 300 (such as a conveyor belt) covers the second opening 1121, that is, covers the second cavity 120, and the water injection cavity 212 is arranged opposite to the second cavity 120, the water in the water injection cavity 212 can generate a certain force acting on the test piece 300 (such as a conveyor belt). As Figure 5a shown, the test piece 300 (such as a conveyor belt) is circular. Subsequently, by changing the pressure of the water in the water pipe 400 (0 - 10 MPa) to change the pressure on the test piece 300 (such as a conveyor belt), when the maximum pressure that the test piece 300 (such as a conveyor belt) can bear is reached, the test piece 300 (such as a conveyor belt) will break (as Figure 5b shown), and the maximum pressure value that the test piece 300 (such as a conveyor belt) can bear can be obtained. The rupture point 310 is, for example, Figure 5b the rhombus shown in Figure 5b . Subsequently, the water flows into the second cavity 120.

[0056] The first cavity 110 and the first part 210 are cylindrical structures, so that the first cavity 110 and the first part 210 can be threadedly connected.

[0057] It should be noted that the shape of the rupture 310 is not specifically limited in the embodiments of the present application. For example, in other possible embodiments, the shape of the rupture 310 can be a pentagram, a triangle, etc., and the shape of the rupture 310 is determined by the experimental situation.

[0058] In some possible embodiments, referring to Figure 2 , the second cavity 120 of the placement part 100 includes a second bottom wall 121. The second bottom wall 121 includes a second through hole 1211. The cross-section of the second through hole 1211 is circular. Along the first direction ( Figure 2 the X direction in

[0059] ), the second through hole 1211 is disposed opposite to the second opening 1121.

[0060] In some possible embodiments, referring to Figure 2 , the placement part 100 includes a clamping part 140. The clamping part 140 is an M42 bolt. Along the first direction ( Figure 2 the X direction in

[0061] ), the clamping part 140 is disposed at one end of the placement part 100. The clamping part 140 includes a third through hole (not shown in the figure). The third through hole penetrates the clamping part 140, and the third through hole communicates with the second through hole 1211.

[0062] It should be noted that the bolt model of the clamping part 140 is not specifically limited in the embodiments of the present application. For example, in other possible embodiments, the bolt model of the clamping part 140 can be M46, M48, M50, etc.

[0063] In some possible embodiments, referring to Figure 2 , the diameter D1 of the second opening 1121 is 95 - 110 mm.

[0064] With the above technical solution, if the diameter of the second opening 1121 is small, the pressure of water acts on the test piece 300 (such as a conveyor belt). At this time, the test piece 300 (such as a conveyor belt) is prone to deformation, resulting in a large error in the experimental data.

[0065] If the diameter of the second opening 1121 is large, the length of the first bottom wall 112 becomes smaller, and the contact area between the first bottom wall 112 and the test piece 300 (such as a conveyor belt) becomes smaller. When the water pressure is large, the test piece 300 (such as a conveyor belt) is easily washed out from the second opening 1121 by the high-pressure water, resulting in the failure of the experiment.

[0066] In some possible implementation manners, referring to Figure 2 , the diameter D2 of the second through hole 1211 is 40 - 60 mm.

[0067] With the above technical solution, if the diameter of the second through hole 1211 is small, the water flushing out from the rupture of the test piece 300 (such as a conveyor belt) will form a high-pressure water column, causing damage to the operator and the pressure test mold.

[0068] If the diameter of the second through hole 1211 is large, the length of the second bottom wall 121 becomes smaller, and it cannot play a role in blocking the flushing water column.

[0069] In some possible implementation manners, referring to Figure 2 and Figure 3a , the first part 210 of the water injection part 200 includes an outer wall 213. The outer wall 213 includes a third part 2131 and a fourth part 2132. The third part 2131 is a threaded structure, and the fourth part 2132 is a non-threaded structure. Along the first direction ( Figure 3a the X direction in

[0070] ), the fourth part 2132 is disposed below the outer wall 213. The first cavity wall 111 includes a first inner wall 1111, and the third part 2131 is threadedly connected to the first inner wall 1111.

[0071] With the above technical solution, after the third part 2131 is connected to the first inner wall 1111, the first part 210 of the water injection part 200 presses against the test piece 300 (such as a conveyor belt). The test piece 300 (such as a conveyor belt) is deformed by extrusion and fills into the thread of the first inner wall 1111 to form a seal. At this time, the water entering the water injection part 200 can fully act on the test piece 300 (such as a conveyor belt) without overflowing from the water injection part 200. Figures 3a to 4 In some possible implementation manners, referring to Figure 3a the X direction in

[0072] With the above technical solution, after the test piece 300 (such as a conveyor belt) is deformed under extrusion, it is filled into the thread of the first inner wall 1111 at the chamfer 21321 to form a seal. At this time, the water entering the water injection part 200 can fully act on the test piece 300 (such as a conveyor belt) without overflowing from the water injection part 200. If there is no chamfer 21321, it is not easy for the test piece 300 (such as a conveyor belt) to deform upward under extrusion and fill into the thread of the first inner wall 1111.

[0073] In some possible implementation manners, referring to Figure 3a and Figure 4 , the second part 220 includes a first adapter 221 and a second adapter 222 arranged along the first direction ( Figure 3a the X direction in ). The first adapter 221 is welded to the first through hole 211. The first adapter 221 includes a fourth through hole (not shown in the figure), and the fourth through hole communicates with the first through hole 211. The second adapter 222 includes a fifth through hole (not shown in the figure). Along the first direction, one end of the second adapter 222 is connected to the first adapter 221, and the other end of the second adapter 222 is connected to the water pipe 400. The fifth through hole communicates with the fourth through hole.

[0074] With the above technical solution, since the radius of the first through hole 211 is fixed and unchanged, while the radius of the water pipe 400 is variable, by providing the first adapter 221 and the second adapter 222, the radius of the water pipe 400 can be matched, so that the water pipe 400 is connected to the water injection part 200.

[0075] Although the present invention has been illustrated and described by referring to some preferred embodiments of the present invention, those of ordinary skill in the art should understand that the above content is a further detailed description of the present invention in combination with specific implementation manners, and it cannot be determined that the specific implementation of the present invention is only limited to these descriptions. Those skilled in the art can make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A pressure test mold, characterized in that, The pressure test die includes: A placement part, the placement part includes a first cavity and a second cavity that are arranged in sequence and communicated along a first direction, the placement part includes a first opening, the first opening is communicated with the first cavity, the first cavity includes a first cavity wall and a first bottom wall, the first cavity wall is connected to the first bottom wall, the first bottom wall is used for placing an external test piece, the first bottom wall includes a second opening, the external test piece covers the second opening, and the second cavity extends from the second opening and is communicated with the second opening; A water injection part, the water injection part includes a first part and a second part, the first part is placed in the first cavity, the first part is connected to the first cavity wall, the first part is used for pressing the external test piece, the first part includes a first through hole and a water injection cavity that are arranged in sequence and communicated along the first direction, along the first direction, the water injection cavity is arranged opposite to the second cavity, the second part is communicated with the first part, and the second part is used for connecting to an external water pipe.

2. The pressure test mold according to claim 1, wherein The second cavity of the placement part includes a second bottom wall, the second bottom wall includes a second through hole, and along the first direction, the second through hole is arranged opposite to the second opening.

3. The pressure test die according to claim 2, wherein The placement part includes a clamping part, along the first direction, the clamping part is arranged at one end of the placement part, the clamping part includes a third through hole, the third through hole penetrates through the clamping part, and the third through hole is communicated with the second through hole.

4. The pressure test die according to claim 1, characterized in that, The cross section of the second opening is circular, and the diameter of the second opening is 95 - 110 mm.

5. The pressure test die according to claim 2, wherein, The cross section of the second through hole is circular, and the diameter of the second through hole is 40 - 60 mm.

6. The pressure test die according to claim 3, wherein, The clamping part is an M42 bolt.

7. The pressure test die according to claim 1, wherein The first part includes an outer wall, the outer wall includes a third part and a fourth part, the third part is a threaded structure, the fourth part is a non-threaded structure, along the first direction, the fourth part is arranged below the outer wall, the first cavity wall includes a first inner wall, and the third part is threadedly connected to the first inner wall.

8. The pressure test die according to claim 1, wherein The first cavity is a cylindrical structure, the second cavity is a cylindrical structure, and the first part is a cylindrical structure.

9. The pressure test die according to claim 7, wherein, Along the first direction, a chamfer is provided at one end of the fourth part that abuts against the external test piece.

10. The pressure test mold according to claim 1, wherein, The second part includes a first adapter and a second adapter that are arranged along the first direction, the first adapter is welded at the first through hole, the first adapter includes a fourth through hole, the fourth through hole is communicated with the first through hole, the second adapter includes a fifth through hole, along the first direction, one end of the second adapter is connected to the first adapter, the other end of the second adapter is connected to an external water pipe, and the fifth through hole is communicated with the fourth through hole.

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