Novel sand equivalent testing device

Abstract

The utility model relates to the technical field of sand equivalent test devices, and provides a novel sand equivalent test device, which comprises a pressurized watering can and a kettle cover in threaded connection with the top of the pressurized watering can, and the top of the kettle cover is fixedly connected with a kettle lifting handle. According to the utility model, the driving assembly is arranged to pressurize the interior of the pressurized water spraying kettle and the switch assembly for controlling the flow rate is additionally arranged, and the interior of the pressurized water spraying kettle is pressurized through the pressurized handle, so that the flushing fluid has certain pressure when flowing out, and a sample can be fully flushed in a test; soil particle impurities attached to the surface of the aggregate can be conveniently flushed by flushing fluid, so that the accuracy of a test result is ensured; the pressurizing watering can can be horizontally placed on a test bed, so that the pressurizing watering can is more convenient to use, and meanwhile, flushing fluid is more convenient to add; according to the utility model, a tester only needs to pressurize the pressurized sprinkling can and slowly press the switch assembly, so that the flushing fluid can be automatically sprayed out, the operation is very convenient, and the flushing of a sample is also facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of sand equivalent test devices, and specifically, to a novel sand equivalent test device. Background Art

[0002] The existing sand equivalent test device needs to be suspended about 92 - 120 cm above the test bench, and relies on the gravity of the flushing liquid itself to complete the flushing test, resulting in insufficient and unclean flushing of the test sample during the test, causing a relatively large error in the test result and affecting the accuracy of the test result. Therefore, a novel sand equivalent test device is needed. Summary of the Utility Model

[0003] To overcome the deficiencies of the prior art, the utility model provides a novel sand equivalent test device to solve the technical problems mentioned in the above background art.

[0004] The technical solution of the utility model is as follows: A novel sand equivalent test device includes a pressurized spray kettle, a kettle lid threadedly connected to the top of the pressurized spray kettle, a lifting kettle handle fixedly connected to the top of the kettle lid, and a driving component arranged at the top of the lifting kettle handle for pressurizing the flushing liquid in the pressurized spray kettle;

[0005] The driving component includes a pressurizing handle arranged at the top of the lifting kettle handle, a reciprocating rod fixedly connected to the bottom of the pressurizing handle, a pressure application cylinder fixedly connected to the bottom of the kettle lid, a piston fixedly connected to the bottom end of the reciprocating rod and slidably connected to the inside of the pressure application cylinder, a one - way intake pipe fixedly communicating with the inside of the pressure application cylinder arranged at the top of the lifting kettle handle, and a one - way exhaust pipe fixedly communicating with the peripheral surface of the pressure application cylinder.

[0006] Preferably, a impurity - blocking component for preventing impurities in the air from entering the pressurized spray kettle along with the air flow is arranged at the top end of the one - way intake pipe. The impurity - blocking component includes a mounting collar threadedly connected to the top end of the one - way intake pipe, and a filter screen fixedly connected to the inside of the mounting collar.

[0007] Preferably, two limiting rings are fixedly connected to the inner wall of the pressure application cylinder from top to bottom, and the piston is arranged between the two limiting rings.

[0008] Preferably, a plastic hose fixedly connected to the inner wall of the lifting kettle handle is arranged inside the pressurized spray kettle, and a metal flushing pipe is arranged at one end of the plastic hose away from the lifting kettle handle.

[0009] Preferably, a switch component for controlling the flow rate of the flushing liquid is arranged between the plastic hose and the metal flushing pipe.

[0010] Preferably, the switch component includes a connecting pipe fixedly communicating with the plastic hose and the metal flushing pipe, and a water outlet hole is arranged inside the connecting pipe.

[0011] Preferably, a pressing handle is provided on the end face of the connecting pipe. One end of the pressing handle is fixedly connected with a flow control member. The flow control member is slidably sleeved inside the connecting pipe. A spring is sleeved on the outer wall of the flow control member. Two ends of the spring are respectively fixedly connected with the connecting pipe and the flow control member.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. The present utility model is equipped with a driving assembly to pressurize the pressurized spray kettle and adds a switch assembly for controlling the flow rate. By pressing the pressurizing handle, the pressurized spray kettle is pressurized, so that the flushing liquid flows out with a certain pressure, which is convenient for fully flushing the sample in the test, is conducive to flushing the soil particle impurities attached to the surface of the aggregate by the flushing liquid, makes the sample fully suspended, and ensures the accuracy of the test results.

[0014] 2. The pressurized spray kettle of the present utility model can be placed flat on the test bench, making the use of the pressurized spray kettle more convenient and the addition of the flushing liquid more convenient.

[0015] 3. After the tester pressurizes the pressurized spray kettle, the switch assembly is slowly pressed down, and the flushing liquid will automatically spray out. The operation is very convenient and is also conducive to flushing the sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0017] Figure 1 is a schematic three-dimensional structure diagram proposed by the present utility model;

[0018] Figure 2 is a schematic structure diagram of the pressure application cylinder proposed by the present utility model;

[0019] Figure 3 is proposed by the present utility model Figure 2 schematic diagram of a partial cross-sectional structure;

[0020] Figure 4 is a schematic diagram of a partial cross-sectional plane structure proposed by the present utility model.

[0021] In the figure: 1. Pressurized spray kettle; 2. Kettle lid; 3. Kettle lifting handle; 4. Driving assembly; 41. Pressurizing handle; 42. Reciprocating rod; 43. Pressure application cylinder; 44. Piston; 45. Limit ring; 46. One-way intake pipe; 461. Impurity blocking assembly; 4611. Installation sleeve ring; 4612. Filter screen; 47. One-way exhaust pipe; 5. Plastic hose; 6. Metal flushing pipe; 7. Switch assembly; 71. Pressing handle; 72. Flow control member; 73. Connecting pipe; 74. Water outlet hole; 75. Spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present utility model.

[0023] With the country's protection of environmental natural resources and the depletion of raw materials in the construction industry, more and more artificial sand is being developed and utilized in large quantities. As a test parameter for detecting impurities contained in various fine aggregates such as artificial sand, the sand equivalent test will become more and more important. Therefore, the accuracy of the test results and the simplicity and portability of the test process will become crucial.

[0024] The existing sand equivalent test device needs to be suspended about 92 - 120 cm above the test bench and relies on the gravity of the flushing liquid itself to complete the flushing test, resulting in insufficient and unclean flushing of the test sample during the test, causing a relatively large error in the test results and affecting the accuracy of the test results. Please refer to Figures 1 - 4 , the embodiment provides a new type of sand equivalent test device, including a pressurized spray kettle 1 and a kettle lid 2 threadedly connected to the top of the pressurized spray kettle 1. A handle 3 for lifting the kettle is fixedly connected to the top of the kettle lid 2. Open the kettle lid 2 and add the prepared flushing liquid into the pressurized spray kettle 1, and then tighten the kettle lid 2 on the top of the pressurized spray kettle 1.

[0025] Reference Figure 3As shown, the existing sand equivalent test device needs to be suspended about 92 - 120 cm above the test bench, and the flushing test is completed by the gravity of the flushing liquid itself. This results in insufficient and incomplete flushing of the test sample during the test, causing relatively large errors in the test results and affecting the accuracy of the test results. To improve the accuracy of the test results, the following settings are made specifically. At the top of the kettle handle 3, there is a driving component 4 for pressurizing the flushing liquid in the pressurized spray kettle 1. The driving component 4 includes a pressurizing handle 41 provided at the top of the kettle handle 3. The bottom of the pressurizing handle 41 is fixedly connected with a reciprocating rod 42. The bottom of the kettle lid 2 is fixedly connected with a pressure application cylinder 43. The bottom end of the reciprocating rod 42 is fixedly connected with a piston 44 that is slidably connected to the inside of the pressure application cylinder 43. The inner wall of the pressure application cylinder 43 is fixedly connected with two limiting rings 45 from top to bottom. The piston 44 is arranged between the two limiting rings 45 to limit the vertical movement range of the piston 44. At the top of the kettle handle 3, there is a one-way intake pipe 46 fixedly communicating with the inside of the pressure application cylinder 43. The peripheral surface of the pressure application cylinder 43 is fixedly communicated with a one-way exhaust pipe 47. When the pressurizing handle 41 is reciprocally pressed, when the reciprocating rod 42 moves upward, the one-way exhaust pipe 47 closes and the one-way intake pipe 46 opens. The one-way intake pipe 46 inhales the outside air into the pressure application cylinder 43. When the reciprocating rod 42 moves downward, the one-way exhaust pipe 47 opens and the one-way intake pipe 46 closes. The one-way exhaust pipe 47 discharges the inhaled outside air into the flushing liquid for pressurization until the pressurizing handle 41 cannot be pressed down any further. At this time, the flushing has a certain amount of pressure, and the flushing liquid is convenient for floating up the soil particle impurities attached to the surface of the aggregate during the flushing process, which can make the test process have an obvious improvement effect and ensure more accurate test results.

[0026] Reference Figure 2 As shown, at the top end of the one-way intake pipe 46, there is an impurity blocking component 461 for preventing impurities in the air from entering the pressurized spray kettle 1 along with the air flow. The impurity blocking component 461 includes a mounting collar 4611 threadedly connected to the top end of the one-way intake pipe 46. The inside of the mounting collar 4611 is fixedly connected with a filter screen 4612. Before the one-way intake pipe 46 inhales the outside air into the pressure application cylinder 43, the impurities in the gas are intercepted by the filter screen 4612 to prevent the phenomenon of impurity pollution of the flushing liquid. When it is necessary to clean the filter screen 4612, rotate the mounting collar 4611 to disassemble the filter screen 4612 from the top end of the one-way intake pipe 46. After cleaning, rotate the mounting collar 4611 again to install the filter screen 4612 at the top end of the one-way intake pipe 46.

[0027] Reference Figure 4As shown, during the test, factors such as incomplete rinsing of the sample and inaccurate control of the amount of rinsing liquid used have a series of impacts on the test results, causing many uncontrollable human errors and problems with non-standard testing. In order to control the flow rate of the rinsing liquid, the following settings are made. Inside the pressurized spray kettle 1, there is a plastic hose 5 fixedly connected to the inner wall of the kettle handle 3. One end of the plastic hose 5 away from the kettle handle 3 is provided with a metal rinsing tube 6. Between the plastic hose 5 and the metal rinsing tube 6, there is a switch assembly 7 for controlling the flow rate of the rinsing liquid. The switch assembly 7 includes a connecting tube 73 fixedly connected and communicating with the plastic hose 5 and the metal rinsing tube 6. Inside the connecting tube 73, there is a water outlet hole 74. On the end face of the connecting tube 73, there is a pressing handle 71. The magnitude of the pressing displacement of the pressing handle 71 represents the flow rate of the flowing rinsing liquid. One end of the pressing handle 71 is fixedly connected with a flow control member 72. When the pressing handle 71 moves, it will drive the flow control member 72 to displace within the water outlet hole 74. The space occupied by the flow control member 72 within the water outlet hole 74 controls the flow rate of the rinsing liquid. The flow control member 72 is slidably sleeved inside the connecting tube 73. The outer wall of the flow control member 72 is sleeved with a spring 75. Both ends of the spring 75 are fixedly connected to the connecting tube 73 and the flow control member 72 respectively. When the pressing handle 71 is not under pressure, the spring 75 pushes the flow control member 72 to reset.

[0028] According to Figures 1 - 4 , add the prepared rinsing liquid into the pressurized spray kettle 1, then press the pressurizing handle 41 until it cannot be pressed any further. Slowly insert the metal rinsing tube 6 into the sample to be rinsed, slowly press the flow control switch assembly 7 by hand, and continuously rotate the metal rinsing tube 6 until the test ends.

[0029] This device has been verified through a large number of comparison tests. The results meet the requirements of Test Method for Sand Equivalent of Fine Aggregates T0334 - 2005 in the current industry standard JTG 3432 - 2024 "Test Procedures for Aggregates in Highway Engineering". Moreover, the test results are more accurate and intuitive. It has the characteristics of simple structure, reasonable design, economic applicability, and accurate testing, and has great significance for popularization.

[0030] The above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A new sand equivalent test device, comprising a pressurized water spray kettle (1), a kettle lid (2) threadedly connected to the top of the pressurized water spray kettle (1), and a kettle lifting handle (3) fixedly connected to the top of the kettle lid (2), characterized in that, A driving component (4) for pressurizing the flushing liquid in the pressurized watering can (1) is arranged at the top of the watering can handle (3). The driving component (4) includes a pressurizing handle (41) arranged at the top of the watering can handle (3). A reciprocating rod (42) is fixedly connected to the bottom of the pressurizing handle (41). A pressure application cylinder (43) is fixedly connected to the bottom of the kettle lid (2). The bottom end of the reciprocating rod (42) is fixedly connected with a piston (44) that is slidably connected to the inside of the pressure application cylinder (43). A one-way air inlet pipe (46) fixedly communicating with the inside of the pressure application cylinder (43) is arranged at the top of the watering can handle (3). A one-way exhaust pipe (47) is fixedly communicated with the peripheral surface of the pressure application cylinder (43).

2. The novel sand equivalent test device according to claim 1, characterized in that, A impurity blocking component (461) for preventing impurities in the air from entering the pressurized watering can (1) along with the air flow is arranged at the top end of the one-way air inlet pipe (46). The impurity blocking component (461) includes a mounting collar (4611) threadedly connected to the top end of the one-way air inlet pipe (46). A filter screen (4612) is fixedly connected to the inside of the mounting collar (4611).

3. A novel sand equivalent test device according to claim 1, characterized in that, Two limiting rings (45) are fixedly connected to the inner wall of the pressure application cylinder (43) from top to bottom. The piston (44) is arranged between the two limiting rings (45).

4. A novel sand equivalent test device according to claim 1, characterized in that, A plastic hose (5) fixedly connected to the inner wall of the watering can handle (3) is arranged inside the pressurized watering can (1). A metal flushing pipe (6) is arranged at one end of the plastic hose (5) far away from the watering can handle (3).

5. A novel sand equivalent test device according to claim 4, characterized in that, A switch component (7) for controlling the flow rate of the flushing liquid is arranged between the plastic hose (5) and the metal flushing pipe (6).

6. The novel sand equivalent test device according to claim 5, characterized in that, The switch component (7) includes a connecting pipe (73) fixedly communicated with the plastic hose (5) and the metal flushing pipe (6). A water outlet hole (74) is arranged inside the connecting pipe (73).

7. A novel sand equivalent test device according to claim 6, characterized in that, A pressing handle (71) is arranged on the end face of the connecting pipe (73). One end of the pressing handle (71) is fixedly connected with a flow control member (72). The flow control member (72) is slidably sleeved inside the connecting pipe (73). A spring (75) is sleeved on the outer wall of the flow control member (72). Two ends of the spring (75) are respectively fixedly connected with the connecting pipe (73) and the flow control member (72).

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