A tool for fineness test of cement negative pressure sieve analyzer

Abstract

The utility model provides a tool for cement negative pressure sieve analysis appearance fineness test, including the clamping device for fixed sieve cover and knock the knocking device of sieve cover, the knocking device includes the casing with containing space, is equipped with the knocking piece in the casing, the knocking piece includes the hammer rod through below casing, sets up the pressure head of hammer rod top and stretches into containing space, sets up the hammer head of hammer rod below, and the spring of the hammer rod is sleeved between the pressure head and the casing, still include setting up the motor of casing top and the rotation axis stretches into containing space, sets up the pressure rod of motor rotation axis top for pressing pressure head drop, when using, the space surrounded by the tool's supporting leg is covered in the top of sieve cover, then starts the motor, the pressure rod does the rotation movement in containing space, repeatedly presses the downward movement of pressure head, drives the hammer head repeatedly to knock the sieve cover upper surface, to replace the staff realizes the purpose of sieve cover knock.

Description

Technical Field

[0001] This utility model relates to the field of cement fineness testing technology, and in particular to a tool for fineness testing using a cement negative pressure sieve analyzer. Background Technology

[0002] In the field of civil engineering, cement, as an extremely common and crucial building material, is classified into various specifications and models according to different engineering needs. Fineness testing is a vital step in the cement processing, and the accuracy of the test results directly affects the cement's performance in subsequent use.

[0003] Currently, a negative pressure sieve analyzer is an indispensable testing device for cement fineness testing. However, a pressing problem exists in the actual use of this instrument: cement samples easily adhere to the inner surface of the sieve cover. To avoid this adversely affecting the test results, operators have to continuously tap the sieve cover during instrument operation to dislodge the adhered cement samples. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a tool for fineness testing of a cement negative pressure sieve analyzer, which solves the problem of replacing the need for workers to tap the cover.

[0005] To solve the above-mentioned technical problems, this utility model provides a tool for fineness testing of a cement negative pressure sieve analyzer, including a clamping device for fixing the sieve cover and a striking device for striking the sieve cover. The striking device includes a housing with a receiving space, and a striking element is provided inside the housing. The striking element includes a hammer rod penetrating the bottom of the housing, a pressure head disposed above the hammer rod and extending into the receiving space, a hammer head disposed below the hammer rod, and a spring on the hammer rod fitted between the pressure head and the housing. It also includes a motor disposed above the housing and extending its rotating shaft into the receiving space, and a pressure rod disposed on the rotating shaft of the motor for pressing the pressure head down. By rotating the pressure rod, the pressure head is repeatedly pressed, causing the hammer head to strike the sieve cover downward.

[0006] In a preferred embodiment, a through hole is provided at the bottom of the housing, and a flange is provided on the outside of the through hole, with the bottom of the spring abutting against the flange.

[0007] In a preferred embodiment, the pressure head is hemispherical, and the lowest surface of the pressure head is lower than the lowest surface of the pressure rod.

[0008] In a preferred embodiment, the clamping device includes legs circumferentially distributed around the periphery of the lower housing and a boss disposed on the inner side of the legs.

[0009] In a preferred embodiment, a chamfer is provided on the inner side of the bottom of the support leg.

[0010] In a preferred embodiment, the support legs are made of metal, and the hammerhead is made of rubber.

[0011] In a preferred embodiment, a handle is also provided on one side of the housing.

[0012] The beneficial effects of this utility model are: when in use, the space formed by the tool's legs is placed over the screen cover, and then the motor is started. The pressure rod rotates within the space, repeatedly pressing the pressure head downwards, which drives the hammer to repeatedly strike the upper surface of the screen cover, thereby replacing the worker in achieving the purpose of striking the screen cover. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0014] Fig. 1 This is a front view structural diagram of an embodiment of the present utility model;

[0015] Fig. 2 This is an internal structural diagram of an embodiment of the present utility model.

[0016] Reference numerals: sieve cover 101; shell 11; accommodating space 111; through hole 112; hammer rod 12; pressure head 13; hammer head 14; spring 15; motor 16; pressure rod 17; handle 18; support leg 21; chamfer 211; boss 22. Detailed Implementation

[0017] Please see Figs. 1-2 As shown, this application provides a technical solution: a tool for fineness testing of a cement negative pressure sieve analyzer, including a clamping device for fixing a sieve cover 101 and a striking device for striking the sieve cover 101. The striking device includes a housing 11 with a receiving space 111, and a striking element is provided inside the housing 11. The striking element includes a hammer rod 12 penetrating below the housing 11, a pressure head 13 disposed above the hammer rod 12 and extending into the receiving space 111, a hammer head 14 disposed below the hammer rod 12, and a spring 15 fitted on the hammer rod 12 between the pressure head 13 and the housing 11. It also includes a motor 16 disposed above the housing 11 and extending its rotating shaft into the receiving space 111, and a pressure rod 17 disposed on the rotating shaft of the motor 16 for pressing the pressure head 13 down. By rotating the pressure rod 17, the pressure head 13 is repeatedly pressed, causing the hammer head 14 to strike the sieve cover 101 downward.

[0018] In a preferred embodiment, a through hole 112 is provided below the housing 11, and a flange 113 is provided outside the through hole 112, with the lower part of the spring 15 abutting against the flange 113.

[0019] In a preferred embodiment, the pressure head 13 is hemispherical, and the lowest surface of the pressure head 13 is lower than the lowest surface of the pressure rod 17.

[0020] This ensures that the lower surface of the pressure rod 17 is always in contact with the pressure head 13. During the rotation of the pressure rod 17, it can press down the pressure head 13 to descend, thereby allowing the hammer head 14 to descend and contact the screen cover 101, achieving the purpose of striking the screen cover 101.

[0021] In a preferred embodiment, the clamping device includes legs 21 circumferentially distributed around the lower housing 11 and a boss 22 disposed on the inner side of the legs 21.

[0022] In this way, the screen cover 101 can be locked in the space enclosed by the support legs 21. Generally, the screen cover 101 is round, and the space enclosed by the support legs 21 can be a matching cylinder. The purpose of setting the boss 22 is to lock it on top of the screen cover 101 so that the screen cover 101 will not tilt during the tapping process.

[0023] In a preferred embodiment, a chamfer 211 is provided on the inner side of the bottom of the support leg 21.

[0024] The chamfer 211 allows the sieve cover 101 to be easily inserted into the space enclosed by the support legs 21.

[0025] In a preferred embodiment, the support leg 21 is made of metal, and the hammer head 14 is made of rubber.

[0026] The metal support 21 increases the weight of the entire tool, effectively acting as a counterweight, so that the tool will not tip over during striking.

[0027] In a preferred embodiment, a handle 18 is also provided on one side of the housing 11.

[0028] The 18 handles make it easy to pick up tools by hand.

[0029] The operating steps of this tool are as follows: after pouring cement into the sieve and covering it with the sieve cover, hold the tool and place the space formed by the tool's support legs 21 over the sieve cover 101. At this time, the boss 22 can just press down on the sieve cover 101. Then start the motor 16, and the pressure rod 17 rotates in the receiving space 111, repeatedly pressing the pressure head 13 downward, driving the hammer head 14 to repeatedly strike the upper surface of the sieve cover 101, thereby replacing the worker to achieve the purpose of striking the sieve cover 101.

[0030] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A tool for fineness testing using a cement negative pressure sieve analyzer, characterized in that: The device includes a clamping device for fixing the screen cover (101) and a striking device for striking the screen cover (101). The striking device includes a housing (11) with a receiving space (111), and a striking element is provided inside the housing (11). The striking element includes a hammer rod (12) that passes through the bottom of the housing (11), a pressure head (13) that is disposed above the hammer rod (12) and extends into the receiving space (111), a hammer head (14) that is disposed below the hammer rod (12), and a spring (15) that is fitted on the hammer rod (12) between the pressure head (13) and the housing (11). The device also includes a motor (16) that is disposed above the housing (11) and extends the rotating shaft into the receiving space (111), and a pressure rod (17) that is disposed on the rotating shaft of the motor (16) for pressing the pressure head (13) to descend. The pressure head (13) is repeatedly pressed by rotating the pressure rod (17), so that the hammer head (14) strikes the screen cover (101) downward.

2. The tool for fineness testing of a cement negative pressure sieve analyzer according to claim 1, characterized in that: A through hole (112) is provided below the housing (11), and a flange (113) is provided outside the through hole (112). The lower part of the spring (15) rests against the flange (113).

3. The tool for fineness testing of a cement negative pressure sieve analyzer according to claim 1, characterized in that: The pressure head (13) is hemispherical, and the lowest surface of the pressure head (13) is lower than the lowest surface of the pressure rod (17).

4. The tool for fineness testing of a cement negative pressure sieve analyzer according to claim 1, characterized in that: The clamping device includes legs (21) circumferentially distributed around the lower housing (11) and a boss (22) located inside the legs (21).

5. The tool for fineness testing of a cement negative pressure sieve analyzer according to claim 4, characterized in that: A chamfer (211) is provided on the inner side of the bottom of the support (21).

6. The tool for fineness testing of a cement negative pressure sieve analyzer according to claim 5, characterized in that: The support leg (21) is made of metal, and the hammer head (14) is made of rubber.

7. The tool for fineness testing of a cement negative pressure sieve analyzer according to claim 4, characterized in that: A handle (18) is also provided on one side of the housing (11).

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