CN219369618U - Melting point instrument with uniform heating - Google Patents

Abstract

The utility model relates to the technical field of melting point instruments, and discloses a melting point instrument with uniform heating, which effectively solves the problem that the temperature of PE plastic is heated very unevenly and the judgment of the melting point of a sample is affected when the existing melting point instrument is tested; the automatic melting point device comprises a melting point device main body and a heating disc, wherein the heating disc is fixedly connected to the left side of the upper surface of the melting point device main body, an upright post is fixedly connected to the right side of the upper surface of the melting point device main body, a movable ring is arranged on the outer surface of the upright post through an up-down adjusting assembly, an observing assembly is arranged on the outer surface of the movable ring, and two mounting plates are arranged in the heating disc through a left-right adjusting assembly; according to the utility model, PE plastic with a melting point to be measured is placed in the heating disc, and then the electric heating plates on the mounting plate are tightly attached to the two sides of the PE plastic, so that the temperature of the PE plastic can be increased more uniformly due to the fact that three sides of the PE plastic are heated, and the melting point of a sample can be measured more accurately.

Description

Melting point instrument with uniform heating

Technical Field

The utility model relates to the technical field of melting point instruments, in particular to a melting point instrument with uniform heating.

Background

The melting point of a substance, by definition of physicochemical, refers to the temperature at which the substance changes from a solid state to a liquid state. In the field of organic chemistry, melting point measurement is a basic means for identifying the nature of substances, and is also one of the important methods for measuring purity, so that the melting point measurement instrument has an important role in the chemical industry and medical research, and is a necessary instrument for producing medicines, fragrances, dyes and other organic crystal substances.

The PE plastic is directly placed in the heating disc during testing by the conventional melting point meter, and the temperature of the PE plastic is heated unevenly due to the fact that the heater is arranged at the bottom of the heating disc, so that the temperature of the bottom of the PE plastic is higher than that of the top of the PE plastic, and the judgment of the melting point of a sample is affected.

Disclosure of Invention

In order to overcome the technical defects in the prior art, the utility model provides the melting point instrument which is heated uniformly, and the problem that the temperature of PE plastic is heated very unevenly and the judgment of the melting point of a sample is affected when the conventional melting point instrument is tested is effectively solved.

The technical scheme adopted by the utility model is as follows: the utility model provides a melting point appearance that is heated evenly, includes melting point appearance main part and heating plate, heating plate fixed connection is in the upper surface left side of melting point appearance main part, the upper surface right side fixedly connected with stand of melting point appearance main part, the surface of stand is provided with the expansion ring through upper and lower adjusting part, the surface of expansion ring is provided with the observation subassembly, the inside of heating plate is provided with two mounting panels through controlling adjusting part, two the electrical heating board is all installed to one side that the mounting panel is close to mutually.

Preferably, the upper and lower adjusting assembly comprises a first screw rod, a first handle and a connecting rod, a cavity is formed in the upright column, long grooves are formed in the left side and the right side of the upright column, the connecting rod is fixedly connected with the inner wall of the movable ring and is slidingly connected with the inside of the long grooves, the top end of the first screw rod is fixedly connected with the first handle, the bottom end of the first screw rod penetrates through the connecting rod and is rotationally connected with the inner bottom wall of the cavity through a bearing, and the first screw rod is in threaded connection with the connecting rod.

Preferably, the observation assembly comprises a mounting ring, a supporting rod and a magnifier, wherein the mounting ring is rotationally connected to the outer surface of the movable ring through a bearing, one end of the supporting rod is fixedly connected with the mounting ring, and the other end of the supporting rod is fixedly connected with the magnifier.

Preferably, the outer surface of the mounting ring is provided with a screw, and the threaded end of the screw abuts against the outer surface of the movable ring.

Preferably, the left and right adjusting assembly comprises a second screw rod, a second handle and a guide rod, wherein the left end of the second screw rod is fixedly connected with the second handle, the right end of the second screw rod penetrates through the front side of the mounting plate and is rotationally connected with the right side inner wall of the heating plate through a bearing, the second screw rod is in threaded connection with the mounting plate, the left end of the guide rod is fixedly connected with the left side inner wall of the heating plate, and the right end of the guide rod penetrates through the back surface of the mounting plate and is fixedly connected with the right side inner wall of the heating plate, and the guide rod is in sliding connection with the mounting plate.

Preferably, the electric heating plate is contacted with the inner bottom wall of the heating plate, and the bottom ends of the two sides of the mounting plates, which are close to each other, incline to the middle part.

The beneficial effects of the utility model are as follows:

1. through putting PE plastics that need survey the fusing point in the heating plate, then rotate the second handle and drive the second lead screw rotatory, because second lead screw and mounting panel threaded connection, the second lead screw can drive two mounting panels and be close to each other at rotatory in-process this moment until the electrical heating board on the mounting panel is closely with PE plastics's both sides, because PE plastics's trilateral is heated, can make its more even intensification, more accurate survey the fusing point of sample.

2. Through rotating the magnifying glass and encircling the expansion ring through the bracing piece and installation and rotating, until rotatory top to the heating plate with the magnifying glass and screw up the screw, then rotate first handle and drive first lead screw rotation, because first lead screw and connecting rod threaded connection, first lead screw can drive connecting rod, expansion ring and magnifying glass and remove this moment at rotatory in-process to move the suitable position with the magnifying glass and focus, observe the change of sample more easily, excellent in use effect.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a schematic cross-sectional elevation view of the present utility model.

Fig. 3 is an enlarged schematic view of the structure of fig. 2 a according to the present utility model.

Fig. 4 is a schematic view of the internal structure of the heating plate of the present utility model.

Reference numerals illustrate: 1. a melting point apparatus body; 2. a heating plate; 3. a column; 4. an up-down adjusting assembly; 5. a movable ring; 6. an observation assembly; 7. left and right adjusting components; 8. a mounting plate; 9. an electric heating plate; 401. a first screw rod; 402. a first handle; 403. a connecting rod; 404. a cavity; 405. a long groove; 601. a mounting ring; 602. a support rod; 603. a magnifying glass; 604. a screw; 701. a second screw rod; 702. a second handle; 703. a guide rod.

Detailed Description

The utility model is further described below with reference to the accompanying drawings:

as shown in fig. 1-4, this embodiment provides a melting point appearance that is heated evenly, including melting point appearance main part 1 and heating dish 2, heating dish 2 fixed connection is in the upper surface left side of melting point appearance main part 1, the upper surface right side fixedly connected with stand 3 of melting point appearance main part 1, the surface of stand 3 is provided with expansion ring 5 through upper and lower adjusting part 4, the surface of expansion ring 5 is provided with observation subassembly 6, the inside of heating dish 2 is provided with two mounting panels 8 through controlling adjusting part 7, electrical heating board 9 is all installed to the one side that two mounting panels 8 are close to mutually.

In order to enable the viewing assembly 6 to be moved up and down, it is shown in figures 2 and 3: the upper and lower adjusting assembly 4 includes first lead screw 401, first handle 402 and connecting rod 403, cavity 404 has been seted up to the inside of stand 3, elongated slot 405 has all been seted up to the left and right sides of stand 3, connecting rod 403 and the inner wall fixed connection of expansion ring 5 and sliding connection are in elongated slot 405's inside, the top and the first handle 402 fixed connection of first lead screw 401, the bottom of first lead screw 401 runs through connecting rod 403 and rotates with the interior bottom wall of cavity 404 through the bearing and be connected, first lead screw 401 and connecting rod 403 threaded connection, set up like this and rotate first handle 402 and drive first lead screw 401 rotatory, because first lead screw 401 and connecting rod 403 threaded connection, first lead screw 401 can drive connecting rod 403, expansion ring 5 at this moment in-process that rotates and remove.

For convenience of observation of PE plastic, as shown in fig. 1 and 2: the observation assembly 6 comprises a mounting ring 601, a supporting rod 602 and a magnifier 603, wherein the mounting ring 601 is rotationally connected to the outer surface of the movable ring 5 through a bearing, one end of the supporting rod 602 is fixedly connected with the mounting ring 601, the other end of the supporting rod 602 is fixedly connected with the magnifier 603, the rotary magnifier 603 is rotated around the movable ring 5 through the supporting rod 602 and the mounting ring 601, and the magnifier 603 can be rotated to the upper side of the heating plate 2 to observe PE plastic.

To avoid free rotation of the mounting ring 601, as shown in fig. 2 and 3: the outer surface of the mounting ring 601 is provided with a screw 604, the threaded end of the screw 604 is abutted against the outer surface of the movable ring 5, and thus the mounting ring 601 can be limited by screwing the screw 604, and the phenomenon of random rotation can not occur.

For heating both sides of the PE plastic, as shown in fig. 1 and 4: the left and right adjusting assembly 7 comprises a second screw rod 701, a second handle 702 and a guide rod 703, the left end of the second screw rod 701 is fixedly connected with the second handle 702, the right end of the second screw rod 701 penetrates through the front side of the mounting plate 8 and is rotationally connected with the right side inner wall of the heating plate 2 through a bearing, the second screw rod 701 is in threaded connection with the mounting plate 8, the left end of the guide rod 703 is fixedly connected with the left side inner wall of the heating plate 2, the right end of the guide rod 703 penetrates through the back surface of the mounting plate 8 and is fixedly connected with the right side inner wall of the heating plate 2, the guide rod 703 is in sliding connection with the mounting plate 8, and thus the second screw rod 702 is rotationally arranged to drive the second screw rod 701 to rotate.

For convenience of viewing the PE plastic, as shown in fig. 1 and 4: the electric heating plate 9 contacts with the inner bottom wall of the heating plate 2, and the bottom end of one side, which is close to the two mounting plates 8, is inclined towards the middle part, so that the top end openings of the two mounting plates 8 are larger, and the observation is more convenient.

The PE plastic with the melting point to be measured is placed in the heating disc 2 during use, then the second handle 702 is rotated to drive the second screw rod 701 to rotate, because the second screw rod 701 is in threaded connection with the mounting plate 8, at this time, the second screw rod 701 can drive the two mounting plates 8 to be close to each other in the rotating process until the electric heating plates 9 on the mounting plates 8 are tightly attached to the two sides of the PE plastic, the PE plastic can be heated more uniformly due to three sides of the PE plastic, the melting point of a sample can be measured more accurately, then the magnifying glass 603 is rotated around the movable ring 5 through the supporting rod 602 and the mounting ring 601, until the magnifying glass 603 is rotated to the upper side of the heating disc 2 and the screw 604 is screwed, then the first handle 402 is rotated to drive the first screw rod 401 to rotate, and because the first screw rod 401 is in threaded connection with the connecting rod 403, at this time, the first screw rod 401 can drive the connecting rod 403, the movable ring 5 and the magnifying glass 603 to move to a proper position for focusing, the change of the sample can be observed more easily, and the use effect is better.

While the basic principles and main features of the utility model and advantages of the utility model have been shown and described, it will be understood by those skilled in the art that the present utility model is not limited by the foregoing embodiments, which are described in the foregoing description merely illustrate the principles of the utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a melting point appearance that is heated evenly, includes melting point appearance main part (1) and heating dish (2), its characterized in that, heating dish (2) fixed connection is in the upper surface left side of melting point appearance main part (1), upper surface right side fixedly connected with stand (3) of melting point appearance main part (1), the surface of stand (3) is provided with expansion ring (5) through upper and lower adjusting part (4), the surface of expansion ring (5) is provided with observation subassembly (6), the inside of heating dish (2) is provided with two mounting panel (8) through controlling adjusting part (7), two electrical heating board (9) are all installed to one side that mounting panel (8) are close to mutually.

2. The melting point instrument of claim 1, wherein the upper and lower adjusting assembly (4) comprises a first screw rod (401), a first handle (402) and a connecting rod (403), a cavity (404) is formed in the upright (3), long grooves (405) are formed in the left side and the right side of the upright (3), the connecting rod (403) is fixedly connected with the inner wall of the movable ring (5) and is slidingly connected with the inside of the long grooves (405), the top end of the first screw rod (401) is fixedly connected with the first handle (402), the bottom end of the first screw rod (401) penetrates through the connecting rod (403) and is rotationally connected with the inner bottom wall of the cavity (404) through a bearing, and the first screw rod (401) is in threaded connection with the connecting rod (403).

3. The melting point apparatus of claim 2, wherein the observation assembly (6) comprises a mounting ring (601), a supporting rod (602) and a magnifying glass (603), the mounting ring (601) is rotatably connected to the outer surface of the movable ring (5) through a bearing, one end of the supporting rod (602) is fixedly connected with the mounting ring (601), and the other end of the supporting rod (602) is fixedly connected with the magnifying glass (603).

4. A uniformly heated melting point apparatus as claimed in claim 3, wherein the outer surface of the mounting ring (601) is provided with screws (604), the threaded ends of the screws (604) being in abutment with the outer surface of the movable ring (5).

5. The melting point apparatus of claim 4, wherein the left and right adjusting assembly (7) comprises a second screw rod (701), a second handle (702) and a guide rod (703), the left end of the second screw rod (701) is fixedly connected with the second handle (702), the right end of the second screw rod (701) penetrates through the front side of the mounting plate (8) and is rotationally connected with the right inner wall of the heating plate (2) through a bearing, the second screw rod (701) is in threaded connection with the mounting plate (8), the left end of the guide rod (703) is fixedly connected with the left inner wall of the heating plate (2), the right end of the guide rod (703) penetrates through the back surface of the mounting plate (8) and is fixedly connected with the right inner wall of the heating plate (2), and the guide rod (703) is in sliding connection with the mounting plate (8).

6. The melting point apparatus as set forth in claim 5, wherein the electric heating plate (9) contacts with the inner bottom wall of the heating plate (2), and the bottom ends of the two mounting plates (8) on the side close to each other are inclined toward the middle.