CN210585015U

CN210585015U - Simple device for water bath heating

Info

Publication number: CN210585015U
Application number: CN201921449913.6U
Authority: CN
Inventors: 李州; 赵诗雅; 曾伟航; 彭燕
Original assignee: Sichuan Agricultural University
Current assignee: Sichuan Agricultural University
Priority date: 2019-09-02
Filing date: 2019-09-02
Publication date: 2020-05-22
Anticipated expiration: 2029-09-02

Abstract

The utility model aims to solve the technical problem that a simple and easy device for water-bath heating that reduces the test tube and height-adjustable, prevent that the water boiling spill that leads to loss sample liquid, the multiple specification of adaptation because of the interior gas of test tube receives the thermal energy is provided. The device comprises a support, the support comprises a bottom plate, a left side plate and a right side plate, the left side plate, the right side plate and the bottom plate jointly form a U-shaped structure, a water bath tub and a power supply are arranged on the support of the upper surface of the bottom plate, a heating rod is arranged at the bottom in the water bath tub, a test tube clamping device is arranged above the water bath tub, and a test tube cover with adjustable height is arranged above the test tube clamping device. When the device is used, firstly, a proper amount of water is added into a water bath tub, then a test tube with a sample is fixed through a test tube clamping device, then a test tube cover is covered at a test tube opening, then a power supply is switched on, and a switch is switched on to carry out water bath heating. Convenient operation is fit for promoting in the simple and easy device technical field of water-bath heating.

Description

Simple device for water bath heating

Technical Field

The utility model relates to a water-bath heating simple and easy technical field specifically is a simple and easy device for water-bath heating.

Background

A water bath is a heating method in chemical laboratories using water as a heat transfer medium. The method is suitable for heating temperature below 100 deg.C by putting the vessel of the heated material into water with boiling point of 100 deg.C. When heating, the material to be heated is usually placed in a container, the container is placed on a heat source, and some containers, such as glass containers and ceramic containers, are directly placed on the heat source, so that the heating material is not uniformly heated due to nonuniform heating, too fast temperature rise and explosion, or poor heat transfer, so that the heating material is not uniformly heated. For this purpose, the heated container products entering the laboratory should be subjected to a hot bath treatment. The hot bath is a method of placing a container in a hot bath material, slowly raising the temperature of the hot bath material to a certain degree, and slowly cooling the hot bath material, thereby achieving the purpose of improving the heat transfer performance of the container and making the bottom of the container uniform.

The existing simple water bath heating device has some defects in some aspects, and needs further improvement, because in the water bath heating process, the gas in the test tube is heated to cause expansion, so that the sample liquid is consumed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a simple and easy device for water-bath heating that reduces the test tube and height-adjustable, prevent that the water boiling spill that leads to loss sample liquid, the multiple specification of adaptation because of the interior gas of test tube receives the thermal energy is provided.

The utility model provides a technical scheme that its technical problem adopted does: the simple device for water bath heating comprises a support, wherein the support comprises a bottom plate, a left side plate and a right side plate, the left side plate is fixedly arranged at the left end of the upper surface of the bottom plate, the right side plate is fixedly arranged at the right end of the upper surface of the bottom plate, the left side plate and the right side plate are both vertical to the bottom plate, the left side plate, the right side plate and the bottom plate jointly form a U-shaped structure, a water bath tub and a power supply are arranged on the upper surface of the bottom plate, a heating rod is arranged at the bottom of the water bath tub and connected with the power supply, a switch is arranged between the heating rod and the power supply, a test tube clamping device is arranged above the water bath tub, a test tube is fixedly arranged in the test tube clamping device and comprises a first semicircular plate, a second semicircular plate, a first connecting rod, a second connecting rod, a first pull rod and a second pull rod, the right end of the first connecting rod is fixed at, the left end of the first connecting rod is fixedly connected with the center of the outer side wall of the first semicircular plate, the central axis of the first semicircular plate is coincided with the central axis of the water bath tub, the left end of the second connecting rod is fixed at the right end of the second pull rod through a second detachable structure, the right end of the second connecting rod is fixedly connected with the center of the outer side wall of the second semicircular plate, the radius of the second semicircular plate is equal to that of the first semicircular plate, the central axis of the second semicircular plate is coincided with the central axis of the water bath tub, the right end of the first pull rod is fixed on the right side plate through a first fixing device, the left end of the second pull rod is fixed on the left side plate through a second fixing device, a support plate is arranged between the left side plate and the right side plate, the left end of the support plate is fixed at the upper end of the left side plate, and the right, the supporting plate is parallel to the bottom plate, a first thread through hole is formed in the surface of the supporting plate, the central axis of the first thread through hole is perpendicular to the supporting plate, a first screw is arranged in the first thread through hole, the first screw is matched with the first thread through hole, the length of the first screw is larger than the distance from the upper surface of the supporting plate to the upper end face of the bathtub, the upper end of the first screw extends to the upper portion of the supporting plate, the lower end of the first screw penetrates through the first thread through hole and extends downwards, a first knob is arranged at the upper end of the first screw, a circular plate is fixedly arranged at the lower end of the first screw, the circular plate is perpendicular to the first screw, and a test tube cover is bonded to the lower surface of the circular plate.

The first fixing device comprises a first rectangular through hole arranged on the surface of the right side plate, the first rectangular through hole is arranged along the vertical direction, a first sliding plate is arranged on the outer surface of the right side plate, the front end of the first sliding plate is fixed at the front end of the right side plate through a sliding device, the rear end of the first sliding plate is fixed at the rear end of the right side plate through a sliding device, a first through hole is arranged on the surface of the first sliding plate, the central axis of the first through hole is perpendicular to the first sliding plate, the diameter of the first pull rod is matched with that of the first through hole, the right end of the first pull rod sequentially penetrates through the first rectangular through hole and the first through hole, and the right end of the first pull rod is fixed on the outer side of the first sliding plate through the first pulling device; the second fixing device comprises a second rectangular through hole arranged on the surface of the left side plate, the second rectangular through hole and the first rectangular through hole are symmetrical left and right relative to the center of the bottom plate, the length of the second rectangular through hole is equal to that of the first rectangular through hole, the outer surface of the left side plate is provided with a second sliding plate, the front end of the second sliding plate is fixed at the front end of the left side plate through a sliding device, the rear end of the second sliding plate is fixed at the rear end of the left side plate through a sliding device, the surface of the second sliding plate is provided with a second through hole, the central axis of the second through hole is vertical to the second sliding plate, the diameter of the second pull rod is matched with that of the second through hole, the left end of the second pull rod sequentially penetrates through the second rectangular through hole and the second through hole, and the left end of the second pull rod is fixed on the outer side of the second sliding plate through a second pulling device.

Further, the first pulling device comprises a first pulling block arranged at the right end of the first pull rod, the first pulling block and the first pull rod are perpendicular to each other, a first extension spring is sleeved at the right end of the first pull rod, the left end of the first extension spring is fixed on the outer surface of the first sliding plate, and the right end of the first extension spring is fixed on the left side surface of the first pulling block; the second pulling device comprises a second pulling block arranged at the left end of the second pull rod, the second pulling block is perpendicular to the second pull rod, a second extension spring is sleeved at the left end of the second pull rod, the right end of the second extension spring is fixed on the outer surface of the second sliding plate, and the left end of the second extension spring is fixed on the right side surface of the second pulling block.

The sliding device further comprises a U-shaped clamping plate, the U-shaped clamping plate comprises a first fixing plate, a second fixing plate and a third fixing plate, the first fixing plate and the third fixing plate are respectively fixed at the left end and the right end of the second fixing plate, the first fixing plate and the third fixing plate are perpendicular to the second fixing plate, the thickness of the left side plate is equal to that of the right side plate and equal to the distance between the first fixing plate and the third fixing plate, the first fixing plate is fixedly connected with the front end of the first sliding plate or the rear end of the first sliding plate or the front end of the second sliding plate or the rear end of the second sliding plate, a second threaded through hole is formed in the surface of the second fixing plate, a second jacking screw rod is arranged in the second threaded through hole, and a second knob is arranged at the outer end of the second jacking screw rod.

Further, the first detachable structure comprises a first external thread arranged at the right end of the first connecting rod, a first internal thread hole is formed in the left end face of the first pull rod, and the right end of the first connecting rod extends into the first internal thread hole; the second detachable structure comprises a second external thread arranged at the left end of the second connecting rod, a second internal thread hole is formed in the right end face of the second pull rod, and the left end of the second connecting rod stretches into the second internal thread hole.

Further, an opening at the upper end of the bathtub is provided with a cover plate, the cover plate is matched with the bathtub, the cover plate is provided with a circular through hole, the central axis of the circular through hole is coincided with the central axis of the bathtub, the upper surface of the cover plate is fixedly provided with a splash-proof pipe, the outer diameter of the splash-proof pipe is equal to the diameter of the circular through hole, the central axis of the splash-proof pipe is coincided with the central axis of the circular through hole, the inner diameter of the splash-proof pipe is larger than the maximum outer diameter of a test tube, the side wall of the splash-proof pipe is provided with a first rectangular notch and a second rectangular notch, the first rectangular notch and the second rectangular notch are symmetrical about the central axis of the splash-proof pipe, the first rectangular notch is arranged along the axial direction of the splash-proof pipe, the width of the first rectangular notch is matched with the diameter of the first connecting rod, the width of the second rectangular notch is matched with the diameter of the second connecting rod, the length of the second rectangular notch is equal to that of the first rectangular notch, the upper end of the second rectangular notch extends to the upper end face of the splash guard pipe, an annular baffle is arranged in the splash guard pipe, the outer diameter of the annular baffle is matched with the inner diameter of the splash guard pipe, the height of the annular baffle is greater than that of the first rectangular notch, a first sliding block and a second sliding block are respectively arranged on the outer side wall of the annular baffle, the first sliding block and the second sliding block are symmetrical about the central axis of the annular baffle, the first sliding block is positioned in the first rectangular notch and can slide up and down, a first compression spring is arranged on the lower surface of the first sliding block, the upper end of the first compression spring is fixed on the lower surface of the first sliding block, and the lower end of the first compression spring is fixed on the upper surface of the cover plate, the second slider is located second rectangle breach and can slide from top to bottom, the lower surface of second slider is provided with second compression spring, the lower surface at the second slider is fixed to second compression spring's upper end, second compression spring's lower extreme is fixed on the apron upper surface, and when first compression spring and second compression spring were in natural state, the up end of ring baffle coincided with the up end of splashproof pipe.

Further, a temperature sensor is arranged in the water bath tub, a controller and a digital display are arranged on the bottom plate, the temperature sensor and the digital display are respectively connected with the controller, the switch is connected with the controller, and the controller is connected with a power supply.

The utility model has the advantages that: when the simple device for water bath heating is used, firstly, a proper amount of water is added into a water bath tub, then a test tube containing a sample is fixed through a test tube clamping device, the proper height is adjusted, then a test tube cover is covered on a test tube opening, because a supporting plate is arranged between a left side plate and a right side plate, the left end of the supporting plate is fixed at the upper end of the left side plate, the right end of the supporting plate is fixed at the upper end of the right side plate, the supporting plate is parallel to a bottom plate, the surface of the supporting plate is provided with a first threaded through hole, the central axis of the first threaded through hole is mutually vertical to the supporting plate, a first screw rod is arranged in the first threaded through hole, the first screw rod is matched with the first threaded through hole, the length of the first screw rod is greater than the distance from the upper surface of the supporting plate to the upper end surface of the water bath tub, the upper end of, the upper end of the first screw rod is provided with a first knob, the lower end of the first screw rod is fixedly provided with a circular plate, the circular plate is perpendicular to the first screw rod, a test tube cover is bonded to the lower surface of the circular plate, the first screw rod is driven to rotate by rotating the first knob, the first screw rod moves downwards until the test tube cover is contacted with a test tube, then the power is switched on, and the switch is turned on to heat in a water bath.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a simple device for water bath heating according to the present invention;

fig. 2 is a schematic view of another perspective structure of the simple device for heating in water bath according to the present invention;

fig. 3 is a partial schematic structural view of a simple device for heating in water bath according to the present invention;

fig. 4 is a schematic structural diagram of the cover plate according to the present invention;

fig. 5 is a schematic view of another perspective structure of the cover plate according to the present invention;

fig. 6 is a schematic view of a part of the structure of the cover plate according to the present invention;

the notation in the figure is: the device comprises a bracket 1, a bottom plate 101, a left side plate 102, a right side plate 103, a bathtub 2, a power supply 3, a heating rod 4, a first semicircular plate 6, a second semicircular plate 7, a first connecting rod 8, a second connecting rod 9, a first pull rod 10, a second pull rod 11, a support plate 12, a first screw 13, a first knob 14, a circular plate 15, a test tube cover 16, a first rectangular through hole 17, a first sliding plate 18, a second rectangular through hole 19, a second sliding plate 20, a first pull block 21, a first extension spring 22, a second pull block 23, a second extension spring 24, a first fixing plate 25, a second fixing plate 26, a third fixing plate 27, a second tightening screw 28, a second knob 29, a cover plate 30, a splash guard 31, a first rectangular notch 32, a second rectangular notch 33, an annular baffle 34, a first slide block 35, a second slide block 36, a first compression spring 37, a second compression spring 38, a temperature sensor 39, a temperature sensor, Controller 40, digital display 41.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1-6, the simple device for heating in water bath comprises a support 1, the support 1 comprises a bottom plate 101, a left side plate 102 and a right side plate 103, the left side plate 102 is fixedly arranged at the left end of the upper surface of the bottom plate 101, the right side plate 103 is fixedly arranged at the right end of the upper surface of the bottom plate 101, the left side plate 102 and the right side plate 103 are both perpendicular to the bottom plate 101, the left side plate 102, the right side plate 103 and the bottom plate 101 jointly form a U-shaped structure, a water bath tub 2 and a power supply 3 are arranged on the upper surface of the bottom plate 101, a heating rod 4 is arranged at the bottom of the water bath tub 2, the heating rod 4 is connected with the power supply 3, a switch is arranged between the heating rod 4 and the power supply 3, a test tube clamping device is arranged above the water bath tub 2, a test tube is fixedly arranged in the, The right end of the first connecting rod 8 is fixed at the left end of the first pull rod 10 through a first detachable structure, the left end of the first connecting rod 8 is fixedly connected with the center of the outer side wall of the first semicircular plate 6, the central axis of the first semicircular plate 6 is coincided with the central axis of the bathtub 2, the left end of the second connecting rod 9 is fixed at the right end of the second pull rod 11 through a second detachable structure, the right end of the second connecting rod 9 is fixedly connected with the center of the outer side wall of the second semicircular plate 7, the radius of the second semicircular plate 7 is equal to the radius of the first semicircular plate 6, the central axis of the second semicircular plate 7 is coincided with the central axis of the bathtub 2, the right end of the first pull rod 10 is fixed on the right side plate 103 through a first fixing device, the left end of the second pull rod 11 is fixed on the left side plate 102 through a second fixing device, a support plate 12 is arranged between the left side plate 102 and the right side plate 103, the left end of the support plate 12 is fixed at the upper end of the left side plate 102, the right end of the support plate 12 is fixed at the upper end of the right side plate 103, the support plate 12 is parallel to the bottom plate 101, a first threaded through hole is arranged on the surface of the support plate 12, the central axis of the first threaded through hole is perpendicular to the support plate 12, a first screw 13 is arranged in the first threaded through hole, the first screw 13 is matched with the first threaded through hole, the length of the first screw 13 is greater than the distance from the upper surface of the support plate 12 to the upper end surface of the water bath 2, the upper end of the first screw 13 extends above the support plate 12, the lower end of the first screw 13 extends downwards through the first threaded through hole, and the upper end of the first, a circular plate 15 is fixedly arranged at the lower end of the first screw 13, the circular plate 15 is perpendicular to the first screw 13, and a test tube cover 16 is bonded to the lower surface of the circular plate 15. When the simple device for water bath heating is used, firstly, a proper amount of water is added into a water bath tub 2, then a test tube with a sample is fixed through a test tube clamping device, the proper height is adjusted, then a test tube cover 16 is covered on a test tube opening, because a support plate 12 is arranged between a left side plate 102 and a right side plate 103, the left end of the support plate 12 is fixed at the upper end of the left side plate 102, the right end of the support plate 12 is fixed at the upper end of the right side plate 103, the support plate 12 is parallel to a bottom plate 101, the surface of the support plate 12 is provided with a first threaded through hole, the central axis of the first threaded through hole is vertical to the support plate 12, a first screw 13 is arranged in the first threaded through hole, the first screw 13 is matched with the first threaded through hole, the length of the first screw 13 is greater than the distance from the upper surface of the support plate 12 to the upper end surface of the water bath, the lower extreme of first screw rod 13 passes first screw thread through-hole downwardly extending, the upper end of first screw rod 13 is provided with first knob 14, the fixed circular plate 15 that is provided with of lower extreme of first screw rod 13, circular plate 15 and first screw rod 13 mutually perpendicular, circular plate 15 lower surface bonds has test tube lid 16, only need through rotatory first knob 14 drive first screw rod 13 rotate make its downstream to test tube lid 16 and test tube contact can, then switch on 3, open the switch and carry out water-bath heating.

In the above embodiment, according to the practical requirements of the experiment, the first fixing device comprises a first rectangular through hole 17 arranged on the surface of the right side plate 103, the first rectangular through hole 17 is provided in a vertical direction, the outer surface of the right side plate 103 is provided with a first sliding plate 18, the front end of the first sliding plate 18 is fixed to the front end of the right side plate 103 by a sliding means, the rear end of the first sliding plate 18 is fixed to the rear end of the right side plate 103 by a sliding means, the first sliding plate 18 is provided with a first through hole on the surface, the central axis of the first through hole is perpendicular to the first sliding plate 18, the diameter of the first pull rod 10 is matched with that of the first through hole, the right end of the first pull rod 10 sequentially passes through the first rectangular through hole 17 and the first through hole, the right end of the first pull rod 10 is fixed on the outer side of the first sliding plate 18 through a first pulling device; the second fixing means comprises a second rectangular through hole 19 provided in the surface of the left side plate 102, the second rectangular through hole 19 and the first rectangular through hole 17 are bilaterally symmetric with respect to the center of the base plate 101, the length of the second rectangular through hole 19 is equal to the length of the first rectangular through hole 17, the outer surface of the left side plate 102 is provided with a second sliding plate 20, the front end of the second sliding plate 20 is fixed to the front end of the left side plate 102 by a sliding means, the rear end of the second sliding plate 20 is fixed to the rear end of the left side plate 102 by a sliding means, the second sliding plate 20 is provided with a second through hole on the surface, the central axis of the second through hole is perpendicular to the second sliding plate 20, the diameter of the second pull rod 11 is matched with that of the second through hole, the left end of the second pull rod 11 sequentially passes through the second rectangular through hole 19 and the second through hole, the left end of the second pull rod 11 is fixed to the outer side of the second sliding plate 20 by a second pulling device.

In order to fix the test tube conveniently, the first pulling device comprises a first pulling block 21 arranged at the right end of the first pull rod 10, the first pulling block 21 is perpendicular to the first pull rod 10, a first extension spring 22 is sleeved at the right end of the first pull rod 10, the left end of the first extension spring 22 is fixed on the outer surface of the first sliding plate 18, and the right end of the first extension spring 22 is fixed on the left surface of the first pulling block 21; the second pulling device comprises a second pulling block 23 arranged at the left end of the second pulling rod 11, the second pulling block 23 is perpendicular to the second pulling rod 11, a second extension spring 24 is sleeved at the left end of the second pulling rod 11, the right end of the second extension spring 24 is fixed on the outer surface of the second sliding plate 20, and the left end of the second extension spring 24 is fixed on the right side surface of the second pulling block 23. The test tube can be put in by pulling the first pulling block 21 or the second pulling block 23, and then the test tube can be clamped and fixed by loosening the restoring force of the tension spring.

From the viewpoint of simplicity and practicality, the sliding apparatus is preferably of a structure including a U-shaped clamp plate including a first fixing plate 25, a second fixing plate 26, and a third fixing plate 27, the first fixing plate 25 and the third fixing plate 27 are respectively fixed at left and right ends of the second fixing plate 26, the first fixing plate 25 and the third fixing plate 27 are perpendicular to the second fixing plate 26, the left side plate 102 has a thickness equal to that of the right side plate 103 and an interval equal to that between the first fixing plate 25 and the third fixing plate 27, the first fixing plate 25 is fixedly connected to a front end of the first sliding plate 18 or a rear end of the first sliding plate 18 or a front end of the second sliding plate 20 or a rear end of the second sliding plate 20, a second threaded through hole is formed on a surface of the second fixing plate 26, a second tightening screw 28 is provided in the second threaded through hole, the outer end of the second tightening screw 28 is provided with a second knob 29.

The detachable structure is the prior art, and a preferable detachable structure is a threaded structure, the first detachable structure comprises a first external thread arranged at the right end of a first connecting rod 8, a first internal threaded hole is formed in the left end face of the first pull rod 10, and the right end of the first connecting rod 8 extends into the first internal threaded hole; the second detachable structure comprises a second external thread arranged at the left end of the second connecting rod 9, a second internal thread hole is formed in the right end face of the second pull rod 11, and the left end of the second connecting rod 9 extends into the second internal thread hole.

In the water bath heating process, water in the water bath tub 2 can boil when reaching a certain temperature, and possibly can cause boiling water to splash outwards, for this reason, a cover plate 30 is arranged at an upper end opening of the water bath tub 2, the cover plate 30 is matched with the water bath tub 2, a circular through hole is arranged on the cover plate 30, the central axis of the circular through hole is coincided with the central axis of the water bath tub 2, a splash-proof pipe 31 is fixedly arranged on the upper surface of the cover plate 30, the outer diameter of the splash-proof pipe 31 is equal to the diameter of the circular through hole, the central axis of the splash-proof pipe 31 is coincided with the central axis of the circular through hole, the inner diameter of the splash-proof pipe 31 is larger than the maximum outer diameter of a test tube, a first rectangular notch 32 and a second rectangular notch 33 are arranged on the side wall of the splash-proof pipe 31, the first rectangular notch 32 and the second rectangular notch 33 are symmetrical, the width of first rectangle breach 32 and the diameter phase-match of first connecting rod 8, the upper end of first rectangle breach 32 extends to the up end of splashproof pipe 31, the width of second rectangle breach 33 and the diameter phase-match of second connecting rod 9, the length of second rectangle breach 33 equals the length of first rectangle breach 32, the upper end of second rectangle breach 33 extends to the up end of splashproof pipe 31, be provided with ring baffle 34 in the splashproof pipe 31, the external diameter of ring baffle 34 and the internal diameter phase-match of splashproof pipe 31, the height of ring baffle 34 is greater than the length of first rectangle breach 32, be provided with first slider 35 and second slider 36 on the lateral wall of ring baffle 34 respectively, first slider 35 and second slider 36 are symmetrical about the central axis of ring baffle 34, first slider 35 is located and can slide from top to bottom with first rectangle breach 32, the lower surface of first slider 35 is provided with first compression spring piece 37, the lower surface at first slider 35 is fixed to the upper end of first compression spring piece 37, the lower extreme of first compression spring piece 37 is fixed at apron 30 upper surface, second slider 36 is located second rectangle breach 33 and can slides from top to bottom, the lower surface of second slider 36 is provided with second compression spring 38, the lower surface at second slider 36 is fixed to the upper end of second compression spring 38, the lower extreme of second compression spring 38 is fixed at apron 30 upper surface, and when first compression spring piece 37 and second compression spring 38 were in natural state, the up end of annular baffle 34 and the up end coincidence of splashproof pipe 31. This ensures that boiling water does not spill out.

The water bath heating is important for controlling the temperature, so that a temperature sensor 39 is arranged in the water bath tub 2, a controller 40 and a digital display 41 are arranged on the bottom plate 101, the temperature sensor 39 and the digital display 41 are respectively connected with the controller 40, the switch is connected with the controller 40, and the controller 40 is connected with the power supply 3. This allows for automatic control by the controller 40.

Claims

1. The utility model provides a simple and easy device for water bath heating which characterized in that: comprises a bracket (1), the bracket (1) comprises a bottom plate (101), a left side plate (102) and a right side plate (103), the left side plate (102) is fixedly arranged at the left end of the upper surface of the bottom plate (101), the right side plate (103) is fixedly arranged at the right end of the upper surface of the bottom plate (101), the left side plate (102) and the right side plate (103) are both vertical to the bottom plate (101), the left side plate (102), the right side plate (103) and the bottom plate (101) jointly form a U-shaped structure, the upper surface of the bottom plate (101) is provided with a water basin (2) and a power supply (3), the bottom of the water basin (2) is provided with a heating rod (4), the heating rod (4) is connected with the power supply (3), a switch is arranged between the heating rod (4) and the power supply (3), a test tube clamping device is arranged above the water basin (2), and a test tube is, the test tube clamping device comprises a first semicircular plate (6), a second semicircular plate (7), a first connecting rod (8), a second connecting rod (9), a first pull rod (10) and a second pull rod (11), wherein the right end of the first connecting rod (8) is fixed at the left end of the first pull rod (10) through a first detachable structure, the left end of the first connecting rod (8) is fixedly connected with the center of the outer side wall of the first semicircular plate (6), the central axis of the first semicircular plate (6) is superposed with the central axis of the water tub (2), the left end of the second connecting rod (9) is fixed at the right end of the second pull rod (11) through a second detachable structure, the right end of the second connecting rod (9) is fixedly connected with the center of the outer side wall of the second semicircular plate (7), and the radius of the second semicircular plate (7) is equal to that of the first semicircular plate (6), the central axis of the second semicircular plate (7) is coincided with the central axis of the water bath (2), the right end of the first pull rod (10) is fixed on the right side plate (103) through a first fixing device, the left end of the second pull rod (11) is fixed on the left side plate (102) through a second fixing device, a support plate (12) is arranged between the left side plate (102) and the right side plate (103), the left end of the support plate (12) is fixed at the upper end of the left side plate (102), the right end of the support plate (12) is fixed at the upper end of the right side plate (103), the support plate (12) is parallel to the bottom plate (101), a first threaded through hole is formed in the surface of the support plate (12), the central axis of the first threaded through hole is mutually perpendicular to the support plate (12), a first screw (13) is arranged in the first threaded through hole, and the first screw (13) is matched with the first threaded through hole, the length of the first screw rod (13) is greater than the distance from the upper surface of the support plate (12) to the upper end face of the water bath tub (2), the upper end of the first screw rod (13) extends to the position above the support plate (12), the lower end of the first screw rod (13) penetrates through the first threaded through hole and extends downwards, the upper end of the first screw rod (13) is provided with a first knob (14), the lower end of the first screw rod (13) is fixedly provided with a circular plate (15), the circular plate (15) is perpendicular to the first screw rod (13), and a test tube cover (16) is bonded to the lower surface of the circular plate (15).

2. A simple device for water bath heating as claimed in claim 1, characterized in that: the first fixing device comprises a first rectangular through hole (17) arranged on the surface of the right side plate (103), the first rectangular through hole (17) is arranged along the vertical direction, the outer surface of the right side plate (103) is provided with a first sliding plate (18), the front end of the first sliding plate (18) is fixed at the front end of the right side plate (103) through a sliding device, the rear end of the first sliding plate (18) is fixed at the rear end of the right side plate (103) through a sliding device, the surface of the first sliding plate (18) is provided with a first through hole, the central axis of the first through hole is vertical to the first sliding plate (18), the diameter of the first pull rod (10) is matched with that of the first through hole, the right end of the first pull rod (10) sequentially passes through the first rectangular through hole (17) and the first through hole, the right end of the first pull rod (10) is fixed on the outer side of the first sliding plate (18) through a first pulling device; the second fixing device comprises a second rectangular through hole (19) arranged on the surface of the left side plate (102), the second rectangular through hole (19) and the first rectangular through hole (17) are bilaterally symmetrical about the center of the bottom plate (101), the length of the second rectangular through hole (19) is equal to that of the first rectangular through hole (17), a second sliding plate (20) is arranged on the outer surface of the left side plate (102), the front end of the second sliding plate (20) is fixed at the front end of the left side plate (102) through a sliding device, the rear end of the second sliding plate (20) is fixed at the rear end of the left side plate (102) through a sliding device, a second through hole is arranged on the surface of the second sliding plate (20), the central axis of the second through hole is perpendicular to the second sliding plate (20), the diameter of the second pull rod (11) is matched with that of the second through hole, and the left end of the second pull rod (11) sequentially penetrates through the second rectangular through hole (19), And the left end of the second pull rod (11) is fixed on the outer side of the second sliding plate (20) through a second pulling device.

3. A simple device for water bath heating as claimed in claim 2, characterized in that: the first pulling device comprises a first pulling block (21) arranged at the right end of the first pull rod (10), the first pulling block (21) is perpendicular to the first pull rod (10), a first extension spring (22) is sleeved at the right end of the first pull rod (10), the left end of the first extension spring (22) is fixed on the outer surface of the first sliding plate (18), and the right end of the first extension spring (22) is fixed on the left side surface of the first pulling block (21); the second pulling device comprises a second pulling block (23) arranged at the left end of the second pulling rod (11), the second pulling block (23) is perpendicular to the second pulling rod (11), a second extension spring (24) is sleeved at the left end of the second pulling rod (11), the right end of the second extension spring (24) is fixed on the outer surface of the second sliding plate (20), and the left end of the second extension spring (24) is fixed on the right side surface of the second pulling block (23).

4. A simple device for water bath heating as claimed in claim 3, characterized in that: the sliding device comprises a U-shaped clamping plate, the U-shaped clamping plate comprises a first fixing plate (25), a second fixing plate (26) and a third fixing plate (27), the first fixing plate (25) and the third fixing plate (27) are respectively fixed at the left end and the right end of the second fixing plate (26), the first fixing plate (25) and the third fixing plate (27) are both vertical to the second fixing plate (26), the thickness of the left side plate (102) is equal to that of the right side plate (103) and equal to the distance between the first fixing plate (25) and the third fixing plate (27), the first fixing plate (25) is fixedly connected with the front end of the first sliding plate (18) or the rear end of the first sliding plate (18) or the front end of the second sliding plate (20) or the rear end of the second sliding plate (20), a second threaded through hole is formed in the surface of the second fixing plate (26), and a second tightening screw rod (28) is arranged in the second threaded through hole, and a second knob (29) is arranged at the outer end of the second jacking screw rod (28).

5. The simple device for water bath heating as claimed in claim 4, wherein: the first detachable structure comprises a first external thread arranged at the right end of a first connecting rod (8), a first internal thread hole is formed in the left end face of the first pull rod (10), and the right end of the first connecting rod (8) extends into the first internal thread hole; the second detachable structure comprises a second external thread arranged at the left end of the second connecting rod (9), a second internal thread hole is formed in the right end face of the second pull rod (11), and the left end of the second connecting rod (9) extends into the second internal thread hole.

6. A simple device for water bath heating as claimed in claim 5, characterized in that: the utility model discloses a splash-proof bathtub, including basin (2), apron (30) and basin (2) phase-match, be provided with circular through-hole on apron (30), the central axis of circular through-hole coincides with the central axis of basin (2), fixed surface is provided with splash-proof pipe (31) on apron (30), the external diameter of splash-proof pipe (31) equals with the diameter of circular through-hole, the central axis of splash-proof pipe (31) coincides with the central axis of circular through-hole, the internal diameter of splash-proof pipe (31) is greater than the biggest external diameter of test tube, be provided with first rectangle breach (32) and second rectangle breach (33) on the lateral wall of splash-proof pipe (31), first rectangle breach (32) and second rectangle breach (33) are symmetrical about the central axis of splash-proof pipe (31), first rectangle breach (32) set up along the axial direction of splash-proof pipe (31), the width of first rectangle breach (32) and the diameter phase-match of head rod (8), the upper end of first rectangle breach (32) extends to the up end of splashproof pipe (31), the width of second rectangle breach (33) and the diameter phase-match of second connecting rod (9), the length of second rectangle breach (33) equals the length of first rectangle breach (32), the upper end of second rectangle breach (33) extends to the up end of splashproof pipe (31), be provided with ring baffle (34) in splashproof pipe (31), the external diameter of ring baffle (34) and the internal diameter phase-match of splashproof pipe (31), the height of ring baffle (34) is greater than the length of first rectangle breach (32), be provided with first slider (35) and second slider (36) on the lateral wall of ring baffle (34) respectively, first slider (35) and second slider (36) are about the central axis symmetry of ring baffle (34), the first sliding block (35) is positioned in the first rectangular notch (32) and can slide up and down, a first compression spring block (37) is arranged on the lower surface of the first sliding block (35), the upper end of the first compression spring block (37) is fixed on the lower surface of the first sliding block (35), the lower end of the first compression spring block (37) is fixed on the upper surface of the cover plate (30), the second sliding block (36) is positioned in the second rectangular notch (33) and can slide up and down, a second compression spring (38) is arranged on the lower surface of the second sliding block (36), the upper end of the second compression spring (38) is fixed on the lower surface of the second sliding block (36), the lower end of the second compression spring (38) is fixed on the upper surface of the cover plate (30), when the first compression spring block (37) and the second compression spring (38) are in a natural state, the upper end face of the annular baffle plate (34) is overlapped with the upper end face of the splash pipe (31).

7. A simple device for water bath heating as claimed in claim 6, characterized in that: a temperature sensor (39) is arranged in the water bath tub (2), a controller (40) and a digital display are arranged on the bottom plate (101), the temperature sensor (39) and the digital display are respectively connected with the controller (40), the switch is connected with the controller (40), and the controller (40) is connected with the power supply (3).