Adjusting mechanism and temperature control alarm device

Abstract

The utility model relates to the technical field of temperature control alarm, in particular to an adjusting mechanism and a temperature control alarm device, and the adjusting mechanism comprises a mounting unit which comprises a glass tube and a glass shield, the glass shield is arranged at the outer side of the glass tube, and the top and the bottom of the glass tube are embedded in the glass shield; the adjusting unit comprises opening grooves formed in the two sides of the glass shield, telescopic assemblies arranged in the glass shield and fixing assemblies arranged in the opening grooves, and the telescopic assemblies and the fixing assemblies are matched with each other; the connecting unit comprises a magnetic attraction assembly arranged in the glass shield and a pushing assembly arranged in the open groove and matched with the magnetic attraction assembly. The adjusting mechanism has the advantages that the fixing assembly is matched with the magnetic attraction assembly, the receiver and the emitter can be moved, the moved positions can be fixed, the stability of the receiver and the emitter can be improved, and therefore the adjusting mechanism can be widely applied to various industrial scenes with the high requirement for temperature control precision.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature control alarms, in particular to an adjustment mechanism and a temperature control alarm device. Background Art

[0002] A temperature control alarm device is a device used to monitor temperature and issue an alarm when the temperature exceeds a set range. Liquid expansion type temperature control alarm devices are more common. They make full use of the characteristics of liquid expansion thermometers such as low cost, small size, and high accuracy, providing a highly utilized temperature control alarm device for industrial scenarios.

[0003] In the existing technology, in order to ensure the monitoring accuracy during use, the photoelectric transceiver unit in the liquid expansion type temperature control alarm device fixes the receiver and transmitter in the photoelectric transceiver unit in the temperature control alarm device by bolts. However, this will limit the scope of application of the device, making it impossible to adapt to multiple measured media and reducing its flexibility. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the problems in the above or prior art that the positions of the receiver and the transmitter are fixed, multiple measured media cannot be adapted, and the flexibility is poor, the present utility model is proposed.

[0006] Therefore, the utility model aims to provide an adjusting mechanism.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: an installation unit, including a glass tube and a glass shield, the glass shield is arranged on the outside of the glass tube, and the top and bottom of the glass tube are embedded in the glass shield; an adjustment unit, including opening grooves arranged on both sides of the glass shield, a telescopic component arranged in the glass shield, a fixed component arranged in the opening groove, and the telescopic component and the fixed component cooperate with each other; a connecting unit, including a magnetic attraction component arranged in the glass shield, and a pushing component arranged in the opening groove and cooperating with the magnetic attraction component.

[0008] As a preferred solution of the adjustment mechanism of the utility model, the telescopic assembly includes a displacement groove arranged in the glass cover, a movable rod arranged in the displacement groove, a spring arranged in the movable rod, and a telescopic rod arranged on the spring; the telescopic rod is movably connected to the inside of the movable rod.

[0009] As a preferred solution of the adjustment mechanism of the utility model, the fixing assembly includes a limit block arranged on the inner wall of the opening groove, a limit plate arranged on the telescopic rod and the movable rod, and a fixed block arranged on the limit plate; the limit block and the fixed block cooperate with each other.

[0010] As a preferred solution of the adjustment mechanism of the utility model, the magnetic attraction component includes a first groove arranged on the inner wall of the glass cover, a first magnet arranged in the first groove, a second groove arranged in the open groove, and a second magnet arranged in the second groove; the first magnet and the second magnet are magnetically attracted to each other, and the first magnet is slidably connected in the first groove.

[0011] As a preferred solution of the adjustment mechanism of the utility model, the pushing component includes a sliding plate arranged on the second magnet and a first sliding groove arranged on the sliding plate; the first sliding groove is slidably connected to the other side of the limiting plate.

[0012] As a preferred solution of the adjustment mechanism of the utility model, it includes: a second slide groove arranged on the sliding plate, a limiting groove arranged in the second slide groove, a pushing block arranged in the second slide groove, and limiting pieces arranged on both sides of the pushing block, and a rubber sleeve on the pushing block; the pushing block is movably connected in the second slide groove and the limiting groove, and cooperates with the limiting plate, and the limiting piece is slidably connected in the limiting groove.

[0013] As a preferred solution of the adjustment mechanism of the utility model, it also includes an observation component, the observation component is arranged on the outside of the glass cover, the observation component includes a marking ruler arranged on the push block, and a scale number arranged on the outside of the glass cover.

[0014] The beneficial effects of the adjustment mechanism of the utility model are as follows: by means of a fixing component cooperating with a magnetic attraction component, the receiver and the transmitter can be moved, and the position after the movement can be fixed, which can improve the stability of the receiver and the transmitter, and thus can be widely used in various industrial scenarios with high requirements for temperature control accuracy.

[0015] In view of the fact that in actual use, there is still a problem that the fixed position cannot be adjusted.

[0016] In order to solve the above technical problems, the utility model also provides the following technical solutions: and, a detection unit, a temperature measuring component arranged on the glass tube, and a photoelectric transmitting and receiving component arranged on the glass tube.

[0017] As a preferred solution of the temperature control alarm device of the utility model, the temperature measuring component includes a probe arranged at the lower end of the glass tube, a hollow cavity arranged in the glass tube, and mercury arranged in the probe; the mercury flows flexibly in the probe and the hollow cavity.

[0018] As a preferred solution of the temperature control alarm device of the utility model, the photoelectric transmitting and receiving assembly includes a transmitter arranged in a glass cover, a receiver arranged in the glass cover, an alarm light arranged at the top of the glass cover, and a light-proof shell arranged outside the glass cover; a first magnet is arranged at the rear end of the transmitter and the receiver.

[0019] The beneficial effects of the utility model are as follows: through the cooperation between the temperature measuring component and the photoelectric transmitting and receiving component, when in contact with the material to be measured, the mercury expands due to the heat, and the mercury blocks the optical signal of the transmitter, and the receiver cannot receive the optical signal. At this time, the temperature switch outputs an electrical signal, and the alarm light comes on, thus achieving the effect of temperature switch control. The temperature switch has low cost and high reliability and precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0021] Figure 1 It is a schematic diagram of the overall structure of the regulating mechanism of the utility model.

[0022] Figure 2 It is a schematic cross-sectional view of the overall structure of the regulating mechanism of the utility model.

[0023] Figure 3 for Figure 2 Enlarged schematic diagram at point A in the middle.

[0024] Figure 4 It is a schematic cross-sectional view of the adjustment unit structure of the adjustment mechanism of the utility model.

[0025] Figure 5 for Figure 4 Enlarged schematic diagram of point B in the middle.

[0026] Figure 6 This is the circuit diagram of this practical temperature control alarm device. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0030] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0031] Example 1

[0032] Reference Figures 1 to 5 , which is the first embodiment of the utility model, and this embodiment provides an adjustment mechanism to solve the problem that the installation height of the transmitter and the receiver cannot be adjusted, including a connecting unit 300, including a magnetic attraction component 301 arranged in the glass cover 102, and a pushing component 302 arranged in the opening groove 201 and cooperating with the magnetic attraction component 301.

[0033] Further, the magnetic attraction assembly 301 includes a first magnet 301b disposed on the rear ends of the transmitter 402a and the receiver 404b, a first groove 301a disposed on the inner wall of the glass shield 102, a second groove 301c disposed in the opening groove 201, and a second magnet 301d disposed in the second groove 301c; the first magnet 301b and the second magnet 301d are magnetically attracted to each other, the first magnet 301b is slidably connected in the first groove 301a, rectangular first grooves 301a are formed in the upper central positions of the inner walls of the glass shield 102, the first magnets 301b are disposed on the rear ends of the transmitter 402a and the receiver 404b, the first magnets 301b are slidably connected in the first grooves 301a, opening grooves 201 are formed in the upper central positions of the outer sides of the glass shield 102, the opening grooves 201 are in the shape of a "convex" character groove, second grooves 301c are formed in the central positions of their inner walls, the second grooves 301c and the first grooves 301a are vertically aligned and have the same size, second magnets 301d are slidably connected up and down in the two second grooves 301c, the first magnet 301b and the second magnet 301d are separated by the glass shield 102, and since glass is a non-magnetic material, the magnetic fields of the first magnet 301b and the second magnet 301d will pass through the glass and interact with each other, resulting in mutual attraction between the first magnet 301b and the second magnet 301d. A sliding plate 302a is fixedly installed on the second magnet 301d.

[0034] Further, it further includes an observation assembly 303. The observation assembly 303 is disposed on the outer side of the glass shield 102. The observation assembly 303 includes a marking ruler 303a disposed on the push block 302e and a scale number 303b disposed on the outer side of the glass shield 102. A marking ruler 303a is fixedly connected between the sliding plates 302a on the glass shield 102. The marking ruler 303a is in the shape of a "匚". The marking ruler 303a, the receiver 404b, and the transmitter 402a are at the same installation height. The inner side thereof is in mutual fit with the front surface of the light-shielding housing 404d, and scale numbers 303b are disposed on the fronts of the glass shield 102 and the light-shielding housing 404d and are kept consistent. The scale number 303b represents the temperature, that is, the heat degree of the measured medium.

[0035] When in use, the sliding plate 302a slides up and down at the same time, and the first magnet 301b is magnetically attracted by the second magnet 301d, so that the receiver 404b and the transmitter 402a move up or down at the same time, which achieves the effect of changing the temperature change set by the temperature switch for adjustment, thereby achieving the effect of being widely used in various industrial scenarios with high requirements for temperature control accuracy. As the upper sliding block slides up and down, the marking ruler 303a is driven up and down. The temperature set by the temperature switch is the scale number 303b on the horizontal surface of the upper side of the marking ruler 303a. This makes it easy for the operator to adjust according to the actual situation and adjust the temperature control of different measured media to improve the flexibility and applicability of the device.

[0036] Example 2

[0037] Reference Figures 1 to 5 , which is the second embodiment of the utility model. Different from the previous embodiment, this embodiment provides a connecting unit 300 of the adjustment mechanism, which solves the problem that the positions of the receiver 404b and the transmitter 402a cannot be fixed after adjustment. It includes an adjustment unit 200, including an opening groove 201, a telescopic component 202 arranged in the glass cover 102, a fixing component 203 arranged in the opening groove 201, and the telescopic component 202 and the fixing component 203 cooperate with each other.

[0038] Furthermore, the telescopic assembly 202 includes a displacement groove 202a arranged in the glass shield 102, a movable rod 202b arranged in the displacement groove 202a, a spring 202c arranged in the movable rod 202b, and a telescopic rod 202d arranged on the spring 202c; the telescopic rod 202d is movably connected to the inside of the movable rod 202b, and the displacement groove 202a is opened near the front and rear parts of the glass shield 102. The fixing assembly 203 includes a limit block 203a arranged on the inner wall of the opening groove 201, a limit plate 203b arranged on the telescopic rod 202d and the movable rod 202b, and a fixed block 203c arranged on the limit plate 203b; the limit block 203a and the fixed block 203c cooperate with each other, the displacement groove 202a is opened in the interior of the glass shield 102 near the front and rear parts, and passes through the opening groove 201, and the displacement groove 202a is opened. The inner part of 02a is connected to the telescopic rod 202d and the movable rod 202b for sliding up and down, and one side of the telescopic rod 202d is fixedly connected to the spring 202c, and the other end of the spring 202c is fixedly connected to the bottom of the inner wall of the movable rod 202b, which makes the telescopic rod 202d elastically connected to the movable rod 202b, and one side of the telescopic rod 202d and the other side of the movable rod 202b are fixedly connected to the limit plate 203b, which makes the telescopic rod 202d and the movable rod 202b move inward when the pushing blocks 302e on both sides are pushed to move inward at the same time, thereby driving the telescopic rod 202d and the movable rod 202b to move inward, and making the two ends of the spring 202c receive the pressure applied by the telescopic rod 202d and the movable rod 202b, thereby deforming, and the elastic potential energy can be stored by the compression of the spring 202c, and after the thrust applied to the limit plate 203b disappears, the limit plate 203b is driven to reset.

[0039] Specifically, a first slide groove 302b is arranged on the sliding plate 302a, and the other side of the first slide groove 302b is slidably connected to the limit plate 203b, a second slide groove 302c is arranged on the sliding plate 302a, a limit groove 302d is arranged in the second slide groove 302c, and a pushing block 302e is arranged in the second slide groove 302c; the pushing block 302e is movably connected in the second slide groove 302c and the limit groove 302d and cooperates with the limit plate 203b, and a rubber sleeve 302g on the pushing block 302e, the front and rear surfaces of the sliding plate 302a are both provided with a first slide groove 302b, the first slide groove 302b is a "convex" shaped groove, and the interior thereof is slidably connected to the limit plate 203b, a second slide groove 302c is arranged on one side of the sliding plate 302a, and the front and rear sides of the inner wall of the second slide groove 302c are both provided with limit grooves The groove 302d, the first slide groove 302b and the second slide groove 302c are interconnected, and a limiting member 302f is arranged in the limiting groove 302d. The limiting member 302f slides horizontally in the limiting groove 302d, which plays a limiting role, so that the pushing block 302e can only move within a specific range, thereby preventing the pushing block 302e from disengaging from the second slide groove 302c. The pushing block 302e can slide up and down in the second slide groove 302c, and the other side of the pushing block 302e cooperates with the surface of one side of the limiting plate 203b. A rubber sleeve 302g is arranged on the pushing block 302e. The rubber sleeve 302g can increase the friction when the pushing block 302e is moved, which is conducive to adjusting it. It can also increase the resistance encountered by the pushing block 302e when it slides up and down, and prevent the pushing block 302e from sliding autonomously due to other factors.

[0040] Furthermore, a plurality of limit blocks 203a are provided on the inner wall of the opening groove 201 near the front and rear parts, and a plurality of fixed blocks 203c are provided on the side of the limit plate 203b. The fixed blocks 203c and the limit blocks 203a are both triangular in shape and fit each other. A triangular structure is formed between the two limit blocks 203a, and the two limit blocks 203a are equal to the fixed block 203c, so that the fixed block 203c can be limited between the two limit blocks 203a, thereby achieving the effect of limiting the fixed block 203c.

[0041] When in use, when it is necessary to change the installation height of the transmitter 402a and the receiver 404b, force can be applied to the rubber sleeves 302g on both sides at the same time, and the push block 302e can be pushed upward to move upward. When the push block 302e can no longer be moved upward, the upper end of the push block 302e is in contact with the upper side of the inner wall of the second slide groove 302c. At this time, the push block 302e is pressed inward at the same time, and the inner side of the push block 302e enters the first slide groove 302b and contacts the surface of the limit plate 203b. By pressing the push block 302e, an inward thrust is applied to the limit plate 203b, thereby driving the limit plate 203b to move inward. The limit plates 203b on both sides drive the telescopic rod 202d and the movable rod 202b to move inward, and make The two ends of the spring 202c are subjected to the pressure from the telescopic rod 202d and the movable rod 202b, thereby being deformed, and the fixed block 203c on the limit plate 203b is separated from the limit block 203a. At this time, the limit plate 203b is no longer constrained by the limit block 203a and can move up and down, thereby changing the installation height of the transmitter 402a and the receiver 404b. When the positions of the transmitter 402a and the receiver 404b are determined, the pushing blocks 302e on both sides can be released at the same time. The compression of the spring 202c can store elastic potential energy. When the thrust applied by the limit plate 203b disappears, the limit plate 203b can be driven to reset, so that the fixed block 203c is re-limited in the limit block 203a, and the limit plate 203b is re-limited.

[0042] Example 3

[0043] Reference Figures 2 to 3 , which is the third embodiment of the utility model. Different from the previous embodiment, this embodiment provides a temperature control alarm device, including the adjustment mechanism in the above embodiment, including a detection unit 400, a temperature measuring component 401 arranged on the glass tube 101, and a photoelectric transmitting and receiving component 402 arranged on the glass tube 101.

[0044] Specifically, the temperature measuring component 401 includes a probe 401a disposed at the lower end of the glass tube 101, a hollow cavity 401b disposed in the glass tube 101, and mercury 401c disposed in the probe 401a; the mercury 401c flows freely in the probe 401a and the hollow cavity 401b. The interior of the probe 401a is connected to the hollow cavity 401b in the glass tube 101, so that the mercury 401c in the probe 401a can enter the hollow cavity 401b. The glass tube 101 is a rectangular transparent glass tube 101. The probe 401a is in direct contact with the measured medium. When the temperature of the measured medium changes, the heat is transferred to the mercury 401c in the probe 401a. The mercury 401c rises along the hollow cavity 401b after being heated and expanded by the volume change caused by the temperature change, and forms a mercury 401c column of a certain height in the hollow cavity 401b. By observing the mercury 401c column, the temperature of the measured medium can be measured. The top and bottom of the glass tube 101 are embedded in the upper and bottom of the glass cover 102, so as to achieve the effect of fixing the glass tube 101.

[0045] Furthermore, the photoelectric transmitting and receiving assembly 402 includes a transmitter 402a disposed in the glass shield 102, a receiver 404b disposed in the glass shield 102, an alarm light 402c disposed at the top of the glass shield 102, and a light-proof housing 404d disposed outside the glass shield 102; the rear ends of the transmitter 402a and the receiver 404b are both provided with a first magnet 301b, and the receiver 404b and the transmitter 402a form a cylindrical photoelectric sensor model CPK-DR1M3 for projecting red light relays, and the transmitter 402a horizontally emits infrared rays to make them pass vertically through the glass tube 101, and the receiver 40 4b receives the infrared rays emitted by the transmitter 402a and transmits a signal to the alarm light 402c. If the temperature reaches the corresponding alarm value, the mercury 401c in the glass tube 101 blocks the propagation path of the infrared rays, and the receiver 404b no longer receives the light signal emitted by the transmitter 402a. At this time, the temperature switch outputs an electrical signal, and the alarm light 402c sounds an alarm. The alarm light 402c is set at the center of the top of the glass shield 102, and the light-proof shell 404d is set on the outside of the glass shield 102. The light-proof shell 404d is made of light-proof material to reduce the interference of ambient light on the light beams of the transmitter 402a and the receiver 404b.

[0046] refer to Figure 6, in the transmitter 402a, the current through LED1 and LED2 is controlled by resistor R1. The two LEDs (infrared light emitting diodes) emit infrared beams in parallel so that they fall on the PD1 photodiode, which is used to detect the infrared beam in the receiver 404b. PD1 (infrared receiving tube) converts the incident beam into a current. PD1 is paired with a current-to-voltage converter of LM324 (operational amplifier) ​​to convert the induced current into an equivalent voltage at the output end, which is used to switch transistor Q1 on, keeping the collector of Q1 at a low potential, which in turn keeps transistor Q2 and SCR (turn-off thyristor) in the off state. That is, when the infrared beam is not blocked, transistor Q1 will be in the on state, while transistor Q2 and SCR will be in the off state, so the alarm will not be triggered. When the light beam is blocked, since there is no induced current in the photodiode, transistor Q1 enters the cut-off mode, causing transistor Q2 to be turned on, and SCR to be turned on, causing the light-emitting diode LED3 to flash at a set frequency, and the BUZZER (buzzer) to beep at the same frequency, realizing an audible and visual alarm.

[0047] During use, when the height of the mercury 401c column does not reach the installation height of the receiver 404b and the transmitter 402a, the light beam emitted by the transmitter 402a can penetrate the glass tube 101 and reach the receiver 404b. At this time, the alarm light 402c does not output an electrical signal; when the height of the mercury 401c column reaches the installation height of the receiver 404b, the light beam emitted by the receiver 404b is blocked by the mercury 401c in the glass tube 101, and the receiver 404b cannot receive the light signal. At this time, the temperature switch outputs an electrical signal and the alarm light 402c sounds an alarm. Through such a design, the device has low cost and high reliability and accuracy.

[0048] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0049] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0050] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An adjustment mechanism, characterized in that: include, The installation unit (100) comprises a glass tube (101) and a glass cover (102), wherein the glass cover (102) is arranged on the outside of the glass tube (101), and the top and bottom of the glass tube (101) are both embedded in the glass cover (102); The adjustment unit (200) comprises opening grooves (201) arranged on both sides of the glass cover (102), a telescopic component (202) arranged in the glass cover (102), and a fixing component (203) arranged in the opening groove (201), wherein the telescopic component (202) and the fixing component (203) cooperate with each other; The connection unit (300) comprises a magnetic attraction component (301) arranged in the glass cover (102), and a pushing component (302) arranged in the opening groove (201) and cooperating with the magnetic attraction component (301).

2. The adjustment mechanism according to claim 1, characterized in that: The telescopic assembly (202) comprises a displacement groove (202a) disposed in the glass cover (102), a movable rod (202b) disposed in the displacement groove (202a), a spring (202c) disposed in the movable rod (202b), and a telescopic rod (202d) disposed on the spring (202c); The telescopic rod (202d) is movably connected inside the movable rod (202b).

3. The adjustment mechanism according to claim 2, characterized in that: The fixing assembly (203) comprises a limiting block (203a) arranged on the inner wall of the opening groove (201), a limiting plate (203b) arranged on the telescopic rod (202d) and the movable rod (202b), and a fixing block (203c) arranged on the limiting plate (203b); The limiting block (203a) and the fixing block (203c) cooperate with each other.

4. The adjustment mechanism according to claim 3, characterized in that: The magnetic attraction component (301) comprises a first groove (301a) arranged on the inner wall of the glass cover (102), a first magnet (301b) arranged in the first groove (301a), a second groove (301c) arranged in the opening groove (201), and a second magnet (301d) arranged in the second groove (301c); The first magnet (301b) and the second magnet (301d) are magnetically attracted to each other, and the first magnet (301b) is slidably connected in the first groove (301a).

5. The adjustment mechanism according to claim 4, characterized in that: The pushing component (302) comprises a sliding plate (302a) arranged on the second magnet (301d) and a first sliding groove (302b) arranged on the sliding plate (302a); The first sliding groove (302b) is slidably connected to the other side of the limiting plate (203b).

6. The adjustment mechanism according to claim 5, characterized in that: A second sliding groove (302c) arranged on the sliding plate (302a), a limiting groove (302d) arranged in the second sliding groove (302c), a pushing block (302e) arranged in the second sliding groove (302c), limiting members (302f) arranged on both sides of the pushing block (302e), and a rubber sleeve (302g) on ​​the pushing block (302e); The pushing block (302e) is movably connected in the second sliding groove (302c) and the limiting groove (302d), and cooperates with the limiting plate (203b), and the limiting member (302f) is slidably connected in the limiting groove (302d).

7. The adjustment mechanism according to claim 6, characterized in that: The device also includes an observation component (303), the observation component (303) is arranged on the outside of the glass cover (102), and the observation component (303) includes a marking ruler (303a) arranged on the pushing block (302e), and a scale number (303b) arranged on the outside of the glass cover (102).

8. A temperature control alarm device, comprising the adjustment mechanism according to any one of claims 1 to 7, characterized in that: And, a detection unit (400), a temperature measurement component (401) arranged on the glass tube (101), and a photoelectric transceiver component (402) arranged on the glass tube (101).

9. The temperature control alarm device according to claim 8, characterized in that: The temperature measuring component (401) comprises a probe (401a) arranged at the lower end of the glass tube (101), a hollow cavity (401b) arranged in the glass tube (101), and mercury (401c) arranged in the probe (401a); The mercury (401c) flows freely in the probe (401a) and the hollow cavity (401b).

10. The temperature control alarm device according to claim 9, characterized in that: The photoelectric transmitting and receiving assembly (402) comprises a transmitter (402a) arranged in the glass shield (102), a receiver (404b) arranged in the glass shield (102), an alarm light (402c) arranged at the top of the glass shield (102), and a light-proof housing (404d) arranged outside the glass shield (102); The transmitter (402a) and the receiver (404b) are both provided with a first magnet (301b) at the rear end.

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