Microwave digestion instrument with pressure relief mechanism

Abstract

The invention relates to the technical field of microwave digestion instruments, in particular to a microwave digestion instrument with a pressure relief mechanism, which comprises a digestion instrument cabinet body, a digestion tank, an exhaust bracket disc, a pressure relief purifier, a ventilator, a power conversion tool and a disc gear, the peculiar smell can be timely absorbed by the L-shaped flat pipe after being exhausted from the digestion tank, so that the situation that the peculiar smell is diffused to pollute the microwave heating chamber is avoided, and compared with the traditional technology that the peculiar smell can be blown away without space dead angles by large-area ventilation in the microwave heating chamber, the positioning type peculiar smell absorption mode disclosed by the invention is lower in energy consumption and capable of rapidly exhausting the peculiar smell; a row of tanks filled with a purifying agent are used for absorbing and treating peculiar smell airflow, the peculiar smell airflow passes through one tank, the internal purifying agent is gradually saturated and loses efficacy when absorbing and treating peculiar smell, and before the efficacy loses efficacy, a path of the conveyed peculiar smell airflow is automatically replaced, and a new tank is selected for injection, which is equivalent to timely replacement of purifying liquid.

Description

Technical Field

[0001] The present invention relates to the technical field of microwave digestion instruments, and particularly to a microwave digestion instrument with a pressure relief mechanism. Background Art

[0002] ‌Microwave digestion instruments are mainly used for the digestion treatment of samples. Especially in the field of analytical chemistry,‌ they heat the samples and digestion solutions through microwave energy, enabling solid samples to react with acid or alkali solutions under high temperature and high pressure conditions, converting the target elements in the samples into soluble forms for subsequent analysis.

[0003] When the digestion tank is heated by microwaves, the internal samples and digestion solutions react violently, and the odoriferous air generated will break through and overflow from the top opening of the digestion tank. The odor fills the internal chamber of the microwave digestion instrument. By ventilating to remove the odor, but after the odor spreads and then is removed by ventilation, there may be a problem of odor remaining in the dead corners of the space. In this way, the chamber of the microwave digestion instrument will be gradually polluted by the odor gas. If the odor is sucked away at the source of odor discharge, the spread of the odor can be avoided, thereby improving the hygiene of the internal chamber of the microwave digestion instrument; for the treatment of the discharged odor, the odor airflow can be controlled to be injected into the purification liquid. The purification liquid absorbs the odor, and the generated clean gas is then re-circulated back into the chamber of the microwave digestion instrument. In this way, the airflow circulates around the internal chamber of the microwave digestion instrument, and the internal air pressure of the microwave digestion instrument chamber tends to be stable. However, the purification liquid needs to be replaced in time to ensure sufficient absorption of the odor by the purification liquid.

[0004] Based on the above research and development problems and solutions, the present invention provides a microwave digestion instrument with a pressure relief mechanism. Summary of the Invention

[0005] The purpose of the present invention is to provide a microwave digestion instrument with a pressure relief mechanism to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A microwave digestion instrument with a pressure relief mechanism, comprising: A digestion instrument cabinet body, the middle part of the digestion instrument cabinet body has a microwave heating chamber, and the bottom of the digestion instrument cabinet body has a pressure relief chamber; A plurality of digestion tanks evenly arranged in a ring and an exhaust bracket tray for supporting the digestion tanks. The exhaust bracket tray is arranged in the microwave heating chamber. The samples and digestion solutions contained in the digestion tanks react under microwave heating, and the exhaust bracket tray adsorbs and transfers the odor gas overflowing from the air release ports on the digestion tanks; A pressure relief purifier, the pressure relief purifier is arranged in the pressure relief chamber of the digestion instrument cabinet body, and the pressure relief purifier makes the environment of the microwave heating chamber of the digestion instrument cabinet body hygienic and stable through odor purification and automatic pressure relief; A ventilator arranged in the pressure relief chamber of the digestion instrument cabinet body, and the ventilator is connected between the pressure relief purifier and the exhaust bracket tray; A power converter, wherein the power converter is installed on the pressure relief purifier; A bracket shaft fixed at the middle of the bottom end of the exhaust bracket disc and a disc gear with a fixed sleeve on the bracket shaft, the disc gear respectively transmits the power converter and the ventilator.

[0007] The ventilator comprises: a ventilating portion, a neck pipe communicating between one end of the ventilating portion and the exhaust bracket plate, and a transfer pipe communicating with the other end of the ventilating portion; Odor sensor mounted on the neck tube.

[0008] The pressure relief purifier comprises: The integrated box device, the discharge pipe group and the inlet pipe group installed outside the integrated box device, one end of the inlet pipe group is connected with the transfer pipe, and the power conversion tool transmits the inlet pipe group and the integrated box device respectively; A row of purification units is arranged in the integrated box device, and the row of purification units purifies the odorous airflow in turn.

[0009] The ventilation part includes a wind column box fixedly connected between the neck tube and the transfer tube, a fan arranged in the wind column box, and a fan shaft fixed in the middle of the fan, one end of the fan shaft extends to the outside of the wind column box, and the fan shaft is meshed and connected with the disc gear by a gear arranged on the fan shaft.

[0010] The exhaust bracket plate includes a tray for supporting and driving the digestion tank to move around, a plurality of evenly arranged L-shaped flat tubes passing through the tray, a ring channel arranged below the tray, and a cover tube arranged outside the ring channel. The ring channel and the movable cover tube cooperate to form a ring box, and one end of the neck tube is connected to the ring box by passing through a shell body on one side of the cover tube, one end of the L-shaped flat tube is connected to the ring box by passing through the ring channel shell body, and the other end of the L-shaped flat tube faces the odor overflow port position on the digestion tank, and is fixedly connected to the bracket shaft at the lower middle part of the tray.

[0011] The integrated box device includes a concave box in the shape of a concave folded shell, a row of hooks arranged at the bottom of the inner cavity of the concave box, and an integrated shaft that establishes transmission with the row of hooks, the integrated shaft is movably sleeved in a through hole opened on a protrusion arranged on the concave box, the purification unit includes a tank box that is slidably inserted into a square groove set inside the concave box, an S-shaped spring fixed on the insertion end of the tank box, and an aeration box fixed in the tank box, the tank box is filled with a purification liquid for absorbing odors, a plurality of exhaust holes are opened on the end of the aeration box inserted into the purification liquid, and the other end of the aeration box extends to the top opening of the tank box.

[0012] The hook member includes a guide seat fixed on the concave box, a Z-shaped plate sliding through a plate hole opened on the guide seat, a hook body fixed corresponding to each slot box, a return pressure spring sheet contacted by one end of the Z-shaped plate, and a cam for moving the Z-shaped plate, one end of the return pressure spring sheet is fixed on the guide seat, and the other end of the Z-shaped plate is clamped with the hook body, a row of cams is fixed on the integrated shaft, the tip of each cam points to a different direction, and multiple directions are in a uniform ring state.

[0013] The inlet pipe group includes a cross-column box, a row of blocking tubes with movable sleeves on the outside of the cross-column box, and an air supply unit tube correspondingly passing through the shell of one side of each blocking tube. One end of the air supply unit tube passes through the concave box shell and is connected to an aeration box. An exhaust hole is opened on the side shell of the cross-column box to selectively connect with the air supply unit tube, and the direction of the exhaust hole is evenly arranged in a circle. A circular hole is opened at one end of the cross-column box for movable sleeve connection with the end of the transfer pipe. The discharge pipe group includes a collecting pipe, a row of return air unit tubes fixedly connected to the collecting pipe, a branch pipe one end of which is fixedly connected to the collecting pipe, a bleed valve installed at the other end of the branch pipe, and a one-way valve installed at one end of the collecting pipe. One end of the return air unit tube passes through the concave box shell and extends to the interior of the tank box.

[0014] The power conversion device includes a limit frame fixed on the concave box, and a tail control shaft, a reversing shaft and a pressing device supported on the limit frame, one end of the tail control shaft is meshed and connected with the outer gear ring on the cross column box through a fixed gear, the other end of the tail control shaft is meshed and connected with the bevel gear fixed at one end of the reversing shaft through a fixed bevel gear, and the other end of the reversing shaft is connected to the pressing device. The power conversion device also includes a first worm and a magnetic connection device, one end of the first worm is meshed and connected with the disc gear through a fixed gear, and a transmission is established between the other end of the first worm and the pressing device through the magnetic connection device. The pressing device includes a spring group for intermittently releasing power, a middle shaft connected to the middle of the spring group, a speed reduction gear fixed at one end of the middle shaft, a co-stroke gear connected to the edge of the spring group, and a co-stroke shaft fixed in the middle of the co-stroke gear. The edge of the spring group also drives the reversing shaft, and the middle shaft is movably sleeved in a through hole opened on the limit frame. After passing through the concave box shell, the co-stroke shaft is vertically transmitted with the integrated shaft.

[0015] The magnetic connection device includes a sub-plate fixed on the concave box, a head position shaft and a second worm supported on the sub-plate, a driving gear fixed at one end of the second worm, a break control gear transmitted on one side of the driving gear, a lever group supporting the break control gear, and an electromagnet fixed on the sub-plate. One end of the head position shaft is meshed and connected to the break control gear through a fixed gear, the other end of the head position shaft is meshed and connected to the helical teeth on the first worm through a fixed gear, the helical teeth on the second worm are meshed and connected to the pressing device, and the break control gear establishes meshing with the driving gear through axial movement. The lever group includes a direction seat fixed on the sub-plate, a T seat sliding through a square hole opened in the direction seat, a lever control shaft with one end movably sleeved in a through hole opened in the T seat, and a reset spring connected between the direction seat and the T seat. The other end of the lever control shaft is fixedly connected to the break control gear, and the T seat is magnetically attracted by an energized electromagnet through a fixed metal disk.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The reaction between the sample and the digestion solution in the digestion tank will generate odorous gas. After the odorous gas is discharged from the digestion tank, it will be sucked away in time by the L-shaped flat tube, so as to avoid the odor from spreading and contaminating the microwave heating chamber. Compared with the traditional technology, a large area of ​​ventilation in the microwave heating chamber can blow away the odor without dead corners. The positioning odor absorption method of the present invention is more energy-saving and quickly discharges the odorous gas.

[0017] 2. The present invention uses a row of tank boxes filled with purifiers to absorb and treat odorous airflow. When the odorous airflow passes through a tank box, the internal purifier gradually becomes saturated and fails while absorbing and treating the odor. Before failure, the transported odorous airflow automatically changes its path and selects a new tank box for injection, which is equivalent to timely replacement of the purification liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the location of the pressure relief purifier.

[0020] Figure 3 This is a schematic diagram of the location of the power conversion device.

[0021] Figure 4 Schematic diagram of the exhaust bracket plate position.

[0022] Figure 5 It is a schematic diagram of the pressure relief purifier structure.

[0023] Figure 6 It is a schematic diagram of the ventilation part structure.

[0024] Figure 7 Schematic diagram of the exhaust bracket structure.

[0025] Figure 8 It is a schematic structural diagram of an integrated box device.

[0026] Figure 9 It is a schematic structural diagram of a hook member.

[0027] Figure 10 It is a schematic structural diagram of an inlet pipe group.

[0028] Figure 11 It is a schematic structural diagram of a drain pipe group.

[0029] Figure 12 It is a schematic structural diagram of a power conversion tool.

[0030] Figure 13 It is a schematic structural diagram of a magnetic connection device.

[0031] Figure 14 It is a schematic structural diagram of a pressure release device.

[0032] Figure 15 It is a schematic structural diagram of a spring group.

[0033] In the figure: digestion instrument cabinet body 1, exhaust bracket tray 2, digestion tank 3, pressure relief purifier 4, ventilator 5, power conversion tool 6, bracket shaft 7, disc gear 8, odor sensor 9, ventilation part 10, neck pipe 11, transfer pipe 12, integrated box device 13, drain pipe group 14, inlet pipe group 15, purification unit 16, fan 17, wind column box 18, fan shaft 19, tray 20, L-shaped flat pipe 21, cover cylinder 22, annular channel 23, integrated shaft 24, concave box 25, hook member 26, S-shaped elastic piece 27, aeration box 28, tank box 29, hook body 30, cam 31, Z-shaped plate 32, guide seat 33, back pressure elastic piece 34, air supply unit cylinder 35, cross column box 36, plugging cylinder 37, one-way valve 38, air release valve 39, shunt pipe 40, collection pipe 41, return air unit cylinder 42, tail control shaft 43, limit frame 44, reversing shaft 45, pressure release device 46, magnetic connection device 47, first worm 48, auxiliary plate 49, electromagnet 50, second worm 51, driving group 52, driving gear 53, disconnection control gear 54, head position shaft 55, T seat 56, connection control shaft 57, direction seat 58, return elastic piece 59, middle position shaft 60, spring group 61, speed reduction gear 62, same path gear 63, same path shaft 64, stop elastic piece 65, spring 66, intermittent gear body 67, limit convex plate 68. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the technical solutions in the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0035] See also Figures 1 to 15 The present invention provides a technical solution: a microwave digestion instrument with a pressure relief mechanism, comprising: A digestion instrument cabinet 1, wherein the middle of the digestion instrument cabinet 1 is provided with a microwave heating chamber, and the bottom of the digestion instrument cabinet 1 is provided with a pressure relief chamber; A plurality of digestion tanks 3 are evenly arranged in a ring and an exhaust bracket plate 2 is provided to support the digestion tanks 3. The exhaust bracket plate 2 is arranged in a microwave heating chamber. The sample and the digestion solution contained in the digestion tanks 3 react under microwave heating. The exhaust bracket plate 2 absorbs and transfers the odorous gas overflowing from the gas outlet of the digestion tanks 3. A pressure relief purifier 4 is arranged in the pressure relief chamber of the digestion instrument cabinet 1. The pressure relief purifier 4 makes the environment of the microwave heating chamber of the digestion instrument cabinet 1 sanitary and stable by odor purification and automatic pressure relief; A ventilator 5 is arranged in the pressure relief chamber of the digestion instrument cabinet 1, and the ventilator 5 is connected between the pressure relief purifier 4 and the exhaust bracket plate 2; A power conversion device 6, which is installed on the pressure relief purifier 4; A bracket shaft 7 fixed at the middle of the bottom end of the exhaust bracket disc 2 and a disc gear 8 fixedly sleeved on the bracket shaft 7, the disc gear 8 transmits the power converter 6 and the ventilator 5 respectively.

[0036] refer to Figure 6 It is understood that the ventilator 5 includes: a ventilating portion 10, a neck pipe 11 communicating between one end of the ventilating portion 10 and the exhaust bracket plate 2, and a transfer pipe 12 communicating with the other end of the ventilating portion 10; The odor sensor 9 is mounted on the neck tube 11.

[0037] refer to Figure 5 It is understood that the pressure relief purifier 4 includes: The integrated box device 13, the discharge pipe group 14 and the inlet pipe group 15 installed outside the integrated box device 13, one end of the inlet pipe group 15 is connected with the transfer pipe 12, and the power conversion device 6 transmits the inlet pipe group 15 and the integrated box device 13 respectively; A row of purification units 16 is arranged in the integrated box device 13, and the row of purification units 16 purifies the odorous airflow in turn.

[0038] refer to Figure 5 It is understood that the ventilation part 10 includes a wind column box 18 fixedly connected between the neck tube 11 and the transfer tube 12, a fan 17 arranged in the wind column box 18, and a fan shaft 19 fixed in the middle of the fan 17, one end of the fan shaft 19 extends to the outside of the wind column box 18, and the fan shaft 19 is meshed with the disc gear 8 through a gear arranged on it.

[0039] refer toFigure 7 It is understood that the exhaust bracket plate 2 includes a tray 20 for supporting and driving the digestion tank 3 to move around, a plurality of evenly arranged L-shaped flat tubes 21 passing through the tray 20, a ring channel 23 arranged below the tray 20, and a cover tube 22 arranged outside the ring channel 23. The ring channel 23 and the movable cover tube 22 cooperate to form a ring box, and one end of the neck tube 11 is connected to the ring box by passing through a shell on one side of the cover tube 22, one end of the L-shaped flat tube 21 is connected to the ring box by passing through the shell of the ring channel 23, and the other end of the L-shaped flat tube 21 faces the odor overflow port position on the digestion tank 3, and the lower middle part of the tray 20 is fixedly connected to the bracket shaft 7.

[0040] refer to Figure 8 It is understood that the integrated box device 13 includes a concave box 25 in the shape of a concave folded shell, a row of hooks 26 arranged at the bottom of the inner cavity of the concave box 25, and an integrated shaft 24 that establishes transmission with the row of hooks 26, the integrated shaft 24 is movably sleeved in a through hole opened on a protrusion set on the concave box 25, the purification unit 16 includes a tank box 29 that is slidably inserted into a square groove set inside the concave box 25, an S-shaped spring 27 fixed on the insertion end of the tank box 29, and an aeration box 28 fixed in the tank box 29, the tank box 29 is filled with a purification liquid for absorbing odors, a plurality of exhaust holes are opened on the end of the aeration box 28 inserted into the purification liquid, and the other end of the aeration box 28 extends to the top position of the tank box 29.

[0041] The hook member 26 includes a guide seat 33 fixed on the concave box 25, a Z-shaped plate 32 sliding through a plate hole opened on the guide seat 33, a hook body 30 correspondingly fixed on each slot box 29, a back pressure spring 34 contacted by one end of the Z-shaped plate 32, and a cam 31 for moving the Z-shaped plate 32, one end of the back pressure spring 34 is fixed on the guide seat 33, and the other end of the Z-shaped plate 32 is clamped with the hook body 30. A row of cams 31 is fixed on the integrated shaft 24, and the tip of each cam 31 points to a different direction, and multiple directions are evenly arranged in a ring state, refer to Figure 9, the Z-shaped plate 32 is inserted into the groove formed in the hook body 30. The insertion end of the hook body 30 is provided with an inclined surface for dislocation sliding with the Z-shaped plate 32. When the Z-shaped plate 32 is toggled downwards, the clamping state between the hook body 30 and the Z-shaped plate 32 can be broken. In the present invention, four tank boxes 29 are provided, corresponding to four cams 31 fixed on the integrated shaft 24. Each time the integrated shaft 24 rotates by 90 degrees. In this way, when the integrated shaft 24 rotates once, one cam 31 will toggle the Z-shaped plate 32, thereby breaking the clamping between the hook body 30 and the Z-shaped plate 32. Subsequently, the S-shaped elastic piece 27 rebounds to push the tank box 29, and a part of the tank box 29 extends out of the concave box 25. After the staff sees the extended part of the tank box 29, they can know that the purification liquid inside the tank box 29 has adsorbed too much odor and the purification liquid inside needs to be pumped out in time for replacement. Each time the integrated shaft 24 rotates, only one cam 31 toggles the corresponding Z-shaped plate 32, and the remaining cams 31 rotate progressively without external toggling.

[0042] The inflow pipe group 15 includes a cross-column box 36, a row of plugging cylinders 37 movably sleeved outside the cross-column box 36, and air supply unit cylinders 35 correspondingly penetrating through the side shells of each plugging cylinder 37. One end of the air supply unit cylinder 35 passes through the shell of the concave box 25 and is in contact and communication with an aeration box 28. An exhaust hole is formed in the side shell of the cross-column box 36 to selectively communicate with the air supply unit cylinder 35, and the pointing directions of the exhaust holes are different and evenly annularly arranged. A circular hole for movably sleeving the end of the transfer pipe 12 is formed at one end of the cross-column box 36. Refer to Figure 10 , one air hole on the cross-column box 36 faces downwards to communicate with the air supply unit cylinder 35 relatively, and the remaining air holes on the cross-column box 36 are blocked by the plugging cylinder 37. In this way, the odor-containing air injected into the cross-column box 36 is injected into the air supply unit cylinder 35 through the air holes, and then injected into the purification liquid through the aeration box 28. The purification liquid absorbs the odor in the air flow. The continuous odor air flow is treated by the purification liquid, and the purification liquid gradually fails. Therefore, when the odor air flow is injected into the tank box 29 for a continuous specified time, a replacement mechanism will be automatically triggered, that is Figure 10The cross column box 36 in the recessed box 25 is driven to rotate ninety degrees, so that a new air hole on the cross column box 36 is connected to the air supply unit tube 35, and the air hole of the previously connected cross column box 36 is rotated away. The cross column box 36 no longer injects odorous air into the previous tank box 29, but chooses to inject odorous air into the new tank box 29. That is, the purification liquid in the previous tank box 29 has expired, and the fresh purification liquid in the new tank box 29 is used to deal with the odorous airflow. At the same time, the previous tank box 29 will pop out of the recessed box 25, so that the staff can understand the situation. Here corresponds to the introduction of the tank box 29 popping up mentioned in the previous paragraph. The discharge pipe group 14 includes a collecting pipe 41, a row of return air unit tubes 42 fixedly connected to the collecting pipe 41, a branch pipe 40 fixedly connected to the collecting pipe 41 at one end, an air release valve 39 installed at the other end of the branch pipe 40, and a valve 39 installed at one end of the collecting pipe 41. A one-way valve 38 is installed, and one end of the return air unit cylinder 42 extends to the interior of the tank box 29 after passing through the concave box 25 shell. After the odorous airflow is injected into the purified liquid, the odor is absorbed, and the clean airflow is injected into the collecting pipe 41 through the return air unit cylinder 42. The one-way valve 38 and the air release valve 39 are both existing technical instruments. One end of the one-way valve 38 is connected to the collecting pipe 41, and the other end is connected to the folded tube. The folded tube re-injects the clean airflow into the microwave heating chamber of the digestion instrument cabinet 1. The ambient air pressure in the microwave heating chamber of the digestion instrument cabinet 1 is stable. The airflow is discharged through the L-shaped flat tube 21, and after a series of transportation, it flows back into the microwave heating chamber to complete a cycle. Because the odorous air overflows from the digestion tank 3, the air pressure in the microwave heating chamber rises, thereby automatically causing pressure relief. The pressure relief point is the air release valve 39, and the air discharged after pressure relief is clean air.

[0043] The power conversion tool 6 includes a limit frame 44 fixed on the concave box 25, and a tail control shaft 43, a reversing shaft 45 and a pressure-generating device 46 supported on the limit frame 44. One end of the tail control shaft 43 is meshed and connected to the outer gear ring on the cross column box 36 through a fixed gear, and the other end of the tail control shaft 43 is meshed and connected to the bevel gear fixed at one end of the reversing shaft 45 through a fixed bevel gear. The other end of the reversing shaft 45 is connected to the pressure-generating device 46. The power conversion tool 6 also includes a first worm 48 and a magnetic connection device 47. One end of the first worm 48 is meshed and connected to the disc gear 8 through a fixed gear. Then, the other end of the first worm gear 48 and the pressure-generating device 46 are connected to each other through a magnetic connection device 47. The pressure-generating device 46 includes a spring group 61 for intermittently releasing power, a center shaft 60 connected to the middle of the spring group 61, a speed reduction gear 62 fixed at one end of the center shaft 60, a co-axial gear 63 connected to the edge of the spring group 61, and a co-axial shaft 64 fixed in the middle of the co-axial gear 63. The edge of the spring group 61 also transmits the reversing shaft 45. The center shaft 60 is movably sleeved in a through hole opened on the limit frame 44. The co-axial shaft 64 passes through the housing of the concave box 25 and is vertically transmitted to the integrated shaft 24.

[0044] refer toFigure 15 It is understood that the spring group 61 is a prior art device. The continuous rotation of the middle shaft 60 causes the spring 66 to contract and store energy. During the energy storage stage of the spring 66, the purified liquid in a tank box 29 is used to treat the odor-containing air. After a period of time, when the spring 66 is saturated with stored energy, it releases pressure externally, triggering subsequent transmission to change the odor air flow path. The purified liquid in a new tank box 29 is used to treat the odor-containing air, and the old tank box 29 pops out from the concave box 25. The spring 66 releases pressure externally to drive the intermittent gear body 67 to rotate. A plurality of limit convex plates 68 are annularly arranged on the intermittent gear body 67. One limit convex plate 68 breaks through the interception of the stop spring piece 65 fixed on the limit frame 44. In this way, after the intermittent gear body 67 rotates rapidly by 90 degrees, it is intercepted by the next limit convex plate 68 again. The intermittent rotation of the intermittent gear body 67 respectively causes the corresponding rotation of the reversing shaft 45 and the same-way gear 63.

[0045] The magnetic connection device 47 includes a secondary plate 49 fixed on the concave box 25, a head position shaft 55 and a second worm 51 supported on the secondary plate 49, a driving gear 53 fixed at one end of the second worm 51, a disconnection control gear 54 driven on one side of the driving gear 53, a driving group 52 supporting the disconnection control gear 54, and an electromagnet 50 fixed on the secondary plate 49. One end of the head position shaft 55 is in meshing transmission connection with the disconnection control gear 54 through a fixed gear. The other end of the head position shaft 55 is in meshing transmission connection with the helical teeth on the first worm 48 through a fixed gear. The helical teeth on the second worm 51 are in meshing transmission connection with the hair-trigger device 46. The disconnection control gear 54 establishes meshing with the driving gear 53 through axial movement. The driving group 52 includes a direction seat 58 fixed on the secondary plate 49, a T seat 56 slidably passing through a square hole opened on the direction seat 58, a driving control shaft 57 movably sleeved at one end in a through hole opened on the T seat 56, and a return spring piece 59 connected between the direction seat 58 and the T seat 56. The other end of the driving control shaft 57 is fixedly connected to the disconnection control gear 54. The T seat 56 is magnetically attracted by the energized electromagnet 50 through a fixed metal disk.

[0046] The digestion instrument cabinet body 1 is a prior art device. The motor mechanism installed in the digestion instrument cabinet body 1 drives the bracket shaft 7 to rotate, and the bracket shaft 7 drives the tray 20 to rotate. At the same time, the digestion instrument cabinet body 1 heats the digestion tank 3 through microwaves. The digestion liquid and the sample in the moving-around digestion tank 3 react. The L-shaped flat tube 21 moves around with the digestion tank 3. The L-shaped flat tube 21 continuously absorbs the air at the top position of the digestion tank 3. Once odor gas overflows in the digestion tank 3, it will be promptly absorbed by the L-shaped flat tube 21, preventing the odor from spreading in the microwave heating chamber. During the process of the air flow in the microwave heating chamber leaving and then re-flowing back to the microwave heating chamber, the rotation of the fan 17 provides power for the air flow transportation. Specifically, the disk gear 8 rotates to drive the fan shaft 19, thereby causing the fan 17 to continuously rotate.

[0047] The specific path of the air flow leaving the microwave heating chamber and then returning: The air in the microwave heating chamber is sucked into the L-shaped flat tube 21, then injected into the bottom ring box, and then enters the air column box 18 through the neck tube 11. Subsequently, it is injected into the cross-column box 36 through the transfer tube 12 and then injected into one of the trough boxes 29. If there is an odor in the air flow, the odor will be absorbed and treated by the purification liquid. The clean air returns to the microwave heating chamber through the collection tube 41. If the internal air pressure in the microwave heating chamber rises, the air flow in the collection tube 41 can also be automatically discharged through the air release valve 39, so that the internal air pressure in the microwave heating chamber is stabilized within the specified range.

[0048] If there is no odor gas overflowing from the digestion tank 3, there is no odor air in the air flow passing through the neck tube 11, and the odor sensor 9 does not detect an odor, it will not trigger the subsequent timing mechanism. On the contrary, if there is an odor air flow leaving the microwave heating chamber, it will be detected by the odor sensor 9 immediately. The odor sensor 9 transmits the information to the host terminal on the digestion instrument cabinet 1, and the terminal controls the electromagnet 50 to be energized. Then, the electromagnet 50 magnetically attracts the T seat 56, causing the latching shaft 57 and the disconnection control gear 54 to move axially. The disconnection control gear 54 and the driving gear 53 establish meshing, so that synchronous rotation is achieved between the head position shaft 55 and the second worm 51. The disk gear 8 drives the first worm 48, and then drives the reduction gear 62 through the head position shaft 55 and the second worm 51. The middle position shaft 60 rotates slowly, causing the spring group 61 to release power intermittently. As previously introduced, the energy storage stage of the middle position shaft 60 lasts for a period of time, and this period corresponds to the continuous injection of odor air flow into one of the trough boxes 29. After the middle position shaft 60 is saturated with energy storage, it releases quickly, and the release corresponds to a replacement, that is, the injection of odor air flow into this trough box 29 stops, and the air flow changes the conveying path. Because the cross-column box 36 rotates, a new air hole is connected to the air supply unit cylinder 35 at the bottom, and the previous air hole is blocked. The replacement of the odor air flow to a new trough box 29 for injection can prevent the saturated purification agent from being unable to effectively absorb and treat the passing odor air flow.

[0049] The cross-column box 36 rotates quickly by 90 degrees because the spring group 61 quickly releases power, driving the reversing shaft 45 to rotate, and then driving the cross-column box 36 through the tail control shaft 43. In addition, the spring group 61 releasing power also drives the same-way gear 63, and then the same-way shaft 64 drives the integrated shaft 24. Figure 9 The integrated shaft 24 in it rotates quickly by 90 degrees. As previously introduced, the latching state in a hook member 26 will be broken, and then the S-shaped elastic piece 27 rebounds to push the trough box 29, and the trough box 29 extends out of the concave box 25. The purification liquid inside this extended trough box 29 is already saturated and cannot effectively continue to absorb odors.

[0050] The transmission is established inside the magnetic connection device 47 mentioned above, and then it is driven bidirectionally outward through the pressing device 46. The reason for this process is that the odor sensor 9 detects the odor-containing air, which triggers the timing of the purification treatment time. When the odor gas no longer overflows from the digestion tank 3 and the odor sensor 9 does not detect the odor-containing air flow, the timing automatically ends, the corresponding transmission automatically stops, and the energy storage in the spring group 61 automatically stops. When the odor sensor 9 detects the odor again, the energy storage in the corresponding spring group 61 continues, the purification treatment time continues to be timed, and when the timing accumulates to the specified value, the odor-containing air flow discharged from the cross-column box 36 is automatically replaced with a new tank box 29 injected.

[0051] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A microwave digestion instrument with a pressure relief mechanism, characterized in that, Included are: A digestion instrument cabinet, wherein the middle of the digestion instrument cabinet is provided with a microwave heating chamber, and the bottom of the digestion instrument cabinet is provided with a pressure relief chamber; A plurality of digestion tanks are evenly arranged in a circle and an exhaust bracket plate is provided to support the digestion tanks. The exhaust bracket plate is arranged in a microwave heating chamber. The samples and digestion liquid contained in the digestion tanks react under microwave heating. The exhaust bracket plate absorbs and transfers the odorous gas overflowing from the upper exhaust port of the digestion tank. A pressure relief purifier is arranged in the pressure relief chamber of the digestion instrument cabinet. The pressure relief purifier makes the environment of the microwave heating chamber of the digestion instrument cabinet sanitary and stable through odor purification and automatic pressure relief; A ventilator is arranged in the pressure relief chamber of the digestion instrument cabinet, and the ventilator is connected between the pressure relief purifier and the exhaust bracket plate; A power converter, wherein the power converter is installed on the pressure relief purifier; A bracket shaft fixed at the middle of the bottom end of the exhaust bracket disc and a disc gear with a fixed sleeve on the bracket shaft, the disc gear respectively transmits the power converter and the ventilator.

2. The microwave digestion instrument with a pressure relief mechanism according to claim 1, characterized in that: The ventilator comprises: a ventilating portion, a neck pipe communicating between one end of the ventilating portion and the exhaust bracket plate, and a transfer pipe communicating with the other end of the ventilating portion; Odor sensor mounted on the neck tube.

3. The microwave digestion instrument with a pressure relief mechanism according to claim 2, wherein: The pressure relief purifier comprises: The integrated box device, the discharge pipe group and the inlet pipe group installed outside the integrated box device, one end of the inlet pipe group is connected with the transfer pipe, and the power conversion tool transmits the inlet pipe group and the integrated box device respectively; A row of purification units is arranged in the integrated box device, and the row of purification units purifies the odorous airflow in turn.

4. The microwave digestion instrument with a pressure relief mechanism according to claim 2, characterized in that: The ventilation part includes a wind column box fixedly connected between the neck tube and the transfer tube, a fan arranged in the wind column box, and a fan shaft fixed in the middle of the fan, one end of the fan shaft extends to the outside of the wind column box, and the fan shaft is meshed and connected with the disc gear by a gear arranged on the fan shaft.

5. The microwave digestion instrument with a pressure relief mechanism according to claim 2, characterized in that: The exhaust bracket plate includes a tray for supporting and driving the digestion tank to move around, a plurality of evenly arranged L-shaped flat tubes passing through the tray, a ring channel arranged below the tray, and a cover tube arranged outside the ring channel. The ring channel and the movable cover tube cooperate to form a ring box, and one end of the neck tube is connected to the ring box by passing through a shell body on one side of the cover tube, one end of the L-shaped flat tube is connected to the ring box by passing through the ring channel shell body, the other end of the L-shaped flat tube faces the odor overflow port position on the digestion tank, and the lower middle part of the tray is fixedly connected to the bracket shaft.

6. The microwave digestion instrument with a pressure relief mechanism according to claim 3, characterized in that: The integrated box device includes a concave box in the shape of a concave folded shell, a row of hooks arranged at the bottom of the inner cavity of the concave box, and an integrated shaft that establishes transmission with the row of hooks, the integrated shaft is movably sleeved in a through hole opened on a protrusion arranged on the concave box, the purification unit includes a tank box that is slidably inserted into a square groove set inside the concave box, an S-shaped spring fixed on the insertion end of the tank box, and an aeration box fixed in the tank box, the tank box is filled with a purification liquid for absorbing odors, a plurality of exhaust holes are opened on the end of the aeration box inserted into the purification liquid, and the other end of the aeration box extends to the top opening of the tank box.

7. A microwave digestion instrument with a pressure relief mechanism according to claim 6, characterized in that: The hook member includes a guide seat fixed on the concave box, a Z-shaped plate sliding through a plate hole opened on the guide seat, a hook body fixed corresponding to each slot box, a return pressure spring sheet contacted by one end of the Z-shaped plate, and a cam for moving the Z-shaped plate, one end of the return pressure spring sheet is fixed on the guide seat, and the other end of the Z-shaped plate is clamped with the hook body, a row of cams is fixed on the integrated shaft, the tip of each cam points to a different direction, and multiple directions are in a uniform ring state.

8. The microwave digestion instrument with a pressure relief mechanism according to claim 6, wherein: The inlet pipe group includes a cross-column box, a row of blocking tubes with movable sleeves on the outside of the cross-column box, and an air supply unit tube correspondingly passing through the shell of one side of each blocking tube. One end of the air supply unit tube passes through the concave box shell and is connected to an aeration box. An exhaust hole is opened on the side shell of the cross-column box to selectively connect with the air supply unit tube, and the direction of the exhaust hole is evenly arranged in a circle. A circular hole is opened at one end of the cross-column box for movable sleeve connection with the end of the transfer pipe. The discharge pipe group includes a collecting pipe, a row of return air unit tubes fixedly connected to the collecting pipe, a branch pipe one end of which is fixedly connected to the collecting pipe, a bleed valve installed at the other end of the branch pipe, and a one-way valve installed at one end of the collecting pipe. One end of the return air unit tube passes through the concave box shell and extends to the interior of the tank box.

9. The microwave digestion instrument with a pressure relief mechanism according to claim 8, wherein: The power conversion device includes a limit frame fixed on the concave box, and a tail control shaft, a reversing shaft and a pressing device supported on the limit frame, one end of the tail control shaft is meshed and connected with the outer gear ring on the cross column box through a fixed gear, the other end of the tail control shaft is meshed and connected with the bevel gear fixed at one end of the reversing shaft through a fixed bevel gear, and the other end of the reversing shaft is connected to the pressing device. The power conversion device also includes a first worm and a magnetic connection device, one end of the first worm is meshed and connected with the disc gear through a fixed gear, and a transmission is established between the other end of the first worm and the pressing device through the magnetic connection device. The pressing device includes a spring group for intermittently releasing power, a middle shaft connected to the middle of the spring group, a speed reduction gear fixed at one end of the middle shaft, a co-stroke gear connected to the edge of the spring group, and a co-stroke shaft fixed in the middle of the co-stroke gear. The edge of the spring group also drives the reversing shaft, and the middle shaft is movably sleeved in a through hole opened on the limit frame. After passing through the concave box shell, the co-stroke shaft is vertically transmitted with the integrated shaft.

10. The microwave digestion instrument with a pressure relief mechanism according to claim 9, characterized in that: The magnetic connection device includes a sub-plate fixed on the concave box, a head position shaft and a second worm supported on the sub-plate, a driving gear fixed at one end of the second worm, a break control gear transmitted on one side of the driving gear, a lever group supporting the break control gear, and an electromagnet fixed on the sub-plate. One end of the head position shaft is meshed and connected to the break control gear through a fixed gear, the other end of the head position shaft is meshed and connected to the helical teeth on the first worm through a fixed gear, the helical teeth on the second worm are meshed and connected to the pressing device, and the break control gear establishes meshing with the driving gear through axial movement. The lever group includes a direction seat fixed on the sub-plate, a T seat sliding through a square hole opened in the direction seat, a lever control shaft with one end movably sleeved in a through hole opened in the T seat, and a reset spring connected between the direction seat and the T seat. The other end of the lever control shaft is fixedly connected to the break control gear, and the T seat is magnetically attracted by an energized electromagnet through a fixed metal disk.

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