CN113230674A

CN113230674A - Drug is surplus blood processing apparatus for clinical trial

Info

Publication number: CN113230674A
Application number: CN202110639704.3A
Authority: CN
Inventors: 李艳娜; 谢亚静; 李孟媛
Original assignee: Luoyang Central Hospital
Current assignee: Luoyang Central Hospital
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2021-08-10
Anticipated expiration: 2041-06-09
Also published as: CN113230674B

Abstract

A medicament clinical trial uses the surplus blood processing unit, including the closed cylindrical box, the middle part in the said cylindrical box has a powder scraping organization, and should scrape the powder organization and divide the cylindrical box into power cavity and upper working chamber of the lower part, there are splitter plates in the vertical direction in the working chamber, the splitter plate divides the working chamber into the heating chamber with electric heating wire on the left side and powder processing chamber on the right side; scrape the scraper blade rotation under actuating mechanism's drive that powder mechanism surface was equipped with to at the rotation in-process, scrape into the powder processing chamber with the powder thing through division board bottom and the clearance of scraping powder mechanism, powder thing processing chamber bottom has the powder passageway in intercommunication power chamber, and has an open-top's firing mechanism in the power chamber. The invention adopts the integrated treatment of atomization, drying and firing to the residual blood, thereby directly and thoroughly treating the residual blood, and has high automation degree, clean treatment and no waste gas pollution.

Description

Drug is surplus blood processing apparatus for clinical trial

Technical Field

The invention relates to the field of clinical tests of medicines, in particular to a residual blood treatment device for clinical tests of medicines.

Background

In the clinical test of the medicine, the blood sample of the volunteer who is used for medicine is often required to be extracted for index test, after the blood sample is extracted, the serum is obtained through centrifugal separation and is sent to a third-party testing mechanism for test, the rest blood sample is clinically called as residual blood, the residual blood generally has no test value and is automatically processed by a clinical test center;

because the components in the residual blood are water and organic matters, the residual blood can become a 'culture medium' for breeding bacteria and germs if the residual blood is directly discharged to a sewer without being treated; the existing treatment method is that the residual blood and the residual blood are directly encapsulated in a blood sampling tube to be used as medical waste for centralized treatment, and the centralized treatment of the medical waste is usually carried out by special personnel, generally collected and accumulated in a warehouse after work and then collected by a special medical waste recycling company;

this approach has the following problems:

1) the blood collection tube is not tightly sealed, so that residual blood is leaked out to influence the environment;

2) after the storage time in a warehouse is long, the deterioration of the residual blood and the abnormal smell are caused, particularly in summer with high temperature;

3) when the blood collection tube is subsequently recovered, the difficulty and the workload of cleaning the dried and residual blood in the blood collection tube are increased.

Disclosure of Invention

In order to solve the problems existing in the prior art that the residual blood from which the serum is separated is treated as medical waste, the invention provides a residual blood treatment device for a medical clinical test, which can automatically burn the residual blood, thereby avoiding the problems.

The technical scheme adopted by the invention for solving the technical problems is as follows: a medicament clinical trial uses the surplus blood processing unit, including the closed cylindrical box, the middle part in the said cylindrical box has a powder scraping organization, and should scrape the powder organization and divide the cylindrical box into power cavity and upper working chamber of the lower part, there are splitter plates in the vertical direction in the working chamber, the splitter plate divides the working chamber into the heating chamber with electric heating wire on the left side and powder processing chamber on the right side; the top of the heating cavity is provided with an atomizing nozzle which sprays the residual blood into the heating cavity in a mist form and heats and dehydrates the residual blood in the heating cavity, the formed powder falls on the surface of the powder scraping mechanism, a scraper plate arranged on the surface of the powder scraping mechanism rotates under the driving of the driving mechanism, and in the rotation process, the powder is scraped into the powder processing chamber through a gap between the bottom of the partition plate and the powder scraping mechanism;

the powder processing chamber bottom has the powder passageway of intercommunication power chamber, and has an open-top's firing mechanism in the power chamber, and the open-top of this firing mechanism is connected with powder processing chamber bottom, forms the firing chamber that covers the powder passageway in it, is provided with gas nozzle and air inlet in firing mechanism, and after the ignition of gas nozzle, the powder that will fall into the firing intracavity through the powder passageway is fired and is clear away.

As an optimized scheme of the device for treating the residual blood for the clinical drug test, the powder scraping mechanism comprises a horizontally arranged circular metal bearing plate which divides a cylindrical box body into a lower power cavity and an upper working cavity, the projection of the surface of a north separation plate of the metal bearing plate is divided into a powder scraping area positioned in a heating cavity and a powder leaking area positioned in a powder treating chamber, and powder channels are distributed on the powder leaking area.

As another optimization scheme of the device for treating the residual blood for the clinical test of the medicine, the powder channel is a through hole densely distributed on the powder leakage area.

As another optimization scheme of the device for treating the residual blood for the clinical test of the medicine, the powder channel is a plurality of through grooves distributed on the powder leakage area.

As another optimized scheme of the device for treating the residual blood for the clinical drug test, the atomizing nozzle is arranged at the bottom of a closed mixing cylinder, and the top of the mixing cylinder is provided with an openable opening so as to pour the residual blood into the mixing cylinder through the opening; the mixing cylinder is internally provided with a stirrer or an ultrasonic stirring component for uniformly stirring the residual blood.

As another optimized scheme of the device for treating the residual blood for the clinical drug tests, a partition plate is arranged at the upper part of the powder treatment chamber, the partition plate divides the upper part of the powder treatment chamber into a closed smoke treatment cavity, a gas purification and absorption mechanism is arranged in the smoke treatment cavity, the gas purification and absorption mechanism comprises a primary purification pipe, the middle of the primary purification pipe is filled with an activated carbon adsorption bag, one end of the primary purification pipe is communicated with the inside of the powder treatment chamber, so that gas generated by the whole residual blood treatment device is introduced into the primary purification pipe and is adsorbed by the activated carbon adsorption bag and then discharged.

As another optimization scheme of the above device for treating the residual blood for the clinical drug testing, the gas purification and absorption mechanism further comprises a secondary purification pipe filled with a molecular sieve adsorbent bag at the middle part, and the secondary purification pipe is connected in series with the tail part of the primary purification pipe, so that the gas generated by the whole device for treating the residual blood is discharged after being adsorbed twice by the activated carbon adsorption bag and the molecular sieve adsorbent bag in sequence.

As another optimized scheme of the device for treating the residual blood for the clinical drug tests, the gas purification and absorption mechanism further comprises a closed purification water tank filled with purified water, the exhaust end of the primary purification pipe extends into the purified water in the purification water tank to enable the gas to escape after being purified by the purified water, and the air inlet end of the secondary purification pipe is communicated with the top of the purification water tank to enable the gas purified by the purified water to enter the secondary purification pipe.

As another optimized scheme of the device for treating the residual blood for the clinical drug test, the burning mechanism comprises a conical shell with an open top, the open top of the shell is connected with the bottom of the powder treatment chamber to form a burning cavity in which the powder passage is covered, and the gas burner extends into the burning cavity from the conical tip of the shell.

As another optimized scheme of the device for treating the residual blood for the clinical drug test, a residual ash collecting mechanism is arranged at the conical tip end of the shell, the residual ash collecting mechanism comprises an annular body arranged around a support of the gas burner, the top of the annular body and the inner surface of the shell form an inclined plane, and a plurality of ash discharging channels vertically penetrating through the top and the bottom of the annular body are arranged in the annular body; the detachable ash storage box is arranged below the annular body, the ash storage box is formed by splicing two symmetrical halves, and the top wall and the bottom wall of the ash storage box are respectively inserted into the annular body and the annular groove of the pillar side wall of the gas burner.

Compared with the prior art, the invention has the following beneficial effects:

1) because the components in the residual blood are water and organic matters, the invention adopts the integrated treatment of atomization, drying and firing to the residual blood, thereby directly and thoroughly treating the residual blood, and has high automation degree, clean treatment and no waste gas pollution;

2) because the organic matter in the residual blood can produce the powdery thing after drying, these powdery things are protein in nature and are abundant, discharge directly, still can become the nourishment that the bacterium breeds, the invention has set up and scraped the powder mechanism, scrape powder mechanism can transfer organic powdery thing produced to firing the intracavity, and rely on the fuel gas to light, thus process the intermediate powdery thing produced in the course of processing the residual blood;

3) in order to prevent the peculiar smell generated in the drying and firing processes, the smoke treatment cavity is arranged above the firing cavity, and the core of the smoke treatment cavity is a primary purification pipe filled with an activated carbon adsorption bag, so that the gas generated by drying and firing is adsorbed by the activated carbon adsorption bag in the primary purification pipe and then is discharged, and the peculiar smell generated by firing organic matters such as protein is effectively eliminated; in order to improve the purification effect, a secondary purification pipe connected with the purification pipe in series is arranged, and a molecular sieve adsorption bag is filled in the secondary purification pipe, so that the gas is subjected to secondary purification in the discharge process; in order to further improve the purification effect, a purification water tank can be arranged between the primary purification pipe and the secondary purification pipe, and the purification water tank not only can play a role in purification, but also can cool the exhaust gas;

4) the invention is characterized in that the residual ash collecting mechanism is arranged below the firing cavity, the core of the residual ash collecting mechanism is an annular body with an ash discharging hole channel and a detachable ash storage box, because the bottom of the firing cavity is conical, the ash residue generated by firing can fall into the ash storage box along the ash discharging hole channel under the action of gravity for accumulation, and after the residual ash collecting mechanism is used for a period of time, the ash storage box only needs to be taken down for cleaning; and the residual ash collecting mechanism can be communicated with a compressed air pipe, so that the cleaning of internal pore channels is realized, and the generation of blockage is prevented.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a top view of the top of the present invention;

FIG. 3 is a schematic structural diagram of a powder scraping mechanism and a burning mechanism according to the present invention;

FIG. 4 is a schematic top view of an embodiment of a powder scraping mechanism;

FIG. 5 is a schematic top view of another embodiment of a powder scraping mechanism;

FIG. 6 is a schematic structural diagram of the burning mechanism;

FIG. 7 is a schematic structural view of a gas purification and absorption mechanism;

FIG. 8 is a schematic view showing the structure of the residual ash collecting mechanism;

reference numerals: 1. the device comprises a cylindrical box body, 101, a power cavity, 102, a partition board, 103, a heating cavity, 104, a powder processing chamber, 105, an atomizing spray head, 106, a flue gas processing cavity, 2, a mixing cylinder, 3, a powder scraping mechanism, 301, a scraper blade, 302, a driving mechanism, 303, a powder channel, 304, a powder scraping area, 305, a powder leakage area, 4, a burning mechanism, 401, a burning cavity, 402, a gas burner nozzle, 403, an air inlet, 5, a gas purification and absorption mechanism, 501, a primary purification pipe, 502, an activated carbon adsorption bag, 503, a purification water tank, 504, a molecular sieve adsorbent bag, 505, a secondary purification pipe, 6, a residual ash collection mechanism, 601, an annular body, 602, an ash discharge duct, 603, an ash storage box, 604, a bottom wall, 605 and a top wall.

Detailed Description

The technical solution of the present invention is further described in detail with reference to the following specific embodiments, and the parts of the present invention that are not described in the following embodiments, such as the structure and the installation manner of the atomizer 105, the selection, the installation and the control manner of the driving mechanism 302, the control, the air supply and the accessories of the gas burner 402, and the stirrer or the ultrasonic stirring component disposed inside the mixing cylinder 2, are all the prior art, and are not described in detail herein.

Example 1

As shown in fig. 1, a device for treating residual blood for a drug clinical test comprises a closed cylindrical box body 1, wherein a powder scraping mechanism 3 is arranged in the middle of the inside of the cylindrical box body 1, the powder scraping mechanism 3 divides the inside of the cylindrical box body 1 into a power cavity 101 at the lower part and a working cavity at the upper part, a partition plate 102 is arranged in the vertical direction in the working cavity, and the working cavity is divided into a heating cavity 103 with an electric heating wire at the left side and a powder treatment chamber 104 at the right side by the partition plate 102; the top of the heating cavity 103 is provided with an atomizing nozzle 105, the atomizing nozzle 105 sprays the residual blood into the heating cavity 103 in a mist form and heats and dehydrates the residual blood in the heating cavity 103, the formed powder falls on the surface of the powder scraping mechanism 3, a scraper 301 arranged on the surface of the powder scraping mechanism 3 is driven by a driving mechanism 302 to rotate, and in the rotation process, the powder is scraped into the powder processing chamber 104 through a gap between the bottom of the partition plate 102 and the powder scraping mechanism 3; the driving mechanism 302 is a speed reducer driven by a motor;

the bottom of the powder processing chamber 104 is provided with a powder channel 303 communicated with the power cavity 101, the power cavity 101 is internally provided with a burning mechanism 4 with an open top, the open top of the burning mechanism 4 is connected with the bottom of the powder processing chamber 104 to form a burning cavity 401 covering the powder channel 303, the burning mechanism 4 is internally provided with a gas burner 402 and an air inlet 403, and after the gas burner 402 is ignited, the powder falling into the burning cavity 401 through the powder channel 303 is burned and removed.

The foregoing is a basic embodiment of the present invention, and further modifications, optimizations and limitations can be made on the foregoing, so as to obtain the following examples:

example 2

This embodiment is an improved scheme based on embodiment 1, and the main structure thereof is the same as embodiment 1, and the improvement point is that: as shown in fig. 3, the powder scraping mechanism 3 includes a horizontally arranged circular metal bearing plate which divides the interior of the cylindrical box 1 into a lower power cavity 101 and an upper working cavity, and the projection of the surface of the north separation plate 102 of the metal bearing plate is divided into a powder scraping area 304 located in the heating cavity 103 and a powder leaking area 305 located in the powder processing chamber 104, and the powder channels 303 are distributed on the powder leaking area 305.

In this embodiment, the surface of the metal bearing plate is flat and tightly attached to the scraper 301, the inner end of the scraper 301 is fixed on a rotating shaft, and the rotating shaft is located at the center of the metal bearing plate.

Example 3

The present embodiment is an improved scheme based on embodiment 2, and the main structure of the present embodiment is the same as that of embodiment 2, and the improvement point is that: as shown in fig. 4, the powder channel 303 is a through hole densely distributed on the powder leakage area 305.

Example 4

The present embodiment is another modified scheme based on embodiment 2, and the main structure of the present embodiment is the same as that of embodiment 2, and the improvement point is that: as shown in fig. 5, the powder channel 303 is a plurality of through grooves distributed on the powder leaking region 305.

Example 5

The present embodiment is another modified scheme based on embodiment 1, and the main structure of the present embodiment is the same as that of embodiment 1, and the improvement point is that: as shown in fig. 1 and 2, the atomizer 105 is disposed at the bottom of a closed mixing cylinder 2, and the top of the mixing cylinder 2 has an openable opening for pouring the residual blood into the mixing cylinder 2; the mixing cylinder 2 has a stirrer or an ultrasonic stirring unit for uniformly stirring the residual blood therein.

Example 6

The present embodiment is another modified scheme based on embodiment 1, and the main structure of the present embodiment is the same as that of embodiment 1, and the improvement point is that: as shown in fig. 7, a partition is disposed on the upper portion of the powder processing chamber 104, the partition divides the upper portion of the powder processing chamber 104 into a closed flue gas processing chamber 106, a gas purification and absorption mechanism 5 is disposed in the flue gas processing chamber 106, the gas purification and absorption mechanism 5 includes a primary purification pipe 501 filled with an activated carbon adsorption bag 502 at the middle portion, one end of the primary purification pipe 501 is communicated with the powder processing chamber 104, so that the gas generated by the whole blood treatment device is introduced into the primary purification pipe 501, and is adsorbed by the activated carbon adsorption bag 502 and then discharged.

In this embodiment, the primary cleaning pipe 501 is curved in an S-shape, has an inlet end and an outlet end, and spirals as much as possible throughout the flue gas treatment chamber 106, extending its length, and further extending the travel of the generated gas through the activated carbon adsorption packs 502 in the primary cleaning pipe 501 as much as possible.

Example 7

This embodiment is an improved scheme based on embodiment 6, and the main structure thereof is the same as that of embodiment 6, and the improvement point is that: as shown in fig. 7, the gas purification and absorption mechanism 5 further includes a secondary purification pipe 505 filled with a molecular sieve adsorbent package 504 at the middle part, and the secondary purification pipe 505 is connected in series to the tail part of the primary purification pipe 501, so that the gas generated by the whole blood treatment device is discharged after passing through the activated carbon adsorption package 502 and the molecular sieve adsorbent package 504 for two times of adsorption in sequence.

In this embodiment, the secondary cleaning tube 505 is in the shape of a curved S having an inlet end and an outlet end and is coiled as far as possible throughout the flue gas treatment chamber 106 to extend its length and thereby extend the travel of the generated gas through the molecular sieve adsorbent packs 504 in the secondary cleaning tube 505 as far as possible.

Example 8

This embodiment is an improved scheme based on embodiment 7, and the main structure thereof is the same as that of embodiment 7, and the improvement point is that: as shown in fig. 7, the gas purification absorption mechanism 5 further includes a sealed purified water tank 503 containing purified water, an exhaust end of the primary purification pipe 501 extends into the purified water in the purified water tank 503 to enable the gas to escape after being purified by the purified water, and an intake end of the secondary purification pipe 505 is communicated with a top of the purified water tank 503 to enable the gas purified by the purified water to enter the secondary purification pipe 505.

In this embodiment, the purified water tank 503 is closed and the purified water level therein is at a distance from the top.

Example 9

The present embodiment is another modified scheme based on embodiment 1, and the main structure of the present embodiment is the same as that of embodiment 1, and the improvement point is that: as shown in fig. 6, the burning mechanism 4 includes a conical housing with an open top, the open top of the housing is connected to the bottom of the powder processing chamber 104 to form a burning cavity 401 enclosing the powder channel 303 therein, and the gas burner 402 extends into the burning cavity 401 from the conical tip of the housing.

In this embodiment, the air inlet 403 is in the top sidewall of the conical housing.

Example 10

This embodiment is an improved scheme based on embodiment 9, and the main structure thereof is the same as that of embodiment 9, and the improvement point is that: as shown in fig. 8, the conical tip of the casing is provided with a residual ash collecting mechanism 6, the residual ash collecting mechanism 6 includes an annular body 601 surrounding the pillar of the gas burner 402, the top of the annular body 601 and the inner surface of the casing form an inclined plane, and a plurality of ash discharge ducts 602 vertically penetrating the top and the bottom of the annular body 601 are arranged in the annular body 601; a detachable ash storage box 603 is arranged below the annular body 601, the ash storage box 603 is formed by splicing two symmetrical halves, and a top wall 605 and a bottom wall 604 of the ash storage box 603 are respectively inserted into annular grooves of the column side walls of the annular body 601 and the gas burner 402.

In this embodiment, the ash storage box 603 is actually an annular cavity structure with an opening at the inner ring formed by splicing a bottom wall 604, a side wall and a top wall 605, and the bottom wall 604 can be horizontal or an inclined structure gradually rising from the outer side to the inner side.

In this embodiment, a flexible tube may be disposed on a side wall of the ash storage box 603, and the flexible tube is communicated with a compressed air source, and the dust discharge duct 602 and the powder passage 303 are dredged by filling compressed air into the flexible tube.

Claims

1. The utility model provides a medicine is surplus blood processing apparatus for clinical trial, includes confined cylinder type box (1), its characterized in that: the powder scraping mechanism (3) is arranged in the middle of the cylindrical box body (1), the powder scraping mechanism (3) divides the interior of the cylindrical box body (1) into a power cavity (101) at the lower part and a working cavity at the upper part, a partition plate (102) is arranged in the working cavity in the vertical direction, and the partition plate (102) divides the working cavity into a heating cavity (103) with an electric heating wire at the left side and a powder processing chamber (104) at the right side; the top of the heating cavity (103) is provided with an atomizing nozzle (105), the atomizing nozzle (105) sprays the residual blood into the heating cavity (103) in a mist form and heats and dehydrates the residual blood in the heating cavity, the formed powder falls on the surface of the powder scraping mechanism (3), a scraper blade (301) arranged on the surface of the powder scraping mechanism (3) rotates under the driving of a driving mechanism (302), and in the rotation process, the powder is scraped into the powder processing chamber (104) through a gap between the bottom of a partition plate (102) and the powder scraping mechanism (3);

powder processing chamber (104) bottom has powder passageway (303) of intercommunication power chamber (101), and has an open-top's ignition mechanism (4) in power chamber (101), the open-top of this ignition mechanism (4) is connected with powder processing chamber (104) bottom, form and cover powder passageway (303) ignition chamber (401) in it, be provided with gas nozzle (402) and air inlet (403) in ignition mechanism (4), after gas nozzle (402) were igniteed, the powder that falls into through powder passageway (303) in ignition chamber (401) was burnt and is clear away.

2. The device for treating the residual blood for the pharmaceutical clinical trial according to claim 1, wherein: scrape whitewashed mechanism (3) including the circular metal loading board that a level set up divide into lower part power chamber (101) and upper portion working chamber in cylinder type box (1), and metal loading board north division board (102) divide into in its surface projection be located heating chamber (103) scrape whitewashed district (304) and be located powder processing chamber (104) leak whitewashed district (305), powder passageway (303) distribute on leaking whitewashed district (305).

3. The device for treating the residual blood for the pharmaceutical clinical trial according to claim 2, wherein: the powder channel (303) is a through hole densely distributed on the powder leakage area (305).

4. The device for treating the residual blood for the pharmaceutical clinical trial according to claim 2, wherein: the powder channel (303) is a plurality of through grooves distributed on the powder leakage area (305).

5. The device for treating the residual blood for the pharmaceutical clinical trial according to claim 1, wherein: the atomizing nozzle (105) is arranged at the bottom of a closed mixing cylinder (2), and the top of the mixing cylinder (2) is provided with an openable opening so as to pour the residual blood into the mixing cylinder (2) through the opening; the mixing cylinder (2) is internally provided with a stirrer or an ultrasonic stirring component for uniformly stirring the residual blood.

6. The device for treating the residual blood for the pharmaceutical clinical trial according to claim 1, wherein: the upper part of the powder processing chamber (104) is provided with a partition board, the partition board separates the upper part of the powder processing chamber (104) into a closed flue gas processing cavity (106), a gas purification and absorption mechanism (5) is arranged in the flue gas processing cavity (106), the gas purification and absorption mechanism (5) comprises a primary purification pipe (501) the middle part of which is filled with an activated carbon adsorption bag (502), one end of the primary purification pipe (501) is communicated with the inside of the powder processing chamber (104), so that gas generated by the whole residual blood processing device is introduced into the primary purification pipe (501) and is exhausted after being adsorbed by the activated carbon adsorption bag (502).

7. The device for treating the residual blood for the clinical trial of the drug according to claim 6, wherein: the gas purification and absorption mechanism (5) further comprises a secondary purification pipe (505) the middle part of which is filled with a molecular sieve adsorbent bag (504), and the secondary purification pipe (505) is connected at the tail part of the primary purification pipe (501) in series, so that gas generated by the whole waste blood treatment device is discharged after being adsorbed by the activated carbon adsorption bag (502) and the molecular sieve adsorbent bag (504) for two times in sequence.

8. The device for treating the residual blood for the pharmaceutical clinical trial according to claim 7, wherein: the gas purification and absorption mechanism (5) further comprises a closed purification water tank (503) filled with purified water, the exhaust end of the primary purification pipe (501) extends into the purified water in the purification water tank (503) to enable the gas to escape after being purified, and the gas inlet end of the secondary purification pipe (505) is communicated with the top of the purification water tank (503) to enable the gas purified by the purified water to enter the secondary purification pipe (505).

9. The device for treating the residual blood for the pharmaceutical clinical trial according to claim 1, wherein: the burning mechanism (4) comprises a conical shell with an opening at the top, the opening at the top of the shell is connected with the bottom of the powder processing chamber (104) to form a burning cavity (401) for covering the powder channel (303), and the gas burner (402) extends into the burning cavity (401) from the conical tip of the shell.

10. The device for treating the residual blood for the pharmaceutical clinical trial according to claim 9, wherein: a residual ash collecting mechanism (6) is arranged at the conical tip of the shell, the residual ash collecting mechanism (6) comprises an annular body (601) surrounding a support of the gas burner (402), the top of the annular body (601) and the inner surface of the shell form an inclined plane, and a plurality of ash discharging pore canals (602) vertically penetrating through the top and the bottom of the annular body (601) are arranged in the annular body (601); a detachable ash storage box (603) is arranged below the annular body (601), the ash storage box (603) is formed by splicing two symmetrical halves, and the top wall (605) and the bottom wall (604) of the ash storage box (603) are respectively inserted into annular grooves in the side walls of the struts of the annular body (601) and the gas burner (402).