Pyrethrum extraction liquid concentrator

Abstract

The invention relates to the technical field of pyrethrum extraction, and discloses a pyrethrum extraction liquid concentrator which comprises a crawler-type soft start structure and an eccentric vibration structure, and an eccentric column which is located in the axial center of a concentration cavity and rotates along with a crawler belt is arranged in the eccentric vibration structure; and the energy-absorbing closed butt joint structure is internally provided with a semispherical buffer cushion for elastically closing the eccentric vibration structure. According to the pyrethrum extraction liquid concentrator, the vibration effect is generated in the center of concentrated liquid by using the rod body which vibrates at high frequency, and the vibration effect can reduce the resistance of bubbles when the bubbles flow in the liquid, so that the time required by bubble diffusion is shortened, and the efficiency of the pyrethrum extraction liquid during concentration is improved; according to the device, the effective vibration of the rod body is realized while the air tightness of the concentration cavity is ensured, so that the smooth proceeding of the concentration work is ensured, the liquid steam diffusion phenomenon is prevented, and the maximum utilization of the pyrethrum extraction liquid is realized.

Description

Technical Field

[0001] The invention relates to the technical field of pyrethrum extraction, in particular to a pyrethrum extract concentrator. Background Art

[0002] After pyrethrum is extracted, the extract needs to be concentrated to obtain a concentrated liquid that meets the standards. When concentrating the pyrethrum extract, a concentrator is needed. Most of the existing concentrators are as follows.

[0003] For example, the Chinese invention patent with the publication number "CN116531773A" discloses "a steam-heated Chinese medicine concentration pot", whose main structure includes a pot body, the pot body includes a top section and a bottom section, the bottom section is a cone with a large upper end and a small lower end, the top section is a cone with a large upper end and a small lower end, the taper of the bottom section is greater than the taper of the top section, the outside of the bottom section is wrapped with an outer shell, a steam heating chamber for heating the bottom section is formed between the outer shell and the bottom section, and the steam heating chamber is provided with a steam input interface. The steam-heated Chinese medicine concentration pot with high heating efficiency solves the problem of low heat utilization rate when concentrating Chinese medicine in the existing pot.

[0004] In actual work, especially during concentration, the steam in the steam heating chamber will heat the bottom of the pot body at high temperature. The heating will cause the liquid in the bottom area of ​​the pot body to generate steam, thereby reducing the water content in the liquid to increase the required liquid concentration. The water vapor in the liquid will float upward in the form of bubbles under the action of buoyancy until it diffuses to the area above the liquid. When the bubbles move in the liquid, the resistance of the liquid itself will slow down the floating speed of the bubbles. In particular, as the liquid concentration increases, the movement speed of the bubbles will become slower, resulting in a serious reduction in the efficiency of the liquid during concentration. Summary of the invention

[0005] (I) Technical Problems Solved In view of the deficiencies in the prior art, the present invention provides a pyrethrum extract concentrator, which utilizes a high-frequency vibrating rod to generate a vibration effect in the center of the concentrated liquid. The vibration effect can reduce the resistance of bubbles when flowing in the liquid, thereby speeding up the time required for bubble diffusion, thereby improving the efficiency of the pyrethrum extract when concentrating. In addition, while ensuring the airtightness of the concentration cavity, the device achieves effective vibration of the rod, thereby ensuring the smooth progress of the concentration work and preventing the occurrence of liquid vapor diffusion, thereby achieving maximum utilization of the pyrethrum extract and solving the above-mentioned technical problems.

[0006] (II) Technical Solution In order to achieve the above-mentioned purpose, the present invention provides the following technical solution: a pyrethrum extract concentrator, comprising a longitudinal concentrating tank with supporting legs installed at the bottom of the circumferential surface, a concentrating cavity arranged inside the longitudinal concentrating tank, an annular heating cavity arranged outside the circumferential surface of the concentrating cavity and not connected to each other, a component placement cavity arranged at the top of the concentrating cavity, a liquid inlet channel arranged on the side of the longitudinal concentrating tank and used for pouring pyrethrum extract into the concentrating cavity, a finished product discharge channel arranged at the bottom of the longitudinal concentrating tank and used for discharging finished products, a valve body installed in the finished product discharge channel and used for controlling the flow of a medium, and a valve body arranged at the top of the concentrating cavity. An extraction steam flow channel is provided on the side of the longitudinal concentrating tank and is used to discharge the high-temperature steam in the concentrating cavity to the outside, a high-temperature steam inlet channel and a steam discharge channel are provided at the end of the longitudinal concentrating tank and are connected to the annular heating chamber, and a driving motor is invertedly installed on the top of the longitudinal concentrating tank. It also includes a crawler-type soft-start structure, in which a plurality of crawlers in an annular array are arranged inside and rotate with the rotor of the driving motor; an eccentric vibration structure, in which an eccentric column is arranged inside and is located in the axial center of the concentrating cavity and rotates with the crawler; and an energy-absorbing closed docking structure, in which a hemispherical buffer pad is arranged inside to elastically seal the eccentric vibration structure.

[0007] Preferably, the high-temperature steam inlet channel and the steam exhaust channel are symmetrically arranged at the locations of the two farthest points in the annular heating chamber.

[0008] Preferably, a funnel-shaped structure is provided at the bottom end of the concentration cavity, and the bottom end of the funnel-shaped structure is connected to the finished product discharge channel.

[0009] Preferably, the crawler-type soft-start structure includes an upper rotating plate and a lower rotating plate located inside the component placement cavity, a rotor fixing groove for fixing the rotor is provided at the center of the upper end surface of the upper rotating plate, and a shaft fixing groove for fixing the shaft is provided at the center of the lower end surface of the lower rotating plate, and a plurality of annular array tracks are embedded at opposite ends of the upper rotating plate and the lower rotating plate.

[0010] Preferably, the crawler track is located in a region between edge structures of the upper rotating plate and the lower rotating plate and an axial center line.

[0011] Preferably, the crawler track is in a relaxed state in an initial state.

[0012] Preferably, the eccentric vibration structure includes a cylindrical shell located in the axial center of the concentration cavity, the bottom end of the cylindrical shell is provided with a hemispherical structure for increasing the contact area with the liquid, the top of the circumferential surface of the cylindrical shell is provided with a spherical body structure, and an axial component rotation cavity is provided in the center of the cylindrical shell and the spherical body structure, and the cylindrical shell is provided with an inner rotating column which can perform circular motion around the axis of the cylindrical shell inside the component rotation cavity, the bottom end of the inner rotating column is installed in the corresponding structure of the cylindrical shell through a bottom rotating shaft and a bearing, the top end of the inner rotating column is installed in the top docking structure of the cylindrical shell through a top rotating shaft, a bearing and a sealing ring, and the top end of the top rotating shaft is fixedly installed inside the shaft fixing groove.

[0013] Preferably, the axis center lines of the bottom rotating shaft and the top rotating shaft are on the same vertical line as the axis center line of the columnar housing, and the axis center line of the inner rotating column is arranged to deviate from the vertical line.

[0014] Preferably, the energy-absorbing closed docking structure includes an annular protective body, the top of the annular protective body is provided with an annular fixing plate fixedly mounted on the bottom of the top of the concentration cavity, the center of the annular protective body is provided with an annular cavity for placing the connecting component, the bottom end of the annular protective body is provided with a spherical shell of an integrated structure, the center of the spherical shell is provided with a spherical cavity, the spherical shell is embedded with a hemispherical buffer pad in the middle area of ​​the spherical shell located in the spherical cavity, the spherical body structure is placed inside the spherical cavity, and the hemispherical buffer pad is clamped between the spherical body structure and the spherical shell, and the center of the hemispherical buffer pad is provided with a spherical clamping cavity for placing the spherical body structure.

[0015] Preferably, the spherical radius of the spherical body structure is smaller than the spherical structure radius of the spherical cavity, and the thickness of the hemispherical buffer pad is greater than the gap between the spherical body structure and the spherical cavity.

[0016] Compared with the prior art, the present invention provides a pyrethrum extract concentrator, which has the following beneficial effects: The pyrethrum extract concentrator utilizes a high-frequency vibrating rod to generate a vibration effect at the center of the concentrated liquid. The vibration effect can reduce the resistance of bubbles when flowing in the liquid, thereby speeding up the time required for bubble diffusion, thereby improving the efficiency of the pyrethrum extract when concentrating. In addition, the device achieves effective vibration of the rod while ensuring the airtightness of the concentration cavity, thereby ensuring the smooth progress of the concentration work and preventing the occurrence of liquid vapor diffusion, thereby maximizing the utilization of the pyrethrum extract. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the full cross-section structure of the present invention; Figure 2 It is a schematic diagram of the full cross-section structure of the crawler-type soft starting structure in the longitudinal direction of the present invention; Figure 3 It is a schematic diagram of the full cross-section structure of the crawler-type soft starting structure in the present invention in the horizontal direction; Figure 4 It is a three-dimensional diagram of the eccentric vibration structure of the present invention; Figure 5 It is a three-dimensional cross-sectional view of the eccentric vibration structure in the present invention in the longitudinal direction; Figure 6 It is a schematic diagram of the full cross-section structure of the eccentric vibration structure in the present invention in the horizontal direction; Figure 7 A three-dimensional diagram of the energy-absorbing closed docking structure of the present invention; Figure 8 It is a three-dimensional cross-sectional view of the energy-absorbing closed docking structure of the present invention.

[0018] Among them: 1. Longitudinal concentration tank; 2. Support legs; 3. Concentration cavity; 4. Annular heating cavity; 5. Component placement cavity; 6. Liquid inlet channel; 7. Funnel-shaped structure; 8. Finished product discharge channel; 9. Valve body; 10. Extraction steam flow channel; 11. High-temperature steam inlet channel; 12. Steam discharge channel; 13. Drive motor; 14. Rotor; 15. Crawler soft start structure; 151. Upper rotating plate; 152. Lower rotating plate; 153. Rotor fixing groove; 154. Shaft fixing Groove; 155, crawler track; 16, eccentric vibration structure; 161, columnar shell; 162, spherical body structure; 163, component rotation cavity; 164, inner rotating column; 165, bottom rotation axis; 166, top rotation axis; 167, hemispherical structure; 17, energy-absorbing closed docking structure; 171, annular protective body; 172, annular fixing plate; 173, annular cavity; 174, spherical shell; 175, spherical cavity; 176, spherical clamping cavity; 177, hemispherical buffer pad. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1A pyrethrum extract concentrator comprises a longitudinal concentrating tank 1 with supporting legs 2 installed at the bottom of the circumference, a concentrating cavity 3 arranged inside the longitudinal concentrating tank 1, an annular heating cavity 4 arranged outside the circumference of the concentrating cavity 3 and not connected to each other, a component placement cavity 5 arranged at the top of the concentrating cavity 3, a liquid inlet channel 6 arranged at the side of the longitudinal concentrating tank 1 and used for pouring pyrethrum extract into the concentrating cavity 3, a finished product discharge channel 8 arranged at the bottom of the longitudinal concentrating tank 1 and used for finished product discharge, a valve body 9 installed at the finished product discharge channel 8 and used for controlling the flow of a medium, an extraction steam flow channel 10 arranged at the side of the longitudinal concentrating tank 1 and used for discharging high-temperature steam in the concentrating cavity 3 to the outside, a high-temperature steam inlet channel 11 and a steam discharge channel 12 arranged at the end of the longitudinal concentrating tank 1 and connected to the annular heating cavity 4, and a driving motor 13 invertedly installed at the top of the longitudinal concentrating tank 1. In order to maximize the use of the thermal energy of the high-temperature steam, it is necessary to make the high-temperature steam inlet channel 11 and the steam discharge channel 12 with the two most in the annular heating cavity 4 as the maximum flow direction. The far point is symmetrically arranged. In order to facilitate the discharge of the concentrated liquid, it is necessary to provide a funnel-shaped structure 7 at the bottom end of the concentration cavity 3, and the bottom end of the funnel-shaped structure 7 is connected to the finished product discharge channel 8. During the operation, the pyrethrum extract and the required raw materials need to be injected into the interior of the concentration cavity 3 through the liquid inlet channel 6, and then the liquid inlet channel 6 is closed using a plunger. Then the high-temperature steam inlet channel 11 and the steam discharge channel 12 need to be connected to the pipe hole of the steam engine that discharges high-temperature steam from the outside, and the steam engine has the function of controlling the temperature of the discharged steam. Finally, the extraction steam flow channel 10 is connected to the steam inlet channel of the condensing equipment. By discharging the high-temperature steam into the interior of the annular heating chamber 4, the pyrethrum extract liquid located in the concentration cavity 3 can be heated. During the heating process, the liquid of the extraction liquid will be discharged upward in the form of steam under the heating effect, and finally enter the condensing equipment through the extraction steam flow channel 10 for condensation. After the work is completed, the valve body 9 is opened to realize the discharge of the concentrated raw materials.

[0021] In order to achieve soft start of the equipment and reduce the damage of vibration to the drive motor 13, please refer to Figure 1 , Figure 2 and Figure 3 It is necessary to set up a crawler-type soft-start structure 15, which is internally provided with a plurality of crawlers 155 in an annular array and rotate with the rotor 14 of the drive motor 13. After the rotor 14 rotates, the plurality of crawlers 155 will be tightened, and the tightening will cause them to straighten, and then rotate with the rotor 14, driving the eccentric column 164 to rotate. The eccentric column 164 will vibrate during the rotation process, and the crawler 155 has the ability of dislocation movement during the rotation process, so it can effectively reduce the degree of damage to the drive motor 13 caused by vibration.

[0022] For the specific structure of the crawler-type soft start structure 15, please refer to Figure 2 and Figure 3 , including an upper rotating plate 151 and a lower rotating plate 152 located inside the component placement cavity 5, a rotor fixing groove 153 for fixing and installing the rotor 14 is arranged at the center of the upper end surface of the upper rotating plate 151, and a shaft fixing groove 154 for fixing and installing the shaft is arranged at the center of the lower end surface of the lower rotating plate 152. The upper rotating plate 151 and the lower rotating plate 152 are embedded with a plurality of annular array-type crawlers 155 at opposite ends. In order to produce the necessary linkage, it is necessary to make the crawlers 155 located in the area between the edge structure and the axial center line of the upper rotating plate 151 and the lower rotating plate 152. In order to have the ability of dislocation movement, it is necessary to make the crawlers 155 in a relaxed state in the initial state.

[0023] In order to achieve the rotational vibration function, thereby accelerating the floating speed of bubbles in the liquid, please refer to Figure 1 , Figure 4 , Figure 5 and Figure 6 , it is necessary to set up an eccentric vibration structure 16, inside which is set an eccentric column 164 located in the axial center of the concentration cavity 3 and rotating with the crawler 155. When the eccentric column 164 makes a circular motion around the axis of the columnar shell 161, the eccentric column 164 exerts a force influence on the columnar shell 161 in all directions, so that the columnar shell 161 produces a vibration effect. The vibration effect can reduce the resistance of bubbles when flowing in the liquid, thereby speeding up the time required for bubble diffusion, thereby improving the efficiency of the pyrethrum extract when concentrating.

[0024] For the specific structure of the eccentric vibration structure 16, please refer to Figure 4 , Figure 5 and Figure 6, comprising a columnar shell 161 located at the axial center of the concentration cavity 3, the bottom end of the columnar shell 161 is provided with a hemispherical structure 167 for increasing the contact area with the liquid, the top of the circumferential surface of the columnar shell 161 is provided with a spherical structure 162, the center of the columnar shell 161 and the spherical structure 162 is provided with an axial component rotation cavity 163, the columnar shell 161 is provided with an inner rotating column 164 that can make a circular motion around the axis of the columnar shell 161 inside the component rotation cavity 163, the bottom end of the inner rotating column 164 is connected to the bottom rotating shaft 165 and the bearing are installed in the corresponding structure of the columnar shell 161, and the top end of the inner rotating column 164 is installed in the top docking structure of the columnar shell 161 through the top rotating shaft 166, the bearing and the sealing ring. In order to generate eccentric force and vibration during rotation, it is necessary to make the axis line of the bottom rotating shaft 165 and the top rotating shaft 166 and the axis line of the columnar shell 161 on the same vertical line, and the axis line of the inner rotating column 164 is set to one side deviating from the vertical line, and the top end of the top rotating shaft 166 is fixedly installed inside the shaft fixing groove 154.

[0025] In order to achieve elastic connection and sealing function of the installation part, please refer to Figure 1 , Figure 7 and Figure 8 , it is necessary to set up an energy-absorbing closed docking structure 17, in which a hemispherical buffer pad 177 is arranged inside to elastically seal the eccentric vibration structure 16. When the spherical structure 162 vibrates, the vibration will be transmitted to the annular protective body 171 and the corresponding fixed installation position through the hemispherical buffer pad 177. The hemispherical buffer pad 177 has an elastic connection, so it can produce adaptive vibration absorption capacity to the vibration intensity, reducing the negative impact of vibration on components. While absorbing energy, the hemispherical buffer pad 177 can prevent steam from leaking upward along the installation position due to its own sealing ability, thereby ensuring the airtightness of the concentration cavity 3 while achieving effective vibration of the rod body, thereby ensuring the smooth progress of the concentration work and preventing the occurrence of liquid vapor diffusion, thereby maximizing the utilization of the pyrethrum extract.

[0026] For the specific structure of the energy absorbing closed docking structure 17, please refer to Figure 7 and Figure 8, comprising an annular protective body 171, the top of which is provided with an annular fixing plate 172 fixedly mounted on the top bottom of the concentration cavity 3, the center of which is provided with an annular cavity 173 for connecting the component placement cavity 5, the bottom of which is provided with an integrated spherical shell 174, the center of which is provided with a spherical cavity 175, the spherical shell 174 having a hemispherical buffer pad 177 embedded in the middle area of ​​the spherical cavity 175, the The spherical body structure 162 is placed inside the spherical cavity 175, and the hemispherical buffer pad 177 is stuck between the spherical body structure 162 and the spherical shell 174. The center of the hemispherical buffer pad 177 is provided with a spherical clamping cavity 176 for placing the spherical body structure 162. In order to have a vibration activity space, it is necessary to make the spherical radius of the spherical body structure 162 smaller than the spherical structure radius of the spherical cavity 175, and the thickness of the hemispherical buffer pad 177 is larger than the gap between the spherical body structure 162 and the spherical cavity 175.

[0027] When in use, the pyrethrum extract and the required raw materials are injected into the interior of the concentration cavity 3 through the liquid inlet channel 6, and then the liquid inlet channel 6 is closed using a plunger. Then the high-temperature steam inlet channel 11 and the steam discharge channel 12 need to be connected to the pipe hole of the steam engine that discharges high-temperature steam from the outside, and the steam engine has the function of controlling the temperature of the discharged steam. Finally, the extraction steam flow channel 10 is connected to the steam inlet channel of the condensing device. By discharging the high-temperature steam into the interior of the annular heating chamber 4, the pyrethrum extract liquid located in the concentration cavity 3 can be heated. During the heating process, the liquid of the extraction liquid will be discharged upward in the form of steam under the heating effect, and finally enter the condensing device through the extraction steam flow channel 10 for condensation. After the work is completed, the valve body 9 is opened to realize the discharge of the concentrated raw materials.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pyrethrum extract concentrator, comprising a longitudinal concentrating tank (1) having a support leg (2) mounted on the bottom of a circumferential surface, a concentrating cavity (3) arranged inside the longitudinal concentrating tank (1), an annular heating cavity (4) arranged outside the circumferential surface of the concentrating cavity (3) and not connected to each other, a component placement cavity (5) arranged at the top of the concentrating cavity (3), a liquid inlet channel (6) arranged on the side of the longitudinal concentrating tank (1) and used for pouring pyrethrum extract into the concentrating cavity (3), and a heating chamber (5) arranged at the bottom of the longitudinal concentrating tank (1). A finished product discharge channel (8) for discharging finished products, a valve body (9) installed on the finished product discharge channel (8) and used to control the flow of a medium, an extraction steam flow channel (10) arranged on the side of the longitudinal concentration tank (1) and used to discharge the high-temperature steam in the concentration cavity (3) to the outside, a high-temperature steam inlet channel (11) and a steam discharge channel (12) arranged at the end of the longitudinal concentration tank (1) and connected to the annular heating chamber (4), and a drive motor (13) invertedly installed on the top of the longitudinal concentration tank (1), characterized in that: Also includes A crawler-type soft-start structure (15), wherein a plurality of crawlers (155) are arranged in an annular array and rotate along with the rotor (14) of the drive motor (13); An eccentric vibration structure (16) is provided inside which an eccentric column (164) is located at the axial center of the concentration cavity (3) and rotates along with the crawler belt (155); and an energy-absorbing closed docking structure (17), wherein a hemispherical buffer pad (177) is arranged inside the structure for elastically closing the eccentric vibration structure (16).

2. The pyrethrum extract concentrator according to claim 1, characterized in that: The high-temperature steam inlet channel (11) and the steam exhaust channel (12) are symmetrically arranged at the locations of the two farthest points in the annular heating chamber (4).

3. The pyrethrum extract concentrator according to claim 1, characterized in that: A funnel-shaped structure (7) is provided at the bottom end of the concentration cavity (3), and the bottom end of the funnel-shaped structure (7) is connected to a finished product discharge channel (8).

4. The pyrethrum extract concentrator according to claim 1, characterized in that: The crawler-type soft-start structure (15) comprises an upper rotating plate (151) and a lower rotating plate (152) located inside a component placement cavity (5); a rotor fixing groove (153) for fixing and installing a rotor (14) is provided at the center of an upper end surface of the upper rotating plate (151); a shaft fixing groove (154) for fixing and installing a shaft is provided at the center of a lower end surface of the lower rotating plate (152); and a plurality of annular array crawlers (155) are embedded at opposite ends of the upper rotating plate (151) and the lower rotating plate (152).

5. The pyrethrum extract concentrator according to claim 4, characterized in that: The crawler (155) is located in a region between the edge structures and the axial centerline of the upper rotating plate (151) and the lower rotating plate (152).

6. The pyrethrum extract concentrator according to claim 4, characterized in that: The crawler belt (155) is in a relaxed state in an initial state.

7. The pyrethrum extract concentrator according to claim 4, characterized in that: The eccentric vibration structure (16) comprises a columnar housing (161) located at the axial center of the concentration cavity (3); a hemispherical structure (167) for increasing the contact area with the liquid is arranged at the bottom end of the columnar housing (161); a spherical structure (162) is arranged at the top of the circumferential surface of the columnar housing (161); an axial component rotation cavity (163) is arranged at the center of the columnar housing (161) and the spherical structure (162); and the columnar housing (161) is located at the component rotation cavity (163). An inner rotating column (164) is installed inside the column-shaped housing (161) and can perform circular motion around the axis of the column-shaped housing (161). The bottom end of the inner rotating column (164) is installed in the corresponding structure of the column-shaped housing (161) through a bottom rotating shaft (165) and a bearing. The top end of the inner rotating column (164) is installed in the top docking structure of the column-shaped housing (161) through a top rotating shaft (166), a bearing and a sealing ring. The top end of the top rotating shaft (166) is fixedly installed inside the shaft body fixing groove (154).

8. The pyrethrum extract concentrator according to claim 7, characterized in that: The axis center lines of the bottom rotating shaft (165) and the top rotating shaft (166) are located on the same vertical line as the axis center line of the columnar housing (161), and the axis center line of the inner rotating column (164) is arranged to deviate from the vertical line.

9. The pyrethrum extract concentrator according to claim 8, characterized in that: The energy-absorbing closed docking structure (17) comprises an annular protective body (171), the top end of the annular protective body (171) being provided with an annular fixing plate (172) fixedly mounted on the bottom of the top end of the concentration cavity (3), the center of the annular protective body (171) being provided with an annular cavity (173) communicating with the component placement cavity (5), the bottom end of the annular protective body (171) being provided with an integrally structured spherical shell (174), the center of the spherical shell (174) being provided with A spherical cavity (175) is provided, the spherical shell (174) is embedded with a hemispherical buffer pad (177) in a central region of the spherical cavity (175), the spherical body structure (162) is placed inside the spherical cavity (175), and the hemispherical buffer pad (177) is clamped between the spherical body structure (162) and the spherical shell (174), and a spherical clamping cavity (176) for accommodating the spherical body structure (162) is provided at the center of the hemispherical buffer pad (177).

10. The pyrethrum extract concentrator according to claim 9, characterized in that: The spherical radius of the spherical body structure (162) is smaller than the spherical structure radius of the spherical cavity (175), and the thickness of the hemispherical buffer pad (177) is greater than the gap between the spherical body structure (162) and the spherical cavity (175).

Images