Damping device of centrifugal machine

Abstract

The utility model provides a damping device of a centrifugal machine. The supporting rods are detachably arranged on the side wall of the machine shell in a penetrating mode, and the multiple supporting rods are arranged in the circumferential direction of the machine shell; the mounting base is used for mounting a stator and a rotor, a connecting hole is formed in the circumferential side wall of the mounting base, and one end of the supporting rod penetrates into the connecting hole; and the first damping piece is arranged between the supporting rod and the hole wall of the connecting hole. According to the damping device of the centrifugal machine, the supporting rods are arranged to be matched with the first damping pieces for use, when the rotor rotates, the installation base vibrates, the first damping pieces can play a role in absorbing vibration around the installation base, the damping capacity is higher, and meanwhile installation is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifuges, in particular to a centrifuge shock absorbing device. Background Art

[0002] A centrifuge is a device widely used in medical laboratories and blood stations. Its main function is to separate different components in a blood sample through centrifugal force, such as separating serum and blood cells. The centrifuge is equipped with a stator and a rotor. The stator converts electrical energy into mechanical energy to drive the rotor to rotate. The test sample that needs to be centrifuged will be placed on the rotor to achieve centrifugal separation. When the centrifuge is separating blood, the blood needs to be placed in a test tube and loaded into the rotor. Because the amount of blood in each test tube is difficult to be exactly the same, the centrifuge will inevitably vibrate when the rotor rotates. Conventional centrifuges have a larger vibration amplitude at higher speeds, which will not only affect the separation effect, but may also damage the centrifuge. Utility Model Content

[0003] In view of this, the utility model aims to provide a centrifuge shock absorbing device to reduce the vibration generated by the centrifuge when in use.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A centrifuge shock absorbing device comprises: a casing; a support rod, which is detachably arranged on the side wall of the casing and is provided with a plurality of support rods along the circumference of the casing; a mounting seat, which is used to mount a stator and a rotor, and has a connecting hole on its circumferential side wall, and one end of the support rod is inserted into the connecting hole; and a first damping member, which is arranged between the support rod and the hole wall of the connecting hole.

[0006] Furthermore, the connecting hole is a rectangular hole, and four of the first damping members are provided on each of the supporting rods, and the four first damping members respectively abut against the side walls of the connecting hole.

[0007] Furthermore, the first damping member is radially slidably inserted into the support rod; a push rod is coaxially threadedly connected to the support rod, and one end of the push rod close to the first damping member is provided with a conical surface and abuts against each of the first damping members.

[0008] Furthermore, a protective shell is provided on one end of the first damping member located inside the support rod.

[0009] Furthermore, a second damping member is provided at the end of each support rod, and the second damping member abuts against the bottom wall of the connecting hole.

[0010] Furthermore, a mounting plate is fixed on the support rod, and the mounting plate is bolted to the outer side wall of the casing.

[0011] Furthermore, a shock absorbing assembly is provided between the bottom end of the mounting base and the inner bottom end of the casing, and the shock absorbing assembly includes a shock absorbing rod and an oil tank; the oil tank is filled with damping oil and has an opening at the top, and a shock absorbing part is provided at the bottom end of the shock absorbing rod, and the shock absorbing part is passed through the oil tank.

[0012] Furthermore, the shock absorbing part is a plurality of vertical sheet-like bodies arranged along the circumference of the shock absorbing rod.

[0013] Furthermore, the sheet-like body is in the shape of a rectangular plate.

[0014] Furthermore, a flexible sealing sleeve is connected between the opening of the oil tank and the shock absorber rod.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] The centrifuge shock absorbing device described in the utility model is provided with a plurality of support rods for use with the first damping member. When the rotor rotates, the mounting seat vibrates, and the first damping member can absorb the vibration around the mounting seat. Compared with the traditional centrifuge, the shock absorbing ability is stronger and it is also easier to install. The connecting hole is set as a rectangular hole, and the four first damping members respectively abut the four side walls of the connecting hole, so that the first damping member can better absorb the vibration of the mounting seat. By setting a push rod, the push rod can be moved axially after the push rod is screwed, and the conical surface of the push rod can push the first damping member so that the first damping member passes through the support rod and abuts against the inner wall of the connecting hole, and the pressing force of the first damping member on the wall of the connecting hole can be adjusted by screwing the push rod. Providing a protective shell on the first damping member can make the first damping member slide more smoothly on the support rod.

[0017] Secondly, the second damping member can enhance the vibration absorption of the mounting seat relative to the rotor radial direction and improve the shock absorption effect. The mounting plate is arranged on the support rod, so that the support rod can be easily installed on the casing. The damping assembly is arranged, and the end of the damping rod will amplify the vibration. When the mounting seat vibrates, the damping part of the damping rod will swing in the damping oil, and the damping oil can effectively hinder the swing of the damping part, thereby absorbing part of the vibration of the mounting seat.

[0018] In addition, the damping part is set in a sheet shape, which can increase the action area of ​​the damping part and the damping oil when the damping part swings, and improve the shock absorption effect of the damping oil on the damping part. The damping part is set in a rectangular plate shape, which is more convenient to manufacture and has a better action area with the damping oil. The sealing sleeve can seal the gap between the oil tank opening and the damping rod, so that the damping oil is not easy to flow out, and the flexible sealing sleeve is not easy to affect the vibration release of the damping rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0021] Figure 2 It is a schematic diagram of the internal structure of an embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the mounting base of the utility model embodiment;

[0023] Figure 4 This is a schematic diagram of the connection between the support rod, the first damping member, the top rod and the second damping member in an embodiment of the utility model;

[0024] Figure 5 It is a partial cross-sectional view of an embodiment of the utility model.

[0025] Description of reference numerals:

[0026] 1. Casing;

[0027] 2. Support rod; 201. Mounting plate;

[0028] 3. Mounting seat; 301. Connecting hole; 302. Mounting tube;

[0029] 4. first damping member; 401. protective shell;

[0030] 5. Ejector rod;

[0031] 6. A second damping member;

[0032] 7. shock absorbing assembly; 701. shock absorbing rod; 7011. shock absorbing part; 702. oil tank; 703. sealing sleeve;

[0033] 8. Rotor. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0035] In the description of the present invention, it should be noted that if there are terms such as "upper", "lower", "inner", "outer" and the like indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first" and "second", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0037] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0038] The present embodiment relates to a centrifuge shock absorbing device, which is used to optimize and improve the shock absorbing structure of the centrifuge to reduce the vibration generated by the centrifuge when in use.

[0039] In terms of overall structure, the centrifuge shock absorbing device comprises a casing 1, a support rod 2, a mounting seat 3 and a first damping member 4. The support rod 2 is detachably arranged on the side wall of the casing 1, and a plurality of the support rods 2 are arranged along the circumference of the casing 1. The mounting seat 3 is used to install the stator and the rotor 8, and a connecting hole 301 is arranged on the circumferential side wall thereof, and one end of the support rod 2 is inserted into the connecting hole 301. The first damping member 4 is arranged between the support rod 2 and the hole wall of the connecting hole 301.

[0040] The centrifuge shock absorbing device of this embodiment is provided with a plurality of support rods 2 for use with the first damping member 4. When the rotor 8 rotates, the mounting seat 3 vibrates, and the first damping member 4 can absorb the vibration around the mounting seat 3. Compared with the traditional centrifuge, the shock absorbing ability is stronger and it is also easier to install.

[0041] Based on the above overall introduction, the centrifuge shock absorbing device in this embodiment is as follows Figures 1 to 5As shown, the casing 1 is cylindrical and has an openable and closable cover on the top. The mounting seat 3 is a rotating body, and eight connecting holes 301 are evenly distributed on the circumferential side wall. A mounting tube 302 is provided at the bottom end of the mounting seat 3, and the stator is mounted on the mounting seat 3 and covered by the mounting tube 302. The rotating shaft of the stator passes through the mounting seat 3 upward to connect to the rotor 8, and the rotor 8 is provided with a hole for placing a test tube. The shell is provided with a partition plate between the rotor 8 and the mounting seat 3 to separate the rotor 8 from the lower structure, and the shell can be separated from the partition plate up and down to facilitate the installation of the internal structure. The support rod 2 is inserted into the connecting hole 301 of the mounting seat 3 from the outside to the inside of the shell, and the radial and axial vibrations of the mounting seat 3 are absorbed by the first damping member 4.

[0042] As a preferred embodiment, refer to Figure 3 and Figure 5 , the connecting hole 301 is a rectangular hole, and four first damping members 4 are provided on each support rod 2, and the four first damping members 4 respectively abut the side walls of the connecting hole 301. The four side walls of the rectangular hole are a horizontal top wall, a horizontal bottom wall and two vertical side walls, respectively. The four damping members can absorb vibrations in four different directions, and the shock absorption effect is better. In this embodiment, the cross-section of the first damping member 4 is rectangular and is made of rubber blocks. It should also be noted that because the support rod 2 supports the weight of the mounting seat 3, the first damping member 4 at the top needs to be subjected to greater pressure. Therefore, it is further preferred that the cross-section of the first damping member 4 at the top of the support rod 2 is larger than the first damping members 4 in the other three directions, so as to obtain a better support effect on the mounting seat 3.

[0043] In order to further improve the absorption effect of the radial vibration of the mounting seat 3, a second damping member 6 is also provided at the end of each support rod 2, and the second damping member 6 abuts against the bottom wall of the connecting hole 301. Multiple second damping members 6 can clamp the mounting seat 3 together. When the mounting seat 3 generates radial vibration, the second damping member 6 can respond quickly and absorb the vibration, so that the overall shock absorption performance of the shock absorbing device is improved. In this embodiment, the second damping member 6 is a cylinder made of a rubber block and bonded to the end of the support rod 2.

[0044] In one possible implementation, refer to Figure 4 and Figure 5, the first damping member 4 is radially slidably penetrated on the support rod 2. A push rod 5 is coaxially threadedly connected to the support rod 2, and a conical surface is provided at one end of the push rod 5 close to the first damping member 4 and abuts against each first damping member 4. A hexagonal slot is provided at one end of the push rod 5 located outside the support rod 2 to facilitate its screwing. By screwing the push rod 5, the push rod 5 can be moved axially. When the push rod 5 moves toward the inside of the housing 1, its conical surface will push the first damping member 4, so that the first damping member 4 extends out and abuts against the hole wall of the connecting hole 301. At the same time, by screwing the push rod 5, the extrusion force of the first damping member 4 on the hole wall of the connecting hole 301 can also be adjusted, thereby adjusting the vibration absorption strength of the first damping member 4.

[0045] In order to reduce the friction between the first damping member 4 and the support rod 2, a protective shell 401 is sleeved on one end of the first damping member 4 located inside the support rod 2. The protective shell 401 covers the end of the first damping member 4 facing the push rod 5, and replaces the body of the first damping member 4 to be slidably connected with the support rod 2, which can reduce the wear of the first damping member 4 and improve the service life of the first damping member 4. Specifically, the bottom end of the protective shell 401 is an inclined surface, and the inclination is adapted to the conical surface of the push rod 5, so that the push rod 5 can lift the protective shell 401.

[0046] As a preferred embodiment, refer to Figure 1 and Figure 2 The support rod 2 is fixed with a mounting plate 201, which is bolted to the outer wall of the housing 1. The mounting plate 201 is a rectangular plate, welded to the outside of the support rod 2, and the side in contact with the housing is a housing surface, which can fit the circumferential outer wall of the housing. The mounting plate 201 is provided with two through holes, and the housing is provided with a threaded blind hole. The mounting plate 201 can be fixed to the side wall of the housing 1 by using bolts to pass through the mounting plate 201 and screw into the threaded blind hole. The installation is convenient, firm and stable.

[0047] In a feasible implementation, a shock absorbing assembly 7 is further provided between the bottom end of the mounting seat 3 and the inner bottom end of the housing 1, and the shock absorbing assembly 7 includes a shock absorbing rod 701 and an oil tank 702. The oil tank 702 is filled with damping oil and has an opening at the top. The bottom end of the shock absorbing rod 701 is provided with a shock absorbing part 7011, and the shock absorbing part 7011 is penetrated in the oil tank 702. In a specific implementation, the end of the shock absorbing rod 701 will amplify the vibration of the mounting seat 3. When the mounting seat 3 vibrates, the shock absorbing part 7011 of the shock absorbing rod 701 will swing in the damping oil, and the damping oil can effectively hinder the swing of the shock absorbing part 7011, thereby absorbing part of the vibration of the mounting seat 3. In this embodiment, the oil tank 702 is a cylindrical oil tank 702, and an opening is provided at the center of the top.

[0048] As a preferred example, the shock absorbing part 7011 is a plurality of vertical laminar bodies arranged along the circumference of the shock absorbing rod 701. The shock absorbing part 7011 is arranged in a laminar shape, so that the action area of ​​the shock absorbing part 7011 and the damping oil can be increased when the shock absorbing part 7011 swings, and the shock absorbing effect of the damping oil on the shock absorbing part 7011 can be improved. Further preferably, the laminar body is in the shape of a rectangular plate. The manufacturing process of the rectangular plate-shaped shock absorbing part 7011 is simple, and it can also be in good contact with the damping oil. In this embodiment, there are eight laminar bodies, which are evenly distributed along the circumference of the shock absorbing rod 701, and each laminar body corresponds to a position of a connecting hole 301.

[0049] As a preferred embodiment, a flexible sealing sleeve 703 is connected between the opening of the oil tank 702 and the shock absorbing rod 701. The sealing sleeve 703 can seal the gap between the opening of the oil tank 702 and the shock absorbing rod 701, so that the damping oil is not easy to flow out, and the flexible sealing sleeve 703 is not easy to affect the vibration release of the shock absorbing rod 701.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A centrifuge shock absorbing device, characterized in that: include: Housing (1); A support rod (2), the support rod (2) being detachably arranged on the side wall of the casing (1), and being provided in plurality along the circumference of the casing (1); A mounting seat (3), the mounting seat (3) being used to mount the stator and the rotor, the circumferential side wall of the mounting seat (3) being provided with a connecting hole (301), one end of the support rod (2) being inserted into the connecting hole (301); A first damping member (4), wherein the first damping member (4) is arranged between the support rod (2) and a hole wall of the connecting hole (301).

2. The centrifuge shock absorbing device according to claim 1, characterized in that: The connecting hole (301) is a rectangular hole, and four of the first damping members (4) are provided on each of the supporting rods (2), and the four first damping members (4) respectively abut against the side walls of the connecting hole (301).

3. The centrifuge vibration reduction device according to claim 2, characterized in that: The first damping member (4) is radially slidably inserted into the support rod (2); a push rod (5) is coaxially threadedly connected to the support rod (2); one end of the push rod (5) close to the first damping member (4) is provided with a conical surface and abuts against each of the first damping members (4).

4. The centrifuge vibration reduction device according to claim 3, characterized in that: One end of the first damping member (4) located inside the support rod (2) is sleeved with a protective shell (401).

5. The centrifuge vibration reduction device according to claim 2, characterized in that: A second damping member (6) is also provided at the end of each support rod (2), and the second damping member (6) abuts against the bottom wall of the connecting hole (301).

6. The centrifuge vibration reduction device according to claim 1, characterized in that: A mounting plate (201) is fixedly provided on the support rod (2), and the mounting plate (201) is bolted to the outer side wall of the casing (1).

7. The centrifuge vibration reduction device according to claim 1, characterized in that: A shock absorbing assembly (7) is also provided between the bottom end of the mounting seat (3) and the inner bottom end of the housing (1), and the shock absorbing assembly (7) comprises a shock absorbing rod (701) and an oil tank (702); The oil tank (702) is filled with damping oil and is provided with an opening at the top; the bottom end of the shock absorbing rod (701) is provided with a shock absorbing part (7011), and the shock absorbing part (7011) is inserted into the oil tank (702).

8. The centrifuge vibration reduction device according to claim 7, characterized in that: The shock absorbing part (7011) is a plurality of vertical sheet-like bodies arranged along the circumference of the shock absorbing rod (701).

9. The centrifuge vibration reduction device according to claim 8, characterized in that: The sheet-shaped body is in the shape of a rectangular plate.

10. The centrifuge vibration reduction device according to claim 7, characterized in that: A flexible sealing sleeve (703) is connected between the opening of the oil tank (702) and the shock absorbing rod (701).

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