Medical vacuum negative pressure machine with overpressure safety protection device

Abstract

The utility model discloses a medical vacuum negative pressure machine with an overpressure safety protection device, and relates to the technical field of negative pressure machines, the medical vacuum negative pressure machine comprises a base, a vacuum pump and a negative pressure barrel, the front of the left side of the upper surface of the base is fixedly connected with a block-up block, and the upper end of the block-up block is fixedly connected with the lower portion of the outer surface of the vacuum pump; and a junction box is fixedly connected above the outer surface of the vacuum pump. Through the connection of the guide rod, the sleeve and the fixed rod, the power-on phenomenon is carried out to realize the work, when the negative pressure in the negative pressure barrel is generated, the sleeve moves downwards and shrinks under the action of the weight of the movable disc, so that the guide rod is separated to realize the disconnection of a circuit, and the position of the movable disc is limited through the arrangement of the limiting rod; the phenomenon that the sleeve and the fixing rod are separated when the pressure intensity is too large is prevented, the problem that danger is likely to happen when the current structure is single and the pressure is too low is solved, and the effect that a circuit is automatically disconnected under the negative pressure to achieve safety protection is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of negative pressure machines, in particular to a medical vacuum negative pressure machine with an overpressure safety protection device. Background Art

[0002] Medical vacuum negative pressure machine is a device that uses negative pressure technology to collect, store, transport and dispose of the carcasses of experimental animals after use. Vacuum negative pressure machine, also known as negative pressure vacuum pump, refers to a miniature vacuum pump, because it has an inlet and an outlet suction nozzle and an exhaust nozzle, and can continuously form a vacuum or negative pressure (relative vacuum) at the inlet and a slight positive pressure at the exhaust nozzle.

[0003] According to patent publication number CN215409066U, a medical vacuum negative pressure machine with an overpressure protection device is disclosed, including a negative pressure chamber and an overpressure protection mechanism arranged on the top of the negative pressure chamber, and also including a connecting mechanism arranged on one side of the negative pressure chamber. The overpressure protection mechanism includes a glass tube, and the glass tube is connected with the inside of the negative pressure chamber, and also includes a piston sleeve slidably connected in the glass tube. When the vacuum pump is working, the inside of the negative pressure chamber is placed in a negative pressure environment through a connecting pipe. Since the glass tube is connected with the inside of the negative pressure chamber, when the inside of the negative pressure chamber is under negative pressure, the piston sleeve wrapped with the piston iron block moves downward inside the glass tube. When the pressure inside the negative pressure chamber is lower than a threshold value, the piston sleeve moves to the bottom of the limit block, the second spiral wire is straightened, and then the magnetic block falls off the piston iron block. At this time, a short circuit is formed between the two connecting wires, and the vacuum pump circuit is cut off, preventing the pressure inside the negative pressure chamber from being too low and causing danger during use. The following problems exist in the existing technology: the current medical vacuum negative pressure machine has a relatively simple structure, which may lead to dangerous problems when the pressure is too low; at the same time, the connection method of the suction nozzle in the traditional medical vacuum negative pressure machine is too simple, resulting in the connection not being tight enough and easy to leak, affecting the internal pressure. Utility Model Content

[0004] The utility model provides a medical vacuum negative pressure machine with an overpressure safety protection device to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a medical vacuum negative pressure machine with an overpressure safety protection device, comprising a base, a vacuum pump, and a negative pressure barrel. A pad is fixedly connected to the front left side of the upper surface of the base, and the upper end of the pad is fixedly connected to the lower outer surface of the vacuum pump. A junction box is fixedly connected above the outer surface of the vacuum pump. The negative pressure barrel and the vacuum pump are fixedly connected through a pipeline, and an overpressure protection component is fixedly connected through the middle above the outer surface of the negative pressure barrel. Two conductive rods are arranged on the left and right sides of the upper end of the overpressure protection component, and the right end of the negative pressure barrel is fixedly connected to a connecting component, and an exhaust pipe is fixedly connected to the inside of the connecting component, and four supporting legs are fixedly connected to a rectangular array in the front right side of the upper surface of the base, and a control box is fixed to the upper ends of the four supporting legs.

[0006] The overvoltage protection assembly includes a hollow column, an end cap is fixedly connected through the lower outer surface of the two conductive rods, the interior of the end cap is threadedly connected to the upper outer surface of the hollow column, the lower ends of the two conductive rods are mirror-imaged and fixedly connected with bent rods, the lower ends of the bent rods are fixedly connected with square block 1, the lower surface of the square block 1 is fixedly connected with a guide rod, a sleeve is slidably connected through the lower outer surface of the guide rod, the interior of the sleeve is slidably connected with a fixed rod, and the lower end of the fixed rod is fixedly connected with square block 2.

[0007] A further improvement of the technical solution of the utility model is that: the lower surface of the square block 2 is fixedly connected with a circular bottom block, the outer surface of the circular bottom block is fixedly connected to the lower part of the inner wall of the hollow column, the circular bottom block is provided with a plurality of circular openings which are connected to the interior of the negative pressure barrel, and the upper part of the inner wall of the hollow column is provided with a wire hole which communicates with the inside and the outside.

[0008] A further improvement of the technical solution of the utility model is that a moving disk is fixedly connected above the outer surface of the sleeve, a rubber ring is fixedly connected to the outer surface of the moving disk, and the outer surface of the rubber ring overlaps the inner wall of the hollow column.

[0009] A further improvement of the technical solution of the utility model is that a circular rubber block is overlapped in the middle of the upper surface of the movable plate, a limiting rod is fixedly connected to the upper surface of the circular rubber block, and the upper end of the limiting rod is fixedly connected to the middle of the lower surface of the end cover.

[0010] A further improvement of the technical solution of the utility model is that a connecting piece is overlapped on the upper part of the inner wall of the sleeve, the upper part of the inner wall of the connecting piece is fixedly connected to the lower part of the outer surface of the guide rod, and the material of the bent rod, square block one, guide rod, sleeve, fixed rod and square block two is copper.

[0011] A further improvement of the technical solution of the utility model is that the connecting assembly includes a column and a hollow block of the column, a through opening communicating with the left and right is opened in the middle of the left end of the column, a threaded sleeve is fixedly connected to the left side of the outer surface of the column, and an elastic sealing ring is fixedly connected to the right side of the outer surface of the column.

[0012] A further improvement of the technical solution of the utility model is that: the inner wall of the cylindrical hollow block is fixedly connected with an elastic sealing ring 2, the outer surface of the cylindrical hollow block is provided with a sleeve block, and the outer surface of the elastic sealing ring 1 is plugged into the inner wall of the elastic sealing ring 2.

[0013] A further improvement of the technical solution of the utility model is that a second thread is provided on the right side of the inner wall of the sleeve block, a first thread is provided on the left side of the inner wall of the sleeve block, the surface of the second thread is threadedly connected to the outer surface of the hollow block of the cylinder, and the surface of the first thread is threadedly connected to the outer surface of the threaded sleeve.

[0014] Due to the adoption of the above technical scheme, the technical progress achieved by the utility model compared with the prior art is as follows: the utility model provides a medical vacuum negative pressure machine with an overpressure safety protection device, which adopts the mutual cooperation of a hollow column, an end cover, a bent rod, a square block one, a guide rod, a sleeve, a connecting piece, a fixed rod, a square block two, a circular bottom block, a movable disk, and a limit rod. Through the connection of the guide rod, the sleeve, and the fixed rod, power is supplied to realize the work. When the negative pressure barrel is under negative pressure, the sleeve moves downward and contracts under the action of the weight of the movable disk, so that the guide rod is separated to disconnect the circuit. The position of the movable disk is limited by the setting of the limit rod to prevent the sleeve and the fixed rod from separating when the pressure is too high. The problem that the current structure is relatively single and is prone to danger when the pressure is too low is solved, and the effect of automatically disconnecting the circuit under negative pressure to realize safety protection is achieved.

[0015] The utility model provides a medical vacuum negative pressure machine with an overpressure safety protection device, which adopts the mutual cooperation of a column, a through port, a threaded sleeve, an elastic sealing ring 1, a column hollow block, an elastic sealing ring 2, a sleeve block, a first thread and a second thread, and the column and the elastic sealing ring 1 are inserted into the interior of the main hollow column block so that the elastic sealing ring 1 and the elastic sealing ring 2 are squeezed against each other to deform and fit tightly, thereby achieving a sealing effect, and the setting of the sleeve block facilitates the installation and fixing of the soil hollow block and the column, thereby solving the problem of insufficiently tight connection and easy leakage in the current medical vacuum negative pressure machine, and achieving the effect of improving the sealing performance and facilitating installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2It is a schematic diagram of the front cross-sectional structure of a hollow column in the overpressure protection assembly of the utility model;

[0018] Figure 3 This is a schematic diagram of the front cross-sectional structure of the sleeve of the utility model;

[0019] Figure 4 It is a schematic diagram of the exploded structure of the connection assembly of the utility model;

[0020] Figure 5 This is a schematic diagram of the block structure of the utility model.

[0021] In the figure: 1. base; 2. vacuum pump; 3. pipeline; 4. negative pressure barrel; 5. overpressure protection component; 51. hollow column; 52. end cover; 53. bent rod; 54. square block one; 55. guide rod; 56. sleeve; 561. connector; 57. fixed rod; 58. square block two; 59. round bottom block; 511. movable plate; 512. limit rod; 6. conductive rod; 7. connecting component; 71. column; 72. through port; 73. threaded sleeve; 74. elastic sealing ring one; 75. hollow block of column; 76. elastic sealing ring two; 77. sleeve block; 771. first thread; 772. second thread; 8. control box; 9. exhaust pipe. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figure 1 As shown, the utility model provides a medical vacuum negative pressure machine with an overpressure safety protection device, including a base 1, a vacuum pump 2, and a negative pressure barrel 4. A padding block is fixedly connected to the front left side of the upper surface of the base 1, and the upper end of the padding block is fixedly connected to the lower outer surface of the vacuum pump 2. A junction box is fixedly connected above the outer surface of the vacuum pump 2. The negative pressure barrel 4 and the vacuum pump 2 are fixedly connected through a pipeline 3. An overpressure protection component 5 is fixedly connected through the middle part above the outer surface of the negative pressure barrel 4. Two conductive rods 6 are arranged on the left and right sides of the upper end of the overpressure protection component 5. A connecting component 7 is fixedly connected to the right end of the negative pressure barrel 4. An exhaust pipe 9 is fixedly connected to the inside of the connecting component 7. Four supporting legs are fixedly connected to the front right side of the upper surface of the base 1 in a rectangular array, and a control box 8 is fixed to the upper ends of the four supporting legs.

[0024] By setting the control box 8 and the conductive rod 6, the electrical connection is made through the use of wires. By opening the end cover 52 in the overvoltage protection component 5, the wires are placed inside and electrically connected and fixed to the square block 2 58, and the other end of the wires are inserted into the wire hole that communicates with the inside and outside above the inner wall of the hollow column 51 and are electrically connected and fixed to the junction box in the vacuum pump 2, thereby realizing the control of the vacuum pump 2.

[0025] like Figure 2 - Figure 3 As shown, the overvoltage protection assembly 5 includes a hollow column 51, and an end cover 52 is fixedly connected to the lower outer surface of the two conductive rods 6, and the interior of the end cover 52 is threadedly connected to the upper outer surface of the hollow column 51. The lower ends of the two conductive rods 6 are mirror-imaged and fixedly connected with curved rods 53, and the lower ends of the curved rods 53 are fixedly connected with a square block 1 54, and the lower surface of the square block 1 54 is fixedly connected with a guide rod 55, and the lower outer surface of the guide rod 55 is slidably connected with a sleeve 56, and the interior of the sleeve 56 is slidably connected with a fixed rod 57, and the lower end of the fixed rod 57 is fixedly connected with a square block 2 58, and the lower surface of the square block 2 58 is fixedly connected with a circular bottom block 59, and the outer surface of the circular bottom block 59 is fixedly connected to the lower inner wall of the hollow column 51, and the circular bottom block 59 is provided with a plurality of A circular opening is connected to the interior of the negative pressure barrel 4, and a wire hole communicating with the inside and outside is opened on the inner wall of the hollow column 51. A movable disk 511 is fixedly connected to the outer surface of the sleeve 56, and a rubber ring is fixedly connected to the outer surface of the movable disk 511. The outer surface of the rubber ring overlaps the inner wall of the hollow column 51, and a circular rubber block is overlapped in the middle of the upper surface of the movable disk 511. A limiting rod 512 is fixedly connected to the upper surface of the circular rubber block, and the upper end of the limiting rod 512 is fixedly connected to the middle of the lower surface of the end cover 52. A connecting piece 561 is overlapped on the inner wall of the sleeve 56, and the upper inner wall of the connecting piece 561 is fixedly connected to the lower outer surface of the guide rod 55. The material of the curved rod 53, the square block 1 54, the guide rod 55, the sleeve 56, the fixed rod 57, and the square block 2 58 is copper;

[0026] When the inside of the negative pressure barrel 4 is under negative pressure, the sleeve 56 is driven downward by the weight of the moving plate 511. Since the guide rod 55 is fixed at the position, the sleeve 56 moves downward so that the connecting piece 561 slides on the inner wall of the sleeve 56, so that the sleeve 56 is separated from the connecting piece 561 to disconnect the circuit, thereby having a safety protection effect. When the pressure inside the negative pressure barrel 4 is restored, part of the pressurized gas passes through the circular opening in the circular bottom block 59, thereby entering the inside of the hollow column 51 and upward. The movable disk 511 is pushed to drive the sleeve 56 to slide on the surface of the fixed rod 57. When the movable disk 511 contacts the circular rubber block in the limiting rod 512, the connecting piece 561 is inserted into the inside of the sleeve 56, so as to make a connection and facilitate power supply. The setting of the limiting rod 512 limits the position of the movable disk 511 to prevent the sleeve 56 and the fixed rod 57 from separating due to excessive pressure. The setting of the circular rubber block on the outer surface of the movable disk 511 has a sealing effect.

[0027] like Figure 4 - Figure 5As shown, the connecting assembly 7 includes a column 71 and a column hollow block 75, a through hole 72 communicating with the left and right sides is opened in the middle of the left end of the column 71, a threaded sleeve 73 is fixedly connected to the left side of the outer surface of the column 71, an elastic sealing ring 1 74 is fixedly connected to the right side of the outer surface of the column 71, an elastic sealing ring 2 76 is fixedly connected to the inner wall of the column hollow block 75, a sleeve block 77 is provided on the outer surface of the column hollow block 75, the outer surface of the elastic sealing ring 1 74 is plugged with the inner wall of the elastic sealing ring 2 76, a second thread 772 is provided on the right side of the inner wall of the sleeve block 77, a first thread 771 is provided on the left side of the inner wall of the sleeve block 77, the surface of the second thread 772 is threadedly connected to the outer surface of the column hollow block 75, and the surface of the first thread 771 is threadedly connected to the outer surface of the threaded sleeve 73;

[0028] When installation is required, the hollow block 75 of the column is inserted into the outer surface of the column 71 and the elastic sealing ring 1 74 for plugging, and the elastic sealing ring 2 76 and the elastic sealing ring 1 74 are squeezed against each other during the plugging, thereby deforming the elastic sealing ring 2 76 and the elastic sealing ring 1 74 to fit tightly together, thereby achieving a sealing effect, and the air vent at the right end of the negative pressure barrel 4 is the same shape as the vent 72 to facilitate the air extraction effect. After sealing, the sleeve block 77 is rotated clockwise so that the second thread 772 in the sleeve block 77 is threadedly connected to the outer surface of the hollow block 75 of the column. When the sleeve block 77 is rotated to an appropriate degree and contacts the threaded sleeve 73, the first thread 771 is threadedly connected to the threaded sleeve 73, thereby facilitating the assembly and fixation of the hollow block 75 of the column and the column 71.

[0029] The following is a detailed description of the working principle of the medical vacuum negative pressure machine with overpressure safety protection device.

[0030] When the interior of the negative pressure barrel 4 is under negative pressure, the sleeve 56 is driven downward by the middle weight of the movable plate 511. Since the guide rod 55 is fixed and limited in position, the sleeve 56 moves downward so that the connecting piece 561 slides on the inner wall of the sleeve 56, thereby separating the sleeve 56 from the connecting piece 561 to disconnect the circuit and provide a safety protection effect. When installation is required, the hollow block 75 of the column is inserted into the interior of the column 71 so that the elastic sealing ring 1 74 and the elastic sealing ring 2 76 fit tightly together to achieve a sealing effect. The sleeve block 77, the second thread 772 and the first thread 771 are rotated clockwise to assemble and fix the hollow block 75 of the column and the column 71.

[0031] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A medical vacuum negative pressure machine with an overpressure safety protection device, comprising a base (1), a vacuum pump (2), and a negative pressure barrel (4), characterized in that: A padding block is fixedly connected to the front left side of the upper surface of the base (1), the upper end of the padding block is fixedly connected to the lower part of the outer surface of the vacuum pump (2), a junction box is fixedly connected to the upper part of the outer surface of the vacuum pump (2), the negative pressure barrel (4) and the vacuum pump (2) are fixedly connected through a pipeline (3), an overpressure protection component (5) is fixedly connected through the middle part above the outer surface of the negative pressure barrel (4), two conductive rods (6) are arranged on the left and right sides of the upper end of the overpressure protection component (5), the right end of the negative pressure barrel (4) is fixedly connected to a connection component (7), the interior of the connection component (7) is fixedly connected to an exhaust pipe (9), four supporting legs are fixedly connected to the front right side of the upper surface of the base (1) in a rectangular array, and a control box (8) is fixedly connected to the upper ends of the four supporting legs; The overvoltage protection assembly (5) comprises a hollow column (51), an end cap (52) is fixedly connected to the lower part of the outer surface of the two conductive rods (6), the interior of the end cap (52) is threadedly connected to the upper part of the outer surface of the hollow column (51), the lower ends of the two conductive rods (6) are respectively fixedly connected to curved rods (53) in a mirror-image arrangement, the lower ends of the curved rods (53) are fixedly connected to a square block 1 (54), the lower surface of the square block 1 (54) is fixedly connected to a guide rod (55), the outer surface of the guide rod (55) is slidably connected to a sleeve (56), the interior of the sleeve (56) is slidably connected to a fixed rod (57), and the lower end of the fixed rod (57) is fixedly connected to a square block 2 (58).

2. A medical vacuum negative pressure machine with an overpressure safety protection device according to claim 1, characterized in that: The lower surface of the square block 2 (58) is fixedly connected to a circular bottom block (59), the outer surface of the circular bottom block (59) is fixedly connected to the lower part of the inner wall of the hollow column (51), the circular bottom block (59) is provided with a plurality of circular openings which are connected to the interior of the negative pressure barrel (4), and the upper part of the inner wall of the hollow column (51) is provided with a wire hole which is connected to the inside and the outside.

3. The medical vacuum negative pressure machine with an overpressure safety protection device according to claim 1, characterized in that: A movable disk (511) is fixedly connected to the upper portion of the outer surface of the sleeve (56), a rubber ring is fixedly connected to the outer surface of the movable disk (511), and the outer surface of the rubber ring overlaps the inner wall of the hollow column (51).

4. A medical vacuum negative pressure machine with an overpressure safety protection device according to claim 3, characterized in that: A circular rubber block is overlapped in the middle of the upper surface of the movable plate (511), the upper surface of the circular rubber block is fixedly connected to a limiting rod (512), and the upper end of the limiting rod (512) is fixedly connected to the middle of the lower surface of the end cover (52).

5. The medical vacuum negative pressure machine with an overpressure safety protection device according to claim 1, characterized in that: A connecting piece (561) is overlapped on the upper part of the inner wall of the sleeve (56), and the upper part of the inner wall of the connecting piece (561) is fixedly connected to the lower part of the outer surface of the guide rod (55). The material of the bent rod (53), the square block 1 (54), the guide rod (55), the sleeve (56), the fixed rod (57), and the square block 2 (58) is copper.

6. The medical vacuum negative pressure machine with an overpressure safety protection device according to claim 1, characterized in that: The connecting assembly (7) comprises a column (71) and a column hollow block (75); a through opening (72) communicating with the left and right sides is provided in the middle of the left end of the column (71); a threaded sleeve (73) is fixedly connected to the left side of the outer surface of the column (71); and an elastic sealing ring (74) is fixedly connected to the right side of the outer surface of the column (71).

7. A medical vacuum negative pressure machine with an overpressure safety protection device according to claim 6, characterized in that: The inner wall of the cylindrical hollow block (75) is fixedly connected to an elastic sealing ring 2 (76), the outer surface of the cylindrical hollow block (75) is provided with a sleeve block (77), and the outer surface of the elastic sealing ring 1 (74) is plugged into the inner wall of the elastic sealing ring 2 (76).

8. The medical vacuum negative pressure machine with overpressure safety protection device according to claim 7, characterized in that: A second thread (772) is provided on the right side of the inner wall of the sleeve block (77), and a first thread (771) is provided on the left side of the inner wall of the sleeve block (77); the surface of the second thread (772) is threadedly connected to the outer surface of the cylindrical hollow block (75), and the surface of the first thread (771) is threadedly connected to the outer surface of the threaded sleeve (73).

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