Oxygen generator with noise reduction hood

Abstract

The invention discloses an oxygen generator with a silencing hood, and belongs to the technical field of oxygen generators. An oxygen generator with a noise reduction hood comprises a device body, sliding wheels are connected to the four corners of the lower end of the device body, a fixing assembly is connected to the lower side surface of the front end of the device body, a sealing block is connected to the upper portion of the fixing assembly, a first-stage filter is connected to one side of the upper portion of the sealing block, and a second-stage filter is connected to the other side of the upper portion of the sealing block. When one end of a fixing plate makes contact with an inner cavity of a device body, a sound insulation cavity and a supporting block of a molecular sieve can accurately coincide with a U-shaped groove, meanwhile, a first reset spring stretches to push a telescopic fixing plate to coincide with a second fixing groove, internal parts of the device are effectively fixed, and the positions of the internal parts are kept unchanged; the fixing mode facilitates replacement of the silencing bottom plate through the third sliding grooves, the replacement difficulty is greatly reduced, the replacement efficiency is improved, then it is guaranteed that the oxygen generator can rapidly recover normal operation, the working efficiency is improved, and the user experience is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of oxygen generators, and more specifically, to an oxygen generator with a built-in soundproof cover. Background Art

[0002] With the increasing demand for health among people, oxygen generators have been widely used in many fields such as home medical care and oxygen supplementation in plateau areas. Since there is no soundproof cover installed in the oxygen generator, during the operation of the oxygen generator, the air compressor and molecular sieve will generate noise. If the oxygen generator is used in a home room, the noise will be very obvious, thus disturbing some users who need to use the oxygen generator for recuperation in a relatively quiet environment.

[0003] In response to this problem, although some current oxygen generators are installed with soundproof covers inside, during the long-term use of the soundproof cover, when the material ages or is physically damaged, the soundproof effect decreases or even fails. In this case, it is necessary to replace the split-type soundproof cover. However, during the replacement of the soundproof cover, the soundproof bottom plate provided at the bottom end of the inner cavity of the device main body is difficult to replace. It is necessary to disassemble and remove the components in the oxygen generator, and then the soundproof bottom plate can be replaced, making the replacement steps of the soundproof bottom plate cumbersome, thus resulting in a low replacement efficiency of the soundproof cover and further reducing the working efficiency of the oxygen generator. Summary of the Invention

[0004] The purpose of the present invention is to provide an oxygen generator with a built-in soundproof cover to solve the problems raised in the above background art.

[0005] An oxygen generator with a built-in soundproof cover includes a device main body. The four corners at the lower end of the device main body are connected with sliding wheels, and a fixing component is connected to the lower side surface at the front end of the device main body. A sealing block is connected above the fixing component. One side above the sealing block is connected with a primary filter. An acoustic component is connected in the inner cavity of the device main body. Connecting components are connected to both sides at the upper end of the acoustic component. A rectangular support plate is connected in the inner cavity of the acoustic component. An air compressor is connected to the upper end surface of the rectangular support plate. One end of the air compressor is connected with a molecular sieve. A sound insulation cavity is connected to the outer surface of the air compressor. A radiator is connected in the inner cavity of the sound insulation cavity. At the same time, a first rectangular support block is connected to the outer surface of the sound insulation cavity. A second rectangular support block is connected to the outer surface at the lower end of the molecular sieve. A battery valve is connected to the lower end of the molecular sieve. One end of the primary filter is connected with a first air pipe. The end of the first air pipe far from the primary filter is connected with a secondary filter. And the end of the secondary filter far from the first air pipe is connected with a second air pipe, and the second air pipe communicates with the inner cavity of the acoustic component; The fixed component includes a fixed plate. On the surface of one end of the fixed plate facing the inner cavity of the device main body, a number of U-shaped grooves are provided. On the side surfaces at both ends of the fixed plate, first rectangular chutes are provided. In the inner cavity of the first rectangular chute, a telescopic fixed plate is connected. On the surface of the telescopic fixed plate, a number of first circular holes are provided. In the inner cavity of each first circular hole, a first circular guide rod is connected. A first return spring is sleeved on the surface of the circular guide rod away from the telescopic fixed plate. The U-shaped grooves respectively fit with the first rectangular support blocks connected to the outer surface of the sound insulation cavity and the second rectangular support blocks connected to the outer surface of the lower end of the molecular sieve.

[0006] Preferably, a device cover is connected to the upper end of the device main body. On one side surface of the front end of the device cover, a flow meter is connected. On the front surface of the device cover, at the end away from the flow meter, an oxygen outlet pipe is connected. The end of the oxygen outlet pipe away from the device cover is connected to a humidifier. The flow meter shows the concentration of oxygen stored in the molecular sieve, and the oxygen outlet pipe is connected to the molecular sieve.

[0007] Preferably, the sound insulation component includes a sound insulation top plate. On the lower surface of the sound insulation top plate, a first sealing block is connected. On both sides of both ends of the first sealing block, first circular connection holes are provided. The lower end of the sound insulation top plate is connected to a sound insulation frame body. On the upper surface of the sound insulation frame body, a first sealing groove is provided. On both sides of the upper end of the sound insulation frame body, second circular connection holes are provided, and the first circular connection holes correspond to the second circular connection holes. The sound insulation top plate is connected to the lower end of the device cover. Second circular holes are provided on both sides of both ends of the sound insulation top plate. The device cover is connected to the sound insulation top plate through fixing bolts passing through the second circular holes.

[0008] Preferably, a second sealing block is connected to the lower end of the sound insulation frame body. The lower end of the sound insulation frame body is connected to a sound insulation bottom plate. On the upper surface of the sound insulation bottom plate, a second sealing groove is connected.

[0009] Preferably, the first sealing block fits with the first sealing groove, and the second sealing block fits with the second sealing groove. By making the first sealing block coincide with the first sealing groove and the second sealing block coincide with the second sealing groove, the sound insulation top plate, the sound insulation frame body and the sound insulation bottom plate form a sound insulation hood.

[0010] Preferably, the connection component includes a button. One end of the button facing the device main body is connected to a second rectangular connection block. At both ends of the second rectangular connection block, circular sealing blocks are connected. The end of the button away from the second rectangular connection block is connected to a fixed block. The material of the circular sealing block is the same as that of the sound insulation hood. When the circular sealing block passes through the first circular connection hole and the second circular connection hole, the sound insulation top plate and the sound insulation frame body are fixed together.

[0011] Preferably, a triangular fixing block is connected to the upper end of the fixing block, a third rectangular connecting block is connected to the upper end of the triangular fixing block, a rectangular sliding block is connected to one end of the third rectangular connecting block facing the circular sealing block, a threaded rod is connected to the inner cavity of the rectangular sliding block, a knob is connected to the end of the threaded rod away from the rectangular sliding block, a first sliding groove is provided at the upper end of the inner cavity of the device body, the second rectangular connecting block is installed in the inner cavity of the first sliding groove, a second sliding groove is provided at the lower end of the first sliding groove, the rectangular sliding block is installed in the inner cavity of the second sliding groove, and the threaded rod is connected to the knob through the outer surface of the device body.

[0012] Compared with the prior art, the advantages of the present invention are as follows: 1. In the present invention, when one end of the fixing plate contacts the inner cavity of the device body, the support blocks of the sound insulation cavity and the molecular sieve can be accurately aligned with the U-shaped groove. At the same time, the first return spring extends to push the telescopic fixing plate to coincide with the second fixing groove, effectively fixing the internal components of the device and keeping their positions unchanged. This fixing method facilitates the replacement of the sound absorption bottom plate through the third sliding groove, greatly reducing the replacement difficulty and improving the replacement efficiency, thereby ensuring that the oxygen generator can quickly resume normal operation, improving work efficiency, and enhancing the user experience.

[0013] 2. In the present invention, the connection component uses a circular sealing block to penetrate the connection hole to fix the sound absorption top plate and the sound absorption frame body. The triangular fixing block cooperates with the third rectangular connecting block to replace the traditional fixing bolts. Moreover, the material of the circular sealing block is the same as that of the sound absorption machine cover, which will not affect the overall sound insulation performance, ensuring good sound insulation effect of the sound absorption machine cover while achieving a stable connection, improving the sound insulation efficiency, and creating a quiet use environment for users.

[0014] 3. In the present invention, sliding wheels are provided at the lower end of the device body, which is convenient for moving the position of the oxygen generator to meet the use requirements of different scenarios. The device cover body and the sound absorption top plate are connected by fixing bolts, which is convenient for disassembly and installation, facilitating the inspection and maintenance of internal components. The design of the connection component and the fixing component also makes the replacement and adjustment operations of the sound absorption machine cover and internal components more simple and fast, reducing the maintenance cost and difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of a partial structure of the present invention; Figure 3 is a schematic diagram of the internal structure of the present invention; Figure 4 is a schematic diagram of the internal structure of the device body of the present invention; Figure 5 is a schematic diagram of the structure of the fixing component of the present invention; Figure 6 Schematic structural diagram of the sound insulation component of the present invention; Figure 7 Schematic structural diagram of the connection component of the present invention.

[0016] Description of the reference numerals in the figure: 1, device main body; 2, sliding wheel; 3, device cover; 4, sealing block; 5, fixing component; 501, fixing plate; 502, U-shaped groove; 503, first rectangular sliding groove; 504, telescopic fixing plate; 505, first circular hole; 506, first circular guide rod; 507, first return spring; 6, primary filter; 7, sound insulation component; 701, sound insulation top plate; 702, first sealing block; 703, first circular connection hole; 704, sound insulation frame; 705, first sealing groove; 706, second circular connection hole; 707, second sealing block; 708, sound insulation bottom plate; 709, second sealing groove; 8, connection component; 801, button; 802, second rectangular connection block; 803, circular sealing block; 804, fixing block; 805, triangular fixing block; 806, third rectangular connection block; 809, rectangular sliding block; 810, threaded rod; 811, knob; 9, flowmeter; 11, oxygen outlet pipe; 12, humidifier; 13, air compressor; 14, molecular sieve; 15, rectangular support plate. Specific implementation mode

[0017] Embodiment: Please refer to Figure 1 , Figure 2 and Figure 3 , an oxygen generator with a built-in sound insulation cover, including a device main body 1, sliding wheels 2 are connected to the four corners at the lower end of the device main body 1, and a fixing component 5 is connected to the lower side surface at the front end of the device main body 1. A sealing block 4 is connected above the fixing component 5, a primary filter 6 is connected to one side above the sealing block 4, and a sound insulation component 7 is connected to the inner cavity of the device main body 1. Connection components 8 are connected to both sides at the upper end of the sound insulation component 7, a rectangular support plate 15 is connected to the inner cavity of the sound insulation component 7, an air compressor 13 is connected to the upper end surface of the rectangular support plate 15, one end of the air compressor 13 is connected to a molecular sieve 14, and a sound insulation cavity is connected to the outer surface of the air compressor 13. A radiator is connected to the inner cavity of the sound insulation cavity, and a first rectangular support block is connected to the outer surface of the sound insulation cavity at the same time. A second rectangular support block is connected to the outer surface at the lower end of the molecular sieve 14, a battery valve is connected to the lower end of the molecular sieve 14, one end of the primary filter 6 is connected to a first air pipe, the end of the first air pipe far from the primary filter 6 is connected to a secondary filter, and the end of the secondary filter far from the first air pipe is connected to a second air pipe, and the second air pipe is communicated with the inner cavity of the sound insulation component 7; Please refer to Figure 5, the fixing component 5 includes a fixing plate 501. On one end surface of the fixing plate 501 facing the inner cavity of the device main body 1, a number of U-shaped grooves 502 are provided. On both side surfaces of the two ends of the fixing plate 501, first rectangular sliding grooves 503 are provided. In the inner cavity of the first rectangular sliding grooves 503, a telescopic fixing plate 504 is connected. On the surface of the telescopic fixing plate 504, a number of first circular holes 505 are provided. In the inner cavity of each first circular hole 505, a first circular guide rod 506 is connected. On the surface of the first circular guide rod 506 far away from the telescopic fixing plate 504, a first return spring 507 is sleeved. And the U-shaped grooves 502 respectively fit with the first rectangular support blocks connected to the outer surface of the sound insulation cavity and the second rectangular support blocks connected to the outer surface of the lower end of the molecular sieve 14.

[0018] Specifically, when one end of the fixing plate 501 contacts the inner cavity of the device main body 1, the support blocks of the sound insulation cavity and the molecular sieve 14 can be accurately aligned with the U-shaped grooves 502. At the same time, the first return spring 507 extends to push the telescopic fixing plate 504 to coincide with the second fixing groove, effectively fixing the internal components of the device and keeping their positions unchanged. This fixing method facilitates the replacement of the sound absorption bottom plate through the third sliding groove, greatly reducing the replacement difficulty and improving the replacement efficiency, thereby ensuring that the oxygen generator can quickly resume normal operation, enhancing the work efficiency and improving the user experience.

[0019] Please refer to Figure 1 and Figure 4 , a device cover 3 is connected to the upper end of the device main body 1. On one side surface of the front end of the device cover 3, a flow meter 9 is connected. On the front surface of the device cover 3, at one end far away from the flow meter 9, an oxygen outlet pipe 11 is connected. The end of the oxygen outlet pipe 11 far away from the device cover 3 is connected to a humidifier 12. And the flow meter 9 displays the concentration of the oxygen stored in the molecular sieve 14. The oxygen outlet pipe 11 is connected to the molecular sieve 14.

[0020] Please refer to Figure 6 , the sound absorption component 7 includes a sound absorption top plate 701. On the lower end surface of the sound absorption top plate 701, a first sealing block 702 is connected. On both side surfaces of the two ends of the first sealing block 702, first circular connection holes 703 are provided. And a sound absorption frame body 704 is connected to the lower end of the sound absorption top plate 701. On the upper end surface of the sound absorption frame body 704, a first sealing groove 705 is provided. On both side surfaces of the upper end of the sound absorption frame body 704, second circular connection holes 706 are provided. And the first circular connection holes 703 correspond to the second circular connection holes 706. The sound absorption top plate 701 is connected to the lower end of the device cover 3. On both side surfaces of the two ends of the sound absorption top plate 701, second circular holes are provided. The device cover 3 is connected to the sound absorption top plate 701 through fixing bolts passing through the second circular holes.

[0021] Please refer to Figure 6, a second sealing block 707 is connected to the lower end of the sound insulation housing 704, and a sound insulation bottom plate 708 is connected to the lower end of the sound insulation housing 704. A second sealing groove 709 is connected to the upper end surface of the sound insulation bottom plate 708, and a third sliding groove is provided on the lower side surface of the front end of the device main body 1. The sound insulation bottom plate 708 is connected to the inner cavity surface of the device main body 1 through the third sliding groove.

[0022] Please refer to Figure 6 , the first sealing block 702 fits with the first sealing groove 705, and the second sealing block 707 fits with the second sealing groove 709. By making the first sealing block 702 coincide with the first sealing groove 705 and making the second sealing block 707 coincide with the second sealing groove 709, the sound insulation top plate 701, the sound insulation housing 704 and the sound insulation bottom plate 708 form a sound insulation hood.

[0023] Please refer to Figure 7 , the connecting component 8 includes a button 801. One end of the button 801 facing the device main body 1 is connected with a second rectangular connecting block 802. Circular sealing blocks 803 are connected to both ends of the second rectangular connecting block 802. One end of the button 801 far from the second rectangular connecting block 802 is connected with a fixing block 804. The material of the circular sealing block 803 is the same as that of the sound insulation hood. When the circular sealing block 803 penetrates through the first circular connecting hole 703 and the second circular connecting hole 706, the sound insulation top plate 701 and the sound insulation housing 704 are fixed together.

[0024] Specifically, by arranging sliding wheels 2 at the lower end of the device main body 1, it is convenient to move the position of the oxygen generator to meet the usage requirements of different scenarios. The device cover 3 and the sound insulation top plate 701 are connected by fixing bolts, which is convenient for disassembly and installation and facilitates the maintenance and repair of internal components. The designs of the connecting component 8 and the fixing component 5 also make the replacement and adjustment operations of the sound insulation hood and internal components more simple and fast, reducing the maintenance cost and difficulty.

[0025] Please refer to Figure 7 , a triangular fixing block 805 is connected to the upper end of the fixing block 804. A third rectangular connecting block 806 is connected to the upper end of the triangular fixing block 805. A rectangular sliding block 809 is connected to one end of the third rectangular connecting block 806 facing the circular sealing block 803. A threaded rod 810 is connected to the inner cavity of the rectangular sliding block 809. One end of the threaded rod 810 far from the rectangular sliding block 809 is connected with a knob 811. A first sliding groove is provided at the upper end of the inner cavity of the device main body 1. The second rectangular connecting block 802 is installed in the inner cavity of the first sliding groove. A second sliding groove is provided at the lower end of the first sliding groove. The rectangular sliding block 809 is installed in the inner cavity of the second sliding groove. The threaded rod 810 is connected to the knob 811 through the outer surface of the device main body 1.

[0026] Specifically, the sound insulation top plate 701 and the sound insulation frame body 704 are fixedly connected through the circular sealing block 803 of the connecting component 8 passing through the connecting hole. The triangular fixing block 805 is matched with the third rectangular connecting block 806 to replace the traditional fixing bolts. Moreover, the material of the circular sealing block 803 is the same as that of the sound insulation hood, which will not affect the overall sound insulation performance, ensuring that while achieving a firm connection, the good sound insulation effect of the sound insulation hood is maintained, improving the sound insulation efficiency, and creating a quiet use environment for users.

[0027] Working principle: First, when the sound insulation effect of the sound insulation hood in the oxygen generator decreases or even fails during long-term use due to reasons such as material aging, physical damage, or changes in the use environment, the sound insulation hood needs to be replaced. At this time, rotate the knob 811, which drives the threaded rod 810 to rotate, and then drives the rectangular sliding block 809 to move along the second sliding groove towards the direction of the knob 811 until the rectangular sliding block 809 moves to the other end of the second sliding groove. At this time, the triangular fixing block 805 is separated from the fixing block 804; When the triangular fixing block 805 is separated from the fixing block 804, pull the button 801 outwards, driving the second rectangular connecting block 802 to move along the first sliding groove towards the direction of the button 801, thereby driving the circular sealing block 803 and the fixing block 804 to move towards the direction of the button 801 until the second rectangular connecting block 802 touches the inner wall of the first sliding groove. At this time, the circular sealing block 803 is separated from the first circular connecting hole 703 and the second circular connecting hole 706. Then, pull the device cover 3 upwards, separating the first sealing block 702 from the first sealing groove 705, thereby separating the device cover 3 from the device main body 1, and separating the sound insulation top plate 701 and the sound insulation frame body 704, and then take out the sound insulation frame body 704 from the inner cavity of the device main body 1; When taking out the sound insulation frame body 704 from the inner cavity of the device main body 1, pull out the sealing block 4, exposing the fixing groove opened on the surface of the device main body 1. Then, pull out the fixing component 5 from the lower surface of the device main body 1, and move the fixing component 5 along the fixing groove towards the inner cavity of the device main body 1 until one end of the fixing plate 501 touches the inner cavity of the device main body 1; When one end of the fixed plate 501 comes into contact with the inner cavity of the device main body 1, the first rectangular support block connected to the outer surface of the sound insulation cavity and the second rectangular support block connected to the outer surface of the lower end of the molecular sieve 14 will coincide with the U-shaped groove 502. At the same time, the first return springs 507 connected to both ends of the fixed plate 501 perform an extension operation, thereby generating a thrust on the telescopic fixed plate 504, and further causing the telescopic fixed plate 504 to move along the first circular guide rod 506 towards the second fixed groove formed on the inner wall surface of the device main body 1, and making one end of the telescopic fixed plate 504 coincide with the second fixed groove. At this time, the fixing assembly 5 fixes the components inside the device main body 1 and keeps their positions unchanged. Then, the sound absorption bottom plate 708 is taken out from the third sliding groove opened on the lower side of the front surface of the device main body 1. At this time, the new sound absorption bottom plate 708 is moved along the third sliding groove towards the inner cavity of the device main body 1 until one end of the sound absorption bottom plate 708 touches the inner cavity surface of the device main body 1. Then, the fixing assembly 5 is restored to its original position, and by removing the fixing bolts, the device cover 3 is separated from the sound absorption top plate 701, and the device cover 3 is fixed to the new sound absorption top plate 701 through the fixing bolts. Then, the second sealing block 707 connected to the lower end of the new sound absorption frame body 704 coincides with the second sealing groove 709, and the first sealing block 702 connected to the lower end of the new sound absorption top plate 701 coincides with the first sealing groove 705. At this time, the replacement operation of the sound absorption machine cover is completed, and the connection assembly 8 is restored to its original position, thus ending all operations.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An oxygen generator with a built-in silencing hood, comprising a device main body (1), characterized in that: At the four corners of the lower end of the device main body (1), sliding wheels (2) are connected, and a fixing component (5) is connected to the lower side surface of the front end of the device main body (1). Above the fixing component (5), a sealing block (4) is connected. On one side above the sealing block (4), a primary filter (6) is connected. And in the inner cavity of the device main body (1), a sound-absorbing component (7) is connected. On both sides of the upper end of the sound-absorbing component (7), connecting components (8) are connected. In the inner cavity of the sound-absorbing component (7), a rectangular support plate (15) is connected. On the upper surface of the rectangular support plate (15), an air compressor (13) is connected. One end of the air compressor (13) is connected to a molecular sieve (14). The fixing component (5) includes a fixing plate (501). On the surface of one end of the fixing plate (501) facing the inner cavity of the device main body (1), a number of U-shaped grooves (502) are provided. And on both side surfaces of the two ends of the fixing plate (501), first rectangular sliding grooves (503) are provided. In the inner cavity of the first rectangular sliding grooves (503), a telescopic fixing plate (504) is connected. On the surface of the telescopic fixing plate (504), a number of first circular holes (505) are provided. In the inner cavity of each first circular hole (505), a first circular guide rod (506) is connected. The surface of the first circular guide rod (506) far from the telescopic fixing plate (504) is sleeved with a first return spring (507).

2. The oxygen generator with a built-in silencing hood according to claim 1, characterized in that: The upper end of the device main body (1) is connected with a device cover body (3). On one side surface of the front end of the device cover body (3), a flow meter (9) is connected. On the front surface of the device cover body (3) at the end far from the flow meter (9), an oxygen outlet pipe (11) is connected. One end of the oxygen outlet pipe (11) far from the device cover body (3) is connected to a humidifier (12).

3. The oxygen generator with a built-in silencing hood according to claim 2, characterized in that: The sound-absorbing component (7) includes a sound-absorbing top plate (701). On the lower surface of the sound-absorbing top plate (701), a first sealing block (702) is connected. On both sides of the two ends of the first sealing block (702), first circular connection holes (703) are provided. And the lower end of the sound-absorbing top plate (701) is connected with a sound-absorbing frame body (704). On the upper surface of the sound-absorbing frame body (704), a first sealing groove (705) is provided. And on both side surfaces of the upper end of the sound-absorbing frame body (704), second circular connection holes (706) are provided.

4. The oxygen generator with a built-in silencing hood according to claim 3, characterized in that: The lower end of the sound-absorbing frame body (704) is connected with a second sealing block (707). And the lower end of the sound-absorbing frame body (704) is connected with a sound-absorbing bottom plate (708). On the upper surface of the sound-absorbing bottom plate (708), a second sealing groove (709) is provided.

5. The oxygen generator with a built-in silencing hood according to claim 4, characterized in that: The first sealing block (702) is fitted with the first sealing groove (705), and the second sealing block (707) is fitted with the second sealing groove (709).

6. The oxygen generator with a built-in silencer hood according to claim 5, characterized in that: The connection component (8) includes a button (801). One end of the button (801) facing the device main body (1) is connected with a second rectangular connection block (802). Circular sealing blocks (803) are connected to both ends of the second rectangular connection block (802), and a fixing block (804) is connected to the end of the button (801) far from the second rectangular connection block (802).

7. The oxygen generator with a built-in silencer hood according to claim 6, characterized in that: A triangular fixing block (805) is connected to the upper end of the fixing block (804). A third rectangular connection block (806) is connected to the upper end of the triangular fixing block (805). One end of the third rectangular connection block (806) facing the circular sealing block (803) is connected with a rectangular sliding block (809). A threaded rod (810) is connected to the inner cavity of the rectangular sliding block (809). One end of the threaded rod (810) far from the rectangular sliding block (809) is connected with a knob (811).

Images