Sealing device for industrial gas compressor

Abstract

The utility model provides a sealing device for an industrial gas compressor, which comprises a mounting cylinder detachably connected with a cylinder cover, and a first guide cylinder, a first guide hole, a sealing ring and a second guide cylinder which are matched with a piston rod and detachably arranged on the inner side wall of the lower part of the mounting cylinder, and a second guide hole matched with the piston rod is vertically formed in the second guide cylinder. According to the sealing device for the industrial gas compressor, the basic requirement for sealing the connecting position of the cylinder cover and the piston rod can be met through the sealing structure, the operation process of the piston rod can be effectively guided through the guiding structure, extrusion deformation of the sealing structure is avoided, and the service life of the sealing structure is prolonged. Therefore, the use requirements of people can be better met.

Description

Technical Field

[0001] The utility model belongs to the technical field of industrial gas compressors, and in particular relates to a sealing device for industrial gas compressors. Background Art

[0002] During operation, industrial gas compressors require a sealing device on the cylinder head to seal the connection between the cylinder head and the piston rod. While existing sealing devices can meet the basic sealing requirements for the connection between the cylinder head and the piston rod, they often need to not only meet the basic function of sealing the connection between the cylinder body and the piston rod, but also guide the piston rod during operation. When the piston rod becomes skewed during operation, the sealing structure is squeezed, deformed, and worn, which in turn exacerbates the wear on the sealing structure. This makes the sealing structure susceptible to wear in a short period of time, affecting the sealing effect. This can cause significant inconvenience to users and cannot fully meet their needs. Utility Model Content

[0003] In view of this, the utility model addresses the deficiencies of the existing technology and provides a sealing device for an industrial gas compressor, which can not only meet the basic requirements of sealing the connection between the cylinder head and the piston rod through the sealing structure, but also effectively guide the operation process of the piston rod through the guide structure, thereby avoiding extrusion deformation of the sealing structure, thereby better meeting people's usage needs.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a sealing device for an industrial gas compressor, comprising a mounting cylinder detachably connected to a cylinder head, a first guide cylinder adapted to a piston rod being detachably provided on the lower inner wall of the mounting cylinder, a first guide hole adapted to the piston rod being vertically provided inside the first guide cylinder, a sealing ring which abuts against the top of the first guide cylinder and adapted to the piston rod being clamped in the mounting cylinder, a second guide cylinder adapted to the piston rod and used for pressing the top of the sealing ring being detachably provided on the upper inner wall of the mounting cylinder, a second guide hole adapted to the piston rod being vertically provided inside the second guide cylinder.

[0005] As a further improvement of the present invention, the mounting tube is screwed and fixed to the cylinder cover, an outer side wall of the mounting tube is provided with a connecting external thread, and a threaded connection hole matched with the connecting external thread is provided on the cylinder cover.

[0006] As a further improvement of the present invention, a twist nut is fixedly provided on the outer side wall of the upper end of the mounting cylinder, and a first gasket is sleeved on the mounting cylinder and located between the top of the cylinder cover and the twist nut.

[0007] As a further improvement of the present invention, the first guide cylinder is screwed and fixed to the inner wall of the mounting cylinder, a fixed external thread is provided on the outer wall of the first guide cylinder, and a fixed internal thread matching the fixed external thread is provided on the lower inner wall of the mounting cylinder. The lower end of the first guide cylinder extends to the lower part of the mounting cylinder, and a rotating nut is fixedly provided on the outer wall of the lower end of the first guide cylinder, and the circumscribed circle of the rotating nut is not larger than the inner hole of the mounting cylinder.

[0008] As a further improvement of the present invention, the second guide cylinder is clamped and fixed to the mounting cylinder, the upper end of the second guide cylinder extends above the mounting cylinder, and a fastening plate is also provided at the side end of the second mounting cylinder, and a fastening bolt for threadedly fixing the second mounting cylinder is provided on the fastening plate, and a threaded fastening hole compatible with the fastening bolt is provided on the second mounting cylinder.

[0009] As a further improvement of the present invention, the fastening plate is further provided with a second gasket sleeved on the outside of the fastening bolt.

[0010] As a further improvement of the present invention, a first limit slot is further provided at the top of the first guide cylinder, a second limit slot is further provided at the bottom of the second guide cylinder, a first limit slot is provided at the bottom of the sealing ring and is fixedly connected to the first limit slot, and a second limit slot is provided at the top of the sealing ring and is fixedly connected to the second limit slot.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] First, the user can adjust the mounting barrel by turning the nut, so that the mounting barrel and the cylinder head can be flexibly screwed together through the cooperation of the connecting external thread and the connecting internal thread.

[0013] Secondly, the user can first screw and fix the first guide cylinder to the inner wall of the lower part of the mounting cylinder by rotating the nut, and then the sealing ring can be placed in the middle end of the inner part of the mounting cylinder, and the sealing ring and the bottom can be in conflict with the top of the first guide cylinder. Then, the second guide cylinder can be plugged and fixed to the upper part of the mounting cylinder, and the bottom of the second guide cylinder can be pressed against the top of the sealing ring. Then, the fastening bolt can be passed through the fastening plate and screwed and fixed with the threaded fastening hole, thereby realizing flexible fixation of the second guide cylinder and the mounting cylinder, and realizing flexible fixation of the sealing ring; then the sealing ring can be sealed at the connection between the piston rod and the cylinder head, and the first guide cylinder and the second guide cylinder can be used to guide and limit the operation of the piston rod relative to the cylinder head and the sealing ring, so as to avoid the piston rod from deviating and causing extrusion deformation to the sealing ring, thereby avoiding easy damage to the sealing ring.

[0014] Thirdly, the first gasket can prevent the top of the cylinder head from being worn by the screwing nut, and the second gasket can prevent the fastening bolts from being worn by the fastening plate.

[0015] Fourthly, through the cooperation of the first limit groove and the first limit ring, the sealing ring can be prevented from being laterally offset relative to the top of the first guide cylinder. Through the cooperation of the second detachable limit and the second limit ring, the sealing ring can be prevented from being laterally offset relative to the bottom of the second guide cylinder, so that the first guide cylinder, the sealing ring and the second guide cylinder can be firmly connected together. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a structural diagram of the installation cylinder, connecting external thread, fixing internal thread, screwing nut, and first gasket of the utility model;

[0019] Figure 3 This is a structural diagram of the cylinder cover and threaded connection holes of the utility model;

[0020] Figure 4 This is a structural diagram of the second guide cylinder, the second guide hole, the fastening plate, and the second limiting collar of the present invention;

[0021] Figure 5 This is a structural diagram of the first guide cylinder, the first guide hole, the fixed external thread, the rotating nut, and the first limiting collar of the present invention;

[0022] Figure 6 This is a structural diagram of the sealing ring and the first limiting groove of the utility model;

[0023] Figure 7 It is a structural schematic diagram of the sealing ring and the second limiting groove of the utility model.

[0024] In the figure: 100, cylinder head; 101, mounting cylinder; 102, first guide cylinder; 103, first guide hole; 104, sealing ring; 105, second guide cylinder; 106, second guide hole; 107, connecting external thread; 108, threaded connecting hole; 109, fixing external thread; 110, fixing internal thread; 111, rotating nut; 112, fastening plate; 113, fastening bolt; 201, twisting nut; 202, first gasket; 203, first limiting slot; 204, second limiting slot; 205, first limiting clamping ring; 206, second limiting clamping ring; 207, second gasket. DETAILED DESCRIPTION

[0025] To better understand the present invention, the following examples further illustrate the present invention. However, the present invention is not limited to the following examples. In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be practiced without one or more of these details.

[0026] like Figure 1 As shown, a sealing device for an industrial gas compressor includes a mounting cylinder 101 detachably connected to a cylinder head 100, a first guide cylinder 102 adapted to a piston rod is detachably provided on the lower inner side wall of the mounting cylinder 101, a first guide hole 103 adapted to the piston rod is vertically provided inside the first guide cylinder 102, a sealing ring 104 that abuts against the top of the first guide cylinder 102 and adapted to the piston rod is clamped in the mounting cylinder 101, a second guide cylinder 105 adapted to the piston rod and used to press the top of the sealing ring 104 is detachably provided on the upper inner side wall of the mounting cylinder 101, and a second guide hole 106 adapted to the piston rod is vertically provided inside the second guide cylinder 105.

[0027] like Figure 1 、 2 As shown in , 3 , the mounting tube 101 is screwed and fixed to the cylinder cover 100 , a connecting external thread 107 is provided on the outer side wall of the mounting tube 101 , and a threaded connection hole 108 matched with the connecting external thread 107 is provided on the cylinder cover 100 .

[0028] like Figure 1 、 2 As shown, a screw nut 201 is fixedly provided on the outer side wall of the upper end of the mounting cylinder 101 , and a first gasket 202 is sleeved on the mounting cylinder 101 and located between the top of the cylinder cover 100 and the screw nut 201 .

[0029] like Figure 2 、 5 As shown, the first guide cylinder 102 is screwed and fixed to the inner wall of the mounting cylinder 101, a fixed external thread 109 is provided on the outer wall of the first guide cylinder 102, and a fixed internal thread 110 that is compatible with the fixed external thread 109 is provided on the lower inner wall of the mounting cylinder 101. The lower end of the first guide cylinder 102 extends to the lower part of the mounting cylinder 101, and a rotating nut 111 is fixedly provided on the outer wall of the lower end of the first guide cylinder 102. The circumscribed circle of the rotating nut 111 is not larger than the inner hole of the mounting cylinder 101.

[0030] like Figure 1 、 2As shown in Figure 4, the second guide cylinder 105 is fixed to the mounting cylinder 101, and the upper end of the second guide cylinder 105 extends above the mounting cylinder 101. A fastening plate 112 is further provided at the side end of the second mounting cylinder 101. The fastening plate 112 is provided with a fastening bolt 113 for screwing and fixing with the mounting cylinder 101, and the second mounting cylinder 101 is provided with a threaded fastening hole adapted to the fastening bolt 113.

[0031] like Figure 1 As shown, the fastening plate 112 is further provided with a second gasket 207 sleeved on the outside of the fastening bolt 113 .

[0032] like Figure 4 、 5 As shown in Figures 6 and 7, a first limiting slot 203 is further provided at the top of the first guide cylinder 102, and a second limiting slot 204 is further provided at the bottom of the second guide cylinder 105. A first limiting slot 205 is provided at the bottom of the sealing ring 104 to be fixedly engaged with the first limiting slot 203, and a second limiting slot 206 is provided at the top of the sealing ring 104 to be fixedly engaged with the second limiting slot 204. The cooperation between the first limiting slot 203 and the first limiting slot 205 can prevent the sealing ring 104 from lateral displacement relative to the top of the first guide cylinder 102. The cooperation between the second limiting slot 203 and the second limiting slot 206 can prevent the sealing ring 104 from lateral displacement relative to the bottom of the second guide cylinder 105, thereby ensuring that the first guide cylinder 102, the sealing ring 104, and the second guide cylinder 105 are firmly connected together.

[0033] The user can use a twisting tool to apply force to the twisting nut 201, thereby twisting and adjusting the mounting cylinder 101. Through the cooperation of the connecting external thread 107 and the connecting internal thread, the mounting cylinder 101 and the cylinder head 100 are flexibly screwed together, and the bottom of the twisting nut 201 is in conflict with the top of the first gasket 202.

[0034] Then, a force can be applied to the rotating nut 111 with the help of a tool, so that the first guide cylinder 102 is screwed and fixed to the lower inner wall of the installation cylinder 101, and the top of the rotating nut 111 is in conflict with the bottom of the installation cylinder 101; then the sealing ring 104 can be placed in the middle end of the interior of the installation cylinder 101, and the bottom of the sealing ring 104 is in conflict with the top of the first guide cylinder 102, and then the second guide cylinder 105 can be plugged and fixed to the upper part of the installation cylinder 101, and the bottom of the second guide cylinder 105 is pressed against the top of the sealing ring 104, and then the fastening bolt 113 can be tightened. It passes through the fastening plate 112 and is screwed and fixed with the threaded fastening hole, so as to realize flexible fixation of the second guide cylinder 105 and the mounting cylinder 101, and realize flexible fixation of the sealing ring 104; then the sealing ring 104 can be used to seal the connection between the piston rod and the cylinder cover 100, and the first guide cylinder 102, the first guide hole 103, the second guide cylinder 105 and the second guide hole 106 can be used to guide and limit the movement of the piston rod relative to the cylinder cover 100 and the sealing ring 104, so as to avoid the piston rod from deviating and causing extrusion deformation to the sealing ring 104, thereby avoiding easy damage to the sealing ring 104.

[0035] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A sealing device for an industrial gas compressor, comprising a mounting barrel (101) detachably connected to a cylinder head (100), characterized in that: A first guide cylinder (102) adapted to the piston rod is detachably provided on the lower inner side wall of the installation cylinder (101); a first guide hole (103) adapted to the piston rod is vertically provided inside the first guide cylinder (102); a sealing ring (104) adapted to the piston rod and in contact with the top of the first guide cylinder (102) is provided in the installation cylinder (101); a second guide cylinder (105) adapted to the piston rod and used for pressing the top of the sealing ring (104) is detachably provided on the upper inner side wall of the installation cylinder (101); a second guide hole (106) adapted to the piston rod is vertically provided inside the second guide cylinder (105).

2. The sealing device for an industrial gas compressor according to claim 1, wherein: The mounting tube (101) is screwed and fixed to the cylinder cover (100); a connecting external thread (107) is provided on the outer wall of the mounting tube (101); and a threaded connection hole (108) adapted to the connecting external thread (107) is provided on the cylinder cover (100).

3. The sealing device for an industrial gas compressor according to claim 2, wherein: A twist nut (201) is fixedly provided on the outer side wall of the upper end of the installation cylinder (101), and a first gasket (202) is sleeved on the installation cylinder (101) and is located between the top of the cylinder cover (100) and the twist nut (201).

4. The sealing device for an industrial gas compressor according to claim 3, wherein: The first guide cylinder (102) is screwed and fixed to the inner wall of the mounting cylinder (101); a fixed external thread (109) is provided on the outer wall of the first guide cylinder (102); a fixed internal thread (110) adapted to the fixed external thread (109) is provided on the lower inner wall of the mounting cylinder (101); the lower end of the first guide cylinder (102) extends to the lower part of the mounting cylinder (101); a rotating nut (111) is fixedly provided on the outer wall of the lower end of the first guide cylinder (102); and the circumscribed circle of the rotating nut (111) is not larger than the inner hole of the mounting cylinder (101).

5. The sealing device for an industrial gas compressor according to claim 4, characterized in that: The second guide cylinder (105) is fixedly connected to the mounting cylinder (101), and the upper end of the second guide cylinder (105) extends above the mounting cylinder (101). A fastening plate (112) is further provided at the side end of the second mounting cylinder (101). The fastening plate (112) is provided with a fastening bolt (113) for screwing and fixing with the mounting cylinder (101), and the second mounting cylinder (101) is provided with a threaded fastening hole adapted to the fastening bolt (113).

6. The sealing device for an industrial gas compressor according to claim 5, characterized in that: The fastening plate (112) is also provided with a second gasket (207) sleeved on the outside of the fastening bolt (113).

7. The sealing device for an industrial gas compressor according to claim 6, wherein: The top of the first guide cylinder (102) is further provided with a first limiting slot (203), the bottom of the second guide cylinder (105) is further provided with a second limiting slot (204), the bottom of the sealing ring (104) is provided with a first limiting slot (205) fixedly engaged with the first limiting slot (203), and the top of the sealing ring (104) is provided with a second limiting slot (206) fixedly engaged with the second limiting slot (204).

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