Opening reflux device of oxygen compressor

Abstract

A backflow mechanism comprises a connecting pipe, a limiting groove is formed in the middle of the outer wall of the connecting pipe, a sleeve is fixedly installed in the middle of the inner wall of the connecting pipe, and the inner wall of the sleeve is slidably connected with a first extrusion part; the end, located in the sleeve, of the first extrusion part is fixedly connected with a first spring, the end, away from the first spring, of the first extrusion part is fixedly connected with a push plate, the side edge of the outer wall of the push plate is slidably connected with the inner wall of the connecting pipe, and the end, away from the first extrusion part, of the first spring is fixedly connected with a second extrusion part. The end, located outside the sleeve, of the second extrusion piece upwards penetrates out of the connecting pipe, the top end of the second extrusion piece is fixedly connected with a limiting sleeve, the inner side of the limiting sleeve is slidably connected with the surface of the limiting groove, and the strength of the first spring can be improved by rotating a rotary knob on the outer side of the connecting pipe; therefore, the air pressure threshold value when the air flow enters the return pipe is adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen compressors, in particular to an opening and reflux device of an oxygen compressor. Background Art

[0002] When the oxygen compressor is started, part of the oxygen is returned to the intake side through the reflux device to reduce the load of the compressor and avoid motor overload. However, it is not easy to adjust the threshold value of the reflux device when it is unblocked with the common reflux device. Moreover, since the reflux device is used for pressure regulation and is connected to the pipeline, it is usually connected by threads and is not easy to disassemble and maintain. Therefore, a reflux device for opening an oxygen compressor is proposed to solve the above problems. Utility Model Content

[0003] The technical problems to be solved by the utility model are as follows: It is not easy to adjust the threshold value of the common reflux device when the reflux device is unblocked, and the reflux device is usually connected to the pipeline through threads because it is used for pressure regulation and is not easy to disassemble and maintain.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] An opening and reflux device for an oxygen compressor comprises a reflux mechanism, and a conveying mechanism is arranged on both sides of the reflux mechanism;

[0006] Also includes:

[0007] Wherein, the reflux mechanism comprises a connecting pipe, a limiting groove is provided in the middle of the outer wall of the connecting pipe, a sleeve is fixedly installed in the middle of the inner wall of the connecting pipe, an extrusion piece 1 is slidably connected to the inner wall of the sleeve, one end of the extrusion piece 1 located in the sleeve is fixedly connected to a spring 1, the other end of the extrusion piece 1 extends to the outside of the sleeve, and the end of the extrusion piece 1 located away from the spring 1 is fixedly connected to a push plate, and the outer wall side of the push plate is slidably connected to the inner wall of the connecting pipe;

[0008] Among them, the end of spring one located away from extrusion piece one is fixedly connected to extrusion piece two, the other end of extrusion piece two extends to the outside of the sleeve, the end of extrusion piece two located outside the sleeve passes through the connecting pipe upward, and the top end of extrusion piece two is fixedly connected to a limiting sleeve, and the inner side of the limiting sleeve is slidably connected to the surface of the limiting groove.

[0009] As a further solution of the utility model: the lower end of the outer wall of the connecting tube is rotatably connected to a screw rod, the length direction of the screw rod is consistent with the length direction of the connecting tube, one end of the screw rod passes through the connecting tube and is fixedly connected to a knob, the outer wall thread sleeve of the screw rod is provided with a screw sleeve, and one side of the outer wall of the screw sleeve is fixedly connected to a limit sleeve.

[0010] As a further solution of the utility model: an air inlet cavity is opened on the inner wall of the connecting tube and close to the push plate, an air outlet cavity is opened on the inner wall of the connecting tube and located away from the air inlet cavity, and a plurality of return pipes are fixedly connected to the outer wall of the connecting tube, one end of the return pipe is connected to the inside of the air inlet cavity, and the other end of the return pipe is connected to the inside of the air outlet cavity.

[0011] As a further solution of the utility model: both ends of the outer wall of the connecting tube are slidably connected with a push ring, the side walls of the two push rings are fixedly connected with a spring 2, the other end of the spring 2 is fixedly connected to the outer wall of the connecting tube, and the push ring is located on the side close to the spring 2 and is in active contact with the outer wall of the connecting tube.

[0012] As a further solution of the utility model: a ball is movably connected to the inner wall of the connecting tube and located inside the pushing ring, one end of the ball extends to the middle of the connecting tube, and the inner wall of the pushing ring and the side away from the second spring are thinner.

[0013] As a further solution of the utility model: the delivery mechanism includes a plug, and the middle parts of both ends of the connecting pipe are snap-connected with the plug, and the two ends of the two plugs located away from the connecting pipe are fixedly connected with the gas delivery pipe.

[0014] As a further solution of the utility model: a sealing ring is fixedly connected to the outer wall of the plug near the sealing ring, the side wall of the sealing ring is against the connecting pipe, and slots are opened on both sides of the outer wall of the plug, and the inner walls of the two slots are respectively engaged and connected with two ball bearings.

[0015] Beneficial effects of the utility model:

[0016] (1) The utility model refluxes gas through the reflux pipe on the side of the connecting pipe. A push plate supported by a spring is arranged inside the connecting pipe to intercept external gas from entering the reflux pipe. The push plate can be moved only when the pressure outside the push plate is large enough, so that the push plate moves to the rear of the reflux pipe for gas reflux. The strength of the spring can be increased by rotating the knob outside the connecting pipe, thereby adjusting the pressure threshold when the airflow enters the reflux pipe;

[0017] (2) When the connecting pipe needs to be inspected or replaced, the lock with the gas pipes on both sides can be released by pushing the push rings on both sides, and the separation can be completed by pulling out the plugs on both sides of the connecting pipe. The operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the connecting pipe in the utility model;

[0021] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure of region A;

[0022] Figure 4 It is a cross-sectional structural schematic diagram of the plug in the utility model;

[0023] Figure 5 It is a schematic diagram of the internal structure of the sleeve in the utility model;

[0024] Figure 6 It is a side structural schematic diagram of the limiting sleeve in the utility model.

[0025] In the figure: 1. reflux mechanism; 101. connecting pipe; 102. limiting groove; 103. sleeve; 104. spring one; 105. extrusion piece one; 106. push plate; 107. extrusion piece two; 108. limiting sleeve; 109. screw sleeve; 110. screw rod; 111. knob; 112. air inlet chamber; 113. reflux pipe; 114. air outlet chamber; 115. spring two; 116. push ring; 117. ball; 2. conveying mechanism; 201. air delivery pipe; 202. plug; 203. sealing ring; 204. slot. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] like Figure 1-6As shown, an opening and reflow device of an oxygen compressor includes a reflow mechanism 1, and a conveying mechanism 2 is arranged on both sides of the reflow mechanism 1; and further includes: wherein the reflow mechanism 1 includes a connecting pipe 101, a limiting groove 102 is arranged in the middle of the outer wall of the connecting pipe 101, a sleeve 103 is fixedly installed in the middle of the inner wall of the connecting pipe 101, and an extrusion piece 105 is slidably connected to the inner wall of the sleeve 103, and one end of the extrusion piece 105 located in the sleeve 103 is fixedly connected to a spring 104, and the other end of the extrusion piece 105 extends to the outside of the sleeve 103, and the extrusion piece 105 is fixedly connected to the spring 104. 05 is located at one end away from the spring 104 and is fixedly connected to a push plate 106, and the outer wall side of the push plate 106 is slidably connected to the inner wall of the connecting tube 101; wherein, the spring 104 is located at one end away from the extrusion piece 105 and is fixedly connected to the extrusion piece 2 107, and the other end of the extrusion piece 2 107 extends to the outside of the sleeve 103, and the end of the extrusion piece 2 107 located outside the sleeve 103 passes through the connecting tube 101 upward, and the top of the extrusion piece 2 107 is fixedly connected to the limiting sleeve 108, and the inner side of the limiting sleeve 108 is slidably connected to the surface of the limiting groove 102, such as Figure 2 As shown, the push plate 106 is restricted by the inner wall of the connecting pipe 101 and cannot move to the right;

[0028] The lower end of the outer wall of the connecting tube 101 is rotatably connected with a screw rod 110, the length direction of the screw rod 110 is consistent with the length direction of the connecting tube 101, one end of the screw rod 110 passes through the connecting tube 101 and is fixedly connected with a knob 111, and the outer wall of the screw rod 110 is threadedly sleeved with a screw sleeve 109, and one side of the outer wall of the screw sleeve 109 is fixedly connected with the limit sleeve 108, such as Figure 2 As shown, by rotating the knob 11, the screw rod 110 rotates to drive the screw sleeve 109 to move, so that the limiting sleeve 108 moves outside the limiting groove 102;

[0029] An air inlet cavity 112 is provided on the inner wall of the connecting tube 101 and on the side close to the push plate 106, and an air outlet cavity 114 is provided on the inner wall of the connecting tube 101 and on the side away from the air inlet cavity 112. A plurality of return pipes 113 are fixedly connected to the outer wall of the connecting tube 101, one end of the return pipe 113 is connected to the inside of the air inlet cavity 112, and the other end of the return pipe 113 is connected to the inside of the air outlet cavity 114. Figure 2 As shown, the return gas pushes the push plate 106 to the left, and then enters the gas outlet cavity 114 from the return pipe 113 exposed from the top;

[0030] Both ends of the outer wall of the connecting tube 101 are slidably connected with a push ring 116, and the side walls of the two push rings 116 are fixedly connected with a spring 2 115, and the other end of the spring 2 115 is fixedly connected to the outer wall of the connecting tube 101, and the push ring 116 is located on a side close to the spring 2 115 and is in active contact with the outer wall of the connecting tube 101, and the inner wall of the connecting tube 101 and located on the inner side of the push ring 116 are movably connected with a ball 117, and one end of the ball 117 extends toward the middle of the connecting tube 101, and the inner wall of the push ring 116 and located away from the spring 2 The thickness of one side of the second 115 is relatively thin, and the conveying mechanism 2 includes a plug 202. The middle parts of both ends of the connecting tube 101 are snap-connected with the plug 202. The two plugs 202 are located at the ends away from the connecting tube 101 and are fixedly connected with the gas delivery pipe 201. The outer wall of the plug 202 and the seal ring 203 are fixedly connected. The side wall of the seal ring 203 is against the connecting tube 101. The outer wall of the plug 202 is provided with a card slot 204 on both sides. The inner walls of the two card slots 204 are snap-connected with the two balls 117 respectively. Figure 2-Figure 4 As shown, when the push ring 116 moves to the left, the plug 202 is pulled to the right, and the locking groove 204 can push the ball 117 to the outside of the connecting tube 101.

[0031] The working principle of this utility model:

[0032] When the device is in use, the push ring 116 is moved toward the middle of the connecting tube 101, and the inner wall of the push ring 116 is separated from the ball 117, so that the ball 117 can move toward the outside of the connecting tube 101. At this time, the plug 202 can be inserted into both ends of the connecting tube 101 without being hindered by the ball 117. After the plug 202 is inserted in place, the push ring 116 is released and the spring 115 drives it to reset. The push ring 116 presses against the ball 117 and snaps into the inside of the slot 204 to complete the locking of the plug 202.

[0033] The airflow is input into the air inlet cavity 112 from the air supply pipe 201 and pushes the push plate 106. The spring 104 is compressed and contracts to drive the push plate 106 to move toward the return pipe 113. When the push plate 116 moves to the rear of the return pipe 113, the airflow can enter the return pipe 113, and then the airflow enters the air outlet cavity 114 along the return pipe 113 and goes side by side to the air supply pipe 201 at the other end. The screw 110 is driven to rotate by rotating the knob. The thread on the surface of the screw 110 moves along the limit groove 102 by pushing the limit sleeve 108, thereby driving the extrusion piece 2 107 to compress the spring 104. According to the deformation degree of the spring 104, the force required for the extrusion piece 105 to push the spring 104 to achieve displacement is changed, thereby changing the air pressure required to push the push plate 106.

[0034] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. An opening and reflux device for an oxygen compressor, comprising a reflux mechanism (1), wherein both sides of the reflux mechanism (1) are provided with a conveying mechanism (2); It is characterized in that Also includes: The reflux mechanism (1) comprises a connecting tube (101), a limiting groove (102) is provided in the middle of the outer wall of the connecting tube (101), a sleeve (103) is fixedly installed in the middle of the inner wall of the connecting tube (101), an extrusion piece (105) is slidably connected to the inner wall of the sleeve (103), one end of the extrusion piece (105) located in the sleeve (103) is fixedly connected to a spring (104), the other end of the extrusion piece (105) extends to the outside of the sleeve (103), and the end of the extrusion piece (105) located away from the spring (104) is fixedly connected to a push plate (106), and the outer wall side of the push plate (106) is slidably connected to the inner wall of the connecting tube (101); The spring one (104) is fixedly connected to an extrusion piece two (107) at one end away from the extrusion piece one (105), and the other end of the extrusion piece two (107) extends to the outside of the sleeve (103). The end of the extrusion piece two (107) located outside the sleeve (103) passes through the connecting pipe (101) upward, and the top end of the extrusion piece two (107) is fixedly connected to a limiting sleeve (108), and the inner side of the limiting sleeve (108) is slidably connected to the surface of the limiting groove (102).

2. The opening and reflux device of an oxygen compressor according to claim 1, characterized in that: A screw rod (110) is rotatably connected to the lower end of the outer wall of the connecting tube (101); the length direction of the screw rod (110) is consistent with the length direction of the connecting tube (101); one end of the screw rod (110) passes through the connecting tube (101) and is fixedly connected to a knob (111); a screw sleeve (109) is threadedly sleeved on the outer wall of the screw rod (110); one side of the outer wall of the screw sleeve (109) is fixedly connected to a limiting sleeve (108).

3. The opening and reflux device of an oxygen compressor according to claim 1, characterized in that: An air inlet cavity (112) is provided on the inner wall of the connecting tube (101) and on a side close to the push plate (106); an air outlet cavity (114) is provided on the inner wall of the connecting tube (101) and on a side away from the air inlet cavity (112); a plurality of return pipes (113) are fixedly connected to the outer wall of the connecting tube (101); one end of the return pipe (113) is connected to the inside of the air inlet cavity (112); and the other end of the return pipe (113) is connected to the inside of the air outlet cavity (114).

4. The opening and reflux device of an oxygen compressor according to claim 1, characterized in that: Both ends of the outer wall of the connecting tube (101) are slidably connected with a push ring (116), and the side walls of the two push rings (116) are fixedly connected with a second spring (115), the other end of the second spring (115) is fixedly connected to the outer wall of the connecting tube (101), and the push ring (116) is located on a side close to the second spring (115) and is in active contact with the outer wall of the connecting tube (101).

5. The opening and reflux device of an oxygen compressor according to claim 4, characterized in that: A ball (117) is movably connected to the inner wall of the connecting tube (101) and located inside the pushing ring (116), one end of the ball (117) extends toward the middle of the connecting tube (101), and the inner wall of the pushing ring (116) and located on the side away from the second spring (115) is relatively thin.

6. The opening and reflux device of an oxygen compressor according to claim 1, characterized in that: The conveying mechanism (2) comprises a plug (202), the middle parts of both ends of the connecting tube (101) are snap-connected with the plug (202), and the ends of the two plugs (202) located away from the connecting tube (101) are fixedly connected with the gas delivery tube (201).

7. The opening and reflux device of an oxygen compressor according to claim 6, characterized in that: A sealing ring (203) is fixedly connected to the outer wall of the plug (202) near the sealing ring (203), and the side wall of the sealing ring (203) abuts against the connecting pipe (101). Slots (204) are provided on both sides of the outer wall of the plug (202), and the inner walls of the two slots (204) are respectively engaged and connected with two balls (117).

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