阅读说明：本技术 一种衡压换气装置 (Constant pressure air interchanger ) 是由 张琼 于 2020-12-30 设计创作，主要内容包括：本申请提供了一种衡压换气装置,包括进气筒、出气筒、对冲轴及驱动结构,所述对冲轴包括导向轴及分别设置于导向轴相对两侧的进气轴及出气轴,所述进气筒具有进气筒内腔,其远离导向轴的一端形成有与外界连通的第一进气口且靠近导向轴的一端密封并设置有第一单向阀,所述进气轴的一端收容于进气筒内腔中且设置有第一活塞,所述第一活塞与进气筒的内壁密封连接,所述出气筒具有出气筒内腔,其靠近导向轴的一端形成第二进气口且远离导向轴的一端密封并设置有第二单向阀,所述出气轴的一端收容于出气筒内腔中且设置有第二活塞,所述第二活塞与出气筒的内壁密封连接,所述驱动结构驱动所述进气轴与出气轴同步左右往复运动。(The application provides a balanced pressure air interchanger, which comprises an air inlet cylinder, an air outlet cylinder, a hedging shaft and a driving structure, wherein the hedging shaft comprises a guide shaft, an air inlet shaft and an air outlet shaft which are respectively arranged on two opposite sides of the guide shaft, the air inlet cylinder is provided with an air inlet cylinder inner cavity, one end of the air inlet cylinder, which is far away from the guide shaft, is provided with a first air inlet communicated with the outside and a first one-way valve, one end of the air inlet shaft is contained in the air inlet cylinder inner cavity and is provided with a first piston, the first piston is connected with the inner wall of the air inlet cylinder in a sealing way, the air outlet cylinder is provided with an air outlet cylinder inner cavity, one end of the air outlet shaft, which is close to the guide shaft, forms a second air inlet and one end of the air outlet shaft is sealed and is provided with a second one-way valve, one end of the air outlet shaft is contained in the, the driving structure drives the air inlet shaft and the air outlet shaft to synchronously reciprocate left and right.)

1. The utility model provides a balanced pressure breather, includes an air inlet section of thick bamboo and goes out a section of thick bamboo, with an air inlet section of thick bamboo and go out the drive structure of offset shaft and drive offset shaft that a section of thick bamboo is connected, its characterized in that: the hedging shaft comprises a guide shaft, an air inlet shaft and an air outlet shaft which are respectively arranged at two opposite sides of the guide shaft, the air inlet cylinder is provided with an air inlet cylinder inner cavity, one end of the air inlet cylinder, which is far away from the guide shaft, is provided with a first air inlet communicated with the outside, one end of the air inlet cylinder, which is close to the guide shaft, is sealed and is provided with a first one-way valve, one end of the air inlet shaft is accommodated in the air inlet cylinder inner cavity and is provided with a first piston, the first piston is hermetically connected with the inner wall of the air inlet cylinder, the air outlet cylinder is provided with an air outlet cylinder inner cavity, one end of the air outlet cylinder, which is close to the guide shaft, is provided with a second air inlet, one end of the air outlet shaft is sealed and is provided with a second one-way valve, one end of the air outlet shaft is accommodated in the air outlet cylinder inner cavity and is, the second air inlet and the first one-way valve are positioned in the sealed chamber, and the driving structure drives the air inlet shaft and the air outlet shaft to synchronously reciprocate left and right.

2. The balanced-pressure air interchanger as claimed in claim 1, wherein an axial sealing groove is formed in an end surface of the air inlet cylinder facing one side of the guide shaft, a sealing ring is installed in the sealing groove, the first one-way valve penetrates through the sealing ring, and the air inlet shaft is in sealing fit with the sealing ring, so that an air inlet sealing cavity is formed between the sealing groove and the first one-way piston.

3. The balanced-pressure ventilation device according to claim 1, wherein the end of the air outlet cylinder away from the guide shaft is provided with a sealing surface which seals the end of the inner cavity of the air outlet cylinder away from the guide shaft, the second one-way valve is arranged on the sealing surface, and an air outlet sealing cavity is formed between the sealing surface and the second one-way piston.

4. The balanced pressure ventilation device according to claim 1, further comprising a fixing bracket, wherein the inlet cylinder and the outlet cylinder are disposed on the fixing bracket.

5. The balanced-pressure ventilation apparatus according to claim 4, wherein a first mounting lug having a mounting hole is provided on the outer periphery of the inlet cylinder, and a fixing member passes through the mounting hole and engages with a fixing bracket to fix the inlet cylinder to the fixing bracket.

6. The balance pressure ventilation device according to claim 4, wherein a second mounting lug having a mounting hole is provided at an outer periphery of the outlet cylinder, and a fixing member passes through the mounting hole and engages with a fixing bracket to fix the outlet cylinder to the fixing bracket.

7. The balanced pressure ventilation device as claimed in claim 4, wherein the driving structure comprises a driving gear and an eccentric gear engaged with the driving gear, a shaft fixedly connected to the bracket is disposed at a central position of a back surface of the eccentric gear, an eccentric guide post is disposed at a position deviating from the central position of a front surface of the eccentric gear, the guide post is disposed on the guide shaft, the circumferential rotation of the eccentric guide post drives the guide shaft on the hedging shaft to reciprocate left and right relative to the fixed bracket, and the eccentric guide post moves up and down relative to the guide shaft.

8. The balanced pressure air interchanger as claimed in claim 7, wherein a diameter of the eccentric gear is larger than a diameter of the driving gear.

9. The balanced pressure air interchanger as recited in claim 7, wherein the driving structure further comprises a motor, and the driving gear is connected with the motor.

10. The balanced pressure ventilation apparatus as claimed in claim 9, wherein a resilient wall of the gear is protruded from a side surface of the driving gear, the resilient wall of the gear is provided with a mounting hole and a deformation groove, and the screw is locked with the motor through the mounting hole, and the resilient wall of the gear is deformed to narrow the deformation groove during the locking process, so that the driving gear is fixed to the motor.

Technical Field

The application relates to an air interchanger, in particular to a constant pressure air interchanger.

Background

In the current field of ventilators, ventilation is usually performed at the same pressure, with some special fields, such as: the laboratory needs to maintain a constant pressure difference for balancing the pressure in the closed space of the laboratory, and exchange air with the outside to make the closed space have fresh air. In the prior art, a set of air inlet system and a set of air outlet system are adopted, and a barometer is matched for real-time monitoring. Because the air inlet and the air outlet are two systems, the monitoring data of the barometer is changed and then adjusted, and because the monitoring data is delayed, the pressure-tight closed space is difficult to ensure to be in a constant pressure loading state.

Content of application

In view of the above, the present application provides a constant pressure ventilation device, which includes an air inlet cylinder, an air outlet cylinder, a hedging shaft connected to the air inlet cylinder and the air outlet cylinder, and a driving structure for driving the hedging shaft, wherein the hedging shaft includes a guiding shaft, and an air inlet shaft and an air outlet shaft respectively disposed at two opposite sides of the guiding shaft, the air inlet cylinder has an air inlet cylinder inner cavity, one end of the air inlet cylinder far away from the guiding shaft is formed with a first air inlet communicated with the outside and one end of the air inlet cylinder near the guiding shaft is sealed and provided with a first one-way valve, one end of the air inlet shaft is accommodated in the air inlet cylinder inner cavity and provided with a first piston, the first piston is hermetically connected with an inner wall of the air inlet cylinder, the air outlet cylinder has an air outlet cylinder inner cavity, one end of the air outlet cylinder near the guiding shaft is formed with a second air inlet and one end of the air outlet shaft far away from the, the second piston is connected with the inner wall of the air outlet cylinder in a sealing mode, the air outlet cylinder further comprises a sealing chamber, the first air inlet and the second one-way valve are located outside the sealing chamber, the second air inlet and the first one-way valve are located inside the sealing chamber, and the driving structure drives the air inlet shaft and the air outlet shaft to reciprocate leftwards and rightwards synchronously.

In some embodiments, an axial sealing groove is formed in an end face of the air inlet cylinder on one side facing the guide shaft, a sealing ring is installed in the sealing groove, the first one-way valve penetrates through the sealing ring, and the air inlet shaft is in sealing fit with the sealing ring, so that an air inlet sealing cavity is formed between the sealing groove and the first one-way piston.

In some embodiments, the end of the air outlet cylinder far away from the guide shaft is provided with a sealing surface which seals the end of the inner cavity of the air outlet cylinder far away from the guide shaft, the second one-way valve is arranged on the sealing surface, and an air outlet sealing cavity is formed between the sealing surface and the second one-way piston.

In some embodiments, the air inlet cylinder and the air outlet cylinder are arranged on the fixed bracket.

Further, a first mounting lug with a mounting hole is arranged on the periphery of the air inlet cylinder, and a fixing piece passes through the mounting hole and is matched with the fixing support, so that the air inlet cylinder is fixed on the fixing support.

In some embodiments, a second mounting ear having a mounting hole is disposed at the outer periphery of the outlet cylinder, and a fixing member passes through the mounting hole and cooperates with the fixing bracket to fix the outlet cylinder to the fixing bracket.

In some embodiments, the driving structure includes a driving gear and an eccentric gear engaged with the driving gear, a shaft fixedly connected to the bracket is disposed at a central position of a back surface of the eccentric gear, an eccentric guide post is disposed at a position deviating from the central position of a front surface of the eccentric gear, the guide post is disposed on the guide shaft, circumferential rotation of the eccentric guide post drives the guide shaft on the counter shaft to reciprocate left and right relative to the fixed bracket, and the eccentric guide post moves up and down relative to the guide shaft.

Further, the diameter of the eccentric gear is larger than that of the driving gear.

In some embodiments, the drive structure further comprises a motor, and the drive gear is connected to the motor.

In some embodiments, a gear elastic wall protrudes from one side surface of the driving gear, the gear elastic wall is provided with a mounting hole and a deformation groove, the screw is locked with the motor through the mounting hole, and the gear elastic wall deforms during locking to narrow the deformation groove, so that the driving gear is fixed on the motor.

In this application, drive structure drives the synchronous reciprocating motion of the axle of admitting air and the axle of giving vent to anger of offset shaft, thereby makes first one-way piston reaches the synchronous continuous work of second one-way piston carries out lasting constant pressure and takes a breath.

Drawings

Fig. 1 is a schematic front view of a piston of a constant pressure ventilation apparatus according to an embodiment of the present application moving to the leftmost end.

Fig. 2 is a schematic front view of a piston of a constant pressure ventilation device according to an embodiment of the present application moving to the rightmost end.

Fig. 3 is a cross-sectional view of the piston of the constant pressure ventilation device of fig. 1 moving to the leftmost end.

Fig. 4 is a side view of the piston of the constant pressure ventilation device shown in fig. 1 moving to the leftmost end.

Detailed Description

The present application will be described in detail with reference to the drawings and specific embodiments, so that the technical solutions and advantages thereof will be more clearly understood. It is to be understood that the drawings are provided solely for purposes of illustration and not limitation, and that the dimensions shown in the drawings are for clarity of description and are not to be taken as limiting the scale.

Referring to fig. 1, the constant pressure ventilation valve according to an embodiment of the present application includes a fixing bracket 10, an inlet cylinder 50 and an outlet cylinder 60 disposed on the fixing bracket 10, a counter shaft 40 connected to the inlet cylinder 50 and the outlet cylinder 60, and a driving structure for driving the counter shaft 40.

Referring to fig. 2 to 4, the impact shaft 40 includes a guide shaft 41, and an air inlet shaft 42 and an air outlet shaft 43 respectively disposed at two opposite sides of the guide shaft 41. The guide shaft 41 is a longitudinal sheet, and a guide groove 412 is formed in the middle of the guide shaft along the longitudinal direction. The air inlet shaft 42 and the air outlet shaft 43 are respectively positioned in the middle of two opposite sides of the guide shaft 41. The end of the air inlet shaft 42 away from the guide shaft 41 is provided with a first one-way piston 44, and the end of the air outlet shaft 43 away from the guide shaft 41 is provided with a second one-way piston 45.

The air inlet cylinder 50 is a cylindrical hollow cavity, an air inlet cylinder inner cavity 56 is formed in the air inlet cylinder, one end of the air inlet cylinder inner cavity 56, far away from the guide shaft 41, is not closed to form a first air inlet 57, and the first air inlet 57 enables the air inlet cylinder inner cavity 56 to be communicated with the outside. An axial sealing groove 54 and a first one-way valve 53 are arranged on the end face of the air inlet cylinder 50 facing one side of the guide shaft 41, a sealing ring 55 is installed in the sealing groove 54, the first one-way piston 44 is in sealing fit with an inner cavity 56 of the air inlet cylinder, and the air inlet shaft 42 is in sealing fit with the sealing ring 55, so that an air inlet sealing cavity 52 is formed between the sealing groove 54 and the first one-way piston 44. A first mounting lug 58 having a mounting hole through which the fixing member 11 passes and engages with the fixing bracket 10 is provided at the outer periphery of the intake cylinder 50, thereby fixing the intake cylinder 50 to the fixing bracket 10.

The air outlet cylinder 60 is a cylindrical hollow cavity, an air outlet cylinder inner cavity 66 is formed in the air outlet cylinder, and one end of the air outlet cylinder adjacent to the guide shaft 41 is not closed to form a second air inlet 67. The first check valve 53 and the second inlet 67 are located in a sealed chamber 100 and are in communication with the sealed chamber 100. The end of the outlet cylinder 60 remote from the guide shaft 41 has a sealing surface 69, and the sealing surface 69 closes the end of the outlet cylinder cavity 66 remote from the guide shaft 41. A second one-way valve 63 is provided on the sealing surface 69. The second one-way piston 45 sealingly engages the outlet cylinder interior cavity 66 such that the sealing surface 69 and the second one-way piston 45 form an outlet seal cavity 62 therebetween. A second mounting lug 68 having a mounting hole is provided on the outer periphery of the outlet cylinder 60, and a fixing member 11 passes through the mounting hole and engages with the fixing bracket 10, thereby fixing the outlet cylinder 60 to the fixing bracket 10. The first air inlet 57 and the second check valve 63 are located outside the sealed chamber 100. In this embodiment, the sealed chamber 100 is a sealed laboratory.

The driving structure is used for driving the hedging shaft 40 to enable the air inlet shaft 42 and the air outlet shaft 43 to synchronously reciprocate left and right, so that the air inlet cylinder 50 and the air outlet cylinder 60 can simultaneously inlet air or discharge air. In this embodiment, the driving structure includes a motor mounting base 70, a motor 80 fixed on the motor mounting base 70, a driving gear 20 driven by the motor 80, and an eccentric gear 30 driven by the driving gear 20.

The driving gear 20 is provided at a peripheral edge thereof with driving teeth 21, and a side surface thereof is protrusively provided with a gear elastic wall 25. The gear elastic wall 25 is provided with a mounting hole 251 and a deformation groove 252. The deformation groove 252 is a rectangular groove. The screw is locked with the motor 80 through the mounting hole 251, and the gear elastic wall 25 is deformed during the locking process to narrow the deformation groove 252, so that the driving gear 20 is fixed on the motor 80.

The diameter of the eccentric gear 30 is larger than that of the driving gear 20. The periphery of the eccentric gear 30 is provided with driven teeth 31, the center position of the back surface is provided with a shaft 37, the position deviating from the center position of the front surface is provided with an eccentric guide post 33, a second bearing 35 is installed on the eccentric guide post 33, the shaft 37 of the back surface is provided with the first bearing 38, and the first bearing 38 is fixed on the shaft 37 of the eccentric gear 30 through an inner pressing ring 13 and the first bearing 38. The first bearing 38 is fixed in the mounting hole 12 of the fixed bracket 10 by the bearing outer pressing ring 14, and the eccentric guide post 33 is connected with the guide groove 412 on the guide shaft 41 by the second bearing 35.

When the motor 80 works to drive the driving gear 20 to rotate, the driving teeth 21 arranged on the driving gear 20 are matched with the driven teeth 31 on the eccentric gear 30 to drive the eccentric gear 30 to make a circular rotation motion with the center of the first bearing 38, the eccentric guide post 33 on the eccentric gear 30 also makes a circular rotation motion with the center of the first bearing 38, the circular rotation of the eccentric guide post 33 drives the guide shaft 41 on the thrust shaft 40 to make a left-right reciprocating linear motion relative to the fixed bracket 10, the eccentric guide post 33 makes an up-down motion relative to the guide shaft 41, and the second bearing 35 on the eccentric guide post 33 and the guide shaft 41 roll relatively to reduce friction.

When the eccentric guide post 33 on the eccentric gear 30 rotates to the rightmost end, the hedging shaft 40 moves to the maximum position rightwards, the air inlet shaft 42 and the air outlet shaft 43 on the hedging shaft 40 are both driven to move to the rightmost end at the same time, at this time, the first one-way piston 44 and the second one-way piston 45 move to the rightmost end at the same time, and the first one-way piston 44 and the second one-way piston 45 have the same movement stroke, the air inlet sealing cavity 52 on the right air inlet cylinder 50 forms negative pressure, the first one-way piston 44 is pushed open by the atmospheric pressure, the outside air enters the air inlet seal cavity 52 from the air inlet 57 on the air inlet cylinder 50, meanwhile, the air outlet sealed cavity 62 on the air outlet cylinder 60 on the left side also forms negative pressure, the second one-way piston 45 is pushed open by atmospheric pressure, and air in the sealed chamber 90 enters the air outlet sealed cavity 62 from the air inlet 67 of the air outlet cylinder 60.

When the eccentric guide post 33 rotates to the leftmost end, the hedging shaft 40 moves leftwards to the maximum position, the first one-way piston 44 and the second one-way piston 45 on the hedging shaft 40 are driven to move leftwards to the leftmost end at the same time, and the first one-way piston 44 and the second one-way piston 45 have the same movement stroke, the air inlet sealing cavity 52 of the right air inlet cylinder 50 forms high pressure to push open the first one-way valve 53 on the air inlet cylinder 50, so that high-pressure outside air in the air inlet sealing cavity 52 enters the sealed chamber 90, and the air outlet sealing cavity 62 of the left air outlet cylinder 60 also forms high pressure to push open the second one-way valve 63 on the air outlet cylinder 60 to discharge air in the sealed chamber 90.

In this application, because of it is same to admit air axle 42 and the axle 43 of giving vent to anger be located on the counterpulsation axle 40, the motion is synchronous and the stroke always, results in being connected with it first one-way piston 44 reaches second one-way piston 45 motion stroke unanimity, through admit air section of thick bamboo inner chamber 56 with go out the different constant differential pressure that obtain of the different size proportion of section of thick bamboo inner chamber 66 diameter, keep air exchange in-process closed chamber 90 and external differential pressure unchangeable, so, can ensure to be in the balanced pressure attitude in real time among the air exchange process closed chamber 90, reach the purpose of balanced atmospheric pressure.

In this application, through the continuous work of motor 80, the continuous rotation of eccentric guide pillar 33 drives it is continuous left and right reciprocating linear motion to do towards axle 40, thereby makes first one-way piston 44 and second one-way piston 45 continuous work, carries out continuous constant pressure and takes a breath.

The above description is only a preferred embodiment of the present application, and the protection scope of the present application is not limited to the above-listed embodiments, and any simple changes or equivalent substitutions of the technical solutions that can be obviously obtained by those skilled in the art within the technical scope of the present disclosure fall within the protection scope of the present application.