CN210686481U - Air conditioning valve set for engineering vehicle - Google Patents
Air conditioning valve set for engineering vehicle Download PDFInfo
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- CN210686481U CN210686481U CN201921387715.1U CN201921387715U CN210686481U CN 210686481 U CN210686481 U CN 210686481U CN 201921387715 U CN201921387715 U CN 201921387715U CN 210686481 U CN210686481 U CN 210686481U
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Abstract
The utility model provides an air conditioning valve group for engineering truck relates to air conditioner technical field for engineering truck. Air conditioning valve group for machineshop car includes: the valve body is provided with an oil inlet, an oil return port and an air conditioner motor oil inlet; the throttle valve is arranged on the valve body and communicated with the oil inlet, and a spring cavity is arranged in the throttle valve; the on-off valve is arranged on the valve body, one end of the on-off valve is connected with the spring cavity of the throttling valve core in series, and the other end of the on-off valve is connected with the oil return port; the one-way valve is arranged on the valve body, one end of the one-way valve is communicated with the oil inlet, and the other end of the one-way valve is communicated with the oil inlet of the air-conditioning motor; and the overflow valve is arranged on the valve body, one end of the overflow valve is communicated with the oil return port, and the other end of the overflow valve is communicated with an oil inlet of the air conditioner motor. When the air conditioner is started, because the throttle valve and the on-off valve are arranged, the oil liquid is buffered, so that the instant impact force generated by overhigh oil pressure can not be generated when the air conditioner is started, and the air conditioner is stably started.
Description
Technical Field
The utility model belongs to the technical field of the air conditioner for the machineshop car, a air conditioning valves for the machineshop car is related to.
Background
In the air conditioner on the engineering truck, a compressor of the air conditioner is mostly driven by a hydraulic motor, and a hydraulic source of the hydraulic motor adopts a hydraulic system of an engineering machinery main machine. In the prior art, an air conditioning valve group for communicating a hydraulic source and a hydraulic motor adopts a two-way cartridge valve. The two-way cartridge valve has the problems that the impact force at the moment of opening is too large, the stable starting and closing of an air conditioner are not facilitated, and the damage to an air conditioning system is easily caused.
Disclosure of Invention
The utility model aims at having the above-mentioned problem to current technique, provided an impact force is little, can the steady start air conditioner valves for machineshop car of air conditioner.
The purpose of the utility model can be realized by the following technical proposal: an air conditioning valve group for engineering vehicles comprises:
the valve body is provided with an oil inlet, an oil return port and an air conditioner motor oil inlet;
the throttle valve is arranged on the valve body and communicated with the oil inlet, and a spring cavity is arranged in the throttle valve;
the on-off valve is arranged on the valve body, one end of the on-off valve is connected with the throttle valve spring cavity in series, and the other end of the on-off valve is connected with the oil return port;
the one-way valve is arranged on the valve body, one end of the one-way valve is communicated with the oil inlet, and the other end of the one-way valve is communicated with the oil inlet of the air-conditioning motor;
and the overflow valve is arranged on the valve body, one end of the overflow valve is communicated with the oil return port, and the other end of the overflow valve is communicated with an oil inlet of the air conditioner motor.
As a further improvement of the utility model, the on-off valve is a two-position two-way electromagnetic valve; the on-off valve has two working states: when the on-off valve is electrified, the on-off valve is disconnected, and the oil inlet, the one-way valve and the oil way of the oil inlet of the air-conditioning motor are communicated; when the on-off valve is powered off, the on-off valve is communicated, and the oil inlet, the throttle valve, the on-off valve and the oil return port are communicated.
As a further improvement of the utility model, the throttle valve comprises a throttle valve core, a valve cover, a valve seat and a valve cover, the valve cover is arranged at one end far away from the oil inlet, the valve body is hermetically connected with the valve cover, the throttle valve core is inserted in the valve body and the valve cover, the valve cover is sleeved between the throttle valve core and the valve body, the valve seat is sleeved at one end close to the oil inlet between the throttle valve core and the valve body, and the valve seat is abutted against the valve; the throttling valve core is provided with a throttling groove at one end close to the oil inlet, the valve seat is in line contact with the throttling groove, the valve sleeve is provided with a plurality of through holes vertical to the axial direction of the throttling valve core, and oil passing through the throttling groove flows to return oil through the through holes.
As a further improvement of the utility model, a spring cavity is arranged inside the throttle valve core; one end of the throttling valve core, which is close to the oil inlet, is provided with a through pilot groove which is coaxial with the throttling valve core; the end, close to the pilot groove, of the spring cavity is provided with a damping filter, the end, close to the valve cover, of the spring cavity is provided with a damping, a spring is installed in the spring cavity, and the spring cavity is communicated with the on-off valve.
As a further improvement of the utility model, the ratio of the effective stress area of the throttle valve core near one end of the valve cover to the effective stress area near one end of the oil inlet is 1.0-1.1, the effective stress area of the throttle valve core near one end of the valve cover is the sectional area of the throttle valve core near one end of the valve cover and the contact position of the valve cover, and the effective stress area of the throttle valve core near one end of the oil inlet is the sectional area of the throttle groove and the contact position of the valve seat.
As a further improvement, the valve sleeve is provided with a circumferential deep groove.
As a further improvement, the overflow valve is connected with the pressure measuring port at the connecting position of the air-conditioning motor oil inlet.
As a further improvement, the sealing ring is respectively embedded in the position where the valve seat, the valve sleeve and the valve cover are connected with the valve body, so that the valve seat, the valve sleeve and the valve cover are connected in a sealing manner.
Based on the technical scheme, the embodiment of the utility model provides a can produce following technological effect at least: the utility model discloses creative has set up choke valve and on-off valve between oil inlet and oil return opening, when the air conditioner starts, because the setting of choke valve and on-off valve makes fluid cushion to some extent, can not produce impact force in the twinkling of an eye because of the oil pressure is too high when consequently the air conditioner is opened, its structure is different from two-way cartridge valve among the prior art completely, and the utility model discloses set up the overflow valve between air conditioner motor oil inlet and oil return opening, further injecing air conditioner motor oil inlet pressure, avoid air conditioner motor oil inlet pressure too big, the impact force in the twinkling of an eye that produces when this air conditioner valves for machineshop car can effectively reduce the air conditioner and open makes the air conditioner steadily start.
Drawings
The following detailed description of embodiments of the invention is provided with reference to the accompanying drawings, in which:
fig. 1 is the hydraulic schematic diagram of the air conditioning valve set for the engineering truck.
Fig. 2 is a partial sectional view of an air conditioning valve block for a construction vehicle.
In the figure, 100, valve body; 200. a throttle valve; 210. a throttle valve cartridge; 211. a throttling groove; 212. deep trenches; 213. a through hole; 214. a seal ring; 215. a spring cavity; 216. a spring; 217. a damping filter; 218. damping; 219. firstly, guiding a groove; 220. a valve housing; 230. a valve seat; 240. a valve cover; 300. an on-off valve; 400. a one-way valve; 500. an overflow valve.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
The technical solution provided by the present invention is explained in more detail with reference to fig. 1 to 2.
An air conditioning valve set for engineering vehicle, as shown in fig. 1, comprises: valve body 100, throttle valve 200, on-off valve 300, check valve 400, overflow valve 500.
The air conditioner comprises a valve body 100, wherein an oil inlet P, an oil return port B and an air conditioner motor oil inlet A are formed in the valve body 100; the throttle valve 200 is arranged on the valve body 100 and communicated with the oil inlet P, and a spring cavity 215 is arranged in the throttle valve 200; the on-off valve 300 is arranged on the valve body 100, one end of the on-off valve 300 is connected with the throttle valve spring cavity 215 in series, and the other end of the on-off valve 300 is connected with the oil return port B; the check valve 400 is arranged on the valve body 100, one end of the check valve 400 is communicated with the oil inlet P, and the other end of the check valve 400 is communicated with the oil inlet A of the air-conditioning motor; and the overflow valve 500 is arranged on the valve body 100, one end of the overflow valve 500 is communicated with the oil return port B, and the other end of the overflow valve is communicated with the oil inlet A of the air conditioner motor.
The oil inlet P is communicated with a hydraulic oil source, the oil inlet A of the air conditioner motor is communicated with the hydraulic motor, and the oil return port B is communicated with an oil tank.
Further, the on-off valve 300 is a two-position two-way electromagnetic valve; the on-off valve 300 has two operating states: when the on-off valve 300 is powered on, the on-off valve 300 is disconnected, the oil inlet P, the check valve 400 and the oil path of the oil inlet A of the air conditioner motor are communicated, oil flows to the oil inlet A of the air conditioner motor from the oil inlet P through the check valve 400, the hydraulic motor is started, the air conditioner is started, meanwhile, the oil return in the spring cavity 215 is disconnected, the throttle valve is slowly closed, the oil is buffered, and the instant impact force generated when the air conditioner is started is avoided. When the on-off valve 300 is powered off, the on-off valve 300 is communicated, the oil passages of the oil inlet P, the throttling valve 200, the on-off valve 300 and the oil return opening B are communicated, oil flows to the oil return opening B from the oil inlet P sequentially through the throttling valve 200, and the air conditioner is closed at the moment.
Further, the oil pressure of an oil inlet A of an air conditioner motor is guaranteed by the arrangement of the overflow valve 500, and when the oil pressure of the oil inlet A of the air conditioner motor exceeds a set pressure, the overflow valve 500 is opened, unloaded and overflows, so that the phenomenon that the oil pressure of the oil inlet A of the air conditioner motor is too large to influence the normal operation of an air conditioner is avoided.
Further, as shown in fig. 2, the throttle valve 200 includes a throttle valve core 210, a valve cover 220, a valve seat 230, and a valve cover 240, the valve cover 240 is disposed at an end far from the oil inlet P, the valve body 100 is hermetically connected with the valve cover 240, the throttle valve core 210 is inserted into the valve body 100 and the valve cover 240, the valve cover 220 is sleeved between the throttle valve core 210 and the valve body 100 and near one end of the valve cover 240, the valve seat 230 is sleeved between the throttle valve core 210 and the valve body 100 and near one end of the oil inlet P, and the valve seat 230; one end of the throttle valve core 210 close to the oil inlet P is provided with a throttle groove 211, the valve seat 230 is in line contact with the throttle groove 211, the valve sleeve 220 is provided with a plurality of through holes 213 vertical to the axial direction of the throttle valve core 210, and oil passing through the throttle groove 211 flows to the port B through the through holes 213.
The throttle groove 211 is arranged to realize the function of variable through-flow area, so that the throttle valve 200 can be slowly opened, oil flows stably through the throttle groove 211, and the throttle groove 211 is slowly opened from small to large, thereby avoiding the problem of overlarge instantaneous impact force.
Further, the positions where the valve seat 230, the valve sleeve 220, and the valve cover 240 are connected to the valve body 100 are respectively embedded with a sealing ring 214, so that the valve seat 230, the valve sleeve 220, and the valve cover 240 are hermetically connected to the valve body 100.
Furthermore, a circumferential deep groove 212 is formed in the outer side of the valve sleeve 220, and the arrangement of the deep groove 212 enables the valve sleeve 220 not to block an oil flow channel even if the valve sleeve rotates, and a fastening and positioning screw for fixing on the valve body 100 is omitted, so that the risk of oil leakage outside is reduced.
Further, a spring chamber 215 is arranged inside the throttle valve core 210; one end of the throttle valve core 210 close to the oil inlet P is provided with a through pilot groove 219 coaxial with the throttle valve core 210; a damping filter 217 is arranged at one end, close to the first guide groove 219, of the spring cavity 215, a damping filter 217 is arranged at one end, close to the valve cover 240, of the spring cavity 215, a spring 216 is installed in the spring cavity 215, and the spring cavity 215 is communicated with the oil return port B. Oil from an oil inlet P enters the spring cavity 215 through the guide groove 219 and the damping filter 217, and the oil in the spring cavity 215 flows out from an oil return port B through the on-off valve 300; when the oil pressure of the oil from the oil inlet P continues to increase, the oil pushes the throttle valve core 200 to move towards the direction close to the valve cover 240, the throttle valve core 200 is opened, and the oil flows to the oil return port B through the throttle groove 211 and the through hole 213. The arrangement of the damping filter 217 and the damping 218 enables the entering oil to be filtered firstly, reduces the risk that the damping 218 is blocked, improves the pollution resistance and the service life of the throttle valve 200, and further plays a role in stabilizing and filtering, and improves the flow stability of the oil.
Further, the ratio of the effective stressed area of the throttle valve core 200 at the end close to the valve cover 240 to the effective stressed area at the end close to the oil inlet P is 1.0-1.1. Specifically, the effective stressed area of the throttle valve core 200 near the end of the valve cover 240 is the sectional area of the contact position of the throttle valve core 200 near the end of the valve cover 240 and the valve sleeve 220, the effective stressed area of the throttle valve core 200 near the end of the oil inlet P is the sectional area of the contact position of the throttle groove 211 and the valve seat 230, and preferably, the ratio of the effective stressed area of the throttle valve core 200 near the end of the valve cover 240 to the effective stressed area near the end of the oil inlet P is 1.005-1.010.
When the air conditioner is started, namely the on-off valve 300 is powered on and closed, the oil return of the spring cavity 215 of the throttle valve core is cut off, at the moment, the throttle valve core 200 is closed, because the ratio of the effective stress area of the throttle valve core 200 close to one end of the valve cover 240 to the effective stress area of one end close to the oil inlet P is 1.005-1.010, and an area difference exists between the two, the throttle valve core 200 is closed stably,
furthermore, the overflow valve 500 is connected with a pressure measuring port M at the connection position of the air conditioner motor oil inlet A, and the pressure measuring device is connected at the pressure measuring port M, so that the pressure from the oil inlet P to the oil path of the air conditioner motor oil inlet A can be conveniently known.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (8)
1. The utility model provides an air conditioner valves for machineshop car which characterized in that includes:
the valve body is provided with an oil inlet, an oil return port and an air conditioner motor oil inlet;
the throttle valve is arranged on the valve body and communicated with the oil inlet, and a spring cavity is arranged in the throttle valve;
the on-off valve is arranged on the valve body, one end of the on-off valve is connected with the spring cavity of the throttling valve core in series, and the other end of the on-off valve is connected with the oil return port;
the one-way valve is arranged on the valve body, one end of the one-way valve is communicated with the oil inlet, and the other end of the one-way valve is communicated with the oil inlet of the air-conditioning motor;
and the overflow valve is arranged on the valve body, one end of the overflow valve is communicated with the oil return port, and the other end of the overflow valve is communicated with an oil inlet of the air conditioner motor.
2. The valve bank of air conditioners for engineering vehicles as claimed in claim 1, wherein the on-off valve is a two-position two-way solenoid valve; the on-off valve has two working states: when the on-off valve is electrified, the on-off valve is disconnected, and the oil inlet, the one-way valve and the oil way of the oil inlet of the air-conditioning motor are communicated; when the on-off valve is powered off, the on-off valve is communicated, and the oil inlet, the throttle valve, the on-off valve and the oil return port are communicated.
3. The air conditioning valve bank for the engineering vehicle as claimed in claim 1, wherein the throttle valve comprises a throttle valve core, a valve sleeve, a valve seat and a valve cover, the valve cover is arranged at one end far away from the oil inlet, the valve body is hermetically connected with the valve cover, the throttle valve is inserted into the valve body and the valve cover, the valve sleeve is sleeved between the throttle valve core and the valve body, the valve seat is sleeved between the throttle valve core and the valve body and is close to one end of the oil inlet, and the valve seat is abutted to; the throttling valve core is provided with a throttling groove at one end close to the oil inlet, the valve seat is in line contact with the throttling groove, the valve sleeve is provided with a plurality of through holes perpendicular to the axial direction of the throttling valve core, and oil passing through the throttling groove flows to the oil return port through the through holes.
4. The valve bank of air conditioners for engineering vehicles as claimed in claim 3, wherein a spring cavity is provided inside the throttle valve core; one end of the throttling valve core, which is close to the oil inlet, is provided with a through pilot groove which is coaxial with the throttling valve core; the end, close to the pilot groove, of the spring cavity is provided with a damping filter, the end, close to the valve cover, of the spring cavity is provided with a damping, a spring is installed in the spring cavity, and the spring cavity is communicated with the on-off valve.
5. The valve set of claim 4, wherein the ratio of the effective stressed area of the throttle valve core near the valve cover to the effective stressed area near the oil inlet is 1.0-1.1, the effective stressed area of the throttle valve core near the valve cover is the cross-sectional area of the valve cover near the contact position of the throttle valve core and the valve sleeve, and the effective stressed area of the throttle valve core near the oil inlet is the cross-sectional area of the valve seat near the contact position of the throttle groove and the valve seat.
6. The valve bank of air conditioners for engineering vehicles as claimed in claim 3, wherein the outer side of the valve sleeve is provided with a circumferential deep groove.
7. The air conditioning valve bank for the engineering truck as claimed in claim 1, wherein the overflow valve is connected with a pressure measuring port at a position where the overflow valve is connected with an oil inlet of an air conditioning motor.
8. The valve set of air conditioners for engineering vehicles as claimed in claim 3, wherein the valve seat, the valve sleeve and the valve cover are respectively embedded with a sealing ring at the connecting position with the valve body, so that the valve seat, the valve sleeve and the valve cover are hermetically connected with the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921387715.1U CN210686481U (en) | 2019-08-23 | 2019-08-23 | Air conditioning valve set for engineering vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921387715.1U CN210686481U (en) | 2019-08-23 | 2019-08-23 | Air conditioning valve set for engineering vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210686481U true CN210686481U (en) | 2020-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921387715.1U Active CN210686481U (en) | 2019-08-23 | 2019-08-23 | Air conditioning valve set for engineering vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210686481U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483498A (en) * | 2020-11-30 | 2021-03-12 | 杭州精工液压机电制造有限公司 | Engineering machinery air conditioner control valve with proportional throttle valve and control method |
-
2019
- 2019-08-23 CN CN201921387715.1U patent/CN210686481U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483498A (en) * | 2020-11-30 | 2021-03-12 | 杭州精工液压机电制造有限公司 | Engineering machinery air conditioner control valve with proportional throttle valve and control method |
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Address after: No.98 xingyong Road, Jiangbei District, Ningbo City, Zhejiang Province Patentee after: Ningbo Yuzhou Hydraulic Equipment Co.,Ltd. Address before: No.98 xingyong Road, Jiangbei District, Ningbo City, Zhejiang Province Patentee before: NINGBO JIANGBEI YUZHOU HYDRAULIC EQUIPMENT FACTORY |