SU720188A2 - Relief device - Google Patents

Description

The invention relates to the field of compressor engineering, namely to unloading devices for membrane compressors.

Known unloading device containing a housing with an inlet and outlet 5 holes and a locking body with a travel stop, placed in a piston mounted for movement in the housing, at the inlet of which is a check valve, and equipped with a spring [1].

The disadvantage of such a discharge device is the need for manual regulation of the position of the stop stroke limiter and, therefore, the duration of the compressor’s ⁵ operating time.

It is also known a discharge device comprising a housing with an inlet and ²⁰ outlet openings and a locking member with a travel stop located in a piston mounted for displacement in the housing, which has a check valve at its inlet and provided with a spring, while the locking member is pushed through. Return spring bushing ΙΦΙ

The disadvantage of this unloading device is the need for manual adjustment of the position of the stroke limiter and the relatively long time the compressor enters the operating mode.

The purpose of the invention is the provision of automatic control of the compressor • • spring, which allows to reduce the time it takes to operate.

This is achieved by the fact that a throttle is installed in the sleeve cavity, and its side surface has radial openings blocked by a travel stop when moving the sleeve away from the piston, and also by the fact that the housing outlet is made on its side surface.

720.1

The drawing shows a discharge device in section.

The unloading device comprises a housing 1 with an inlet 2 and an outlet 3 openings and a locking member 4 with an og'ra-- 5 stroke 5 nickel, located in a piston 6 mounted for movement in the housing 1, on the inlet 2 of which a check valve 7 is located, and equipped with a spring 8. ¹⁰ Za- pORN body 4 is urged through the sleeve 9 the return spring 10. The sleeve 9 choke cavity 11 is set, and its lateral surface 12 has radial holes 13, ¹⁵ overlapping limiters Lemma 5 stroke when moving towards the sleeve 9 from piston 6. At the same time, The second hole 3 of the housing 1 is made on its side surface.

The unloading device operates as follows.

In the compressor discharge mode, under the influence of the hydraulic fluid, the check valve 7 opens, the fluid flows through the inlet 2 into the cavity of the housing 1. At the same time, the piston 6 moves towards the stroke limiter 5, and the shut-off member 4 also moves and compresses the spring under the influence of the fluid pressure. 8, which moves the sleeve 9 away from the piston 6, When moving the sleeve 9, the liquid from its cavity is displaced through the throttle 11 and the radial holes 13, and the excess liquid is discharged from the cavity of the housing 1 through the outlet e hole 3 located on its side surface.

When the radial openings 13 are blocked, the movement of the sleeve 9 is slowed down, since the fluid from its cavity does not have time to flow out through the throttle 11. The piston 6 with the locking member 4 moves all the way, compressing the spring 8. The liquid from the over-piston space is discharged through the locking member 4 under high pressure, as a result, the compressor operates with increased gas pressure in the discharge line.

4

In the suction mode, the fluid pressure from the hydraulic actuator side drops, as a result of which the shut-off element 4. Returns to its original position by the action of the spring 8, moving the piston 6, the check valve 7 closes, and the sleeve 9 under the pressure of the spring 10 changes. sits towards the piston 6.

The time of forced operation of the compressor, corresponding to the time of reaching the operating mode, is determined by the diameter of the passage section of the inductor 11, which performs the function of a time relay. After turning off the compressor, the piston 6 and the sleeve 9 by the force of the spring 10 are moved to its original position.

Due to the fact that a throttle is installed in the sleeve cavity, and its side surface has radial openings blocked by a travel stop when moving the sleeve from the piston, as well as the case that the housing outlet is made on its side surface, the compressor is controlled automatically, which reduces compressor operating time and reduce power consumption.

Claims (2)

The invention relates to the field of compression engineering, namely to discharge devices for membrane compressors. A discharging device is known that includes a housing with inlet and outlet openings and a locking member with a travel stop placed in a piston mounted for movement in the housing with a check valve located at its inlet and equipped with a spring 1. The disadvantage of such an unloading device is the necessity of manually adjusting the position of the limiter of the locking member VL, therefore, the duration of the time the compressor reaches the operating mode. It is also known to have a discharge device comprising a housing with inlet and outlet openings and a stop valve with a travel stop, placed in a piston mounted for movement in the housing, on the inlet of which a counter valve is located and fitted with a spring; return spring bushing 23. A disadvantage of this discharge device is also the need for manual adjustment of the position of the travel stop and the relatively long exit time of the compressor for Work mode. The purpose of the invention is to provide automatic control of the operation of the compressor, which makes it possible to reduce the time it takes to operate. This is achieved by the fact that a throttle is installed in the cavity of the sleeve, and its lateral surface has radial holes blocked by a stroke limiter when the sleeve is moved away from the piston, as well as the removal of the hole. The version of the body is made on its side surface. 37 The drawing shows the unloading device in section. The unloading device includes a housing 1 with an inlet M 2 and an outlet 3 orifices and a locking member 4 with an actuator for the stroke 5, located in the piston 6j installed with the possibility of marking in the housing 1, at the inlet opening 2 of which a check valve 7 is located, and equipped with spring 8. For the porous body 4 is pressed through the sleeve 9 by the return spring 10. In the cavity of sleeve 9, a throttle 11 is installed, and its side 12 has radial ands of 13, which are blocked by stroke 5 when moving sleeve 9 away from the piston 6 , With this advantageous response stie 3 of the housing 1 formed at its side surface. The unloading device operates as follows, In the compressor discharge mode, the valve 7 is closed by the action of the hydraulic drive fluid, the return valve 7 is closed, and the fluid flows through the inlet 2 into the cavity of the housing 1. At the same time, the piston 6 moves towards the stroke limiter 5, and the piston The organ 4 under the influence of the bottom of the fluid also moves with and compresses the spring 8, which displaces the sleeve 9 away from the piston 6. When the sleeve 9 moves, the liquid from its cavity is forced through the throttle 11 and the radial holes 13, and liquid These are discharged from the housing 1 through an outlet 3, located on its side surface. When the radial holes 13 overlap, the movement in the pulley 9 slows down, as the fluid from its cavity;: does not have time to flow through the throttle 11. The pore 6 with the locking member 4 moves as far as it will go, compressing the spring 8 "Bone from the piston the space is discharged through the shut-off element 4 under the pressure of the pressure, as a result of which the compressor operates with an increased gas pressure in the discharge line 84 In the suction mode, the liquid from the hydraulic drive drops, as a result of which the shut-off element 4 returns under the action of the spring 8 with a uo Khodnev popozhenie, moving the piston 6, check valve 7 closes and vtulit 9 Single pressure spring 10 changes. slings towards the piston 6. The forced compressor operation time, corresponding to the operating time, is determined by the diameter of the throttle 11, which performs the function of a time relay. After the compressor is turned off, the piston 6 and the sleeve 9 by the force of the spring 10 move to the initial position. E that the throttle is installed in the cavity of the sleeve, and its side surface has radial holes blocked by the stroke limiter when the sleeve moves from the piston, and that the outlet of the housing is on its side surface, the compressor is controlled automatically, which allows to reduce the time for the compressor to reach the operating mode and reduce the power consumption. Claim 1, Discharge device for a membrane compressor according to ed. St. L 386149, characterized in that, in order to automatically regulate the operation of the compressor, the choke is in the cavity of the yCTaHOBvfieH bushing, and its side surface has radial holes blocked by an ogre; hh-stroke actuator when the bushing moves away from the piston. 2, The device according to claim 1, so that the output opening of the body is made on its side surface. Sources of information taken into account during the examination 1, USSR Author's Certificate No. 335435, 1СЛ. F 04 B 45/04, 1970. 2..The USSR author's certificate number 386149, cl., F04 In 45/04, 1971. 7 5 3 // fo 12 5 2 It