CN216843243U

CN216843243U - Adjustable mixed flow type temperature control valve for oil injection screw compressor

Info

Publication number: CN216843243U
Application number: CN202122705307.XU
Authority: CN
Inventors: 李骣; 夏业涛; 许孟龙; 缪鹏; 胡庆玉; 夏仲雷
Original assignee: Ma'anshan Sailiwen Machinery Co ltd
Current assignee: Ma'anshan Sailiwen Machinery Co ltd
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2022-06-28
Anticipated expiration: 2031-11-05

Abstract

The utility model discloses an adjustable mixed flow type temperature control valve for an oil injection screw compressor, and belongs to the technical field of oil-water separation. The utility model comprises a valve body, wherein a hot oil inlet and a cold oil inlet are respectively arranged on two sides of the top of the valve body, a mixed flow outlet is arranged at the bottom of the valve body, a throttle plunger extending horizontally is arranged on one side of the valve body, the end part of the throttle plunger extends into the hot oil inlet, a valve core extending along the length direction is arranged in the valve body, an adjusting spring is arranged on one side of the valve core, a temperature control element is arranged on the other side of the valve core, and a mixed flow barrel is arranged between the adjusting spring and the temperature control element. In order to solve the problems in the prior art, the utility model provides an adjustable mixed-flow temperature control valve for an oil injection screw compressor, which can effectively solve the problem that a temperature control element of the mixed-flow temperature control valve is easy to lose efficacy when a cold machine is started, has a simple structure and is convenient and fast to operate, the service life of the temperature control element is prolonged, and the normal operation of a unit is guaranteed.

Description

Adjustable mixed flow type temperature control valve for oil injection screw compressor

Technical Field

The utility model belongs to the technical field of mixed-flow temperature control valves, and particularly relates to an adjustable mixed-flow temperature control valve for an oil injection screw compressor.

Background

At present, a split-flow type temperature control valve is commonly used in an oil injection screw compressor, lubricating oil is split from an oil separation barrel through the temperature control valve according to the temperature, all or part of the lubricating oil enters a cooler at high temperature, the lubricating oil directly circulates at low temperature, and then the lubricating oil enters a main machine after being filtered by the oil. When the machine is started in a cold state, the problem that the temperature of the machine set is rapidly increased due to untimely action of the temperature control element is easy to occur. And meanwhile, if the temperature control element works in a high-temperature area, the temperature control element is easy to lose efficacy. The existing mixed-flow temperature control valve has the defects that: a. the structure is complex; b. the single-side influx temperature is uncontrollable; c. and has no flow regulation function. Therefore, a mixed-flow temperature control valve for an oil injection screw compressor capable of adjusting the flow is urgently needed to be designed.

Through retrieval, the structure of the mixed-flow temperature control valve has been disclosed in patents, such as Chinese patent application number: 2019219124061, creation name of utility model: a mixed flow type temperature control valve for an oil injection screw air compressor comprises a valve body, wherein a hot oil outlet is formed in one side of the valve body, a cold oil inlet and a temperature control valve outlet are formed in the other side of the valve body, a valve core is arranged in the valve body, a spring is arranged at the upper end of the valve core, a temperature control element is arranged at the lower end of the valve core, a mixing area is formed between the spring and the temperature control element, and a clamp spring is arranged at the lower end of the valve body through a valve cover hole. This scheme provides a long service life, and control is more accurate, simple structure compactness, reasonable in design and manufacturing cost reduce's temperature-sensing valve.

Also as in the chinese patent application No.: 2006100351959, name of creation: an electrothermal region control valve is composed of valve body, valve rod, thermal resistor, thermosensitive element, spring, external cover, connector, reverse valve body, dual-surface sealing ring, sealing ring and temp controller module. The switching-over valve body is installed in the valve body, corresponds on switching-over valve body and the valve body and has seted up fluid inlet and fluid outlet, and the connector is installed to the switching-over valve body lower extreme, and the connector is installed to the upper end, and the dustcoat is installed to the upper end of connector. Thermal resistor, thermosensitive element, valve rod and spring are installed in the inner cavity defined by outer cover, connector and reversing valve body together, double-sided sealing ring is installed on the valve rod, the double-sided sealing ring is located between the upper end face of the reversing valve body and the upper end face of the connector, and the temperature controller assembly is located outside the electric heating area control valve and electrically connected with the thermal resistor. The scheme can automatically control the flow of the area, thereby achieving the purpose of automatically adjusting the temperature of the area.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

In order to solve the problems in the prior art, the utility model provides an adjustable mixed-flow temperature control valve for an oil injection screw compressor, which can effectively solve the problem that a temperature control element of the mixed-flow temperature control valve is easy to lose efficacy when a cold machine is started, has a simple structure and is convenient and fast to operate, the service life of the temperature control element is prolonged, and the normal operation of a unit is guaranteed.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

The utility model discloses an adjustable mixed flow type temperature control valve for an oil injection screw compressor, which comprises a valve body, wherein a hot oil inlet and a cold oil inlet are respectively arranged on two sides of the top of the valve body, a mixed flow outlet is arranged at the bottom of the valve body, a horizontally extending throttling plunger is arranged on one side of the valve body, the end part of the throttling plunger extends into the hot oil inlet, a valve core extending along the length direction is arranged in the valve body, an adjusting spring is arranged on one side of the valve core, a temperature control element is arranged on the other side of the valve core, and a mixed flow barrel is arranged between the adjusting spring and the temperature control element.

As a further improvement of the utility model, one end of the adjusting spring is fixed on the fixing column of the valve core, the other end of the adjusting spring extends into the mixed flow barrel, and a flow distribution plate connected with the adjusting spring is welded in the mixed flow barrel.

As a further improvement of the utility model, the periphery of the mixed flow barrel is provided with a hot oil through hole and a cold oil through hole at the positions corresponding to the hot oil inlet and the cold oil inlet respectively, and the hot oil through hole and the cold oil through hole are communicated with the inside of the mixed flow barrel.

As a further improvement of the utility model, the hot oil through holes and the cold oil through holes are both multiple and are uniformly distributed on the periphery of the mixed flow barrel.

As a further improvement of the utility model, a first O-shaped sealing ring, a second O-shaped sealing ring and a third O-shaped sealing ring are sequentially arranged between the inner cavity of the valve body and the outer wall of the valve core along the length direction.

As a further improvement of the utility model, the end of the temperature control element on the side remote from the adjusting spring is inserted into an end cap, and the end cap is fixed on the valve body through a circlip.

As a further improvement of the utility model, an O-shaped sealing ring IV is arranged on the inner cavity of the valve body and the periphery of the end cover.

As a further improvement of the utility model, the throttling plunger is locked and fixed on the valve body through a locking nut.

As a further improvement of the utility model, the outlet of the oil separating barrel and the outlet of the oil cooler are respectively provided with a hot oil inlet pipe and a cold oil inlet pipe, and the hot oil inlet pipe and the cold oil inlet pipe are respectively connected with the hot oil inlet and the cold oil inlet.

3. Advantageous effects

Compared with the prior art, the utility model has the beneficial effects that:

(1) the adjustable mixed-flow temperature control valve for the oil injection screw compressor can effectively solve the problem that a temperature control element is easy to lose efficacy when a screw machine cold machine is started, is simple in structure and convenient and fast to operate, prolongs the service life of the temperature control element, and ensures the normal operation of a unit.

(2) According to the adjustable mixed-flow temperature control valve for the oil injection screw compressor, the throttle plunger extending horizontally is arranged on one side of the valve body, the end part of the throttle plunger extends into the hot oil inlet, the flow of hot oil medium entering the valve body from the hot oil inlet can be effectively adjusted through the extension length of the throttle plunger, and then the pressure loss of pipelines of the hot oil inlet and the cold oil inlet of the mixed-flow temperature control valve is adjusted to tend to balance, so that the unit is effectively ensured to be started, and when a temperature control element does not act in time, the medium entering the main machine of the oil injection screw compressor can not be short-flowed by the hot oil medium from the hot oil inlet, so that the problem of instantaneous temperature rise when a cold machine is started is thoroughly avoided, and the normal operation of the unit is ensured.

(3) When the adjustable mixed-flow temperature control valve for the oil-injection screw compressor works, when the temperature of a mixed-flow medium is too high, a temperature sensing material in the temperature control element expands and compresses a spring in the temperature control element leftwards, so that a valve rod on the temperature control element is driven to move leftwards, the valve rod pushes a mixed-flow barrel to move leftwards and extrude an adjusting spring leftwards, and a hot oil through hole in the mixed-flow barrel is staggered with a hot oil inlet to a certain extent, so that the inlet of the hot oil medium entering the mixed-flow barrel is reduced, and the mixed-flow temperature is reduced to reach a set value. On the contrary, when the temperature of the mixed flow medium is too low, the temperature sensing material shrinks, the spring in the hot oil inlet resets, so that the valve rod on the temperature control element is driven to move rightwards, the mixed flow barrel is pulled by the valve rod to move rightwards, the cold oil through hole on the mixed flow barrel and the cold oil inlet are staggered to a certain degree, the inlet of the cold oil medium entering the mixed flow barrel becomes small, the hot oil through hole is completely communicated with the hot oil inlet, the cold oil medium inlet of the mixed flow barrel becomes small, the hot oil medium inlet becomes large, and the temperature after mixed flow rises to reach the set value.

Drawings

FIG. 1 is a schematic cross-sectional front view of an adjustable mixed-flow thermostatic valve for an oil-injected screw compressor according to the present invention;

FIG. 2 is a left side partial cross-sectional view of FIG. 1;

fig. 3 is a schematic diagram of the working principle of the adjustable mixed flow type temperature control valve for the oil injection screw compressor.

The reference numbers in the figures are:

100. a valve body; 101. a hot oil inlet; 102. a cold oil inlet; 103. a mixed flow outlet; 104. hot oil through holes; 105. a cold oil through hole; 110. a throttling plunger; 111. locking the nut; 120. adjusting the spring; 130. a valve core; 131. a mixed flow barrel; 140. a flow distribution plate; 150. a temperature control element; 160. an end cap; 170. a circlip; 180. an oil mixing outlet pipe; 11. a first O-shaped sealing ring; 12. an O-shaped sealing ring II; 13. an O-shaped sealing ring III; 14. an O-shaped sealing ring IV; 200. oil separating barrel; 210. an oil drum outlet pipe; 220. an oil cooler; 230. a hot oil inlet pipe; 240. cold oil inlet pipe.

Detailed Description

For a further understanding of the utility model, reference should be made to the following detailed description taken in conjunction with the accompanying drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The present invention will be further described with reference to the following examples.

Example 1

With reference to fig. 1 to fig. 3, the adjustable mixed-flow temperature control valve for an oil injection screw compressor of the present embodiment includes a valve body 100, two sides of the top of the valve body 100 are respectively provided with a hot oil inlet 101 and a cold oil inlet 102, the bottom of the valve body 100 is provided with a mixed-flow outlet 103, outlets of an oil separation barrel 200 and an oil cooler 220 are respectively provided with a hot oil inlet pipe 230 and a cold oil inlet pipe 240, and the hot oil inlet pipe 230 and the cold oil inlet pipe 240 are respectively connected to the hot oil inlet 101 and the cold oil inlet 102. Specifically, as shown in fig. 3, an outlet of the oil drum 200 in this embodiment is provided with an oil drum outlet pipe 210, the oil drum outlet pipe 210 is connected to an inlet of a hot oil inlet pipe 230 and an inlet of an oil cooler 220, respectively, wherein the oil drum 200 and the oil cooler 220 provide a hot oil medium and a cold oil medium for the adjustable mixed-flow type temperature control valve of this embodiment, and the hot oil medium and the cold oil medium simultaneously enter the valve body 100 for mixed-flow treatment and are discharged from the mixed-flow outlet 103 to supply oil to a required device.

In this embodiment, a horizontally extending throttle plunger 110 is disposed on one side of the valve body 100, an end of the throttle plunger 110 extends into the hot oil inlet 101, specifically, a threaded hole matched with the throttle plunger 110 is formed in the left side of the valve body 100 in this embodiment, and the throttle plunger 110 is locked and fixed on the valve body 100 by a lock nut 111. The flow rate of hot oil medium entering the valve body 100 from the hot oil inlet 101 can be effectively adjusted by the extension length of the throttling plunger 110, the pressure loss of the pipelines of the hot oil inlet 101 and the cold oil inlet 102 of the mixed-flow temperature control valve is adjusted to tend to balance, the unit is effectively ensured to be started, when the temperature control element 150 does not act in time, the medium entering the oil injection screw compressor main machine cannot be short-flowed by the hot oil medium from the hot oil inlet 101, the problem of instantaneous temperature rise during the startup of the cold machine is thoroughly avoided, and the normal operation of the unit is ensured.

In this embodiment, a valve core 130 extending along a length direction is disposed inside the valve body 100, an adjusting spring 120 is disposed on one side of the valve core 130, a temperature control element 150 is disposed on the other side of the valve core 130, and a mixed flow barrel 131 is disposed between the adjusting spring 120 and the temperature control element 150. As shown in fig. 1, in this embodiment, one end of the adjusting spring 120 is fixed on a fixing column of the valve core 130, the other end of the adjusting spring 120 extends into the mixed flow barrel 131, and a splitter plate connected to the adjusting spring 120 is welded inside the mixed flow barrel 131, and the splitter plate provides a stable connection support for the adjusting spring 120.

In this embodiment, the outer periphery of the mixing barrel 131 is provided with a hot oil through hole 104 and a cold oil through hole 105 at positions corresponding to the hot oil inlet 101 and the cold oil inlet 102, and the hot oil through hole 104 and the cold oil through hole 105 are both communicated with the inside of the mixing barrel 131. Wherein the hot oil through holes 104 and the cold oil through holes 105 are all a plurality of and are evenly distributed on the periphery of the mixed flow barrel 131. Specifically, as shown in fig. 1 and fig. 2, in this embodiment, the periphery of the mixed flow barrel 131 is provided with multiple circles of hot oil through holes 104 and cold oil through holes 105 at positions corresponding to the hot oil through holes 104 and the cold oil through holes 105, and the hot oil medium and the cold oil medium enter the mixed flow barrel 131 through the hot oil through holes 104 and the cold oil through holes 105 respectively to be mixed and temperature-adjusted, and then are collected to the bottom of the valve body 100 to be discharged to the outside. When the adjusting spring 120 is in an initial state, the cold oil through hole 105 and the cold oil inlet 102 on the mixed-flow barrel 131 are staggered to a certain degree, the hot oil through hole 104 and the hot oil inlet 101 are completely communicated, at the moment, the inlet of a cold oil medium entering the mixed-flow barrel 131 is smaller than the inlet of the hot oil medium entering the mixed-flow barrel 131, the flow rate of the hot oil medium entering the mixed-flow barrel 131 in the initial state is adjusted by adjusting the length of the throttling plunger 110 plugged into the hot oil inlet 101, and the problem that the temperature control element 150 is volatile when the screw machine is started can be effectively avoided.

In this embodiment, a first O-ring 11, a second O-ring 12, and a third O-ring 13 are sequentially disposed along the length direction between the inner cavity of the valve body 100 and the inlet wall of the outer mixed flow barrel 131 of the valve core 130, so that the sealing effect inside the valve body 100 can be effectively ensured. The end of the temperature control element 150 far away from the adjusting spring 120 is inserted into the end cover 160, the end cover 160 is fixed on the valve body 100 through the elastic retainer ring 170, and an O-ring seal four 14 is arranged in the inner cavity of the valve body 100 and on the periphery of the end cover 160.

The mixed-flow temperature control valve of the embodiment is installed at the outlets of an oil cooler 220 and an oil separation barrel 200 of equipment, and the pressure loss of the pipelines of a hot oil inlet 101 and a cold oil inlet 102 of the mixed-flow temperature control valve tends to be balanced by adjusting the throttling plunger 110, so that the unit is effectively ensured to be started, when the temperature control element 150 does not act in time, a medium entering the oil injection screw compressor main machine cannot be short-flowed by the hot oil medium of the hot oil inlet 101, and the problem of instantaneous temperature rise when the cold machine is started is thoroughly avoided. When the temperature of the mixed medium is too high, the temperature sensing material (generally paraffin) in the temperature control element 150 expands and compresses the spring in the temperature control element 150, so that the valve rod on the temperature control element 150 is driven to move leftwards, the valve rod pushes the mixed flow barrel 131 to move leftwards and extrudes the adjusting spring 120 leftwards, and at the moment, the hot oil through hole 104 on the mixed flow barrel 131 is staggered with the hot oil inlet 101 to cause the inlet of the hot oil medium entering the mixed flow barrel 131 to be reduced, so that the mixed temperature is reduced to reach a set value. On the contrary, when the temperature of the mixed flow medium is too low, the temperature sensing material shrinks, the spring in the hot oil inlet 101 resets, thereby driving the valve rod on the temperature control element 150 to move rightwards, the valve rod pulls the mixed flow barrel 131 to move rightwards, at this time, the cold oil through hole 105 on the mixed flow barrel 131 and the cold oil inlet 102 have a certain dislocation, so that the inlet of the cold oil medium entering the mixed flow barrel 131 becomes small, the hot oil through hole 104 and the hot oil inlet 101 are completely communicated, at this time, the inlet of the cold oil medium of the mixed flow barrel 131 becomes small, the inlet of the hot oil medium becomes large, thereby the temperature after mixed flow rises to reach the set value. The adjustable mixed-flow type temperature control valve of the embodiment can effectively solve the problem that the temperature control element 150 is volatile when the screw machine is started, has a simple structure and convenient operation, prolongs the service life of the temperature control element 150, and ensures the normal operation of a machine set.

The examples described herein are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall within the protection scope of the present invention.

Claims

1. The utility model provides an oil spout adjustable mixed flow temperature-sensing valve for screw compressor which characterized in that: the novel oil mixing valve comprises a valve body (100), wherein a hot oil inlet (101) and a cold oil inlet (102) are respectively formed in two sides of the top of the valve body (100), a mixed flow outlet (103) is formed in the bottom of the valve body (100), a horizontally extending throttling plunger (110) is arranged on one side of the valve body (100), the end of the throttling plunger (110) extends into the hot oil inlet (101), a valve core (130) extending in the length direction is arranged inside the valve body (100), an adjusting spring (120) is arranged on one side of the valve core (130), a temperature control element (150) is arranged on the other side of the valve core (130), and a mixed flow barrel (131) is arranged between the adjusting spring (120) and the temperature control element (150).

2. The adjustable mixed-flow thermostatic valve for the oil-injected screw compressor as claimed in claim 1, wherein: one end of the adjusting spring (120) is fixed on a fixed column of the valve core (130), the other end of the adjusting spring (120) extends into the mixed flow barrel (131), and a flow distribution plate connected with the adjusting spring (120) is welded inside the mixed flow barrel (131).

3. The adjustable mixed-flow thermostatic valve for oil-injected screw compressor of claim 2, wherein: the periphery of the mixed flow barrel (131) is provided with a hot oil through hole (104) and a cold oil through hole (105) at positions corresponding to the hot oil inlet (101) and the cold oil inlet (102), and the hot oil through hole (104) and the cold oil through hole (105) are communicated with the inside of the mixed flow barrel (131).

4. The adjustable mixed-flow thermostatic valve for the oil-injected screw compressor as claimed in claim 3, wherein: the hot oil through holes (104) and the cold oil through holes (105) are multiple and are uniformly distributed on the periphery of the mixed flow barrel (131).

5. The adjustable mixed-flow thermostatic valve for the oil-injected screw compressor as claimed in claim 1, wherein: an O-shaped sealing ring I (11), an O-shaped sealing ring II (12) and an O-shaped sealing ring III (13) are sequentially arranged between the inner cavity of the valve body (100) and the outer wall of the valve core (130) along the length direction.

6. The adjustable mixed-flow thermostatic valve for the oil-injected screw compressor as claimed in claim 5, wherein: the end part of one side of the temperature control element (150) far away from the adjusting spring (120) is inserted into an end cover (160), and the end cover (160) is fixed on the valve body (100) through a flexible retainer ring (170).

7. The adjustable mixed-flow thermostatic valve for oil-injected screw compressor of claim 6, wherein: and an O-shaped sealing ring IV (14) is arranged on the inner cavity of the valve body (100) and the periphery of the end cover (160).

8. The adjustable mixed-flow thermostatic valve for oil-injected screw compressor of any one of claims 1-7, wherein: the throttle plunger (110) is locked and fixed on the valve body (100) through a locking nut (111).

9. The adjustable mixed-flow thermostatic valve for oil-injected screw compressor of claim 8, wherein: the outlets of the oil separating barrel (200) and the oil cooler (220) are respectively provided with a hot oil inlet pipe (230) and a cold oil inlet pipe (240), and the hot oil inlet pipe (230) and the cold oil inlet pipe (240) are respectively connected with a hot oil inlet (101) and a cold oil inlet (102).