CN216590009U

CN216590009U - Suction pressure control valve for protecting refrigeration compressor

Info

Publication number: CN216590009U
Application number: CN202220163146.8U
Authority: CN
Inventors: 顾春澍
Original assignee: Nantong Red Star Air Compressor Parts Manufacturing Co ltd
Current assignee: Nantong Red Star Air Compressor Parts Manufacturing Co ltd
Priority date: 2022-01-21
Filing date: 2022-01-21
Publication date: 2022-05-24
Anticipated expiration: 2032-01-21

Abstract

The utility model discloses a suction pressure control valve for protecting compressor, including the valve body, be equipped with the bellows in the valve body, the bellows is issued and is connected the valve rod, and the valve rod is connected with the case, is equipped with the pressurize spring in the bellows, and the valve body top is equipped with the valve gap, and during the valve gap was arranged in to the regulator spring seat, the valve gap top was filled in and is had stifled the emission, and stifled stopper had in emitting, is equipped with entry and export on the valve body, becomes 90 between entry and the export, and the entry passes through the flange to be connected with the condenser, and the export is passed through flange group and is connected with the compressor, the utility model discloses a flange formula is connected, and the whole change is convenient, can not destroy the valve body. The valve cover is in threaded connection with the valve body, and internal parts are convenient to maintain and replace. The lower part in the valve body is provided with a circle of positioning retaining ring, the valve core is in close contact with the positioning retaining ring when in a closed state, the valve rod is sleeved with the shaft sleeve for positioning, the valve rod moves up and down flexibly and cannot deviate, and the sealing property of the valve core is ensured.

Description

Suction pressure control valve for protecting refrigeration compressor

Technical Field

The utility model relates to a suction pressure control valve for protecting compressor.

Background

The suction pressure control valve is installed between the condenser and the compressor, and mainly used for protecting the compressor. When the compressor is started, the flow is adjusted according to the pressure at the outlet of the suction valve, the compressor is overloaded due to excessive flow, and the refrigerating effect is not obvious due to insufficient flow. After the compressor is stopped, the suction pressure control valve is closed, and after the compressor is not used for a long time (in a condenser, the compressor is in a high-pressure state), the compressor can be overloaded when the compressor is restarted.

At present, a suction pressure control valve is connected with a condenser and a compressor by welding or a clamping joint, if the suction pressure control valve needs to be replaced, the suction pressure control valve needs to be destructively removed (when the clamping joint is used for connection, a connecting end of the valve deforms), and the cost is high; moreover, the valve cover and the valve body are connected in a welding mode, if internal parts need to be replaced, the whole valve body needs to be damaged, and maintenance is inconvenient.

Disclosure of Invention

An object of the utility model is to provide a suction pressure control valve for protecting compressor to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme: a suction pressure control valve for protecting a refrigeration compressor comprises a valve body, wherein a corrugated pipe is arranged in the valve body, one end of the corrugated pipe is connected with the valve body through an upper connecting block, the other end of the corrugated pipe is provided with a lower connecting block, the lower connecting block is connected with a valve rod, the end part of the valve rod is connected with a valve core, a pressure maintaining spring is arranged in the corrugated pipe, one end of the pressure maintaining spring is connected with an adjusting spring seat, the top of the valve body is provided with a valve cover, the adjusting spring seat is arranged in the valve cover, the other end of the pressure maintaining spring is connected with the lower connecting block, a blocking cap is plugged in the top of the valve cover, a dustproof plug is plugged in the blocking cap, the valve body is provided with an inlet and an outlet, the inlet and the outlet form 90 degrees, the inlet is connected with a condenser through a flange, the outlet is connected with the compressor through a flange group, the valve cover is in threaded connection with the valve body, the inner lower part of the valve body is provided with a circle of positioning retaining ring, and the valve core is in a closed state that the valve core is in close contact with the positioning retaining ring, the valve rod is sleeved with a shaft sleeve.

The utility model discloses a further improvement lies in: the dustproof plug is provided with a breathing hole.

The utility model discloses a further improvement lies in: a hole snap spring is arranged below the positioning retainer ring.

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

the utility model discloses a flange formula is connected, adopts flange joint between entry and the condenser promptly, adopts flange assembly to connect between export and the compressor, and like this, the whole change is convenient, can not destroy the valve body.

The valve body is in threaded connection with the valve cover, and internal parts are convenient to maintain and replace.

The shaft sleeve is sleeved on the valve rod to position, the valve rod moves up and down flexibly, and cannot deviate, and the sealing performance of the valve core is guaranteed.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the open state of the present invention;

reference numerals: 1-valve body, 2-corrugated pipe, 3-upper connecting block, 4-lower connecting block, 5-valve rod, 6-valve core, 7-pressure maintaining spring, 8-adjusting spring seat, 9-valve cover, 10-blocking cap, 11-dust plug, 12-inlet, 13-outlet, 14-flange, 15-flange group, 16-positioning retainer ring, 17-shaft sleeve, 18-breathing hole and 19-hole snap spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1 and fig. 2, the present embodiment provides a technical solution: a suction pressure control valve for protecting a refrigeration compressor comprises a valve body 1, a corrugated pipe 2 is arranged in the valve body 1, one end of the corrugated pipe 2 is connected with the valve body 1 through an upper connecting block 3, the other end of the corrugated pipe 2 is provided with a lower connecting block 4, the lower connecting block 4 is connected with a valve rod 5, the end part of the valve rod 5 is connected with a valve core 6, a pressure maintaining spring 7 is arranged in the corrugated pipe 2, one end of the pressure maintaining spring 7 is connected with an adjusting spring seat 8, the top of the valve body 1 is provided with a valve cover 9, the adjusting spring seat 8 is arranged in the valve cover 9, the other end of the pressure maintaining spring 7 is connected with the lower connecting block 4, a blocking cap 10 is plugged in the top of the valve cover 9, a dustproof plug 11 is plugged in the blocking cap 10, an inlet 12 and an outlet 13 are arranged on the valve body 1, a 90 degrees is formed between the inlet 12 and the outlet 13, the inlet 12 is connected with a condenser through a flange 14, the outlet 13 is connected with the compressor through a flange group 15, the flange group is divided into an upper flange and a lower flange, the bolts penetrate through the two flanges when the valve body 1 is connected; therefore, the whole valve body is convenient to replace, and the valve body cannot be damaged.

The valve cover 9 is in threaded connection with the valve body 1, and internal parts are convenient to maintain and replace.

The lower part in the valve body 1 is provided with a circle of positioning retaining ring 16, the closing state of the valve core 6 is that the valve core 6 is in close contact with the positioning retaining ring 16, the valve rod 5 is sleeved with a shaft sleeve 17 for positioning, the valve rod moves up and down flexibly without deviation, and the sealing property of the valve core is ensured.

The dust plug 11 is provided with a breathing hole 18. A hole snap spring 19 is arranged below the positioning retainer ring 16, so that the positioning retainer ring 16 can be prevented from sliding off.

Before the machine operates: the pressure of the condenser is 8-16 bar, the valve core is in a closed state by overcoming the force of the corrugated pipe and the spring, namely the valve core is in close contact with the positioning retainer ring.

Starting a compressor: the outlet is negative pressure, the valve rod moves downwards, the valve core is slightly opened to suck condensate, the pressure of the inlet is reduced, the corrugated pipe and the spring force are reset to enable the valve core to act, and when the pressure at the two ends is equal, the opening degree of the valve core is balanced.

Stopping the compressor: the pressure of the condenser compresses the corrugated pipe to move the valve rod upwards, and the valve core is tightly contacted with the positioning retaining ring, namely the valve core is closed.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A suction pressure control valve for protecting a refrigeration compressor comprises a valve body (1), a corrugated pipe (2) is arranged in the valve body (1), one end of the corrugated pipe (2) is connected with the valve body (1) through an upper connecting block (3), the other end of the corrugated pipe (2) is provided with a lower connecting block (4), the lower connecting block (4) is connected with a valve rod (5), the end part of the valve rod (5) is connected with a valve core (6), a pressure maintaining spring (7) is arranged in the corrugated pipe (2), one end of the pressure maintaining spring (7) is connected with an adjusting spring seat (8), the top of the valve body (1) is provided with a valve cover (9), the adjusting spring seat (8) is arranged in the valve cover (9), the other end of pressurize spring (7) is connected lower connecting block (4), valve gap (9) top internal plug has stifled and emits (10), and the stopper has dust plug (11), its characterized in that in stifled emitting (10): the air conditioner is characterized in that an inlet (12) and an outlet (13) are arranged on the valve body (1), a 90-degree angle is formed between the inlet (12) and the outlet (13), the inlet (12) is connected with a condenser through a flange (14), the outlet (13) is connected with a compressor through a flange group (15), the valve cover (9) is in threaded connection with the valve body (1), a circle of positioning check ring (16) is arranged at the inner lower part of the valve body (1), the valve core (6) is in close contact with the positioning check ring (16) when in a closed state, and a shaft sleeve (17) is sleeved on the valve rod (5).

2. A suction pressure control valve for protecting a refrigerant compressor as claimed in claim 1, wherein: the dustproof plug (11) is provided with a breathing hole (18).

3. A suction pressure control valve for protecting a refrigerant compressor as claimed in claim 1, wherein: and a hole clamp spring (19) is arranged below the positioning retainer ring (16).