CN218330312U - Pressure type thermometer for liquid ring vacuum pump - Google Patents

Abstract

The utility model discloses a pressure type thermometer for liquid ring vacuum pump, include: the display body, the connecting pipe, the movable nut, the bellows, the control valve, rotatory buckle, the bulb, the filter screen, the close valve, the thread groove, the lower extreme fixed mounting of display body has the connecting pipe, the outer end fixed mounting of connecting pipe has the movable nut, the lower extreme fixed mounting of connecting pipe has the bellows, the lower extreme of movable nut is provided with the control valve, through the setting of bellows, the bellows has the elasticity, can produce the displacement under the pressure effect, and the bulb needs to guarantee to submerge completely in the measured medium during measurement, the bellows can further compensate the bulb displacement, improve the accuracy of data, the temperature sensing part is including the bulb that has filter element, liquid gets into the bulb and often accompanies other impurity such as incrustation scale, not only influence the life of bulb and influence the degree of accuracy of measured data simultaneously, filter element can further filter liquid, make data more accurate.

Description

Pressure type thermometer for liquid ring vacuum pump

Technical Field

The utility model relates to a vacuum pump detecting instrument technical field especially relates to a pressure type thermometer for liquid ring vacuum pump.

Background

Conventional liquid ring vacuum pumps typically use water as the working medium. The biasing vanes rotate in the partially liquid-filled pump chamber. The centrifugal force generated by the rotating motion of the vanes causes the liquid in the pump chamber to form a liquid ring, and the gas is transferred in the space between each vane and the liquid ring. When the liquid ring vacuum pump is used, the situation of overhigh temperature often occurs, the use effect of equipment is influenced, and therefore, a pressure thermometer is arranged to detect the internal temperature at any time.

Traditional pressure type thermometer is thin again long because the capillary, so can produce hysteresis during the transmission pressure, cause the response speed of thermometer to slow down, steam in capillary and spring tube evaporation or condensation take place, can not be correct, in time react the change of temperature, pressure thermometer's bulb and measured medium direct contact experience temperature variation, traditional pressure type thermometer does not do further protection to the bulb, liquid medium gets into the bulb along with impurity, and with water tank direct contact when pressure type thermometer installs, the temperature measurement is often along with the vibration, influence the accuracy of detection data.

In view of this, carry out research improvement to current problem, provide a pressure type thermometer for liquid ring vacuum pump, it is reasonable to have a structural design, can make the temperature package pass through the filter screen and can protect to make the accuracy of detection data, and through the setting of movable nut, can dismantle the display body, thereby can be portable, aim at through this technique, reach the purpose of solving the problem and improving practical value nature.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a pressure type thermometer for a liquid ring vacuum pump.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a pressure thermometer for a liquid ring vacuum pump, comprising: show body, connecting pipe, movable nut, bellows, control valve, rotatory buckle, wenbao, filter screen, closed valve, thread groove, the lower extreme fixed mounting of display body has the connecting pipe, the outer end fixed mounting of connecting pipe has movable nut, the lower extreme fixed mounting of connecting pipe has the bellows, movable nut's lower extreme is provided with the control valve, the inside fixed mounting of control valve has rotatory buckle, the lower extreme fixed mounting of control valve has the wenbao, the outer end fixed mounting of wenbao has the filter screen, the inside movable mounting of control valve has closed valve, movable nut's inside fixed mounting has the thread groove.

As a further description of the above technical solution:

the filter screen adopts the filter screen screw thread to cup joint in the thermal bulb periphery, the diameter of filter screen is greater than the diameter of thermal bulb.

As a further description of the above technical solution:

the quantity of activity nut sets up to three groups, and sets up at the upper end and the lower extreme of bellows, and also sets up the upper end at the control valve, the quantity of connecting pipe sets up to two sets of, and with activity nut interconnect.

As a further description of the above technical solution:

one end of the corrugated pipe is fixedly connected to one side of the display body, and the other end of the corrugated pipe is in transition fit with the air seal inside the connecting pipe.

As a further description of the above technical solution:

and a sealing ring is arranged in one side of the display body.

As a further description of the above technical solution:

the number of the closed valves is set to be a plurality of, the closed valves are in a fan-blade shape, the number of the thread grooves is set to be three groups, and the thread grooves are connected in a rotating mode to enable the connecting pipes to be connected with one another.

The utility model discloses following beneficial effect has: through the setting of bellows, the bellows has elasticity, can produce the displacement under the pressure effect, and the temperature bulb need guarantee to submerge completely in being surveyed the medium during measurement, the bellows can be further compensated the temperature bulb displacement, improve the accuracy of data, the temperature sensing part is including the temperature bulb that has filter element, liquid gets into the temperature bulb and accompanies other impurity such as incrustation scale often, not only influence the life of temperature bulb and influence the degree of accuracy of measured data simultaneously, filter element can further filter liquid, make data more accurate.

Drawings

Fig. 1 is a perspective view of a pressure type thermometer for a liquid ring vacuum pump according to the present invention;

FIG. 2 is an internal view of a closing valve of a pressure type thermometer for a liquid ring vacuum pump according to the present invention;

fig. 3 is a schematic view of the inside of the movable nut of the pressure type thermometer for a liquid ring vacuum pump according to the present invention.

Illustration of the drawings:

1. a display body; 2. a connecting pipe; 3. a movable nut; 4. a bellows; 5. a control valve; 6. rotating the buckle; 7. a temperature bag; 8. a filter screen; 9. closing the valve; 10. a thread groove.

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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the present invention provides an embodiment: a pressure thermometer for a liquid ring vacuum pump, comprising: display body 1, connecting pipe 2, movable nut 3, bellows 4, control valve 5, rotatory buckle 6, the thermal bulb 7, filter screen 8, closing valve 9, thread groove 10, the lower extreme fixed mounting of display body 1 has connecting pipe 2, can be with display body 1 connection, the outer end fixed mounting of connecting pipe 2 has movable nut 3, can conveniently dismantle, the lower extreme fixed mounting of connecting pipe 2 has bellows 4, can seal, the lower extreme of movable nut 3 is provided with control valve 5, can manual control, the inside fixed mounting of control valve 5 has rotatory buckle 6, can rotate closed, the lower extreme fixed mounting of control valve 5 has thermal bulb 7, can be to water quality testing, the outer end fixed mounting of thermal bulb 7 has filter screen 8, can block impurity, the inside movable mounting of control valve 5 has closing valve 9, can be closed, the inside fixed mounting of movable nut 3 has thread groove 10, convenient aggregate erection.

Specifically, the filter screen 8 is sleeved on the periphery of the thermal bulb 7 through a filter screen thread, and the diameter of the filter screen 8 is larger than that of the thermal bulb 7, so that filtering can be achieved.

Specifically, the quantity of movable nut 3 sets up to three groups, and sets up in the upper end and the lower extreme of bellows 4, and also sets up in the upper end of control valve 5, conveniently dismantles and carries, and the quantity of connecting pipe 2 sets up to two sets of, and with movable nut 3 interconnect, can assemble.

Specifically, one end of the bellows 4 is fixedly connected to one side of the display body 1, and the other end is in transition fit with the air seal inside the connection pipe 2, so that a seal can be formed.

Specifically, a seal ring is provided inside the display body 1 to seal the display body.

Specifically, the number of the closing valves 9 is set to be a plurality of, the closing valves are shaped like fan blades and can be closed, the number of the thread grooves 10 is set to be three groups, the connecting pipes 2 can be connected with one another through rotating, and the disassembly is convenient.

The working principle is as follows: the gas and water exhausted by the liquid ring vacuum pump enter the water tank through the exhaust pipe, the pressure type thermometer is placed into the water tank, the thermometer bulb 7 of the thermometer is completely inserted into the measured medium to reduce heat conduction error, the medium enters the thermometer bulb 7 through the filter screen 8, the pressure of the working medium in the thermometer bulb 7 is increased due to the volume expansion caused by the temperature rise, as the bellows 4 of the thermometer bulb 7 and the inside of the display device form a closed structure, under the driving of the working medium, when the temperature change is sensed by the thermometer bulb 7, the saturated steam of the closed system generates corresponding pressure, the pressure change is transmitted to the display through the bellows 4 to cause the curvature change of the elastic element, so that the free end of the elastic element is displaced, the displacement is changed into an indicated value by the aid of the transmission mechanism, and the medium measurement can be carried out according to the temperature indicated on the indicating dial at the moment.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions on some technical features, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims (6)

1. A pressure thermometer for a liquid ring vacuum pump, comprising: show body (1), connecting pipe (2), movable nut (3), bellows (4), control valve (5), rotatory buckle (6), bulb (7), filter screen (8), closed valve (9), thread groove (10), its characterized in that: the lower extreme fixed mounting who shows body (1) has connecting pipe (2), the outer end fixed mounting of connecting pipe (2) has movable nut (3), the lower extreme fixed mounting of connecting pipe (2) has bellows (4), the lower extreme of movable nut (3) is provided with control valve (5), the inside fixed mounting of control valve (5) has rotatory buckle (6), the lower extreme fixed mounting of control valve (5) has temperature bulb (7), the outer end fixed mounting of temperature bulb (7) has filter screen (8), the inside movable mounting of control valve (5) has closing valve (9), the inside fixed mounting of movable nut (3) has thread groove (10).

2. A pressure thermometer for a liquid ring vacuum pump as defined in claim 1 wherein: the filter screen (8) is sleeved on the periphery of the thermal bulb (7) by adopting filter screen threads, and the diameter of the filter screen (8) is larger than that of the thermal bulb (7).

3. A pressure thermometer for a liquid ring vacuum pump as defined in claim 1 wherein: the quantity of activity nut (3) sets up to three groups, and sets up at the upper end and the lower extreme of bellows (4), and also sets up the upper end at control valve (5), the quantity of connecting pipe (2) sets up to two sets of, and with activity nut (3) interconnect.

4. A pressure thermometer for a liquid ring vacuum pump as defined in claim 1 wherein: one end of the corrugated pipe (4) is fixedly connected to one side of the display body (1), and the other end of the corrugated pipe is in air-tight transition fit with the inside of the connecting pipe (2).

5. A pressure thermometer for a liquid ring vacuum pump as defined in claim 1 wherein: a sealing ring is arranged inside one side of the display body (1).

6. A pressure thermometer for a liquid ring vacuum pump as defined in claim 1 wherein: the number of the closing valves (9) is set to be a plurality of, the closing valves are in the shape of fan blades, the number of the thread grooves (10) is set to be three groups, and the connecting pipes (2) can be connected with each other through rotating connection.

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