Internal pressure measuring instrument

Abstract

An internal pressure measuring instrument comprises a supporting tool and a measuring assembly. The supporting tool comprises a mounting seat, a supporting rod, a supporting rod sleeve and a supporting seat, the supporting rod is vertically mounted on the mounting seat, the supporting seat is horizontally placed on the top surface of the supporting rod sleeve, and the supporting seat is provided with a bottle clamping position; the measuring assembly comprises a pressing strip, a pressure gauge and a blowing needle, the pressing strip can be slidably arranged on the top of the supporting rod in a sleeving mode in the vertical direction, the blowing needle is vertically installed on the bottom face of the pressing strip, one end of the blowing needle is in airtight connection with the pressure gauge, and the other end of the blowing needle faces the bottle clamping position. The bottle clamping position of the supporting seat can be used for fixing a bottle, displacement of the bottle in the measuring process is avoided, the pressing strip can be used for ensuring that the blowing needle is always aligned with a bottle cap, and the blowing needle is prevented from puncturing other positions; the blowing needle can pierce the bottle cap and keep at the current position by pressing down the pressing strip, the internal pressure value of the bottle can be obtained through the pressure gauge, and the measurement process is easy to operate, convenient and labor-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of beverage bottle measuring instruments, in particular to an internal pressure measuring instrument. Background Art

[0002] In daily life, we often use beverage bottles, and how to ensure that these bottles can remain intact under various pressure conditions is a concern of many consumers. Therefore, it is usually necessary to test the various performances of beverage bottles, and the internal pressure test of beverage bottles is one of the important test items for beverage bottle performance.

[0003] In the prior art, the method for measuring the internal pressure of a bottle is as follows: first, a blow needle is installed on the joint of a pressure gauge; then, the bottle is held in one hand, and the blow needle is used with the other hand to pierce the bottle cap, and the internal pressure value of the bottle is obtained through the pressure gauge; finally, the blow needle is removed from the bottle cap. However, the above method for measuring the internal pressure of a bottle has the following disadvantages:

[0004] 1. If you hold the bottle with only one hand and the holding force is not enough, the bottle cannot be fixed, which makes it difficult for the blow needle to align with the bottle cap. The blow needle is easy to pierce other positions, which may cause damage to the bottle and also has certain operational safety hazards. If the holding force is excessive, the bottle will be crushed, causing damage to the bottle and affecting the accuracy of the bottle internal pressure measurement;

[0005] 2. When the bottle is a gas-containing bottle, after obtaining the internal pressure value of the bottle, the gas in the bottle cannot be released in time. When the blow needle is removed from the bottle cap, the gas and liquid in the bottle will overflow from the bottle cap together, causing pollution to the measurement environment. As a result, this internal pressure measurement method is only applicable to cylinders without gas, and has certain limitations. Utility Model Content

[0006] In order to overcome the deficiencies of the prior art, the utility model provides an internal pressure measuring instrument.

[0007] The technical solution adopted by the utility model to solve its technical problems is:

[0008] An internal pressure measuring instrument, characterized in that it comprises a supporting tool and a measuring component;

[0009] The support tooling comprises a mounting seat, a support rod, a support rod sleeve and a support seat, wherein the support rod is vertically mounted on the mounting seat, the support rod sleeve is sleeved on the outer side of the support rod, the support seat is horizontally placed on the top surface of the support rod sleeve, a part of the support rod protrudes from the top surface of the support seat, and the support seat is provided with a bottle clamp for fixing the bottle;

[0010] The measuring assembly includes a pressure strip, a pressure gauge and a blow needle. The pressure strip can be slidably mounted on the top of the support rod in a vertical direction. The blow needle is vertically installed on the bottom surface of the pressure strip. One end of the blow needle is air-tightly connected to the pressure gauge, and the other end of the blow needle is positioned toward the bottle and has a sharp angle.

[0011] In the utility model, the measuring component also includes a balancing holding mechanism and a resetting mechanism. The balancing holding mechanism is configured to fix the pressure strip to the support rod and to keep the pressure strip sliding horizontally along the support rod during operation. The resetting mechanism and the mounting seat, the support rod, and the pressure strip are configured so that the pressure strip has a resetting tendency.

[0012] In the utility model, there are two support rods and they are respectively vertically installed on the left and right sides of the mounting seat. The outer sides of the support rods are each covered with the support rod sleeves. The support seat is placed on the top surfaces of the two support rod sleeves to maintain horizontality. The left and right sides of the pressure strip can be slidably covered on the tops of the two support rods along the vertical direction.

[0013] In the utility model, the reset mechanism includes two first compression springs, which are respectively mounted on the two support rods, the lower ends of the two first compression springs respectively abut against the top surface of the support seat, and the upper ends of the two first compression springs respectively abut against the bottom surface of the pressure strip.

[0014] In the utility model, the balanced holding mechanism includes two groups of balanced holding components, which are respectively arranged on the left and right sides of the pressure strip, and the balanced holding components include a pressure block, a second compression spring and a bolt. The left and right sides of the pressure strip are provided with a pressure plate extending outward and a first mounting groove that exposes the support rod; one end of the pressure block is arranged in the first mounting groove and has a through hole for the support rod to pass through, and the through hole is configured to limit the pressure strip from sliding in the vertical direction when the pressure block is in an inclined position and to allow the pressure strip to slide in the vertical direction when the pressure block is in a horizontal position; the bolt passes through the other end of the pressure block, and the second compression spring is connected to the bottom side of the pressure plate, and the second compression spring is configured to make the pressure block in an inclined position without external force.

[0015] In the utility model, the support rod is provided with a limiting portion for preventing the pressure strip from sliding out from the top end of the support rod.

[0016] In the present invention, the measuring assembly further comprises an exhaust valve, the exhaust valve is mounted on the pressure strip, and the exhaust valve is airtightly connected to one end of the blow needle.

[0017] In the utility model, an escape position capable of escaping the bottle shoulder is provided between the bottle clamping position and the bottom surface of the support seat.

[0018] In the utility model, the bottle clamp extends backward from the middle of the front side of the support seat, and the bottle clamp includes a straight position and a semicircular position arranged in sequence along the extension direction, and an arc transition is adopted between the straight position and the front side of the support seat.

[0019] In the utility model, a limiting recess is provided on the top surface of the support seat, the limiting recess is arranged around the bottle clamping position, and the limiting recess is matched with the bottle support ring.

[0020] Beneficial effects of the utility model:

[0021] 1. The bottle can be fixed by the bottle clamp of the support seat to prevent the bottle from shifting during the measurement process; the pressure strip can ensure that the blow needle is always aligned with the bottle cap to prevent the blow needle from piercing other positions; the blow needle can pierce the bottle cap and remain in the current position by pressing the pressure strip down, and the internal pressure value of the bottle can be obtained by the pressure gauge. The measurement process is simple, convenient and labor-saving; after obtaining the internal pressure value of the bottle, the pressure strip is reset under the elastic force of the first compression spring, and the blow needle is moved out of the bottle cap. At this time, the bottle can be replaced for the next measurement, which effectively improves the measurement efficiency.

[0022] 2. When the bottle is a gas bottle, after obtaining the internal pressure value of the bottle, open the additional exhaust valve to release the gas in the bottle until the internal pressure is equal to the external pressure. After releasing the gas in the bottle, reset it to prevent the liquid in the bottle from overflowing from the bottle cap with the gas in the bottle after resetting, so as to avoid pollution to the measurement environment.

[0023] Therefore, the internal pressure measuring instrument is suitable for both cylinders containing gas and cylinders without gas, and has good versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0025] Figure 1 It is the front view of this embodiment;

[0026] Figure 2 is a top view of this embodiment;

[0027] Figure 3 is a top view of the support seat;

[0028] Figure 4 is a cross-sectional view of the support seat;

[0029] Figure 5 It is a schematic diagram of the installation of the balancing grip mechanism;

[0030] Figure 6 for Figure 5 A magnified view of middle;

[0031] Figure 7 for Figure 5 Enlarged view of middle B;

[0032] Figure 8 It is a top view of the layering strip;

[0033] Fig. 9 for Figure 8 Enlarged view of middle C;

[0034] Fig.10 It is the structural schematic diagram of the blow needle;

[0035] Fig.11 Schematic diagram of the bottle structure. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0037] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the utility model, the descriptions of "first" or "second" etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0039] Reference Figure 1-11 , an internal pressure measuring instrument, comprising a supporting tool and a measuring assembly; the supporting tool comprises a mounting seat 1, a supporting rod 4, a supporting rod sleeve 2 and a supporting seat 3, the supporting rod 4 is vertically mounted on the mounting seat 1, the supporting rod sleeve 2 is sleeved on the outer side of the supporting rod 4, the supporting seat 3 is horizontally placed on the top surface of the supporting rod sleeve 2, a part of the supporting rod 4 protrudes from the top surface of the supporting seat 3, and the supporting seat 3 is provided with a bottle clamping position 31 for fixing a bottle 200;

[0040] Furthermore, the measuring assembly includes a pressure strip 5, a pressure gauge 6 and a blow needle 7. The pressure strip 5 can be slidably mounted on the top of the support rod 4 in the vertical direction. The blow needle 7 is vertically installed on the bottom surface of the pressure strip 5. One end of the blow needle 7 is airtightly connected to the pressure gauge 6, and the other end of the blow needle 7 faces the bottle clamping position 31 and has a sharp angle. The sharp angle 70 is used to pierce the bottle cap.

[0041] As a preferred embodiment, the measuring component also includes a balancing holding mechanism and a resetting mechanism. The balancing holding mechanism is configured to fix the pressure strip 5 to the support rod 4, and to keep the pressure strip 5 horizontally sliding along the support rod 4 during operation. The resetting mechanism and the mounting seat 1, the support rod 4, and the pressure strip 5 are configured so that the pressure strip 5 has a resetting tendency.

[0042] In this embodiment, there are two support rods 4, which are respectively vertically mounted on the left and right sides of the mounting seat 1. The outer sides of the support rods 4 are each covered with the support rod sleeves 2. The support seat 3 is placed on the top surfaces of the two support rod sleeves 2 to maintain horizontality. At the same time, the support seat 3 can be set separately from the support rod sleeves 2. The left and right sides of the pressure strip 5 can be slidably mounted on the tops of the two support rods 4 along the vertical direction. The lower end of the support rod 4 is provided with a lower thread head 41 threadedly connected to the mounting seat 1, so as to realize the installation and fixation of the support rod 4; at the same time, since the support rod sleeve 2 is mounted outside the support rod 4, the support rod sleeve 2 is limited by the support rod 4, so that the support rod sleeve 2 cannot move arbitrarily, and the lower end of the support rod sleeve 2 is kept in contact with the mounting seat 1.

[0043] Furthermore, the reset mechanism includes two first compression springs 8, and the two first compression springs 8 are respectively mounted on the two support rods 4, so that the support rods 4 are used to limit the first compression springs 8 to prevent the first compression springs 8 from being detached from between the support seat 3 and the pressure strip 5; the lower ends of the two first compression springs 8 respectively abut against the left and right ends of the top surface of the support seat 3, and the upper ends of the two first compression springs 8 respectively abut against the left and right ends of the bottom surface of the pressure strip 5, so that the two first compression springs 8 can elastically support the left and right ends of the pressure strip 5 for reset, thereby ensuring that the left and right ends of the pressure strip 5 can move and reset as synchronously as possible, thereby improving the smoothness of the reset of the pressure strip 5.

[0044] Furthermore, the balanced gripping mechanism includes two groups of balanced gripping components 9, which are respectively arranged on the left and right sides of the pressure strip 5, and the balanced gripping components 9 include a pressure block 91, a second compression spring 92 and a bolt 93. The left and right sides of the pressure strip 5 are both provided with a pressure plate 51 extending outward and a first mounting groove 52 that exposes the support rod 4. The pressure plate 51 is used for the inspection personnel to hold the pressure strip 5, so as to facilitate the inspection personnel to hold the left and right sides of the pressure strip 5. One end of the pressure block 91 is arranged in the first mounting groove 52 and has a through hole for the support rod 4 to pass through. The through hole is configured to be inserted into the pressure block 91 when the pressure block 91 is in a tilted state. When the pressure bar 5 is in an oblique position, it is restricted from sliding in the vertical direction, and when the pressure block 91 is in a horizontal position, it is allowed to slide in the vertical direction; the bolt 93 passes through the other end of the pressure block 91, and the second compression spring 92 is connected to the bottom side of the pressure plate 51; the second compression spring 92 is configured to make the pressure block 91 in an inclined position without external force, preferably, the pressure block 91 is in an inclined position with the other end of the pressure block 91 away from the pressure plate 51 without external force, and the second compression spring 92 is in a compressed state, and the lower end of the second compression spring 92 abuts against the top surface of the other side of the pressure block 91, and the upper end abuts against the bottom surface of the pressure plate 51.

[0045] When both hands hold the left and right sides of the pressure strip 5 respectively, the elastic force of the second compression spring 92 is resisted to drive the other end of the pressure block 91 close to the pressure plate 51 until the support rod 4 can move in the through hole 911 of the pressure block 91; then, both hands maintain this posture and simultaneously resist the elastic force of the first compression spring 8 to press down the pressure strip 5. In this way, the pressure strip 5 can be pressed down in the vertical direction, and the left and right sides of the pressure strip 5 can be kept balanced during the pressing process, thereby ensuring that the blowing needle 7 moves downward in the vertical direction, so that the bottle cap can be pierced more smoothly.

[0046] As a preferred embodiment, the support rod 4 is provided with a limiting portion 42 for preventing the pressure strip 5 from sliding out from the top of the support rod 4. In this embodiment, the limiting portion 42 is preferably a limiting nut, and the limiting nut is threadedly engaged with the upper thread head at the top of the support rod 4. In addition, after removing the limiting nut, the first compression spring 8, the pressure strip 5, the support seat 3 and the support rod sleeve 2 can all be taken out from the support rod 4, so as to facilitate the later detection personnel to maintain and repair the internal pressure measuring instrument or replace the support rod sleeve 2 of different heights. In other embodiments, the limiting portion 42 can also be other components installed on the support rod 4 and radially against the pressure strip 5.

[0047] As a preferred embodiment, an avoidance position 32 capable of avoiding the bottle shoulder 201 is provided between the bottle clamping position 31 and the bottom surface of the support seat 3, and the avoidance position 32 ensures that the bottle 200 can be smoothly inserted; further, an inclined surface or arc surface is used for transition between the bottle clamping position 31 and the bottom surface of the support seat 3 to form the above-mentioned avoidance position 32.

[0048] As a preferred embodiment, the bottle clamping position 31 extends backward from the middle of the front side surface of the support seat 3, and the bottle clamping position 31 includes a straight position 311 and a semicircular position 312 arranged in sequence along the extension direction. The straight position 311 plays a role in guiding the insertion, and the size of the straight position 311 is slightly larger than the size of the bottleneck 202 but smaller than the size of the bottle support ring 203, so that the bottleneck 202 of the bottle 200 can be inserted into the bottle clamping position 31, and after the insertion, the bottle support ring 203 can be placed on the top surface of the support seat 3 to play a role in supporting the bottle 200. When the bottle 200 is inserted, the bottleneck 202 of the bottle 200 needs to collide with the semicircular position 312 before the insertion process of the bottle 200 is completed. Therefore, the extended end of the bottle clamping position 31 is set to the semicircular position 312 that matches the shape of the bottleneck 202, which can avoid damage to the bottle 200 during the collision.

[0049] In addition, under the support of the support rod sleeve 2, the distance between the support seat 3 and the mounting seat 1 is greater than the height of the bottle 200. Based on the support of the support seat 3, the bottle 200 after being inserted is in a vertically suspended state; and because the support rod sleeve 2 and the support rod 4 are separated, after replacing the support rod sleeve 2 of different heights, the internal pressure measuring instrument can perform internal pressure detection on bottles 200 of different heights.

[0050] As a preferred embodiment, an arc transition is adopted between the straight position 311 and the front side surface of the support seat 3, so as to facilitate the bottle 200 to be inserted into the bottle clamping position 31 and avoid damage to the bottle 200 during insertion.

[0051] As a preferred embodiment, a limiting recess 33 is provided on the top surface of the support seat 3, and the limiting recess 33 is arranged around the bottle clamping position 31, and the limiting recess 33 is adapted to the bottle support ring 203; when the bottle 200 is clamped in, the bottle support ring 203 is placed on the bottom surface of the limiting recess 3333 to support the bottle 200, and at the same time, the outer side of the support ring 203 contacts the inner side surface of the limiting recess 3333 to limit the bottle 200, so that the bottle cap can be just below the blowing needle 7.

[0052] As a preferred embodiment, the blow needle 7 includes a mounting portion 71, a positioning portion 72 and a needle 73 arranged in sequence along the vertical direction; a second mounting groove 53 matching the mounting portion 71 is provided in the middle of the bottom surface of the pressure strip 5, and the mounting portion 71 is installed in the second mounting groove 53. After installation, the positioning portion 72 abuts against the middle of the bottom surface of the pressure strip 5 to ensure that the needle 73 is arranged in the vertical direction, and the front angle 70 is set at the bottom end of the needle 73. Further, the blow needle 7 also includes a blow needle inner hole 74 that penetrates the mounting portion 71, the positioning portion 72 and the needle 73 in the vertical direction. In addition, a sealing hose 75 is also sleeved on the needle 73. When the needle 73 pierces the bottle cap, the sealing hose 75 contacts the bottle cap to seal and prevent the gas in the bottle from overflowing from between the needle 73 and the bottle cap, thereby improving the accuracy of the internal pressure measurement.

[0053] In this embodiment, a third mounting groove 54 adapted to the connector of the pressure gauge 6 is provided in the middle of the rear side of the pressure strip 5. The connector of the pressure gauge 6 is installed in the third mounting groove 54 with the dial of the pressure gauge 6 facing upward, so as to facilitate observation of the value of the pressure gauge 6.

[0054] In this embodiment, one end of the blow needle 7 is airtightly connected to the joint of the pressure gauge 6 through the first airtight structure in the pressure strip 5, and the first airtight structure includes a first air hole 55 and a second air hole 56. One end of the first air hole 55 extends downward to the top surface of the second mounting groove 53 and is connected to the inner hole 74 of the blow needle, and the other end of the first air hole 55 extends upward and is connected to an end of the second air hole 56 extending forward, and the other end of the second air hole 56 extends backward to the front side surface of the third mounting groove 54 and is connected to the joint of the pressure gauge 6.

[0055] As a preferred embodiment, the measuring component also includes an exhaust valve 10, which is installed on the pressure strip 5. The exhaust valve 10 is air-tightly connected to one end of the blow needle 7. In the present embodiment, the exhaust valve 10 is installed in the middle of the pressure strip 5, and the joint of the exhaust valve 10 is air-tightly connected to one end of the blow needle 7 through a second air-tight structure in the pressure strip 5; when the bottle 200 is a gas-containing bottle, after obtaining the internal pressure value of the bottle 200, the exhaust valve 10 needs to be opened in time to release the gas in the bottle.

[0056] Furthermore, a fourth mounting groove 57 adapted to the joint of the exhaust valve 10 is provided in the middle of the front side of the pressure strip 5. The joint of the exhaust valve 10 is installed in the fourth mounting groove 57, and the valve 101 of the exhaust valve 10 is preferably facing upward to facilitate the inspection personnel to open the exhaust valve 10 in time.

[0057] Furthermore, the second airtight structure in the pressure strip 5 includes the first air hole 55 and the third air hole 58. The other end of the first air hole 55 extending upward is connected with the end of the third air hole 58 extending backward. The other end of the third air hole 58 extends forward and is connected with the joint of the exhaust valve 10, so that the exhaust valve 10 can exhaust.

[0058] When the internal pressure measuring instrument is used, the bottle 200 is first inserted into the bottle clamping position 31. After the bottle 200 is inserted into the bottle clamping position 31, the bottle 200 is in a vertically suspended state, and the bottle cap is located below the blow needle 7; then, both hands respectively hold the left and right sides of the pressure strip 5, and press the pressure strip 5 down against the elastic force of the first compression spring 8, so that the measuring component moves toward the support seat 3 until the blow needle 7 pierces the bottle cap. At this time, the internal pressure value of the bottle 200 can be obtained through the pressure gauge 6; finally, release both hands, and the pressure strip 5 is reset under the elastic force of the first compression spring 8, so that the measuring component moves away from the support seat 3, and the blow needle 7 is removed from the bottle cap, completing the reset of the measuring component.

[0059] The above description is only a preferred embodiment of the present invention. Any technical solution that achieves the purpose of the present invention by substantially the same means shall fall within the protection scope of the present invention.

Claims

1. An internal pressure measuring instrument, characterized in that: Includes support fixtures and measurement components; The support tooling comprises a mounting seat, a support rod, a support rod sleeve and a support seat, wherein the support rod is vertically mounted on the mounting seat, the support rod sleeve is sleeved on the outer side of the support rod, the support seat is horizontally placed on the top surface of the support rod sleeve, a part of the support rod protrudes from the top surface of the support seat, and the support seat is provided with a bottle clamp for fixing the bottle; The measuring assembly includes a pressure strip, a pressure gauge and a blow needle. The pressure strip can be slidably mounted on the top of the support rod in a vertical direction. The blow needle is vertically installed on the bottom surface of the pressure strip. One end of the blow needle is air-tightly connected to the pressure gauge, and the other end of the blow needle is positioned toward the bottle and has a sharp angle.

2. The internal pressure measuring instrument according to claim 1, characterized in that: The measuring component also includes a balancing holding mechanism and a resetting mechanism. The balancing holding mechanism is configured to fix the pressure strip to the support rod and to keep the pressure strip sliding horizontally along the support rod during operation. The resetting mechanism and the mounting seat, the support rod, and the pressure strip are configured so that the pressure strip has a resetting tendency.

3. The internal pressure measuring instrument according to claim 2, characterized in that: There are two support rods, which are vertically installed on the left and right sides of the mounting seat respectively. The outer sides of the support rods are each covered with the support rod sleeves. The support seat is placed on the top surfaces of the two support rod sleeves to keep them horizontal. The left and right sides of the pressure strip can be slidably covered on the tops of the two support rods along the vertical direction respectively.

4. The internal pressure measuring instrument according to claim 3, characterized in that: The reset mechanism includes two first compression springs, which are respectively mounted on the two support rods, the lower ends of the two first compression springs respectively abut against the top surface of the support seat, and the upper ends of the two first compression springs respectively abut against the bottom surface of the pressure strip.

5. The internal pressure measuring instrument according to claim 3, characterized in that: The balanced holding mechanism includes two groups of balanced holding components, which are respectively arranged on the left and right sides of the pressure strip, and the balanced holding components include a pressure block, a second compression spring and a bolt. The left and right sides of the pressure strip are both provided with a pressure plate extending outward and a first mounting groove that exposes the support rod; one end of the pressure block is arranged in the first mounting groove and has a through hole for the support rod to pass through, and the through hole is configured to limit the pressure strip from sliding in the vertical direction when the pressure block is in an inclined position and to allow the pressure strip to slide in the vertical direction when the pressure block is in a horizontal position; the bolt passes through the other end of the pressure block, and the second compression spring is connected to the bottom side of the pressure plate, and the second compression spring is configured to make the pressure block in an inclined position without external force.

6. The internal pressure measuring instrument according to any one of claims 1 to 5, characterized in that: The support rod is provided with a limiting portion for preventing the pressure strip from sliding out from the top end of the support rod.

7. The internal pressure measuring instrument according to claim 1, characterized in that: The measuring assembly further comprises an exhaust valve, which is mounted on the pressure strip and is airtightly connected to one end of the blow needle.

8. The internal pressure measuring instrument according to claim 1, characterized in that: An escape position capable of escaping the bottle shoulder is arranged between the bottle clamping position and the bottom surface of the support seat.

9. The internal pressure measuring instrument according to claim 1, characterized in that: The bottle clamping position extends backward from the middle of the front side surface of the support seat, and the bottle clamping position includes a straight position and a semicircular position arranged in sequence along the extending direction, and an arc transition is adopted between the straight position and the front side surface of the support seat.

10. The internal pressure measuring instrument according to claim 1, characterized in that: The top surface of the support seat is provided with a limiting recess, the limiting recess is arranged around the bottle clamping position, and the limiting recess is adapted to the bottle support ring.

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