Membrane type gas meter valve seat prepressing tool

Abstract

The utility model discloses a prepressing tool for a diaphragm gas meter valve seat. The prepressing tool is characterized by further comprising a pressing plate and a plurality of balancing weights, wherein the pressing plate is installed on a supporting frame in a sliding mode and connected with a driver, and the balancing weights are detachably and movably installed on the pressing plate and further matched with the gas meter valve seat. According to the utility model, the pressing plate is arranged to drive the balancing weight to move downwards, the vertical movement of the pressing plate ensures that the balancing weight can be stably placed on the gas meter valve seat, and the contact surfaces of the balancing weight and the gas meter valve seat are on the same horizontal line, so that the pre-pressure when the balancing weight is in contact with the gas meter can be uniformly distributed; through the arrangement of the balancing weights, after the gas meter valve seats are bonded through glue, uniform pressure can be borne, the valve seats can be tightly matched with the gas meter, the situation that due to uneven stress, local edge warping occurs at the matching positions of the valve seats and the gas meter, and the sealing performance of the gas meter is affected is avoided, meanwhile, the multiple gas meter valve seats can be pre-pressed at a time, and the sealing performance of the gas meter is improved. And the working efficiency of prepressing is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas meter valve seat assembly, in particular to a diaphragm gas meter valve seat pre-pressing tool. Background Art

[0002] Gas meters have high requirements on sealing performance and the assembly process is relatively complicated. Before assembling the gas meter, the valve seat of the gas meter needs to be pre-pressed. The existing pre-pressing method is to first apply glue on the sealing surface of the gas meter movement and the valve seat, and then the operator manually presses to fix the valve seat and the gas meter under the action of the glue. In this way, a worker can press two gas meters at most at the same time. In the pressing process, due to the uneven strength of the operator's hands and the sore hands caused by long-term pressing, the pressing tilt occurs, etc., which makes the valve seat and the gas meter uneven and partially warped, thereby affecting the sealing performance of the gas meter movement, and further affecting the metering accuracy of the gas meter. In addition, the operator cannot do other work during the pressing process, resulting in low work efficiency. For this reason, a diaphragm gas meter valve seat pre-pressing tool is proposed. Utility Model Content

[0003] The main purpose of the present invention is to provide a method for effectively solving the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a diaphragm gas meter valve seat pre-pressing tooling, including a support frame, a driver arranged on the support frame, and a number of fixed blocks arranged on the support frame for fixing the gas meter, characterized in that it also includes a pressure plate slidably mounted on the support frame and connected to the driver, and a number of detachable and movable counterweights mounted on the pressure plate and also adapted to the gas meter valve seat.

[0005] Preferably, the support frame includes a bottom plate, a top plate, and a plurality of guide rods connecting the bottom plate and the top plate.

[0006] Preferably, the fixing block is provided with a limit block for limiting the installation position of the gas meter.

[0007] Preferably, the driver can be any one of a pneumatic cylinder, a hydraulic cylinder, an electric push cylinder, a manual rack and pinion drive mechanism, an electric rack and pinion drive mechanism, or a servo drive mechanism.

[0008] Preferably, the counterweight block includes a stop block and a connecting rod connecting the stop block and the counterweight block.

[0009] The utility model has the following beneficial effects: through the setting of the pressure plate, the counterweight block is driven to move downward, and the vertical movement of the pressure plate ensures that the counterweight block can be placed stably on the gas meter valve seat, and the contact surface of the counterweight block and the gas meter valve seat is on the same horizontal line, so that the pre-pressure when the counterweight block contacts the gas meter can be evenly distributed.

[0010] By setting up several counterweights, the valve seat of the gas meter can be subjected to uniform pressure after being glued, so that the valve seat and the gas meter can fit tightly, avoiding uneven force, which causes local warping at the fitting point of the valve seat and the gas meter, affecting the sealing performance of the gas meter. At the same time, multiple gas meter valve seats can be pre-pressed at one time, thereby improving the pre-pressing work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the support frame structure of the utility model;

[0013] Figure 3 This is a schematic diagram of the driver structure of the utility model;

[0014] Figure 4 It is a structural schematic diagram of the counterweight block of the utility model.

[0015] Legend: 1. Support frame; 11. Bottom plate; 12. Top plate; 13. Guide rod; 2. Driver; 3. Fixed block; 31. Limit block; 4. Pressure plate; 5. Counterweight; 51. Stop block; 52. Connecting rod. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0017] like Figure 1-4 As shown, a diaphragm gas meter valve seat pre-pressing tooling includes a support frame 1, a driver 2 arranged on the support frame 1, and several fixed blocks 3 arranged on the support frame 1 for fixing the gas meter, characterized in that: it also includes a pressure plate 4 slidably mounted on the support frame 1 and connected to the driver 2, and several detachable and movable counterweights 5 mounted on the pressure plate 4 and also adapted to the gas meter valve seat; the support frame 1 includes a bottom plate 11 and a top plate 12 and several guide rods 13 connecting the bottom plate 11 and the top plate 12; the fixed block 3 is provided with a limit block 31 for limiting the installation position of the gas meter; the driver 2 can be any one of a cylinder, a hydraulic cylinder, an electric push cylinder, a manual rack and pinion drive mechanism, an electric rack and pinion drive mechanism, or a servo drive mechanism.

[0018] When the tooling is working, first place the gas meter on the fixed block 3 on the support frame 1. The groove of the gas meter just matches the fixed block 3. The installation position of the gas meter is limited by the limit block 31. Then start the driver 2 to drive the pressure plate 4 to move downward until several counterweights 5 installed on the pressure plate 4 contact the valve seat of the gas meter. The counterweights 5 can fall freely on the valve seat of the gas meter to stop the driver 2. The counterweights 5 are pressed on the valve seat of the gas meter by their own weight.

[0019] The pressure plate 4 is set to drive the counterweight 5 to move downward. The vertical movement of the pressure plate 4 ensures that the counterweight 5 can be stably placed on the gas meter valve seat, and the contact surface of the counterweight 5 and the gas meter valve seat is on the same horizontal line, so that the pre-pressure when the counterweight 5 contacts the gas meter can be evenly distributed.

[0020] By setting up a plurality of counterweight blocks 5, the valve seat of the gas meter can be subjected to uniform pressure after being glued, so that the valve seat and the gas meter can fit tightly together, avoiding uneven force, which causes local warping at the fitting point between the valve seat and the gas meter and affects the sealing performance of the gas meter. At the same time, multiple gas meter valve seats can be pre-pressed at one time, thereby improving the working efficiency of pre-pressing.

[0021] In one embodiment, when the driver 2 is a pneumatic cylinder or a hydraulic cylinder, the gas or hydraulic oil entering the driver 2 pushes the piston rod to move back and forth, and the piston rod drives the pressure plate 4 to move downward, so that the counterweight block 5 can be placed stably on the gas meter valve seat to achieve a pre-compression effect. If the driver 2 is a servo drive mechanism, the pneumatic cylinder or hydraulic cylinder can be replaced by a motor.

[0022] In one embodiment, the counterweight 5 includes a stopper 51 and a connecting rod 52 connecting the stopper 51 and the counterweight 5 .

[0023] When the driver 2 drives the pressure plate 4 to move downward until the pressure plate 4 is in the middle position of the connecting rod 52, the driver 2 can be stopped, and the configuration block 5 falls on the gas meter valve seat. The configuration block 5 is not subjected to the pressure of the pressure plate 4, and is pressed on the gas meter valve seat by the gravity of the counterweight block 5 itself. When the pre-compression is completed, the pressure plate 4 moves upward with the stopper 51 on the counterweight block 5 through the driver 2.

[0024] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A diaphragm gas meter valve seat pre-pressing tool, comprising a support frame (1), a driver (2) arranged on the support frame (1), and a plurality of fixing blocks (3) arranged on the support frame (1) for fixing the gas meter, characterized in that: It also includes a pressure plate (4) slidably mounted on the support frame (1) and connected to the driver (2), and a plurality of detachable counterweights (5) mounted on the pressure plate (4) and adapted to the valve seat of the gas meter.

2. A diaphragm gas meter valve seat pre-pressing tool according to claim 1, characterized in that: The support frame (1) comprises a bottom plate (11), a top plate (12), and a plurality of guide rods (13) connecting the bottom plate (11) and the top plate (12).

3. The diaphragm gas meter valve seat pre-pressing tool according to claim 1, characterized in that: The fixing block (3) is provided with a limiting block (31) for limiting the installation position of the gas meter.

4. The diaphragm gas meter valve seat pre-pressing tool according to claim 1, characterized in that: The driver (2) can be any one of an air cylinder, a hydraulic cylinder, an electric push cylinder, a manual rack and pinion drive mechanism, an electric rack and pinion drive mechanism, or a servo drive mechanism.

5. The diaphragm gas meter valve seat pre-pressing tool according to claim 1, characterized in that: The counterweight (5) comprises a stopper (51) and a connecting rod (52) connecting the stopper (51) and the counterweight (5).

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